Accidents in coal mines

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Accidents in coal mines

  1. 1. ACCIDENTS IN COAL MINES Coal is an important fossil fuel for generation of electricity and for other industrial purposes Mohammed Imran A. 9865938211 [email_address]
  2. 2. POLLUTION EFFECTS <ul><li>Air pollution - emission of particulate matter and gases including methane (CH4), sulfur dioxide (SO2) and oxides of nitrogen (NOx) </li></ul><ul><li>Water pollution - mine sump water and storm water drainage </li></ul><ul><li>Land degradation – Surface land mines (forests) </li></ul><ul><li>Noise pollution - machines, drilling and coal handling </li></ul><ul><li>Solid waste – overburden </li></ul><ul><li>Deforestation - </li></ul>Mohammed Imran A.
  3. 3. <ul><li>There are 2 broad categories of mines in India: Open Cast and Underground. </li></ul><ul><li>The accident records classify the location of accident as </li></ul><ul><li>1.underground, </li></ul><ul><li>2.open cast and </li></ul><ul><li>3.surface . </li></ul><ul><li>While the first 2 categories represent accidents </li></ul><ul><li>occurring inside the 2 types of mines, </li></ul><ul><li>respectively, the third category represents </li></ul><ul><li>mining-related accidents occurring above the </li></ul><ul><li>surface in the vicinity of either type of mine. </li></ul>Mohammed Imran A.
  4. 4. Important causes of accidents <ul><li>Roof/side fall - accidental fall of roof or side at the </li></ul><ul><li>time of excavation - PRIMARY </li></ul><ul><li>Winding - accident in the course of raising or lowering </li></ul><ul><li>coal or man in shaft </li></ul><ul><li>Haulage - accident in the course of raising or lowering </li></ul><ul><li>coal by tubs - NEXT </li></ul><ul><li>Dumper - accidents associated with dumper – wheeled </li></ul><ul><li>vehicles for carrying coal with tipper </li></ul><ul><li>mechanism </li></ul><ul><li>Conveyer - accident in the use of belt or chainconveyers </li></ul><ul><li>Other transport machinery - accident associated with </li></ul><ul><li>trucks and wagons </li></ul><ul><li>Other machinery accident - associated with non-transport machinery like loading machinery, crusher etc. </li></ul>Mohammed Imran A.
  5. 5. Cont… <ul><li>Explosives - accident in the course of using explosives </li></ul><ul><li>Electricity - accidents resulting out of the use of </li></ul><ul><li>electricity </li></ul><ul><li>Dust/gas - accidents due to explosions of noxious </li></ul><ul><li>gases, due to absence of oxygen, due to </li></ul><ul><li>explosion of coal dust etc. </li></ul><ul><li>Fall of object/person - accidents occurring due to </li></ul><ul><li>sudden fall of an object or a </li></ul><ul><li>person </li></ul><ul><li>Inundation - accidents due to sudden rushing in of water </li></ul><ul><li>Miscellaneous - other causes of accidents </li></ul>Mohammed Imran A.
  6. 6. Recommendations for Mine Disaster Prevention and Control Research <ul><li>Mine disaster prevention research within the Mining Program has been of the highest relevance and has had the highest positive impacts on the worker. </li></ul><ul><li>The Mine Disaster Prevention and Control Research needs to place more focus on areas such as communications, miner self-rescue, and emergency response. </li></ul><ul><li>A systems approach to mine management and rescue is needed that will continuously provide marker data and response via intelligent system analysis. </li></ul><ul><li>The Mining Program needs to continue its efforts in disaster prevention and further strengthen its efforts in the area of disaster response. </li></ul><ul><li>The Mining Program should be more involved in monitoring the work of, and partnering with, international bodies to determine the domestic applications of work done abroad. </li></ul>Mohammed Imran A.
  7. 7. Safety monitoring in Coal India Limited <ul><li>Workmen’s inspectors: Safety status of each and </li></ul><ul><li>every mine is monitored by representatives of the workmen, </li></ul><ul><li>one each from Mining, Electrical and Mechanical disciplines </li></ul><ul><li>through inspections, the reports of which and status of </li></ul><ul><li>compliance of recommendations are forwarded to the local </li></ul><ul><li>DGMS office. </li></ul><ul><li>Safety committee at mine level: The Safety </li></ul><ul><li>Committee at mine level also monitors the safety status at </li></ul><ul><li>each mine every month through inspection followed by a </li></ul><ul><li>meeting for review of safety status of the mine. This </li></ul><ul><li>committee consists of representatives of workmen and </li></ul><ul><li>Management </li></ul>Mohammed Imran A.
  8. 8. Cont… <ul><li>Area level bipartite/tripartite safety committees : </li></ul><ul><li>The Area Level Committee comprising representatives of </li></ul><ul><li>workmen and management monitors the safety performance </li></ul><ul><li>of the Area biannually. Often representative of DGMS also </li></ul><ul><li>Participates </li></ul><ul><li>Subsidiary level tripartite safety committee: </li></ul><ul><li>Tripartite safety committee functions at subsidiary company </li></ul><ul><li>level and consists of representatives of workmen, DGMS and </li></ul><ul><li>management for review and monitoring of safety measures. </li></ul><ul><li>This body meets bi-annually. </li></ul>Mohammed Imran A.
  9. 9. Cont… <ul><li>Coal India Safety Board: This is headed by the </li></ul><ul><li>Chairman, CIL with workers representatives, Director (T), </li></ul><ul><li>CIL, Director (P), CIL, CMDs of subsidiary companies, the </li></ul><ul><li>DGMS, a representative of the Ministry of Coal as members </li></ul><ul><li>and Executive Director (Safety & Rescue) CIL as Member </li></ul><ul><li>Secretary. The Board reviews the safety status of CIL bi- </li></ul><ul><li>annually, formulates policies and gives guidelines for </li></ul><ul><li>improving safety standards. </li></ul><ul><li>Standing Committee on Safety in Coal Mines: The </li></ul><ul><li>safety situation of the coal mines is also reviewed by the </li></ul><ul><li>Standing Committee on safety in Coal Mines Chaired by the </li></ul><ul><li>Minister for Coal. </li></ul>Mohammed Imran A.
  10. 10. Technologies - reduce the number of accidents <ul><li>Design of system of support of roof in the development </li></ul><ul><li>workings in underground mines by scientific support </li></ul><ul><li>systems based on Rock Mass Rating (RMR) studies. </li></ul><ul><li>Increased use of Roof Bolting / Roof Stitching methods </li></ul><ul><li>of support using steel roof bolts/ steel wire ropes with </li></ul><ul><li>quick setting cement grout to arrest bed separation at </li></ul><ul><li>early stages to impede deterioration of roof. </li></ul><ul><li>Introduction of modern drills like mechanised drilling </li></ul><ul><li>machine to avoid exposure of support personnel to </li></ul><ul><li>unsupported roof while drilling for roof bolting and greater </li></ul><ul><li>use of quick-setting cement/resin capsules grouted roof </li></ul><ul><li>bolts for support in development workings in underground </li></ul><ul><li>mines. </li></ul>Mohammed Imran A.
  11. 11. Cont… <ul><li>Reduced exposure of workers to mining hazards by </li></ul><ul><li>mechanization of loading operations by increasing use of </li></ul><ul><li>SDLs and LHDs in belowground mines, Powered Support </li></ul><ul><li>longwall (PSLW) system of mining, Continuous Miner </li></ul><ul><li>Technology etc., are being progressively adopted in suitable </li></ul><ul><li>areas. </li></ul><ul><li>Regular monitoring of mine environment by handheld </li></ul><ul><li>gas detectors/alarms and flame safety lamps for detecting </li></ul><ul><li>inflammable and noxious gases. Besides, for early detection </li></ul><ul><li>of situations that could lead to an outbreak of fire or an </li></ul><ul><li>explosion, highly capital intensive computerized continuous </li></ul><ul><li>mine environmental tele-monitoring system (ETMS) have </li></ul><ul><li>been installed and are in operation in thirteen identified </li></ul><ul><li>underground mines. </li></ul><ul><li>Introduction of surface miner, an eco-friendly technology </li></ul><ul><li>to reduce hazardous operation like drilling, blasting and </li></ul><ul><li>crushing wherever applicable. </li></ul>Mohammed Imran A.

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