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Sample records for coal-mine fire kentucky

  1. The Tiptop coal-mine fire, Kentucky: Preliminary investigation of the measurement of mercury and other hazardous gases from coal-fire gas vents

    Science.gov (United States)

    Hower, James C.; Henke, Kevin R.; O'Keefe, Jennifer M.K.; Engle, Mark A.; Blake, Donald R.; Stracher, Glenn B.

    2009-01-01

    The Tiptop underground coal-mine fire in the Skyline coalbed of the Middle Pennsylvanian Breathitt Formation was investigated in rural northern Breathitt County, Kentucky, in May 2008 and January 2009, for the purpose of determining the concentrations of carbon dioxide (CO2), carbon monoxide (CO), and mercury (Hg) in the vent and for measuring gas-vent temperatures. At the time of our visits, concentrations of CO2 peaked at 2.0% and > 6.0% (v/v) and CO at 600 ppm and > 700 ppm during field analysis in May 2008 and January 2009, respectively. For comparison, these concentrations exceed the U.S. Occupational Safety & Health Administration (OSHA) eight-hour safe exposure limits (0.5% CO2 and 50 ppm CO), although the site is not currently mined. Mercury, as Hg0, in excess of 500 and 2100 μg/m3, in May and January, respectively, in the field, also exceeded the OSHA eight-hour exposure limit (50 μg/m3). Carbonyl sulfide, dimethyl sulfide, carbon disulfide, and a suite of organic compounds were determined at two vents for the first sampling event. All gases are diluted by air as they exit and migrate away from a gas vent, but temperature inversions and other meteorological conditions could lead to unhealthy concentrations in the nearby towns.

  2. The Tiptop coal-mine fire, Kentucky: Preliminary investigation of the measurement of mercury and other hazardous gases from coal-fire gas vents

    Energy Technology Data Exchange (ETDEWEB)

    Hower, James C.; Henke, Kevin [University of Kentucky Center for Applied Energy Research, Lexington, KY 40511 (United States); O' Keefe, Jennifer M.K. [Morehead State University, Morehead, KY 40351 (United States); Engle, Mark A. [U.S. Geological Survey, Reston, VA 20192 (United States); Blake, Donald R. [Department of Chemistry, University of California - Irvine, Irvine, CA 92697 (United States); Stracher, Glenn B. [East Georgia College, Swainsboro, GA 30401 (United States)

    2009-10-01

    The Tiptop underground coal-mine fire in the Skyline coalbed of the Middle Pennsylvanian Breathitt Formation was investigated in rural northern Breathitt County, Kentucky, in May 2008 and January 2009, for the purpose of determining the concentrations of carbon dioxide (CO{sub 2}), carbon monoxide (CO), and mercury (Hg) in the vent and for measuring gas-vent temperatures. At the time of our visits, concentrations of CO{sub 2} peaked at 2.0% and > 6.0% (v/v) and CO at 600 ppm and > 700 ppm during field analysis in May 2008 and January 2009, respectively. For comparison, these concentrations exceed the U.S. Occupational Safety and Health Administration (OSHA) eight-hour safe exposure limits (0.5% CO{sub 2} and 50 ppm CO), although the site is not currently mined. Mercury, as Hg{sup 0}, in excess of 500 and 2100 {mu}g/m{sup 3}, in May and January, respectively, in the field, also exceeded the OSHA eight-hour exposure limit (50 {mu}g/m{sup 3}). Carbonyl sulfide, dimethyl sulfide, carbon disulfide, and a suite of organic compounds were determined at two vents for the first sampling event. All gases are diluted by air as they exit and migrate away from a gas vent, but temperature inversions and other meteorological conditions could lead to unhealthy concentrations in the nearby towns. Variation in gas temperatures, nearly 300 C during the January visit to the fire versus < 50 C in May, demonstrates the large temporal variability in fire intensity at the Tiptop mine. These preliminary results suggest that emissions from coal fires may be important, but additional data are required that address the reasons for significant variations in the composition, flow, and temperature of vent gases. (author)

  3. 77 FR 58170 - Proposed Renewal of Existing Information Collection; Fire Protection (Underground Coal Mines)

    Science.gov (United States)

    2012-09-19

    ... Renewal of Existing Information Collection; Fire Protection (Underground Coal Mines) AGENCY: Mine Safety... INFORMATION: I. Background Fire protection standards for underground coal mines are based on section 311(a) of the Federal Mine Safety and Health Act of 1977 (Mine Act). 30 CFR 75.1100 requires that each coal mine...

  4. Development of a fire detector for underground coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Hemingway, M.A.; Walsh, P.T.; Hunneyball, S.R.; Williams, M.; Jobling, S.; Pell, B.; West, N.G. [Health and Safety Laboratory, Buxton (United Kingdom)

    2005-07-01

    Current fire detectors in use in UK coal mines, based on semiconductor sensors which detect gaseous products of combustion, are under-utilised, are not user-friendly, have performance limitations due to interferences and are obsolete. A joint research project was therefore instigated to develop an improved fire detector. This paper describes tests performed in an experimental mine roadway on various types of sensor. The sensors were exposed to smouldering conveyor belt, coal, wood, oil and grease, and diesel exhaust fume. A potential advanced detector is based on the combination of blue and infrared optical smoke sensors which distinguish fires and diesel exhaust from coal dust, nitric oxide or nitrogen dioxide sensors to distinguish smoulderi8ng fires form diesel exhaust, and carbon monoxide sensors for general body monitoring. 6 refs., 5 figs.

  5. Controlling ventilation for safe escape from coal mine fires

    Energy Technology Data Exchange (ETDEWEB)

    Wala, A M [University of Kentucky, Lexington, KY (United States). Mining Engineering Dept.

    1966-04-01

    If a fire occurs outby an underground coal mine section, the immediate safe evacuation of miners from the working section should always take precedence. Unfortunately, in many cases, the dedicated escapeway (escape routes) for the evacuation of the miners become contaminated by the byproducts of fire from the adjacent entries. The purpose of this paper is to present the ventilation-control process that would keep the escapeway free from contaminants and, thus, available for travel. A few scenarios of mine fires in longwall development panels are analysed and discussed. To perform these studies, a mine-fire simulator (MFS) was used. This (MFS) provides a dynamic representation of the fire`s progress (in real time) and gives a color-graphic visualization of the spready of oxygen, combustion products and temperature of the gases throughout the ventilation system. Also presented and discussed are ways in which the MFS can be used as a training and teaching tool for miners and particularly, for ventilation and safety specialists. 7 refs., 10 figs.

  6. Characteristics of an open-cut coal mine fire pollution event

    Science.gov (United States)

    Reisen, Fabienne; Gillett, Rob; Choi, Jason; Fisher, Gavin; Torre, Paul

    2017-02-01

    On 9 February 2014, embers from a nearby grass/shrub fire spotted into an unused part of the Hazelwood open-cut brown coal mine located in the Latrobe Valley of Victoria, Australia and started a fire that spread rapidly and extensively throughout the mine under strong south-westerly winds and burned over a period of 45 days. The close proximity of the town to the coal mine and the low buoyancy of the smoke plume led to the accumulation of dense smoke levels in the township of Morwell (population of 14,000) particularly under south-westerly winds. A maximum daily PM2.5 concentration of 731 μg m-3 and 8-h CO concentration of 33 ppm were measured at Morwell South, the closest residential area located approximately 500 m from the mine. These concentrations were significantly higher than national air quality standards. Air quality monitoring undertaken in the Latrobe Valley showed that smoke from the Hazelwood mine fire affected a wide area, with particle air quality standards also exceeded in Traralgon (population of 25,000) located approximately 13 km from the mine. Pollutant levels were significantly elevated in February, decreased in March once the fire abated and then returned to background levels once the fire was declared safe at the end of March. While the smoke extent was of a similar order of magnitude to other major air pollution events worldwide, a closer look at emissions ratios showed that the open combustion of lignite brown coal in the Hazelwood mine was different to open combustion of biomass, including peat. It suggested that the dominant combustion process was char combustion. While particle and carbon monoxide monitoring started approximately 4 days after the fire commenced when smoke levels were very high, targeted monitoring of air toxics only began on 26 February (17 days after the fire) when smoke levels had subsided. Limited research on emission factors from open-cut coal mine fires make it difficult to assess the likely concentrations of air

  7. Impact of Heat and Mass Transfer during the Transport of Nitrogen in Coal Porous Media on Coal Mine Fires

    OpenAIRE

    Shi, Bobo; Zhou, Fubao

    2014-01-01

    The application of liquid nitrogen injection is an important technique in the field of coal mine fire prevention. However, the mechanism of heat and mass transfer of cryogenic nitrogen in the goaf porous medium has not been well accessed. Hence, the implementation of fire prevention engineering of liquid nitrogen roughly relied on an empirical view. According to the research gap in this respect, an experimental study on the heat and mass transfer of liquid nitrogen in coal porous media was pr...

  8. Detection and control of fires and heatings in shallow, abandoned coal mines

    International Nuclear Information System (INIS)

    Sullivan, P.

    1991-01-01

    Heatings and fires in shallow, abandoned coal mines create an environmentally undesirable hazard in the Witbank area in South Africa, as well as locations in Europe and North America. A research program was set up in South Africa to detect and control the occurrence and extent of subsurface heatings and fires. Prior to any remedial action being taken to control or extinguish a heating or fire, it is essential to evaluate underground conditions in order to determine the most effective control method. Normally, such workings cannot physically be entered due to poor ground conditions and the presence of heat and toxic gases. Two novel detection methods have been developed by the Chamber of Mines Research Organization (COMRO) for the purpose of identifying the nature and extent of such heatings remotely, via surface boreholes. Temperature monitoring allows for the detection of heating intensity and location. To determine areas of uncontrolled air infiltration into the workings, tracer gas technology is used. In addition, a method for controlling a fire which has been successfully used in South Africa is described

  9. Impact of heat and mass transfer during the transport of nitrogen in coal porous media on coal mine fires.

    Science.gov (United States)

    Shi, Bobo; Zhou, Fubao

    2014-01-01

    The application of liquid nitrogen injection is an important technique in the field of coal mine fire prevention. However, the mechanism of heat and mass transfer of cryogenic nitrogen in the goaf porous medium has not been well accessed. Hence, the implementation of fire prevention engineering of liquid nitrogen roughly relied on an empirical view. According to the research gap in this respect, an experimental study on the heat and mass transfer of liquid nitrogen in coal porous media was proposed. Overall, the main mechanism of liquid nitrogen fire prevention technology in the coal mine is the creation of an inert and cryogenic atmosphere. Cryogenic nitrogen gas vapor cloud, heavier than the air, would cause the phenomenon of "gravity settling" in porous media firstly. The cryogen could be applicable to diverse types of fires, both in the openings and in the enclosures. Implementation of liquid nitrogen open-injection technique in Yangchangwan colliery achieved the goals of fire prevention and air-cooling. Meanwhile, this study can also provide an essential reference for the research on heat and mass transfer in porous media in the field of thermal physics and engineering.

  10. Impact of Heat and Mass Transfer during the Transport of Nitrogen in Coal Porous Media on Coal Mine Fires

    Directory of Open Access Journals (Sweden)

    Bobo Shi

    2014-01-01

    Full Text Available The application of liquid nitrogen injection is an important technique in the field of coal mine fire prevention. However, the mechanism of heat and mass transfer of cryogenic nitrogen in the goaf porous medium has not been well accessed. Hence, the implementation of fire prevention engineering of liquid nitrogen roughly relied on an empirical view. According to the research gap in this respect, an experimental study on the heat and mass transfer of liquid nitrogen in coal porous media was proposed. Overall, the main mechanism of liquid nitrogen fire prevention technology in the coal mine is the creation of an inert and cryogenic atmosphere. Cryogenic nitrogen gas vapor cloud, heavier than the air, would cause the phenomenon of “gravity settling” in porous media firstly. The cryogen could be applicable to diverse types of fires, both in the openings and in the enclosures. Implementation of liquid nitrogen open-injection technique in Yangchangwan colliery achieved the goals of fire prevention and air-cooling. Meanwhile, this study can also provide an essential reference for the research on heat and mass transfer in porous media in the field of thermal physics and engineering.

  11. Coal mine subsidence

    International Nuclear Information System (INIS)

    Rahall, N.J.

    1991-05-01

    This paper examines the efficacy of the Department of the Interior's Office of Surface Mining Reclamation and Enforcement's (OSMRE) efforts to implement the federally assisted coal mine subsidence insurance program. Coal mine subsidence, a gradual settling of the earth's surface above an underground mine, can damage nearby land and property. To help protect property owners from subsidence-related damage, the Congress passed legislation in 1984 authorizing OSMRE to make grants of up to $3 million to each state to help the states establish self-sustaining, state-administered insurance programs. Of the 21 eligible states, six Colorado, Indiana, Kentucky, Ohio, West Virginia, and Wyoming applied for grants. This paper reviews the efforts of these six states to develop self-sustaining insurance programs and assessed OSMRE's oversight of those efforts

  12. Identifying sources of respirable quartz and silica dust in underground coal mines in southern West Virginia, western Virginia, and eastern Kentucky

    Energy Technology Data Exchange (ETDEWEB)

    Schatzel, Steven J. [National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, 626 Cochrans Mill Road, PO Box 18070, Pittsburgh, PA 15236 (United States)

    2009-04-01

    Prior research has suggested that the source of respirable silica dust in underground coal mines is typically the immediate top or bottom lithology adjacent to the mined seam, not mineral matter bound within the mined coal bed. Geochemical analyses were applied in an effort to identify the specific source rock of respirable quartz dust in coal mines. The analyses also demonstrate the compositional changes that take place in the generation of the respirable dust fraction from parent rock material. All six mine sites were mining coal with relatively low mineral matter content, although two mines were operating in the Fire Clay coal bed which contains a persistent tonstein. Interpretations of Ca, Mg, Mn, Na, and K concentrations strongly suggest that the top strata above the mined seam is the primary source of mineral dust produced during mining. One site indicates a mixed or bottom source, possibly due to site specific conditions. Respirable dust compositional analyses suggest a direct relationship between the quantity of mineral Si and the quantity of quartz Si. A similar relationship was not found in either the top or bottom rocks adjacent to the mined seam. An apparent loss of elemental Al was noted in the respirable dust fraction when compared to potential parent rock sources. Elemental Al is present in top and bottom rock strata within illite, kaolinite, feldspar, and chlorite. A possible explanation for loss of Al in the respirable dust samples is the removal of clays and possibly chlorite minerals. It is expected that removal of this portion of the Al bearing mineral matter occurs during rock abrasion and dust transport prior to dust capture on the samplers. (author)

  13. Fire safety requirements for electric cables and lines in deep coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Herms, C D

    1982-01-07

    In the case of a mine fire, an additional hazard from combustible cable material is likely to arise only in those few areas of the mine where special circumstances might help the fire to spread along the cables. It is more important to preserve the functional integrity of cables in the outbye roads which are affected by fire gases then at the actual seat of the fire. Mine cables with better fire-resistant properties should be made from materials which do not propagate fires, do not release burning drops, develop the lowest possible fume density and/or will permanently resist gas temperatures of 200 to 300/sup 0/C. Fire test specifications should be defined for such special cables, based on corresponding draft VDE directives. In proposing these measures the proviso is made then improvement in safety can be clearly demonstrated.

  14. Detection and delineation of coal mine fire in Jharia coal field (JCF ...

    Indian Academy of Sciences (India)

    71

    Africa, Indonesia, Poland (Zhang et al. 2005; Kuenzer et al. .... is about 8 Km in west direction from Dhanbad Rrailway station. The location of the ...... International conference on Spontaneous coal seam fires: Mitigating a global. 543 disaster at ...

  15. Detection of coal mine fires in the Jharia coal field using NOAA/AVHRR data

    Energy Technology Data Exchange (ETDEWEB)

    Agarwal, R.; Singh, D.; Chauhan, D.S.; Singh, K.P. [Harcourt Butler Technological Institute, Kanpur (India)

    2006-09-15

    Coal fires represent a major problem in most coal producing countries. The Jharia coal field (JCF) has been affected by surface and sub-surface coal fires since the beginning of mining in the region in the mid 1800s. Currently research is focused on using freely available satellite data such as NOAA/AVHRR, MODIS (moderate resolution imaging spectrometer) etc for various applications. The potential of National Oceanographic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR) images for detecting coal fires and monitoring their progress and associated environmental hazards and risks to the local communities in the JCF has been reviewed. Three models, namely the thresholding model, the contextual model and the fuel mask model have been used to determine the potential fire pixels. Due to the coarse resolution of the NOAA/AVHRR data it was essential to determine sub-pixel fires as well. Results of this study have been verified using the MODIS active fires product, MOD14 (Terra). We have used ten images of NOAA/AVHRR for the year 2004 in this study, and the results are in broad agreement with the ground truth data.

  16. Hospitalization patterns associated with Appalachian coal mining.

    Science.gov (United States)

    Hendryx, Michael; Ahern, Melissa M; Nurkiewicz, Timothy R

    2007-12-01

    The goal of this study was to test whether the volume of coal mining was related to population hospitalization risk for diseases postulated to be sensitive or insensitive to coal mining by-products. The study was a retrospective analysis of 2001 adult hospitalization data (n = 93,952) for West Virginia, Kentucky, and Pennsylvania, merged with county-level coal production figures. Hospitalization data were obtained from the Health Care Utilization Project National Inpatient Sample. Diagnoses postulated to be sensitive to coal mining by-product exposure were contrasted with diagnoses postulated to be insensitive to exposure. Data were analyzed using hierarchical nonlinear models, controlling for patient age, gender, insurance, comorbidities, hospital teaching status, county poverty, and county social capital. Controlling for covariates, the volume of coal mining was significantly related to hospitalization risk for two conditions postulated to be sensitive to exposure: hypertension and chronic obstructive pulmonary disease (COPD). The odds for a COPD hospitalization increased 1% for each 1462 tons of coal, and the odds for a hypertension hospitalization increased 1% for each 1873 tons of coal. Other conditions were not related to mining volume. Exposure to particulates or other pollutants generated by coal mining activities may be linked to increased risk of COPD and hypertension hospitalizations. Limitations in the data likely result in an underestimate of associations.

  17. Coal Mine Permit Boundaries

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — ESRI ArcView shapefile depicting New Mexico coal mines permitted under the Surface Mining Control and Reclamation Act of 1977 (SMCRA), by either the NM Mining these...

  18. Hazard mitigation in coal mines

    Science.gov (United States)

    Rashmi, R. V.; Devalal, Shilpa; Jacob, Anjali; Vidhyapathi, C. M.

    2017-11-01

    Today’s world witnesses increased number of mine accidents caused due to explosion and fire. When the methane gas concentration goes high, it causes fire leading to explosion. In this paper, an IoT based system is proposed to ensure safety to the mine workers in underground collieries. The proposed system consists of DHT-11 sensor to monitor the temperature and humidity of coal mines. When the gas sensor detects high methane gas level, blower is activated so that the atmospheric air can be pumped in from outside to dilute the gas concentration. The smoke sensor is also used to detect the fire. In case of any abnormality in any of these parameters the buzzer sounds. All these parameters are uploaded to the cloud directly so that the people at the control station can be well informed of the underground mines.

  19. Geothermal, Geochemical and Geomagnetic Mapping Of the Burning Coal Seam in Fire- Zone 18 of the Coal Mining Area Wuda, Inner Mongolia, PR China.

    Science.gov (United States)

    Kessels, W.; Han, J.; Halisch, M.; Lindner, H.; Rueter, H.; Wuttke, M. W.

    2008-12-01

    Spontaneous combustion of coal has become a world wide problem caused by and affecting technical operations in coal mining areas. The localization of the burning centre is a prerequisite for any planning of fire fighting operations. In the German - Chinese coal fire project sponsored by the German Ministry of Science and Technologies (Grant No. 0330490K) the so called fire zone 18 of the coal mining area of Wuda (InnerMongolia, PR China) serves as a test area for geophysical measurements. For the geothermal and geochemical mapping 25 up to 1m deep boreholes with a diameter of approx. 30 mm are distributed over the particular fire-zone with an extension of 320 × 180 m2. To avoid the highly dynamic gas flow processes in fire induced fractures caused by weather conditions, all boreholes were situated in the undisturbed rock compartments. In these boreholes, plastic tubes of 12 mm diameter provide access to the borehole ground filled with highly permeable gravel. The boreholes are otherwise sealed to the atmosphere by clay. The geothermal observations consist of measurements of temperature profiles in the boreholes and thermal conductivity measurement on rock samples in the lab. For depths greater then 0.2 m diurnal variations in the temperature gradient were neglected. The derived heat flow with maximum values of 80 W/m2 is more then three orders of magnitude higher than the natural undisturbed heat flow. The high heat flow suggests that the dominant heat transport is gas convection through the system of porous rock and fractures. Any temperature anomaly caused by the burning coal in a depth of more than 18 m would need years to reach the surface by a heat transport restricted to conduction. The geochemical soil gas probing is performed by gas extraction from the boreholes. Measured are the concentrations of O2, CO, CO2, H2S and CH4. The O2 deficit in the soil air and the concentrations of the other combustion products compared to the concentrations in the free

  20. Coal Mines Security System

    OpenAIRE

    Ankita Guhe; Shruti Deshmukh; Bhagyashree Borekar; Apoorva Kailaswar; Milind E.Rane

    2012-01-01

    Geological circumstances of mine seem to be extremely complicated and there are many hidden troubles. Coal is wrongly lifted by the musclemen from coal stocks, coal washeries, coal transfer and loading points and also in the transport routes by malfunctioning the weighing of trucks. CIL —Coal India Ltd is under the control of mafia and a large number of irregularities can be contributed to coal mafia. An Intelligent Coal Mine Security System using data acquisition method utilizes sensor, auto...

  1. Scope of application of bio-technology for fire control and ameliorating environmental pollution of coal mines

    International Nuclear Information System (INIS)

    Banerjee, S.C.

    1995-01-01

    A few technology knowledge gaps in the control of mine fires and environmental pollution control and abatement programmes have been identified and examined the scope of application of bio-technological approach in resolving them. (author). 16 refs., 2 tabs

  2. Optimize awareness of hazards in underground coal mines caused by electrical ignitions and fires through appropriate training guidelines.

    CSIR Research Space (South Africa)

    Page, TPT

    1998-03-01

    Full Text Available technical requirements and suggestions for appropriate training methodologies for each category of staff that could influence the likelihood of electrical ignitions and fires occurring, are contained....

  3. Coal Mine Methane in Russia

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2009-07-01

    This paper discusses coal mine methane emissions (CMM) in the Russian Federation and the potential for their productive utilisation. It highlights specific opportunities for cost-effective reductions of CMM from oil and natural gas facilities, coal mines and landfills, with the aim of improving knowledge about effective policy approaches.

  4. Coal mine site reclamation

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2013-02-15

    Coal mine sites can have significant effects on local environments. In addition to the physical disruption of land forms and ecosystems, mining can also leave behind a legacy of secondary detrimental effects due to leaching of acid and trace elements from discarded materials. This report looks at the remediation of both deep mine and opencast mine sites, covering reclamation methods, back-filling issues, drainage and restoration. Examples of national variations in the applicable legislation and in the definition of rehabilitation are compared. Ultimately, mine site rehabilitation should return sites to conditions where land forms, soils, hydrology, and flora and fauna are self-sustaining and compatible with surrounding land uses. Case studies are given to show what can be achieved and how some landscapes can actually be improved as a result of mining activity.

  5. Methane emissions from coal mining

    International Nuclear Information System (INIS)

    Boyer, C.M.; Kelafant, J.R.; Kuuskraa, V.A.; Manger, K.C.; Kruger, D.

    1990-09-01

    The report estimates global methane emissions from coal mining on a country specific basis, evaluates the technologies available to degasify coal seams and assesses the economics of recovering methane liberated during mining. 33 to 64 million tonnes were liberated in 1987 from coal mining, 75 per cent of which came from China, the USSR, Poland and the USA. Methane emissions from coal mining are likely to increase. Emission levels vary between surface and underground mines. The methane currently removed from underground mines for safety reasons could be used in a number of ways, which may be economically attractive. 55 refs., 19 figs., 24 tabs

  6. Methane emissions from coal mining

    International Nuclear Information System (INIS)

    Williams, A.; Mitchell, C.

    1993-01-01

    This paper outlines some of the problems associated with the prediction of levels of methane emission from underground and surface coal mines. Current knowledge of coal mining emissions sources is outlined. On the basis of this information the methodology proposed by the IPCC/OECD Programme on National Inventories is critically examined and alternatives considered. Finally, the technical options for emissions control are examined together with their feasibility. 8 refs., 6 figs., 2 tabs

  7. Coal mining in Australia

    Energy Technology Data Exchange (ETDEWEB)

    Mills, L J

    1981-12-01

    In 1959 black coal production in Australia totalled some 21.9 million tonnes per annum, 70% of this being produced from underground mines in the coalfields of New South Wales. By 1980 output levels had increased by nearly 350% to 75.4 million tonnes per annum (54% of which was exported) compared with 5% some 20 years earlier. Because it is blessed with large reserves of coal and other forms of energy, it is inevitable that the Australian coal mining industry will be required to play a major role in the development of the international coal market through to the end of the present century. Experts now predict a need for the black coal output in Australia to be developed from its present level to a minimum of 293 million tonnes per annum by the year 2000. This paper examines the present circumstances in the Australian coal industry and attempts to outline the development which has to be undertaken in order to meet the needs of an energy hungry world.

  8. Coal mine subsidence

    International Nuclear Information System (INIS)

    Darmody, R.G.; Hetzler, R.T.; Simmons, F.W.

    1992-01-01

    Longwall coal mining in southern Illinois occurs beneath some of the best agricultural land in the U.S. This region is characterized by highly productive, nearly level, and somewhat poorly drained soils. Subsidence from longwall mining causes changes in surface topography which alters surface and subsurface hydrology. These changes can adversely affect agricultural land by creating wet or ponded areas that can be deleterious to crop production. While most subsided areas show little impact from subsidence, some areas experience total crop failure. Coal companies are required by law to mitigate subsidence damage to cropland. The objective of this paper is to test the effectiveness of mitigation in restoring grain yields to their pre-mined levels. The research was conducted on sites selected to represent conventional mitigation techniques on the predominate soils in the area. Corn (Zea mays L.) and soybean [Glycine max.(L.) Merr] yields in 1988, 1989, 1990, and 1991 from mitigated areas were compared to yields from nearby undisturbed areas

  9. The Economic Impact of Coal Mining in New Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Peach, James; Starbuck, C.

    2009-06-01

    The economic impact of coal mining in New Mexico is examined in this report. The analysis is based on economic multipliers derived from an input-output model of the New Mexico economy. The direct, indirect, and induced impacts of coal mining in New Mexico are presented in terms of output, value added, employment, and labor income for calendar year 2007. Tax, rental, and royalty income to the State of New Mexico are also presented. Historical coal production, reserves, and price data are also presented and discussed. The impacts of coal-fired electricity generation will be examined in a separate report.

  10. Safety Research and Experimental Coal Mines

    Data.gov (United States)

    Federal Laboratory Consortium — Safety Research and Experimental Coal MinesLocation: Pittsburgh SiteThe Safety Research Coal Mine and Experimental Mine complex is a multi-purpose underground mine...

  11. Coal Mining-Related Respiratory Diseases

    Science.gov (United States)

    ... Topics Publications and Products Programs Contact NIOSH NIOSH COAL WORKERS' HEALTH SURVEILLANCE PROGRAM Recommend on Facebook Tweet Share Compartir Coal Mining-Related Respiratory Diseases Coal mining-related respiratory ...

  12. Tube bundle system: for monitoring of coal mine atmosphere.

    Science.gov (United States)

    Zipf, R Karl; Marchewka, W; Mohamed, K; Addis, J; Karnack, F

    2013-05-01

    A tube bundle system (TBS) is a mechanical system for continuously drawing gas samples through tubes from multiple monitoring points located in an underground coal mine. The gas samples are drawn via vacuum pump to the surface and are typically analyzed for oxygen, methane, carbon dioxide and carbon monoxide. Results of the gas analyses are displayed and recorded for further analysis. Trends in the composition of the mine atmosphere, such as increasing methane or carbon monoxide concentration, can be detected early, permitting rapid intervention that prevents problems, such as a potentially explosive atmosphere behind seals, fire or spontaneous combustion. TBS is a well-developed technology and has been used in coal mines around the world for more than 50 years. Most longwall coal mines in Australia deploy a TBS, usually with 30 to 40 monitoring points as part of their atmospheric monitoring. The primary uses of a TBS are detecting spontaneous combustion and maintaining sealed areas inert. The TBS might also provide mine atmosphere gas composition data after a catastrophe occurs in an underground mine, if the sampling tubes are not damaged. TBSs are not an alternative to statutory gas and ventilation airflow monitoring by electronic sensors or people; rather, they are an option to consider in an overall mine atmosphere monitoring strategy. This paper describes the hardware, software and operation of a TBS and presents one example of typical data from a longwall coal mine.

  13. Drainage from coal mines: Chemistry and environmental problems

    International Nuclear Information System (INIS)

    Wildeman, T.

    1991-01-01

    Much of the research on coal-mine drainage chemistry was conducted a decade ago, and now increased environmental awareness has brought about renewed interest in the findings. Consideration of the trace minerals and elements in coal points to the possible generation of acidic waters upon weathering, especially when pyrite is present. When pyrite weathers, it produces H + and Fe 3+ which catalyze the incongruent weathering of other carbonates and sulfides. In this weathering mechanism, catalysis by bacteria is important. Of the environmental problems in coal mine drainage, the mineral acidity of the water is the most serious. This is caused not only by the H + , but also by Mn 4+ , Fe 3+ , and Al 3+ that are found or generated within the drainage. Case studies in Kentucky, Pennsylvania, Illinois, and Colorado show that the abundance and form of pyrite in the deposit and in the overburden determines the level of acidity and the concentration of heavy metal pollutants in the drainage. Recent trends in environmental enforcement that emphasize integrated stream water standards and biotoxicity assays point to the possibility that the concentrations of heavy metals in coal mine drainages may cause environmental concern

  14. Methane in German hard coal mining

    International Nuclear Information System (INIS)

    Martens, P.N.; Den Drijver, J.

    1995-01-01

    Worldwide, hard coal mining is being carried out at ever increasing depth, and has, therefore, to cope with correspondingly increasing methane emissions are caused by coal mining. Beside carbon dioxide, chloro-fluoro-carbons (CFCs) and nitrogen oxides, methane is one of the most significant 'greenhouse' gases. It is mainly through the release of such trace gases that the greenhouse effect is brought about. Reducing methane emissions is therefore an important problem to be solved by the coal mining industry. This paper begins by highlighting some of the fundamental principles of methane in hard coal mining. The methane problem in German hard coal mining and the industry's efforts to reduce methane emissions are presented. The future development in German hard coal mining is illustrated by an example which shows how large methane volumes can be managed, while still maintaining high outputs at increasing depth. (author). 7 tabs., 10 figs., 20 refs

  15. 78 FR 11796 - Kentucky Regulatory Program

    Science.gov (United States)

    2013-02-20

    .... --$2,000 per acre and each fraction thereof for operations on previously mined areas. --$3,500 per acre... program (``the Kentucky program'') for surface coal mining and reclamation operations under the Surface... the amount of the performance bond for each surface coal mining and reclamation operation is...

  16. Coal Mine Methane in Russia [Russian Version

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-07-01

    This paper discusses coal mine methane emissions (CMM) in the Russian Federation and the potential for their productive utilisation. It highlights specific opportunities for cost-effective reductions of CMM from oil and natural gas facilities, coal mines and landfills, with the aim of improving knowledge about effective policy approaches.

  17. An Approach for Understanding and Promoting Coal Mine Safety by Exploring Coal Mine Risk Network

    Directory of Open Access Journals (Sweden)

    Yongliang Deng

    2017-01-01

    Full Text Available Capturing the interrelations among risks is essential to thoroughly understand and promote coal mining safety. From this standpoint, 105 risks and 135 interrelations among risks had been identified from 126 typical accidents, which were also the foundation of constructing coal mine risk network (CMRN. Based on the complex network theory and Pajek, six parameters (i.e., network diameter, network density, average path length, degree, betweenness, and clustering coefficient were employed to reveal the topological properties of CMRN. As indicated by the results, CMRN possesses scale-free network property because its cumulative degree distribution obeys power-law distribution. This means that CMRN is robust to random hazard and vulnerable to deliberate attack. CMRN is also a small-world network due to its relatively small average path length as well as high clustering coefficient, implying that accident propagation in CMRN is faster than regular network. Furthermore, the effect of risk control is explored. According to the result, it shows that roof collapse, fire, and gas concentration exceeding limit refer to three most valuable targets for risk control among all the risks. This study will help offer recommendations and proposals for making beforehand strategies that can restrain original risks and reduce accidents.

  18. 30 CFR 817.81 - Coal mine waste: General requirements.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Coal mine waste: General requirements. 817.81... ACTIVITIES § 817.81 Coal mine waste: General requirements. (a) General. All coal mine waste disposed of in an... within a permit area, which are approved by the regulatory authority for this purpose. Coal mine waste...

  19. 30 CFR 816.81 - Coal mine waste: General requirements.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Coal mine waste: General requirements. 816.81... ACTIVITIES § 816.81 Coal mine waste: General requirements. (a) General. All coal mine waste disposed of in an... within a permit area, which are approved by the regulatory authority for this purpose. Coal mine waste...

  20. 30 CFR 817.84 - Coal mine waste: Impounding structures.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Coal mine waste: Impounding structures. 817.84... ACTIVITIES § 817.84 Coal mine waste: Impounding structures. New and existing impounding structures constructed of coal mine waste or intended to impound coal mine waste shall meet the requirements of § 817.81...

  1. 30 CFR 49.20 - Requirements for all coal mines.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Requirements for all coal mines. 49.20 Section... TRAINING MINE RESCUE TEAMS Mine Rescue Teams for Underground Coal Mines § 49.20 Requirements for all coal mines. (a) The operator of each underground coal mine shall make available two certified mine rescue...

  2. Coal mine subsidence and structures

    International Nuclear Information System (INIS)

    Gray, R.E.

    1988-01-01

    Underground coal mining has occurred beneath 32 x 10 9 m 2 (8 million acres) of land in the United States and will eventually extend beneath 162 x 10 9 m 2 (40 million acres). Most of this mining has taken place and will take place in the eastern half of the United States. In areas of abandoned mines where total extraction was not achieved, roof collapse, crushing of coal pillars, or punching of coal pillars into softer mine floor or roof rock is now resulting in sinkhole or trough subsidence tens or even hundreds of years after mining. Difference in geology, in mining, and building construction practice between Europe and the United States preclude direct transfer of European subsidence engineering experience. Building damage cannot be related simply to tensile and compressive strains at the ground surface. Recognition of the subsidence damage role played by ground-structure interaction and by structural details is needed

  3. Steam coal mines of tomorrow

    Energy Technology Data Exchange (ETDEWEB)

    McCloskey, G

    1986-07-01

    A comprehensive review of new steam coal mines being planned or developed worldwide. It shows that at least 20 major mines with a combined annual output of 110 million tonnes per annum, could add their coal to world markets in the next 10 years. The review highlights: substantial activity in Australia with at least four major mines at advanced planning stages; a strengthening of the South American export industry with 4 major mines operating in 10 years compared with just one today; no major export mines being developed in the traditional US mining areas; and the emergence of Indonesia as a major steam coal producer/exporter. The review also shows a reduction in cost/output ratios, and also the proximity of the new mines to existing infrastructure (e.g. export terminals, rail links).

  4. Mine Water Treatment in Hongai Coal Mines

    Science.gov (United States)

    Dang, Phuong Thao; Dang, Vu Chi

    2018-03-01

    Acid mine drainage (AMD) is recognized as one of the most serious environmental problem associated with mining industry. Acid water, also known as acid mine drainage forms when iron sulfide minerals found in the rock of coal seams are exposed to oxidizing conditions in coal mining. Until 2009, mine drainage in Hongai coal mines was not treated, leading to harmful effects on humans, animals and aquatic ecosystem. This report has examined acid mine drainage problem and techniques for acid mine drainage treatment in Hongai coal mines. In addition, selection and criteria for the design of the treatment systems have been presented.

  5. Mine Water Treatment in Hongai Coal Mines

    Directory of Open Access Journals (Sweden)

    Dang Phuong Thao

    2018-01-01

    Full Text Available Acid mine drainage (AMD is recognized as one of the most serious environmental problem associated with mining industry. Acid water, also known as acid mine drainage forms when iron sulfide minerals found in the rock of coal seams are exposed to oxidizing conditions in coal mining. Until 2009, mine drainage in Hongai coal mines was not treated, leading to harmful effects on humans, animals and aquatic ecosystem. This report has examined acid mine drainage problem and techniques for acid mine drainage treatment in Hongai coal mines. In addition, selection and criteria for the design of the treatment systems have been presented.

  6. Mine Water Treatment in Hongai Coal Mines

    OpenAIRE

    Dang Phuong Thao; Dang Vu Chi

    2018-01-01

    Acid mine drainage (AMD) is recognized as one of the most serious environmental problem associated with mining industry. Acid water, also known as acid mine drainage forms when iron sulfide minerals found in the rock of coal seams are exposed to oxidizing conditions in coal mining. Until 2009, mine drainage in Hongai coal mines was not treated, leading to harmful effects on humans, animals and aquatic ecosystem. This report has examined acid mine drainage problem and techniques for acid mine ...

  7. Equipment repair in coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, S

    1982-01-01

    Most equipment in Chinese coal mines consists of machinery and equipment produced in the 1950s; the efficiency of 4-62, CTD-57 and 70B/sub 2/ ventilators is 15% lower than that of new ones; that of SSM and AYaP pumps, 10% lower than of modern ones. Equipment renovation is done in three ways: replacing obsolete equipment with new equipment of the same type; improving the performance of existing equipment by introducing efficiency and reconstruction; and replacing obsolete equipment with advanced equipment. It is indicated that the second way, for example, replacement of 4-62 ventilator blades with a maximum efficiency of 73% by 4-72 ventilator blades raises its efficiency to 90%. Replacing the 8DA-8x3 water pump, having a maximum efficiency of 63%, with the 200D 43x3 pump with a maximum efficiency of 78%, enables an electricity savings of 7000 yuan per year, which exceeds all replacement costs (600 yuan). The need to improve equipment maintenance and preventive work to increase equipment service life and to introduce new techniques and efficiency is noted.

  8. 78 FR 68783 - Refuge Alternatives for Underground Coal Mines

    Science.gov (United States)

    2013-11-15

    ... Alternatives for Underground Coal Mines AGENCY: Mine Safety and Health Administration, Labor. ACTION: Reopen... coal mines. The U.S. Court of Appeals for the District of Columbia Circuit remanded a training... for refuge alternatives in underground coal mines. On January 13, 2009, the United Mine Workers of...

  9. 78 FR 58264 - Refuge Alternatives for Underground Coal Mines

    Science.gov (United States)

    2013-09-23

    ... Refuge Alternatives for Underground Coal Mines AGENCY: Mine Safety and Health Administration, Labor... Agency's Request for Information (RFI) on Refuge Alternatives for Underground Coal Mines. This extension... Alternatives for Underground Coal Mines. The RFI comment period had been scheduled to close on October 7, 2013...

  10. 78 FR 48591 - Refuge Alternatives for Underground Coal Mines

    Science.gov (United States)

    2013-08-08

    ... Administration 30 CFR Parts 7 and 75 Refuge Alternatives for Underground Coal Mines; Proposed Rules #0;#0;Federal... Underground Coal Mines AGENCY: Mine Safety and Health Administration, Labor. ACTION: Limited reopening of the... for miners to deploy and use refuge alternatives in underground coal mines. The U.S. Court of Appeals...

  11. 78 FR 73471 - Refuge Alternatives for Underground Coal Mines

    Science.gov (United States)

    2013-12-06

    ... Refuge Alternatives for Underground Coal Mines AGENCY: Mine Safety and Health Administration, Labor... Agency's Request for Information (RFI) on Refuge Alternatives for Underground Coal Mines. This extension...), MSHA published a Request for Information on Refuge Alternatives for Underground Coal Mines. The RFI...

  12. 30 CFR 716.5 - Anthracite coal mines.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Anthracite coal mines. 716.5 Section 716.5... PROGRAM REGULATIONS SPECIAL PERFORMANCE STANDARDS § 716.5 Anthracite coal mines. (a) Permittees of anthracite surface coal mining and reclamation operations in those States where the mines are regulated by...

  13. Automated Coal-Mine Shuttle Car

    Science.gov (United States)

    Collins, E. R., Jr.

    1984-01-01

    Cable-guided car increases efficiency in underground coal mines. Unmanned vehicle contains storage batteries in side panels for driving traction motors located in wheels. Batteries recharged during inactive periods or slid out as unit and replaced by fresh battery bank. Onboard generator charges batteries as car operates.

  14. Hydroseeding on anthracite coal-mine spoils

    Science.gov (United States)

    Miroslaw M. Czapowskyj; Ross Writer

    1970-01-01

    A study was made of the performance of selected species of legumes, grasses, and trees hydroseeded on anthracite coal-mine spoils in a slurry of lime, fertilizer, and mulch. Hydroseeding failed on coal-breaker refuse, but was partially successful on strip-mine spoils.

  15. Management present situation and countermeasures of coal mines safety in production

    Institute of Scientific and Technical Information of China (English)

    ZHANG Shu-dong; YU Chang-wu

    2008-01-01

    Analyzed of the present situation of Chinese coal mines safety in production and the reasons for coal mining accident, and realized the coal mines safety in production,which should increase the legal safeguards of coal mine safety in production, and safety input, established the comprehensive coal mine safety evaluation system, comprehensively enhance quality of coal mine workers, established and improved early warning mechanism of safety production of coal mine.

  16. Injury experience in coal mining, 1990

    Energy Technology Data Exchange (ETDEWEB)

    None

    1991-01-01

    This Mine Safety and Health Administration (MSHA) informational report reviews in detail the occupational injury and illness experience of coal mining in the United States for 1990. Data reported by operators of mining establishments concerning work injuries are summarized by work location, accident classification, part of body injured, nature of injury, occupation, and anthracite or bituminous coal. Related information on employment, worktime, and operating activity also is presented. Data reported by independent contractors performing certain work at mining locations are depicted separately in this report. For ease of comparison between coal mining and the metal and nonmetal mineral mining industries, summary reference tabulations are included at the end of both the operator and the contractor sections of this report.

  17. Injury experience in coal mining, 1992

    Energy Technology Data Exchange (ETDEWEB)

    Reich, R.B.; Hugler, E.C.

    1994-05-01

    This Mine Safety and Health Administration (MSHA) informational report reviews in detail the occupational injury and illness experience of coal mining in the United States for 1992. Data reported by operators of mining establishments concerning work injuries are summarized by work location, accident classification, part of body injured, nature of injury, occupation, and anthracite or bituminous coal. Related information on employment, worktime, and operating activity also is presented. Data reported by independent contractors performing certain work at mining locations are depicted separately in this report. For ease of comparison between coal mining and the metal and nonmetal mineral mining industries, summary reference tabulations are included at the end of both the operator and the contractor sections of this report.

  18. Characteristics of coal mine ventilation air flows.

    Science.gov (United States)

    Su, Shi; Chen, Hongwei; Teakle, Philip; Xue, Sheng

    2008-01-01

    Coal mine methane (CMM) is not only a greenhouse gas but also a wasted energy resource if not utilised. Underground coal mining is by far the most important source of fugitive methane emissions, and approximately 70% of all coal mining related methane is emitted to the atmosphere through mine ventilation air. Therefore, research and development on mine methane mitigation and utilisation now focuses on methane emitted from underground coal mines, in particular ventilation air methane (VAM) capture and utilisation. To date, most work has focused on the oxidation of very low concentration methane. These processes may be classified based on their combustion kinetic mechanisms into thermal oxidation and catalytic oxidation. VAM mitigation/utilisation technologies are generally divided into two basic categories: ancillary uses and principal uses. However, it is possible that the characteristics of ventilation air flows, for example the variations in methane concentration and the presence of certain compounds, which have not been reported so far, could make some potential VAM mitigation and utilisation technologies unfeasible if they cannot cope with the characteristics of mine site ventilation air flows. Therefore, it is important to understand the characteristics of mine ventilation air flows. Moreover, dust, hydrogen sulphide, sulphur dioxide, and other possible compounds emitted through mine ventilation air into the atmosphere are also pollutants. Therefore, this paper presents mine-site experimental results on the characteristics of mine ventilation air flows, including methane concentration and its variations, dust loadings, particle size, mineral matter of the dust, and other compounds in the ventilation air flows. The paper also discusses possible correlations between ventilation air characteristics and underground mining activities.

  19. Underground coal mining technology - the future

    Energy Technology Data Exchange (ETDEWEB)

    Lama, R P [Kembla Coal and Coke Pty Limited, Wollongong, NSW (Australia)

    1989-01-01

    Discusses development of underground coal mining in Australia in the last four decades. The following aspects are reviewed: technology for underground mining (longwall mining, unidirectional cutting, bidirectional cutting, operation of more than one shearer on a working face, optimum dimensions of longwall blocks), longwall productivity (productivity increase will depend on increasing the availability factor of equipment, reducing failures due to human errors, organizational models, improving on-site decision making, improving monitoring, maintenance, planning and scheduling, concept of 'Transparent Mine'), roadway development systems (types of heading machines, standard systems for mine drivage and roof bolting and their productivity), size of coal mines, man and material transport systems (20,000-30,000 t/d from a single longwall face, mine shafts with a diameter 9-10 m), mine layout design (layout of longwall blocks, main intakes and returns situated in rock layers), mine environmental systems (ventilation systems, gas control), management, training and interpersonal relationships. Future coal mines will be developed with an integral capacity of 8-10 Mt/a from a single longwall operation with main development arteries placed in rocks. Development of gate roadways will require novel solutions with continuous cutting, loading and bolting. Information technology, with the concept of 'transparent mine', will form the backbone of decision making.

  20. Injury experience in coal mining, 1991

    Energy Technology Data Exchange (ETDEWEB)

    1991-12-31

    This Mine Safety and Health Administration (MSHA) informational report reviews in detail the occupational injury and illness experience of coal mining in the United States for 1991. Data reported by operators of mining establishments concerning work injuries are summarized by work location, accident classification, part of body injured, nature of injury, occupation, and anthracite or bituminous coal. Related information on employment, worktime, and operating activity also is presented. Data reported by independent contractors performing certain work at mining locations are depicted separately in this report. For ease of comparison between coal mining and the metal and nonmetal mineral mining industries, summary reference tabulations are included at the end of both the operator and the contractor sections of this report. Data used in compiling this report were reported by operators of coal mines and preparation plants on a mandatory basis as required under the Federal Mine Safety and Health Act of 1977, Public Law 91-173,as amended by Public Law 95-164. Since January 1, 1978, operators of mines or preparation plants or both which are subject to the Act have been required under 30 CFR, Part 50, to submit reports of injuries, occupational illnesses, and related data.

  1. Selective coal mining of intercalated lignite deposits

    Energy Technology Data Exchange (ETDEWEB)

    Zunic, R [Kolubara-Projekt, Lazarevac (Yugoslavia)

    1991-01-01

    Describes selective coal mining in the Tamnava-Istocno Polje coal surface coal mine (Yugoslavia), designed for an annual coal production of 11.4 Mt. Until 1991, this mine exploited one thick lignite seam, without spoil intercalations, using a bucket wheel excavator-conveyor-spreader system both for coal mining and removal of overburden. In the future, several spoil intercalations of up to 1.0 m and thicker will appear with a total volume of 22 million m{sup 3}. These intercalations have to be selectively excavated in order to guarantee the calorific value of coal for the Nikola Tesla power plant. Computer calculations were carried out to determine the decrease in excavator coal production due to selective mining of spoil strata. Calculations found that the annual surface mine capacity will be lower by at most 9%, depending on thickness of spoil intercalations. The useful operation time of excavators will be reduced by 98 hours per year. The planned annual coal production will nevertheless be fulfilled. 3 refs.

  2. Coal mine safety achievements in the USA and the contribution of NIOSH research

    Energy Technology Data Exchange (ETDEWEB)

    Esterhuizen, G.S.; Gurtunca, R.G. [NIOSH, Washington, DC (United States)

    2006-12-15

    Over the past century coal miner safety and health have seen tremendous improvements: the fatality and injury rates continue to decrease while productivity continues to increase. Many of the hazards that plagued miners in the past, such as coal bumps, methane and coal dust explosions, ground fall accidents and health issues have been significantly reduced. The contribution of NIOSH research includes products for prevention and survival of mine fires, methane control measures, design procedure for underground coal mines, methods for excavation surface controls, methods and procedures for blasting, laser usage in underground mines and prevention of electrocution from overhead power lines that have reduced accidents and injuries in underground coal mines. Health research has produced products such as the personal dust monitor, noise abating technologies and ergonomic solutions for equipment operators. Research priorities at NIOSH are set by considering surveillance statistics, stakeholder inputs and loss control principles. Future research in coal mining is directed towards respiratory diseases, noise-induced hearing loss, repetitive musculoskeletal injuries, traumatic injuries, falls of ground and mine disasters. The recent spate of accidents in coal mines resulted in the Miner Act of 2006, which includes a specific role for NIOSH in future mine safety research and development. The mine safety achievements in the USA reflect the commitment of industry, labour, government and research organizations to improving the safety of the mine worker.

  3. Causes of Coal Mine Accidents in the World and Turkey.

    Science.gov (United States)

    Küçük, Filiz Çağla Uyanusta; Ilgaz, Aslıhan

    2015-04-01

    Occupational accidents and occupational diseases are common in the mining sector in Turkey and throughout the world. The most common causes of accidents in coal mining are firedamp and dust explosions, landslips, mine fires, and technical failures related to transport and mechanization. An analysis of occupational accidents in the consideration of social and economic factors will let understand the real causes behind these accidents, which are said to happen inevitably due to technical deficiencies or failures. Irregular working conditions, based on profit maximization and cost minimization, are related to strategic operational preferences and public policies. Proving that accidents in mines, where occupational health and safety measures are not implemented and inspections are not done properly or at all, are caused by the fact that production is imposed to be carried out in the fastest, cheapest, and most profitable way will allow us to take steps to prevent further mine accidents.

  4. Causes of Coal Mine Accidents in the World and Turkey

    Science.gov (United States)

    Küçük, Filiz Çağla Uyanusta; Ilgaz, Aslıhan

    2015-01-01

    Occupational accidents and occupational diseases are common in the mining sector in Turkey and throughout the world. The most common causes of accidents in coal mining are firedamp and dust explosions, landslips, mine fires, and technical failures related to transport and mechanization. An analysis of occupational accidents in the consideration of social and economic factors will let understand the real causes behind these accidents, which are said to happen inevitably due to technical deficiencies or failures. Irregular working conditions, based on profit maximization and cost minimization, are related to strategic operational preferences and public policies. Proving that accidents in mines, where occupational health and safety measures are not implemented and inspections are not done properly or at all, are caused by the fact that production is imposed to be carried out in the fastest, cheapest, and most profitable way will allow us to take steps to prevent further mine accidents. PMID:29404108

  5. Coal Mine Health and Safety Regulation 2006 under the Coal Mine Health and Safety Act 2002

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-12-22

    The aim of the Act is to secure the health, safety and welfare of people in connection with coal operations (which include all places of work where coal is mined and certain other places). The Regulation contains provisions about the following matters: (a) places of work to which the Act does not apply, (b) duties relating to health, welfare and safety at coal operations, including the following: (i) the nomination of the operator of a coal operation and the provision of health and safety information for incoming operators, (ii) the contents of health and safety management systems for coal operations, (iii) major hazards and the contents of major hazard management plans for coal operations, (iv) duties relating to contractors, (v) the contents of management structures and emergency management systems for coal operations, escape and rescue plans and fire fighting plans and high risk activities, (c) notifications, including (i) notification of incidents, (ii) inquiries, (iii) notification of other matters to the Chief Inspector), (d) aspects of safety at coal operations, including the following: (i) controlled materials, plants and practices, (ii) coal dust explosion prevention and suppression, (iii) ventilation at coal operations, (iv) escape from coal operations, (v) the operation of transport at coal operations, (vi) surveys and certified plans, (vii) employment at coal operations, (e) the licensing of certain activities, (f) competence standards, (g) the Coal Competence Board, (h) check inspectors, (i) exemptions from provisions of this Regulation, (j) the following miscellaneous matters concerning coal mine health and safety: (i) the keeping of records and reporting, (ii) penalties, the review of decisions by the Administrative Decisions Tribunal, fees and charges, consultation, information and other miscellaneous matters, (k) savings and transitional provisions.

  6. A novel method for estimating methane emissions from underground coal mines: The Yanma coal mine, China

    Science.gov (United States)

    Ji, Zhong-Min; Chen, Zhi-Jian; Pan, Jie-Nan; Niu, Qing-He

    2017-12-01

    As the world's largest coal producer and consumer, China accounts for a relatively high proportion of methane emissions from coal mines. Several estimation methods had been established for the coal mine methane (CMM) emission. However, with large regional differences, various reservoir formation types of coalbed methane (CBM) and due to the complicated geological conditions in China, these methods may be deficient or unsuitable for all the mining areas (e.g. Jiaozuo mining area). By combing the CMM emission characteristics and considering the actual situation of methane emissions from underground coal mine, we found that the methane pre-drainage is a crucial reason creating inaccurate evaluating results for most estimation methods. What makes it so essential is the extensive pre-drainage quantity and its irrelevance with annual coal production. Accordingly, the methane releases were divided into two categories: methane pre-drainage and methane release during mining. On this basis, a pioneering method for estimating CMM emissions was proposed. Taking the Yanma coal mine in the Jiaozuo mining area as a study case, the evaluation method of the pre-drainage methane quantity was established after the correlation analysis between the pre-drainage rate and time. Thereafter, the mining activity influence factor (MAIF) was first introduced to reflect the methane release from the coal and rock seams around where affected by mining activity, and the buried depth was adopted as the predictor of the estimation for future methane emissions. It was verified in the six coal mines of Jiaozuo coalfield (2011) that the new estimation method has the minimum errors of 12.11%, 9.23%, 5.77%, -5.20%, -8.75% and 4.92% respectively comparing with other methods. This paper gives a further insight and proposes a more accurate evaluation method for the CMM emissions, especially for the coal seams with low permeability and strong tectonic deformation in methane outburst coal mines.

  7. Coal mining in the power industry of the Federal Republic of Germany in 1993

    International Nuclear Information System (INIS)

    1994-11-01

    After an introductory text divided into the sections energy and coal market, Coal mining and brown coal mining, extensive tables containing the most important characteristic figures of German coal mining are shown. (orig.) [de

  8. Burnout in Chinese coal mine safety supervision

    International Nuclear Information System (INIS)

    Chen, Hong; Chen, Feiyu; Zhu, Dandan; Qi, Hui; Long, Ruyin

    2015-01-01

    This study examines commonly-suffered job burnout as it relates to the practice of safety supervision in Chinese coal mine enterprises. Commonly-suffered job burnout is a form of job burnout caused by external factors. It is closely related to task characteristics rather than individual idiosyncrasies. To explore the causes of commonly-suffered job burnout, the special attributes (the integrated output attributes, conditional output attributes, and public goods attributes) of coal mine safety output and the inevitability of the invalidation of the bounded authority in safety supervision were analyzed in this study, which reveals the formation mechanism of commonly-suffered job burnout. Moreover, a confirmatory game model was constructed to analyze how the attributes of the safety output and bounded authority of safety supervision act on the safety output. The theoretical connotation of commonly-suffered job burnout was explained based on the job demands-resources theory. A comparative analysis of commonly-suffered job burnout and the job burnout that occurs in the traditional research object was also undertaken from the viewpoint of the job demands, which are determined by the characteristics of the work task and their corresponding coping resources. Policy suggestions were given based on interventions in commonly-suffered job burnout. -- Highlights: •We discuss commonly-suffered job burnout in Chinese coal enterprises. •We analyze the special attributes of coal mine safety output. •We explore two main causes of commonly-suffered job burnout. •We construct a game model to validate how the two causes act on safety output. •We put forward related policy suggestions

  9. Seventh symposium on coal mine drainage research. NCA/BCR coal conference and Expo IV

    Energy Technology Data Exchange (ETDEWEB)

    None

    1977-01-01

    The Seventh Symposium on Coal Mine Drainage Research, sponsored by the National Coal Association and Bituminous Coal Research, Inc., was held at the Kentucky Fair and Exposition Center, Louisville, Kentucky, October 18-20, 1977. Seventeen papers from the proceedings have been entered individually into EDB and ERA. Topics covered include chemical reactions of pyrite oxidation and acid formation in spoil banks, abandoned mines, etc., formation of small acid lakes from the drainage and their neutralization by natural and other neutralization measures, trace elements in acid mine drainage, ground water contamination, limnology, effects of surface mined ground reclamation and neutralization, water purification and treatment, mining and coal preparation plant waste disposal, ash and fly ash disposal (to minimize leaching from the wastes), runoff from large coal storage stockpiles during storms (prevention of environmental effects by collection and neutralization by passing through an ash pond). (LTN)

  10. Coal mining and water quality: Criciuma's case

    International Nuclear Information System (INIS)

    Fernandes, Lincoln

    1999-01-01

    The coal mining in the Santa Catarina Coal-Basin started in 1885 and since them it has been causing serious damage to the environment, specially the water resources, causing several problems like sedimentation and acidification of the rivers that supply the region, and compromising the agricultural-industry and fishery. The mining is also responsible for several professional diseases. The region was considered, in 1980, the '14th Critical Area' to the Pollution Control and Environmental Quality Conservation. Only in the beginning of the 80's, after the publication of the 917 Interministerial Resolution (July, 1982), the first official actions were taken, in order to minimize the environmental impact due to the coal mining industry. With that scenario, the region was chosen as one of the study areas of the 'National Center of Control of Mining Pollution', derived from an agreement between the Departamento Nacional de Producao Mineral - DNPM and the Japan International Cooperation Agency (JICA). The present study is part of the set of studies that have been realized in the region, with the aim of evaluating the environmental impact caused by the coal mining industry, and to suggest actions (to the miners) in order to minimize the environmental problems. This study presents a review of the occupation process of the Criciuma region, its connection to the coal industry, the progress of the mineral and environmental legislation, and the periodic monitoring of environmental parameters (physic-chemical analysis of the Mae Luzia and Sangao rivers, and the drainage from two coal mines) during the period of three years. This period began before the setting of environmental restrictions, going up to after the adoption of reclamation actions. The results allow to conclude that, during the period studied, there was no improvement in the river water characteristics, despite the adoption of reclamation actions. This behaviour may be due to the following factors: there are several

  11. Coal mine reclamation: the cooperative approach

    Energy Technology Data Exchange (ETDEWEB)

    Blazenko, E J; Kuhn, J A

    1976-07-01

    Salient problems encountered in coal mine reclamation include land use and environmental protection values, license applications and subsequent reports, and the development of sound reclamation planning programs. The facts of life to be dealt with in reclamation and reclamation planning include encounters with negative attitudes toward reclamation, basic physics, chemistry, biology and geology, and the ability or inability to respond properly. The cooperative approach to reclamation includes interfacing with mining company personnel, government agencies, public-interest groups and consultants. Some promising solutions to reclamation, especially in alpine and subalpine regions, include handling of materials and organic test plot research.

  12. 30 CFR 816.83 - Coal mine waste: Refuse piles.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Coal mine waste: Refuse piles. 816.83 Section... ACTIVITIES § 816.83 Coal mine waste: Refuse piles. Refuse piles shall meet the requirements of § 816.81, the... drainage may not be diverted over the outslope of the refuse piles. Runoff from the areas above the refuse...

  13. 30 CFR 817.83 - Coal mine waste: Refuse piles.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Coal mine waste: Refuse piles. 817.83 Section... ACTIVITIES § 817.83 Coal mine waste: Refuse piles. Refuse piles shall meet the requirements of § 817.81, the... drainage may not be diverted over the outslope of the refuse pile. Runoff from areas above the refuse pile...

  14. 78 FR 79010 - Criteria to Certify Coal Mine Rescue Teams

    Science.gov (United States)

    2013-12-27

    ... coal requires more heat to combust; (3) anthracite dust does not propagate an explosion; and (4) there... to Certify Coal Mine Rescue Teams AGENCY: Mine Safety and Health Administration, Labor. ACTION... updated the coal mine rescue team certification criteria. The Mine Improvement and New Emergency Response...

  15. Adaptation policy in hard coal mining. Die Anpassungspolitik im Steinkohlenbergbau

    Energy Technology Data Exchange (ETDEWEB)

    Brink, H J; Haas, H; Jochum, E; Muellendorff, R; Rolshoven, H

    1981-01-01

    The book points out the necessity of balancing the output of hard coal mines. Detailed analyses of marketing conditions serve as a decision aid for business policy. Production and sales trends in German hard coal mining, instruments of adaptation to quantitative changes in sales, and empirical investigations of adaptation instruments in the underground part of the Goettelborn mine are reviewed.

  16. 30 CFR 716.4 - Special bituminous coal mines.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Special bituminous coal mines. 716.4 Section... INTERIOR INITIAL PROGRAM REGULATIONS SPECIAL PERFORMANCE STANDARDS § 716.4 Special bituminous coal mines. (a) Definition. Special bituminous coal surface mines as used in this section means those bituminous...

  17. 30 CFR 49.30 - Requirements for small coal mines.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Requirements for small coal mines. 49.30 Section 49.30 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR EDUCATION AND TRAINING MINE RESCUE TEAMS Mine Rescue Teams for Underground Coal Mines § 49.30 Requirements for small coal...

  18. 30 CFR 49.40 - Requirements for large coal mines.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Requirements for large coal mines. 49.40 Section 49.40 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR EDUCATION AND TRAINING MINE RESCUE TEAMS Mine Rescue Teams for Underground Coal Mines § 49.40 Requirements for large coal...

  19. Implementation of Paste Backfill Mining Technology in Chinese Coal Mines

    Science.gov (United States)

    Chang, Qingliang; Zhou, Huaqiang; Bai, Jianbiao

    2014-01-01

    Implementation of clean mining technology at coal mines is crucial to protect the environment and maintain balance among energy resources, consumption, and ecology. After reviewing present coal clean mining technology, we introduce the technology principles and technological process of paste backfill mining in coal mines and discuss the components and features of backfill materials, the constitution of the backfill system, and the backfill process. Specific implementation of this technology and its application are analyzed for paste backfill mining in Daizhuang Coal Mine; a practical implementation shows that paste backfill mining can improve the safety and excavation rate of coal mining, which can effectively resolve surface subsidence problems caused by underground mining activities, by utilizing solid waste such as coal gangues as a resource. Therefore, paste backfill mining is an effective clean coal mining technology, which has widespread application. PMID:25258737

  20. 30 CFR 817.87 - Coal mine waste: Burning and burned waste utilization.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Coal mine waste: Burning and burned waste...-UNDERGROUND MINING ACTIVITIES § 817.87 Coal mine waste: Burning and burned waste utilization. (a) Coal mine... extinguishing operations. (b) No burning or unburned coal mine waste shall be removed from a permitted disposal...

  1. 30 CFR 816.87 - Coal mine waste: Burning and burned waste utilization.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Coal mine waste: Burning and burned waste...-SURFACE MINING ACTIVITIES § 816.87 Coal mine waste: Burning and burned waste utilization. (a) Coal mine... extinguishing operations. (b) No burning or burned coal mine waste shall be removed from a permitted disposal...

  2. 30 CFR 75.1907 - Diesel-powered equipment intended for use in underground coal mines.

    Science.gov (United States)

    2010-07-01

    ... underground coal mines. 75.1907 Section 75.1907 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR COAL MINE SAFETY AND HEALTH MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Diesel-Powered Equipment § 75.1907 Diesel-powered equipment intended for use in underground coal mines. (a) As of...

  3. Decontamination of coal mine effluent generated at the Rajrappa coal mine using phytoremediation technology.

    Science.gov (United States)

    Lakra, Kalpana C; Lal, B; Banerjee, T K

    2017-06-03

    Toxicity of the effluent generated at the Rajrappa coal mine complex under the Central Coalfields Limited (CCL, a subsidiary of Coal India Limited) in Jharkhand, India was investigated. The concentrations (mg L -1 ) of all the toxic metals (Fe, Mn, Ni, Zn, Cu, Pb, Cr, and Cd) in the coal mine effluent were above the safe limit suggested by the Environmental Protection Agency (EPA 2003). Among these, Fe showed the highest concentration (18.21 ± 3.865), while Cr had the lowest effluent concentration (0.15 ± 0.014). Efforts were also made to detoxify the effluent using two species of aquatic macrophytes namely "'Salvinia molesta and Pistia stratiotes." After 10 days of phytoremediation, S. molesta removed Pb (96.96%) > Ni (97.01%) > Cu (96.77%) > Zn (96.38%) > Mn (96.22%) > Fe (94.12%) > Cr (92.85%) > Cd (80.99%), and P. stratiotes removed Pb (96.21%) > Fe (94.34%) > Ni (92.53%) > Mn (85.24%) > Zn (79.51%) > Cr (78.57%) > Cu (74.19%) > Cd (72.72%). The impact of coal mine exposure on chlorophyll content showed a significant decrease of 42.49% and 24.54% from control values in S. molesta and P. stratiotes, respectively, perhaps due to the damage inflicted by the toxic metals, leading to the decay of plant tissues.

  4. ANFO bulk loading in coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Gajjar, A.

    1987-08-01

    With India's total coal production projected to increase from 152 to 237 million tons by 1990, net additional production from new mines must be more because of substantial depletion in existing mines. This article discusses the best possible application of explosive techniques in open-cast coal mines to economize production cost. The most energy-efficient and safest explosive is ANFO (ammonium nitrate, fuel oil); however, manual charging by INFO is not possible. Therefore, the solution is the application of bulk-loading systems of ANFO for giant mining operations. Cost of blasting per ton of coal production in India is in the range of Rs 25. Thus, the author suggests it will be the responsibility of mining engineers to see that the ANFO based bulk-loading system is implemented and the cost of production per ton reduced to Rs 19.50.

  5. Pneumatic automation systems in coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Shmatkov, N.A.; Kiklevich, Yu.N.

    1981-04-01

    Giprougleavtomatizatsiya, Avtomatgormash, Dongiprouglemash, VNIIGD and other plants develop 30 new pneumatic systems for mine machines and equipment control each year. The plants produce about 200 types of pneumatic systems. Major pneumatic systems for face systems, machines and equipment are reviewed: Sirena system for remote control of ANShch and AShchM face systems for steep coal seams, UPS control systems for pump stations, PAUZA control system for stowing machines, remote control system of B100-200 drilling machines, PUSK control system for coal cutter loaders with pneumatic drive (A-70, Temp), PUVSh control system for ventilation barriers activated from moving electric locomotives, PAZ control system for skip hoist loading. Specifications of the systems are given. Economic benefit produced by the pneumatic control systems are evaluated (from 1,500 to 40,000 rubles/year). Using the systems increases productivity of face machines and other machines used in black coal mines by 5 to 30%.

  6. Conversion of Coal Mine Gas to LNG

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2016-02-05

    This project evolved from a 1995, DOE-NETL competitive solicitation for practical CMM capture and utilization concepts. Appalachian Pacific was one of three companies selected to proceed with the construction and operation of a cost-shared demonstration plant. In the course of trying to proceed with this demonstration plant, AP examined several liquefaction technologies, discussed obtaining rights to coal mine methane with a number of coal companies, explored marketing potential with a wide variety of customers in many sections of the United States, studied in great detail the impact of a carbon credit exchange, and developed a suite of analytical tools with which to evaluate possible project options. In the end, the newness of the product, reluctance on the part of the coal companies to venture away from time tested practices, difficulty with obtaining financing, the failure of a carbon credit market to develop and the emergence of shale derived gas production prevented a demonstration plant from being built.

  7. Open-pit coal mine production sequencing incorporating grade blending and stockpiling options: An application from an Indian mine

    Science.gov (United States)

    Kumar, Ashish; Chatterjee, Snehamoy

    2017-05-01

    Production scheduling is a crucial aspect of the mining industry. An optimal and efficient production schedule can increase the profits manifold and reduce the amount of waste to be handled. Production scheduling for coal mines is necessary to maintain consistency in the quality and quantity parameters of coal supplied to power plants. Irregularity in the quality parameters of the coal can lead to heavy losses in coal-fired power plants. Moreover, the stockpiling of coal poses environmental and fire problems owing to low incubation periods. This article proposes a production scheduling formulation for open-pit coal mines including stockpiling and blending opportunities, which play a major role in maintaining the quality and quantity of supplied coal. The proposed formulation was applied to a large open-pit coal mine in India. This contribution provides an efficient production scheduling formulation for coal mines after utilizing the stockpile coal within the incubation periods with the maximization of discounted cash flows. At the same time, consistency is maintained in the quality and quantity of coal to power plants through blending and stockpiling options to ensure smooth functioning.

  8. Model of environmental life cycle assessment for coal mining operations

    Energy Technology Data Exchange (ETDEWEB)

    Burchart-Korol, Dorota, E-mail: dburchart@gig.eu; Fugiel, Agata, E-mail: afugiel@gig.eu; Czaplicka-Kolarz, Krystyna, E-mail: kczaplicka@gig.eu; Turek, Marian, E-mail: mturek@gig.eu

    2016-08-15

    This paper presents a novel approach to environmental assessment of coal mining operations, which enables assessment of the factors that are both directly and indirectly affecting the environment and are associated with the production of raw materials and energy used in processes. The primary novelty of the paper is the development of a computational environmental life cycle assessment (LCA) model for coal mining operations and the application of the model for coal mining operations in Poland. The LCA model enables the assessment of environmental indicators for all identified unit processes in hard coal mines with the life cycle approach. The proposed model enables the assessment of greenhouse gas emissions (GHGs) based on the IPCC method and the assessment of damage categories, such as human health, ecosystems and resources based on the ReCiPe method. The model enables the assessment of GHGs for hard coal mining operations in three time frames: 20, 100 and 500 years. The model was used to evaluate the coal mines in Poland. It was demonstrated that the largest environmental impacts in damage categories were associated with the use of fossil fuels, methane emissions and the use of electricity, processing of wastes, heat, and steel supports. It was concluded that an environmental assessment of coal mining operations, apart from direct influence from processing waste, methane emissions and drainage water, should include the use of electricity, heat and steel, particularly for steel supports. Because the model allows the comparison of environmental impact assessment for various unit processes, it can be used for all hard coal mines, not only in Poland but also in the world. This development is an important step forward in the study of the impacts of fossil fuels on the environment with the potential to mitigate the impact of the coal industry on the environment. - Highlights: • A computational LCA model for assessment of coal mining operations • Identification of

  9. Response of plant species to coal-mine soil materials

    Energy Technology Data Exchange (ETDEWEB)

    Day, A.D.; Tucker, T.C.; Thames, J.L.

    1983-03-01

    The two-year Black Mesa Coal Mine Research Study on the area near Kayenta, Arizona investigating the growth and establishment of seven plant species in unmined soil and coal-mined soils found that plant species grew better in unmined soil and that irrigation is essential during seedling establishment for the effective stabilization of coal-mined soils in a semi-arid environment. Differences among the species included variations in germination, response to irrigation, seedling establishment, and stem growth. 12 references, 2 figures, 2 tables.

  10. Model of environmental life cycle assessment for coal mining operations

    International Nuclear Information System (INIS)

    Burchart-Korol, Dorota; Fugiel, Agata; Czaplicka-Kolarz, Krystyna; Turek, Marian

    2016-01-01

    This paper presents a novel approach to environmental assessment of coal mining operations, which enables assessment of the factors that are both directly and indirectly affecting the environment and are associated with the production of raw materials and energy used in processes. The primary novelty of the paper is the development of a computational environmental life cycle assessment (LCA) model for coal mining operations and the application of the model for coal mining operations in Poland. The LCA model enables the assessment of environmental indicators for all identified unit processes in hard coal mines with the life cycle approach. The proposed model enables the assessment of greenhouse gas emissions (GHGs) based on the IPCC method and the assessment of damage categories, such as human health, ecosystems and resources based on the ReCiPe method. The model enables the assessment of GHGs for hard coal mining operations in three time frames: 20, 100 and 500 years. The model was used to evaluate the coal mines in Poland. It was demonstrated that the largest environmental impacts in damage categories were associated with the use of fossil fuels, methane emissions and the use of electricity, processing of wastes, heat, and steel supports. It was concluded that an environmental assessment of coal mining operations, apart from direct influence from processing waste, methane emissions and drainage water, should include the use of electricity, heat and steel, particularly for steel supports. Because the model allows the comparison of environmental impact assessment for various unit processes, it can be used for all hard coal mines, not only in Poland but also in the world. This development is an important step forward in the study of the impacts of fossil fuels on the environment with the potential to mitigate the impact of the coal industry on the environment. - Highlights: • A computational LCA model for assessment of coal mining operations • Identification of

  11. What differences does age make? Coal mining injuries

    Energy Technology Data Exchange (ETDEWEB)

    Mallett, L.; Schwerha, D.J. [National Institute for Occupational Safety and Health, Pittsburgh, PA (United States). Research Laboratory

    2007-02-15

    The US Bureau of Labor Statistics says that in 2002 the coal mine workforce in the USA had a higher medium age than the workforce in any other sector of mining. Many older miners are part of the generation group known as Baby Boomers. The article gives figures for injuries received in underground coal mining, surface coal mining and coal preparation plant workers, analysed by age groups (Nexters, {lt}22; Generation Xers, 22-41; Baby Boomers, 42-59; Veterans, 60 and above), and also by job title. In all generation groups, more injuries were recorded in miners with less than two years experience. 4 refs., 3 tabs., 6 charts.

  12. CO(2), CO, and Hg emissions from the Truman Shepherd and Ruth Mullins coal fires, eastern Kentucky, USA.

    Science.gov (United States)

    O'Keefe, Jennifer M K; Henke, Kevin R; Hower, James C; Engle, Mark A; Stracher, Glenn B; Stucker, J D; Drew, Jordan W; Staggs, Wayne D; Murray, Tiffany M; Hammond, Maxwell L; Adkins, Kenneth D; Mullins, Bailey J; Lemley, Edward W

    2010-03-01

    Carbon dioxide (CO(2)), carbon monoxide (CO), and mercury (Hg) emissions were quantified for two eastern Kentucky coal-seam fires, the Truman Shepherd fire in Floyd County and the Ruth Mullins fire in Perry County. This study is one of the first to estimate gas emissions from coal fires using field measurements at gas vents. The Truman Shepherd fire emissions are nearly 1400t CO(2)/yr and 16kg Hg/yr resulting from a coal combustion rate of 450-550t/yr. The sum of CO(2) emissions from seven vents at the Ruth Mullins fire is 726+/-72t/yr, suggesting that the fire is consuming about 250-280t coal/yr. Total Ruth Mullins fire CO and Hg emissions are estimated at 21+/-1.8t/yr and >840+/-170g/yr, respectively. The CO(2) emissions are environmentally significant, but low compared to coal-fired power plants; for example, 3.9x10(6)t CO(2)/yr for a 514-MW boiler in Kentucky. Using simple calculations, CO(2) and Hg emissions from coal-fires in the U.S. are estimated at 1.4x10(7)-2.9x10(8)t/yr and 0.58-11.5t/yr, respectively. This initial work indicates that coal fires may be an important source of CO(2), CO, Hg and other atmospheric constituents.

  13. Possibilities of professional career in the German coal mining industry

    Energy Technology Data Exchange (ETDEWEB)

    Gierhardt, H; Mader, S

    1977-06-01

    Development and age structure of the labor force. Possibilities and courses of professional training in the German coal mining industry. Choice of profession and possibilities of promotion. More advertising campaigns necessary to obtain recruits for mining work.

  14. Latest developments in the utilization of coal mining wastes

    Energy Technology Data Exchange (ETDEWEB)

    Canibano, J G [HUNOSA, Oviedo (Spain)

    1996-12-31

    This report summarizes recent studies carried out on coal mining wastes (minestones) of Spain. These studies proved that such wastes can be used as filling materials in reinforced earth structures, capping layers of roads, substratum in hydroponic cultures and fuel.

  15. Analysis on safety production in coal mines Henan Province

    Institute of Scientific and Technical Information of China (English)

    KONG Liu-an; ZHANG Wen-yong

    2006-01-01

    Based on the rigorous situation of safety production in coal mines, the paper analyzed the statistical data of recent accidents indexes in Henan's coal mines. Using investigation and comparison analysis methods, a specified analysis on mining conditions, technical facility level, safety input and vocational quality of workers in Henan's coal mines was conducted. The result indicates that there have been existing such main safety production problems as weak safety management, low-level facilities, inadequate safety input and poor vocational quality and so on. Finally it proposes such reference solutions as to establish and perfect coal mining supervision and management system, to increase safety investment into techniques and facilities and to strengthen workers' safety education and introduction of more high-level professional talents.

  16. Model of environmental life cycle assessment for coal mining operations.

    Science.gov (United States)

    Burchart-Korol, Dorota; Fugiel, Agata; Czaplicka-Kolarz, Krystyna; Turek, Marian

    2016-08-15

    This paper presents a novel approach to environmental assessment of coal mining operations, which enables assessment of the factors that are both directly and indirectly affecting the environment and are associated with the production of raw materials and energy used in processes. The primary novelty of the paper is the development of a computational environmental life cycle assessment (LCA) model for coal mining operations and the application of the model for coal mining operations in Poland. The LCA model enables the assessment of environmental indicators for all identified unit processes in hard coal mines with the life cycle approach. The proposed model enables the assessment of greenhouse gas emissions (GHGs) based on the IPCC method and the assessment of damage categories, such as human health, ecosystems and resources based on the ReCiPe method. The model enables the assessment of GHGs for hard coal mining operations in three time frames: 20, 100 and 500years. The model was used to evaluate the coal mines in Poland. It was demonstrated that the largest environmental impacts in damage categories were associated with the use of fossil fuels, methane emissions and the use of electricity, processing of wastes, heat, and steel supports. It was concluded that an environmental assessment of coal mining operations, apart from direct influence from processing waste, methane emissions and drainage water, should include the use of electricity, heat and steel, particularly for steel supports. Because the model allows the comparison of environmental impact assessment for various unit processes, it can be used for all hard coal mines, not only in Poland but also in the world. This development is an important step forward in the study of the impacts of fossil fuels on the environment with the potential to mitigate the impact of the coal industry on the environment. Copyright © 2016 Elsevier B.V. All rights reserved.

  17. Coal mine enterprise integration based on strategic alliance

    Energy Technology Data Exchange (ETDEWEB)

    Zhou, Q.; Sun, J.; Xu, S. [Tsinghua University, Beijing (China). Dept. of Computer Science and Technology

    2003-07-01

    The relationship between coal mine and related enterprise was analysed. Aiming at the competitive world market as well as the dynamic requirement, a coal mine enterprise integration strategy and a enterprise strategic alliance were proposed for the product providing service business pattern. The modelling method of the enterprise strategic alliance was proposed, including the relationship view model, information view model and business process view model. The idea of enterprise strategic alliance is useful for enterprise integration. 6 refs., 2 figs.

  18. Mining engineer requirements in a German coal mine

    Energy Technology Data Exchange (ETDEWEB)

    Rauhut, F J

    1985-10-01

    Basic developments in German coal mines, new definitions of working areas of mining engineers, and groups of requirements in education are discussed. These groups include: requirements of hard-coal mining at great depth and in extended collieries; application of process technology and information systems in semi-automated mines; thinking in processes and systems; organizational changes; future requirements of mining engineers; responsibility of the mining engineer for employees and society.

  19. Polymers for combatting sudden outbursts in coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Gadzhiev, G P; Sukhanov, V V

    1988-02-01

    Describes investigations in coal mines in the Donetsk basin (hazardous because of the high methane presence, the risk of outbursts of coal and gas, underground fires and the high dust levels) with the aim of studying the toxic emissions of formaldehyde and methanol produced when a urea formaldehyde resin binder is applied to the coal seam. The measurements taken led to the following recommendations: the amount of free formaldehyde in the binder should be limited to 0.5%; the use of concentrated (50%) solutions should be limited to 10 l per ton of coal in areas where there are geologic faults; underground workings need ventilation of at least 200 m/sup 3//min; the binder should be introduced to the borehole separately from the water and hardener; individual protection measures and wet dusting should be used during coal extraction; a period of not less than 4 months should elapse between application of the resin and commencement of coal extraction; there should be at least 80 m between the point where the binder is applied and the coal face.

  20. Application of EREP, LANDSAT, and aircraft image data to environmental problems related to coal mining

    Science.gov (United States)

    Amato, R. V.; Russell, O. R.; Martin, K. R.; Wier, C. E.

    1975-01-01

    Remote sensing techniques were used to study coal mining sites within the Eastern Interior Coal Basin (Indiana, Illinois, and western Kentucky), the Appalachian Coal Basin (Ohio, West Virginia, and Pennsylvania) and the anthracite coal basins of northeastern Pennsylvania. Remote sensor data evaluated during these studies were acquired by LANDSAT, Skylab and both high and low altitude aircraft. Airborne sensors included multispectral scanners, multiband cameras and standard mapping cameras loaded with panchromatic, color and color infrared films. The research conducted in these areas is a useful prerequisite to the development of an operational monitoring system that can be peridically employed to supply state and federal regulatory agencies with supportive data. Further research, however, must be undertaken to systematically examine those mining processes and features that can be monitored cost effectively using remote sensors and for determining what combination of sensors and ground sampling processes provide the optimum combination for an operational system.

  1. LANDSAT remote sensing: observations of an Appalachian mountaintop surface coal mining and reclamation operation

    International Nuclear Information System (INIS)

    1979-10-01

    The potential benefits of using LANDSAT remote sensing data by state agencies as an aide in monitoring surface coal mining operations are reviewed. A mountaintop surface mine in eastern Kentucky was surveyed over a 5 year period using satellite multispectral scanner data that were classified by computer analyses. The analyses were guided by aerial photography and by ground surveys of the surface mines procured in 1976. The application of the LANDSAT data indicates that: (1) computer classification of the various landcover categories provides information for monitoring the progress of surface mining and reclamation operations, (2) successive yearly changes in barren and revegetated areas can be qualitatively assessed for surface mines of 100 acres or more of disrupted area, (3) barren areas consisting of limestone and shale mixtures may be recognized, and revegetated areas in various stages of growth may be identified against the hilly forest background

  2. Dermatoses of Belchatow brown coal mine employees

    Energy Technology Data Exchange (ETDEWEB)

    Ruszczak, Z.; Bienias, L.; Proszczynska-Kuczynska, W.

    1981-09-01

    Evaluates the results of examinations carried out in the Belchatow brown coal surface mine on skin diseases. Influence of working conditions specific for brown coal mines on the development of some dermatoses is analyzed. From 1978 to 1979 443 miners were examined. Two groups of miners were examined separately: 1. 235 miners who contacted the firm physician due to skin problems and 2. 208 miners who underwent a periodic examination. In group 1 skin dermatoses were found in 86% of all cases, and in group 2 in 48%. Foot skin inflammation, particularly interdigital intertrigo, was the most common dermatosis. Oil acne (occupational disease of coal miners) was diagnosed in 15 cases, common acne in 23 cases, pytiriasis versicolor in 19 cases, erythrasma in 10, eczema and other contact dermatitis in 10 cases. Investigations show that 23% of the foot interdigital intertrigo is caused by mycotic infections. Dermatoses of the skin of miners' feet are caused mainly by rubber protective boots. (10 refs.) (In Polish)

  3. Microbial ecology of coal mine refuse

    Energy Technology Data Exchange (ETDEWEB)

    Cameron, R. E.; Miller, R. M.

    1977-01-01

    Baseline microbial and ecological studies of samples obtained from two abandoned coal mine refuse sites in the State of Illinois indicate that the unfavorable nature of refuse materials can be a very limiting factor for survival and growth of organisms. Despite the ''foothold'' obtained by some microorganisms, especially acidophilic fungi and some acidotolerant algae, the refuse materials should be amended or ameliorated to raise the pH, provide needed nutrients, especially nitrogen, and provide biodegradable organic matter, both for physical and biological purposes. Finally, the role of microbial populations, responses, and interactions in acid mine wastes must be put into larger perspective. Acid mine drainage amounts to over 4 million tons per year of acidity from active and abandoned mines. Microorganisms appear to be significantly responsible for this problem, but they also can play a beneficial and significant role in the amelioration or alleviation of this detrimental effect as abandoned mines are reclaimed and returned to useful productivity.

  4. Greenhouse gas emission from Australian coal mining

    International Nuclear Information System (INIS)

    Williams, D.

    1998-01-01

    Since 1997, when the Australian Coal Association (ACA) signed a letter of Intent in respect of the governments Greenhouse Challenge Program, it has encouraged its member companies to participate. Earlier this year, the ACA commissioned an independent scoping study on greenhouse gas emissions in the black coal mining industry This was to provide background information, including identification of information gaps and R and D needs, to guide the formulation of a strategy for the mitigation of greenhouse gas emissions associated with the mining, processing and handling of black coals in Australia. A first step in the process of reducing emission levels is an appreciation of the source, quantity and type of emissions om nine sites. It is shown that greenhouse gas emissions on mine sites come from five sources: energy consumption during mining activities, the coal seam gas liberated due to the extraction process i.e. fugitive emissions, oxidation of carbonaceous wastes, land use, and embodied energy. Also listed are indications of the degree of uncertainty associated with each of the estimates

  5. Dermatoses of Belchatow brown coal mine employees

    Energy Technology Data Exchange (ETDEWEB)

    Ruszczak, Z; Bienias, L; Proszczynska-Kuczynska, W

    1981-09-01

    Evaluates the results of examinations carried out in the Belchatow brown coal surface mine on skin diseases. Influence of working conditions specific for brown coal mines on the development of some dermatoses is analyzed. From 1978 to 1979 443 miners were examined. Two groups of miners were examined separately: 1. 235 miners who contacted the firm physician due to skin problems and 2. 208 miners who underwent a periodic examination. In group 1 skin dermatoses were found in 86% of all cases, and in group 2 in 48%. Foot skin inflammation, particularly interdigital intertrigo, was the most common dermatosis. Oil acne (occupational disease of coal miners) was diagnosed in 15 cases, common acne in 23 cases, pytiriasis versicolor in 19 cases, erythrasma in 10, eczema and other contact dermatitis in 10 cases. Investigations show that 23% of the foot interdigital intertrigo is caused by mycotic infections. Dermatoses of the skin of miners' feet are caused mainly by rubber protective boots. (10 refs.) (In Polish)

  6. Remote control of safety and technological mining processes in underground coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Marjanovic, D. (Elektronska Industrija RO IRI OOUR Razvoj, Nis (Yugoslavia))

    1989-02-01

    Discusses importance of data relevant to remote monitoring of production and safety at work in underground coal mines. The EI PS 2000 multi-purpose system developed by Elektronska Industrija, Nis, for use with AP-X1 and AP-X2 microcomputers in Serbian mines is described. Component parts include the CUM-8 central unit, the CIP-8 communication interface processor, the SNM-64 disjunction unit, the NM-64 energy supply unit and the CRT alarm monitor. This system is designed to warn of mine fires, methane and coal dust explosions, to help in evacuating mine crews, to control production processes and mine management and other functions. 8 refs

  7. Question marks of the Czech coal mining industry

    International Nuclear Information System (INIS)

    Dopita, M.; Pesek, J.

    1995-01-01

    An overview of brown and black coal mining in the Czech Republic is presented, and problems of the extent of coal reserves and of the profitability of deep black coal mining are discussed. Costs of coal mining in foreign countries are given. Coal mining in the Czech Republic can be expected to be loss-making unless coal prices are increased. Since coal resources in the Czech Republic are limited, additional nuclear power plants will have to be constructed or else coal for power generation will have to be imported. The environmental aspects of coal mining and burning are discussed. Medium-term and long-term solutions to reduce the environmental burden include thermal power plant desulfurization, application of the fluidized-bed combustion regime to coals with large ash and/or sulfur contents, and introduction of gas in towns and power plants. In the short run, large-scale consumers in towns and coal basins should be obliged to accumulate reserves of low-sulfur coal for later use. (J.B.). 2 tabs., 3 figs., 8 refs

  8. Depositional history of the Fire Clay coal bed (Late Duckmantian), Eastern Kentucky, USA

    Science.gov (United States)

    Greb, S.F.; Eble, C.F.; Hower, J.C.

    1999-01-01

    More than 3800 coal thickness measurements, proximate analyses from 97 localities, and stratigraphic and sedimentological analyses from more than 300 outcrops and cores were used in conjunction with previously reported palynological and petrographic studies to map individual benches of the coal and document bench-scale variability in the Fire Clay (Hazard No. 4) coal bed across a 1860 km2 area of the Eastern Kentucky Coal Field. The bench architecture of the Fire Clay coal bed consists of uncommon leader benches, a persistent but variable lower bench, a widespread, and generally thick upper bench, and local, variable rider benches. Rheotrophic conditions are inferred for the leader benches and lower bench based on sedimentological associations, mixed palynomorph assemblages, locally common cannel coal layers, and generally high ash yields. The lower bench consistently exhibits vertical variability in petrography and palynology that reflects changing trophic conditions as topographic depressions infilled. Infilling also led to unconfined flooding and ultimately the drowning of the lower bench mire. The drowned mire was covered by an air-fall volcanic-ash deposit, which produced the characteristic flint clay parting. The extent and uniform thickness of the parting suggests that the ash layer was deposited in water on a relatively flat surface without a thick canopy or extensive standing vegetation across most of the study area. Ash deposits led to regional ponding and establishment of a second planar mire. Because the topography had become a broadly uniform, nutrient-rich surface, upper-bench peats became widespread with large areas of the mire distant to clastic sources. Vertical sections of thick (> 70 cm), low-ash yield, upper coal bench show a common palynomorph change from arborescent lycopod dominance upward to fern and densospore-producing, small lycopod dominance, inferred as a shift from planar to ombrotrophic mire phases. Domed mires appear to have been

  9. Studies of significant properties of filter-type self rescuer for its use in underground coal mine in carbon monoxide exposure

    Energy Technology Data Exchange (ETDEWEB)

    Kumar, A.; Mondal, P.C. [Central Institute of Mining and Fuel Research, Dhanbad (India)

    2007-07-01

    CO is a highly toxic gas; it is the outcome of fire or explosion in underground coal mines. It combines with hemoglobin of coal mine workers and carboxyhemoglobin forms, which reduces the oxygen carrying capacity of blood. A little intake of CO gas, even 0.1% in atmosphere, causes respiratory failure. Filter-type self rescuers (FSR) are a life-saving gas mask breathing apparatus against CO exposure in underground coal mine. The quality of FSR was evaluated in respect of its duration for use, CO conversion by hopcalite, breathing resistance, leak tightness properties, and so on. A scope of improvement is observed in cartridge of self rescuer as well as in the clauses of BIS 9563-1980 in order to increase the duration and improvement in the quality of self rescuers. 12 refs., 2 tabs.

  10. Aquatic ecosystems in the coal mining landscape of the upper Olifants River, and the way forward

    CSIR Research Space (South Africa)

    Oberholster, Paul J

    2014-03-01

    Full Text Available can provide guidance on managing water ecosystems in the future at various stages of mining operations, which include understanding the interface between water ecosystems and coal mining activities, assessing the likelihood of coal mining activities...

  11. British Managing Agencies in Indian coal mining, 1893-1918

    Energy Technology Data Exchange (ETDEWEB)

    Papendieck, H

    1975-09-01

    The role of British managing agencies in Bengal coal mining at the turn of the century is reviewed. The consequences of the managing agency system as a form of capital organisation in Bengal on the goals and rate of industrialisation in Bengal (and in India) are investigated for the example of coal mining. After a historical outline, the development of Indian coal mining, the organisational structure of the managing agencies, the structure of on average Indian colliery at the turn of the century, and the development of the Andrew Yule and Co. Managing Agency are discussed. The behaviour of the Katras-Jherria Coal Company and its associates, the Bengal Coal Company, and the consequency system on Bengal's economic development are described.

  12. Environmental impact assessment for surface coal mine - a case study

    International Nuclear Information System (INIS)

    Sen, P.; Chakraborty, K.

    1994-01-01

    Surface coal mines being the largest contributor to the national coal production, the study of environmental impacts due to this becomes mandatory as it will help in proper planning and safe operations of the mine in an environmentally compatible manner. Within the scope of this paper, a model for preparation of comprehensive environmental impact assessment (EIA) by utilising a new evaluation methodology leading to determination of Environmental Quality Designation an index has been developed and this model has been validated by using data from a running surface coal mine in Wardha Valley Coalfield. Based on this exercise, the overall impact of the surface coal mine under consideration on environment indicates a medium level and accordingly the control measures have to be planned. Thus repair to the environment has to be made a concurrent activity with mining i.e. to say we have to design with nature not against it

  13. Safety and welfare of Australian black coal mine employees

    Energy Technology Data Exchange (ETDEWEB)

    Azia, N.I.; Cram, K. [University of Wollongong, Wollongong, NSW (Australia). Faculty of Engineering

    2001-07-01

    The paper outlines the status of Australian coal mining industry with respect to safety and welfare of the mine employee. The impact of the longer shift hours and compressed working week are discussed in relation to workers safety and employment levels. Longer shift hours and compressed works have been shown to be a benefit to miners, both in safety and socially. The paper also examines the role of each of government organisations, the mining and manufacturing industries on the issue and goes on to describe the various environmental control measures introduced to the Australian coal mines to ensure that high safety standards are maintained. Dust monitoring and control, noise pollution control, and diesel particulate control measures have been targeted vigorously and as a result there has been a continued drop in the coal mine related diseases as well as a decline in the workers lost time injury claims. 11 refs., 7 figs., 6 tabs.

  14. Simulating the Various Subsystems of a Coal Mine

    Directory of Open Access Journals (Sweden)

    V. Okolnishnikov

    2016-06-01

    Full Text Available A set of simulation models of various subsystems of a coal mine was developed with the help of a new visual interactive simulation system of technological processes. This paper contains a brief description of this simulation system and its possibilities. The main possibilities provided by the simulation system are: the quick construction of models from library elements, 3D representation, and the communication of models with actual control systems. These simulation models were developed for the simulation of various subsystems of a coal mine: underground conveyor network subsystems, pumping subsystems and coal face subsystems. These simulation models were developed with the goal to be used as a quality and reliability assurance tool for new process control systems in coal mining.

  15. Lung disease and coal mining: what pulmonologists need to know.

    Science.gov (United States)

    Go, Leonard H T; Krefft, Silpa D; Cohen, Robert A; Rose, Cecile S

    2016-03-01

    Coal mine workers are at risk for a range of chronic respiratory diseases including coal workers' pneumoconiosis, diffuse dust-related fibrosis, and chronic obstructive pulmonary disease. The purpose of this review is to describe coal mining processes and associated exposures to inform the diagnostic evaluation of miners with respiratory symptoms. Although rates of coal workers' pneumoconiosis declined after regulations were enacted in the 1970s, more recent data shows a reversal in this downward trend. Rapidly progressive pneumoconiosis with progressive massive fibrosis (complicated coal workers' pneumoconiosis) is being observed with increased frequency in United States coal miners, with histologic findings of silicosis and mixed-dust pneumoconiosis. There is increasing evidence of decline in lung function in individuals with pneumoconiosis. Multiple recent cohort studies suggest increased risk of lung cancer in coal miners. A detailed understanding of coal mining methods and processes allows clinicians to better evaluate and confirm chronic lung diseases caused by inhalational hazards in the mine atmosphere.

  16. 4D seismic data acquisition method during coal mining

    International Nuclear Information System (INIS)

    Du, Wen-Feng; Peng, Su-Ping

    2014-01-01

    In order to observe overburden media changes caused by mining processing, we take the fully-mechanized working face of the BLT coal mine in Shendong mine district as an example to develop a 4D seismic data acquisition methodology during coal mining. The 4D seismic data acquisition is implemented to collect 3D seismic data four times in different periods, such as before mining, during the mining process and after mining to observe the changes of the overburden layer during coal mining. The seismic data in the research area demonstrates that seismic waves are stronger in energy, higher in frequency and have better continuous reflectors before coal mining. However, all this is reversed after coal mining because the overburden layer has been mined, the seismic energy and frequency decrease, and reflections have more discontinuities. Comparing the records collected in the survey with those from newly mined areas and other records acquired in the same survey with the same geometry and with a long time for settling after mining, it clearly shows that the seismic reflections have stronger amplitudes and are more continuous because the media have recovered by overburden layer compaction after a long time of settling after mining. By 4D seismic acquisition, the original background investigation of the coal layers can be derived from the first records, then the layer structure changes can be monitored through the records of mining action and compaction action after mining. This method has laid the foundation for further research into the variation principles of the overburden layer under modern coal-mining conditions. (paper)

  17. Coal mining in the power industry of the Federal Republic of Germany in 2016

    International Nuclear Information System (INIS)

    2017-11-01

    The contribution under consideration reports on the coal mining in the Federal Republic of Germany in the year 2016. Statistical data are presented for the power market and coal market, hard coal mining as well as the brown coal mining. These data consider the energy consumption in Germany, power production, iron and steel production, utilization, re-cultivation and employees.

  18. Coal mining in the power industry of the Federal Republic of Germany in 2015

    International Nuclear Information System (INIS)

    2016-11-01

    The contribution under consideration reports on the coal mining in the Federal Republic of Germany in the year 2015. Statistical data are presented for the power market and coal market, hard coal mining as well as the brown coal mining. These data consider the energy consumption in Germany, power production, iron and steel production, utilization, re-cultivation and employees.

  19. Situation of coal mining in the Federal Republic of Germany. Year 2014

    International Nuclear Information System (INIS)

    2015-01-01

    The paper reports on the coal mining in the Federal Republic of Germany in the year 2014. Statistical data are presented for coal market, brown coal mining as well as the hard coal mining. These data consider the supply and demand of coal in Germany, and employees of the German coal industry.

  20. Coal mining situation in the Federal Republic of Germany. The 1st quarter 2010

    International Nuclear Information System (INIS)

    2010-01-01

    The report on coal mining situation in the Federal Republic of Germany in the 1st quarter 2010 contains the statistical data concerning the following issues: (i) black coal mining: part I: production, resources, accomplishments; employees, part II: marketing and foreign trade; (ii) brown coal mining: part I: production, resources, accomplishments; employees, part II: marketing and foreign trade.

  1. Coal mining situation in the Federal Republic of Germany. First half-year 1994

    International Nuclear Information System (INIS)

    1994-01-01

    The report provides up-to-date information on the German coal mining industry for the reporting time period. Data on coal mining as well as on brown coal mining cover: Production, stocks, productivity, employes, sales, imports and exports of coal and coal products. (orig.) [de

  2. Coal mining situation in the Federal Republic of Germany. Year 2016

    International Nuclear Information System (INIS)

    2017-01-01

    The paper reports on the coal mining in the Federal Republic of Germany in the year 2016. Statistical data are presented for coal market, brown coal mining as well as the hard coal mining. These data consider the supply and demand of coal in Germany, and employees of the German coal industry.

  3. Coal mining situation in the Federal Republic of Germany. Year 2015

    International Nuclear Information System (INIS)

    2016-01-01

    The paper reports on the coal mining in the Federal Republic of Germany in the year 2015. Statistical data are presented for coal market, brown coal mining as well as the hard coal mining. These data consider the supply and demand of coal in Germany, and employees of the German coal industry.

  4. 29 CFR 570.53 - Coal-mine occupations (Order 3).

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Coal-mine occupations (Order 3). 570.53 Section 570.53... § 570.53 Coal-mine occupations (Order 3). (a) Finding and declaration of fact. All occupations in or about any coal mine, except the occupation of slate or other refuse picking at a picking table or...

  5. 78 FR 45566 - Agency Information Collection Activities; Submission for OMB Review; Comment Request; Coal Mine...

    Science.gov (United States)

    2013-07-29

    ... for OMB Review; Comment Request; Coal Mine Dust Sampling Devices ACTION: Notice. SUMMARY: The... information collection request (ICR) titled, ``Coal Mine Dust Sampling Devices,'' to the Office of Management...) determine the concentration of respirable dust in coal mines. CPDMs must be designed and constructed for...

  6. 75 FR 17529 - High-Voltage Continuous Mining Machine Standard for Underground Coal Mines

    Science.gov (United States)

    2010-04-06

    ... High-Voltage Continuous Mining Machine Standard for Underground Coal Mines AGENCY: Mine Safety and... of high-voltage continuous mining machines in underground coal mines. It also revises MSHA's design...-- Underground Coal Mines III. Section-by-Section Analysis A. Part 18--Electric Motor-Driven Mine Equipment and...

  7. 76 FR 10070 - Division of Coal Mine Workers' Compensation; Proposed Extension of Existing Collection; Comment...

    Science.gov (United States)

    2011-02-23

    ... DEPARTMENT OF LABOR Office of Workers' Compensation Programs Division of Coal Mine Workers... Rereading (CM-933b), Medical History and Examination for Coal Mine Workers' Pneumoconiosis (CM-988), Report... interpretation of x-rays. When a miner applies for benefits, the Division of Coal Mine Workers' Compensation...

  8. The hydrogeology and hydrogeochemistry of the Star Fire site, eastern Kentucky

    International Nuclear Information System (INIS)

    Wunsch, D.R.; Dinger, J.S.

    1994-01-01

    The Kentucky Geological Survey is directing an applied research program to determine the potential water supply for future property development at the Star Fire site. It is anticipated that an aquifer constructed in mine spoil could provide base flow to streams that could feed water-supply reservoirs. Dye tracing, water-level measurements, and chemical analyses of water samples indicate that ground water moves slowly in the spoil's interior, where it must flow into surrounding hollow fills before discharging out of the spoil. Two water tables have been established: one in the spoil's interior, and the second in the hollow fills below the main spoil body. Based on an average saturated thickness of 6.4 m, the saturated spoil stores an estimated 5.2 x 10 6 m 3 (1.37 billion gal.) of water. Hydraulic conductivity (K) values derived from slug tests range from 7.0 x E - 5 to > 9.0 x E - 4 cm/sec. All of the waters are a calcium-magnesium-sulfate type, differing mainly in the total concentration of these constituents. Saturation indices calculated using the geochemical model PHREEQE indicate that most of the ground water at the site is near equilibrium with gypsum. Nearly all of the samples had pH measurements in a favorable range between 6.0 and 7.0, indicating that the spoil at the site does not produce highly acidic water

  9. 75 FR 17511 - Coal Mine Dust Sampling Devices

    Science.gov (United States)

    2010-04-06

    ... base and free to oscillate at its narrow or free end on which the collection filter is mounted... coal mines from power stations, electric motors and remote control transmitters. The final rule... electromagnetic interference. The FCC is an independent Federal agency that regulates radiofrequency emitting...

  10. Coal mining in Spain: first half year 1986

    Energy Technology Data Exchange (ETDEWEB)

    1986-01-01

    Statistical data from the first half of 1986 on coal mining in Spain. These figures cover anthracite, bituminous coal and lignite both nationally and for the coal-producing regions of Leon, Asturias, Palencia, Teruel and La Coruna. Special attention is paid to absenteeism and its causes.

  11. 30 CFR 816.84 - Coal mine waste: Impounding structures.

    Science.gov (United States)

    2010-07-01

    ... control, the probable maximum precipitation of a 6-hour precipitation event, or greater event as specified.... Runoff from areas above the disposal facility or runoff from surface of the facility that may cause...-hour design precipitation event. (e) Impounding structures constructed of or impounding coal mine waste...

  12. Revegetation of coal mine soil with forest litter

    Energy Technology Data Exchange (ETDEWEB)

    Day, A.D.; Ludeke, K.L.; Thames, J.L.

    1986-11-01

    Forest litter, a good source of organic matter and seeds, was applied on undisturbed soil and on coal mine (spoils) in experiments conducted on the Black Mesa Coal Mine near Kayenta, Arizona over a 2-year period (1977-1978). Germination, seedling establishment, plant height and ground cover were evaluated for two seeding treatments (forest litter and no forest litter) and two soil moisture treatments (natural rainfall and natural rainfall plus irrigation). The forest litter was obtained at random from the Coconino National Forest, broadcast over the surface of the soil materials and incorporated into the surface 5 cm of each soil material. Germination, seedling establishment, plant height and ground cover on undisturbed soil and coal mine soil were higher when forest litter was applied than when it was not applied and when natural rainfall was supplemented with sprinkler irrigation than when rainfall was not supplemented with irrigation. Applications of forest litter and supplemental irrigation may ensure successful establishment of vegetation on areas disturbed by open-pit coal mining.

  13. Effect of timber supplies on the efficiency of coal mining

    Energy Technology Data Exchange (ETDEWEB)

    Kulish, S A; Ponikarov, V D

    1977-01-01

    An analysis is made of the system of supplying coal mining production associations with timber materials. The potential for greater efficiency in the use and processing of timber is indicated. The possibility of using methods of mathematical modelling and forecasting to improve the efficiency of supplying timber to coal associations is demonstrated. 1 table.

  14. Planning, layout and infrastructure of modern coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Haarmann, K R

    1978-02-01

    When designing layout and infrastructure of new coal mines, the principles of planning play a decisive role. Apart from exploration, ventilation, transport, dirt haulage and product haulage, material transport is very important. Illustrated by three examples, modern layout and infrastructure design is presented.

  15. The role of the state coal mining enterprise in Indonesia

    International Nuclear Information System (INIS)

    Mangunwidjaja, I.A.

    1991-01-01

    This paper reports that PT Tambang Batubara Bukit Asam is now becoming one of the 3 State Mining Enterprises in Indonesia which is dealing specifically with coal minings and their developments, while the other 2 are PT Tambang Timah for tin and PT Aneka Tambang for miscellaneous minerals. However, there are actually 3 other more State Enterprises under the umbrella of the Department of Mines and Energy, namely PERTAMINA which is dealing with oil and natural gas exploitation, PLN which is the State Electricity Corporation and the State Gas Corporation. The process of merging into one State Coal Mining Enterprise was only happening on October 30, 1990 by the issuance of the Government Regulation Number 56, 1991 whereby the then called Perum Tambang Batubara was merged into PT Tambang Batubara Bukit Asam, which was then operating only in Tanjung Enim, South Sumatra. The new scope of operation and management of the PT Tambang Batubara Bukit Asam is now including not only the management of coal mines at Tanjung Enim South Sumatra, but also the coal mines at Ombilin, West Sumatra and the supervision of all contract of works in coal which up to now amount to 11, mostly spread in East Kalimantan, South Kalimantan and one in West Sumatra. The amount of coal produced by PT Tambang Batubara Bukit Asam in 1990 was 4,854 million tons, while the coal production from all contract of works was 4,059 million tons for the same year

  16. 78 FR 27442 - Coal Mine Dust Sampling Devices; Correction

    Science.gov (United States)

    2013-05-10

    ... DEPARTMENT OF LABOR Mine Safety and Health Administration Coal Mine Dust Sampling Devices; Correction AGENCY: Mine Safety and Health Administration, Labor. ACTION: Notice; correction. SUMMARY: On April 30, 2013, Mine Safety and Health Administration (MSHA) published a notice in the Federal Register...

  17. Study on regional stratagem for coal mine disasters control and prevention in China

    Energy Technology Data Exchange (ETDEWEB)

    Shen, B.; Lei, Y. [China Coal Research Institute, Beijing (China)

    2009-09-15

    A regional strategy study was aimed at coal mine disaster control and prevention, which deepens and enriches the macro-strategy of coal mine disaster control and prevention, and provides an important support for the rapid and healthy development of China's regional coal industry. The country was divided into 4 regions: Northeast, North, South and Xinqing. In view of the regional status of coal mine disasters, the regulation and development trend of regional coal mine disasters was analysed, the outstanding problems and key factors were identified, and general thoughts on regional coal mine disaster control and prevention are put forward. 4 refs., 4 figs., 1 tab.

  18. Structural implications of underground coal mining in the Mesaverde Group in the Somerset Coal Field, Delta and Gunnison Counties, Colorado

    Energy Technology Data Exchange (ETDEWEB)

    Christopher J. Carroll; Eric Robeck; Greg Hunt; Wendell Koontz [Colorado Geological Survey, Denver, CO (United States)

    2004-07-01

    Paleogene and Neogene faults and fractures on the eastern edge of the Colorado Plateau are present in Mesaverde Group coal and sandstone beds. Recent observations of coal cleat orientation in relation to faults in coal mines have significant impacts for mine planning in the area. Faults, coal cleats, and natural fractures are interpreted to show a structural evolution of the Mesaverde Group through time. This field trip included a visit to two active underground coal mines, the Bowie Resources' Bowie No. 2 Mine, and Mountain Coal's West Elk Mine. Mine geologists discussed structural styles including fault orientations and timing, cleat development, and rotation. Geologic encounters ranging from fault flooding, subsidence, mine fires, methane gas problems, and land use restrictions were also discussed. Coal cleat development and open-mode fractures in adjacent sandstones were observed on outcrops and compared to underground measurements in coal mines in the Somerset Coal Field, Colorado's most productive. Coal cleat orientations along a reverse fault in one mine showed rotation in relation to possible Neogene age displacement.

  19. Environmental impact of coal mine methane emissions and responding strategies in China

    Energy Technology Data Exchange (ETDEWEB)

    Cheng, Y.P.; Wang, L.; Zhang, X.L. [China University of Mining & Technology, Xuzhou (China)

    2011-01-15

    The impact on global climate change from coal mine methane emissions in China has been drawing attention as coal production has powered its economic development. Data on coal mine methane emissions from the State Administration of Coal Mine Safety of China has been analyzed. It is estimated that the methane emission from coal mining in China reached 20 billions of cubic meters in 2008, most of which comes from state-owned coal mines with high-gas content. China releases six times as much of methane from coal mines as compared to the United States. However, Chinese methane emission from coal production accounts for only a very small proportion on the environmental impact when compared to emissions of carbon dioxide from fossil fuel consumption. The Chinese government has shown environmental awareness and resolution on the mitigation and utilization of coal mine methane emissions. Measures have been taken to implement the programs of mitigation and utilization of coal mine methane, and at the same time, to ensure mining safety. Nearly 7.2 billions of cubic meters of methane were drained from the coal mines, and 32% of it was utilized in 2008. The slow advancement of technologies for the drainage and utilization of low-concentration methane from ventilation air hinders the progress of mitigation of atmospheric methane and the utilization of coal mine methane emissions.

  20. Prevention and protection against propagation of explosionsin underground coal mines

    Directory of Open Access Journals (Sweden)

    Л. М. Пейч

    2017-06-01

    Full Text Available Over the past century, the coal mining industry experienced a large number of explosions leading to a considerable loss of life. The objective of this study is preventing the propagation of methane and/or coal dust explosions through the use of passive water barriers and its implementation to the Spanish coal mining industry. Physical and chemical properties, flammability and explosibility parameters of typical Spanish coals are presented. In this paper,   a flexible approach to meet the requirements of the EN-14591-2:2007 standard is presented for the very specific local conditions, characterized by small cross-sections galleries, vertical seem, use of explosives, etc. Authors have proven the viability of standard requirements to the typical roadway from Spanish underground mines, considering realistic roadway lengths as well as available cross-sections taking into account ubiquitous obstacles such as: locomotives, conveyor belt, ventilation ducts, etc.

  1. Performance of underground coal mines during the 1976 Tangshan earthquake

    Energy Technology Data Exchange (ETDEWEB)

    Lee, C.F.

    1987-01-01

    The Tangshan earthquake of 1976 costs 242 000 lives and was responsible for 164 000 serious injuries and structural damage of immense proportion. The area has eight coal mines, which together form the largest underground coal mining operation in China. Approximately 10 000 miners were working underground at the time of the earthquake. With few exceptions they survived and returned safely to the surface, only to find their families and belongings largely destroyed. Based on a comprehensive survey of the miners' observations, subsurface intensity profiles were drawn up. The profiles clearly indicated that seismic damage in the underground mines was far less severe than at the surface. 16 refs., 4 figs., 2 tabs.

  2. Ground engineering principles and practices for underground coal mining

    CERN Document Server

    Galvin, J M

    2016-01-01

    This book teaches readers ground engineering principles and related mining and risk management practices associated with underground coal mining. It establishes the basic elements of risk management and the fundamental principles of ground behaviour and then applies these to the essential building blocks of any underground coal mining system, comprising excavations, pillars, and interactions between workings. Readers will also learn about types of ground support and reinforcement systems and their operating mechanisms. These elements provide the platform whereby the principles can be applied to mining practice and risk management, directed primarily to bord and pillar mining, pillar extraction, longwall mining, sub-surface and surface subsidence, and operational hazards. The text concludes by presenting the framework of risk-based ground control management systems for achieving safe workplaces and efficient mining operations. In addition, a comprehensive reference list provides additional sources of informati...

  3. Digital coal mine integrated automation system based on Controlnet

    Energy Technology Data Exchange (ETDEWEB)

    Jin-yun Chen; Shen Zhang; Wei-ran Zuo [China University of Mining and Technology, Xuzhou (China). School of Chemical Engineering and Technology

    2007-06-15

    A three-layer model for digital communication in a mine is proposed. Two basic platforms are discussed: a uniform transmission network and a uniform data warehouse. An actual, ControlNet based, transmission network platform suitable for the Jining No.3 coal mine in China is presented. This network is an information superhighway intended to integrate all existing and new automation subsystems. Its standard interface can be used with future subsystems. The network, data structure and management decision-making all employ this uniform hardware and software. This effectively avoids the problems of system and information islands seen in traditional mine-automation systems. The construction of the network provides a stable foundation for digital communication in the Jining No.3 coal mine. 9 refs., 5 figs.

  4. Opencast coal mining in India: present status and future trends

    Energy Technology Data Exchange (ETDEWEB)

    Khare, B.P. [Kakatiya University, Warangal (India)

    2007-07-01

    This paper discussed the opencast coal mining in India, present status and future trends including technology trends. The opencast coal mines in the coming years will have to switch over more and more to semi continuous and continuous mining. Whatever be the system adopted it should be sustainable to meet the output levels commensurate with environmental protection, safety, health, conservation and economics. It could, therefore, be summed up that the search for new technologies should be based on: (1) use of continuous miners; (2) use of bucket wheel excavators, conveyors, and spreaders; (3) shovel-crusher and conveyor system; and (4) application of high angle conveyors, cross-pit conveyors, and OB bridges. 4 tabs.

  5. Trust and safety in the coal mining sector

    Energy Technology Data Exchange (ETDEWEB)

    Neil Gunningham; Darren Sinclair [Gunningham and Associates (Australia)

    2008-08-15

    This report examines the relationship between trust (and mistrust) and occupational health and safety (OHS) in the Australian coal mining sector. Previous research in Australian coal mining companies indicated that mistrust is deep-seated at a number of mines, and that these mines are usually the worst performers in terms of OHS. Mistrust also handicaps the ability of inspectors to worker together with mines sites to improve OHS outcomes. Given this, there is a compelling need to understand how mistrust comes about, and to identify practical steps that can be adopted by companies, mines sites and the inspectorate to foster the development of trust. The report builds on these earlier findings by investigating trust in a much more detailed and sophisticated fashion, drawing on an in-depth analysis at mines, across a number of coal mining companies, and in two state jurisdictions. Research revealed that a 'cluster of characteristics' are associated with the formation and maintenance of mistrust at mines with a lower OHS track-record. These findings, together with an analysis of the characteristics of mines with better OHS outcomes, enabled the report to outline a variety of ways in which mines may build trust within and between management and the workforce. It also considers the at times fractious relationship between trade unions and management, and flags some of the challenges confronting these two groups in working together to improve OHS performance in the coal mining sector. Finally, the report examines the rise and impact of mistrust on the operations of the New South Wales and Queensland inspectorates, and suggests ways in which a fairer and more just enforcement policy may help foster greater trust between inspectors and mines.

  6. Gamma radiation hazard to miners in bituminous coal mines

    International Nuclear Information System (INIS)

    Skubacz, K.

    1986-01-01

    Radiation hazard to miners working in 16 bituminous coal mines was determined by a thermoluminescence method. While the miners exposure to gamma radiation is higher than that of the general population, the yearly dose was never found to exceed 5 mSv in any investigated person. Factors contributing to the estimate of the exposure hazard and the need for individual dose monitoring in mines are discussed in more detail. 3 refs., 4 figs. (author)

  7. Environmental aspects of hard coal mines closure in Poland

    International Nuclear Information System (INIS)

    Chaber, M.; Krogulski, K.; Gawlik, L.

    1998-01-01

    The environmental problems that arise during the closure processes of hard coal mines in Poland are undertaken in the paper. The problems of changes in water balance in rock mass are described with a stress put on underground water management. Regulation concerning ground reclamation and utilisation and removal of existing heat and power plants which after the mines closure will continue to supply surrounding consumers are stressed and the possible solutions are shown. 13 refs

  8. Design Criteria for Wireless Mesh Communications in Underground Coal Mines

    OpenAIRE

    Griffin, Kenneth Reed

    2009-01-01

    The Mine Improvement and New Emergency Response (MINER) Act of 2006 was enacted in response to several coal mining accidents that occurred in the beginning of 2006. The MINER Act does not just require underground mines to integrate wireless communication and tracking systems, but aims to overall enhance health and safety in mining at both surface and underground operations. In 2006, the underground communication technologies available to the mining industry had inherent problems that limited ...

  9. Application of stable isotopes to hydrogeology in coal mine

    International Nuclear Information System (INIS)

    Duan Qi; Duan Yucheng

    1988-01-01

    Stable isotopes including Oxygen-18 and Deuterium have been applied to investigation of hydrogeology in main coal mines. By determination of stable isotopic composition of hydrogen and oxygen together with water analysis, the following studies have been developed: Identification of the hydrogeochemical characteristics of the groundwater from varied aquifers; Analysis of the hydraulic relationship between varied aquifers; Interpretation of the probable recharge source of mine water. The research results mentioned above reveal that: 1. The groundwater from main aquifers at coal mines in north China is of meteoric origin, which is recharged from hilly area surrounding the coal mine. Its isotopic composition differs slightly from that of the local precipitation. 2. There is a mutual hydraulic relationship between the Ordovician and Quarternary aquifers, so the difference of isotopic composition is very small. 3. By way of the variation of isotopic composition of groundwater from coal-bearing strata, we can infer the hydraulic relationship extent between overlaid alluvial layer and underlaid Ordovician limestone. (author). 9 refs, 6 figs, 8 tabs

  10. Characterization and effectiveness of remining abandoned coal mines in Pennsylvania

    International Nuclear Information System (INIS)

    Hawkins, J.W.

    1995-01-01

    Under an approved remining program, mine operators can remine abandoned coal mines without assuming legal responsibility for treatment of the previously degraded water, as long as the discharging waters are not further degraded and other regulatory requirements are satisfied. A US Bureau of Mines review of 105 remining permits in Pennsylvania indicates that remining results in substantial reclamation of abandoned mine lands, utilization of significant quantities of coal, and reduction of contaminant loads (acidity and iron) from degraded mine drainage discharges. Normality tests performed on the water quality and flow data indicate generally nonnormal distributions and extreme right-skewness tending toward lower values. The water quality of underground coal mines was observed to be more highly degraded in terms of acidity, iron, and sulfate than that of surface coal mines. The optimum baseline sampling scenario is 12 months in duration at a frequency of one sample per month. Analysis of water quality and flow rates before and after remining indicates that a majority of the mines exhibited either no change or a significant decrease in pollution rate because of remining. The discharge flow rate was the dominant controlling factor when the post-remining contaminant load was significantly better or worse than the baseline (pre-mining) load

  11. Using coal mine saline water to produce chlorine

    Energy Technology Data Exchange (ETDEWEB)

    Gnot, W; Turek, M; Walburg, Z

    1979-01-01

    Utilizing hard coal mine waters with salt concentration reaching 140 kg/mat3 in the chemical industry would significantly reduce the cost of protecting the natural environment from salt. The Institute of Chemistry and Inorganic Technology of the Silesian Technical University in Gliwice developed an efficient technology of producing chorine from underground black coal mine waters. A scheme of the technology is explained: double stage brine purification with magnesium hydroxide as by-product. During the first stage magnesium is precipitated using sodium hydroxide; after increasing salt content in the brine calcium and a low percentage of magnesium are removed by lye-sodium method. During the second stage sedimentation rate increases to 1.4 mm/s, and volume of sludge is only 1%. Magnesium hydroxide is removed using a method patented in Poland (after adding a flocculant magnesium hydroxide is left untouched). Only at a later stage does sedimentation occur. The proposed technology of utilizing mine water will be tested in an experimental plant which will be built at the Ziemowit black coal mine. (7 refs.) (In Polish)

  12. Phytoremediation of coal mine spoil dump through integrated biotechnological approach

    Energy Technology Data Exchange (ETDEWEB)

    Juwarkar, A.A.; Jambhulkar, H.P. [National Environmental Engineering Research Institute, Nagpur (India)

    2008-07-15

    Field experiment was conducted on mine spoil dump on an area of 10 ha, to restore the fertility and productivity of the coal mine spoil dump using integrated biotechnological approach. The approach involves use of effluent treatment plant sludge (ETP sludge), as an organic amendment, biofertilizers and mycorrihzal fungi along with suitable plant species. The results of the study indicated that amendment with effluent treatment plant sludge (ETP sludge), at 50 ton/ha improved the physico-chemical properties of coal mine spoil. Due to biofertilizer inoculation different microbial groups such as Rhizobium, Azotobacter and VAM spores, which were practically absent in mine spoil improved greatly. Inoculation of biofertilizer and application of ETP sludge helped in reducing the toxicity of heavy metals such as chromium, zinc, copper, iron, manganese lead, nickel and cadmium, which were significantly reduced to 41%, 43%, 37%, 37%, 34%, 39%, 37% and 40%, respectively, due to the increased organic matter content in the ETP sludge and its alkaline pH (8.10-8.28), at which the metals gets immobilized and translocation of metals is arrested. Thus, amendment and biofertilizer application provided better supportive material for anchorage and growth of the plant on coal mine spoil dump.

  13. 78 FR 6133 - Agency Information Collection Activities; Submission for OMB Review; Comment Request; Fire...

    Science.gov (United States)

    2013-01-29

    ... for OMB Review; Comment Request; Fire Protection in Underground Coal Mines ACTION: Notice. SUMMARY... information collection request (ICR) revision titled, ``Fire Protection in Underground Coal Mines,'' to the... sections of part 75 require fire drills to be conducted quarterly, equipment to be tested, and a record to...

  14. Performance of shelter in coal mines agains smoke problems. Konai taihisho no kemuri ni taisuru seino

    Energy Technology Data Exchange (ETDEWEB)

    Uchida, S.; Shikada, N.; Tanaka, M.; Kinoshita, M. (Coal Mine Safety Research Center, Kyushu, Fukuoka (Japan))

    1991-10-25

    Relation between a coal mine shelter and smoke was discussed. An enclosing method using combination of ceder boards and vinyl curtains affect greatly the amount of leaking air and the smoke entrance because of tightness of the vinyl curtains changing with temperatures and time. Rope curtains and air curtains show very little effect of preventing smoke from coming in. Upper levels in a shelter restrict the range of sight and have carbon monoxide in higher concentration, whereby people in the shelter are required to take a low posture. It is possible to block smoke and carbon monoxide from coming into a shelter at fire by means of keeping the shelter supplied with certain amount of pressurized air. The time required for smoke to enter a shelter is as relatively short as about 5 to 6 minutes, but 40 minutes or longer is required to discharge it, hence a shelter must be so devised that smoke can never enter it. 3 refs., 14 figs.

  15. Protective and control relays as coal-mine power-supply ACS subsystem

    Science.gov (United States)

    Kostin, V. N.; Minakova, T. E.

    2017-10-01

    The paper presents instantaneous selective short-circuit protection for the cabling of the underground part of a coal mine and central control algorithms as a Coal-Mine Power-Supply ACS Subsystem. In order to improve the reliability of electricity supply and reduce the mining equipment down-time, a dual channel relay protection and central control system is proposed as a subsystem of the coal-mine power-supply automated control system (PS ACS).

  16. Participatory Communication and Sustainability Development: Case Study of Coal Mining Environment in East Kalimantan, Indonesia

    Directory of Open Access Journals (Sweden)

    Inda Fitryarini

    2018-03-01

    Full Text Available This essay tries to analyze about participatory communication, especially those currently practiced in coal mining communities in Samarinda, East Kalimantan Province, Indonesia. In addition, specific practices to facilitate participatory communication are identified and discussed. This essay is based on the author's research on environmental conflicts in coal mining areas. The conclusion of this essay is that community participatory communication in coal mining industry area is still at a pseudo participatory stage.

  17. Study on Load-displacement Test of Rubber Pads of Coal Mine Roadway Constructed by Shield

    Science.gov (United States)

    Yang, Yue; Chen, Xiaoguo; Yang, Liyun

    2017-12-01

    Shield method construction of coal mine roadway is the future trend of the development of deep coal mining. The main shaft supporting is the segment. There is rubber pads between segment and segment. The performance of compression deformation of rubber pad is essential for the overall stability of lining. Through load test, displacement of the rubber pad under load, the thrust force law of the rubber pad deformation, and provide a theoretical basis for the stability analysis of coal mine tunnel shield construction.

  18. Accuracy criteria recommended for the certification of gravimetric coal-mine-dust samplers

    International Nuclear Information System (INIS)

    Bowman, J.D.; Bartley, D.L.; Breuer, G.M.; Doemeny, L.J.; Murdock, D.J.

    1984-07-01

    Procedures for testing bias and precision of gravimetric coal-mine-dust sampling units are reviewed. Performance criteria for NIOSH certification of personal coal-mine dust samplers are considered. The NIOSH criterion is an accuracy of 25% at the 95% confidence interval. Size distributions of coal-mine-dust are discussed. Methods for determining size distributions are described. Sampling and sizing methods are considered. Cyclone parameter estimation is discussed. Bias computations for general sampling units are noted. Recommended procedures for evaluating bias and precision of gravimetric coal mine dust personal samplers are given. The authors conclude that when cyclones are operated at lower rates, the NIOSH accuracy criteria can be met

  19. Research on Occupational Safety, Health Management and Risk Control Technology in Coal Mines.

    Science.gov (United States)

    Zhou, Lu-Jie; Cao, Qing-Gui; Yu, Kai; Wang, Lin-Lin; Wang, Hai-Bin

    2018-04-26

    This paper studies the occupational safety and health management methods as well as risk control technology associated with the coal mining industry, including daily management of occupational safety and health, identification and assessment of risks, early warning and dynamic monitoring of risks, etc.; also, a B/S mode software (Geting Coal Mine, Jining, Shandong, China), i.e., Coal Mine Occupational Safety and Health Management and Risk Control System, is developed to attain the aforementioned objectives, namely promoting the coal mine occupational safety and health management based on early warning and dynamic monitoring of risks. Furthermore, the practical effectiveness and the associated pattern for applying this software package to coal mining is analyzed. The study indicates that the presently developed coal mine occupational safety and health management and risk control technology and the associated software can support the occupational safety and health management efforts in coal mines in a standardized and effective manner. It can also control the accident risks scientifically and effectively; its effective implementation can further improve the coal mine occupational safety and health management mechanism, and further enhance the risk management approaches. Besides, its implementation indicates that the occupational safety and health management and risk control technology has been established based on a benign cycle involving dynamic feedback and scientific development, which can provide a reliable assurance to the safe operation of coal mines.

  20. The future of brown coal mining in Germany. Lectures

    International Nuclear Information System (INIS)

    Boecker, D.; Steinbach, W.C.

    1992-01-01

    Like most other sectors, the German brown coal mining industry is facing new challenges with the unification process. Major problems are also raised by the supply network, another dramatic GDR legacy - namely the need to recultivate the mining-devasted areas. Ideas to overcome such problems are shown by Dr.-Ing. Dietrich Boecker (board member of Rheinbau Ltd.) and the Leipzig government president, Mr. Walter Christian Steinbach, in the realm of an organised politics and science discussion on October 6, 1992. (HS). 6 figs [de

  1. Testing the electrostatic characteristics of polypropylene fabric with metallic yarns, intended for use in coal mines threatened by the explosion hazard. Part 2: Tests in coal mine

    International Nuclear Information System (INIS)

    Talarek, M; Orzech, L

    2011-01-01

    The aim of this paper was to assess the electrostatic safety of polypropylene fabric with metallic yarns intended for use in coal mines. Such fabrics have not been used in the Polish mining industry yet. The tests conducted have been divided into two subgroups: laboratory tests and tests in a coal mine. This paper presents the results of tests in a coal mine, where we have focused on the resistance-to-ground in some specific situations. Bags made of fabric at the roadway face were tested, as well as the roll of fabric during transport and carried by a miner. The results obtained allow the reliable assessment of the risk of using fabrics with metallic yarns in the explosive atmosphere which often occurs in coal mines.

  2. 20 CFR 726.1 - Statutory insurance requirements for coal mine operators.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false Statutory insurance requirements for coal mine operators. 726.1 Section 726.1 Employees' Benefits EMPLOYMENT STANDARDS ADMINISTRATION, DEPARTMENT OF LABOR FEDERAL COAL MINE HEALTH AND SAFETY ACT OF 1969, AS AMENDED BLACK LUNG BENEFITS...

  3. 20 CFR 726.203 - Federal Coal Mine Health and Safety Act endorsement.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false Federal Coal Mine Health and Safety Act endorsement. 726.203 Section 726.203 Employees' Benefits EMPLOYMENT STANDARDS ADMINISTRATION, DEPARTMENT OF LABOR FEDERAL COAL MINE HEALTH AND SAFETY ACT OF 1969, AS AMENDED BLACK LUNG BENEFITS; REQUIREMENTS FOR...

  4. Assessing the Impact of Removing Select Materials from Coal Mine Overburden, Central Appalachia Region, USA

    Science.gov (United States)

    The exposure of readily soluble components of overburden materials from surface coal mining to air and water results in mineral oxidation and carbonate mineral dissolution, thus increasing coal mine water conductivity. A conductivity benchmark of 300 µS/cm for mine water dischar...

  5. 26 CFR 1.187-1 - Amortization of certain coal mine safety equipment.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 3 2010-04-01 2010-04-01 false Amortization of certain coal mine safety... (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES Itemized Deductions for Individuals and Corporations (continued) § 1.187-1 Amortization of certain coal mine safety equipment. (a) Allowance of deduction—(1) In...

  6. Coal mining situation in the Federal Republic of Germany. 1st half of 2015

    International Nuclear Information System (INIS)

    2015-01-01

    The report on coal mining in Germany contains statistical data on the following issues: (a) Hard coal mining: part 1: production, resources, performance, employees; part 2: marketing and foreign commerce. (b) brown coal: part 1: production, resources, performance, employees; part II: marketing in domestic and foreign commerce.

  7. Coal mining situation in the Federal Republic of Germany. January to September 2017

    International Nuclear Information System (INIS)

    2017-01-01

    This publication presents statistical data on hard coal mining (production, stocks, performance per miner and shift, headcount, sales, foreign sales, imports) as well as brown coal mining (production, refining, headcount, domestic sales, imports) in Germany during the period from January through September 2017.

  8. 30 CFR 74.5 - Tests of coal mine dust personal sampler units.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Tests of coal mine dust personal sampler units... Personal Sampler Unit § 74.5 Tests of coal mine dust personal sampler units. (a) The National Institute for... tests and evaluations to determine whether the pump unit of a CMDPSU that is submitted for approval...

  9. Mathematical model for water quality impact assessment and its computer application in coal mine water

    International Nuclear Information System (INIS)

    Sundararajan, M.; Chakraborty, M.K.; Gupta, J.P.; Saxena, N.C.; Dhar, B.B.

    1994-01-01

    This paper presents a mathematical model to assess the Water Quality Impact in coal mine or in river system by accurate and rational method. Algorithm, flowchart and computer programme have been developed upon this model to assess the quality of coal mine water. 3 refs., 2 figs., 2 tabs

  10. 76 FR 63238 - Proximity Detection Systems for Continuous Mining Machines in Underground Coal Mines

    Science.gov (United States)

    2011-10-12

    ... Detection Systems for Continuous Mining Machines in Underground Coal Mines AGENCY: Mine Safety and Health... Agency's proposed rule addressing Proximity Detection Systems for Continuous Mining Machines in... proposed rule for Proximity Detection Systems on Continuous Mining Machines in Underground Coal Mines. Due...

  11. 76 FR 54163 - Proximity Detection Systems for Continuous Mining Machines in Underground Coal Mines

    Science.gov (United States)

    2011-08-31

    ... Detection Systems for Continuous Mining Machines in Underground Coal Mines AGENCY: Mine Safety and Health... (except full-face continuous mining machines) with proximity detection systems. Miners working near..., each underground coal mine operator would be required to install proximity detection systems on...

  12. 30 CFR 942.761 - Areas designated unsuitable for surface coal mining by act of Congress.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Areas designated unsuitable for surface coal mining by act of Congress. 942.761 Section 942.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... Congress. Part 761 of this chapter, Areas Designated by Act of Congress, shall apply to surface coal mining...

  13. 30 CFR 903.761 - Areas designated unsuitable for surface coal mining by act of Congress.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Areas designated unsuitable for surface coal mining by act of Congress. 903.761 Section 903.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... Congress. Part 761 of this chapter, Areas Designated by Act of Congress, applies to surface coal mining...

  14. 30 CFR 933.761 - Areas designated unsuitable for surface coal mining by Act of Congress.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Areas designated unsuitable for surface coal mining by Act of Congress. 933.761 Section 933.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... Congress. Part 761 of this chapter, Areas Designated Unsuitable for Coal Mining by Act of Congress, with...

  15. 30 CFR 910.761 - Areas designated unsuitable for surface coal mining by Act of Congress.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Areas designated unsuitable for surface coal mining by Act of Congress. 910.761 Section 910.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... Congress. Part 761 of this chapter, Areas Designated by Act of Congress, shall apply to surface coal mining...

  16. 30 CFR 937.761 - Areas designated unsuitable for surface coal mining by Act of Congress.

    Science.gov (United States)

    2010-07-01

    ... mining by Act of Congress. 937.761 Section 937.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... WITHIN EACH STATE OREGON § 937.761 Areas designated unsuitable for surface coal mining by Act of Congress. Part 761 of this chapter, Areas Designated by Act of Congress, shall apply to surface coal mining and...

  17. 30 CFR 921.761 - Areas designated unsuitable for surface coal mining by Act of Congress.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Areas designated unsuitable for surface coal mining by Act of Congress. 921.761 Section 921.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... Congress. Part 761 of this chapter, Areas Designated by Act of Congress, shall apply to surface coal mining...

  18. 30 CFR 912.761 - Areas designated unsuitable for surface coal mining by act of Congress.

    Science.gov (United States)

    2010-07-01

    ... mining by act of Congress. 912.761 Section 912.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... WITHIN EACH STATE IDAHO § 912.761 Areas designated unsuitable for surface coal mining by act of Congress. Part 761 of this chapter, Areas Designated by Act of Congress, shall apply to surface coal mining and...

  19. 30 CFR 947.761 - Areas designated unsuitable for surface coal mining by act of Congress.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Areas designated unsuitable for surface coal mining by act of Congress. 947.761 Section 947.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... Congress. Part 761 of this chapter, Areas Designated by Act of Congress, shall apply to surface coal mining...

  20. 30 CFR 939.761 - Areas designated unsuitable for surface coal mining by Act of Congress.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Areas designated unsuitable for surface coal mining by Act of Congress. 939.761 Section 939.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... Congress. Part 761 of this chapter, Areas Designated by Act of Congress, shall apply to surface coal mining...

  1. 30 CFR 941.761 - Areas designated unsuitable for surface coal mining by act of Congress.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Areas designated unsuitable for surface coal mining by act of Congress. 941.761 Section 941.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... Congress. Part 761 of this chapter, Areas Designated by Act of Congress, shall apply to surface coal mining...

  2. 30 CFR 922.761 - Areas designated unsuitable for surface coal mining by act of Congress.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Areas designated unsuitable for surface coal mining by act of Congress. 922.761 Section 922.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... Congress. Part 761 of this chapter, Areas Designated by Act of Congress, shall apply to surface coal mining...

  3. 30 CFR 905.761 - Areas designated unsuitable for surface coal mining by act of Congress.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Areas designated unsuitable for surface coal mining by act of Congress. 905.761 Section 905.761 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION... Congress. Part 761 of this chapter, Areas Designated by Act of Congress, shall apply to surface coal mining...

  4. Conversion of coal mining regions of France. La reconversion de la mineria del carbon en Francia

    Energy Technology Data Exchange (ETDEWEB)

    Torres, A.

    1990-08-01

    This programme of drastic reduction in coal mining in France has been made possible by the Economic Conversion Plan for the Coalfields. The Plan takes account of all areas of work affected by the reduction in coal mining and will assist in maintaining or even increase economic activity in the areas involved.

  5. 78 FR 25308 - Proposed Collection; Comment Request; Coal Mine Dust Sampling Devices

    Science.gov (United States)

    2013-04-30

    ...; Coal Mine Dust Sampling Devices AGENCY: Mine Safety and Health Administration, Labor. ACTION: 60-Day... mines. CPDMs must be designed and constructed for coal miners to wear and operate without impeding their... related to Coal Mine Dust Sampling Devices. MSHA is particularly interested in comments that: Evaluate...

  6. Electrical - light current remote monitoring, control and automation. [Coal mine, United Kingdom

    Energy Technology Data Exchange (ETDEWEB)

    Collingwood, C H

    1981-06-01

    A brief discussion is given of the application of control monitoring and automation techniques to coal mining in the United Kingdom, especially of the use of microprocessors, for the purpose of enhancing safety and productivity. Lighting systems for the coal mine is similarly discussed.

  7. 77 FR 26046 - Proposed Extension of Existing Information Collection; Ground Control for Surface Coal Mines and...

    Science.gov (United States)

    2012-05-02

    ... Extension of Existing Information Collection; Ground Control for Surface Coal Mines and Surface Work Areas of Underground Coal Mines AGENCY: Mine Safety and Health Administration, Labor. ACTION: Request for... inspections and investigations in coal or other mines shall be made each year for the purposes of, among other...

  8. 75 FR 63864 - Division of Coal Mine Workers' Compensation; Proposed Extension of Existing Collection; Comment...

    Science.gov (United States)

    2010-10-18

    ... DEPARTMENT OF LABOR Office of Workers' Compensation Programs Division of Coal Mine Workers... comments concerning the proposed collection: Comparability of Current Work to Coal Mine Employment (CM-913... Benefits Act of 1977, as amended, 30 U.S.C. 901 et seq., provides for the payment of benefits to coal...

  9. 78 FR 72717 - Division of Coal Mine Workers' Compensation; Proposed Collection; Comment Request

    Science.gov (United States)

    2013-12-03

    ... DEPARTMENT OF LABOR Office of Workers' Compensation Programs Division of Coal Mine Workers... proposed collection: Comparability of Current Work to Coal Mine Employment (CM-913). A copy of the proposed...., provides for the payment of benefits to coal miners who are totally disabled by black lung disease arising...

  10. 76 FR 70075 - Proximity Detection Systems for Continuous Mining Machines in Underground Coal Mines

    Science.gov (United States)

    2011-11-10

    ... Detection Systems for Continuous Mining Machines in Underground Coal Mines AGENCY: Mine Safety and Health... proposed rule addressing Proximity Detection Systems for Continuous Mining Machines in Underground Coal... Detection Systems for Continuous Mining Machines in Underground Coal Mines. MSHA conducted hearings on...

  11. Environmental evaluation for sustainable development of coal mining in Qijiang, Western China

    Energy Technology Data Exchange (ETDEWEB)

    Si, Hu; Bi, Haipu [College of Resource and Environment Science, Chongqing University, Chongqing 400030 (China); Key Lab for the Exploitation of Southwestern Resource and the Environment Disaster Control Engineering, the Ministry of Education, Chongqing University, Chongqing 400030 (China); Li, Xiaohong; Yang, Chunhe [Key Lab for the Exploitation of Southwestern Resource and the Environment Disaster Control Engineering, the Ministry of Education, Chongqing University, Chongqing 400030 (China)

    2010-03-01

    Environmental degradation associated with mining activities may seriously threaten the health of local people and the sustainable development of coal mining, which may need to be addressed by improved environmental evaluation system. Based on analyzing environmental pollution from coal mining and the increasing need for raw coal, this paper establishes an environmental evaluation system, covering environmental situation, resource protection and economic benefit, for sustainable development in coal mining. This paper proposes methods for calculating the weight of each index and the environmental sustainable capability taking into account the method of Analytic Hierarchy Process (AHP). Finally, the index system is used to evaluate the environmental sustainability of coal mining in the Qijiang area, Western China, which has demonstrated the validity of the index system. It may also be useful as a tool to assess the environmental impact of mining areas, as well as a measure to promote sustainable development in coal mining. (author)

  12. Costs of abandoned coal mine reclamation and associated recreation benefits in Ohio.

    Science.gov (United States)

    Mishra, Shruti K; Hitzhusen, Frederick J; Sohngen, Brent L; Guldmann, Jean-Michel

    2012-06-15

    Two hundred years of coal mining in Ohio have degraded land and water resources, imposing social costs on its citizens. An interdisciplinary approach employing hydrology, geographic information systems, and a recreation visitation function model, is used to estimate the damages from upstream coal mining to lakes in Ohio. The estimated recreational damages to five of the coal-mining-impacted lakes, using dissolved sulfate as coal-mining-impact indicator, amount to $21 Million per year. Post-reclamation recreational benefits from reducing sulfate concentrations by 6.5% and 15% in the five impacted lakes were estimated to range from $1.89 to $4.92 Million per year, with a net present value ranging from $14.56 Million to $37.79 Million. A benefit costs analysis (BCA) of recreational benefits and coal mine reclamation costs provides some evidence for potential Pareto improvement by investing limited resources in reclamation projects. Copyright © 2012 Elsevier Ltd. All rights reserved.

  13. Study on coal mine macro, meso and micro safety management system

    Directory of Open Access Journals (Sweden)

    Longkang Wang

    2016-03-01

    Full Text Available In recent years, the coal mine safety production situation in our country improved year by year, but severe accidents still occurred; the accidents caused great economic loss to the national economy. According to statistical analysis, almost all of the coal mine accidents will expose the hidden danger in before, most of the accidents caused due to safety management not reaching the designated position and the hidden danger management does not take any decision in time. Based on the coal mine safety management holes in our country, the coal mine macro, meso and micro safety management system was established in this paper, which includes meaning and conception of the theories of the macro, meso and micro safety management, and also includes the matching hardware equipment, in order to achieve the hidden danger's closed-loop control and dynamic early warning in the process of coal mine production.

  14. Regional technological change in US coal mines: 1951-76

    Energy Technology Data Exchange (ETDEWEB)

    Lakhani, H A

    1982-04-01

    This paper analyses technological change in coal mines in five regions - the Northern and Southern Appalachians, the Rocky Mountains, the Interior and Gulf and Northern Great Plains. Section 2 deals with changes in production profiles, over time, of the regions by dividing coal mines into underground and surface mines. It concludes that the Appalachian regions are the declining regions with lower labour productivity and that the Northern Great Plains, with its increasing labour productivity, is the expanding region. Section 3 presents a methodology of S-shaped growth curves. Section 4 reports empirical results for growth rates of adoption of the newer techniques across regions. These results reveal that the Northern Great Plains region is not absorbing the manpower and resources released by the Appalachian regions so that there are shortages in the former in the face of unemployment in the latter. There is, therefore, an opportunity for the declining Appalachian regions to inform their surplus manpower and resources about the growth centre in the north and prepare them for relocation, retraining and readjustment to the changes. (11 refs.)

  15. AN OPERATIONAL MANAGEMENT MODEL FOR A COAL MINING PRODUCTION UNIT

    Directory of Open Access Journals (Sweden)

    R. Visser

    2012-01-01

    Full Text Available

    ENGLISH ABSTRACT: The coal mining industry faces increased pressure for higher quality coal at lower cost and increased volumes. To satisfy these requirements the industry needs technically skilled first line supervisors with operational management skills. Most first line supervisors possess the necessary technical, but not the required operational management skills. Various operational management philosophies, describing world-class operational management practices exist; however, it is not possible to implement these philosophies as-is in a mining environment due to the various differences between manufacturing and mining. The solution is to provide an operational management model, adapted from these philosophies, to first line supervisors in the coal mining industry.

    AFRIKAANSE OPSOMMING: Die steenkoolmynbedryf ervaar groeiende druk van die mark vir hoër gehalte steenkool, laer koste en verhoogde volumes. Om hierdie behoefte te bevredig benodig die myn tegniesgeskoolde eerstelyntoesighouers met bedryfsbestuursvaardighede. Ongelukkig beskik die meeste toesighouers wel oor die nodige tegniese kennis, maar nie die nodige bedryfsbestuursvaardighede nie. Daar bestaan verskeie bedryfsbestuursfilosofieë wat wêreldklas bedryfsbestuurspraktyke omskryf. Dit is egter nie moontlik om die filisofieë net so in die mynbedryf te implimenteer nie a.g.v. die verskille tussen vervaardiging en mynbou. Die oplossing is om ‘n bedryfsbestuurmodel wat op hierdie filosofieë geskoei is, aan eerstelyntoesighouers in die steenkoolbedryf te verskaf.

  16. Working group report: methane emissions from coal mining

    International Nuclear Information System (INIS)

    Kruger, D.

    1993-01-01

    The process of coalification inherently generates methane and other byproducts. The amount of methane released during coal mining is a function of coal rank and depth, gas content, and mining methods, as well as other factors such as moisture. In most underground mines, methane is removed by drawing large quantities of air through the mine releasing the air into the atmosphere. In surface mines, exposed coal faces and surfaces, as well as areas of coal rubble created by blasting operations are believed to be the major sources of methane. A portion of the methane emitted from coal mining comes from post-mining activities such as coal processing, transportation, and utilisation. Some methane is also released from coal waste piles and abandoned mines. This paper highlights difficulties with previous methane emission studies namely: absence of data on which to base estimates; use of national data to develop global estimates; failure to include all possible emission sources; overreliance on statistical estimation methodologies. It recommends a 'tiered' approach for the estimation of emissions from underground mines, surface mines and post-mining activities. For each source, two or more approaches (or 'tiers') are presented, with the first tier requiring basic and readily available data and higher tiers requiring additional data. 29 refs., 3 tabs

  17. An intelligent hybrid system for surface coal mine safety analysis

    Energy Technology Data Exchange (ETDEWEB)

    Lilic, N.; Obradovic, I.; Cvjetic, A. [University of Belgrade, Belgrade (Serbia)

    2010-06-15

    Analysis of safety in surface coal mines represents a very complex process. Published studies on mine safety analysis are usually based on research related to accidents statistics and hazard identification with risk assessment within the mining industry. Discussion in this paper is focused on the application of AI methods in the analysis of safety in mining environment. Complexity of the subject matter requires a high level of expert knowledge and great experience. The solution was found in the creation of a hybrid system PROTECTOR, whose knowledge base represents a formalization of the expert knowledge in the mine safety field. The main goal of the system is the estimation of mining environment as one of the significant components of general safety state in a mine. This global goal is subdivided into a hierarchical structure of subgoals where each subgoal can be viewed as the estimation of a set of parameters (gas, dust, climate, noise, vibration, illumination, geotechnical hazard) which determine the general mine safety state and category of hazard in mining environment. Both the hybrid nature of the system and the possibilities it offers are illustrated through a case study using field data related to an existing Serbian surface coal mine.

  18. Tannery and coal mining waste disposal on soil

    Energy Technology Data Exchange (ETDEWEB)

    Kray, C.H.; Tedesco, M.J.; Bissani, C.A.; Gianello, C.; da Silva, K.J. [CEFET BG, Goncalves (Brazil)

    2008-11-15

    Tannery residues and coal mine waste are heavily polluting sources in Brazil, mainly in the Southern States of Rio Grande do Sul and Santa Catarina. In order to study the effects of residues of chrome leather tanning (sludge and leather shavings) and coal waste on soybean and maize crops, a field experiment is in progress since 1996, at the Federal University of Rio Grande do Sul Experimental Station, county of Eldorado do Sul, Brazil. The residues were applied twice (growing seasons 1996/97 and 1999/00). The amounts of tannery residues were applied according to their neutralizing value, at rates of up to 86.8 t ha{sup -1}, supplying from 671 to 1.342 kg ha{sup -1} Cr(III); coal waste was applied at a total rate of 164 t ha{sup -1}. Crop yield and dry matter production were evaluated, as well as the nutrients (N, P, K, Ca, Mg, Cu and Zn) and Cr contents. Crop yields with tannery sludge application were similar to those obtained with N and lime supplied with mineral amendments. Plant Cr absorption did not increase significantly with the residue application. Tannery sludge can be used also to neutralize the high acidity developed in the soil by coal mine waste.

  19. Dust collection capacity of plants growing in coal mining areas

    International Nuclear Information System (INIS)

    Maiti, S.K.

    1993-01-01

    Plant can act as living filter of dust pollution in coal mining areas, where the amount of suspended particulate matter and dust fall rate is very high. Therefore, plant species growing in coal mining areas are classified as evergreen or deciduous with simple and compound leaf basis. The dust arresting capacity of each leaf is measured and expressed in g/m 2 . The study indicated that evergreen plants with simple, pilose surface, like - Alstonia, Ficus cunea, F. benghalensis and Mangifera indica are good dust catcher than evergreen compound leaves of Cassia siamea, Acacia arabica and Leucaena leucocephala. Deciduous with simple leaves, such as Zizyphus mauritiana, F. religiosa, Psidium guyava are also good dust collectors. Suitable plant species also help in quick reclamation of mined out areas; one practical difficulty for establishment of trees as green belts or reclamation purpose, has been incidence of cattle grazing. This study suggested a systematic way of selecting plant species on the basis of their efficiency in dust control and resistance to cattle grazing. (author). 16 refs., 3 tabs

  20. High radon exposure in a Brazilian underground coal mine

    International Nuclear Information System (INIS)

    Veiga, L H S; Melo, V; Koifman, S; Amaral, E C S

    2004-01-01

    The main source of radiation exposure in most underground mining operations is radon and radon decay products. The situation of radon exposure in underground mining in Brazil is still unknown, since there has been no national regulation regarding this exposure. A preliminary radiological survey in non-uranium mines in Brazil indicated that an underground coal mine in the south of Brazil had high radon concentration and needed to be better evaluated. This paper intends to present an assessment of radon and radon decay product exposure in the underground environment of this coal mining industry and to estimate the annual exposure to the workers. As a product of this assessment, it was found that average radon concentrations at all sampling campaign and excavation sites were above the action level range for workplaces of 500-1500 Bq m -3 recommended by the International Commission on Radiological Protection-ICRP 65. The average effective dose estimated for the workers was almost 30 times higher than the world average dose for coal miners

  1. Reclamation of coal mine spoil dump through integrated biotechnological approach

    International Nuclear Information System (INIS)

    Juwarkar, A.S.; Thawale, P.R.; Mowade, S.; Shrivastava, S.; Deshbhratar, P.B.; Juwarkar, A.

    1994-01-01

    Laboratory and field studies were carried out to restore the fertility and productivity of coal mine spoil using primary clarifier sludge from paper mill effluent treatment plant and use of specialised culture of biofertilizers and mycorrhizal fungi. Plants namely Tectona grandis, Delbergia sissoo, Gmelina arporea, Emblica officinalis and Cassia seamea were grown. Sludge amendment enhanced the survival rate of plants to 80% compared to 20% in unamended spoil. Plants grown on unamended spoil showed stunted growth. Growth of plants increased by 188-484% when sludge was applied at the rate of 100 tonnes per hectare. At 100 tones per hectare sludge amendment, biofertilizer and mycorrhizae treatment there were 83.7 nodules in shishum as against only 4.6 nodules in case of spoil alone. Further root length was 276% and 281% more respectively in case of shishum and teak. Inoculation of plant saplings with respective biofertilizers and mycorrhizae further increased the plant growth by 144-198%. At Durgapur coal mine, 56,000 saplings of Tectona grandis, Gmelina arporea, Delbergia sissoo, Emblica officinalis, Azadirachta indica, Acacia ariculiformis, Prosopis etc were successfully planted on spoil dump using integrated biotechnological approach. 10 refs., 5 tabs

  2. Presentations from the 1992 Coal Mining Impoundment Informational Meeting

    Energy Technology Data Exchange (ETDEWEB)

    1993-12-31

    On May 20 and 21, 1992, the MSHA Coal Mining Impoundment Informational Meeting was held at the National Mine Health and Safety Academy in Beckley, West Virginia. Fifteen presentations were given on key issues involved in the design and construction of dams associated with coal mining. The attendees were told that to improve the consistency among the plan reviewers, engineers from the Denver and Pittsburgh Technical Support Centers meet twice annually to discuss specific technical issues. It was soon discovered that the topics being discussed needed to be shared with anyone involved with coal waste dam design, construction, or inspection. The only way to accomplish that goal was through the issuance of Procedure Instruction Letters. The Letters present a consensus of engineering philosophy that could change over time. They do not present policy or carry the force of law. Currently, thirteen position papers have been disseminated and more will follow as the need arises. The individual paper were not even entered into the database.

  3. Terrestrial carbon losses from mountaintop coal mining offset regional forest carbon sequestration in the 21st century

    International Nuclear Information System (INIS)

    Elliott Campbell, J; Fox, James F; Acton, Peter M

    2012-01-01

    Studies that quantify the spatial and temporal variability of carbon sources and sinks provide process-level information for the prediction of future levels of atmospheric carbon dioxide as well as verification of current emission agreements. Assessments of carbon sources and sinks for North America that compare top-down atmospheric constraints with bottom-up inventories find particularly large carbon sinks in the southeastern US. However, this southeastern US sink may be impacted by extreme land-use disturbance events due to mountaintop coal mining (MCM). Here we apply ecosystem modeling and field experiment data to quantify the potential impact of future mountaintop coal mining on the carbon budget of the southern Appalachian forest region. For projections based on historical mining rates, grassland reclamation, and the continued regrowth of un-mined forests, we find that the southern Appalachian forests switch from a net carbon sink to a net carbon source by year 2025–33 with a 30%–35% loss in terrestrial carbon stocks relative to a scenario with no future mining by the year 2100. Alternatively, scenarios of forest sequestration due to the effect of CO 2 fertilization result in a 15%–24% loss in terrestrial carbon stocks by the year 2100 for mining scenarios relative to scenarios with no future mining. These results suggest that while power plant stack emissions are the dominant life-cycle stage in coal-fired electricity, accounting for mountaintop coal mining in bottom-up inventories may be a critical component of regional carbon budgets. (letter)

  4. 30 CFR 77.1100 - Fire protection; training and organization.

    Science.gov (United States)

    2010-07-01

    ....1100 Section 77.1100 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR COAL MINE SAFETY AND HEALTH MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF... facilities and equipment shall be provided commensurate with the potential fire hazards at each structure...

  5. Unattached fraction of radon progeny in Polish coal mines

    International Nuclear Information System (INIS)

    Skubacz, K.; Michalik, B.

    2002-01-01

    The system of the monitoring of the radiation hazard in Polish coal mines is based on the monitoring of the workplaces. This system works since 1989 in all coal mines. It gives a very good basis for further epidemiological investigation and assessment of the health detriment within the population of the mines as a result of the exposure for natural radiation. It is very important problem, due to the fact of the presence in the mines another factors, which probably have a synergetic effects on the respiratory tracts. As the routine instrument, a device called ALFA-31 sampling probe was developed in our laboratory. This device was accomplished to regular dust sampler and simultaneous measurements of dust content and potential alpha energy concentration of radon progeny are obligatory in all underground mines in Poland. But the microcyclone used a separator of the respirable fraction which causes the cut-off of unattached fraction of radon progeny, On the other hand measurements of the unattached fraction of short lived radon progeny play a very important role in the investigations of the adequate dose from this source of radiation hazard. During field experiments the use of the alpha spectroscopy system is necessary, while measurements are done not in the vacuum chambers but under normal pressure. It leads to situation, when particular peaks in alpha spectrum are very wide and interfere with other peaks of another alpha-emitting radionuclides. Such instrumentation was designed and completed, and a survey in several underground mines was performed. The analysis of the obtained results must be done very carefully; in other case it may cause a very big uncertainty of the result. In this paper a new approach to the analysis of the alpha spectra has been described. This approach can be used also in other applications of alpha spectroscopy, in which the analysis of energy of alpha peaks in spectrum is needed. The method of the analysis is based on a non-linear regression

  6. An investigation on groundwater recovery rate within sub sea floor tunnels at closed coal mines

    International Nuclear Information System (INIS)

    Nakata, Eiji; Suenaga, Hiroshi; Oyama, Takahiro; Nomura, Tokisada; Ichihara, Yoshihisa

    2008-01-01

    The groundwater recovery rate investigated at the closed coal mines extended within sub sea floor tunnels. The Ikeshima and the Taiheiyo coal mine companies exploited the deep coal-bearing strata beneath the ocean. Ikeshima coal mine, excavated S.L. -650m to 6km offshore from Ikeshima island, was closed at November 2002, and Taiheiyo coal mine, excavated S.L. -720m to 9km offshore from Hokkaido, was stopped to excavate from the deep area at January 2003. After closing and stopping of development, we began the investigation of the groundwater recovery rate at both coal mines. The groundwater level of Ikeshima coal mine raised +405m per 1.8 years at the main shaft. The permeability coefficient estimated between 10 - 8 m /s and 10 -6 m/s to use the water recovery rate at the shaft. Otherwise, at Taiheiyo coal mine, we measured the air pressure in tubes used by 3.5km 2.5km, and 1.5km length 2mm diameters tubes to estimate the groundwater recovery level at the 3.2km offshore plug site. Groundwater didn't reach 4.7km (1.5+3.2km) area until November 2004. There were breakdown of shotcleate and rock mass from the roof of tunnel at 5.3km from offshore line. In this paper, we try to show the groundwater recovery rate of these sub sea floor collieries. (author)

  7. Development of a Universal Safety Behavior Management System for Coal Mine Workers

    Science.gov (United States)

    LI, Jizu; LI, Yuejiao; LIU, Xiaoguang

    2015-01-01

    Background: In China, over 80% of all work-related deaths in the mining industry occur in coal mines and human factors constitute 85% of the direct causes of coal mine accidents, which indicates that significant shortcomings currently exist in the safety behavior management of Chinese coal mine workers. We aimed to verify the impact of human psychological behavior in coal mine accidents systematically through experimental study, theoretical analysis and management application. Methods: Four test instruments (Sensory and cognitive capacity test, Sixteen-Personal Factor Questionnaire, Symptom Checklist 90 Questionnaire and the supervisors’ evaluation) were employed from November 2013 to June 2014 to identify unsafe behavior factors, the self-established Questionnaire of Safety Behavior Norms (QSBN) was also used to propose the safety behavior countermeasures of coal mine employees. Results: The mental health of most coal mine workers’ is relatively poor. The sensory and cognitive capacity of those in different work posts varies greatly, as does the sense of responsibility. Workers are susceptible to external influences, and score low in site management. When the 16-PF and SCL-90 sensory and cognitive assessments were combined, the psychological index predictive power was greatest for estimating sense of efficiency and degree of satisfaction in internal evaluations, while at the same time lowest for estimating control of introversion-extroversion and stress character. Conclusion: The psychological indicators can predict part of employee safety behavior, and assist a coal mine enterprise to recruit staff, develop occupational safety norms and improve the working environment. PMID:26258088

  8. Impact of rent-seeking on productivity in Chinese coal mine safety supervision: A simulation study

    International Nuclear Information System (INIS)

    Chen, Hong; Feng, Qun; Zhu, Dandan; Han, Shuai; Long, Ruyin

    2016-01-01

    During the “golden decade” (2001–2011) of the coal industry in China, rent-seeking increased in coal mine safety supervision alongside significant improvements in coal mine safety status and increased economic benefits in the coal industry. To explore this internal relationship, we developed a Matlab simulation system and simulated the impact of rent-seeking from each level of the supervision department on coal mine productivity in different scenarios. The results showed the following. (1) Rent-seeking had no significant influence on the average level of material productivity but it had an adverse effect on the average level of mental productivity. Due to the effects of rent-seeking, productivity tended to exhibit unstable and destructive fluctuations, and rent-seeking had the dual effect of promoting and restraining productivity in a wide range with a high frequency. (2) In the supervision scenario, supervision by the high-level department was efficient, and productivity was promoted more by the national and provincial supervision department. (3) In the rent-seeking scenario, each level of the department had an intensity threshold above which coal mine accidents occurred. We also propose suggestions that focuses on the improved supervision of Chinese coal mine safety in three areas based on the “new normal” safety concept. - Highlights: •We discussed rent-seeking behavior in Chinese coal mine safety supervision. •We explored the characteristics of coal mine productivity. •We investigated the impact of rent-seeking on coal mine productivity in three scenarios. •We found rent-seeking led to great fluctuations in productivity with a dual effect. •We proposed a model strategy for Chinese coal mine safety supervision in three areas.

  9. Inertisation of sealed coal mine panels using microbial organisms.

    CSIR Research Space (South Africa)

    Creedy, DP

    2000-02-01

    Full Text Available for methane removal 5 3.1 Techniques for applying the microbes 6 3.1.1 Coated roadway surfaces 6 3.1.2 Bio-filters 6 3.1.3 Passive bio-curtain filters 7 3.2 Process sustainability 8 3.3 Treatment configuration 8 3.3.1 Whole area treatment 8 3....3.2 Selected area treatment 8 3.3 Remote gas monitoring 8 4 A practical technology for South African coal mines 9 4.1 The preferred approach 9 4.2 Selection of micro-organisms for immobilisation 9 4.3 Development of the bio-curtain technology 9 4...

  10. Controlled Roof Collapse during Secondary Mining in Coal Mines

    Directory of Open Access Journals (Sweden)

    Ashleigh Hutchinson

    2012-01-01

    Full Text Available The problem considered is an investigation of the possible collapse of the roof between the pillar next to be mined in secondary coal mining and the first line of pillar remnants called snooks. The roof rock between the pillar, which is the working face, and the snook is modelled as an Euler-Bernoulli beam acted on at each end by a horizontal force and by its weight per unit length. The beam is clamped at the pillar and simply supported (hinged at the snook. The dimensionless differential equation for the beam and the boundary conditions depend on one dimensionless number . We consider the range of values of before the displacement and curvature first become singular at =1. The model predicts that for all practical purposes, the beam will break at the clamped end at the pillar. The failure of the beam for values of greater than 1 is investigated computationally.

  11. WORKPLACE AS AN OBJECT OF ACCOUNTING AT COAL MINES

    Directory of Open Access Journals (Sweden)

    Valeriy Nikolaevich Kuletskoy

    2014-10-01

    Full Text Available The paper presents an approach to evaluating the effectiveness of the workplace on the coal-mining enterprise based on an integrated consideration of three aspects: organizational, technological, social, labor, organizational and economic. In accordance with the definition given to aspects of the workplace: as part of the organization of production, the labor process, organizational and economic relations. Shows the structure of the workplace as an object of accounting, including: objective function, the subject of labor, means of labor, the subject of labor.Defined parameters describing the results obtained in the workplace, and the cost of its operation.The experience in the organization poobektnogo accounting efficiency in the use of jobs in the "Cut Tugnuisky."

  12. Landslide rehabilitation with geo synthetics in open coal mine Oslomej

    International Nuclear Information System (INIS)

    Dimitrievski, Ljupcho; Ilievska, Frosina; Ilievski, Darko

    2004-01-01

    In November 2002 stability is violated and landslides are registered in open coal mine Oslomej, Republic of Macedonia. Around the profile IV existing open irrigation channel was interrupted and landslide was extended to the regional way R421 Kicevo - Oslomej. The landslide was classified like big and dangerous, including danger for disruption of the regional road and pipeline Studencica - Oslomej for supplying of thermal power plant Oslomej with technical water. According to the proposed solution, main project design for landslide rehabilitation was prepared with using geo synthetics Stabilenka 200/45. In fill is local soil material which had been placed and compacted in layers, it had formed a composite construction. Stabilenka acts as a reinforcement due to its ability to absorb tensile forces. With the design solution two retaining walls of reinforced soil and complete drainage system of geo composite materials had been constructed This paper deals with details of the design and the construction. (Author)

  13. Productivity Improvement in Underground Coal Mines - A Case Study

    Directory of Open Access Journals (Sweden)

    Devi Prasad Mishra

    2013-01-01

    Full Text Available Improvement of productivity has become an important goal for today's coal industry in the race to increase price competitiveness. The challenge now lying ahead for the coal industry is to identify areas of waste, meet the market price and maintain a healthy profit. The only way to achieve this is to reduce production costs by improving productivity, efficiency and the effectiveness of the equipment. This paper aims to identify the various factors and problems affecting the productivity of underground coal mines adopting the bord and pillar method of mining and to propose suitable measures for improving them. The various key factors affecting productivity, namely the cycle of operations, manpower deployment, machine efficiency, material handling and management of manpower are discussed. In addition, the problem of side discharge loader (SDL cable handling resulting in the wastage of precious manpower resources and SDL breakdown have also been identified and resolved in this paper.

  14. The determination of methane resources from liquidated coal mines

    Science.gov (United States)

    Trenczek, Stanisław

    2017-11-01

    The article refers to methane presented in hard coal seams, which may pose a serious risk to workers, as evidenced by examples of incidents, and may also be a high energy source. That second issue concerns the possibility of obtaining methane from liquidated coal mines. There is discussed the current methodology for determination of methane resources from hard coal deposits. Methods of assessing methane emissions from hard coal deposits are given, including the degree of rock mass fracture, which is affected and not affected by mining. Additional criteria for methane recovery from the methane deposit are discussed by one example (of many types) of methane power generation equipment in the context of the estimation of potential viable resources. Finally, the concept of “methane resource exploitation from coal mine” refers to the potential for exploitation of the resource and the acquisition of methane for business purposes.

  15. Research on water pollution induced by coal mining

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Q.; Dong, D.; Fu, Y.; Bai, X.; Sun, Z. [China University of Mining and Technology, Xuzhou (China). Dept of Resource Exploitation Engineering

    2002-01-01

    Water environment problems induced by mining were studied. Influences of coal mining on runoff of rivers and on water sources were discussed. And the forming mechanism of acid water was analysed. The result shows that the mining activity is gradually changing the co-environment of adjacent areas, especially the water. With the water sources being continually polluted, the underground water has some poisonous or harmful ions in the process of dynamic exchange of water. The falling level of water table results in an increase of depression cone, and the seepage of rivers and the increasing range of acid water have more or less influence on water sources. All these are threatening the normal life of human beings. 11 refs., 2 figs.

  16. Case studies of slope stability radar used in coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Noon, D. [GroundProbe Pty Ltd., South Brisbane, Qld. (Australia)

    2005-07-01

    This paper presents case studies about how the Slope Stability Radar (SSR) system provided adequate warning to safeguard people and equipment prior to highwall and low wall failure at two Australian coal mines. At Drayton mine, the SSR was able to provide the mine with sufficient warning to move the shovel and trucks away from the highwall, while personnel safely watched 50,000 tonnes of bulk material coming down from the wall. At Mt Owen mine, the SSR alarm allowed the mine to evacuate equipment and personnel four hours prior to a 30,000,000 tonne low wall failure. These two case studies demonstrate how the SSR system was able to continuously monitor the stability of these critical slopes, enabling greater mine productivity whilst maintaining the highest quality of safety. 2 refs., 7 figs., 1 tab.

  17. Effects of radiation on coal mine environment -a critical review

    International Nuclear Information System (INIS)

    Singh, A.K.; Varma, N.K.; Sahay, N.; Ahmad, I.

    2001-01-01

    Due to mass-scale industrialization, world's environment is being polluted every day endangering the existence of living beings on the earth. This has attracted the attention of environmental engineers, medical practitioners, planners and researchers throughout the world. Attempts are being made to make air, water and atmosphere clean and to prevent likely hazards arising out of various industrial activities. In addition, the radiation from natural sources is all around us and has been here since time immemorial. Coal miners have small occupational radiation which arise from naturally occurring radioactive substance(s) underground. The predominant source of natural radiation present in coal mines is the radon gas. This paper describes the origin of radon and its radiological hazards. An attempt has been made to review the status of the problem likely to be caused by the different radioactive elements present in Indian coal, coal ash and allied coal-based industries. (author)

  18. Damage to underground coal mines caused by surface blasting

    International Nuclear Information System (INIS)

    Fourie, A.B.; Green, R.W.

    1993-01-01

    An investigation of the potential damage to underground coal workings as a result of surface blasting at an opencast coal mine is described. Seismometers were installed in a worked out area of an underground mine, in the eastern Transvaal region of South Africa, and the vibration caused by nearby surface blasting recorded. These measurements were used to derive peak particle velocities. These velocities were correlated with observed damage underground in order to establish the allowable combination of the two blasting parameters of charge mass per relay, and blast-to-gage point distance. An upper limit of 110mm/sec peak particle velocity was found to be sufficient to ensure that the damage to the particular workings under consideration was minimal. It was further found that a cube-root scaling law provided a better fit to the field data than the common square-root law. 11 refs., 6 figs., 5 tabs

  19. Integrated circuit devices in control systems of coal mining complexes

    Energy Technology Data Exchange (ETDEWEB)

    1983-01-01

    Systems of automatic monitoring and control of coal mining complexes developed in the 1960's used electromagnetic relays, thyristors, and flip-flops on transistors of varying conductivity. The circuits' designers, devoted much attention to ensuring spark safety, lowering power consumption, and raising noise immunity and repairability of functional devices. The fast development of integrated circuitry led to the use of microelectronic components in most devices of mine automation. An analysis of specifications and experimental research into integrated circuits (IMS) shows that the series K 176 IMS components made by CMOS technology best meet mine conditions of operation. The use of IMS devices under mine conditions has demonstrated their high reliability. Further development of integrated circuitry involve using microprocessors and microcomputers. (SC)

  20. Underground coal mining - methods, equipment developments and trends

    Energy Technology Data Exchange (ETDEWEB)

    Singhal, R

    1988-12-01

    Underground mines are truly beginning to accept the so-called 'high tech' technology evident in other industries. Automation, remote control and robotics have taken an added significance. Wireless communication, mine-wide equipment health and performance monitoring, and transmission of data from deeper levels to surface is moving towards becoming the norm. There is emphasis on developing and applying continuous mining systems, as well as on modifying cyclical discontinuous methods to continuous systems. Multi-purpose equipment is also being developed. Technology transfer is playing its role - equipment and systems from surface coal mining are being applied to underground mining and vice-versa. At the American Mining Congress Exhibition held in Chicago in April 1988, a variety of equipment for underground mining was displayed including coal face equipment such as shearer loaders, conveyors and powered supports, and equipment for room-and-pillar coal mining. The trend continues to be towards high power machines equipped with a variety of electronics and sensors, safety devices, and alarm systems. Ancillary equipment on display covered a variety of cutting drums, cutting tools, conveying equipment and so on. In room-and-pillar mining, the overall emphasis was on moving away from the cyclical nature of the work. Transportation by shuttle cars must be replaced by continuous transport systems such as conveyors. Experience from Australia has shown that the application of continuous haulage and breaker line supports has permitted a doubling of production from room-and-pillar systems. Production levels of 3,000tpd have already been achieved, and 4,000tpd is considered achievable.

  1. Selenium transformation in coal mine spoils: Its environmental impact assessment

    Energy Technology Data Exchange (ETDEWEB)

    Harness, J.; Atalay, A.; Koll, K.J.; Zhang, H.; Maggon, D.

    1991-12-31

    The objective of this program was to conduct an environmental impact assessment study for selenium from coal mine spoils. The use of in-situ lysimetry to predict selenium speciation, transformation, and mobility under natural conditions was evaluated. The scope of the study was to construct and test field-scale lysimeter and laboratory mini-column to assess mobility and speciation of selenium in coal mine overburden and soil systems; to conduct soil and groundwater sampling throughout the state of Oklahoma for an overall environmental impact assessment of selenium; and to conduct an in-depth literature review on the solubility, speciation, mobility, and toxicity of selenium from various sources. Groundwater and surface soil samples were also collected from each county in Oklahoma. Data collected from the lysimeter study indicated that selenium in the overburden of the abandoned mine site was mainly found in the selenite form. The amount of selenite found was too low and immobile to be of concern to the environment. The spoil had equilibrated long enough (over 50 years) that most of the soluble forms of selenium have already been lost. Examination of the overburden indicated the presence of pyrite crystals that precipitated over time. The laboratory mini-column study indicated that selenite is quite immobile and remained on the overburden material even after leaching with dilute acid. Data from groundwater samples indicated that based on the current permissible level for selenium in groundwater (0.01 mg Se/L), Oklahoma groundwater is widely contaminated with the element. However, according to the new regulation (0.05 mg Se/L), which is to be promulgated in 1992, only 9 of the 77 counties in the state exceed the limit.

  2. Prevention and forecasting of rock burst hazards in coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Lin-ming Dou; Cai-ping Lu; Zong-long Mu; Ming-shi Gao [China University of Mining & Technology, Xuzhou (China). State Key Laboratory for Coal Resource and Mine Safety

    2009-09-15

    Rock bursts signify extreme behavior in coal mine strata and severely threaten the safety of the lives of miners, as well as the effectiveness and productivity of miners. In our study, an elastic-plastic-brittle model for the deformation and failure of coal/rock was established through theoretical analyses, laboratory experiments and field testing, simulation and other means, which perfectly predict sudden and delayed rock bursts. Based on electromagnetic emission (EME), acoustic emission (AE) and microseismic (MS) effects in the process from deformation until impact rupture of coal-rock combination samples, a multi-parameter identification of premonitory technology was formed, largely depending on these three forms of emission. Thus a system of classification for forecasting rock bursts in space and time was established. We have presented the intensity weakening theory for rock bursts and a strong-soft-strong (3S) structural model for controlling the impact on rock surrounding roadways, with the objective of laying a theoretical foundation and establishing references for parameters for the weakening control of rock bursts. For the purpose of prevention, key technical parameters of directional hydraulic fracturing are revealed. Based on these results, as well as those from deep-hole controlled blasting in coal seams and rock, integrated control techniques were established and anti-impact hydraulic props, suitable for roadways subject to hazards from rockbursts have also been developed. These technologies have been widely used in most coal mines in China, subject to these hazards and have achieved remarkable economic and social benefits. 28 refs., 9 figs., 1 tab.

  3. Accurate thermodynamic characterization of a synthetic coal mine methane mixture

    International Nuclear Information System (INIS)

    Hernández-Gómez, R.; Tuma, D.; Villamañán, M.A.; Mondéjar, M.E.; Chamorro, C.R.

    2014-01-01

    Highlights: • Accurate density data of a 10 components synthetic coal mine methane mixture are presented. • Experimental data are compared with the densities calculated from the GERG-2008 equation of state. • Relative deviations in density were within a 0.2% band at temperatures above 275 K. • Densities at 250 K as well as at 275 K and pressures above 10 MPa showed higher deviations. -- Abstract: In the last few years, coal mine methane (CMM) has gained significance as a potential non-conventional gas fuel. The progressive depletion of common fossil fuels reserves and, on the other hand, the positive estimates of CMM resources as a by-product of mining promote this fuel gas as a promising alternative fuel. The increasing importance of its exploitation makes it necessary to check the capability of the present-day models and equations of state for natural gas to predict the thermophysical properties of gases with a considerably different composition, like CMM. In this work, accurate density measurements of a synthetic CMM mixture are reported in the temperature range from (250 to 400) K and pressures up to 15 MPa, as part of the research project EMRP ENG01 of the European Metrology Research Program for the characterization of non-conventional energy gases. Experimental data were compared with the densities calculated with the GERG-2008 equation of state. Relative deviations between experimental and estimated densities were within a 0.2% band at temperatures above 275 K, while data at 250 K as well as at 275 K and pressures above 10 MPa showed higher deviations

  4. Response of northern bats (Myotis septentrionalis) to prescribed fires in eastern Kentucky forests

    Science.gov (United States)

    Michael J. Lacki; Daniel R. Cox; Luke E. Dodd; Matthew B. Dickinson

    2009-01-01

    Prescribed fire is becoming a common management tool for restoring forests of North America; however, effects of prescribed fire on forest-dwelling bats remain unclear. During 2006 and 2007, we monitored prey availability, diet, foraging behavior, and roost selection of adult female northern bats (Myotis septentrionalis) before and after 2 prescribed...

  5. Virginia big-eared bats (Corynorhinus townsendii virginianus) roosting in abandoned coal mines in West Virginia

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, J.B.; Edwards, J.W.; Wood, P.B. [West Virginia University, Morgantown, WV (US). Wildlife & Fisheries Resources Programme

    2005-07-01

    We surveyed bats at 36 abandoned coal mines during summer 2002 and 47 mines during fall 2002 at New River Gorge National River and Gauley River National Recreation Area, WV. During summer, we captured three federally endangered Virginia big-eared bats at two mine entrances, and 25 were captured at 12 mine entrances during fall. These represent the first documented captures of this species at coal mines in West Virginia. Future survey efforts conducted throughout the range of the Virginia big-eared bat should include abandoned coal mines.

  6. Management of mining-related damages in abandoned underground coal mine areas using GIS

    International Nuclear Information System (INIS)

    Lee, U.J.; Kim, J.A.; Kim, S.S.; Kim, W.K.; Yoon, S.H.; Choi, J.K.

    2005-01-01

    The mining-related damages such as ground subsidence, acid mine drainage (AMD), and deforestation in the abandoned underground coal mine areas become an object of public concern. Therefore, the system to manage the mining-related damages is needed for the effective drive of rehabilitation activities. The management system for Abandoned Underground Coal Mine using GIS includes the database about mining record and information associated with the mining-related damages and application programs to support mine damage prevention business. Also, this system would support decision-making policy for rehabilitation and provide basic geological data for regional construction works in abandoned underground coal mine areas. (authors)

  7. Safety Psychology Applicating on Coal Mine Safety Management Based on Information System

    Science.gov (United States)

    Hou, Baoyue; Chen, Fei

    In recent years, with the increase of intensity of coal mining, a great number of major accidents happen frequently, the reason mostly due to human factors, but human's unsafely behavior are affected by insecurity mental control. In order to reduce accidents, and to improve safety management, with the help of application security psychology, we analyse the cause of insecurity psychological factors from human perception, from personality development, from motivation incentive, from reward and punishment mechanism, and from security aspects of mental training , and put forward countermeasures to promote coal mine safety production,and to provide information for coal mining to improve the level of safety management.

  8. Influence of surface water accumulations of the Stupnica creek on underground coal mining in the Durdevic coal mine

    Energy Technology Data Exchange (ETDEWEB)

    Valjarevic, R; Urosevic, V

    1986-01-01

    Discusses hydrological, geological and mining conditions at the Durdevic underground coal mine. A landslide at a spoil bank dammed the creek flowing above the mine. Two exploratory boreholes (62 m and 68 m) were drilled for hydrological investigations. Water coloring techniques, chemical water analysis, measurement of underground water level and water flow were used to determine whether a sudden inrush of rainfall and accumulated surface water could endanger the mine. Underground water inflow to mine rooms varies from 110-200 m/sup 3//min, depending on the season. Diversion of the creek bed with the accumulated water and accumulation and subsequent drainage of surface water via large diameter concrete pipes were considered as possible ways of improving safety in the mine. Details of these projects are included. 4 refs.

  9. Coal mining situation in the Federal Republic of Germany. The 1st quarter 2015

    International Nuclear Information System (INIS)

    2015-01-01

    The paper reports on the coal mining in the Federal Republic of Germany in the 1st quarter of 2015. Statistical data are presented for mining, exports and imports of hard coal and lignite and for employees.

  10. Coal mining situation in the Federal Republic of Germany. The 1st quarter 2017

    International Nuclear Information System (INIS)

    2017-01-01

    The paper reports on the coal mining in the Federal Republic of Germany in the 1st quarter of 2017. Statistical data are presented for mining, exports and imports of hard coal and lignite and for employees.

  11. Observations on strategic planning of information technology in the Indian coal mining industry

    Energy Technology Data Exchange (ETDEWEB)

    Owen, D.

    1988-05-01

    A view of the needs and plans to improve the coal mining industry of India is presented, focusing primarily on telecommunications and computerization. Further, details on mining electronics and vendor relationships with foreign firms are also discussed. 4 refs.

  12. 75 FR 39735 - Mandatory Reporting of Greenhouse Gases From Magnesium Production, Underground Coal Mines...

    Science.gov (United States)

    2010-07-12

    ... sectors of the economy, including fossil fuel suppliers, industrial gas suppliers, and direct emitters of... Part II Environmental Protection Agency 40 CFR Part 98 Mandatory Reporting of Greenhouse Gases From Magnesium Production, Underground Coal Mines, Industrial Wastewater Treatment, and Industrial...

  13. The effects of coal mining on the landscapes of the Ostrava Region

    Czech Academy of Sciences Publication Activity Database

    Martinec, Petr; Schejbalová, Božena; Hortvík, Karel; Maníček, J.

    2005-01-01

    Roč. 13, č. 2 (2005), s. 13-26 ISSN 1210-8812 Institutional research plan: CEZ:AV0Z30860518 Keywords : Ostrava region * coal mining * methane emission * mine waters Subject RIV: DB - Geology ; Mineralogy

  14. Evaluation of remediation of coal mining wastewater by chitosan microspheres using biomarkers

    Energy Technology Data Exchange (ETDEWEB)

    Benassi, J.C.; Laus, R.; Geremias, R.; Lima, P.L.; Menezes, C.T.B.; Laranjeira, M.C.M.; Wilhelm, D.; Favere, V.T.; Pedrosa, R.C. [Universidade Federal de Santa Catarina, Florianopolis (Brazil)

    2006-11-15

    The aim of this work was to evaluate the remediation of mining wastewater effluents by chitosan microspheres using biomarkers of exposure and effect. DNA damage (Comet assay) and several biomarkers of oxidative stress, such as lipoperoxidation levels (TBARS), superoxide dismutase (SOD), catalase (CAT), and glutathione S-transferase (GST) activities, and contents of reduced glutathione (GSH), were measured in blood and liver of tilapia (Oreochromis niloticus) exposed for 7, 15, and 30 days to dechlorinated tap water, 10% coal mining wastewater (CMW), and coal mining wastewater treated with chitosan microspheres (RCM). The results obtained indicated that the use of oxidative stress biomarkers were useful tools for the toxicity evaluation of coal mining effluents and also suggest that chitosan microspheres may be used as an alternative approach for remediation of coal mining wastewaters.

  15. Is there an association of circulatory hospitalizations independent of mining employment in coal-mining and non-coal-mining counties in west virginia?

    Science.gov (United States)

    Talbott, Evelyn O; Sharma, Ravi K; Buchanich, Jeanine; Stacy, Shaina L

    2015-04-01

    Exposures associated with coal mining activities, including diesel fuel exhaust, products used in coal processing, and heavy metals and other forms of particulate matter, may impact the health of nearby residents. We investigated the relationships between county-level circulatory hospitalization rates (CHRs) in coal and non-coal-mining communities of West Virginia, coal production, coal employment, and sociodemographic factors. Direct age-adjusted CHRs were calculated using West Virginia hospitalizations from 2005 to 2009. Spatial regressions were conducted to explore associations between CHR and total, underground, and surface coal production. After adjustment, neither total, nor surface, nor underground coal production was significantly related to rate of hospitalization for circulatory disease. Our findings underscore the significant role sociodemographic and behavioral factors play in the health and well-being of coal mining communities.

  16. Genotoxic effects in wild rodents (Rattus rattus and Mus musculus) in an open coal mining area.

    Science.gov (United States)

    León, Grethel; Pérez, Lyda Espitia; Linares, Juan Carlos; Hartmann, Andreas; Quintana, Milton

    2007-06-15

    Coal is a mixture of a variety of compounds containing mutagenic and carcinogenic polycyclic aromatic hydrocarbons. Exposure to coal is considered as an important non-cellular and cellular source of reactive oxygen species that can induce DNA damage. In addition, spontaneous combustion can occur in coal mining areas, further releasing compounds with detrimental effects on the environment. In this study the comet assay was used to investigate potential genotoxic effects of coal mining activities in peripheral blood cells of the wild rodents Rattus rattus and Mus musculus. The study was conducted in a coal mining area of the Municipio de Puerto Libertador, South West of the Departamento de Cordoba, Colombia. Animals from two areas in the coal mining zone and a control area located in the Municipio de Lorica were investigated. The results showed evidence that exposure to coal results in elevated primary DNA lesions in blood cells of rodents. Three different parameters for DNA damage were assessed, namely, DNA damage index, migration length and percentage damaged cells. All parameters showed statistically significantly higher values in mice and rats from the coal mining area in comparison to the animals from the control area. The parameter "DNA Damage Index" was found to be most sensitive and to best indicate a genotoxic hazard. Both species investigated were shown to be sensitive indicators of environmental genotoxicity caused by coal mining activities. In summary, our study constitutes the first investigation of potential genotoxic effects of open coal mining carried out in Puerto Libertador. The investigations provide a guide for measures to evaluate genotoxic hazards, thereby contributing to the development of appropriate measures and regulations for more careful operations during coal mining.

  17. Application Research on Testing Efficiency of Main Drainage Pump in Coal Mine Using Thermodynamic Theories

    OpenAIRE

    Shang, Deyong

    2017-01-01

    The efficiency of a drainage pump should be tested at regular intervals to master the status of the drainage pump in real time and thus achieve the goal of saving energy. The ultrasonic flowmeter method is traditionally used to measure the flow of the pump. But there are some defects in this kind of method of underground coal mine. This paper first introduces the principle of testing the main drainage pump efficiency in coal mine using thermodynamic theories, then analyzes the energy transfor...

  18. Determine Appropriate Post Mining Land Use in Indonesia Coal Mining Using Land Suitability Evaluation

    OpenAIRE

    Maryati, Sri; Shimada, Hideki; Hamanaka, Akihiro; Sasaoka, Takashi; Matsui, Kikuo

    2012-01-01

    Coal mining industry gives many benefits for Indonesia including contribution in total Indonesian GDP. Most of coal mines in Indonesia are open pit mining method which disturbs large area of land. One of open pit mining impact is damage land and related to soil erosion occurrences it will degrade land by top soil loses. Indonesia Government has issued mine closure regulation to encourage mining industry provide post mining land use. Determination of post mining land use should be considering ...

  19. Web of Things-Based Remote Monitoring System for Coal Mine Safety Using Wireless Sensor Network

    OpenAIRE

    Bo, Cheng; Xin, Cheng; Zhongyi, Zhai; Chengwen, Zhang; Junliang, Chen

    2014-01-01

    Frequent accidents have occurred in coal mine enterprises; therefore, raising the technological level of coal mine safety monitoring systems is an urgent problem. Wireless sensor networks (WSN), as a new field of research, have broad application prospects. This paper proposes a Web of Things- (WoT-) based remote monitoring system that takes full advantage of wireless sensor networks in combination with the CAN bus communication technique that abstracts the underground sensor data and capabili...

  20. Review : Pollution due to Coal Mining Activity and its Impact on Environment

    OpenAIRE

    Andi Arif Setiawan; Dedik Budianta; Dwi Putro Priadi; Suheryanto

    2018-01-01

    Utilization of natural resources in the form of coal mines has a positive impact on economic and energy development, in addition to coal mining activities have a negative impact on the environment that result in environmental pollution in soil, water, and air. Pollution begins when clearing land, taking exploitation, transporting, stockpile and when the coal is burned. When land clearing causes damage to forest ecosystems. At the time of exploitation impact on air pollution by coal dust parti...

  1. First aid to miners suffering from overheating in deep coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Makartsev, V.I.; Tsepurdei, A.A.; Zabolotnii, V.N.; Mozhaev, G.A.; Gridin, V.S. (Vsesoyuznyi Nauchno-Issledovatel' skii Institut Gornospasatel' nogo Dela (Russian Federation))

    1993-03-01

    Describes the symptoms of hyperthermia and approaching thermal shock in coal miners working in deep coal mines. First aid is given to miners suffering from hyperthermia and thermal shock. It is pointed out that prolonged exposure to elevated temperatures at workplaces can result in thermal exhaustion with a deficit of body fluids and minerals. Thermal exhaustion is characterized by general weakness, headaches, insomnia, sleepiness, choleric mood, emotional upset, tremulous pulse and labored breathing. Preventive measures against overheating in deep coal mines are listed.

  2. Arctic vegetation damage by winter-generated coal mining pollution released upon thawing

    DEFF Research Database (Denmark)

    Elberling, B.; Søndergaard, J.; Jensen, L.A.

    2007-01-01

    summer period. Here we show that heat generation within an oxidizing, sulfidic, coal-mining waste-rock pile in Svalbard (78° N) is high enough to keep the pile warm (roughly 5 °C throughout the year) despite mean annual air temperatures below -5 °C. Consequently, weathering processes continue year...... the adverse environmental impacts of cold region coal-mining need to pay more attention to winter processes including AMD generation and accumulation of weathering products....

  3. An account of tolerant plant species growing on coal mine wastes of Talcher, Orissa

    Energy Technology Data Exchange (ETDEWEB)

    Sahu, R.K.; Deo, B.; Mallick, U.C.; Maharana, R.C.

    1989-02-20

    The present study describes a specialized vegetation tolerant to nutrient-deficient and trace-metal-enriched soil of coal mine waste at Talcher, Orissa. A total of 105 species, belonging to 40 families, have been reported, and two species with morphological abnormalities have been detected. The importance of such floristic studies for revegetation of abandoned coal mine sites has been suggested. 4 refs., 1 fig., 2 tabs.

  4. Booster fans : some considerations for their usage in underground coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Gillies, S.; Slaughter, C. [Missouri Univ. of Science and Technology, Rolla, MO (United States); Calizaya, F. [Utah Univ., Salt Lake City, UT (United States); Wu, H.W. [Gillies Wu Mining Technology Pty Ltd., Brisbane, QLD (Australia)

    2010-07-01

    This paper reported on a study that investigated the conditions under which booster fans can be used safely and efficiently in underground coal mines. Booster fans are installed in series with a main surface fan and are used to boost the air pressure of the ventilation air passing through it. Several coal mining countries use booster fans, but in the United States, they are only used in metal/non-metal mines due to concerns of uncontrolled recirculation. This study investigated installations of booster fans in non-US underground coal mines where safe and efficient atmospheric conditions are achieved. The purpose was to collect reliable information on airway resistances and flow requirements typical in large US coal mines. The study showed that safe booster fan installations are found in both high and low gas conditions, and sometimes where workings are located at great depths. The interlocking systems within the booster fan can control the underground fans and avoid recirculation when surface fans are unexpectedly turned off. Another purpose of the study was to determine when booster fans become a more viable solution in coal mines due to increases in air requirements at higher production rates. It was concluded that a new fan selection algorithm to produce recirculation-free ventilation designs will be developed to enable US coal mine operators to develop ventilation designs to extract coal seams from depths greater than 1000 m. 17 refs., 1 fig.

  5. Gas Concentration Prediction Based on the Measured Data of a Coal Mine Rescue Robot

    Directory of Open Access Journals (Sweden)

    Xiliang Ma

    2016-01-01

    Full Text Available The coal mine environment is complex and dangerous after gas accident; then a timely and effective rescue and relief work is necessary. Hence prediction of gas concentration in front of coal mine rescue robot is an important significance to ensure that the coal mine rescue robot carries out the exploration and search and rescue mission. In this paper, a gray neural network is proposed to predict the gas concentration 10 meters in front of the coal mine rescue robot based on the gas concentration, temperature, and wind speed of the current position and 1 meter in front. Subsequently the quantum genetic algorithm optimization gray neural network parameters of the gas concentration prediction method are proposed to get more accurate prediction of the gas concentration in the roadway. Experimental results show that a gray neural network optimized by the quantum genetic algorithm is more accurate for predicting the gas concentration. The overall prediction error is 9.12%, and the largest forecasting error is 11.36%; compared with gray neural network, the gas concentration prediction error increases by 55.23%. This means that the proposed method can better allow the coal mine rescue robot to accurately predict the gas concentration in the coal mine roadway.

  6. Evaluation of Ecological Environmental Quality in a Coal Mining Area by Modelling Approach

    Directory of Open Access Journals (Sweden)

    Chaodong Yan

    2017-07-01

    Full Text Available The purpose of this study was to explore the effective method of the comprehensive evaluation of ecological environmental quality in a coal mining area. Firstly, we analyzed the ecological environmental effect of the coal mining area according to Pigovian Tax theory and, according to the results of the analysis and the demand for the selection of evaluation indices by the comprehensive evaluation, built the corresponding comprehensive evaluation index system. We then used the correlation function method to determine the relative weights of each index. We determined the basic standards of a comprehensive evaluation of ecological environmental quality in a coal mining area according to the actual situation of ecological environmental quality assessments in coal mining areas in our country and the relevant provisions of the government. On this basis, we built the two-level extension comprehensive evaluation model for the evaluation of ecological environmental quality in mining areas. Finally, we chose a certain coal mining area of Yanzhou Coal Mining Company Limited as the specific case. We used the relevant statistic data, technical and economic indices and the extension evaluation model to do the applied research of the comprehensive evaluation and tested the effectiveness of the comprehensive evaluation model.

  7. Long-term liablities of coal mining; Ewigkeitslasten im Kohlenbergbau

    Energy Technology Data Exchange (ETDEWEB)

    Frenz, Walter (ed.) [GDMB Gesellschaft der Metallurgen und Bergleute e.V., Clausthal-Zellerfeld (Germany)

    2016-07-01

    The closer the end of coal mining in 2018, the more the issue of groundwater re-emergence in the Ruhr area is also being considered. This is especially the case because currently the subject of restitution and liability issues in the area of contaminated sites of the peaceful use of nuclear energy is discussed. In addition, the companies concerned lost considerable value on the stock market. For this reason, the question of whether the financial provisions in the created foundation are sufficient to shoulder the expected responsibilities and measures also arises with regard to coal mining. The question is which measures are to be taken and where damages can occur. Additional impulses are given by the Meggen judgment of the BVerwG of 18.12.2014, which interpreted the responsibility of the mining companies very widely. In the Rhineland, an earthquake hit 2.4 on 22.12.2015 - probably due to a rise in groundwater around the closed opencast mine Bergheim. All these questions are included in the colloquium on economics and environmental law on 26 January 2016. This also includes experiences and problems from other federal states such as Brandenburg and Saxony. [German] Je naeher das Ende des Steinkohlenbergbaus 2018 rueckt, desto eher geraet auch die Frage des Grundwasserwiederanstiegs im Ruhrgebiet ins Blickfeld. Das gilt zumal deshalb, weil aktuell ueber Rueckstellung und Haftungsfragen im Bereich der Altlasten der friedlichen Nutzung der Kernenergie diskutiert wird. Zudem verloren die betroffenen Gesellschaften an der Boerse erheblich an Wert. Daher stellt sich auch in Bezug auf den Steinkohlenbergbau die Frage, ob die finanziellen Rueckstellungen in der geschaffenen Stiftung ausreichen, um die zu erwartenden Verantwortlichkeiten und Massnahmen schultern zu koennen. Vorgelagert ist die Frage, welche Massnahmen zu ergreifen sind und wo Schaeden auftreten koennen. Zusaetzliche Impulse bekommt diese Frage durch das Meggen-Urteil des BVerwG vom 18.12.2014, welches die

  8. Study on the transformed strategy of “life field” for aged in coal mine community——A case sstudy of ccommunity rrenewal ddesign of Sihe coal mine in Jincheng, Shanxi

    Science.gov (United States)

    Xue, Minghui; Wang, Chenghao; Zhang, Shanshan

    2017-06-01

    Coal mine community is driven by the coal mine industry, and it mainly relies on coal mining enterprises to provide benefits for residents. Under the background of increasing serious global aging problem, the problems in the field of elderly people’s health, life, entertainment, communication, retirement and re-employment and other aspects become more acute and urgently to be solved. So it is necessary to make a more detailed study on how to transform the coal mine community according to the special needs of the elderly miners. This article takes renewal design of SiHe coal mine in JinCheng of ShanXi province as an example and takes the community’s “life field” as a clue, trying to put forward the transformed strategy of “life field” for aged in coal mine community and to come up with a method to update the community throughout the whole atmosphere to the personal space.

  9. 30 CFR 75.1103-5 - Automatic fire warning devices; actions and response.

    Science.gov (United States)

    2010-07-01

    ... OF LABOR COAL MINE SAFETY AND HEALTH MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Fire..., the sensors that are activated must be identified and appropriate personnel immediately notified. (e... signal will be activated during calibration of sensors, personnel manning the surface location must be...

  10. Does Employer Monopsony Power Increase Occupational Accidents? The Case of Kentucky Coal Mines

    OpenAIRE

    Shulamit Kahn

    1991-01-01

    A popular argument for safety regulations is that workers accept dangerous jobs because they have "no choice," or, in other words, because they have few or no alternative employment opportunities. This argument is considered in a game-theoretic framework. Because simultaneous-entry models do not yield pure-strategy equilibria, this paper develops a sequential-entry model to analyze the effect of additional firms on occupational safety. Within the context of the particular functional specifica...

  11. Evolution of cultural landscape in the Northern Bohemian coal mining region on the background of socio-economic transformations

    International Nuclear Information System (INIS)

    Jerabek, M.

    1994-01-01

    The NW part of Bohemia belongs to the most intensely exploited territories, both from the functional and ecological standpoints. In a sense, it is an open air laboratory, offering many topics to be discussed, researched and solved. The author strives to give a sociogeographical outline of the current state, with respect to the landscape evolution. This picture focuses on historical developments in recent decades as well. Rapid economic expansion of the examined territory started in the second half of the 19th century, having followed the pre-industrial period. A similar abrupt change of social and economic structures occurred 100 years later, in the post-war period. It was the growth of open-cast brown coal mining and corresponding activities (especially coal-fired plants) which resulted in large scale environmental disturbances and affected the settlement system and health of the population. Thus, further economic and ecological development should be based on a reclamation of the previous state. 4 refs

  12. Revegetation of Alaskan coal mine spoils. Progress report

    Energy Technology Data Exchange (ETDEWEB)

    Mitchell, W W; Mitchell, G A; McKendrick, J D

    1980-05-23

    Activities initiated after the start of the revegetation project on Alaskan coal mine spoils on September 1, 1979 have consisted mainly of some fall plantings (dormant seedings) and soil and coal spoil samplings and analyses. Because of the late summer start for the project, only a limited amount of field work could be initiated in plant material studies. This consisted of a fall planting at the Usibelli mine site at Healy in interior Alaska. The planting was intended to test the efficacy of seeding in the frost period following the growing season, requiring the seed to remain dormant over winter and to germinate when conditions become favorable in late spring. It also was intended as a comparison of a number of different grasses. Thirty entries were seeded in three replications. Fifteen species of grasses and a clover were included in the trial. The site provided for the trial was on overburden material along a streambed. Among the entries were eight cultivars of introduced grasses, five cultivars of native Alaskan germplasm, one introduced clover cultivar, and sixteen experimental grasses mainly of Alaskan origin.

  13. Reclamation challenges at Usibelli Coal Mine in Healy, Alaska

    International Nuclear Information System (INIS)

    Jackson, L.P.

    1998-01-01

    Successful reclamation in the Interior of Alaska requires planning in order to avoid major setbacks. Usibelli Coal Mine is located at a North Latitude of approximately 64 degrees. Temperature extremes in the Interior of Alaska range from a high of 90 degrees Fahrenheit to a low of minus 60 degrees Fahrenheit. The challenges in this sub-arctic climate are many. Several unique reclamation challenges are present due to the cold climate. Discontinuous permafrost is prevalent on north facing slopes. This presents stability problems if placed in inappropriate locations. Very detailed planning is required to assure that no stability problems occur. The construction of drainage channels in ice-rich permafrost areas also requires extra care to assure that water flows along the surface rather than down into the spoil. Mineral topsoil is often not present on the areas to be mined. Often non-salvageable organic permafrost soils are present. These require special handling and must be isolated to avoid stability problems. Since the ground is frozen for 7--8 months a year the reestablishment of vegetation requires a very aggressive planting schedule. Grass seed is applied by fixed wing aircraft and shrubs are planted from locally collected seed. By planning properly prior to mining successful reclamation can take place in the Interior of Alaska

  14. Abandoned coal mine refuse areas: their reclamation and use

    Energy Technology Data Exchange (ETDEWEB)

    Zellmer, S. D.; Carter, R. P.

    1977-01-01

    There are over 4,000 abandoned deep coal mine refuse areas in Illinois ranging in size from a few acres to as large as 160 acres. These sites produce quantities of pollutants which affect the environment, have no real land value, and are a scar on the landscape. The Staunton 1 Site Reclamation Demonstration Project addressess these problems. It also is developing and evaluating new cost-effective methods for reclaiming refuse areas of this type. The program involved determining the final land use for the site, development of detailed engineering plans and specifications for the reclamation effort, a prereclamation environmental inventory, and implementation. Post-construction evaluation is now in process to determine the effectiveness of the reclamation effort. Detailed investigations are being conducted to determine surface water quality improvement, the amount of suitable surface cover and amendments required for revegetation, and field evaluation of candidate vegetation species for revegetation. Other research is examining soil microbial populations, soil fauna reactions, and changes in surface material characteristics at the reclamation site. Surveys are being conducted on groundwater quality, effects on the aquatic ecosystem, and wildlife use of the area. An economic evaluation is underway to determine the cost effectiveness of the total effort and of individual reclamation procedures. Preliminary results from the first year's environmental evaluation of various method tested will be described in detail. An economic assessment, including cost effectiveness, of the first year's work is given.

  15. Underground coal mine subsidence impacts on surface water

    International Nuclear Information System (INIS)

    Stump, D.E. Jr.

    1992-01-01

    This paper reports that subsidence from underground coal mining alters surface water discharge and availability. The magnitude and areal extent of these impacts are dependent on many factors, including the amount of subsidence, topography, geology, climate, surface water - ground water interactions, and fractures in the overburden. There alterations may have positive and/or negative impacts. One of the most significant surface water impacts occurred in July 1957 near West Pittston, Pennsylvania. Subsidence in the Knox Mine under the Coxton Yards of the Lehigh Valley Railroad allowed part of the discharge in the Susquehanna River to flow into the mine and create a crater 200 feet in diameter and 300 feet deep. Fourteen railroad gondola cars fell into the hole which was eventually filled with rock, sand, and gravel. Other surface water impacts from subsidence may include the loss of water to the ground water system, the gaining of water from the ground water system, the creation of flooded subsidence troughs, the increasing of impoundment storage capacity, the relocation of water sources (springs), and the alteration of surface drainage patterns

  16. Barrier pillar between production panels in coal mine

    Energy Technology Data Exchange (ETDEWEB)

    Zingano, Andre Cezar; Koppe, Jair Carlos; Costa, Joao Felipe C.L. [Universidade Federal do Rio Grande do Sul, Porto Alegre (Brazil)

    2007-07-01

    The function of the barrier pillar is to protect the mining panel in activity from the abutment load of adjacent mining panels that were mined. In the case of underground mines in Santa Catarina State, the barrier pillar has functioned to protect the main entries of the mine against pillar failure from old mining panels. The objective of this paper is to verify the application of the empirical method to design barrier pillars as proposed by Peng (1986), using numerical simulation following the mining geometry of the coal mines in Santa Catarina State. Two-dimensional numerical models were built taking into account the geometry of the main entries and mining panels for different overburden thickness, and considering the geomechanical properties for the rock mass that forms the roof-pillar-floor system for the Bonito coal vein. The results of the simulations showed that the empirical method to determine the barrier pillar width is valid for the studied coal vein and considered mine geometry. Neither did the pillar at the main entry become overstressed due to adjacent mine panels, nor did the roof present any failure due to stress redistribution. 9 refs., 6 figs., 5 tabs.

  17. Coal mine subsidence: effects of mitigation on crop yields

    International Nuclear Information System (INIS)

    Darmody, R.G.; Hetzler, R.T.; Simmons, F.W.

    1992-01-01

    Subsidence from longwall underground coal mining adversely impacts agricultural land by creating wet or ponded areas. While most subsided areas show little impact, some localized places, usually less than 1.5 ha in size, may experience total crop failure. Coal companies mitigate subsidence damaged cropland by installing drainage waterways or by adding fill material to raise the grade. The objective of this study was to test the effectiveness of mitigation in restoring corn and soybean yields to pre-mined levels. Fourteen sites in southern Illinois were selected for study. Corn (Zea mays L.) and soybean (Glycine max L.) yields from mitigated and nearby undisturbed areas were compared for four years. Results varied due to differing weather and site conditions. Mean corn yields overall, however were significantly (α0.05) lower on mitigated areas. There was no significant difference in overall mean soybean yields. Soil fertility levels were similar and did not account for yield differences. 14 refs., 1 fig., 7 tabs

  18. Natural radioactivity associated with bituminous coal mining in Nigeria

    International Nuclear Information System (INIS)

    Balogun, F.A.; Mokobia, C.E.; Fasasi, M.K.; Ogundare, F.O.

    2003-01-01

    Gamma spectroscopic method was used to determine the natural radioactivity associated with the mining of Nigerian bituminous coal for the purpose of determining the radiological implications of coal mining in the country. The activity concentrations of the radionuclides detected range from 0.20±0.002 to 48.42±5.32 Bq kg -1 . The overall natural radionuclide contribution to the radioactivity of the environment was found to be 404.16±23.44 Bq kg -1 . Of this, coal waste (tailing) alone contributed 49.5% representing the largest contribution. Coal contributed just 5.5%. A comparison of the concentrations obtained in this work for coal with those from other parts of the world indicates that the radioactivity content of the Nigerian bituminous coal is not significantly different. The outdoor and indoor exposure rates in air 1 m above the ground are estimated to be (6.31±1.20)x10 -8 and (7.57±1.20) x10 -8 Gy h -1 , respectively, for the mining environment. These values compare very well with the global values reported by UNSCEAR: 5x10 -8 and 6x10 -8 Gy h -1 , respectively. The resulting annual effective dose equivalent estimated is (4.49±0.74)x10 -4 Sv yr -1 . This also compares favourably with the global value -4x10 -4 Sv yr -1 , reported by UNSCEAR

  19. Impact of coal mining subsidence on farmland in eastern China

    International Nuclear Information System (INIS)

    Hu, Z.; Hu, F.; Li, J.; Li, H.

    1997-01-01

    This paper discusses damage characteristics of farmland due to coal mining subsidence in eastern China. The landscape of the mining subsidence trough has been divided into three zones; central zone, trough margin zone an dinner-edge zone. Each zone had a specific characteristic of deformation. The water accumulation, prone (downward sloping) land and fissures are typical damage characteristics of the subsidence landscape in eastern China. Based on soils analysis at different positions of the subsidence trough, the impact of mining subsidence on soil properties was identified. The physical properties of soil sensitive to mining subsidence were bulk density, water content and hydraulic conductivity, and they showed worsening form the top to the centre of the subsidence trough. Except for soil electrical conductivity, the tested soil chemical properties were not so sensitive to mining subsidence. They may however change after subsidence. An accumulation of salt was found in both new and old subsidence areas and the old subsidence area had a higher salt content. The soil biomass C in newly subsided land showed a decreasing trend from the top to the centre of the subsidence trough, but no obvious trend was observed in the old subsidence areas. Based on the soil analysis of subsided land, soil erosion was identified as a serious problem, most severe in the middle of the prone land. 4 refs., 5 figs., 1 tab

  20. Respirable quartz hazard associated with coal mine roof bolter dust

    International Nuclear Information System (INIS)

    Joy, G.J.; Beck, T.W.; Listak, J.M.

    2010-01-01

    Pneumoconiosis has been reported to be increasing among underground coal miners in the Southern Appalachian Region. The National Institute for Occupational Safety and Health conducted a study to examine the particle size distribution and quartz content of dust generated by the installation of roof bolts in mines. Forty-six bulk samples of roof bolting machine pre-cleaner cyclone dump dust and collector box dust were collected from 26 underground coal mines. Real-time and integrated airborne respirable dust concentrations were measured on 3 mining sections in 2 mines. The real-time airborne dust concentrations profiles were examined to identify any concentration changes that might be associated with pre-cleaner cyclone dust discharge events. The study showed that bolter dust is a potential inhalation hazard due to the fraction of dust less than 10 μm in size, and the quartz content of the dust. The pre-cleaner cyclone dust was significantly larger than the collector box dust, indicating that the pre-cleaner functioned properly in removing the larger dust size fraction from the airstream. However, the pre-cleaner dust still contained a substantial amount of respirable dust. It was concluded that in order to maintain the effectiveness of a roof bolter dust collector, periodic removal of dust is required. Appropriate work procedures and equipment are necessary to minimize exposure during this cleaning task. 13 refs., 3 tabs., 2 figs.

  1. Assessment of respirable dust exposures in an opencast coal mine.

    Science.gov (United States)

    Onder, M; Yigit, E

    2009-05-01

    All major opencast mining activities produce dust. The major operations that produce dust are drilling, blasting, loading, unloading, and transporting. Dust not only deteriorates the environmental air quality in and around the mining site but also creates serious health hazards. Therefore, assessment of dust levels that arise from various opencast mining operations is required to prevent and minimize the health risks. To achieve this objective, an opencast coal mining area was selected to generate site-specific emission data and collect respirable dust measurement samples. The study covered various mining activities in different locations including overburden loading, stock yard, coal loading, drilling, and coal handling plant. The dust levels were examined to assess miners' exposure to respirable dust in each of the opencast mining areas from 1994 to 2005. The data obtained from the dust measurement studies were evaluated by using analysis of variance (ANOVA) and the Tukey-Kramer procedure. The analyses were performed by using Minitab 14 statistical software. It was concluded that, drilling operations produce higher dust concentration levels and thus, drill operators may have higher incidence of respiratory disorders related to exposure to dust in their work environment.

  2. Optimizing wireless LAN for longwall coal mine automation

    Energy Technology Data Exchange (ETDEWEB)

    Hargrave, C.O.; Ralston, J.C.; Hainsworth, D.W. [Exploration & Mining Commonwealth Science & Industrial Research Organisation, Pullenvale, Qld. (Australia)

    2007-01-15

    A significant development in underground longwall coal mining automation has been achieved with the successful implementation of wireless LAN (WLAN) technology for communication on a longwall shearer. WIreless-FIdelity (Wi-Fi) was selected to meet the bandwidth requirements of the underground data network, and several configurations were installed on operating longwalls to evaluate their performance. Although these efforts demonstrated the feasibility of using WLAN technology in longwall operation, it was clear that new research and development was required in order to establish optimal full-face coverage. By undertaking an accurate characterization of the target environment, it has been possible to achieve great improvements in WLAN performance over a nominal Wi-Fi installation. This paper discusses the impact of Fresnel zone obstructions and multipath effects on radio frequency propagation and reports an optimal antenna and system configuration. Many of the lessons learned in the longwall case are immediately applicable to other underground mining operations, particularly wherever there is a high degree of obstruction from mining equipment.

  3. Feasibility of using the water from the abandoned and flooded coal mines as an energy resource for space heating

    OpenAIRE

    Athresh, AP

    2017-01-01

    This research project aims to study the feasibility of using the water from the abandoned and flooded coal mines for space heating applications using a Ground Source Heat Pump (GSHP) in open loop configuration and take a conceptual idea to a commercial deployment level. The flooded coal mines are the legacy that has been left behind after the three centuries of continuous operations by the coal mining industry. The closure of all coal mines in the UK has led to the flooding of all those aband...

  4. Australian coal mine methane emissions mitigation potential using a Stirling engine-based CHP system

    International Nuclear Information System (INIS)

    Meybodi, Mehdi Aghaei; Behnia, Masud

    2013-01-01

    Methane, a major contributor to global warming, is a greenhouse gas emitted from coal mines. Abundance of coal mines and consequently a considerable amount of methane emission requires drastic measures to mitigate harmful effects of coal mining on the environment. One of the commonly adopted methods is to use emitted methane to fuel power generation systems; however, instability of fuel sources hinders the development of systems using conventional prime movers. To address this, application of Stirling engines may be considered. Here, we develop a techno-economic methodology for conducting an optimisation-based feasibility study on the application of Stirling engines as the prime movers of coal mine CHP systems from an economic and an environmental point of view. To examine the impact of environmental policies on the economics of the system, the two commonly implemented ones (i.e. a carbon tax and emissions trading scheme) are considered. The methodology was applied to a local coal mine. The results indicate that incorporating the modelled system not only leads to a substantial reduction in greenhouse gas emissions, but also to improved economics. Further, due to the heavy economic burden, the carbon tax scheme creates great incentive for coal mine industry to address the methane emissions. -- Highlights: •We study the application of Stirling engines in coal mine CHP systems. •We develop a thermo-economic approach based on the net present worth analysis. •We examine the impact of a carbon tax and ETS on the economics of the system. •The modeled system leads to a substantial reduction in greenhouse gas emissions. •Carbon tax provides a greater incentive to address the methane emissions

  5. The Imposition Environmental Cost-Loading Of Companies Investing In Coal Mining

    Directory of Open Access Journals (Sweden)

    Tomi Risman

    2015-08-01

    Full Text Available The instrument of environment is an effort to prevent environmental problems caused by mining activities both in forms and its nature. The aims of the study are to analyze and understanding the essence of environment cost-loading in order to restore the environment from coal mining activities both when mining taken place and post-mining. The type of research used is a normative-legal research. This research was conducted in the province of South Kalimantan with the consideration that the South Kalimantan is one of the largest coal-producing Provinces in Indonesia. In addition the environment cost-loading for investor in coal mining have the same properties in all coal mining sites in Indonesia. The results of the research indicated that the imposition and environment-cost in investment activity in the field of coal mining can be seen from the two approaches i.e the economic and legal approach. Economic approach is an approach that emphasizes the economic benefits gained by the owner of activities when they comply with the environmental requirements stipulated by laws and environmental regulations. Realizing the importance of environmental cost-loading for the company that manages the coal mining especially for the utilization of prevention of pollution caused by coal mining activity it is necessary to develop an institutional guarantee of recovery from the effects of pollution by establishing fund insurance for environmental restoration as a result of pollution. Thus in order to optimize the implementation of guarantee fund for environmental restoration are specifically utilized for post-mining reclamation then granting the status of Clean and Clear C amp C for coal mining investor must be presupposing the proof of guarantee fund has been placed for environmental restoration post-mining.

  6. Predicted coal production trends in Kentucky: The results of available coal resources, coal quality demands, and regulatory factors

    International Nuclear Information System (INIS)

    Watson, W.D.

    1993-01-01

    Many factors affect the viability of regional coal production markets including (1) coal quality and recoverable tonnage, (2) coal mining cost, (3) the regional and time varying patterns of coal demand growth, (4) regulations and other institutional constraints that affect coal demand and utilization, and (5) the regional array of coal transport modes and rates. This analysis integrates these factors into an assessment of coal production prospects (separately) for eastern and western Kentucky coal producing counties for the decade of the 90's. The integration indicates that eastern Kentucky coal production will peak and begin to decline by the end of the decade whereas western Kentucky coal production will continue to grow. No single factor explains these trends. There is plenty of available minable coal. The combination of changes in environmental regulations, some increase in coal mining costs, and the mining-out of low sulfur reserves are the main factors that account for the production trends

  7. Coal mining and the resource community cycle: A longitudinal assessment of the social impacts of the Coppabella coal mine

    Energy Technology Data Exchange (ETDEWEB)

    Lockie, S.; Franettovich, M.; Petkova-Timmer, V.; Rolfe, J.; Ivanova, G. [CQUniversity of Australia, Rockhampton, Qld. (Australia). Inst. of Health & Social Science Research

    2009-09-15

    Two social impact assessment (SIA) studies of Central Queensland's Coppabella coal mine were undertaken in 2002-2003 and 2006-2007. As ex post studies of actual change, these provide a reference point for predictive assessments of proposed resource extraction projects at other sites, while the longitudinal element added by the second study illustrates how impacts associated with one mine may vary over time due to changing economic and social conditions. It was found that the traditional coupling of local economic vitality and community development to the life cycle of resource projects - the resource community cycle - was mediated by labour recruitment and social infrastructure policies that reduced the emphasis on localised employment and investment strategies. and by the cumulative impacts of multiple mining projects within relative proximity to each other. The resource community cycle was accelerated and local communities forced to consider ways of attracting secondary investment and/or alternative industries early in the operational life of the Coppabella mine in order to secure significant economic benefits and to guard against the erosion of social capital and the ability to cope with future downturns in the mining sector.

  8. Coal mining and the resource community cycle: A longitudinal assessment of the social impacts of the Coppabella coal mine

    International Nuclear Information System (INIS)

    Lockie, Stewart; Franettovich, Maree; Petkova-Timmer, Vanessa; Rolfe, John; Ivanova, Galina

    2009-01-01

    Two social impact assessment (SIA) studies of Central Queensland's Coppabella coal mine were undertaken in 2002-2003 and 2006-2007. As ex post studies of actual change, these provide a reference point for predictive assessments of proposed resource extraction projects at other sites, while the longitudinal element added by the second study illustrates how impacts associated with one mine may vary over time due to changing economic and social conditions. It was found that the traditional coupling of local economic vitality and community development to the life cycle of resource projects-the resource community cycle-was mediated by labour recruitment and social infrastructure policies that reduced the emphasis on localised employment and investment strategies, and by the cumulative impacts of multiple mining projects within relative proximity to each other. The resource community cycle was accelerated and local communities forced to consider ways of attracting secondary investment and/or alternative industries early in the operational life of the Coppabella mine in order to secure significant economic benefits and to guard against the erosion of social capital and the ability to cope with future downturns in the mining sector.

  9. Development trends in the Lusatian brown coal mining industry

    International Nuclear Information System (INIS)

    Schwirten, D.

    1994-01-01

    Lusatia has lived on and with brown coal for over 200 years. Brown coal changed what was once a region in which forestry and agriculture predominated into an industrial region. Thanks to its good combustion properties and high energy yield brown coal very soon became known and popular. It was always the driving force for a rapid development which resulted in an economically sound and technically up-to-date industry in Lusatia. This powerful status of brown coal was however soon exploited for aims which were bound to lead to the downfall of two social structures (during the years from 1933 to 1990) by reason of a regime of unconditional autarchy. The economic and technical development thus initiated certainly brought many advantages, but it also had serious diadvantages. Constant increases in production, as a result of which planned rated outputs were intentionally disregarded, were the rule because production targets had to be met or exceeded. Economic inefficiency led to a scarcity of labour and a shortage of finances. Environmental aims had no priority since production was the absolute, primary objective. Consequently, this regime of economic autarchy ended in an one-way street as far as industry was concerned, a situation which was accompanied by an unexampled destruction of the natural basic living conditions and direct, threatening health hazards to man and nature. The year 1990 saw the beginning of the transition from planned controlled economy to free market economy. The reorganization of the former large combines as corporations was not however merely a formal change, but internally also represented a transformation. The brown coal mining industry manifested its new intention and determination to be economically competitive and unsubsidized in future, to operate in such a way as to be compatible with the environment and to exploit reserves carefully, as well as to render its activities socially compatible. (orig.) [de

  10. Miners' return to work following injuries in coal mines.

    Science.gov (United States)

    Bhattacherjee, Ashis; Kunar, Bijay Mihir

    2016-12-22

    The occupational injuries in mines are common and result in severe socio-economical consequences. Earlier studies have revealed the role of multiple factors such as demographic factors, behavioral factors, health-related factors, working environment, and working conditions for mine injuries. However, there is a dearth of information about the role of some of these factors in delayed return to work (RTW) following a miner's injury. These factors may likely include personal characteristics of injured persons and his or her family, the injured person's social and economic status, and job characteristics. This study was conducted to assess the role of some of these factors for the return to work following coal miners' injuries. A study was conducted for 109 injured workers from an underground coal mine in the years 2000-2009. A questionnaire, which was completed by the personnel interviews, included among others age, height, weight, seniority, alcohol consumption, sleeping duration, presence of diseases, job stress, job satisfaction, and injury type. The data was analyzed using the Kaplan-Meier estimates and the Cox proportional hazard model. According to Kaplan-Meier estimate it was revealed that a lower number of dependents, longer sleep duration, no job stress, no disease, no alcohol addiction, and higher monthly income have a great impact on early return to work after injury. The Cox regression analysis revealed that the significant risk factors which influenced miners' return to work included presence of disease, job satisfaction and injury type. The mine management should pay attention to significant risk factors for injuries in order to develop effective preventive measures. Med Pr 2016;67(6):729-742. This work is available in Open Access model and licensed under a CC BY-NC 3.0 PL license.

  11. Miners’ return to work following injuries in coal mines

    Directory of Open Access Journals (Sweden)

    Ashis Bhattacherjee

    2016-12-01

    Full Text Available Background: The occupational injuries in mines are common and result in severe socio-economical consequences. Earlier studies have revealed the role of multiple factors such as demographic factors, behavioral factors, health-related factors, working environment, and working conditions for mine injuries. However, there is a dearth of information about the role of some of these factors in delayed return to work (RTW following a miner’s injury. These factors may likely include personal characteristics of injured persons and his or her family, the injured person’s social and economic status, and job characteristics. This study was conducted to assess the role of some of these factors for the return to work following coal miners’ injuries. Material and Methods: A study was conducted for 109 injured workers from an underground coal mine in the years 2000–2009. A questionnaire, which was completed by the personnel interviews, included among others age, height, weight, seniority, alcohol consumption, sleeping duration, presence of diseases, job stress, job satisfaction, and injury type. The data was analyzed using the Kaplan-Meier estimates and the Cox proportional hazard model. Results: According to Kaplan-Meier estimate it was revealed that a lower number of dependents, longer sleep duration, no job stress, no disease, no alcohol addiction, and higher monthly income have a great impact on early return to work after injury. The Cox regression analysis revealed that the significant risk factors which influenced miners’ return to work included presence of disease, job satisfaction and injury type. Conclusions: The mine management should pay attention to significant risk factors for injuries in order to develop effective preventive measures. Med Pr 2016;67(6:729–742

  12. Coal mining activities change plant community structure due to air pollution and soil degradation.

    Science.gov (United States)

    Pandey, Bhanu; Agrawal, Madhoolika; Singh, Siddharth

    2014-10-01

    The aim of this study was to investigate the effects of coal mining activities on the community structures of woody and herbaceous plants. The response of individual plants of community to defilement caused by coal mining was also assessed. Air monitoring, soil physico-chemical and phytosociological analyses were carried around Jharia coalfield (JCF) and Raniganj coalfield. The importance value index of sensitive species minified and those of tolerant species enhanced with increasing pollution load and altered soil quality around coal mining areas. Although the species richness of woody and herbaceous plants decreased with higher pollution load, a large number of species acclimatized to the stress caused by the coal mining activities. Woody plant community at JCF was more affected by coal mining than herbaceous community. Canonical correspondence analysis revealed that structure of herbaceous community was mainly driven by soil total organic carbon, soil nitrogen, whereas woody layer community was influenced by sulphur dioxide in ambient air, soil sulphate and soil phosphorus. The changes in species diversity observed at mining areas indicated an increase in the proportion of resistant herbs and grasses showing a tendency towards a definite selection strategy of ecosystem in response to air pollution and altered soil characteristics.

  13. Environmental impacts of coal mine and thermal power plant to the surroundings of Barapukuria, Dinajpur, Bangladesh.

    Science.gov (United States)

    Hossain, Md Nazir; Paul, Shitangsu Kumar; Hasan, Md Muyeed

    2015-04-01

    The study was carried out to analyse the environmental impacts of coal mine and coal-based thermal power plant to the surrounding environment of Barapukuria, Dinajpur. The analyses of coal, water, soil and fly ash were carried out using standard sample testing methods. This study found that coal mining industry and coal-based thermal power plant have brought some environmental and socio-economic challenges to the adjacent areas such as soil, water and air pollution, subsidence of agricultural land and livelihood insecurity of inhabitants. The pH values, heavy metal, organic carbon and exchangeable cations of coal water treated in the farmland soil suggest that coal mining deteriorated the surrounding water and soil quality. The SO4(2-) concentration in water samples was beyond the range of World Health Organisation standard. Some physico-chemical properties such as pH, conductivity, moisture content, bulk density, unburned carbon content, specific gravity, water holding capacity, liquid and plastic limit were investigated on coal fly ash of Barapukuria thermal power plant. Air quality data provided by the Barapukuria Coal Mining Company Limited were contradictory with the result of interview with the miners and local inhabitants. However, coal potentially contributes to the development of economy of Bangladesh but coal mining deteriorates the environment by polluting air, water and soil. In general, this study includes comprehensive baseline data for decision makers to evaluate the feasibility of coal power industry at Barapukuria and the coalmine itself.

  14. Higher coronary heart disease and heart attack morbidity in Appalachian coal mining regions.

    Science.gov (United States)

    Hendryx, Michael; Zullig, Keith J

    2009-11-01

    This study analyzes the U.S. 2006 Behavioral Risk Factor Surveillance System survey data (N=235,783) to test whether self-reported cardiovascular disease rates are higher in Appalachian coal mining counties compared to other counties after control for other risks. Dependent variables include self-reported measures of ever (1) being diagnosed with cardiovascular disease (CVD) or with a specific form of CVD including (2) stroke, (3) heart attack, or (4) angina or coronary heart disease (CHD). Independent variables included coal mining, smoking, BMI, drinking, physician supply, diabetes co-morbidity, age, race/ethnicity, education, income, and others. SUDAAN Multilog models were estimated, and odds ratios tested for coal mining effects. After control for covariates, people in Appalachian coal mining areas reported significantly higher risk of CVD (OR=1.22, 95% CI=1.14-1.30), angina or CHD (OR=1.29, 95% CI=1.19-1.39) and heart attack (OR=1.19, 95% CI=1.10-1.30). Effects were present for both men and women. Cardiovascular diseases have been linked to both air and water contamination in ways consistent with toxicants found in coal and coal processing. Future research is indicated to assess air and water quality in coal mining communities in Appalachia, with corresponding environmental programs and standards established as indicated.

  15. Higher coronary heart disease and heart attack morbidity in Appalachian coal mining regions

    Energy Technology Data Exchange (ETDEWEB)

    Hendryx, M.; Zullig, K.J. [West Virginia University, Morgantown, WV (United States). Dept. of Community Medicine

    2009-11-15

    This study analyzes the U.S. 2006 Behavioral Risk Factor Surveillance System survey data (N = 235,783) to test whether self-reported cardiovascular disease rates are higher in Appalachian coal mining counties compared to other counties after control for other risks. Dependent variables include self-reported measures of ever (1) being diagnosed with cardiovascular disease (CVD) or with a specific form of CVD including (2) stroke, (3) heart attack, or (4) angina or coronary heart disease (CHD). Independent variables included coal mining, smoking, BMI, drinking, physician supply, diabetes co-morbidity, age, race/ethnicity, education, income, and others. SUDAAN Multilog models were estimated, and odds ratios tested for coal mining effects. After control for covariates, people in Appalachian coal mining areas reported significantly higher risk of CVD (OR = 1.22, 95% CI = 1.14-1.30), angina or CHO (OR = 1.29, 95% C1 = 1.19-1.39) and heart attack (OR = 1.19, 95% C1 = 1.10-1.30). Effects were present for both men and women. Cardiovascular diseases have been linked to both air and water contamination in ways consistent with toxicants found in coal and coal processing. Future research is indicated to assess air and water quality in coal mining communities in Appalachia, with corresponding environmental programs and standards established as indicated.

  16. Coal Mining vis-â-vis Agriculture in India: A Question of Sustainability

    Directory of Open Access Journals (Sweden)

    Sribas Goswami

    2015-01-01

    Full Text Available Coal mining adversely affects the eco-system as a whole. It is important to conduct suitable assessment studies to learn the potential adverse impact of mining on agriculture. In the subsequent discussions an attempt has been made to clarify the coal mining activities and its residual impact on environment and agricultural activities.The leaseholds for the underground mines are procured from the land lords who grant mining authority the right for underground coal mining. The land for houses, dwellings and the associated activities are purchased piecemeal from different sources while large portion of the surface right remained under the control of farmers and landlords. Underground mining in these areas is conducted with full responsibility of the surface protection by the operators who normally maintain pillars as the natural support to the surface features. Increasing demand for open caste mining process requires huge land. These lands sometime are acquired at the cost of cultivable land. Coal mining has direct impact over agriculture in the study region and residual impacts of mining bring far reaching consequences. The present study is explanatory in nature based on empirical facts collected from various formal sources from Coal India office. The task is to bring out the issues related to coal mining activities and their impact on vegetation and agriculture in adjoining areas in Raniganj and Jharia coalfields in India through this study.

  17. Biogeochemical interactions between of coal mine water and gas well cement

    Science.gov (United States)

    Gulliver, D. M.; Gardiner, J. B.; Kutchko, B. G.; Hakala, A.; Spaulding, R.; Tkach, M. K.; Ross, D.

    2017-12-01

    Unconventional natural gas wells drilled in Northern Appalachia often pass through abandoned coal mines before reaching the Marcellus or Utica formations. Biogeochemical interactions between coal mine waters and gas well cements have the potential to alter the cement and compromise its sealing integrity. This study investigates the mineralogical, geochemical, and microbial changes of cement cores exposed to natural coal mine waters. Static reactors with Class H Portland cement cores and water samples from an abandoned bituminous Pittsburgh coal mine simulated the cement-fluid interactions at relevant temperature for time periods of 1, 2, 4, and 6 weeks. Fluids were analyzed for cation and anion concentrations and extracted DNA was analyzed by 16S rRNA gene sequencing and shotgun sequencing. Cement core material was evaluated via scanning electron microscope. Results suggest that the sampled coal mine water altered the permeability and matrix mineralogy of the cement cores. Scanning electron microscope images display an increase in mineral precipitates inside the cement matrix over the course of the experiment. Chemistry results from the reaction vessels' effluent waters display decreases in dissolved calcium, iron, silica, chloride, and sulfate. The microbial community decreased in diversity over the 6-week experiment, with Hydrogenophaga emerging as dominant. These results provide insight in the complex microbial-fluid-mineral interactions of these environments. This study begins to characterize the rarely documented biogeochemical impacts that coal waters may have on unconventional gas well integrity.

  18. Lightweight monitoring and control system for coal mine safety using REST style.

    Science.gov (United States)

    Cheng, Bo; Cheng, Xin; Chen, Junliang

    2015-01-01

    The complex environment of a coal mine requires the underground environment, devices and miners to be constantly monitored to ensure safe coal production. However, existing coal mines do not meet these coverage requirements because blind spots occur when using a wired network. In this paper, we develop a Web-based, lightweight remote monitoring and control platform using a wireless sensor network (WSN) with the REST style to collect temperature, humidity and methane concentration data in a coal mine using sensor nodes. This platform also collects information on personnel positions inside the mine. We implement a RESTful application programming interface (API) that provides access to underground sensors and instruments through the Web such that underground coal mine physical devices can be easily interfaced to remote monitoring and control applications. We also implement three different scenarios for Web-based, lightweight remote monitoring and control of coal mine safety and measure and analyze the system performance. Finally, we present the conclusions from this study and discuss future work. Copyright © 2014 ISA. Published by Elsevier Ltd. All rights reserved.

  19. Plant species from coal mine overburden dumping site in Satui, South Kalimantan, Indonesia

    Directory of Open Access Journals (Sweden)

    Vivi Novianti

    2017-07-01

    Full Text Available Coal mine overburden (OB materials were nutrient-poor, loosely adhered particles of shale, stones, boulders, and cobbles, also contained elevated concentration of trace metals. This condition cause OB substrate did not support plants growth. However, there were certain species that able to grow on overburden dumping site. This investigation sought to identify plants species that presence on coal mine overburden. The research was conducted on opencast coal mine OB dumping site in Satui, South Kalimantan. Vegetation sampling was carried out on six different ages of coal mine OB dumps (7, 10, 11, 42, 59 and 64 month using line transect. Species identification used information from local people, AMDAL report of PT Arutmin Indonesia-Satui mine project, and website. There were 123 plant species, consisted of 79 herbs (Cyperaceae, Poaceae and Asteraceae, 10 lianes, bryophyte, 9 ferns, 10 shrubs, and 14 trees. A number of Poaceae, i.e., Paspalumconjugatum, Paspalumdilatatum, and Echinochloacolona generally present among the stones, boulders, and cobbles. While Cyperaceae such as Fimbristylis miliaceae, Cyperus javanicus, Rhyncospora corymbosa and Scleria sumatrensis most often foundinand around thebasin/pond with its smooth and humid substrate characteristics. Certain species of shrubs and trees present on the 7 month OB dumping site. They wereChromolaena odorata, Clibadium surinamense, Melastoma malabathricum, Trema micrantha, and Solanum torvum (Shrubs, Ochroma pyramidale and Homalanthus populifolius (trees. This plant species could be used for accelerating primary succession purpose on coal mine overburden dumping site. Nevertheless, species selection was needed to avoid planting invasive species.

  20. Thermal load at workstations in the underground coal mining: Results of research carried out in 6 coal mines

    Directory of Open Access Journals (Sweden)

    Krzysztof Słota

    2016-08-01

    Full Text Available Background: Statistics shows that almost half of Polish extraction in underground mines takes place at workstations where temperature exceeds 28°C. The number of employees working in such conditions is gradually increasing, therefore, the problem of safety and health protection is still growing. Material and Methods: In the present study we assessed the heat load of employees at different workstations in the mining industry, taking into account current thermal conditions and work costs. The evaluation of energy cost of work was carried out in 6 coal mines. A total of 221 miners employed at different workstations were assessed. Individual groups of miners were characterized and thermal safety of the miners was assessed relying on thermal discomfort index. Results: The results of this study indicate considerable differences in the durations of analyzed work processes at individual workstations. The highest average energy cost was noted during the work performed in the forehead. The lowest value was found in the auxiliary staff. The calculated index of discomfort clearly indicated numerous situations in which the admissible range of thermal load exceeded the parameters of thermal load safe for human health. It should be noted that the values of average labor cost fall within the upper, albeit admissible, limits of thermal load. Conclusions: The results of the study indicate that in some cases work in mining is performed in conditions of thermal discomfort. Due to high variability and complexity of work conditions it becomes necessary to verify the workers’ load at different workstations, which largely depends on the environmental conditions and work organization, as well as on the performance of workers themselves. Med Pr 2016;67(4:477–498

  1. Memorandum of Understanding on Surface Coal Mining Operations Resulting in Placement of Excess Spoil Fills in the Waters of the United States

    Science.gov (United States)

    MOU on Surface Coal Mining Operations establishes a process for improving coordination in the review of permit applications required for surface coal mining and reclamation in waters of the United States

  2. The public health effects of abandoned coal mine workings on residents in South Wellington, Nanaimo

    Energy Technology Data Exchange (ETDEWEB)

    Biagioni, K [Victoria Univ., BC (Canada)

    2005-07-01

    Abandoned coal mine groundwater frequently contains depressed pH levels and elevated levels of hydrogen sulphide, iron, aluminium and nitrates. Abandoned coal mine groundwater is also usually high in copper, zinc, mercury, and lead. Groundwater from abandoned mines can seriously affect public health through the discharge of non-point source pollution. This paper presents information on a research project regarding the possible impacts of abandoned coal mines and its effects on groundwater as it relates to the health of residents in South Wellington, Nanaimo, British Columbia. The purpose of the project is to determine which illnesses are more common in South Wellington, Nanaimo and in the control area. The paper provides a discussion of the Nanaimo coal field and three major seams; the Wellington, Newcastle and Douglas which are most likely to have a significant impact on groundwater in South Wellington. 27 refs.

  3. The public health effects of abandoned coal mine workings on residents in South Wellington, Nanaimo

    International Nuclear Information System (INIS)

    Biagioni, K.

    2005-01-01

    Abandoned coal mine groundwater frequently contains depressed pH levels and elevated levels of hydrogen sulphide, iron, aluminium and nitrates. Abandoned coal mine groundwater is also usually high in copper, zinc, mercury, and lead. Groundwater from abandoned mines can seriously affect public health through the discharge of non-point source pollution. This paper presents information on a research project regarding the possible impacts of abandoned coal mines and its effects on groundwater as it relates to the health of residents in South Wellington, Nanaimo, British Columbia. The purpose of the project is to determine which illnesses are more common in South Wellington, Nanaimo and in the control area. The paper provides a discussion of the Nanaimo coal field and three major seams; the Wellington, Newcastle and Douglas which are most likely to have a significant impact on groundwater in South Wellington. 27 refs

  4. Residence time of contaminants released in surface coal mines -- a wind-tunnel study

    Energy Technology Data Exchange (ETDEWEB)

    Thompson, R.S. [Environmental Protection Agency, Research Triangle Park, NC (United States)

    1994-12-31

    Surface coal mining operations (blasting, shoveling, loading, trucking, etc.) are sources of airborne particles. The 1990 Clean Air Act Amendments direct the EPA to analyze the accuracy of the Industrial Source Complex model and the AP-42 emission factors, and to make revisions as may be necessary to eliminate any significant over-prediction of air concentration of fugitive particles from surface coal mines. A wind-tunnel study was performed at the US EPA`s Fluid Modeling Facility to investigate dispersion from surface coal mines in support of the dispersion modeling activities. Described here is the portion of the study directed at determining the residence time that material released near the floor of a mine will stay within the mine.

  5. The Study of Cross-layer Optimization for Wireless Rechargeable Sensor Networks Implemented in Coal Mines

    Science.gov (United States)

    Ding, Xu; Shi, Lei; Han, Jianghong; Lu, Jingting

    2016-01-01

    Wireless sensor networks deployed in coal mines could help companies provide workers working in coal mines with more qualified working conditions. With the underground information collected by sensor nodes at hand, the underground working conditions could be evaluated more precisely. However, sensor nodes may tend to malfunction due to their limited energy supply. In this paper, we study the cross-layer optimization problem for wireless rechargeable sensor networks implemented in coal mines, of which the energy could be replenished through the newly-brewed wireless energy transfer technique. The main results of this article are two-fold: firstly, we obtain the optimal relay nodes’ placement according to the minimum overall energy consumption criterion through the Lagrange dual problem and KKT conditions; secondly, the optimal strategies for recharging locomotives and wireless sensor networks are acquired by solving a cross-layer optimization problem. The cyclic nature of these strategies is also manifested through simulations in this paper. PMID:26828500

  6. Assessment of pneumoconiosis hazards associated with mining operations in coal mines. [USSR

    Energy Technology Data Exchange (ETDEWEB)

    Sukhanov, V V; Menyailo, N I; Petul' ko, S N

    1984-07-01

    Methods are discussed for evaluating hazards of pneumoconiosis in underground coal mines. Pneumoconiosis hazards are decisively influenced by: content of respirable dusts in mine air at a working place, dust composition, temperature and time of a miner's contact with dusts. The following classification of pneumoconiosis hazards is used in the USSR: low hazards when a miner is endangered by pneumoconiosis after 20 years or more, medium hazards when pneumoconiosis may occur after 10 to 20 years, high pneumoconiosis hazards when a miner is endangered by pneumoconiosis after less than 10 years of contact with dusts. High air temperature in deep coal mines increases pneumoconiosis hazards: when temperature exceeds 26 C a temperature increase of 1 C causes a 10% increase in dust chemical activity. Safety standards which describe the maximum permissible dust level in coal mine air in the USSR, the FRG, France and Poland are compared.

  7. Gas migration from closed coal mines to the surface. Risk assessment methodology and prevention means

    International Nuclear Information System (INIS)

    Pokryszka, Z.; Tauziede, Ch.; Lagny, C.; Guise, Y.; Gobillot, R.; Planchenault, J.M.; Lagarde, R.

    2005-01-01

    French law as regards renunciation to mining concessions calls for the mining operator to first undertake analyses of the risks represented by their underground mining works. The problem of gas migration to the surface is especially significant in the context of coal mines. This is because mine gas can migrate to the earth's surface, then present significant risks: explosion, suffocation or gas poisoning risks. As part of the scheduled closure of all coal mining operations in France, INERIS has drawn up, at the request of national mining operator Charbonnages de France, a general methodology for assessing the risk linked to gas in the context of closed coal mines. This article presents the principles of this methodology. An application example based on a true case study is then described. This is completed by a presentation of the preventive and monitoring resources recommended and usually applied in order to manage the risk linked to gaseous emissions. (authors)

  8. 76 FR 11187 - Examinations of Work Areas in Underground Coal Mines for Violations of Mandatory Health or Safety...

    Science.gov (United States)

    2011-03-01

    ... DEPARTMENT OF LABOR Mine Safety and Health Administration 30 CFR Part 75 RIN 1219-AB75 Examinations of Work Areas in Underground Coal Mines for Violations of Mandatory Health or Safety Standards... rule addressing Examinations of Work Areas in Underground Coal Mines for Violations of Mandatory Health...

  9. Conceptual development of a method to determine the principal stresses around coal mine workings to ensure safe mine design

    CSIR Research Space (South Africa)

    Coetzer, S

    1997-06-01

    Full Text Available The objective of this project is to identify or to develop methods or procedures for the determination of the principal stresses in coal mine workings, which in turn would provide improved criteria for mine design layouts in coal mines. To address...

  10. 30 CFR 761.15 - Procedures for waiving the prohibition on surface coal mining operations within the buffer zone...

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 3 2010-07-01 2010-07-01 false Procedures for waiving the prohibition on surface coal mining operations within the buffer zone of an occupied dwelling. 761.15 Section 761.15... surface coal mining operations within the buffer zone of an occupied dwelling. (a) This section does not...

  11. Export of detritus and invertebrate from headwater streams: linking mountaintop removal and valley fill coal mining to downstream receiving waters

    Science.gov (United States)

    Mountaintop removal and valley fill (MTR/VF) coal mining has resulted in large scale alteration of the topography, reduced forest productivity, and burial of headwater streams in the U.S. Central Appalachians. Although MTR/VF coal mining has occurred for several decades and the ...

  12. Adult tooth loss for residents of US coal mining and Appalachian counties.

    Science.gov (United States)

    Hendryx, Michael; Ducatman, Alan M; Zullig, Keith J; Ahern, Melissa M; Crout, Richard

    2012-12-01

    The authors compared rates of tooth loss between adult residents of Appalachian coal-mining areas and other areas of the nation before and after control for covariate risks. The authors conducted a cross-sectional secondary data analysis that merged 2006 national Behavioral Risk Factor Surveillance System data (BRFSS) (N = 242 184) with county coal-mining data and other county characteristics. The hypothesis tested was that adult tooth loss would be greater in Appalachian mining areas after control for other risks. Primary independent variables included main effects for coal-mining present (yes/no) residence in Appalachia (yes/no), and their interaction. Data were weighted using the BRFSS final weights and analyzed using SUDAAN Proc Multilog to account for the multilevel complex sampling structure. The odds of two measures of tooth loss were examined controlling for age, race\\ethnicity, drinking, smoking, income, education, supply of dentists, receipt of dental care, fluoridation rate, and other variables. After covariate adjustment, the interaction variable for the residents of Appalachian coal-mining counties showed a significantly elevated odds for any tooth loss [odds ratio (OR) = 1.19, 95% CI = 1.02, 1.38], and greater tooth loss measured by a 4-level edentulism scale (OR = 1.20, 95% CI = 1.05, 1.36). The main effect for Appalachia was also significant for both measures, but the main effect for coal mining was not. Greater risk of tooth loss among adult residents of Appalachian coal-mining areas is present and is not explained by differences in reported receipt of dental care, fluoridation rates, supply of dentists or other behavioral or socioeconomic risks. Possible contributing factors include mining-specific disparities related to access, behavior or environmental exposures. © 2012 John Wiley & Sons A/S.

  13. PROBLEMY I PERSPEKTIVY ISPOL'ZOVANIYA SHAKHTNOGO METANA [PROBLEMS AND PROSPECTS OF COAL MINE METHANE

    Directory of Open Access Journals (Sweden)

    Mogileva Ye.M.

    2017-09-01

    Full Text Available The use of coal mine methane ensures the implementation of the principle of integrated development of the deposit. The urgency of the problem of coal mine methane is determined by the fact that the Presidential Decree of September 30, 2013 № 752 "On the reduction of greenhouse gas emissions" is to bring to the 2020 decrease in emissions. The article substantiates the necessity of cardinal growth of the volumes of utilization of mine methane, as well as the strengthening of the role of degassing methods. The main reasons for the low level of utilization in the Russian Federation are noted. The main directions of using coal mine methane at present are considered, among which are: heat generation (fuel in boilers and other heat generators; generation of electricity (fuel for diesel engines of alternators; fuel for motor vehicles; raw materials for the chemical industry. The analysis of the main methods of utilization of methane-air mixtures is presented. Three perspective technologies for recycling methane from the ventilation streams of coal mines to the atmosphere are singled out: a thermal reactor with reversible flows "VOCSIDIZER", developed by MEGTEC Systems; a thermal reactor with reversible flows "VAMOX", developed by the company "Biothermica Technologies Inc."; a catalytic reversible reactor developed by Canadian Mineral and Energy Technologies. International practice shows that the implementation of projects for the utilization of coal mine methane, as a rule, requires the economic stimulation of such works. The article gives the main incentives and identifies the main directions for solving the problem of coal mine methane utilization.

  14. From explosions to black lung: a history of efforts to control coal mine dust.

    Science.gov (United States)

    Weeks, J L

    1993-01-01

    Highlights in the history of efforts to prevent occupational lung disease among coal miners in the United States are reviewed. The Federal Coal Mine Health and Safety Act of 1969 is summarized, and the sources and effects of its provisions to prevent coal workers' pneumoconiosis are examined. Descriptions follow of the identification of coal workers' pneumoconiosis as a disease, identification of respirable coal mine dust as its cause, and establishment and enforcement of an exposure limit. The development of prevention efforts focusing on surveillance of both exposure and outcome and of enforcement of dust control methods is examined.

  15. Recent advances in remote coal mining machine sensing, guidance, and teleoperation

    Energy Technology Data Exchange (ETDEWEB)

    Ralston, J C; Hainsworth, D W; Reid, D C; Anderson, D L; McPhee, R J [CSIRO Exploration & Minerals, Kenmore, Qld. (Australia)

    2001-10-01

    Some recent applications of sensing, guidance and telerobotic technology in the coal mining industry are presented. Of special interest is the development of semi or fully autonomous systems to provide remote guidance and communications for coal mining equipment. The use of radar and inertial based sensors are considered in an attempt to solve the horizontal and lateral guidance problems associated with mining equipment automation. Also described is a novel teleoperated robot vehicle with unique communications capabilities, called the Numbat, which is used in underground mine safety and reconnaissance missions.

  16. Safety explosives in coal mining. Explosivos de seguridad en la mineria de carbon

    Energy Technology Data Exchange (ETDEWEB)

    (Union Espanola de Explosivos y Rio Blast, S.A., Madrid (Spain))

    1990-06-01

    The use of explosives in underground coal mining is essential for two reasons. The first is the highly resistant nature of the rock surrounding coal which requires explosives to remove it during development work. The second is that certain types of coal need to be blasted in order to achieve a higher output in coal winning operations. This article examines the characteristics, the types and the conditions under which safety or ion exchange explosives are used in underground coal mines where explosive atmospheres are sometimes encountered. 3 tabs. 2 pts.

  17. Coal mining, social injustice and health: a universal conflict of power and priorities.

    Science.gov (United States)

    Morrice, Emily; Colagiuri, Ruth

    2013-01-01

    Given the current insatiable demand for coal to build and fuel the world's burgeoning cities the debate about mining-related social, environmental and health injustices remains eminently salient. Furthermore, the core issues appear universally consistent. This paper combines the theoretical base for defining these injustices with reports in the international health literature about the impact of coal mining on local communities. It explores and analyses mechanisms of coal mining related injustice, conflicting priorities and power asymmetries between political and industry interests versus inhabitants of mining communities, and asks what would be required for considerations of health to take precedence over wealth. Copyright © 2012 Elsevier Ltd. All rights reserved.

  18. Coal mining in the power industry of the Federal Republic of Germany in 2000; Der Kohlenbergbau in der Energiewirtschaft der Bundesrepublik Deutschland im Jahre 2000

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    After an introductory text divided into the sections energy and coal market, coal mining and brown coal mining, extensive tables containing the most important characteristic figures of German coal mining are shown. [German] Nach einem einfuehrenden Text, der in die Abschnitte Energie- und Kohlenmarkt, Steinkohlenbergbau und Braunkohlenbergbau gegliedert ist, wird ein umfangreiches Tabellenmaterial vorgelegt, das die wichtigsten Kennzahlen des deutschen Kohlenbergbaus enthaelt.

  19. Coal mining situation in the Federal Republic of Germany. Year 2016; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. Jahr 2016

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2017-03-03

    The paper reports on the coal mining in the Federal Republic of Germany in the year 2016. Statistical data are presented for coal market, brown coal mining as well as the hard coal mining. These data consider the supply and demand of coal in Germany, and employees of the German coal industry.

  20. Situation of coal mining in the Federal Republic of Germany. Year 2014; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. Jahr 2014

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2015-03-10

    The paper reports on the coal mining in the Federal Republic of Germany in the year 2014. Statistical data are presented for coal market, brown coal mining as well as the hard coal mining. These data consider the supply and demand of coal in Germany, and employees of the German coal industry.

  1. Coal mining situation in the Federal Republic of Germany. Year 2015; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. Jahr 2015

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2016-03-08

    The paper reports on the coal mining in the Federal Republic of Germany in the year 2015. Statistical data are presented for coal market, brown coal mining as well as the hard coal mining. These data consider the supply and demand of coal in Germany, and employees of the German coal industry.

  2. Coal mining situation in the Federal Republic of Germany. Year 2017; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. Jahr 2017

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2018-03-12

    The paper reports on the coal mining in the Federal Republic of Germany in the year 2017. Statistical data are presented for coal market, brown coal mining as well as the hard coal mining. These data consider the supply and demand of coal in Germany, and employees of the German coal industry.

  3. Coal mining in the power industry of the Federal Republic of Germany in 2010; Der Kohlenbergbau in der Energiewirtschaft der Bundesrepublik Deutschland im Jahre 2010

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-11-15

    The contribution under consideration reports on the coal mining in the Federal Republic of Germany in the year 2010. Statistical data are presented for the power market and coal market, brown coal mining as well as the hard coal mining. These data consider the energy consumption in Germany, power production, iron and steel production, utilization, re-cultivation and employees.

  4. Coal mining in the power industry of the Federal Republic of Germany in 1998; Der Kohlenbergbau in der Energiewirtschaft der Bundesrepublik Deutschland im Jahre 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-11-01

    After an introductory text divided into the sections energy and coal market, coal mining and brown coal mining, extensive tables containing the most important characteristic figures of German coal mining are shown. (orig.) [German] Nach einem einfuehrenden Text, der in die Abschnitte Energie- und Kohlenmarkt, Steinkohlenbergbau und Braunkohlenbergbau gegliedert ist, wird ein umfangreiches Tabellenmaterial vorgelegt, das die wichtigsten Kennzahlen des deutschen Kohlenbergbaus enthaelt. (orig.)

  5. Coal mining in the power industry of the Federal Republic of Germany in 2013; Der Kohlenbergbau in der Energiewirtschaft der Bundesrepublik Deutschland im Jahre 2013

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2014-11-15

    The contribution under consideration reports on the coal mining in the Federal Republic of Germany in the year 2013. Statistical data are presented for the power market and coal market, hard coal mining as well as the brown coal mining. These data consider the energy consumption in Germany, power production, iron and steel production, utilization, re-cultivation and employees.

  6. Coal mining in the power industry of the Federal Republic of Germany in 2014; Der Kohlenbergbau in der Energiewirtschaft der Bundesrepublik Deutschland im Jahre 2014

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2015-11-15

    The contribution under consideration reports on the coal mining in the Federal Republic of Germany in the year 2014. Statistical data are presented for the power market and coal market, hard coal mining as well as the brown coal mining. These data consider the energy consumption in Germany, power production, iron and steel production, utilization, re-cultivation and employees.

  7. Coal mining in the power industry of the Federal Republic of Germany in 2016; Der Kohlenbergbau in der Energiewirtschaft der Bundesrepublik Deutschland im Jahre 2016

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2017-11-15

    The contribution under consideration reports on the coal mining in the Federal Republic of Germany in the year 2016. Statistical data are presented for the power market and coal market, hard coal mining as well as the brown coal mining. These data consider the energy consumption in Germany, power production, iron and steel production, utilization, re-cultivation and employees.

  8. Coal mining in the power industry of the Federal Republic of Germany in 2015; Der Kohlenbergbau in der Energiewirtschaft der Bundesrepublik Deutschland im Jahre 2015

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2016-11-15

    The contribution under consideration reports on the coal mining in the Federal Republic of Germany in the year 2015. Statistical data are presented for the power market and coal market, hard coal mining as well as the brown coal mining. These data consider the energy consumption in Germany, power production, iron and steel production, utilization, re-cultivation and employees.

  9. 30 CFR 77.306 - Fire protection.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Fire protection. 77.306 Section 77.306 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR COAL MINE SAFETY AND HEALTH MANDATORY....306 Fire protection. Based on the need for fire protection measures in connection with the particular...

  10. Monitoring coal mine changes and their impact on landscape patterns in an alpine region: a case study of the Muli coal mine in the Qinghai-Tibet Plateau.

    Science.gov (United States)

    Qian, Dawen; Yan, Changzhen; Xing, Zanpin; Xiu, Lina

    2017-10-14

    The Muli coal mine is the largest open-cast coal mine in the Qinghai-Tibet Plateau, and it consists of two independent mining sites named Juhugeng and Jiangcang. It has received much attention due to the ecological problems caused by rapid expansion in recent years. The objective of this paper was to monitor the mining area and its surrounding land cover over the period 1976-2016 utilizing Landsat images, and the network structure of land cover changes was determined to visualize the relationships and pattern of the mining-induced land cover changes. In addition, the responses of the surrounding landscape pattern were analysed by constructing gradient transects. The results show that the mining area was increasing in size, especially after 2000 (increased by 71.68 km 2 ), and this caused shrinkage of the surrounding lands, including alpine meadow wetland (53.44 km 2 ), alpine meadow (6.28 km 2 ) and water (6.24 km 2 ). The network structure of the mining area revealed the changes in lands surrounding the mining area. The impact of mining development on landscape patterns was mainly distributed within a range of 1-6 km. Alpine meadow wetland was most affected in Juhugeng, while alpine meadow was most affected in Jiangcang. The results of this study provide a reference for the ecological assessment and restoration of the Muli coal mine land.

  11. 100 years of the main mine rescue service. A contribution to the protection against disasters in the coal mining industry; 100 Jahre Hauptstelle fuer das Grubenrettungswesen. Ein Beitrag zum Katastrophenschutz im Steinkohlenbergbau

    Energy Technology Data Exchange (ETDEWEB)

    Hermuelheim, Walter [RAG Aktiengesellschaft, Herne (Germany). Zentralbereich Arbeits-, Gesundheits- und Umweltschutz

    2011-06-15

    A review of 100 years of protection against disasters in the coal mining industry impressively shows the way from an era of major accidents to a modern branch of industry, which justifiably and with good prospects of success can pursue the aim of ''No accidents - no damage to health - no damage to the environment''. However, the development of the mine rescue service over more than 100 years - represented in the Ruhr by the Main Mine Rescue Service established in 1910 in Essen - would be incomplete without consideration of the allied technical fields underground fire protection and explosion protection. Cooperation between institutions such as the Tremonia test mine and the BVG has produced a safety level in all three fields, which is regarded as exemplary worldwide, and in addition to the latest mining technology is a good advertisement for the German coal mining industry. (orig.)

  12. Eco-restoration of a high-sulphur coal mine overburden dumping ...

    Indian Academy of Sciences (India)

    top bracket of environmental degradation (Chaoji. 2002), and coal mining is being considered for inclusion under the national superfund scheme. The chief environmental impacts due to mining are changes in soil stratification, reduced biotic diver- sity, and alteration of structure and functioning of ecosystems; these ...

  13. Selective bibliography of surface coal mining and reclamation literature. Volume 2. Interior Coal Province

    Energy Technology Data Exchange (ETDEWEB)

    Patricoski, M. L.; Daniels, L. K.; Sobek, A. A.

    1979-08-01

    This bibliography has been compiled for use by researchers, students, and other groups who need a reference source of published literature related to surface coal mining and reclamation in the Interior Coal Province. This bibliography contains more than 1300 references, including government reports, journal articles, symposium proceedings, industrial reports, workshop proceedings, theses, and bibliographies. A simple format was used to categorize citations.

  14. The South Manchurian Railway Company and the Mining Industry: The Case of the Fushun Coal Mine

    Directory of Open Access Journals (Sweden)

    Tsu-yu Chen

    2015-09-01

    Full Text Available Following the Japanese victory over Czarist Russia in the Russo-Japanese War and the signing of the Treaty of Portsmouth in 1905, the southernmost section of the southern branch of the China Far East Railway (Changchun–Port Arthur was transferred to Japanese control. A new, semi-privately held company, the South Manchuria Railway Company (SMR, Mantetsu, was established with 85.6 percent capitalization by the Japanese government and foreign bonds to operate the railroad and to develop settlements (including highways, public health facilities, educational institutions, and industries (coal mines, harbor facilities, electrical power plants, shale oil plants, chemical plants, and restaurants along its route. SMR nonetheless emphasized railway and mining investment. The centerpiece of its mining interests was the Fushun Coal Mine. Starting in 1917, SMR began to prosper, with most profits coming from its coal mines, and it soon spun off subsidiary companies. In this sense, although the factors that influenced development of the Fushun Coal Mine in each period were different, this development still shows continuity of the business management.

  15. Investigate the causes of transport and tramming accidents on coal mines.

    CSIR Research Space (South Africa)

    Rushworth, AM

    1999-03-01

    Full Text Available Transport and tramming accidents on coal mines in South Africa are a major component in the overall pattern of colliery accidents. Furthermore, there is now a widespread acceptance that human error is a common cause of failure in accident patterns...

  16. Screening of metal-resistant coal mine bacteria for biofabrication of ...

    Indian Academy of Sciences (India)

    Additionally, IR study provided information about the bacterial proteins involved in either reduction of Ag(I) into silver nanoparticle or capping of reduced silver nanocrystal or both.Thus, majority of the bacteria found in the coal mines have the resistance against the antimicrobial metal ion, and the potential to reduce the ion ...

  17. 75 FR 64411 - Lowering Miners' Exposure to Respirable Coal Mine Dust, Including Continuous Personal Dust Monitors

    Science.gov (United States)

    2010-10-19

    ... industries, such as mining, by reducing workplace deaths and improving the health of coal miners. This..., enhanced enforcement, collaborative outreach, and education and training. The initiative will reduce, and... reducing the respirable coal mine dust levels, miners continue to develop black lung. Based on recent data...

  18. The natural radioactivity in vicinity of the brown coal mine Tusnica - Livno, BiH

    International Nuclear Information System (INIS)

    Saracevic, L.; Samek, D.; Mihalj, A.; Gradascevic, N.

    2009-01-01

    Coal mine Tusnica is located in South-West part of Bosnia and Herzegovina in the municipality Livno. Coal mine Tusnica consists of two surface coal mines. The first one is brown coal surface deposit called Drage and second one is lignite deposit called Table. The brown coal deposit shows increased levels of natural radionuclides. The highest absorbed dose rate is recorded in the center of the surface coal mine Tusnica-Drage (500 nGy h -1 ) as result of the increased content of uranium and radium in coal (average specific activity of U-238 is 623 ± 23 Bq kg -1 and Ra-226 is 1191 ± 5 Bq kg -1 ). Levels of natural radionuclides in the vicinity of the surface deposit Drage in agricultural soil (about 3 km of the centre mine) are slightly increased due to the use of the coal ash and coal dust for fertilization of the land (U-238 is 142 ± 11 Bq kg -1 and Ra-226 is 197 ± 2 Bq kg -1 ). Obtained results in soil-plant-animal products chain does not show significantly increased levels of natural radionuclides due to the fact that mentioned radionuclides, in general, have a low transfer factors in soil-plant-animal products chain. (author)

  19. VRLane: a desktop virtual safety management program for underground coal mine

    Science.gov (United States)

    Li, Mei; Chen, Jingzhu; Xiong, Wei; Zhang, Pengpeng; Wu, Daozheng

    2008-10-01

    VR technologies, which generate immersive, interactive, and three-dimensional (3D) environments, are seldom applied to coal mine safety work management. In this paper, a new method that combined the VR technologies with underground mine safety management system was explored. A desktop virtual safety management program for underground coal mine, called VRLane, was developed. The paper mainly concerned about the current research advance in VR, system design, key techniques and system application. Two important techniques were introduced in the paper. Firstly, an algorithm was designed and implemented, with which the 3D laneway models and equipment models can be built on the basis of the latest mine 2D drawings automatically, whereas common VR programs established 3D environment by using 3DS Max or the other 3D modeling software packages with which laneway models were built manually and laboriously. Secondly, VRLane realized system integration with underground industrial automation. VRLane not only described a realistic 3D laneway environment, but also described the status of the coal mining, with functions of displaying the run states and related parameters of equipment, per-alarming the abnormal mining events, and animating mine cars, mine workers, or long-wall shearers. The system, with advantages of cheap, dynamic, easy to maintenance, provided a useful tool for safety production management in coal mine.

  20. Long-hole destress blasting for rockburst control during deep underground coal mining

    Czech Academy of Sciences Publication Activity Database

    Koníček, Petr; Souček, Kamil; Staš, Lubomír; Singh, R.

    -, č. 61 (2013), s. 141-153 ISSN 1365-1609 R&D Projects: GA MŠk ED2.1.00/03.0082 Institutional support: RVO:68145535 Keywords : Ostrava - Karvina Coal basin * longwall mining * rockbursts * destress blasting Subject RIV: DH - Mining, incl. Coal Mining Impact factor: 1.424, year: 2013 http://www.sciencedirect.com/science/article/pii/S1365160913000348

  1. A Wireless LAN and Voice Information System for Underground Coal Mine

    Directory of Open Access Journals (Sweden)

    Yu Zhang

    2014-06-01

    Full Text Available In this paper we constructed a wireless information system, and developed a wireless voice communication subsystem based on Wireless Local Area Networks (WLAN for underground coal mine, which employs Voice over IP (VoIP technology and Session Initiation Protocol (SIP to achieve wireless voice dispatching communications. The master control voice dispatching interface and call terminal software are also developed on the WLAN ground server side to manage and implement the voice dispatching communication. A testing system for voice communication was constructed in tunnels of an underground coal mine, which was used to actually test the wireless voice communication subsystem via a network analysis tool, named Clear Sight Analyzer. In tests, the actual flow charts of registration, call establishment and call removal were analyzed by capturing call signaling of SIP terminals, and the key performance indicators were evaluated in coal mine, including average subjective value of voice quality, packet loss rate, delay jitter, disorder packet transmission and end-to- end delay. Experimental results and analysis demonstrate that the wireless voice communication subsystem developed communicates well in underground coal mine environment, achieving the designed function of voice dispatching communication.

  2. Developments in the application of underground battery vehicles in the UK coal mining industry

    Energy Technology Data Exchange (ETDEWEB)

    Fortune, J A.B.; Crawshaw, S A.M. [Long-Airdox International Ltd. (United Kingdom)

    1996-10-01

    Trackless battery powered haulage vehicles have been in operation in British coal mines principally for longwall face transfer and personnel transportation. Changes within the industry have resulted in the introduction of room and pillar coal mining methods and the introduction of increasingly heavier longwall roof supports. This has resulted in the introduction of: battery powered coal haulage machines, which, without the need for trailing cables, increase productivity within room and pillar mining; and battery powered longwall shield haulers which are capable of carrying the heaviest shield supports currently being utilised within the British coal mining industry. The conventional machines have been adapted from an American design to meet the requirements of European legislation. This has seen the emphasis being placed upon the supplier with the European Machinery Directive being introduced, necessitating the assigning of a `CE` mark to each vehicle. Battery vehicle technology has advanced to meet the demands of the ever changing market and will no doubt be further adapted to meet the requirement of the British coal mining industry. 1 ref., 12 figs., 3 tabs.

  3. [Soil organic pollution characteristics and microbial properties in coal mining areas of Mentougou].

    Science.gov (United States)

    Jia, Jian-Li; Zhang, Yue; Wang, Chen; Li, Dong; Liu, Bo-Wen; Liu, Ying; Zhao, Le; Yang, Si-Qi

    2011-03-01

    Soil micro-ecosystem including organic pollution characteristics, basic physicochemical parameters, and microbial properties was analyzed which contaminated with organic pollutants in coal mining area. Results showed that the organic pollution level in coal mining area soils distributed from 0.4 to 1.5 mg/g dry soil, which was 1. 5-6 times as much as the background sample. Furthermore, the column chromatography and GC-MS analysis revealed that content of lightly components including saturated and aromatic hydrocarbons exceeded 40%, specifically was alkenes (> C15), hydrocarbon derivatives, and a small amount aromatic hydrocarbons. Totally, the components of organic pollutants extracted in soils were similar to which in coal gangue samples, illustrating the source of soil pollution to a certain extent in coal mining areas. The physicochemical factors such as nutrient level and moisture contents were not conducive to the growth and reproduction of microbe except pH level, which might show inhibition to microbial activities. Microbial density of pollutant soils in coal mining areas was totally low, with specific amount 10(4)-10(5) cell/g dry soil and FDA activity 2.0-2.9 mg/(g x min). Generally, the microbial density and activity were decreased as the enhancing pollution level. However, in-depth analysis was needed urgently because of the complex impact of environmental conditions like pH, moisture, and nutrition.

  4. Monitoring Metal Pollution Levels in Mine Wastes around a Coal Mine Site Using GIS

    Science.gov (United States)

    Sanliyuksel Yucel, D.; Yucel, M. A.; Ileri, B.

    2017-11-01

    In this case study, metal pollution levels in mine wastes at a coal mine site in Etili coal mine (Can coal basin, NW Turkey) are evaluated using geographical information system (GIS) tools. Etili coal mine was operated since the 1980s as an open pit. Acid mine drainage is the main environmental problem around the coal mine. The main environmental contamination source is mine wastes stored around the mine site. Mine wastes were dumped over an extensive area along the riverbeds, and are now abandoned. Mine waste samples were homogenously taken at 10 locations within the sampling area of 102.33 ha. The paste pH and electrical conductivity values of mine wastes ranged from 2.87 to 4.17 and 432 to 2430 μS/cm, respectively. Maximum Al, Fe, Mn, Pb, Zn and Ni concentrations of wastes were measured as 109300, 70600, 309.86, 115.2, 38 and 5.3 mg/kg, respectively. The Al, Fe and Pb concentrations of mine wastes are higher than world surface rock average values. The geochemical analysis results from the study area were presented in the form of maps. The GIS based environmental database will serve as a reference study for our future work.

  5. Cavities as the sources of acid mine process in the Niwka-Modrzejow Coal Mine (poland)

    International Nuclear Information System (INIS)

    Pluta, I.; Mazurkiewicz, M.

    2005-01-01

    Acid mine process is one of the most significant sources the pollution of surface water. The intensive process was discovered in the Niwka-Modrzejow Coal Mine at the level 100-130 m. In this paper the method of prevention by the filling cavities of wastes from energy plants was proposed. (authors)

  6. 77 FR 62266 - Proposed Extension of Existing Information Collection; Daily Inspection of Surface Coal Mines...

    Science.gov (United States)

    2012-10-12

    ... conducting an on shift examination for hazardous conditions, mine operators better ensure a safe working environment for the miners and a reduction in accidents. II. Desired Focus of Comments The Mine Safety and... (30 CFR 77.1713) requires coal mine operators to conduct examinations of each active working area of...

  7. Soil preparation methods promoting ectomycorrhizal colonization and American chestnut Castanea dentata establishment in coal mine restoration

    Science.gov (United States)

    Jenise M. Bauman; Carolyn H. Keiffer; Shiv Hiremath; Brian C. McCarthy

    2013-01-01

    The objective of this research was to evaluate soil subsurface methods that may aid in seedling establishment and encourage root colonization from a diverse group of ectomycorrhizal (ECM) fungi during restoration projects. American chestnut Castanea dentata Marsh. Borkh. and backcrossed chestnuts seedlings were planted on a reclaimed coal mine site...

  8. 76 FR 24918 - Division of Coal Mine Workers' Compensation Proposed Renewal of Existing Collection; Comment Request

    Science.gov (United States)

    2011-05-03

    ... concerning the proposed collection: Miner's Claim for Benefits under the Black Lung Benefits Act (CM-911) and... Coal Mine Workers' Compensation administers the Black Lung Benefits Act (30 U.S.C. 901 et seq.), which... miner who applies for black lung benefits must complete the CM-911 (application form). The completed...

  9. 75 FR 51488 - Division of Coal Mine Workers' Compensation; Proposed Extension of Information Collection...

    Science.gov (United States)

    2010-08-20

    ... order to carry out its responsibility to administer the Black Lung Benefits Act. Agency: Office of...). SUPPLEMENTARY INFORMATION: I. Background: The Division of Coal Mine Workers' Compensation administers the Black Lung Benefits Act (30 U.S.C. 901 et seq.), which provides benefits to coal miners totally disabled due...

  10. MONITORING METAL POLLUTION LEVELS IN MINE WASTES AROUND A COAL MINE SITE USING GIS

    Directory of Open Access Journals (Sweden)

    D. Sanliyuksel Yucel

    2017-11-01

    Full Text Available In this case study, metal pollution levels in mine wastes at a coal mine site in Etili coal mine (Can coal basin, NW Turkey are evaluated using geographical information system (GIS tools. Etili coal mine was operated since the 1980s as an open pit. Acid mine drainage is the main environmental problem around the coal mine. The main environmental contamination source is mine wastes stored around the mine site. Mine wastes were dumped over an extensive area along the riverbeds, and are now abandoned. Mine waste samples were homogenously taken at 10 locations within the sampling area of 102.33 ha. The paste pH and electrical conductivity values of mine wastes ranged from 2.87 to 4.17 and 432 to 2430 μS/cm, respectively. Maximum Al, Fe, Mn, Pb, Zn and Ni concentrations of wastes were measured as 109300, 70600, 309.86, 115.2, 38 and 5.3 mg/kg, respectively. The Al, Fe and Pb concentrations of mine wastes are higher than world surface rock average values. The geochemical analysis results from the study area were presented in the form of maps. The GIS based environmental database will serve as a reference study for our future work.

  11. Development of an extended shift exposure limit adjustment factor for coal mine dusts

    Energy Technology Data Exchange (ETDEWEB)

    Tiernan, G; Van Zanten, D [SIMTARS (Australia)

    1999-12-31

    Four models for adjusting exposure standards for use during altered work shifts are reviewed. These are the absorbed dose adjustment model; the Brief and Scala model; the US Occupational Safety and Health Administration (OSHA) model; and the pharmacokinetic models of Hockey and Reist and of Stan Roach. The most appropriate model is selected for control of coal mine dusts exposure. 14 refs., 3 tabs.

  12. Public drinking water violations in mountaintop coal mining areas of West Virginia, USA

    Science.gov (United States)

    Mountaintop coal mining (MTM) has adverse impacts on surface and ground water quality. Instances of domestic well water contamination from mining activities have been documented, but possible mining impacts on public water treatment systems are unknown. We analyzed the U.S. Envir...

  13. Systems to limit coal dust and methane explosions in coal mines.

    CSIR Research Space (South Africa)

    Du Plessis, JJL

    1997-01-01

    Full Text Available In response to the need for enhanced precautionary measures to safeguard mine workers in collieries from the consequences of methane ignitions in a heading, the coal mining industry has expressed the desire for the development and testing of active...

  14. 77 FR 25205 - Proposed Extension of Existing Information Collection; Roof Control Plans for Underground Coal Mines

    Science.gov (United States)

    2012-04-27

    ... collections of information in accordance with the Paperwork Reduction Act of 1995. This program helps to assure that requested data can be provided in the desired format, reporting burden (time and financial... Information Collection; Roof Control Plans for Underground Coal Mines AGENCY: Mine Safety and Health...

  15. The Increase of Power Efficiency of Underground Coal Mining by the Forecasting of Electric Power Consumption

    Science.gov (United States)

    Efremenko, Vladimir; Belyaevsky, Roman; Skrebneva, Evgeniya

    2017-11-01

    In article the analysis of electric power consumption and problems of power saving on coal mines are considered. Nowadays the share of conditionally constant costs of electric power for providing safe working conditions underground on coal mines is big. Therefore, the power efficiency of underground coal mining depends on electric power expense of the main technological processes and size of conditionally constant costs. The important direction of increase of power efficiency of coal mining is forecasting of a power consumption and monitoring of electric power expense. One of the main approaches to reducing of electric power costs is increase in accuracy of the enterprise demand in the wholesale electric power market. It is offered to use artificial neural networks to forecasting of day-ahead power consumption with hourly breakdown. At the same time use of neural and indistinct (hybrid) systems on the principles of fuzzy logic, neural networks and genetic algorithms is more preferable. This model allows to do exact short-term forecasts at a small array of input data. A set of the input parameters characterizing mining-and-geological and technological features of the enterprise is offered.

  16. Application of the coal-mining waste in building ceramics production

    Directory of Open Access Journals (Sweden)

    Vaysman Yakov Iosifovich

    Full Text Available In the process of construction ceramics production a substantial quantity of non-renewable natural resources - clays - are used. One of the ways of science development in building materials production is investigation of the possibility of regular materials production using technogenic waste. Application of coal-mining waste (technogenic raw material in charge composition for production of ceramic products provides rational use of fuel, contributes to implementation of resource saving technologies on construction materials production enterprises. Though science development on revealing new raw material sources should be conducted with account for safety, reliability, technical, ecological and economical sides of the problem, which is especially current. The article deals with the problem of coal-mining waste usage in building ceramics production instead of fresh primary component (clay, fluxes, thinning agents and combustible additives. The interdependence between the density and shrinkage of the ceramic products and the amount and quality of coal-mining waste in its composition was established. The optimal proportion of coal-mining waste and clay in building ceramics production was estimated.

  17. 30 CFR 942.800 - Bond and insurance requirements for surface coal mining and reclamation operations.

    Science.gov (United States)

    2010-07-01

    ... required for postmining water treatment must remain bonded. However, the trust fund or annuity may serve as... coal mining and reclamation operations. 942.800 Section 942.800 Mineral Resources OFFICE OF SURFACE MINING RECLAMATION AND ENFORCEMENT, DEPARTMENT OF THE INTERIOR PROGRAMS FOR THE CONDUCT OF SURFACE MINING...

  18. Technique of complex slime water treatment of coal-mining branch

    OpenAIRE

    Solodov, G. А.; Zhbyr, Е. V.; Papin, А. V.; Nevedrov, А. V.

    2007-01-01

    The possibility of complex slime water treatment at coal-mining and coal-treating plants producing marketable products: power-generating concentrate, coal-water fuel, magnetic fraction, industrial water is shown. A basic process flowsheet of slime water treatment presenting a united technological complex is suggested.

  19. Concentrated Brine Treatment using New Energy in Coal Mine Evaporation Ponds

    Science.gov (United States)

    Li, Ting; Li, Jingfeng

    2017-12-01

    Recently, more and more coal mine water is being advanced treated and reused in China. The concentrated brine that results from advanced treatment methods can only be evaporated in an evaporation pond. Because of limited treatment capabilities and winter freezing, evaporation ponds often overflow, causing environment contamination. In this paper, based on analysis of brine water quality and economic-technical feasibility, we present a suitable treatment method for brine in evaporation ponds as electrodialysis using solar energy. In addition, we propose a new system to treat brine in coal mine evaporation ponds, which is powered by solar and wind. The operating efficiency of this treatment system proposed in this paper can meet the concentrated brine treatment demands in most coal mines in western mining areas of China and it places the photovoltaic power generation plates on the surface of the evaporation pond on a fixed floating island, which reduces any risk associated with land acquisition. This system can enhance brine treatment efficiency, requires a reduced evaporation pond area, increases the utilization of coal mine water, and minimizes the risk of environment contamination.

  20. Study on structuring the supervision system of coal mine associated with radionuclides in Xinjiang

    International Nuclear Information System (INIS)

    Feng Guangwen; Jia Xiahui

    2012-01-01

    Xinjiang is one of China's rich coal provinces (areas) and it accounts for about 40% national coal reserves. In the long-term radioactive scientific research, monitoring and environmental impact assessment works, we found parts of Yili and Hetian's coal was associated with higher radionuclide, and parts of coal seam even reached nuclear mining level. However the laws and regulations about associated radioactive coal mine supervision were not perfect, and the supervision system is still in the exploration. This article mainly started with the coal mine enterprises' geological prospecting reports, radiation environmental impact assessment and monitoring report preparation for environment acceptance checking and supervisory monitoring, controlled the coal radioactive pollution from the sources, and carried out the research of building Xinjiang associated radioactive coal mine supervision system. The establishment of supervision system will provide technical guidance for the enterprises' coal exploitation and cinders using on the one hand, and on the other hand will provide decision-making basis for strengthening the associated radioactive coal mine supervision for Xinjiang environmental regulators. (authors)

  1. Safety campaign in small coal mines. Campana de seguridad en la pequena mineria del carbon

    Energy Technology Data Exchange (ETDEWEB)

    1988-01-01

    Since March 1985 when the local authority took over responsibility for mine safety and following an initial analysis carried out by the Spanish Council for Industry and Commerce which holds administrative responsibility for monitoring mine safety, it has been noted that the risk of accidents and the accident rate itself were very high in small coal mines. 2 figs., 1 tabs.

  2. The coal mining: perspectives and future; La mineria del Carbon perspectivas y realidades

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez-Castano Merediz, C.

    1997-04-01

    The article analyzes the situation of coal mining after the publication of Law for the regulation of Electric System in Spain, and the publication of the decision 1072/94 CECA to authorize the subsidies for Spanish coal. The production, consumption and perspectives are analyzed.

  3. Large blastholes in coal mining, canal effects. Barrenos largos en la mineria del carbon, efecto canal

    Energy Technology Data Exchange (ETDEWEB)

    Muniz Hevia, E.; Legorburu Zuazva, V.; Blanco Gonzalez, R. (Union Explosivos Rio Tinto SA, Madrid (Spain))

    1988-01-01

    The 'canal effect' has been known for a long time. It appears only in underground workings. It may be said that the coal industry has suffered from it less than other sectors, perhaps because of its rigorous safety legislation. The Spanish coal mining industry has now been without this phenomenon for many years. 3 refs., 3 figs.

  4. 77 FR 38323 - Proposed Extension of Existing Information Collection; Respirable Coal Mine Dust Sampling

    Science.gov (United States)

    2012-06-27

    ... Information Collection; Respirable Coal Mine Dust Sampling AGENCY: Mine Safety and Health Administration... Sampling'' to more accurately reflect the type of information that is collected. Chronic exposure to... dust levels since 1970 and, consequently, the prevalence rate of black lung among coal miners, severe...

  5. [Changes in the blood concentrations of interleukins and electrolytes in miners working in deep coal mines].

    Science.gov (United States)

    Belkina, E B; Rebrov, B A; Rebrova, O A; Stroilo, N G; Voloshinovich, A R

    2001-01-01

    Miners working in deep coal mines, engaged in hard physical work under most harsh mine conditions demonstrate a striking imbalance between pro- and antiinflammatory cytokines and a rise in the blood levels of electrolytes K+ and Na+ as well. The analysis performed revealed a direct correlation between the level of blood concentration of IL-6 and that of K+, Na+.

  6. A complex of optimization problems in planning for the development of mining operations in coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Todorov, A K; Arnaudov, B K; Brankova, B A; Gyuleva, B I; Zakhariyev, G K

    1977-01-01

    The system for planning for the development of coal mines is a complex of interrelated plan optimization, plan calculation and supporting (accounting-analytical and standards) tasks. An important point in this complex is held by the plan optimization tasks. The questions about the synthesis and the structural peculiarities of the system, the essence and machine realization of the tasks are examined.

  7. Managerial Accounting Principles and Cost Calculation Used by Economic Entities in the Coal Mining Industry

    OpenAIRE

    Boca (Rakos) Ileana – Sorina; Vatasoiu Cristian Ionel

    2011-01-01

    Considering the specialized work in managerial accounting, this paper aims to show which cost calculation principles are actually applied in the coal mining industry today. The methodology used in this scientific approach is of qualitative nature, using the following methods: direct observation and interview.

  8. Modeling forest ecosystem changes resulting from surface coal mining in West Virginia

    Science.gov (United States)

    John Brown; Andrew J. Lister; Mary Ann Fajvan; Bonnie Ruefenacht; Christine Mazzarella

    2012-01-01

    The objective of this project is to assess the effects of surface coal mining on forest ecosystem disturbance and restoration in the Coal River Subbasin in southern West Virginia. Our approach is to develop disturbance impact models for this subbasin that will serve as a case study for testing the feasibility of integrating currently available GIS data layers, remote...

  9. 75 FR 57849 - Maintenance of Incombustible Content of Rock Dust in Underground Coal Mines

    Science.gov (United States)

    2010-09-23

    ... correlation between higher job risk and higher wages, suggesting that employees demand monetary compensation... DEPARTMENT OF LABOR Mine Safety and Health Administration 30 CFR Part 75 RIN 1219-AB76 Maintenance of Incombustible Content of Rock Dust in Underground Coal Mines AGENCY: Mine Safety and Health...

  10. Mapping and monitoring coal mine subsidence using LiDAR and InSAR

    Energy Technology Data Exchange (ETDEWEB)

    Froese, C.R.; Mei, S. [Alberta Geological Survey, Edmonton, AB (Canada). Energy Resources Conservation Board

    2008-07-01

    In the early 1900s, the abandonment of coal mines in Alberta was not regulated and closure documentation was poor. Although the general locations of mines are known, the locations of the specific adits and shafts are not. As such, there are many cases in southwestern Alberta where infrastructure was built on top of old coal mine workings without any detailed records of the abandoned mine or displacement monitoring. The crowns of these workings have been subject to ongoing strain that is reflected at the surface. The rate at which the strain is progressing prior to collapse is not well understood. Mitigation of collapse events is site specific and reactive. This paper demonstrated that airborne LiDAR and spaceborne InSAR technologies can provide valuable information on the distribution of abandoned underground coal mine workings. Both remote sensing techniques were used on Turtle Mountain in the Crowsnest Pass to obtain quantitative information on landslide mechanics, including the patterns and rate of ground movement and subsidence. These techniques can be used to map the location of surface collapse and delineate the location of the coal mine workings that were not previously documented. It was concluded that these technologies will likely become more readily available in the future and incorporated into geo-engineering practices for use in ground hazard detection, monitoring and management. 8 refs., 6 figs.

  11. 75 FR 20918 - High-Voltage Continuous Mining Machine Standard for Underground Coal Mines

    Science.gov (United States)

    2010-04-22

    ... DEPARTMENT OF LABOR Mine Safety and Health Administration 30 CFR Parts 18 and 75 RIN 1219-AB34 High-Voltage Continuous Mining Machine Standard for Underground Coal Mines Correction In rule document 2010-7309 beginning on page 17529 in the issue of Tuesday, April 6, 2010, make the following correction...

  12. 77 FR 1513 - Division of Coal Mine Workers' Compensation; Proposed Renewal of Existing Collection; Comment...

    Science.gov (United States)

    2012-01-10

    ... DEPARTMENT OF LABOR Office of Workers' Compensation Programs Division of Coal Mine Workers' Compensation; Proposed Renewal of Existing Collection; Comment Request ACTION: Notice. SUMMARY: The Department of Labor, as part of its continuing effort to reduce paperwork and respondent burden, conducts a pre...

  13. 75 FR 51487 - Division of Coal Mine Workers' Compensation; Proposed Extension of Information Collection...

    Science.gov (United States)

    2010-08-20

    ... DEPARTMENT OF LABOR Office of Workers' Compensation Programs Division of Coal Mine Workers' Compensation; Proposed Extension of Information Collection; Comment Request ACTION: Notice. SUMMARY: The Department of Labor, as part of its continuing effort to reduce paperwork and respondent burden, conducts a...

  14. Coal Mine Accidents in Bangladesh: Its Causes and Remedial Measures

    Directory of Open Access Journals (Sweden)

    MD. MINHAJ UDDIN MONIR

    2012-12-01

    Full Text Available Barapukuria coal mine (BCM is located at Dinajpur district, NW Bangladesh. Total area is about 6.68 km2 and coal was encountered at a depth ranging between 118 and 509 m. Six major coal seams (seam I to seam VI were identified at BCM, of which, thickest one is the seam-VI (~36 m. The estimated coal reserves is about 390 million tons and of this, nearly 64 million tons of coal is extractable. The annual production of coal is about 1 million ton. In this study several parameters were used to explore minimization of accidents and improvement of coal production in BCM. Considering the geological, hydrological and other technical parameters, longwall mining method is applied for extraction of coal. Longwall retreating mining method is also applied for extraction of coal from single face with the operational area protected by self-advancing hydraulic powered roof support (HPRS system. These supports are moved forward causing the roof behind them to form an extensive abandoned area named goaf, which may lead to collapse with air blast. Coal in BCM is extracted from seam VI, using a multislice Longwall top coal caving method. Average ventilated air composition is ~20.94% oxygen, ~79.00% nitrogen, ~0.04% carbon monoxide, and minor water steam with huge dust. Production of coal was completed from 12 Longwall faces of 1st slice from seam VI. During production period several accidents and troubles within BCM have occurred. Poisonous gases such as carbon monoxide were detected during/after development of 1110 Longwall face, which increases up to 6000 ppm, therefore, sealed-off the face with mining equipments. During the development of belt gate roadway of 1101 Longwall face, maximum temperature and humidity increases up to 37 oC and 100%, respectively. Miners of BCM experienced some difficulties to work in that adverse environment. Air return roadway temperature was always 40 to 41oC in 1101 Longwall face during production period, faces temperature 46o

  15. A Review of Mine Rescue Ensembles for Underground Coal Mining in the United States.

    Science.gov (United States)

    Kilinc, F Selcen; Monaghan, William D; Powell, Jeffrey B

    and regulatory agencies have been more restrictive by requiring additional post disaster information regarding atmospheric conditions and other hazards before exposing rescue workers and others in the aftermath of a mine disaster. In light of some of the more recent mine rescuer fatalities such as the Crandall Canyon Mine and Jim Walters Resources in the past years, the direction of reducing exposure is preferred. This review provides a historical perspective on ensembles used during mine rescue operations and summarizes environmental hazards, critical elements of mine rescue ensembles, and key problems with these elements. This study also identifies domains for improved mine rescue ensembles. Furthermore, field observations from several coal mine rescue teams were added to provide the information on the currently used mine rescue ensembles in the U.S.

  16. An Improved Approach to Estimate Methane Emissions from Coal Mining in China.

    Science.gov (United States)

    Zhu, Tao; Bian, Wenjing; Zhang, Shuqing; Di, Pingkuan; Nie, Baisheng

    2017-11-07

    China, the largest coal producer in the world, is responsible for over 50% of the total global methane (CH 4 ) emissions from coal mining. However, the current emission inventory of CH4 from coal mining has large uncertainties because of the lack of localized emission factors (EFs). In this study, province-level CH4 EFs from coal mining in China were developed based on the data analysis of coal production and corresponding discharged CH4 emissions from 787 coal mines distributed in 25 provinces with different geological and operation conditions. Results show that the spatial distribution of CH 4 EFs is highly variable with values as high as 36 m3/t and as low as 0.74 m3/t. Based on newly developed CH 4 EFs and activity data, an inventory of the province-level CH4 emissions was built for 2005-2010. Results reveal that the total CH 4 emissions in China increased from 11.5 Tg in 2005 to 16.0 Tg in 2010. By constructing a gray forecasting model for CH 4 EFs and a regression model for activity, the province-level CH 4 emissions from coal mining in China are forecasted for the years of 2011-2020. The estimates are compared with other published inventories. Our results have a reasonable agreement with USEPA's inventory and are lower by a factor of 1-2 than those estimated using the IPCC default EFs. This study could help guide CH 4 mitigation policies and practices in China.

  17. Polonium-210 accumulates in a lake receiving coal mine discharges-anthropogenic or natural?

    Science.gov (United States)

    Nelson, A W; Eitrheim, E S; Knight, A W; May, D; Wichman, M D; Forbes, T Z; Schultz, M K

    2017-02-01

    Coal is an integral part of global energy production; however, coal mining is associated with numerous environmental health impacts. It is well documented that coal-mine waste can contaminate the environment with naturally-occurring radionuclides from the uranium-238 ( 238 U) decay series. However, the behavior of the final radionuclide in the 238 U-series, i.e., polonium-210 ( 210 Po) arising from coal-mine waste-water discharge is largely unexplored. Here, results of a year-long (2014-2015) field study, in which the concentrations of 210 Po in sediments and surface water of a lake that receives coal-mine waste-water discharge in West Virginia are presented. Initial measurements identified levels of 210 Po in the lake sediments that were in excess of that which could be attributed to ambient U-series parent radionuclides; and were indicative of discharge site contamination of the lake ecosystem. However, control sediment obtained from a similar lake system in Iowa (an area with no coal mining or unconventional drilling) suggests that the levels of 210 Po in the lake are a natural phenomenon; and are likely unrelated to waste-water treatment discharges. Elevated levels of 210 Po have been reported in lake bottom sediments previously, yet very little information is available on the radioecological implications of 210 Po accumulation in lake bottom sediments. The findings of this study suggest that (Monthly Energy Review, 2016) the natural accumulation and retention of 210 Po in lake sediments may be a greater than previously considered (Chadwick et al., 2013) careful selection of control sites is important to prevent the inappropriate attribution of elevated levels of NORM in lake bottom ecosystems to industrial sources; and (Van Hook, 1979) further investigation of the source-terms and potential impacts on elevated 210 Po in lake-sediment ecosystems is warranted. Copyright © 2016 Elsevier Ltd. All rights reserved.

  18. Hybrid Technology of Hard Coal Mining from Seams Located at Great Depths

    Science.gov (United States)

    Czaja, Piotr; Kamiński, Paweł; Klich, Jerzy; Tajduś, Antoni

    2014-10-01

    Learning to control fire changed the life of man considerably. Learning to convert the energy derived from combustion of coal or hydrocarbons into another type of energy, such as steam pressure or electricity, has put him on the path of scientific and technological revolution, stimulating dynamic development. Since the dawn of time, fossil fuels have been serving as the mankind's natural reservoir of energy in an increasingly great capacity. A completely incomprehensible refusal to use fossil fuels causes some local populations, who do not possess a comprehensive knowledge of the subject, to protest and even generate social conflicts as an expression of their dislike for the extraction of minerals. Our times are marked by the search for more efficient ways of utilizing fossil fuels by introducing non-conventional technologies of exploiting conventional energy sources. During apartheid, South Africa demonstrated that cheap coal can easily satisfy total demand for liquid and gaseous fuels. In consideration of current high prices of hydrocarbon media (oil and gas), gasification or liquefaction of coal seems to be the innovative technology convergent with contemporary expectations of both energy producers as well as environmentalists. Known mainly from literature reports, underground coal gasification technologies can be brought down to two basic methods: - shaftless method - drilling, in which the gasified seam is uncovered using boreholes drilled from the surface, - shaft method, in which the existing infrastructure of underground mines is used to uncover the seams. This paper presents a hybrid shaft-drilling approach to the acquisition of primary energy carriers (methane and syngas) from coal seams located at great depths. A major advantage of this method is the fact that the use of conventional coal mining technology requires the seams located at great depths to be placed on the off-balance sheet, while the hybrid method of underground gasification enables them to

  19. Estimating benthic secondary production from aquatic insect emergence in streams affected by mountaintop removal coal mining, West Virginia USA

    Science.gov (United States)

    Mountaintop removal and valley fill (MTR/VF) coal mining recountours the Appalachian landscape, buries headwater stream channels, and degrades downstream water quality. The goal of this study was to compare benthic community production estimates, based on seasonal insect emergen...

  20. Strata control in deep coal mines. Control de estratos en tajos subteraneos de la mineria del carbon

    Energy Technology Data Exchange (ETDEWEB)

    Ramirez Oyanguren, P.; De la Cuadra, L.

    1985-01-01

    The six chapters cover the following subjects: mining methods used in Spanish coal mines; rock movement and pressure around a longwall face; roof bed study; underground support systems; gas dynamic phenomena; and instrumentation for underground mine monitoring.

  1. Study on the Effect of Frequency on Conductivity of Underground Strata in Coal Mine Through-the-earth Wireless Communication

    Directory of Open Access Journals (Sweden)

    Jinyi TAO

    2014-09-01

    Full Text Available The relationship of conductivity and the frequency, which is of decisive significance in through-the-earth wireless communication in coal mine, is closely related to the options of frequency range in coal mine wireless communication. When through-the-earth wireless communication is applied, the electromagnetic waves need to spread in the semi-conductive medium rocks. The main factors affecting the electromagnetic wave propagation in rocks is the rock strata electromagnetic parameters. These parameters are magnetic permeability m (H/m, dielectric constant e (F/m and electrical conductivity s (S/m. In these parameters, electrical conductivity is not constant. Under the influence of various factors, it will be great changes. This paper, for the specific circumstances of coal mine rock, discuses and conduct dada mining the effect frequency on the electrical conductivity of underground rock in coal mine with through-the-earth wireless communication.

  2. Life cycle assessment of opencast coal mine production: a case study in Yimin mining area in China.

    Science.gov (United States)

    Zhang, Li; Wang, Jinman; Feng, Yu

    2018-03-01

    China has the largest coal production in the world due to abundant resource requirements for economic development. In recent years, the proportion of opencast coal mine production has increased significantly in China. Opencast coal mining can lead to a large number of environmental problems, including air pollution, water pollution, and solid waste occupation. The previous studies on the environmental impacts of opencast coal mine production were focused on a single production process. Moreover, mined land reclamation was an important process in opencast coal mine production; however, it was rarely considered in previous research. Therefore, this study attempted to perform a whole environmental impact analysis including land reclamation stage using life cycle assessment (LCA) method. The Yimin opencast coal mine was selected to conduct a case study. The production of 100 tons of coal was used as the functional unit to evaluate the environmental risks in the stages of stripping, mining, transportation, processing, and reclamation. A total of six environmental impact categories, i.e., resource consumption, acidification, global warming, solid waste, eutrophication, and dust, were selected to conduct this assessment. The contribution rates of different categories of environmental impacts were significantly different, and different stages exhibited different consumption and emissions that gave rise to different environmental effects. Dust was the most serious environmental impact category, and its contribution rate was 36.81%, followed by global warming and acidification with contribution rates of 29.43% and 22.58%, respectively. Both dust and global warming were mainly affected in mining stage in Yimin opencast coal mine based on comprehensive analysis of environmental impact. Some economic and feasible measures should be used to mitigate the environmental impacts of opencast coal mine production, such as water spraying, clean transportation, increasing processing

  3. Study on the Effect of Frequency on Conductivity of Underground Strata in Coal Mine Through-the-earth Wireless Communication

    OpenAIRE

    Jinyi TAO; Yuchen ZHANG

    2014-01-01

    The relationship of conductivity and the frequency, which is of decisive significance in through-the-earth wireless communication in coal mine, is closely related to the options of frequency range in coal mine wireless communication. When through-the-earth wireless communication is applied, the electromagnetic waves need to spread in the semi-conductive medium rocks. The main factors affecting the electromagnetic wave propagation in rocks is the rock strata electromagnetic parameters. These p...

  4. R&D status and the performance of domestic firms in China's coal mining industry

    International Nuclear Information System (INIS)

    Sun, Sizhong; Anwar, Sajid

    2015-01-01

    Coal use accounts for a very large proportion of electricity production in China. Using a recently developed coarsened exact matching (CEM) technique, this paper examines the impact of research and development (R&D) activities on the performance of firms in China's coal mining industry. Our empirical results reveal that firms in China's coal industry that conduct R&D are more productive and their sales are higher. However, as far as the firm profitability and market shares are concerned, whether or not a firm in China's coal industry conducts R&D makes no difference. We find that foreign direct investment in China's coal mining industry leads to a significant decrease in the market share of domestic firms and its impact on productivity, sales and profitability of domestic firms is insignificant. The empirical results presented in this paper suggest that policies that encourage domestic firms in China's coal mining industries to conduct R&D can increase domestic production thereby reducing reliance on imports. Furthermore, productivity gains arising from R&D activities can also help Chinese mining firms to improve their competitive position in the international market. However, there is a need for restricting foreign direct investment in China's coal mining industry. - Highlights: • R&D status affects firm performance in China's coal mining industry. • Coal mining firms that conduct R&D are, on average, 0.2717% more productive. • Coal mining firms that conduct R&D experience an increase in sales. • Increase in foreign investment decreases the market share of coal mining firms

  5. Sustainable recultivation and wastewater treatment in Vietnamese coal mining; Nachhaltige Rekultivierung und Behandlung von Abwaessern im vietnamesischen Steinkohlenbergbau

    Energy Technology Data Exchange (ETDEWEB)

    Knapp, Sonja; Klotz, Stefan [Helmholtz-Zentrum fuer Umweltforschung - UFZ, Halle (Germany); Gerth, Andre [BioPlanta GmbH, Leipzig (Germany)

    2012-07-15

    It is possible to broaden the range of species used for the recultivation of hard coal mining sites in north-eastern Vietnam. The plant species currently used by VINACOMIN can be complemented by species that are native to Vietnam and spontaneously occur on the mining sites. Planting species in mixed plantations instead of monocultures is beneficial for soil formation, reduces the risk of dump fires and pest infestations, and supports biodiversity. For initial recultivation plantations, we suggest planting species along the edges of waste rock dump plateaus. These edge plantations should surround several plant groups (vegetation islands) planted on the plateau. To establish vegetation islands on slopes, it is advantageous if the slope has benches that can be planted. All plantations should initially be fertilized by adding organic additives. By planting a broad range of species, diverse options for postmining land use can be created. Several species that occur spontaneously on waste rock dumps provide timber or pharmacologically active substances. Moreover, diverse species mixtures are much more attractive to tourists than monoculture plantations. In vitro propagation is useful to produce a lot of plant individuals for recultivation in a short space of time. This is especially beneficial for the reproduction of plant species that are not provided by nurseries. Moreover, in comparison to generative or vegetative breeding outdoor or in a greenhouse, in vitro propagation reduces loss rates. We adapted the technology of Constructed Wetlands to the conditions of north-eastern Vietnam hard coal mining. Wastewater treatment in the pilot plant decreased all relevant parameters below the critical thresholds given by the Vietnamese legal criteria for surface water quality standard TCVN 5942-1995. Full-scale constructed wetlands with a capacity of several 100 m{sup 3}/d can be built for a price of 45 Euro/m{sup 2}. This price can be further reduced by using alternative

  6. Characterization of seven United States coal regions. The development of optimal terrace pit coal mining systems

    Energy Technology Data Exchange (ETDEWEB)

    Wimer, R.L.; Adams, M.A.; Jurich, D.M.

    1981-02-01

    This report characterizes seven United State coal regions in the Northern Great Plains, Rocky Mountain, Interior, and Gulf Coast coal provinces. Descriptions include those of the Fort Union, Powder River, Green River, Four Corners, Lower Missouri, Illinois Basin, and Texas Gulf coal resource regions. The resource characterizations describe geologic, geographic, hydrologic, environmental and climatological conditions of each region, coal ranks and qualities, extent of reserves, reclamation requirements, and current mining activities. The report was compiled as a basis for the development of hypothetical coal mining situations for comparison of conventional and terrace pit surface mining methods, under contract to the Department of Energy, Contract No. DE-AC01-79ET10023, entitled The Development of Optimal Terrace Pit Coal Mining Systems.

  7. Computerization of administration and operation management in Polish black coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Mastej, R.; Syrkiewicz, J. (Centralny Osrodek Informatyki Gornictwa (Poland))

    1990-08-01

    Characterizes main solutions of the computerized management model adopted in Poland for the mining industry and the technical and oganizational structure of computer system application. Computer systems for black coal mines and the range of microprocessor application are shown in block diagrams. The COIG mining information center makes about 45 computer system modules with independent implementation available for black coal mines. The general concept foresees central data processing in the COIG center on the ODRA 1305 and ICL 297 computers with the G-3 operating system in the first stage and an ICL series 39 computer with the VME operating system in the second stage. For mines where no transmission lines are available local solutions based on smaller ICL computers, minicomputers or computer networks with the NOVELL network operating system or multi-access systems with the UNIX operating system are planned. 3 refs.

  8. Investigation of environmental activity levels of bone-coal mining area in five provinces

    International Nuclear Information System (INIS)

    Ye Jida; Wu Zongmei; Kong Lingli; Shi Jinhua; Li Ying; Jiang Shan; Zhang Liang

    2005-01-01

    During 1991-1993, the activity levels of the bone-coal mines were investigated in Zhejiang, Hubei, Hunan, Jiangxi and Anhui Province, respectively, where the reserve of bone-coal is about 90% of our country's total reserve. The average of γ radiation dose rate level measured for bone-coal, bone-coal cinder (BCC) and bone-coal cinder brick (BCCB) in these provinces is about 500 nGy/h, 400 nGy/h and 700 nGy/h respectively, while that for fields, roads and houses made of BCCB in corresponding regions of these provinces is about 200 nGy/h, 260 nGy/h and 300 nGy/h respectively. It is shown that the environmental activity level of bone-coal mining area is about 3 times higher than the reference spots. (authors)

  9. Im. A. F. Zasyad'ko coal mine during the eleventh five year plan

    Energy Technology Data Exchange (ETDEWEB)

    Zvyagil' skii, E.L.

    1985-08-01

    The achievements of this mine are chronicled, which began production in December 1958, throughout the eleventh five year plan, showing how the annual targets for coal output, roadway drivage, savings in energy and materials, output per manshift and cost price of coal were met and improved upon in each of the five years. The factors which made possible these achievements in productivity and efficiency are described and include: use of modern equipment and systems, increased mechanization, on-site education and training, improved discipline, reduced absenteeism, incentive schemes and, above all, the full involvement of the coal mine in the program of socialist competition. The social infrastructure supporting the coal mine and its workforce is also described.

  10. Public views of reclaiming an abandoned coal mine: the Macoupin County project

    Energy Technology Data Exchange (ETDEWEB)

    Bernard, J. R.

    1980-07-01

    An abandoned underground coal mine waste area in Macoupin County, Illinois, has been reclaimed for demonstration and research purposes near the city of Staunton. According to federal law, end uses of reclaimed coal mines must be determined in part by local concerns. This study examined local residents' preferences for land uses and their social and economic evaluations of reclamation at the Macoupin County site. Personal interviews with 119 residents revealed preferences for recreational use of the demonstration area; however, responses were probably influenced by prior awareness of land-use intentions. Generally, very positive evaluations of the reclamation were received. Willingness to pay for reclamation appears to be linked to fulfillment of desired recreational uses on the site and socioeconomic status of the respondent. In general, the research results provide further evidence that the value of abatement of environmental damage from mining is recognized and supported in economic terms at the public level.

  11. Multiparty Evolutionary Game Model in Coal Mine Safety Management and Its Application

    Directory of Open Access Journals (Sweden)

    Rongwu Lu

    2018-01-01

    Full Text Available Coal mine safety management involves many interested parties and there are complex relationships between them. According to game theory, a multiparty evolutionary game model is established to analyze the selection of strategies. Then, a simplified three-party model is taken as an example to carry out detailed analysis and solution. Based on stability theory of dynamics system and phase diagram analysis, this article studies replicator dynamics of the evolutionary model to make an optimization analysis of the behaviors of those interested parties and the adjustment mechanism of safety management policies and decisions. The results show how the charge of supervision of government department and inspection of coal mine enterprise impact the efficiency of safety management and the effect of constraint measures and incentive and other measures in safety management.

  12. The impact of the structural features of the rock mass on seismicity in Polish coal mines

    Science.gov (United States)

    Patyńska, Renata

    2017-11-01

    The article presents seismic activity induced in the coal mines of the Upper Silesian Coal Basin (GZW) in relation to the locations of the occurrence of rockbursts. The comparison of these measurements with the structural features of the rock mass of coal mines indicates the possibility of estimating the so-called Unitary Energy Expenditure (UEE) in a specific time. The obtained values of UEE were compared with the distribution of seismic activity in GZW mines. The level of seismic activity in the analysed period changed and depended on the intensity of mining works and diverse mining and geological conditions. Five regions, where tremors occurred (Bytom Trough, Main Saddle, Main Trough, Kazimierz Trough, and Jejkowice and Chwałowice Trough) which belong to various structural units of the Upper Silesia were analyzed. It was found out that rock bursts were recorded only in three regions: Main Saddle, Bytom Trough, and Jejkowice and Chwałowice Trough.

  13. IMPROVING THE ORGANIZATION OF THE SHOVEL-TRUCK SYSTEMS IN OPEN-PIT COAL MINES

    Directory of Open Access Journals (Sweden)

    Mark KORYAGIN

    2017-06-01

    Full Text Available The aim of the study is to reduce idle times of mining trucks and shovels in an open-pit coal mine. A heuristic algorithm for making dispatching decisions in conditions of dynamic allocation of trucks is developed. Priority parameters for choosing the shovel after the end-of-truck unloading are introduced. Also, an algorithm for searching for the optimal priority parameters to satisfy the required efficiency criterion is developed. This algorithm is based on a simulation model of a shovel-truck system. The proposed approach is applicable in terms of the group of shovels with a common dump point in various open-pit coal mines. The importance of this work lies in the fact that the proposed model takes into account the random factors related with the duration of loading and dumping, truck movement, repair of shovels and haul trucks, as well as the duration of periods between repairs.

  14. Estimating Limits for the Geothermal Energy Potential of Abandoned Underground Coal Mines: A Simple Methodology

    Directory of Open Access Journals (Sweden)

    Rafael Rodríguez Díez

    2014-07-01

    Full Text Available Flooded mine workings have good potential as low-enthalpy geothermal resources, which could be used for heating and cooling purposes, thus making use of the mines long after mining activity itself ceases. It would be useful to estimate the scale of the geothermal potential represented by abandoned and flooded underground mines in Europe. From a few practical considerations, a procedure has been developed for assessing the geothermal energy potential of abandoned underground coal mines, as well as for quantifying the reduction in CO2 emissions associated with using the mines instead of conventional heating/cooling technologies. On this basis the authors have been able to estimate that the geothermal energy available from underground coal mines in Europe is on the order of several thousand megawatts thermal. Although this is a gross value, it can be considered a minimum, which in itself vindicates all efforts to investigate harnessing it.

  15. The accident analysis of mobile mine machinery in Indian opencast coal mines.

    Science.gov (United States)

    Kumar, R; Ghosh, A K

    2014-01-01

    This paper presents the analysis of large mining machinery related accidents in Indian opencast coal mines. The trends of coal production, share of mining methods in production, machinery deployment in open cast mines, size and population of machinery, accidents due to machinery, types and causes of accidents have been analysed from the year 1995 to 2008. The scrutiny of accidents during this period reveals that most of the responsible factors are machine reversal, haul road design, human fault, operator's fault, machine fault, visibility and dump design. Considering the types of machines, namely, dumpers, excavators, dozers and loaders together the maximum number of fatal accidents has been caused by operator's faults and human faults jointly during the period from 1995 to 2008. The novel finding of this analysis is that large machines with state-of-the-art safety system did not reduce the fatal accidents in Indian opencast coal mines.

  16. The coal mining industry in Vietnam and its challenges; Steinkohlenbergbau in Vietnam und seine Herausforderungen

    Energy Technology Data Exchange (ETDEWEB)

    Martens, Per Nicolai; Pateiro Fernandez, Jose B.; Ahmad, Shakeel [RWTH Aachen (Germany). Inst. fuer Bergbaukunde I; Cramer, Thomas; Deissmann, Guido [Brenk Systemplanung GmbH, Aachen (Germany); Fuchsschwanz, Marcus [RWTH Aachen (Germany). Lehrstuhl fuer Geotechnik

    2010-04-15

    The province of Quang Ninh in the north of Vietnam is the most important coal mining region in the country. The NBCC (Nui Beo Coal Company) operates several open-cast mines. Large quantities of overburden have to be removed and dumped in the immediate environment. The creation of these heaps up to 300 m high is accompanied by many environmental problems. In particular ground and surface waters are contaminated by ''acid mine drainage''. Furthermore, large emissions chiefly in the form of dust occur as a result of the working and dumping depending on the season. In addition the stability of the heaps is sometimes greatly endangered. In the German-Vietnamese Research Association Mining and Environment in Vietnam (RAME) the aspects of coal mining with an effect on the environment are dealt with in various sub-associations and protective measures worked out jointly. (orig.)

  17. Final report on dust monitoring near Kellingley coal mine, North Yorkshire

    International Nuclear Information System (INIS)

    Vallack, H.W.

    1992-06-01

    Dust deposition was monitored at a residential location near Kellingley Coal Mine over two four-weekly periods (November/December 1991 and March/April 1992) using a wet Frisbee dust deposit gauge. The mean rates of dust deposition for both periods (696.4 and 415.5 mg m -2 day -1 respectively) were well in excess of a proposed acceptable upper limit (195 mg m -2 day -1 ) for residential conditions. Mean estimated coal dust content during both periods (80.9 and 49.7 per cent) was also high. It is concluded that coal dust from Kellingley Coal Mine gave rise to excessively high levels of dust deposition at the monitoring site, especially during the first four-weekly period. The situation would appear to have deteriorated since a similar monitoring exercise was carried out in 1989. 4 refs, 2 figs, 2 tabs

  18. Study of the Korean anthracite for utilization and the coal mine data management

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-01

    This report consists of two articles. (1) Petrographic study of the Korean anthracite for utilization (5): This research was initiated for the development of filtering materials those can be used in waste water treatment sites The small scale of filtration tester was built on the waste water treatment site of Chungjoo electric Co. to use waste water processed by purifying system for the feasibility study. (2) Study of the closed coal mine data management: Underground maps about 1700 adits of 100 coal mines, and related graphic data have been collected in the database. And all those data were entered into the database in vectorial form, coordinates obtaining from the digitizing tablet. Detailed works are described in the other report, including the discussions of graphic database and data handling of graphical mine data. Comments about the GIS is also provided in the volume. (author). 25 refs., 45 figs., 50 tabs., 3 maps.

  19. Research on preventive technologies for bed-separation water hazard in China coal mines

    Science.gov (United States)

    Gui, Herong; Tong, Shijie; Qiu, Weizhong; Lin, Manli

    2018-03-01

    Bed-separation water is one of the major water hazards in coal mines. Targeted researches on the preventive technologies are of paramount importance to safe mining. This article studied the restrictive effect of geological and mining factors, such as lithological properties of roof strata, coal seam inclination, water source to bed separations, roof management method, dimensions of mining working face, and mining progress, on the formation of bed-separation water hazard. The key techniques to prevent bed-separation water-related accidents include interception, diversion, destructing the buffer layer, grouting and backfilling, etc. The operation and efficiency of each technique are corroborated in field engineering cases. The results of this study will offer reference to countries with similar mining conditions in the researches on bed-separation water burst and hazard control in coal mines.

  20. 30 CFR 75.1103-1 - Automatic fire sensors.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Automatic fire sensors. 75.1103-1 Section 75.1103-1 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR COAL MINE SAFETY... fire sensors. A fire sensor system shall be installed on each underground belt conveyor. Sensors so...

  1. Study of environmental pollution and mineralogical characterization of sediment rivers from Brazilian coal mining acid drainage

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Luis F.O., E-mail: felipeqma@hotmail.com [Environmental Science and Nanotechnology Department, Institute of Environmental Research and Human Development – IPADH, Capivari de Baixo, Santa Catarina (Brazil); Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitário La Salle, Victor Barreto, 2288 Centro 92010-000, Canoas, RS (Brazil); Fdez- Ortiz de Vallejuelo, Silvia; Martinez-Arkarazo, Irantzu; Castro, Kepa [Department of Analytical Chemistry, University of the Basque Country (EHU/UPV), P.O. Box 644, 48080 Bilbao, Basque Country (Spain); Oliveira, Marcos L.S. [Environmental Science and Nanotechnology Department, Institute of Environmental Research and Human Development – IPADH, Capivari de Baixo, Santa Catarina (Brazil); Sampaio, Carlos H.; Brum, Irineu A.S. de [Universidade Federal do Rio Grande do Sul, Escola de Engenharia, Departamento de Metalurgia, Centro de Tecnologia, Av. Bento Gonçalves, 9500, Bairro Agronomia, CEP: 91501-970, Porto Alegre, RS (Brazil); Leão, Felipe B. de; Taffarel, Silvio R. [Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitário La Salle, Victor Barreto, 2288 Centro 92010-000, Canoas, RS (Brazil); Madariaga, Juan M. [Department of Analytical Chemistry, University of the Basque Country (EHU/UPV), P.O. Box 644, 48080 Bilbao, Basque Country (Spain)

    2013-03-01

    Acid drainage from coal mines and metal mining is a major source of underground and surface water contamination in the world. The coal mining acid drainage (CMAD) from mine contains large amount of solids in suspension and a high content of sulphate and dissolved metals (Al, Mn, Zn, Cu, Pb, Fe, etc.) that finally are deposited in the rivers. Since this problem can persist for centuries after mine abandonment, it is necessary to apply multidisciplinary methods to determine the potential risk in a determinate area. These multidisciplinary methods must include molecular and elemental analysis and finally all information must be studied statistically. This methodology was used in the case of coal mining acid drainage from the Tubarao River (Santa Catarina, Brazil). During molecular analysis, Raman Spectroscopy, electron bean, and X-ray diffraction (XRD) have been proven very useful for the study of minerals present in sediment rivers near this CMAD. The obtained spectra allow the precise identification of the minerals as jarosite, quartz, clays, etc. The elemental analysis (Al, As, Fe, K, Na, Ba, Mg, Mn, Ti, V, Zn, Ag, Co, Li, Mo, Ni, Se, Sn, W, B, Cr, Cu, Pb and Sr) was realised by inductively coupled plasma mass spectrometry (ICP-MS). Statistical analysis (Principal Component Analysis) of these dates of concentration reveals the existence of different groups of samples with specific pollution profiles in different areas of the Tubarao River. Highlights: ► Increasing coal drainage sediments geochemical information will increase human health information in this area. ► Brazilian coal mining information will increase recuperation planning information. ► The nanominerals showed strong sorption ability to aqueous hazardous elements.

  2. Study of Natural Radioactivity in Coal Samples of Baganuur Coal Mine, Mongolia

    Science.gov (United States)

    Altangerel, M.; Norov, N.; Altangerel, D.

    2009-03-01

    Coal and soil samples from Baganuur Coal Mine (BCM) of Mongolia have been investigated. The activities of 226Ra, 232Th and 40K have been measured by gamma-ray spectrometry using shielded HPGe detector. Contents of natural radionuclide elements (U, Th and K) have been determined. Also the activities and contents of radionuclide of ashes were determined which generated in Thermal Power Plant ♯3 of Ulaanbaatar from coal supplied from BCM.

  3. Economic efficiency of brown coal mine ''Konin'' in market economy conditions

    International Nuclear Information System (INIS)

    Jeruzel, M.

    1995-01-01

    The economic situation of ''Konin'' brown coal mine located in Central Poland is analysed. The main problem of the mine is the coal price which is still regulated despite market economy. It causes many difficulties and therefore a change of energy policy is postulated. The basic economic results for 1993 as well as prognosis of investment costs up to 2020 are given. The changes of management system and the strategy planning training are also described. 2 ills, 1 tab

  4. Quantifying Surface Coal-Mining Patterns to Promote Regional Sustainability in Ordos, Inner Mongolia

    Directory of Open Access Journals (Sweden)

    Xiaoji Zeng

    2018-04-01

    Full Text Available Ordos became the new “coal capital” of China within a few decades since the country’s economic reform in 1978, as large-scale surface coal mining dramatically propelled its per capita GDP from being one of the lowest to one of the highest in China, exceeding Hong Kong in 2009. Surface coal-mining areas (SCMAs have continued to expand in this region during recent decades, resulting in serious environmental and socioeconomic consequences. To understand these impacts and promote regional sustainability, quantifying the spatiotemporal patterns of SCMAs is urgently needed. Thus, the main objectives of this study were to quantify the spatiotemporal patterns of SCMAs in the Ordos region from 1990 to 2015, and to examine some of the major environmental and socioeconomic impacts in the study region. We extracted the SCMAs using remote-sensing data, and then quantified their spatiotemporal patterns using landscape metrics. The loss of natural habitat and several socioeconomic indicators were examined in relation to surface coal mining. Our results show that the area of SCMAs increased from 7.12 km2 to 355.95 km2, an increase of nearly 49 times from 1990 to 2015 in the Ordos region. The number of SCMAs in this region increased from 82 to 651, a nearly seven-fold increase. In particular, Zhungeer banner (an administrative division, Yijinhuoluo banner, Dongsheng District and Dalate banner in the north-eastern part of the Ordos region had higher growth rates of SCMAs. The income gap between urban and rural residents increased along with the growth in SCMAs, undermining social equity in the Ordos region. Moreover, the rapid increase in SCMAs resulted in natural habitat loss (including grasslands, forests, and deserts across this region. Thus, we suggest that regional sustainability in Ordos needs to emphasize effective measures to curb large-scale surface coal mining in order to reduce the urban–rural income gap, and to restore degraded natural

  5. Preliminary report on LLNL mine seismicity deployment at the Twentymile Coal Mine

    International Nuclear Information System (INIS)

    Walter, W.R.; Hunter, S.L.; Glenn, L.A.

    1996-01-01

    This report summarizes the preliminary results of a just completed experiment at the Twentymile Coal Mine, operated by the Cyprus Amax Coal Company near Oak Creek, CO. The purpose of the experiment was to obtain local and regional seismic data from roof caves associated with long-wall mining activities and to use this data to help determine the effectiveness with which these events can be discriminated from underground nuclear explosions under a future Comprehensive Test Ban Treaty

  6. Data Mining Mining Data: MSHA Enforcement Efforts, Underground Coal Mine Safety, and New Health Policy Implications

    OpenAIRE

    Thomas J. Kniesner; John D. Leeth

    2003-01-01

    Studies of industrial safety regulations, Occupational Safety and Health Administration (OSHA) in particular, often find little effect on worker safety. Critics of the regulatory approach argue that safety standards have little to do with industrial injuries and defenders of the regulatory approach cite infrequent inspections and low fines for violating safety standards. We use recently assembled data from the Mine Safety and Health Administration (MSHA) concerning underground coal mine produ...

  7. Data Mining Mining Data: MSHA Enforcement Efforts, Underground Coal Mine Safety, and New Health Implications

    OpenAIRE

    Kniesner, Thomas J.; Leeth, John D.

    2003-01-01

    Studies of industrial safety regulations, OSHA in particular, often find little effect on worker safety. Critics of the regulatory approach argue that safety standards have little to do with industrial injuries, and defenders of the regulatory approach cite infrequent inspections and low penalties for violating safety standards. We use recently assembled data from the Mine Safety and Health Administration (MSHA) concerning underground coal mine production, safety regulatory activities, and wo...

  8. Behaviour of radium isotopes released with brines and sediments from coal mines in Poland

    International Nuclear Information System (INIS)

    Wysocka, M.; Chalupnik, S.; Mielnikow, A.; Lebecka, J.; Skubacz, K.

    1998-01-01

    Saline waters occurring in underground coal mines in Poland often contain natural radioactive isotopes, mainly 226 Ra from uranium series and 228 Ra from thorium series. Approximately 40% of total amount of radium remains underground in a form of radioactive deposits, but 225 MBq of 226 Ra and 380 MBq of 228 Ra are released daily to the rivers with mine effluents. Technical measures as spontaneous precipitation of radium in gobs, decreasing of amounts of water inflowing into underground working etc. have been undertaken in several coal mines and in the result total amount of radium released to the surface waters diminished by about 60% during last 5-6 years. Mine waters can cause a severe impact on the natural environment. The enhancement of radium concentration in river waters, bottom sediments and vegetation is observed. Sometimes radium concentration in rivers exceeds 0.7 kBq/m 3 , which is due to Polish law a permissible level for liquid radioactive waste. It was necessary to undertake investigations for development the methods of the purification of mine waters from radium. The radium balance in effluents has been calculated and a map of radioactive contamination of river waters have been prepared. Solid wastes with enhanced natural radioactivity have been produced in huge amounts in energy and coal industries in Poland. There are two main sources of these waste products. As a result of combustion of coal in power plants low radioactive waste materials are produced, with 226 Ra concentration seldom exceeding few hundreds of Bq/kg. Different situation is be observed in coal mines, where as a result of precipitation of radium from radium-bearing waters radioactive deposits are formed. Sometimes natural radioactivity of such materials is very high, in case of scaling from coal mines radium concentration may reach 4x10 5 Bq/kg - similar activity as for 3% uranium ore. Therefore maintenance of solid waste with technologically enhanced natural radioactivity (TENR

  9. Study of environmental pollution and mineralogical characterization of sediment rivers from Brazilian coal mining acid drainage

    International Nuclear Information System (INIS)

    Silva, Luis F.O.; Fdez- Ortiz de Vallejuelo, Silvia; Martinez-Arkarazo, Irantzu; Castro, Kepa; Oliveira, Marcos L.S.; Sampaio, Carlos H.; Brum, Irineu A.S. de; Leão, Felipe B. de; Taffarel, Silvio R.; Madariaga, Juan M.

    2013-01-01

    Acid drainage from coal mines and metal mining is a major source of underground and surface water contamination in the world. The coal mining acid drainage (CMAD) from mine contains large amount of solids in suspension and a high content of sulphate and dissolved metals (Al, Mn, Zn, Cu, Pb, Fe, etc.) that finally are deposited in the rivers. Since this problem can persist for centuries after mine abandonment, it is necessary to apply multidisciplinary methods to determine the potential risk in a determinate area. These multidisciplinary methods must include molecular and elemental analysis and finally all information must be studied statistically. This methodology was used in the case of coal mining acid drainage from the Tubarao River (Santa Catarina, Brazil). During molecular analysis, Raman Spectroscopy, electron bean, and X-ray diffraction (XRD) have been proven very useful for the study of minerals present in sediment rivers near this CMAD. The obtained spectra allow the precise identification of the minerals as jarosite, quartz, clays, etc. The elemental analysis (Al, As, Fe, K, Na, Ba, Mg, Mn, Ti, V, Zn, Ag, Co, Li, Mo, Ni, Se, Sn, W, B, Cr, Cu, Pb and Sr) was realised by inductively coupled plasma mass spectrometry (ICP-MS). Statistical analysis (Principal Component Analysis) of these dates of concentration reveals the existence of different groups of samples with specific pollution profiles in different areas of the Tubarao River. Highlights: ► Increasing coal drainage sediments geochemical information will increase human health information in this area. ► Brazilian coal mining information will increase recuperation planning information. ► The nanominerals showed strong sorption ability to aqueous hazardous elements

  10. Proceedings of the 1985 conference on coal mine subsidence in the Rocky Mountain Region

    Energy Technology Data Exchange (ETDEWEB)

    Hynes, J.L. (ed.)

    1986-01-01

    A total of 20 papers were presented at the conference on the following subjects: reclamation projects; geological surveys; history and evolution of mining; essential components of mine subsidence; subsidence related damage; core recovery of poorly consolidated materials; evaluation of subsurface conditions; remote video inspection of abandoned coal mines; use of progressive failure model for subsidence prediction; chimney subsidence sinkhole development; analytical methods of subsidence prediction; monitoring networks; architectural mitigating measures; backfilling; awareness and planning; administrative aspects; mine subsidence insurance; risk management.

  11. Possibility of convergence measurement of gates in coal mining using terrestrial 3D laser scanner

    Czech Academy of Sciences Publication Activity Database

    Kukutsch, Radovan; Kajzar, Vlastimil; Koníček, Petr; Ptáček, Jiří; Waclawik, Petr

    2015-01-01

    Roč. 14, č. 1 (2015), s. 1-8 ISSN 2300-3960 R&D Projects: GA MŠk ED2.1.00/03.0082; GA MŠk(CZ) LO1406 Institutional support: RVO:68145535 Keywords : 3D laser scanning * point clouds * mining * geotechnical monitoring * convergence measurement Subject RIV: DH - Mining, incl. Coal Mining http://www.sciencedirect.com/science/article/pii/S2300396015000063

  12. Endoparasite Community Differences in Sunfish (Lepomis spp.) Above and Below Coal Mine Effluent in Southern Illinois.

    Science.gov (United States)

    Claxton, Andrew; Laursen, Jeff

    2015-06-01

    Parasite assemblages acquired through trophic interactions in fish hosts are increasingly cited as a means to determine pollution effects on water quality and food web structure. We examined gastrointestinal parasite community changes above and below coal mine input from 597 individuals representing 3 species of sunfish: green sunfish ( Lepomis cyanellus ), bluegill ( L. macrochirus ), and longear sunfish ( L. megalotis ). Hosts were collected from 6 sites in or near the south fork of the Saline River Basin in southern Illinois in the spring and fall of 2006. Three sites received no known effluent from coal mines. An additional 3 sites received effluent termed acid mine drainage (AMD). We recovered 1,064 parasites from 12 genera. The parasite community in sunfish collected downstream nearest to the source of AMD was significantly different from 3 upstream sites. In addition, 2 sites farther downstream receiving AMD were different from 2 of 3 reference sites. However, there was also considerable variability in parasite assemblages between sites grouped as above or below coal mine effluent. Several parasite species responded to changes in water quality. Spinitectus sp. (Nematoda), which uses sensitive mayfly hosts to complete its life cycle, was less abundant at sites downstream of coal mine effluent in both green sunfish and bluegill. In contrast, 2 acanthocephalans ( Neoechinorhynchus sp. and Eocollis arcanus) and a nematode ( Spiroxys sp.) were found in green sunfish more frequently in areas downstream of AMD. This study further suggests metazoan parasites may be useful as indicators of water quality; however, variability among similar sites may limit their application. In addition, strong assemblage differences were found among the 3 sunfish species, suggesting variable habitat usage and potential resource partitioning among congeneric fish hosts in streams.

  13. The Expansion of Coal Mining in the Depression Areas - A Way to Development?

    Czech Academy of Sciences Publication Activity Database

    Martinát, Stanislav; Navrátil, J.; Dvořák, Petr; Klusáček, Petr; Kulla, M.; Kunc, J.; Havlíček, M.

    2014-01-01

    Roč. 8, č. 1 (2014), s. 5-15 ISSN 1843-6587 R&D Projects: GA TA ČR(CZ) TD020259 Institutional support: RVO:68145535 Keywords : coal mining * perception of mining * Karviná * Orlová * Czech Republic Subject RIV: DE - Earth Magnetism, Geodesy, Geography http://humangeographies.org.ro/articles/81/8_1_14_1_martinat.pdf

  14. State of the eyes in welders of Division M-5, Brown Coal Mine in Belchatow

    Energy Technology Data Exchange (ETDEWEB)

    Gos, R.; Stepien, J.; Horowski, P.

    1984-01-01

    Sight organ impairments have been compared in a group of M-5 Division welders, Brown Coal Mine in Belchatow, and control group of randomly selected administration workers. In the group of welders statistically more frequent were degenerative changes in the eye macula, melanomatosis and conjunctivitis. Those with changes in the area of the macua lutea and melanosis conjunctivae should undergo periodic ophthalmological control (dispensary groups).

  15. Rhizosphere soil microbial index of tree species in a coal mining ecosystem

    Energy Technology Data Exchange (ETDEWEB)

    Sinha, S.; Masto, R.E.; Ram, L.C.; Selvi, V.A.; Srivastava, N.K.; Tripathi, R.C.; George, J. [Central Institute of Mining & Fuel Research, Dhanbad (India)

    2009-09-15

    Microbial characterization of the tree rhizosphere provides important information relating to the screening of tree species for re-vegetation of degraded land. Rhizosphere soil samples collected from a few predominant tree species growing in the coal mining ecosystem of Dhanbad, India, were analyzed for soil organic carbon (SOC), mineralizable N, microbial biomass carbon (MBC), active microbial biomass carbon (AMBC), basal soil respiration (BSR), and soil enzyme activities (dehydrogenase, urease, catalase, phenol oxidase, and peroxidase). Principal component analysis was employed to derive a rhizosphere soil microbial index (RSMI) and accordingly, dehydrogenase, BSR/MBC, MBC/SOC, EC, phenol oxidase and AMBC were found to be the most critical properties. The observed values for the above properties were converted into a unitless score (0-1.00) and the scores were integrated into RSMI. The tree species could be arranged in decreasing order of the RSMI as: A. marmelos (0.718), A. indica (0.715), Bauhinia bauhinia (0.693), B. monosperma (0.611), E. jambolana (0.601), Moringa oleifera (0.565), Dalbergia sissoo (0.498), T indica (0.488), Morus alba (0.415), F religiosa (0.291), Eucalyptus sp. (0.232) and T grandis (0.181). It was concluded that tree species in coal mining areas had diverse effects on their respective rhizosphere microbial processes, which could directly or indirectly determine the survival and performance of the planted tree species in degraded coal mining areas. Tree species with higher RSMI values could be recommended for re-vegetation of degraded coal mining area.

  16. A Wireless LAN and Voice Information System for Underground Coal Mine

    OpenAIRE

    Yu Zhang; Wei Yang; Dongsheng Han; Young-Il Kim

    2014-01-01

    In this paper we constructed a wireless information system, and developed a wireless voice communication subsystem based on Wireless Local Area Networks (WLAN) for underground coal mine, which employs Voice over IP (VoIP) technology and Session Initiation Protocol (SIP) to achieve wireless voice dispatching communications. The master control voice dispatching interface and call terminal software are also developed on the WLAN ground server side to manage and implement the voice dispatching co...

  17. Anchor-Free Localization Method for Mobile Targets in Coal Mine Wireless Sensor Networks

    OpenAIRE

    Pei, Zhongmin; Deng, Zhidong; Xu, Shuo; Xu, Xiao

    2009-01-01

    Severe natural conditions and complex terrain make it difficult to apply precise localization in underground mines. In this paper, an anchor-free localization method for mobile targets is proposed based on non-metric multi-dimensional scaling (Multi-dimensional Scaling: MDS) and rank sequence. Firstly, a coal mine wireless sensor network is constructed in underground mines based on the ZigBee technology. Then a non-metric MDS algorithm is imported to estimate the reference nodes’ location. Fi...

  18. Comparison of Methane Control Methods in Polish and Vietnamese Coal Mines

    Science.gov (United States)

    Borowski, Marek; Kuczera, Zbigniew

    2018-03-01

    Methane hazard often occurs in hard coal mines and causes very serious accidents and can be the reason of methane or methane and coal dust explosions. History of coal mining shows that methane released from the rock mass to the longwall area was responsible for numerous mining disasters. The main source of methane are coal deposits because it is autochthonous gas and is closely related with carbonification and forming of coal deposits. Degree of methane saturation in coal deposits depends on numerous factors; mainly on presence or lack of insulating layers in cover deposit that allow or do not on degasification and easily methane outflow into surroundings. Hence in coal mining there are coal deposits that contain only low degree of methane saturation in places where is lack of insulating layers till high in methane coal deposits occurring in insulating claystones or in shales. Conducting mining works in coal deposits of high methane hazard without using of special measures to combat (ventilation, methane drainage) could be impossible. Control of methane hazard depends also on other co-occuring natural dangers for which used preventive actions eliminate methane hazard. Safety in mines excavating coal deposits saturated with methane depends on the correct estimation of methane hazard, drawn up forecasts, conducted observations, hazard control as well as undertaken prevention measures. Methane risk prevention includes identification and control methods of methane hazards as well as means of combating the explosive accumulation of methane in longwall workings. The main preventive actions in underground coal mines are: effective ventilation that prevents forming of methane fuses or placed methane accumulation in headings ventilated by airflow created by main fans and in headings with auxiliary ventilation, methane drainage using drain holes that are drilled from underground headings or from the surface, methanometry control of methane concentration in the air; location

  19. Comparison of Methane Control Methods in Polish and Vietnamese Coal Mines

    Directory of Open Access Journals (Sweden)

    Borowski Marek

    2018-01-01

    Full Text Available Methane hazard often occurs in hard coal mines and causes very serious accidents and can be the reason of methane or methane and coal dust explosions. History of coal mining shows that methane released from the rock mass to the longwall area was responsible for numerous mining disasters. The main source of methane are coal deposits because it is autochthonous gas and is closely related with carbonification and forming of coal deposits. Degree of methane saturation in coal deposits depends on numerous factors; mainly on presence or lack of insulating layers in cover deposit that allow or do not on degasification and easily methane outflow into surroundings. Hence in coal mining there are coal deposits that contain only low degree of methane saturation in places where is lack of insulating layers till high in methane coal deposits occurring in insulating claystones or in shales. Conducting mining works in coal deposits of high methane hazard without using of special measures to combat (ventilation, methane drainage could be impossible. Control of methane hazard depends also on other co-occuring natural dangers for which used preventive actions eliminate methane hazard. Safety in mines excavating coal deposits saturated with methane depends on the correct estimation of methane hazard, drawn up forecasts, conducted observations, hazard control as well as undertaken prevention measures. Methane risk prevention includes identification and control methods of methane hazards as well as means of combating the explosive accumulation of methane in longwall workings. The main preventive actions in underground coal mines are: effective ventilation that prevents forming of methane fuses or placed methane accumulation in headings ventilated by airflow created by main fans and in headings with auxiliary ventilation, methane drainage using drain holes that are drilled from underground headings or from the surface, methanometry control of methane concentration in

  20. A new approach to estimate fugitive methane emissions from coal mining in China

    Energy Technology Data Exchange (ETDEWEB)

    Ju, Yiwen, E-mail: juyw03@163.com [Key Laboratory of Computational Geodynamics of Chinese Academy Sciences, Beijing 100049 (China); College of Earth Science, University of Chinese Academy Sciences, Beijing 100049 (China); Sun, Yue [Key Laboratory of Computational Geodynamics of Chinese Academy Sciences, Beijing 100049 (China); College of Earth Science, University of Chinese Academy Sciences, Beijing 100049 (China); Sa, Zhanyou [Department of Safety Engineering, Qingdao Technological University, Qingdao 266520 (China); Pan, Jienan [School of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000 (China); Wang, Jilin [School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116 (China); Hou, Quanlin; Li, Qingguang; Yan, Zhifeng [Key Laboratory of Computational Geodynamics of Chinese Academy Sciences, Beijing 100049 (China); College of Earth Science, University of Chinese Academy Sciences, Beijing 100049 (China); Liu, Jie [Department of Safety Engineering, Qingdao Technological University, Qingdao 266520 (China)

    2016-02-01

    Developing a more accurate greenhouse gas (GHG) emissions inventory draws too much attention. Because of its resource endowment and technical status, China has made coal-related GHG emissions a big part of its inventory. Lacking a stoichiometric carbon conversion coefficient and influenced by geological conditions and mining technologies, previous efforts to estimate fugitive methane emissions from coal mining in China has led to disagreeing results. This paper proposes a new calculation methodology to determine fugitive methane emissions from coal mining based on the domestic analysis of gas geology, gas emission features, and the merits and demerits of existing estimation methods. This new approach involves four main parameters: in-situ original gas content, gas remaining post-desorption, raw coal production, and mining influence coefficient. The case studies in Huaibei–Huainan Coalfield and Jincheng Coalfield show that the new method obtains the smallest error, + 9.59% and 7.01% respectively compared with other methods, Tier 1 and Tier 2 (with two samples) in this study, which resulted in + 140.34%, + 138.90%, and − 18.67%, in Huaibei–Huainan Coalfield, while + 64.36%, + 47.07%, and − 14.91% in Jincheng Coalfield. Compared with the predominantly used methods, this new one possesses the characteristics of not only being a comparably more simple process and lower uncertainty than the “emission factor method” (IPCC recommended Tier 1 and Tier 2), but also having easier data accessibility, similar uncertainty, and additional post-mining emissions compared to the “absolute gas emission method” (IPCC recommended Tier 3). Therefore, methane emissions dissipated from most of the producing coal mines worldwide could be more accurately and more easily estimated. - Highlights: • Propose a new method to estimate fugitive methane emissions from coal mining. • New method has accurate prediction for CMM emissions without activity data updating. • Mining

  1. Strategies to monitor non-homogeneous atmospheres in sealed off panels in coal mines.

    CSIR Research Space (South Africa)

    Hardman, DR

    2001-06-01

    Full Text Available of international practice 7 2.1 Monitoring of atmospheres in inaccessible areas of 8 coal mines - practices in Europe and North America 2.1.1 Introduction 8 2.1.2 Monitoring techniques 9 2.1.3 Monitoring... 27 4.2 Currently available technologies 28 4.3 Alternative technologies 29 5 Conclusions and recommendations 29 6 References 30 6 List of figures Page Figure 2.1.2 Schematic of tube bundle...

  2. Characterization of particulate emissions from Australian open-cut coal mines: Toward improved emission estimates.

    Science.gov (United States)

    Richardson, Claire; Rutherford, Shannon; Agranovski, Igor

    2018-06-01

    Given the significance of mining as a source of particulates, accurate characterization of emissions is important for the development of appropriate emission estimation techniques for use in modeling predictions and to inform regulatory decisions. The currently available emission estimation methods for Australian open-cut coal mines relate primarily to total suspended particulates and PM 10 (particulate matter with an aerodynamic diameter available relating to the PM 2.5 (currently available emission estimation techniques, this paper presents results of sampling completed at three open-cut coal mines in Australia. The monitoring data demonstrate that the particulate size fraction varies for different mining activities, and that the region in which the mine is located influences the characteristics of the particulates emitted to the atmosphere. The proportion of fine particulates in the sample increased with distance from the source, with the coarse fraction being a more significant proportion of total suspended particulates close to the source of emissions. In terms of particulate composition, the results demonstrate that the particulate emissions are predominantly sourced from naturally occurring geological material, and coal comprises less than 13% of the overall emissions. The size fractionation exhibited by the sampling data sets is similar to that adopted in current Australian emission estimation methods but differs from the size fractionation presented in the U.S. Environmental Protection Agency methodology. Development of region-specific emission estimation techniques for PM 10 and PM 2.5 from open-cut coal mines is necessary to allow accurate prediction of particulate emissions to inform regulatory decisions and for use in modeling predictions. Development of region-specific emission estimation techniques for PM 10 and PM 2.5 from open-cut coal mines is necessary to allow accurate prediction of particulate emissions to inform regulatory decisions and for

  3. Environmental management zoning for coal mining in mainland China based on ecological and resources conditions.

    Science.gov (United States)

    Geng, Haiqing; Chen, Fan; Wang, Zhiyuan; Liu, Jie; Xu, Weihua

    2017-05-01

    The purpose of this research is to establish an environmental management zoning for coal mining industry which is served as a basis for making environmental management policies. Based on the specific impacts of coal mining and regional characteristics of environment and resources, the ecological impact, water resources impact, and arable land impact are chose as the zoning indexes to construct the index system. The ecological sensitivity is graded into three levels of low, medium, and high according to analytical hierarchy processes and gray fixed weight clustering analysis, and the water resources sensitivity is divided into five levels of lower, low, medium, high, and higher according to the weighted sum of sub-indexes, while only the arable land sensitive zone was extracted on the basis of the ratio of arable land to the county or city. By combining the ecological sensitivity zoning and the water resources sensitive zoning and then overlapping the arable-sensitive areas, the mainland China is classified into six types of environmental management zones for coal mining except to the forbidden exploitation areas.

  4. A Fiber Bragg Grating-Based Monitoring System for Roof Safety Control in Underground Coal Mining

    Directory of Open Access Journals (Sweden)

    Yiming Zhao

    2016-10-01

    Full Text Available Monitoring of roof activity is a primary measure adopted in the prevention of roof collapse accidents and functions to optimize and support the design of roadways in underground coalmines. However, traditional monitoring measures, such as using mechanical extensometers or electronic gauges, either require arduous underground labor or cannot function properly in the harsh underground environment. Therefore, in this paper, in order to break through this technological barrier, a novel monitoring system for roof safety control in underground coal mining, using fiber Bragg grating (FBG material as a perceived element and transmission medium, has been developed. Compared with traditional monitoring equipment, the developed, novel monitoring system has the advantages of providing accurate, reliable, and continuous online monitoring of roof activities in underground coal mining. This is expected to further enable the prevention of catastrophic roof collapse accidents. The system has been successfully implemented at a deep hazardous roadway in Zhuji Coal Mine, China. Monitoring results from the study site have demonstrated the advantages of FBG-based sensors over traditional monitoring approaches. The dynamic impacts of progressive face advance on roof displacement and stress have been accurately captured by the novel roadway roof activity and safety monitoring system, which provided essential references for roadway support and design of the mine.

  5. Health and Safety Assessment in Lakhra Coal Mines and Its Mitigation Measures

    Directory of Open Access Journals (Sweden)

    Sallahuddin Panhwar

    2017-04-01

    Full Text Available The coal mine excavation, transportation and coal cutting process are involved in hazards and risks that can result in fatalities, injuries and diseases, if these are not properly managed. This study has been undertaken for assessment of the safety and health issues amongst the mines workers. Convenience sampling technique was exercised upon 97 mine workers and interviewed with the help of set questionnaire. Personnel protection to workplace environment was monitored by using physical observation and scientific analysis. All parameters were measured against national and international protocols pertaining to labor law at coal mines. It has been determined that very high risk was persisting while mine excavation, coal cutting and transportation processes. Previous record of last five years was suggesting that 04 deaths happened due to roof fall, 03 fatalities occurred through suffocation by inhaling toxic gases, one causality happened via rope haulage pulley, and also one death due to stone fall down from mine shaft. 121 workers injured in different kinds of accidents within five years. It has been learnt from in-depth analysis that maximum of health risk and subsequent health damages are triggering due to lack of awareness, non-compliance of labor as well as mines laws. Thus, it is recommended that government should not allow coal mining contractors and companies, those which are failing in compliance with the suggested standards.

  6. Application Research on Testing Efficiency of Main Drainage Pump in Coal Mine Using Thermodynamic Theories

    Directory of Open Access Journals (Sweden)

    Deyong Shang

    2017-01-01

    Full Text Available The efficiency of a drainage pump should be tested at regular intervals to master the status of the drainage pump in real time and thus achieve the goal of saving energy. The ultrasonic flowmeter method is traditionally used to measure the flow of the pump. But there are some defects in this kind of method of underground coal mine. This paper first introduces the principle of testing the main drainage pump efficiency in coal mine using thermodynamic theories, then analyzes the energy transformation during the process of draining water, and finally derives the calculation formulae of the pump efficiency, which meet the on-site precision of engineering. On the basis of analyzing the theories, the protective sleeve and the base of the temperature sensor are designed to measure the water temperature at inlet and outlet of the pump. The efficiencies of pumps with two specifications are measured, respectively, by using the thermodynamic method and ultrasonic flowmeter method. By contrast, the results show that thermodynamic method can satisfy the precision of the testing requirements accuracy for high-flow and high-lift drainage pump under normal temperatures. Moreover, some measures are summed up to improve the accuracy of testing the pump efficiency, which are of guiding significance for on-site testing of the main drainage pump efficiency in coal mine.

  7. The South African coal mining industry: A need for a more efficient and collaborative supply chain

    Directory of Open Access Journals (Sweden)

    David Pooe

    2011-11-01

    Full Text Available It is estimated that about two-thirds of global coal is used for power generation and that, in the next 20 years, over 70% of the demand for coal will come from China and India. Coal accounts for approximately 41% of the world's electricity generation. Demand for thermal coal is influenced by factors that include availability, prices of competing products such as oil, gas and nuclear power, and the demand for electricity. The aim of this article is to provide an exposition of supply chain dynamics within the South African coal mining industry and to argue for a more efficient and collaborative supply chain. The authors attempt to investigate at local and global level, the current trends pertaining to the level of reserves, production and consumption of coal. The article further demonstrates the shortcomings of current logistics in meeting the demand for coal in both domestic and export markets. The article draws from secondary data sourced from academic papers, government and agency documents in the exposition of the coal mining supply chain. The paper concludes by recommending the need for a scientific study on supply chain constraints facing the coal mining industry in South Africa.

  8. Differences in frequency rates and classes of occupational accidents in copper ore and black coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Stecko, R.; Zacharzewski, J.

    1987-02-01

    This paper analyzes occupational accidents in copper mines and black coal mines in Poland from 1968 to 1985. Evaluates accident rate calculated per 1000 employees and per 100,000 t coal or copper ore output and distribution of accident classes characterized on the basis of miner absenteeism caused by an accident. Accident rate in coal mines calculated per 1,000 miners was: 58.5 in 1981, 51.0 in 1982, 39.5 in 1983, 36.6 in 1984 and 32.1 in 1985. Accident rate calculated per 100,000 t coal output was: 5.8 in 1980, 13.7 in 1981, 10.7 in 1982, 8.2 in 1983, 7.8 in 1984 and 6.7 in 1985. Curves showing accident rates and indices characterizing accident classes in 1968-1985 are plotted. Comparative evaluations of accident rate fluctuations in copper and coal mines suggest that these fluctuations are associated with causes other than mining and geologic conditions. Certain similiarities in accident rate fluctuations could be determined in spite of differing mining and geologic conditions and mine service life in the Lubin copper basin and Upper Silesia coal basin. 4 refs.

  9. Assessing metal pollution in ponds constructed for controlling runoff from reclaimed coal mines.

    Science.gov (United States)

    Miguel-Chinchilla, Leticia; González, Eduardo; Comín, Francisco A

    2014-08-01

    Constructing ponds to protect downstream ecosystems is a common practice in opencast coal mine reclamation. As these ponds remain integrated in the landscape, it is important to evaluate the extent of the effect of mine pollution on these ecosystems. However, this point has not been sufficiently addressed in the literature. The main objective of this work was to explore the metal pollution in man-made ponds constructed for runoff control in reclaimed opencast coal mines over time. To do so, we evaluated the concentration of ten heavy metals in the water, sediment, and Typha sp. in 16 runoff ponds ranging from 1 to 19 years old that were constructed in reclaimed opencast coal mines of northeastern Spain. To evaluate degree of mining pollution, we compared these data to those from a pit lake created in a local unreclaimed mine and to local streams as an unpolluted reference, as well as comparing toxicity levels in aquatic organisms. The runoff ponds showed toxic concentrations of Al, Cu, and Ni in the water and As and Ni in the sediment, which were maintained over time. Metal concentrations in runoff ponds were higher than in local streams, and macrophytes showed high metal concentrations. Nevertheless, metal concentrations in water and sediment in runoff ponds were lower than those in the pit lake. This study highlights the importance of mining reclamation to preserve the health of aquatic ecosystems and suggests the existence of chronic metal toxicity in the ponds, potentially jeopardizing pond ecological functions and services.

  10. Analytical study on U/G coal mine CPT and inferences

    Energy Technology Data Exchange (ETDEWEB)

    Dey, N.C.; Mukhopadhyay, S. [Bengal Engineering College, Howrath (India). Dept. of Mining and Geology

    1999-08-01

    The analytical aspects of underground CPT (coal mine cost per tonne), which varies from mine to mine due to the different weightages of various contributing factors, are described. The CPT is not only dictated by the increasing wages but also by the availability of man-hour and accountability of machine utilization. An optimal blend of labour-intensive and machine-intensive methods involving least investment and operating cost, is a challenge for the coal industry. Technology upgradation and implementation, higher skill and morale, excellence in planning and monitoring, optimization in capacity utilization, and better consumer acceptability of coal will consistently improve the financial health of the coal mining sector. Other factors which will help improve the financial health of coal mining industries are (1) cost propaganda like safety week celebration; (2) cost consciousness at all levels; (3) noticeboard comprising the cost of man-hour and machine- hour; (4) no idle time for men as well as machine; (5) care to increase the life of machines; (6) scope of target amendment in a year; (7) prior to introducing costly machines, due weightage to be given on coal grade, mine life, geo-mining conditions; and (8) award to most economic mine and punishment to others rated below the BEP (break- even point). 2 refs., 3 figs.

  11. Strength Reduction of Coal Pillar after CO2 Sequestration in Abandoned Coal Mines

    Directory of Open Access Journals (Sweden)

    Qiuhao Du

    2017-02-01

    Full Text Available CO2 geosequestration is currently considered to be the most effective and economical method to dispose of artificial greenhouse gases. There are a large number of coal mines that will be scrapped, and some of them are located in deep formations in China. CO2 storage in abandoned coal mines will be a potential option for greenhouse gas disposal. However, CO2 trapping in deep coal pillars would induce swelling effects of coal matrix. Adsorption-induced swelling not only modifies the volume and permeability of coal mass, but also causes the basic physical and mechanical properties changing, such as elastic modulus and Poisson ratio. It eventually results in some reduction in pillar strength. Based on the fractional swelling as a function of time and different loading pressure steps, the relationship between volumetric stress and adsorption pressure increment is acquired. Eventually, this paper presents a theory model to analyze the pillar strength reduction after CO2 adsorption. The model provides a method to quantitatively describe the interrelation of volumetric strain, swelling stress, and mechanical strength reduction after gas adsorption under the condition of step-by-step pressure loading and the non-Langmuir isothermal model. The model might have a significantly important implication for predicting the swelling stress and mechanical behaviors of coal pillars during CO2 sequestration in abandoned coal mines.

  12. Development of mechanization of extraction in underground coal mining (part I)

    Energy Technology Data Exchange (ETDEWEB)

    Strzeminski, J

    1984-01-01

    The history of underground coal mining and history of mechanizing underground operations of cutting, strata control, mine haulage, hoisting and ventilation are discussed. The following development periods are characterized: until 1769 (date of steam engine invention by J. Watt), from 1769 to 1945 (period of partial mechanization of operations in underground coal mining), from 1945 (period of comprehensive mechanization and automation). A general description of mining in the first development period is given. Evaluation of the second development period concentrates on mechanization in underground coal mining. The following equipment types are described: cutting (pneumatic picks and pneumatic drills, coal saws developed by Eickhoff, coal cutters developed after 1870, cutter loaders patented in 1925-1927, coal plows and coal cutter loaders), mine haulage (mine cars, conveyors developed in the United Kingdom, Germany and Russia, Poland), strata control at working faces (timber props, steel friction props, roof bars), strata control in the goaf (room and pillar mining, stowing, minestone utilization for stowing in Upper Silesia, hydraulic stowing in Upper Silesia). 5 references.

  13. Rhizobia Isolated from Coal Mining Areas in the Nodulation and Growth of Leguminous Trees

    Directory of Open Access Journals (Sweden)

    Ginaini Grazielli Doin de Moura

    2016-01-01

    Full Text Available ABSTRACT An alternative for recovery of areas degraded by coal mining is revegetation with rapidly growing leguminous trees, which often do not establish in low fertility soils. The objective of this study was to evaluate the efficiency of native rhizobia isolated from coal mining areas in the nodulation and growth of leguminous trees. We isolated 19 strains of rhizobia from a degraded soil near Criciúma, SC, Brazil, and evaluated the nodulation and growth-promoting capacity of the inoculated isolates for bracatinga (Mimosa scabrella, maricá (M. bimucronata and angico-vermelho (Parapiptadenia rigida. Isolates UFSC-B2, B6, B8, B9, B11 and B16 were able to nodulate bracatinga, providing average increases of 165 % in shoot dry matter, with a significant contribution to N accumulation. Isolates UFSC-B5, B12, and M8 favored nodulation and growth of maricá, especially isolate UFSC-B12, which promoted increases of 370 % in N accumulation compared to treatment with N fertilizer. All strains were inefficient in promoting growth and N uptake by angico-vermelho. In conclusion, isolation and use of selected rhizobia for bracatinga and maricá plant inoculation can contribute to the growth and accumulation of N, with prospects for use in programs for revegetation of degraded soils in coal mining areas.

  14. Features of the Asynchronous Correlation between the China Coal Price Index and Coal Mining Accidental Deaths

    Science.gov (United States)

    Huang, Yuecheng; Cheng, Wuyi; Luo, Sida; Luo, Yun; Ma, Chengchen; He, Tailin

    2016-01-01

    The features of the asynchronous correlation between accident indices and the factors that influence accidents can provide an effective reference for warnings of coal mining accidents. However, what are the features of this correlation? To answer this question, data from the China coal price index and the number of deaths from coal mining accidents were selected as the sample data. The fluctuation modes of the asynchronous correlation between the two data sets were defined according to the asynchronous correlation coefficients, symbolization, and sliding windows. We then built several directed and weighted network models, within which the fluctuation modes and the transformations between modes were represented by nodes and edges. Then, the features of the asynchronous correlation between these two variables could be studied from a perspective of network topology. We found that the correlation between the price index and the accidental deaths was asynchronous and fluctuating. Certain aspects, such as the key fluctuation modes, the subgroups characteristics, the transmission medium, the periodicity and transmission path length in the network, were analyzed by using complex network theory, analytical methods and spectral analysis method. These results provide a scientific reference for generating warnings for coal mining accidents based on economic indices. PMID:27902748

  15. Study on bubble column humidification and dehumidification system for coal mine wastewater treatment.

    Science.gov (United States)

    Gao, Penghui; Zhang, Meng; Du, Yuji; Cheng, Bo; Zhang, Donghai

    2018-04-01

    Water is important resource for human survival and development. Coal mine wastewater (CMW) is a byproduct of the process of coal mining, which is about 7.0 × 10 10 m 3 in China in 2016. Considering coal mine wastewater includes different ingredients, a new bubble column humidification and dehumidification system is proposed for CMW treatment. The system is mainly composed of a bubble column humidification and dehumidification unit, solar collector, fan and water tank, in which air is used as a circulating medium. The system can avoid water treatment component blocking for reverse osmosis (RO) and multi effect distillation (MED) dealing with CMW, and produce water greenly. By analysis of heat and mass transfer, the effects of solar radiation, air bubble velocity and mine water temperature on water treatment production characteristics are studied. Compared with other methods, thermal energy consumption (TEC) of bubble column humidification and dehumidification (BCHD) is moderate, which is about 700 kJ/kg (powered by solar energy). The results would provide a new method for CMW treatment and insights into the efficient coal wastewater treatment, besides, it helps to identify the parameters for the technology development in mine water treatment.

  16. GIS-based Analysis of LS Factor under Coal Mining Subsidence Impacts in Sandy Region

    Directory of Open Access Journals (Sweden)

    W. Xiao

    2014-09-01

    Full Text Available Coal deposits in the adjacent regions of Shanxi, Shaanxi, and Inner Mongolia province (SSI account for approximately two-thirds of coal in China; therefore, the SSI region has become the frontier of coal mining and its westward movement. Numerous adverse impacts to land and environment have arisen in these sandy, arid, and ecologically fragile areas. Underground coal mining activities cause land to subside and subsequent soil erosion, with slope length and slope steepness (LS as the key influential factor. In this investigation, an SSI mining site was chosen as a case study area, and 1 the pre-mining LS factor was obtained using a digital elevation model (DEM dataset; 2 a mining subsidence prediction was implemented with revised subsidence prediction factors; and 3 the post-mining LS factor was calculated by integrating the pre-mining DEM dataset and coal mining subsidence prediction data. The results revealed that the LS factor leads to some changes in the bottom of subsidence basin and considerable alterations at the basin’s edges of basin. Moreover, the LS factor became larger in the steeper terrain under subsidence impacts. This integrated method could quantitatively analyse LS changes and spatial distribution under mining impacts, which will benefit and provide references for soil erosion evaluations in this region

  17. Research on magnetic excitation model of magnetic flux leakage for coal mine hoisting wire rope

    Directory of Open Access Journals (Sweden)

    Jie Tian

    2015-11-01

    Full Text Available This study presents the optimal design of a magnetic excitation model for developing a nondestructive sensor for coal mine hoist wire ropes. The model was established using axial-symmetry finite-element analysis and calculations. The influence of the excitation device parameters on the local magnetization effect of the wire rope was investigated in detail using the axial-symmetry finite-element model. The excitation model parameters of the sensor were optimally designed using a combination of finite-element analysis and an optimization method. The experiments were performed to measure the leakage flux and evaluate the performance of the optimally designed sensor. The results show that the sensor based on the newly designed excitation model can not only improve the signal-to-noise ratio for defect detection in a coal mine hoist wire rope by 11% compared to an existing sensor but also reliably detect small defects with a high detection speed (5 m/s along the length of the coal mine wire rope.

  18. Comparative study on efficiency performance of listed coal mining companies in China and the US

    International Nuclear Information System (INIS)

    Fang, Hong; Wu, Junjie; Zeng, Catherine

    2009-01-01

    Continually rising energy prices in global markets highlights a serious concern about the need to improve energy efficiency and the efficiency in energy sector in many countries. China, as one of the fastest growing countries in the world and the largest coal producer, has high coal consumption but a low recovery rate of coal utilization. Coal efficiency and the efficiency in coal industry have therefore attracted a great deal of attention from Chinese policy makers, coal firms and academics. This study attempts to compare the relative technical efficiency performance of listed coal mining companies in China and the US using CCR and BCC models in the advanced DEA linear programming. The results show that the level of relative efficiency in Chinese coal mining enterprises, regardless of total technical efficiency or decomposed pure technical and scale efficiency, is much lower than in American coal firms. The study also highlights the input resources that cause the inefficiency of Chinese coal mining companies. Furthermore, in-depth discussion and analysis of how the institutional environments of the two countries could cause the differences are provided. (author)

  19. Interpretation of groundwater origin in the Velenje coal mine on the basis of isotope composition

    Directory of Open Access Journals (Sweden)

    Janko Urbanc

    2002-12-01

    Full Text Available The aim of the investigation was to determine the isotopic properties of cave waters from the Velenje coal mine and define the recharge areas of individual aquifers. With regard to the oxygen isotope composition, groundwater in the Velenje coal mine can beclassified into three types. Typical d18O values of the first type are around -9 ‰ and are found in surface waters in the vicinity of the mine, therefore it is supposed that these waters are recharged locally. The second type is represented mainly by waters from thelower part of the pliocene aquifer. The average oxygen composition of these waters is about -11 ‰. This isotope composition is considerably different from the isotope composition of recent waters from the mine’s vicinity, which leads to the conclusion that these are older, fossile waters. These waters also have a very high degree of mineralization and consequently conductivity. Waters of the third type have average δ18O values around -10 ‰ and originate mainly from triassic dolomites. These waters could be a mixture of recentand old waters, but it is also possible that they flow into the coal mine from the higher areas of Paški Kozjak.

  20. Sustainable application of reciprocating gas engines operating on coal mine methane

    Energy Technology Data Exchange (ETDEWEB)

    Lee, J.; Teo, T. [Caterpillar China Investment Co., Beijing (China); Tnay, C.H. [Westrac Inc., Beijing (China)

    2008-07-01

    According to the World Coal Institute, coal provides 25 per cent of worldwide primary energy needs and generates 40 per cent of the world's electricity. China produces the largest amount of hard coal. The anthropogenic release of methane (CH{sub 4}) into the environment is a byproduct of the coal mining process. The global warming potential of this methane continues to draw attention around the world. In particular, China's government has recognized the need for environmental responsibility in the pursuit of greater power production. The Kyoto Protocol requires developed countries to reduce their greenhouse gas emissions and targets must be met within a five-year time frame between 2008 and 2012. Sequestering coal mine methane (CMM) as an alternative fuel for reciprocating gas engine generator sets is a mature and proven technology for greenhouse gas mitigation. Prior to commissioning CMM-fueled power systems, the methane gas composition must be evaluated. An integrated systems approach can then be used to develop a CMM-fueled power project. This paper discussed the sustainable application of reciprocating gas engines operating on coal mine methane. It discussed the Kyoto Protocol, clean development mechanism, and CMM as compared to other fuel sources. It was concluded that there is considerable opportunity for growth in the Asia-Pacific region for electric power applications using CMM. 4 refs., 12 figs.

  1. 30 CFR 77.1111 - Welding, cutting, soldering; use of fire extinguisher.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Welding, cutting, soldering; use of fire... OF UNDERGROUND COAL MINES Fire Protection § 77.1111 Welding, cutting, soldering; use of fire extinguisher. One portable fire extinguisher shall be provided at each location where welding, cutting, or...

  2. Environmental impact of coal mining on the natural environment in Poland

    International Nuclear Information System (INIS)

    Wysocka, M.; Chalupnik, S.; Michalik, B.; Skowronek, J.; Skubacz, K.

    2002-01-01

    Saline waters occurring in underground coal mines in Poland often contain natural radioactive isotopes, mainly 226 Ra from uranium series and 228 Ra from thorium series. Approximately 40% of total amount of radium remains underground in a form of radioactive deposits, but 225 MBq of 226 Ra and 400 MBq of 228 Ra are released daily to the rivers with mine effluents. Technical measures as spontaneous precipitation of radium in gobs, decreasing of amounts of water inflows into underground working etc. have been undertaken in several coal mines and as the result total amount of radium released to the surface waters diminished of about 60% during last 5-6 years. Mine waters can cause a severe impact on the natural environment, mainly due to its salinity. But also the enhancement of radium concentration in river waters, bottom sediments and vegetation is observed. Sometimes radium concentration in rivers exceeds 0.7 kBq/m 3 , which is due to Polish law a permissible level for waste waters. The extended investigations were performed in all coal mines and on this basis the radium balance in effluents has been calculated. Measurements done in the vicinity of mine water's settling ponds and in rivers gave us an opportunity to survey radium behaviour in river waters and the range of contamination. Solid waste materials with enhanced natural radioactivity have been produced in huge amounts in power and coal industries in Poland. There are two main sources of these waste products. As a result of combustion of coal in power plants low radioactive waste materials are produced, with 226 Ra concentration seldom exceeding few hundreds of Bq/kg. Different situation is observed in coal mines, where as a result of precipitation of radium from radium-bearing waters radioactive deposits are formed. Sometimes natural radioactivity of such materials is very high, in case of scaling from coal mines radium concentration may reach 400 000 Bq/kg - similar activity as for 3% uranium ore

  3. Key Technologies and Applications of Gas Drainage in Underground Coal Mine

    Science.gov (United States)

    Zhou, Bo; Xue, Sheng; Cheng, Jiansheng; Li, Wenquan; Xiao, Jiaping

    2018-02-01

    It is the basis for the long-drilling directional drilling, precise control of the drilling trajectory and ensuring the effective extension of the drilling trajectory in the target layer. The technology can be used to complete the multi-branch hole construction and increase the effective extraction distance of the coal seam. The gas drainage and the bottom grouting reinforcement in the advanced area are realized, and the geological structure of the coal seam can be proved accurately. It is the main technical scheme for the efficient drainage of gas at home and abroad, and it is applied to the field of geological structure exploration and water exploration and other areas. At present, the data transmission method is relatively mature in the technology and application, including the mud pulse and the electromagnetic wave. Compared with the mud pulse transmission mode, the electromagnetic wave transmission mode has obvious potential in the data transmission rate and drilling fluid, and it is suitable for the coal mine. In this paper, the key technologies of the electromagnetic wave transmission mode are analyzed, including the attenuation characteristics of the electromagnetic transmission channel, the digital modulation scheme, the channel coding method and the weak signal processing technology. A coal mine under the electromagnetic wave drilling prototype is developed, and the ground transmission experiments and down hole transmission test are carried out. The main work includes the following aspects. First, the equivalent transmission line method is used to establish the electromagnetic transmission channel model of coal mine drilling while drilling, and the attenuation of the electromagnetic signal is measured when the electromagnetic channel measured. Second, the coal mine EM-MWD digital modulation method is developed. Third, the optimal linear block code which suitable for EM-MWD communication channel in coal mine is proposed. Fourth, the noise characteristics

  4. Description of the physical environment an coal-mining history of West-Central Indiana, with emphasis on six small watersheds

    Science.gov (United States)

    Martin, Jeffrey D.; Crawford, Charles G.; Duwelius, Richard F.; Renn, Danny E.

    1990-01-01

    This report describes the physical and human environment and coal-mining history of west-central Indiana, with emphasis on six small watersheds selected for study of the hydrologic effects of surface coal mining. The report summarizes information on the geology, geomorphology, soils, climate, hydrology, water use, land use, population, and coal-mining history of Clay, Owen, Sullivan, and Vigo Counties in Indiana. Site-specific information is given on the morphology, geology, soils, land use, coal-mining history, and hydrologic instrumentation of the six watersheds, which are each less than 3 square miles in area.

  5. July 2011 Memorandum: Improving EPA Review of Appalachian Surface Coal Mining Operations Under the Clean Water Act, National Environmental Policy Act, and the Environmental Justice Executive Order

    Science.gov (United States)

    Memorandum: Improving EPA Review of Appalachian Surface Coal Mining Operations Under the Clean Water Act, National Environmental Policy Act, and the Environmental Justice Executive Order, July 21, 2011

  6. Summary of biological investigations relating to surface-water quality in the Kentucky River Basin, Kentucky

    International Nuclear Information System (INIS)

    Bradfield, A.D.; Porter, S.D.

    1990-01-01

    The Kentucky River basin, an area of approximately 7,000 sq mi, is divided into five hydrologic units that drain parts of three physiographic regions. Data on aquatic biological resources were collected and reviewed to assess conditions in the major streams for which data were available. The North, Middle, and south Forks of the Kentucky River are in the Eastern Coal Field physiographic region. Streams in this region are affected by drainage from coal mines and oil and gas operations, and many support only tolerant biotic stream forms. The Kentucky River from the confluence of the three forks to the Red River, is in the Knobs physiographic region. Oil and gas production operations and point discharges from municipalities have affected many streams in this region. The Red River, a Kentucky Wild River, supported a unique flora and fauna but accelerated sedimentation has eliminated many species of mussels. The Millers Creek drainage is affected by brines discharged from oil and gas operations, and some reaches support only halophilic algae and a few fish. The Kentucky River from the Red River to the Ohio River is in the Bluegrass physiographic region. Heavy sediment loads and sewage effluent from urban centers have limited the aquatic biota in this region. Silver Creek and South Elkhorn Creek have been particularly affected and aquatic communities in these streams are dominated by organisms tolerant of low dissolved oxygen concentrations. Biological data for other streams indicate that habitat and water quality conditions are favorable for most commonly occurring aquatic organisms. 205 refs., 7 figs., 1 tab

  7. An integrated environment monitoring system for underground coal mines--Wireless Sensor Network subsystem with multi-parameter monitoring.

    Science.gov (United States)

    Zhang, Yu; Yang, Wei; Han, Dongsheng; Kim, Young-Il

    2014-07-21

    Environment monitoring is important for the safety of underground coal mine production, and it is also an important application of Wireless Sensor Networks (WSNs). We put forward an integrated environment monitoring system for underground coal mine, which uses the existing Cable Monitoring System (CMS) as the main body and the WSN with multi-parameter monitoring as the supplementary technique. As CMS techniques are mature, this paper mainly focuses on the WSN and the interconnection between the WSN and the CMS. In order to implement the WSN for underground coal mines, two work modes are designed: periodic inspection and interrupt service; the relevant supporting technologies, such as routing mechanism, collision avoidance, data aggregation, interconnection with the CMS, etc., are proposed and analyzed. As WSN nodes are limited in energy supply, calculation and processing power, an integrated network management scheme is designed in four aspects, i.e., topology management, location management, energy management and fault management. Experiments were carried out both in a laboratory and in a real underground coal mine. The test results indicate that the proposed integrated environment monitoring system for underground coal mines is feasible and all designs performed well as expected.

  8. Analysing the environmental harms caused by coal mining and its protection measures in permafrost regions of Qinghai–Tibet Plateau

    Directory of Open Access Journals (Sweden)

    Wei Cao

    2017-09-01

    Full Text Available The coal mining has brought a series of ecological problems and environmental problems in permafrost regions. Taking Muli coal-mining area as an example, this article attempts to analyse the environmental harms caused by coal mining and its protection measures in permafrost regions of Qinghai–Tibet Plateau. This article analyses the influence of open mining on the surrounding permafrost around the open pit by using the numerical simulation. The results show that (1 based on the interrelation between coal mining and permafrost environment, these main environmental harm include the permafrost change and the natural environment change in cold regions; (2 once the surface temperature rises due to open mining, the permafrost will disappear with the increase of exploitation life. If considering the solar radiation, the climate conditions and the geological condition around the pit edge, the maximum thaw depth will be more than 2 m; (3 the protection measures are proposed to avoid the disadvantage impact on the permafrost environment caused by coal mining. It will provide a scientific basis for the resource development and environment protection in cold regions.

  9. Shale Failure Mechanics and Intervention Measures in Underground Coal Mines: Results From 50 Years of Ground Control Safety Research

    Science.gov (United States)

    2015-01-01

    Ground control research in underground coal mines has been ongoing for over 50 years. One of the most problematic issues in underground coal mines is roof failures associated with weak shale. This paper will present a historical narrative on the research the National Institute for Occupational Safety and Health has conducted in relation to rock mechanics and shale. This paper begins by first discussing how shale is classified in relation to coal mining. Characterizing and planning for weak roof sequences is an important step in developing an engineering solution to prevent roof failures. Next, the failure mechanics associated with the weak characteristics of shale will be discussed. Understanding these failure mechanics also aids in applying the correct engineering solutions. The various solutions that have been implemented in the underground coal mining industry to control the different modes of failure will be summarized. Finally, a discussion on current and future research relating to rock mechanics and shale is presented. The overall goal of the paper is to share the collective ground control experience of controlling roof structures dominated by shale rock in underground coal mining. PMID:26549926

  10. The safety regulation of small-scale coal mines in China: Analysing the interests and influences of stakeholders

    International Nuclear Information System (INIS)

    Song, Xiaoqian; Mu, Xiaoyi

    2013-01-01

    Small scale coal mines (SCMs) have played an important role in China’s energy supply. At the same time, they also suffer from many social, economic, environmental, and safety problems. The Chinese government has made considerable efforts to strengthen the safety regulation of the coal mining industry. Yet, few of these efforts have proven to be very effective. This paper analyzes the interests and influences of key stakeholders in the safety regulation of SCMs, which includes the safety regulator, the local government, the mine owner, and mineworkers. We argue that the effective regulation of coal mine safety must both engage and empower mineworkers. - Highlights: ► Small scale coal mines have played an important role in China's energy supply. ► We analyze the interests and influences of key stakeholders in the safety regulation of small coal mines. ► The mineworkers have the strongest interest but least influence. ► An effective regulation must engage the mineworkers, organize, and empower them.

  11. Purification of mine water of radium - The implementation of the technology in a coal mine

    International Nuclear Information System (INIS)

    Chalupnik, S.

    2002-01-01

    In underground coal mines in the Upper Silesian Coal Basin there are inflows of highly mineralised waters containing radium isotopes. These waters cause radioactive pollution of the natural environment in mining areas. Therefore cleaning of saline waters of radium is very important. Two types of radium-bearing waters were distinguished - one type containing radium and barium ions, but no sulphates (type A) and another one in which radium and sulphate ions are present but no barium (type B). A very efficient and inexpensive method of purification of saline waters, of Ba 2+ and Ra 2+ ions was developed and implemented in two coal mines. As the result of used technology, based on application of phosphogypsum as the cleaning agent, a significant decrease of radium discharge was achieved - daily of about 120 MBq of 226 Ra and 80 MBq of 228 Ra. Another type of radium waters does not contain barium ions, but contains sulphate ions SO 4 2- . There is no carrier for co-precipitation of radium so radium is transported with discharged waters to main rivers. Different method of purification from radium must be applied for such waters. Laboratory and field experiments were performed, and a cleaning method was chosen. For purification of saline waters - waste products from other industrial processes are applied. The method of purification have been applied in full technical scale in coal mine with very good results - of about 6 m 3 /min of radium-bearing waters is cleaned. Whole this process takes place in underground old workings without any contact of mining crew with radioactive deposits, which are produced during the process. As a result radium amount released to the natural environment was significantly diminished - approximately of about 90 MBq of 226 Ra per day and 150 MBq of 228 Ra. (author)

  12. The chosen needs of Polish restructured coal mines concerning the ventilation and struggling against gas, dust and air-conditioning dangers

    Energy Technology Data Exchange (ETDEWEB)

    Matuszewski, K. [Rudzka Coal Company (Poland)

    2001-07-01

    In this paper the selected needs of Polish coal mines with regard to their ventilation, minimisation of gas, dust and air-shortage dangers are presented. As far as ventilation is concerned: the need to broaden the use of the synchronic inverter cascades for speed regulation of main fans and the delivery of ventilation air duct to ensure a delivery of 11,117 m{sup 3}/s (6,5011,000 m{sup 3}/min) has been shown. As far as gas dangers are concerned there exists a need for the dissemination of dispatcher's help systems, training safety personnel in use of so called synoptic display table, a supply of 0,8311,67 m{sup 3}/s (501,100 m{sup 3}/min) of nitrogen in gaseous state for fire prevention as well as the use of modern mineral and chemical means have been mentioned. In order to help to reduce the dust danger the projected need for a modern generation of dry or wet dust collectors enabling a reduction in dustiness to NDS standards and equipping all longwalls with cutting machines with permanent and working installations of internal sprinklers have been postulated. In the case of air conditioning, the need to install 300 kW movable coolers with 300 kW single gear fans for the supply of 10 m{sup 3}/s (600 m{sup 3}/min) and an overall air pressure increase from 1600 to 2000 Pa has been presented. In the most dangerous coal mines attention has been drawn to the need for the installation and application of stationery coolers operating intermittently. 6 refs.

  13. THE DASHBOARD - STRATEGIC MANAGEMENT TOOL OF ACTIVITIES IN THE COAL MINING INDUSTRY

    Directory of Open Access Journals (Sweden)

    DINA IONELA-CLAUDIA

    2014-02-01

    Full Text Available In order to achieve the objectives at all levels and categories of functions in the unit, use multiple information systems, including the dashboard which is one of the management tools that responds very well to the rationale and supporting data of management decisions complementary to those provided by other media. In this respect, we try to calculate indicators organization currently working compartments of the coal mining units and will propose a series of indicators whose calculation we consider would be necessary for a detailed presentation as activity carried out and the improvement of management.

  14. Long term stability analysis of cast iron shaft linings after Coal Mine closure and flooding

    International Nuclear Information System (INIS)

    Hadj-Hassen, F.; Bienvenu, Y.; Noirel, J.F.; Metz, M.

    2005-01-01

    This paper presents the results of a study conducted to analyse the long term stability of the cast iron shaft lining after coal mine closure and flooding. The attention is mainly focused on the behaviour during the critical phase of flooding as well as the phase corresponding to the disappearance of the water pressure and the stabilization of the environment. This pluri-disciplinary study was conducted by a team combining specialists in rock mechanics who identified the main risks and the conditions of stability of the lining and specialists in metallurgy who studied the composition of the cast iron and its corrosion behaviour after exposure to mine water. (authors)

  15. Development of effective means of propaganda of safety techniques for coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Galushko, A.L.; Brusilovskiy, V.I.; Popov, I.I.

    1979-01-01

    Information letters about accidents in coal mines are systematically developed and sent to enterprises and organizations of the branch for practical use in preventive work on work protection and work safety. Information materials on advanced experience in prevention of accidents and traumatism are published in large quantities. Principal measures which have dramatically affected the reduction of the level of production traumatism are listed which merit dissemination in the branch. It is noted that the use of these means of propaganda of work safety makes it possible to improve preventive work on work safety and production sanitation in enterprises of the coal industry.

  16. Clinical X-ray characteristics of chronic bronchitis in workers of coal mines

    International Nuclear Information System (INIS)

    Sokolik, L.I.; Shumakov, A.V.; Doroshenko, A.N.

    1988-01-01

    100 workers of coal mines with chronic dusty bronchitis are examined. The roentgenological manifestations of different stages of the diseases with respect to the clinical picture and function of external breath according to the data of roentgenopneumopolygraphy, are characterized. The attention is paid to a most pronounced violation of external breath function in this category of patients. The peculiarities of clinico-roentgenological picture of dust bronchitis found should be taken into account when solving the problems of medical labor examination. 8 refs.; 3 figs

  17. Restoration of a coal-mine overburden dump - a case study

    Energy Technology Data Exchange (ETDEWEB)

    Singh, R.S.; Chaulya, S.K.; Tewary, B.K.; Dhar, B.B. [Central Mining Research Institute, Dhanbad (India)

    1996-03-01

    For the restoration of a coal-mine overburden dump, five tree species viz Delgergia sisoo, Azadirachta indica, Albizia procera, Delonix regia and Acacia nilotica were seeded to evaluate their germination and growth performance. Dalbergia sisoo was found to be the best early successional leguminous plant species showing maximum increase in shoot length and diameter on the mine dump. Therefore, it is recommended that the findings of this study be implemented on mass scale in the dry tropics of India. 10 refs., 6 figs.

  18. Impact of herbaceous vegetation on the enzymatic activity of coal mining wastes

    Energy Technology Data Exchange (ETDEWEB)

    Osmanczyk, D

    1980-01-01

    Differences in the enzymatic activity of reclaimed and crude dump wastes after coal mining were investigated. Due to the increased activity of six investigated enzymes (dehydrogenase, catalase, saccharase, BETA-glucosidase, urease and asparaginase), a favourable impact of herbaceous vegetation on the biological activation of the breeding-ground was noticed. Particularly in the case of sacharase and BETA-glucosidase, an increase of the enzymatic activity at a rate of several times or even more than ten times speaks not only for an adequate increase of the metabolic rate of carbohydrates but also for specific properties of the habitat which favours an adsorption of these enzymes. (6 refs.) (In Polish)

  19. Remote sensing of coal mine pollution in the upper Potomac River basin

    Science.gov (United States)

    1974-01-01

    A survey of remote sensing data pertinent to locating and monitoring sources of pollution resulting from surface and shaft mining operations was conducted in order to determine the various methods by which ERTS and aircraft remote sensing data can be used as a replacement for, or a supplement to traditional methods of monitoring coal mine pollution of the upper Potomac Basin. The gathering and analysis of representative samples of the raw and processed data obtained during the survey are described, along with plans to demonstrate and optimize the data collection processes.

  20. Experimental Investigation of Flow Resistance in a Coal Mine Ventilation Air Methane Preheated Catalytic Oxidation Reactor

    OpenAIRE

    Zheng, Bin; Liu, Yongqi; Liu, Ruixiang; Meng, Jian; Mao, Mingming

    2015-01-01

    This paper reports the results of experimental investigation of flow resistance in a coal mine ventilation air methane preheated catalytic oxidation reactor. The experimental system was installed at the Energy Research Institute of Shandong University of Technology. The system has been used to investigate the effects of flow rate (200 Nm3/h to 1000 Nm3/h) and catalytic oxidation bed average temperature (20°C to 560°C) within the preheated catalytic oxidation reactor. The pressure drop and res...

  1. Influence of the Haizhou Open Pit Coal Mine on the atmospheric flow over Fuxin, China.

    Science.gov (United States)

    Chen, He; Yang, Zhi-Feng; Wang, Xuan

    2004-01-01

    The influence of the Haizhou Open Pit Mine on the atmospheric flow in nearby Fuxin City in China was analyzed with the aid of the steady-state Navier-Stokes equations. The finite element method was used to obtain numerical solutions to these equations. The results showed that the Haizhou Open Pit Coal Mine contributes to the turbulent flow in the Fuxin City and its surroundings. However, when compared with the climatic effects, the open pit mine has a relatively small impact on the atmospheric flow over Fuxin.

  2. Research on target tracking in coal mine based on optical flow method

    Science.gov (United States)

    Xue, Hongye; Xiao, Qingwei

    2015-03-01

    To recognize, track and count the bolting machine in coal mine video images, a real-time target tracking method based on the Lucas-Kanade sparse optical flow is proposed in this paper. In the method, we judge whether the moving target deviate from its trajectory, predicate and correct the position of the moving target. The method solves the problem of failure to track the target or lose the target because of the weak light, uneven illumination and blocking. Using the VC++ platform and Opencv lib we complete the recognition and tracking. The validity of the method is verified by the result of the experiment.

  3. Linked-cone DEA profit ratios and technical efficiency with application to Illinois coal mines

    International Nuclear Information System (INIS)

    Thompson, R.G.; Dharmapala, P.S.; Thrall, R.M.

    1995-01-01

    The authors develop a theory stating that Data Envelopment Analysis (DEA) profit ratios and technical efficiency measures require separate treatment. This point is illustrated by analysis of an example problem; showing that DEA technical efficiency does not necessarily imply a DEA maximum profit ratio; and that a DEA maximum profit ratio does not necessarily imply DEA technical efficiency. The mathematical framework underlying this argument is provided. Application of the concepts to Illinois coal mining data lends support to the need for separate treatment of DEA technical efficiency and DEA profit ratios. 31 refs., 4 figs., 9 tabs

  4. Absenteeism and accidents in a dangerous environment: empirical analysis of underground coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Goodman, P.S.; Garber, S.

    1988-02-01

    The study examined the effects or consequences of absenteeism on accidents. Data were gathered from production crews in five underground coal mines. A unique data set was created that traced on a daily basis the absence event, the company's policy on replacement, and the occurrence of an accident. The concept of familiarity was introduced to explain the impact of absenteeism on accidents. The basic data showed that absenteeism increased the chances for accidents in certain categories of unfamiliarity. Implications for manpower policy and absentee research are discussed. 4 tabs., 6 refs.

  5. Long term stability analysis of cast iron shaft linings after Coal Mine closure and flooding

    Energy Technology Data Exchange (ETDEWEB)

    Hadj-Hassen, F. [Ecole des Mines de Paris - CGES, 77 - Fontainebleau (France); Bienvenu, Y. [Ecole des Mines de Paris, CM, 91 - Evry (France); Noirel, J.F. [Charbonnages de France, DTN, 57 - Freyming Merlebach (France); Metz, M. [charbonnages de France, ESA, 57 - Freyming Merlebach (France)

    2005-07-01

    This paper presents the results of a study conducted to analyse the long term stability of the cast iron shaft lining after coal mine closure and flooding. The attention is mainly focused on the behaviour during the critical phase of flooding as well as the phase corresponding to the disappearance of the water pressure and the stabilization of the environment. This pluri-disciplinary study was conducted by a team combining specialists in rock mechanics who identified the main risks and the conditions of stability of the lining and specialists in metallurgy who studied the composition of the cast iron and its corrosion behaviour after exposure to mine water. (authors)

  6. Use of microalgae of Chlorophyta division in the biological treatment of acid drains of coal mines

    Directory of Open Access Journals (Sweden)

    Darkys Devia Torres

    2017-07-01

    Full Text Available The environmental impact caused by coal mining wastewater is significant due to the pollution load, usually represented in high concentrations of suspended solids, metals (mainly iron and other trace elements and low pH values. The aim of this study was to evaluate the efficiency of a biological treatment system using microalgae belonging to the Chlorophyta division, for the removal of contaminants from the wastewater from a mine owned by Coal North Energy S.A.S. At the end of treatment, it was possible to remove up to 66.67% of total iron, 46.67% for chloride and 95.1% for Chemical Oxigen Demand.

  7. Linked-cone DEA profit ratios and technical efficiency with application to Illinois coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Thompson, R.G.; Dharmapala, P.S.; Thrall, R.M. [University of Houston, Houston, TX (United States). Dept. of Decision and Information Sciences

    1995-04-01

    The authors develop a theory stating that Data Envelopment Analysis (DEA) profit ratios and technical efficiency measures require separate treatment. This point is illustrated by analysis of an example problem; showing that DEA technical efficiency does not necessarily imply a DEA maximum profit ratio; and that a DEA maximum profit ratio does not necessarily imply DEA technical efficiency. The mathematical framework underlying this argument is provided. Application of the concepts to Illinois coal mining data lends support to the need for separate treatment of DEA technical efficiency and DEA profit ratios. 31 refs., 4 figs., 9 tabs.

  8. Resource Wars: An On the Ground Understanding of Mountaintop Removal Coal Mining in Appalachia, West Virginia

    Directory of Open Access Journals (Sweden)

    Nicole Fabricant

    2015-06-01

    Full Text Available This article sketches student responses and subsequent political action to directly witnessing the tragedy of Mountaintop Coal Mining (MTR on Kayford Mountain in West Virginia. I have created an "engaged anthropological curriculum" as part of my Resource Wars of 21st Century (an upper level elective course where students spend four days on an active battlefield in order to a expose students first-hand to the stories and testimonials of social, economic, physical degradation caused by MTR.

  9. Experience of creating a multifunctional safety system at the coal mining enterprise

    Science.gov (United States)

    Reshetnikov, V. V.; Davkaev, K. S.; Korolkov, M. V.; Lyakhovets, M. V.

    2018-05-01

    The principles of creating multifunctional safety systems (MFSS) based on mathematical models with Markov properties are considered. The applicability of such models for the analysis of the safety of the created systems and their effectiveness is substantiated. The method of this analysis and the results of its testing are discussed. The variant of IFSB implementation in the conditions of the operating coal-mining enterprise is given. The functional scheme, data scheme and operating modes of the MFSS are given. The automated workplace of the industrial safety controller is described.

  10. A study of trends in occupational risks associated with coal mining

    Energy Technology Data Exchange (ETDEWEB)

    Amoundru, C.

    1980-10-01

    The occupational risks associated with underground coal mining can be categorized as either industrial accidents or occupational diseases. Since 1957, the number of fatal accidents per million tons of coal produced has dropped by a factor of four. The number of industrial accidents in general decreased by 30% during 1967-75. The main occupational diseases affecting miners are arthrosis, deafness, and pneumoconiosis. To make an objective comparison with the health hazards from other sources of energy, the probable risks facing workers in a modern mine should be compared with those currently confronting workers in other industries.

  11. A Look into Miners' Health in Prevailing Ambience of Underground Coal Mine Environment

    Science.gov (United States)

    Dey, N. C.; Pal, S.

    2012-04-01

    Environmental factors such as noise, vibration, illumination, humidity, temperature and air velocity, etc. do play a major role on the health, comfort and efficient performance of underground coal miners at work. Ergonomics can help to promote health, efficiency and well being of miners and to make best use of their capabilities within the ambit of underground coal mine environment. Adequate work stretch and work-rest scheduling have to be determined for every category of miners from work physiology point of view so as to keep better health of the miners in general and to have their maximum efficiency at work in particular.

  12. Gastric cancer in coal miners: an hypothesis of coal mine dust causation

    Energy Technology Data Exchange (ETDEWEB)

    Ong, T M; Whong, W Z; Ames, R G

    1983-10-01

    An hypothesis is proposed to explain the elevated incidence of gastric cancer among coal miners. Inhaled coal mine dust, especially the larger particles, is cleared from the lung and tracheobronchial tree by mucociliary function, swallowed, and introduced into the stomach. Organic and/or inorganic materials in the dust can undergo intra-gastric nitrosation and/or interaction with exogenous chemicals to form carcinogenic compounds which in turn may lead to precancerous lesions, which may subsequently develop into gastric cancer. This sequence of events, however, depends upon occupational exposures as well as life-style features and individual genetic predisposition.

  13. Developments in the German coal mining industry; Entwicklungen im deutschen Steinkohlenbergbau

    Energy Technology Data Exchange (ETDEWEB)

    Eikhoff, J. [Deutsche Steinkohle AG (DSK), Herne (Germany)

    2007-02-01

    The developments in the German coal mining industry are always associated with the questions of national energy supply. The main emphasis is on a balanced energy mix with the aim of security of supply, compatibility with the environment and profitability. The operating aim of an increase in productivity to reduce costs is derived on this basis. The innovative operation required for this purpose results from the combination of technical, process and social innovation. The two last-mentioned are becoming increasingly important for a high rate of innovation at the collieries of DSK. (orig.)

  14. Dust control in Belgian coal mines. Position at the beginning of 1975

    Energy Technology Data Exchange (ETDEWEB)

    Preat, B; Vanstraelen, M

    1975-01-01

    A general view is given of dust control in Belgian coal mines at the beginning of 1975. The statistical data received from the mines are presented in tabular form. The length and the output of coal faces treated by the classical methods of pre-spraying of the wall, wet cutting, water infusion and wet pneumatic picks are given separately; in some cases two or more of these techniques are used together on the same coalface. The number of rock headings in which different methods of dust control are used is also given.

  15. Database on nuclide content of coal and gangue in Chinese coal mines

    International Nuclear Information System (INIS)

    Liu Fudong; Liao Haitao; Wang Chunhong; Chen Ling; Liu Senlin

    2006-01-01

    The designing ides, structure, interface and basic function of a database are introduced of nuclide content of coal or gangue in Chinese coal mine. The design of the database adopts Sybase database system, and the database has the functions of making inquiries of keyword, classification and statistics, printing, data input which are achieved by using Power builder Language program. At the present, in this database, the data are collected on the radioactivity of natural radionuclide of 2043 coal, gangue and the other relative samples from various coal miners of all over the country. The database will provide the basic data for the environmental impact assessment of Chinese coal energy. (authors)

  16. Landscape management in an area affected by surface brown coal mining

    Science.gov (United States)

    Vráblíková, J.; Wildová, E.; Vráblík, P.; Blažková, M.

    2017-10-01

    The contribution summarizes results of a project concentrated on landscape management of an area affected by brown coal mining located in northern Bohemia (The Most basin) focusing on restoration and reclamation processes. It describes in particular the shares of individual types of reclamations in the area of interest. A strategic document that also supports landscape restoration in anthropogenically burdened regions was written within the project called “Restart” and the second part of the contribution is focused on its chapters which address this issue.

  17. Legal Analysis of Coal Mining in Efforts to Maintain The Environmental Sustainability

    Directory of Open Access Journals (Sweden)

    Iwan Irawan

    2016-07-01

    Full Text Available The goal of this article was to suggest the government to make the appropriate laws and policies in order to optimize the utilization of coal based on environmental sustainability. The research applied library research from several research results and the Act no. 4 of 2009. Data were analyzed qualitatively by the way of decomposition, connecting with the rules, and the legal experts’ opinion. It can be concluded that investors are not optimal in managing and conserving the coal mining and the government has not standaridized the environmental management. 

  18. Design of multi-function sensor detection system in coal mine based on ARM

    Science.gov (United States)

    Ge, Yan-Xiang; Zhang, Quan-Zhu; Deng, Yong-Hong

    2017-06-01

    The traditional coal mine sensor in the specific measurement points, the number and type of channel will be greater than or less than the number of monitoring points, resulting in a waste of resources or cannot meet the application requirements, in order to enable the sensor to adapt to the needs of different occasions and reduce the cost, a kind of multi-functional intelligent sensor multiple sensors and ARM11 the S3C6410 processor is used to design and realize the dust, gas, temperature and humidity sensor functions together, and has storage, display, voice, pictures, data query, alarm and other new functions.

  19. Groundwater composition fluctuation within technogenic zones (case study: flooded coal mines in Primorsky Krai, Russia)

    Science.gov (United States)

    Tarasenko, I. A.; Zinkov, A. V.; Vakh, E. A.; Vetoshkina, A. V.; Strelnikova, A. B.

    2016-03-01

    The paper considers groundwater composition fluctuation within technogenic zones based on evidence from the flooded coal mines of Primorye. The authors have determined the regularities of hydrogeochemical processes, specified the groundwater composition fluctuation within the technogenic complexes located in the liquidated mine areas, and identified the equilibrium phases between the studied waters and specific secondary minerals. It has been proved that water within natural-technogenic complexes in the liquidated mine areas are saturated with silicates, carbonates, sulfates, oxides, and hydroxides, which should be taken into account when designing technologies for groundwater treatment.

  20. The Concept of Resource Use Efficiency as a Theoretical Basis for Promising Coal Mining Technologies

    Science.gov (United States)

    Mikhalchenko, Vadim

    2017-11-01

    The article is devoted to solving one of the most relevant problems of the coal mining industry - its high resource use efficiency, which results in high environmental and economic costs of operating enterprises. It is shown that it is the high resource use efficiency of traditional, historically developed coal production systems that generates a conflict between indicators of economic efficiency and indicators of resistance to uncertainty and variability of market environment parameters. The traditional technological paradigm of exploitation of coal deposits also predetermines high, technology-driven, economic risks. The solution is shown and a real example of the problem solution is considered.

  1. Outlook for use of 10 kV voltage in coal mines

    Energy Technology Data Exchange (ETDEWEB)

    Voloshchenko, N.I.; Nabokov, E.P.; Razumnyy, Yu.T.

    1983-01-01

    Based on technical-economic studies of the models of the plans for electricity supply, the economic expediency is shown of comprehensive implementation of measures for transition of high-voltage equipment of the mines to voltage of 10 kV with simultaneous improvement in the permissible power of short circuiting to 150 MV X A. Technical problems were examined which are associated with creation of explosion-safe electrical equipment, corresponding to the new technical requirements for the system of electricity supply of the coal mine.

  2. Statistical analysis of surface-water-quality data in and near the coal-mining region of southwestern Indiana, 1957-80

    Science.gov (United States)

    Martin, Jeffrey D.; Crawford, Charles G.

    1987-01-01

    predictions of the water-quality variables listed above. The poorest relations are typically at stations in the Patoka River watershed. Suspended-solids concentration was positively related to streamflow at all but two stations on the Patoka River. These relations are poor, have large confidence intervals, and will give less reliable predictions of suspended-solids concentration. Predictive equations for the regional relations between dissolved-solids concentration and specific conductance and between sulfate concentration and specific conductance, and the seasonal patterns of water quality, are probably valid for the coal-mining regions of Illinois and western Kentucky.

  3. Behaviour, development and metal accumulation in striped marsh frog tadpoles (Limnodynastes peronii) exposed to coal mine wastewater

    DEFF Research Database (Denmark)

    Lanctôt, C.; Bennett, W.; Wilson, S.

    2016-01-01

    Coal mining generates large quantities of complex effluent, and this often contains high levels of dissolved solids, suspended solids, metals, hydrocarbons, salts and other compounds. Substantial volumes of mine wastewater are periodically discharged into the environment, through both planned...... and accidental releases, and this raises concerns about the potential for adverse impacts on aquatic wildlife. There have been few attempts to explore sub-lethal effects of coal mine wastewater on amphibians compared to other organisms, and this is particularly true for Australian species. To address existing...... knowledge gaps, we exposed striped marsh frog (Limnodynastes peronii) tadpoles to 25, 50 and 100% coal mine wastewater collected from two holding dams (CMW1 and CMW2) located at an open cut mine in Central Queensland, Australia. The exposure lasted for four weeks, after which survival, growth...

  4. Simulation of water recovery and its effect on settlement of open-cut coal mine back-fill

    International Nuclear Information System (INIS)

    Naderian, A.R.; Williams, D.J.

    1996-01-01

    Open-cut coal mine back-fill usually undergoes significant settlement due to inundation by surface water infiltration and groundwater rise. The rate and magnitude of inundation settlement is difficult to predict and quantify due to the large number of contributing factors. Consequently, none of the available settlement models and theories has been able to successfully describe the inundation settlement occurring in back-filled open-cut coal mines. A combination of laboratory and numerical simulation of settlement is a valuable means of estimating the inundation settlement of back-fill. The settlements predicted by this simulation are in good agreement with previous observations of inundation settlement in open-cut coal mine back-fill. 11 refs., 14 figs., 1 tab

  5. The main environmental and social problems in China's large coal mine construction and the countermeasures

    Energy Technology Data Exchange (ETDEWEB)

    Geng, Hai-qing [State Environmental Protection Administration, Beijing (China). Appraisal Center for Environment and Engineering

    2008-05-15

    Due to rapid industrialization and urbanization, the number of China's large proposed coal mines has increased very quickly in recent years. 144 environmental impact assessment reports were submitted to SEPA during 2001 2006, so the problem of reconciling coal exploitation with the environmental and social impacts has become urgent in China's sustainable development strategy. Based on analysis of data on coal mine exploitation, it is pointed out that there are four main problems in the management of the coal sector: the SEA (Strategic Environmental Assessment) lags behind the practical needs; the policy is not clear; migration is neglected; and an ecological compensatory mechanism is absent. Four countermeasures are recommended: accelerating the execution of SEA; compartmentalizing typical zones for environmental management; improving the organisation of resettlement in the coal district; and installing an ecological compensatory mechanism in the coal mining industry. 13 refs., 2 figs., 1 tab.

  6. A study on measures to reduce production cost of long-running collieries and coal mining mechanization

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-12-01

    The reducing coal market has been enforcing the coal industry to make exceptional rationalization and restructuring efforts since the end of the eighties. To the competition from crude oil and natural gas has been added the growing pressure from rising wages and rising production cost as the working get deeper. To improve the competitive position of the remaining 11 coal mines after the rationalization of the industry, studies to improve mining system have been carried out. This report consists of 3 subjects. 1) Designing of the bord and pillar mining method to extract gently inclined seams of the Dogye coal mine. 2) Mechanization of coal cutting by plough. 3) Achievement of the mechanization of coal mining compared to the previous year. (author). 27 refs.

  7. [Changes in the interleukin-6 and interleukin-10 concentrations in the blood plasma of miners working in deep coal mines].

    Science.gov (United States)

    Plotkin, V Ia; Rebrov, B A; Belkina, E B

    2000-03-01

    Blood plasma levels of interleukin-6 (IL-6) and interleukin-10 (IL-10) were measured in 45 miners working in a deep coal mine immediately after work shift using an immunoenzyme technique. The highest IL-6 level was recorded in those miners engaged in hard work under most adverse conditions of underground workings--it was found to exceed the control values. The same group of workers demonstrated the lowest level of IL-10 that differed from the control value. Miners aged between 41 to 50 years working in a coal mine, their underground service duration 16 to 20 years, displayed a decline in the level of IL-6. The coal mine miners with the 11- to 15-year service duration revealed an increase in the level of IL-10.

  8. Determination of combustible volatile matter in coal mine roadway dusts by backscatter of x-rays from a radioisotope source

    International Nuclear Information System (INIS)

    Ailwood, C.R.; Bunch, K.; Fookes, R.A.; Gravitis, V.L.; Watt, J.S.

    1977-01-01

    The combustible volatile matter in coal mine roadway dusts (CVM) has been determined using x-ray backscatter techniques. The correlation between x-ray and chemical techniques is reasonably good for the 92 samples from collieries on the Bulli seam, and the maximum error expected at the maximum level of 11.5 weight per cent CVM permitted in the N.S.W. Coal Mines Regulation Act, 1912, as amended, is about +- 2.5 weight per cent. This x-ray technique can be used only when the combustible volatile content of the coal matter (CVM) varies within a limited range, and a separate calibration is required for each coal seam. Portable equipment based on a radioisotope x-ray source and digital ratemeter makes possible simple and rapid analysis, and with adaptation to use in coal mines should lead to much more comprehensive testing of roadways and hence improved overall prevention of coal dust explosions. (author)

  9. 30 CFR 77.1913 - Fire-resistant wood.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Fire-resistant wood. 77.1913 Section 77.1913 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR COAL MINE SAFETY AND HEALTH... Shaft Sinking § 77.1913 Fire-resistant wood. Except for crossties, timbers, and other wood products...

  10. The use of coal mining wastes for manufacturing paving materials; Los Esteriles del Carbon como Materia Prima para la Fabricacion de Materiales para Pavimentacion

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-01

    This project was aimed at proving the technical feasibility of the use of coal mining wastes in the manufacturing of paving materials: floor-tiles, flags, paving-stones, grit stones, etc. The study proved that coal mining wastes in a mixture with other raw materials can be used in the manufacturing of paving materials: floor-tiles, paving-stones, grit stones.

  11. Basic study for promoting joint implementation and others. Feasibility study on the recovery and utilization of coal mine methane of an Upper Silesian Coal Field

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    Having the Mining Industry Restructuring Public Corporation located in the city of Katowice, Poland as the counterpart, a feasibility study has been executed on a project to utilize coal bed gas for power generation. Selected for the study are the 'Budryk coal mine' owned by KWK 'Budryk' Coal Company and the 'Pniowek coal mine' owned by Jastrzebie Coal Company. Since the Pniowek coal mine can utilize the whole quantity of recovered methane by 2001, the Budryk coal mine was selected as the object of the project. As a result of the trial calculation on the economy when the new gas power plant is installed in the Budryk coal mine, the energy substitution effect was found to equal to a power amount at transmission terminal of 6 MWh/year. Furthermore, when proliferation effect is taken into consideration, an enormous effect can be expected if new coal mines are developed and the existing cola mines will go further deeper, because the Silesian coal mine presently has the coal resource quantity of 57 billion tons and the annual gas discharge quantity of 750 million m{sup 3}. Therefore, if the technologies to recover, manage and utilize the gas are established at the Budryk coal mine, a large effect leading to an aspiration would be expected under the current situation of the structural reorganization under which the Polish coal companies are placed. (NEDO)

  12. Coal mining situation in the Federal Republic of Germany. 1st half of 2016; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. 1. Halbjahr 2016

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2016-09-01

    The report on coal mining in Germany contains statistical data on the following issues: (a) Hard coal mining: part 1: production, resources, performance, employees; part 2: marketing and foreign commerce. (b) brown coal: part 1: production, resources, performance, employees; part II: marketing in domestic and foreign commerce.

  13. Coal mining situation in the Federal Republic of Germany. 1st half of 2017; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. 1. Halbjahr 2017

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2017-09-01

    The report on coal mining in Germany contains statistical data on the following issues: (a) Hard coal mining: part 1: production, resources, performance, employees; part 2: sales and foreign trade. (b) brown coal: part 1: production, refinement, employees; part II: sales in domestic and foreign trade.

  14. Coal mining situation in the Federal Republic of Germany. 1st half of 2015; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. 1. Halbjahr 2015

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2015-08-28

    The report on coal mining in Germany contains statistical data on the following issues: (a) Hard coal mining: part 1: production, resources, performance, employees; part 2: marketing and foreign commerce. (b) brown coal: part 1: production, resources, performance, employees; part II: marketing in domestic and foreign commerce.

  15. Coal mining situation in the Federal Republic of Germany. January to September 2017; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. Januar bis September 2017

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2017-12-04

    This publication presents statistical data on hard coal mining (production, stocks, performance per miner and shift, headcount, sales, foreign sales, imports) as well as brown coal mining (production, refining, headcount, domestic sales, imports) in Germany during the period from January through September 2017.

  16. Basic study for promoting joint implementation and others. Feasibility study on the recovery and utilization of coal mine methane of an Upper Silesian Coal Field

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    Having the Mining Industry Restructuring Public Corporation located in the city of Katowice, Poland as the counterpart, a feasibility study has been executed on a project to utilize coal bed gas for power generation. Selected for the study are the 'Budryk coal mine' owned by KWK 'Budryk' Coal Company and the 'Pniowek coal mine' owned by Jastrzebie Coal Company. Since the Pniowek coal mine can utilize the whole quantity of recovered methane by 2001, the Budryk coal mine was selected as the object of the project. As a result of the trial calculation on the economy when the new gas power plant is installed in the Budryk coal mine, the energy substitution effect was found to equal to a power amount at transmission terminal of 6 MWh/year. Furthermore, when proliferation effect is taken into consideration, an enormous effect can be expected if new coal mines are developed and the existing cola mines will go further deeper, because the Silesian coal mine presently has the coal resource quantity of 57 billion tons and the annual gas discharge quantity of 750 million m{sup 3}. Therefore, if the technologies to recover, manage and utilize the gas are established at the Budryk coal mine, a large effect leading to an aspiration would be expected under the current situation of the structural reorganization under which the Polish coal companies are placed. (NEDO)

  17. Coal mining situation in the Federal Republic of Germany. January to September 2016; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. Januar bis September 2016

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2016-11-16

    This publication presents statistical data on hard coal mining (production, stocks, performance per miner and shift, headcount, sales, foreign sales, imports) as well as brown coal mining (production, refining, headcount, domestic sales, imports) in Germany during the period from January through September 2016.

  18. Coal mining situation in the Federal Republic of Germany. January to September 2015; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. Januar bis September 2015

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2015-11-30

    This publication presents statistical data on hard coal mining (production, stocks, performance per miner and shift, headcount, sales, foreign sales, imports) as well as brown coal mining (production, refining, headcount, domestic sales, imports) in Germany during the period from January through September 2015.

  19. Coal mining situation in the Federal Republic of Germany. January to September 2014; Zur Lage des Kohlenbergbaus in der Bundesrepublik Deutschland. Januar bis September 2014

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2014-12-12

    This publication presents statistical data on hard coal mining (production, stocks, performance per miner and shift, headcount, sales, foreign sales, imports) as well as brown coal mining (production, refining, headcount, domestic sales, imports) in Germany during the period from January through September 2014.

  20. Application of MIKE SHE to study the impact of coal mining on river runoff in Gujiao mining area, Shanxi, China.

    Directory of Open Access Journals (Sweden)

    Jianhua Ping

    Full Text Available Coal mining is one of the core industries that contribute to the economic development of a country but deteriorate the environment. Being the primary source of energy, coal has become essential to meet the energy demand of a country. It is excavated by both opencast and underground mining methods and affects the environment, especially hydrological cycle, by discharging huge amounts of mine water. Natural hydrological processes have been well known to be vulnerable to human activities, especially large scale mining activities, which inevitably generate surface cracks and subsidence. It is therefore valuable to assess the impact of mining on river runoff for the sustainable development of regional economy. In this paper, the impact of coal mining on river runoff is assessed in one of the national key coal mining sites, Gujiao mining area, Shanxi Province, China. The characteristics of water cycle are described, the similarities and differences of runoff formation are analyzed in both coal mining and pre-mining periods. The integrated distributed hydrological model named MIKE SHE is employed to simulate and evaluate the influence of coal mining on river runoff. The study shows that mining one ton of raw coal leads to the reduction of river runoff by 2.87 m3 between 1981 and 2008, of which the surface runoff decreases by 0.24 m3 and the baseflow by 2.63 m3. The reduction degree of river runoff for mining one ton of raw coal shows an increasing trend over years. The current study also reveals that large scale coal mining initiates the formation of surface cracks and subsidence, which intercepts overland flow and enhances precipitation infiltration. Together with mine drainage, the natural hydrological processes and the stream flows have been altered and the river run off has been greatly reduced.

  1. Application of MIKE SHE to study the impact of coal mining on river runoff in Gujiao mining area, Shanxi, China.

    Science.gov (United States)

    Ping, Jianhua; Yan, Shiyan; Gu, Pan; Wu, Zening; Hu, Caihong

    2017-01-01

    Coal mining is one of the core industries that contribute to the economic development of a country but deteriorate the environment. Being the primary source of energy, coal has become essential to meet the energy demand of a country. It is excavated by both opencast and underground mining methods and affects the environment, especially hydrological cycle, by discharging huge amounts of mine water. Natural hydrological processes have been well known to be vulnerable to human activities, especially large scale mining activities, which inevitably generate surface cracks and subsidence. It is therefore valuable to assess the impact of mining on river runoff for the sustainable development of regional economy. In this paper, the impact of coal mining on river runoff is assessed in one of the national key coal mining sites, Gujiao mining area, Shanxi Province, China. The characteristics of water cycle are described, the similarities and differences of runoff formation are analyzed in both coal mining and pre-mining periods. The integrated distributed hydrological model named MIKE SHE is employed to simulate and evaluate the influence of coal mining on river runoff. The study shows that mining one ton of raw coal leads to the reduction of river runoff by 2.87 m3 between 1981 and 2008, of which the surface runoff decreases by 0.24 m3 and the baseflow by 2.63 m3. The reduction degree of river runoff for mining one ton of raw coal shows an increasing trend over years. The current study also reveals that large scale coal mining initiates the formation of surface cracks and subsidence, which intercepts overland flow and enhances precipitation infiltration. Together with mine drainage, the natural hydrological processes and the stream flows have been altered and the river run off has been greatly reduced.

  2. Exposure to noise in coal mining; Metodologia para el Control y Prevencion del Ruido en las Minas

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-01

    This study is centred on the analysis and evaluation of risk noise to which the workers are exposed in coal mines in ASTURIAS. To this end, great many measurements were carried out on the amount in workers belonging to the various mining professional categories. The results of the study show that there are a great many workers exposed to level of noise which notably surpass those limits established by the Royal Decree, 1316/1989 on the protection of worker against risks from exposure to noise at work particularly those involved in picking and in the preparation, which are, in fact, the most typical post in underground coal mining. (Author)

  3. 30 CFR 77.1916 - Welding, cutting, and soldering; fire protection.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Welding, cutting, and soldering; fire... OF UNDERGROUND COAL MINES Slope and Shaft Sinking § 77.1916 Welding, cutting, and soldering; fire protection. (a) One portable fire extinguisher shall be provided where welding, cutting, or soldering with...

  4. Adaptive optimization as a design and management methodology for coal-mining enterprise in uncertain and volatile market environment - the conceptual framework

    Science.gov (United States)

    Mikhalchenko, V. V.; Rubanik, Yu T.

    2016-10-01

    The work is devoted to the problem of cost-effective adaptation of coal mines to the volatile and uncertain market conditions. Conceptually it can be achieved through alignment of the dynamic characteristics of the coal mining system and power spectrum of market demand for coal product. In practical terms, this ensures the viability and competitiveness of coal mines. Transformation of dynamic characteristics is to be done by changing the structure of production system as well as corporate, logistics and management processes. The proposed methods and algorithms of control are aimed at the development of the theoretical foundations of adaptive optimization as basic methodology for coal mine enterprise management in conditions of high variability and uncertainty of economic and natural environment. Implementation of the proposed methodology requires a revision of the basic principles of open coal mining enterprises design.

  5. The economic pre-treatment of coal mine drainage water with caustic and ozone.

    Science.gov (United States)

    Boyden, B H; Nador, L; Addleman, S; Jeston, L

    2017-09-01

    Coal mine drainage waters are low in pH with varying amounts of iron and manganese and are generally brackish. The Austar Coal Mine in NSW, Australia, sought alternatives to their current lime dosing as the pre-treatment before the downstream reverse osmosis plant. Undesirable operating aspects of the current system include manganese and gypsum scaling/fouling, the need for anti-scalants and reduced water recovery. Thirteen processes for acid mine drainage were initially considered. The preferred process of caustic and ozone for Mn(II) oxidation was pilot tested at up to 0.74 kL/hr at the mine site. Under proper conditions and no aeration, about 81 per cent of the Fe could be removed (initially at 156 mg/L) as green rust. Supplemental aeration followed first-order kinetics and allowed 99.9 per cent Fe(II) oxidation and removal but only with a hydraulic residence time of about 47 minutes. The addition of supplemental Cu catalyst improved Fe removal. Ozone applied after caustic was effective in stoichiometrically oxidising recalcitrant Mn(II) and any remaining Fe(II). Control of the ozonation was achieved using the oxidation reduction potential during oxidation of the Mn(II) species. The use of caustic, followed by ozone, proved economically comparable to the current lime pre-treatment.

  6. Assessment of soil pollution through trace element contamination in a coal mine environment of Jharia

    International Nuclear Information System (INIS)

    Singh, Gurdeep; Shrivastava, B.K.

    1997-01-01

    Coal mining environment is associated with liberation of several trace elements. Soils in such regions particularly have been polluted with these trace elements from a wide range of sources. Trace elements such as lead, copper, iron, zinc, chromium, manganese, cobalt, nickel, cadmium, etc. have caused major human health problems in several parts of the world. Concern over such incidents has prompted numerous investigations into the metabolism and toxic effects of these elements. The trace element contamination of soils (e.g. roadside, overburden dump, residential area etc.) in a part of the Jharia coal field running through a large industrial zone was studied. Representative soil samples from several highly polluted spots of the mining areas were collected and analysed. Results of the investigation revealed that the soils are polluted with trace elements to an appreciable level. Pollution index for soil was developed on the basis of observed concentration levels of trace elements of the study area which may help in better understanding of pollution analysis in coal mining areas. (author)

  7. Development of brown coal mining in the Federal Republic of Germany

    Energy Technology Data Exchange (ETDEWEB)

    Tilmann, W

    1985-01-01

    The significance of brown coal mining in the Federal Republic of Germany for the development of opencast technology and the power industry is discussed with emphasis on mining in the Rhineland Area. In 1984, 126.7 mt of brown coal were produced in the Federal Republic of Germany. In the development of high-performance equipment it is essential that the efficiency of the bucket-wheel excavator is increased. Trains and conveyors are mainly used for mine transport in the Federal Republic of Germany. A high moral commitment is linked to land claims, recultivation and environmental issues on the part of brown coal mining. In 1984 the percentage share of brown coal supplied to the public power stations was 83.6%, corresponding to 105.9 mt. The installed capacity of all brown coal power stations amounted to 12,764 MW at the end of 1984, providing around one quarter of overall public power output. Charge coal for coal refining has become more important and the production of brown coal dust and brown coal coke has also increased. The share of brown coal in domestic primary energy production is currently around 24% of 151 mt hard-coal units or around 10% of 376.5 mt hard-coal units in terms of energy consumption. 12 references.

  8. Optimization of Fe2+ Removal from Coal Mine Wastewater using Activated Biochar of Colocasia esculenta.

    Science.gov (United States)

    Banerjee, Soumya; LaminKa-Ot, Augustine; Joshi, S R; Mandal, Tamal; Halder, Gopinath

    2017-09-01

      The present study investigates the sorptive removal of Fe2+ from simulated coal mine waste water using steam activated biochar (SABC) developed from the roots of Colocasia esculenta. The process was optimized by response surface methodology (RSM) under the influence of pH, temperature, adsorbent dosage and contact time at a constant shaking speed of 180 rpm with an initial concentration of 3 mg/L. The uptake performance of the biosorbent was assessed following a 24 full factorial experimental matrix developed by central composite design approach. Adsorbent was characterised by SEM, EDAX, XRD and B.E.T surface area analyzer. Maximum removal of 72.96% of Fe2+ was observed at pH 7.75, temperature 37.5 °C, adsorbent dosage 1.5 g/L for a time period of 180 mins. The study suggested that SABC prepared from roots of Colocasia esculenta could be used as an efficient and cost effective sorbent for removal of Fe2+ from coal mine wastewater.

  9. Decreased sialidase activity in alveolar macrophages of guinea pigs exposed to coal mine dust.

    Science.gov (United States)

    Terzidis-Trabelsi, H; Lefèvre, J P; Bignon, J; Lambré, C R

    1992-01-01

    The origin of immune dysfunctions that are observed in pneumoconiotic miners still remains unknown. There is evidence that the carbohydrate moiety of membrane glycoconjugates is of primary importance in many functions of immunocompetent cells. The glycosylation, and especially the sialylation level of membrane components of various lymphocyte and macrophage subsets, vary depending on the state of cellular differentiation and activation. Sialidases, which may regulate the amount of sialic acids exposed on the cell membrane, can thus be considered as immunoregulatory enzymes. In this report, the sialidase activity has been measured in alveolar macrophages (AM) and in cell-free bronchoalveolar lavage fluid (BALF) from guinea pigs exposed for 4 months to coal mine dust at a concentration of 300 mg/m3. The samples were collected by bronchoalveolar lavage 2 months after cessation of exposure. The sialidase activity in the cell-free fluid and in the purified alveolar macrophages showed a 10-fold decrease (p less than 0.001). Kinetic parameters of the enzyme such as Km and optimum pH did not change. This changed activity was specific for sialidase, as two other lysosomal glycosidases, beta-galactosidase and N-acetylglucosaminidase, showed unchanged activities. These results suggest the possibility that, by inducing a decreased sialidase activity, exposure to coal mine dust may lead to a modified expression of AM membrane-associated sialic acids giving rise to altered immune functions (i. e., phagocytosis, antigen processing, response to cytokines, etc.). PMID:1396442

  10. The impact of liberalisation of the electricity market on the hard coal mining sector in Poland

    Energy Technology Data Exchange (ETDEWEB)

    Kaminski, Jacek [Mineral and Energy Economy Research Institute of Polish Academy of Sciences, Energy and Environmental Policy Division, Wybickiego 7, 31-261 Krakow (Poland)

    2009-03-15

    The liberalisation of the electricity market changed the conditions of operation not only for the power industry, but also for related sectors. One of the particularly sensitive industries in Poland is coal mining, which is the result of coal-based structure of electricity generation. As it is more difficult, in the liberalised market, to burden consumers with all the costs, electricity producers are eager to transfer the risk of operation to the suppliers. That increases uncertainty about the future of the hard coal industry. The aim of this paper was to quantitatively estimate the impact that liberalisation of the electricity markets may have on the coal mining sector in Poland. First of all, the possible areas of that impact were identified. Then the model, which involved detailed relations in the impact areas identified, was developed and employed to evaluate the performance of the mining sector. The comparison of scenarios of a monopolistic electricity sector with a liberalised one enabled an estimation of the scale of the impact on the mining sector to be made. The results showed that liberalisation causes decreased coal consumption and decreased operating profits in coal companies. However, some savings in electricity costs are possible for coal producers. (author)

  11. The impact of liberalisation of the electricity market on the hard coal mining sector in Poland

    Energy Technology Data Exchange (ETDEWEB)

    Jacek Kaminski [Mineral and Energy Economy Research Institute of Polish Academy of Sciences, Krakow (Poland). Energy and Environmental Policy Division

    2009-03-15

    The liberalisation of the electricity market changed the conditions of operation not only for the power industry but also for related sectors. One of the particularly sensitive industries in Poland is coal mining, which is the result of coal-based structure of electricity generation. As it is more difficult, in the liberalised market, to burden consumers with all the costs, electricity producers are eager to transfer the risk of operation to the suppliers. That increases uncertainty about the future of the hard coal industry. The aim of this paper was to quantitatively estimate the impact that liberalisation of the electricity markets may have on the coal mining sector in Poland. First of all, the possible areas of that impact were identified. Then the model, which involved detailed relations in the impact areas identified, was developed and employed to evaluate the performance of the mining sector. The comparison of scenarios of a monopolistic electricity sector with a liberalised one enabled an estimation of the scale of the impact on the mining sector to be made. The results showed that liberalisation causes decreased coal consumption and decreased operating profits in coal companies. However, some savings in electricity costs are possible for coal producers. 42 refs., 20 figs., 9 tabs., 1 app.

  12. Body ion loss as a bioindicator of water quality impaired by coal mining

    International Nuclear Information System (INIS)

    Grippo, R.S.; Dunson, W.A.

    1994-01-01

    Protection of surface waters receiving discharges from coal mines is currently based on performance standards set by the EPA after passage of the Clean Water Act. These standards were technology-driven and reflect the Best Achievable Control Technology (BAT) available at the time of promulgation. Changes proposed as part of the upcoming reauthorization of the US Clean Water Act suggest that such technology-based standards may be reevaluated in light of more recent information on the toxicological effect of mine discharges on aquatic biota. The authors present here a physiological-based method for evaluating the site-specific toxicity of mine-derived discharges into receiving waters. They tested the usefulness of the body ion loss rate bioassay by exposing fathead minnows, brook charr and stoneflies to coal mine-impacted waters (elevated acidity and trace metals) in the field and to artificial mine water (AMW) in the laboratory. Body ion loss rate was significantly correlated with levels of mine pollution in the field. Body ion loss measured in AMW revealed strong interactions between metals and acid. Because the test animals exhibited differing levels of sensitivity to mine discharge, the selection of an appropriate organism for the body ion loss bioassay may vary depending on the (1) physical characteristics, (2) chemical characteristics and (3) pre-existing level of mine impact of the receiving waters

  13. Geodesy in construction of the Belchatow brown coal mine. Geodezja w budowie KWB Belchatow

    Energy Technology Data Exchange (ETDEWEB)

    Poltoranos, J.

    1984-01-01

    Nine papers were delivered at the conference on geodesy in construction of the Belchatow brown coal mine held in October 1984 in Belchatow. Participants representing the Belchatow mine, Technical Institutes in Warsaw and Wroclaw, the Academy of Mining and Metallurgy im. Stanislaw Staszic in Cracow, the Central Mining Institute in Katowice, other research institutes in Poland and the Ministry of Mining and Power Generation attended the conference, sponsored by the Committee of Geodesy of the Polish Academy of Sciences. The following problems were discussed: types of geodetic measuring networks used in coal surface mining, criteria for optimization of geodetic measuring networks, kinematic problems in surveying displacements in coal mines, investigating strata movement in slopes of large and deep coal surface mines using geodetic surveying, mine surveying in the Belchatow mine, recommendations for amendment of regulations for geodetic surveying in coal surface mines in Poland, character of coal deposit in the Belchatow fault valley, its origin and geology, and causes of seismicity induced by mining in Belchatow. Eight papers have been abstracted separately.

  14. Assessment and distribution of antimony in soils around three coal mines, Anhui, China

    Science.gov (United States)

    Qi, C.; Liu, Gaisheng; Kang, Y.; Lam, P.K.S.; Chou, C.

    2011-01-01

    Thirty-three soil samples were collected from the Luling, Liuer, and Zhangji coal mines in the Huaibei and Huainan areas of Anhui Province, China. The samples were analyzed for antimony (Sb) by inductively coupled plasmaoptical emission spectrometry (ICP-OES) method. The average Sb content in the 33 samples was 4 mg kg-1, which is lower than in coals from this region (6.2 mg kg-1). More than 75% of the soils sampled showed a significant degree of Sb pollution (enrichment factors [EFs] 5-20). The soils collected near the gob pile and coal preparation plant were higher in Sb content than those collected from residential areas near the mines. The gob pile and tailings from the preparation plant were high in mineral matter content and high in Sb. They are the sources of Sb pollution in surface soils in the vicinity of coal mines. The spatial dispersion of Sb in surface soil in the mine region shows that Sb pollution could reach out as far as 350 m into the local environment conditions. Crops in rice paddies may adsorb some Sb and reduce the Sb content in soils from paddyfields. Vertical distribution of Sb in two soil profiles indicates that Sb is normally relatively immobile in soils. ?? 2011 Air & Waste Management Association.

  15. Heavy metal pollution of coal mine-affected agricultural soils in the northern part of Bangladesh.

    Science.gov (United States)

    Bhuiyan, Mohammad A H; Parvez, Lutfar; Islam, M A; Dampare, Samuel B; Suzuki, Shigeyuki

    2010-01-15

    Total concentrations of heavy metals in the soils of mine drainage and surrounding agricultural fields in the northern part of Bangladesh were determined to evaluate the level of contamination. The average concentrations of Ti, Mn, Zn, Pb, As, Fe, Rb, Sr, Nb and Zr exceeded the world normal averages and, in some cases, Mn, Zn, As and Pb exceeded the toxic limit of the respective metals. Soil pollution assessment was carried out using enrichment factor (EF), geoaccumulation index (I(geo)) and pollution load index (PLI). The soils show significant enrichment with Ti, Mn, Zn, Pb, As, Fe, Sr and Nb, indicating inputs from mining activities. The I(geo) values have revealed that Mn (1.24+/-0.38), Zn (1.49+/-0.58) and Pb (1.63+/-0.38) are significantly accumulated in the study area. The PLIs derived from contamination factors indicate that the distal part of the coal mine-affected area is the most polluted (PLI of 4.02). Multivariate statistical analyses, principal component and cluster analyses, suggest that Mn, Zn, Pb and Ti are derived from anthropogenic sources, particularly coal mining activities, and the extreme proximal and distal parts are heavily contaminated with maximum heavy metals.

  16. Development and Sliding Wear Response of Epoxy Composites Filled with Coal Mine Overburden Material

    Science.gov (United States)

    Das, Prithika; Satapathy, Alok; Mishra, M. K.

    2018-03-01

    The paper reports on development and characterization of epoxy based composites filled with micro-sized mine overburden material. Coal mine overburden material is typically highly heterogeneous and is considered as waste material. For excavating each ton of coal, roughly 5 tons of overburden materials are removed and is dumped nearby occupying large space. Gainful utilization of this waste is a major challenge. In the present work, this material is used as filler materials in making a new class of epoxy matrix composites. Composites with different weight proportions of fillers (0, 10, 20, 30 and 40) wt. % are prepared by hand layup technique. Compression tests are performed as per corresponding ASTM standards to assess the compressive strength of these composites. Further, dry sliding tests are performed following ASTM G99 standards using a pin on disk machine. A design of experiment approach based on Taguchi’s L16 orthogonal arrays is adopted. Tests are performed at different sliding velocities for multiple sliding distances under varying normal loads. Specific wear rates of the composites under different test conditions are obtained. The analysis of the test results revealed that the filler content and the sliding velocity are the most predominant control factors affecting the wear rate. This work thus, opens up a new avenue for the value added utilization of coal mine overburden material.

  17. A case study of multi-seam coal mine entry stability analysis with strength reduction method.

    Science.gov (United States)

    Tulu, Ihsan Berk; Esterhuizen, Gabriel S; Klemetti, Ted; Murphy, Michael M; Sumner, James; Sloan, Michael

    2016-03-01

    In this paper, the advantage of using numerical models with the strength reduction method (SRM) to evaluate entry stability in complex multiple-seam conditions is demonstrated. A coal mine under variable topography from the Central Appalachian region is used as a case study. At this mine, unexpected roof conditions were encountered during development below previously mined panels. Stress mapping and observation of ground conditions were used to quantify the success of entry support systems in three room-and-pillar panels. Numerical model analyses were initially conducted to estimate the stresses induced by the multiple-seam mining at the locations of the affected entries. The SRM was used to quantify the stability factor of the supported roof of the entries at selected locations. The SRM-calculated stability factors were compared with observations made during the site visits, and the results demonstrate that the SRM adequately identifies the unexpected roof conditions in this complex case. It is concluded that the SRM can be used to effectively evaluate the likely success of roof supports and the stability condition of entries in coal mines.

  18. Intervention strategies to eliminate truck-related fatalities in surface coal mining in West Virginia.

    Science.gov (United States)

    Zhang, Meng; Kecojevic, Vladislav

    2016-01-01

    The main objective of this review was to build upon a previous study on the root causes of truck-related fatalities in surface coal mining operations in West Virginia, and to develop intervention strategies to eliminate these fatalities. This review considers a two-pronged approach to accident prevention: one that is fundamental and traditional (safety regulations, training and education, and engineering of the work environment); and one that is innovative and creative (e.g., applying technological advances to better control and eliminate the root causes of accidents). Suggestions for improving current training and education system are proposed, and recommendations are provided on improving the safety of mine working conditions, specifically safety conditions on haul roads, dump sites, and loading areas. We also discuss various currently available technologies that can help prevent haul truck-related fatal accidents. The results of this review should be used by mine personnel to help create safer working conditions and decrease truck-related fatalities in surface coal mining.

  19. In Situ Test Study of Characteristics of Coal Mining Dynamic Load

    Directory of Open Access Journals (Sweden)

    Jiang He

    2015-01-01

    Full Text Available Combination of coal mining dynamic load and high static stress can easily induce such dynamic disasters as rock burst, coal and gas outburst, roof fall, and water inrush. In order to obtain the characteristic parameters of mining dynamic load and dynamic mechanism of coal and rock, the stress wave theory is applied to derive the relation of mining dynamic load strain rate and stress wave parameters. The in situ test was applied to study the stress wave propagation law of coal mine dynamic load by using the SOS microseismic monitoring system. An evaluation method for mining dynamic load strain rate was proposed, and the statistical evaluation was carried out for the range of strain rate. The research results show that the loading strain rate of mining dynamic load is in direct proportion to the seismic frequency of coal-rock mass and particle peak vibration velocity and is in inverse proportion to wave velocity. The high-frequency component damps faster than the low-frequency component in the shockwave propagating process; and the peak particle vibration velocity has a power functional relationship with the transmitting distance. The loading strain rate of mining dynamic load is generally less than class 10−1/s.

  20. Vegetation index analysis of multi-source remote sensing data in coal mine wasteland

    Energy Technology Data Exchange (ETDEWEB)

    Han, Y.X.; Li, M.Z.; Li, D.L. [China Agricultural University, Beijing (China)

    2007-12-15

    Thirty-six soil samples were collected and their hyperspectral data used to calculate vegetation indices such as a normalised difference vegetation index (NDVI) and a difference vegetation index (DVI). These were evaluated for typical surface object features within the wastelands around Haizhou Opencast Coal Mine in Fuxin city. A principal component analysis to the hyperspectral data was performed, and the result showed that the first and the second principal components satisfactorily accounted for the multi-spectral image information. The panchromatic and multi-spectral images of SPOT5 were then merged. The panchromatic image replaced the first principal component to improve spatial resolution of the image. In addition, the multispectral images and the NDVI image were classified into six types using the unsupervised classification method. The linear quantitative models were built up and the highest correlation coefficients were obtained between the hyperspectral vegetation index and the vegetation index data from the SPOT5 image. The results show that the hyperspectral data and remote sensing images can be used for quantitative estimation of soil nutrients in coal mine wasteland. They can also provide large area surface information for fast and effective decision making regarding revegetation and the monitoring of dynamic change.