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Gas ejection accident analysis in bed splitting under igneous sills and the associated control technologies: a case study in the Yangliu Mine, Huaibei Coalfield, China

Author

Listed:
  • Chao Xu
  • Yuanping Cheng
  • Ting Ren
  • Liang Wang
  • Shengli Kong
  • Shouqing Lu

Abstract

In the Yangliu Mine in Huaibei Coalfield, violent magma intrusion produced two layers of the igneous cover sills and the annular dike and caused the ejection of gas and water in the bed splitting from the surface well that destroyed the gas extraction system on the surface. The source, flow characteristics and hazard of the gas in bed splitting under igneous sills were researched via laboratory experiments, theoretical analyses and numerical simulations. The experimental results indicate that the shorter the distance from the igneous sill and the larger the thickness of the igneous sill, the greater will be the amount of the thermal evolution, the pyrolysis stoma, the coal adsorption and desorption ability and the risk of outburst, six coal samples collected at different distances from the igneous sill. The first breaking length of the igneous sill, the volume of the bed splitting, the gas pressure and flow rate in the bed splitting and the accumulative volume of the gas ejected from the surface well #2 were theoretically calculated. The laws of the bed splitting development under the igneous sills were simulated, consistent with the theoretical calculation results. The regional control and prevention technologies for coal seam gas under igneous sills were proposed and applied. Then the safety of the first-mining seam production and the gas extraction in the adjacent seam and bed splitting via the surface well was ensured, and no accidental gas and water ejection occurred. Copyright Springer Science+Business Media Dordrecht 2014

Suggested Citation

  • Chao Xu & Yuanping Cheng & Ting Ren & Liang Wang & Shengli Kong & Shouqing Lu, 2014. "Gas ejection accident analysis in bed splitting under igneous sills and the associated control technologies: a case study in the Yangliu Mine, Huaibei Coalfield, 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. 71(1), pages 109-134, March.
    • Handle: RePEc:spr:nathaz:v:71:y:2014:i:1:p:109-134
    DOI: 10.1007/s11069-013-0903-8
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    Citations

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    Cited by:

    1. Quansen Wu & Fengjun Han & Shengjian Liang & Fanxing Sun & Daqing Wan & Huairui Su & Fuwu Ma & Quanlin Wu, 2022. "Development Law of Mining Fracture and Disaster Control Technology under Hard and Thick Magmatic Rock," Sustainability, MDPI, vol. 14(18), pages 1-23, September.
    2. Xu, Chao & Ma, Sibo & Wang, Kai & Yang, Gang & Zhou, Xin & Zhou, Aitao & Shu, Longyong, 2023. "Stress and permeability evolution of high-gassy coal seams for repeated mining," Energy, Elsevier, vol. 284(C).
    3. Chao Xu & Mingyue Cao & Kai Wang & Qiang Fu & Liangliang Qin, 2021. "Mining‐disturbed coal damage and permeability evolution: Model and validation," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 11(2), pages 210-221, April.
    4. 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.
    5. Lin Li & Shufan Zhang & Zhiqiang Li & Xiangjun Chen & Lin Wang & Shuailong Feng, 2022. "An Experimental and Numerical Study of Abrupt Changes in Coal Permeability with Gas Flowing through Fracture-Pore Structure," Energies, MDPI, vol. 15(21), pages 1-18, October.

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