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Mining thin sub-layer as self-protective coal seam to reduce the danger of coal and gas outburst

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  • Dingqi Li

Abstract

In response to the severe situation of coal mine gas disaster in China, a new method of reducing the danger of coal and gas outbursts and improving gas drainage and utilization in coal mines was introduced in this paper. The main idea of this method is to mining thin sub-layer as self-protective coal seam to eliminate or reduce the danger of coal and gas outburst. This method can be implemented by drills along seam and hydraulic jet when the mined seam with a relatively weak risk of coal and gas outbursts is soft or has a soft layer. This method was first applied in the Yian mine to verify its effectiveness. The results of application showed that mining thin sub-layer as self-protective coal seam can effectively eliminate the danger of coal and gas outburst and improve gas drainage and utilization. As this method needs less time and lower cost than conventional protective layer mining, it is of great significance for mining coal seam with the danger of coal and gas outburst. Copyright Springer Science+Business Media Dordrecht 2014

Suggested Citation

  • Dingqi Li, 2014. "Mining thin sub-layer as self-protective coal seam to reduce the danger of coal and gas outburst," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 71(1), pages 41-52, March.
    • Handle: RePEc:spr:nathaz:v:71:y:2014:i:1:p:41-52
    DOI: 10.1007/s11069-013-0898-1
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    Citations

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    Cited by:

    1. Quangui Li & Baiquan Lin & Cheng Zhai, 2015. "A new technique for preventing and controlling coal and gas outburst hazard with pulse hydraulic fracturing: a case study in Yuwu coal mine, China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 75(3), pages 2931-2946, February.
    2. Jilin Wang & Ming Li & Shaochun Xu & Zhenghui Qu & Bo Jiang, 2018. "Simulation of Ground Stress Field and Advanced Prediction of Gas Outburst Risks in the Non-Mining Area of Xinjing Mine, China," Energies, MDPI, vol. 11(5), pages 1-16, May.
    3. Yi Xue & Feng Gao & Xingguang Liu, 2015. "Effect of damage evolution of coal on permeability variation and analysis of gas outburst hazard with coal mining," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 79(2), pages 999-1013, November.
    4. Qiang Sun & Jixiong Zhang & Qiang Zhang & Wei Yin & Deon Germain, 2016. "A protective seam with nearly whole rock mining technology for controlling coal and gas outburst hazards: a case study," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 84(3), pages 1793-1806, December.
    5. Dong Guowei & Zou Yinhui, 2017. "A Novel Method for Selecting Protective Seam against Coal and Gas Outburst: A Case Study of Wangjiazhai Coal Mine in China," Sustainability, MDPI, vol. 9(6), pages 1-15, June.
    6. Fangtian Wang & Cun Zhang & Ningning Liang, 2017. "Gas Permeability Evolution Mechanism and Comprehensive Gas Drainage Technology for Thin Coal Seam Mining," Energies, MDPI, vol. 10(9), pages 1-18, September.
    7. Zhanshan Shi & Donglin Ye & Bing Qin & Jianfeng Hao & Weiji Sun & Shengjie Fang, 2022. "Mining Height Effect and Application of Upper Protected Layer Mining Pressure Relief," Sustainability, MDPI, vol. 14(16), pages 1-18, August.
    8. Rui Gao & Bin Yu & Hongchun Xia & Hongfei Duan, 2017. "Reduction of Stress Acting on a Thick, Deep Coal Seam by Protective-Seam Mining," Energies, MDPI, vol. 10(8), pages 1-15, August.

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