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Gas outburst disasters and the mining technology of key protective seam in coal seam group in the Huainan coalfield

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  • Haifeng Wang
  • Yuanping Cheng
  • Liang Yuan

Abstract

Coal and gas outburst disasters in coal seams are becoming more serious as coal mines extend deeper underground in China. To aid gas control in high-gas outburst coal seam group, this study performed research based on the geological conditions of the Xinzhuangzi coal mine in the Huainan coalfield. The laws of gas occurrence, the strength of the coal outburst, and the regional partition were studied. Simultaneously, we introduced the key protective seam mining technology and confirmed the mining sequence of coal seam groups. The results indicate that (1) each seam absorbs gas well, and the currently measured gas content is up to 15.0 m 3 /t. (2) Although some differences about coal seams outburst intensity remain, the differences in the same group are very small. (3) The coal seam B10 was chosen as the key protective seam and was mined first; then adjacent seams were mined from bottom to top by layer within the roof of B10 and from top-to-bottom within the floor of B10 to guarantee each adjacent coal seam received the good effects of pressure-relief and increasing permeability. (4) The main methods of gas extraction in each protected seam are surface boreholes and net-like penetrating boreholes in the floor roadway, and related technical parameters were determined according to the degree of pressure-relief in coal seam. This in situ experiment indicates a method aiding the gas control problem and guaranteeing safe and highly efficient exploitation of high-gas outburst seams. Copyright Springer Science+Business Media Dordrecht 2013

Suggested Citation

  • Haifeng Wang & Yuanping Cheng & Liang Yuan, 2013. "Gas outburst disasters and the mining technology of key protective seam in coal seam group in the Huainan coalfield," 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. 67(2), pages 763-782, June.
    • Handle: RePEc:spr:nathaz:v:67:y:2013:i:2:p:763-782
    DOI: 10.1007/s11069-013-0602-5
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    Citations

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    Cited by:

    1. Sheng-Jie Fang & Bing Liang & Wei-Ji Sun & Zhan-Shan Shi & Jian-Feng Hao & Bei-Fang Wang & Xiao-Yong Zhang, 2022. "Study on Stress Evolution Law of Overburden under Repeated Mining in Long-Distance Double Upper Protective Layer," Energies, MDPI, vol. 15(12), pages 1-24, June.
    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. Feng Zhang & Jinshan Zhang, 2022. "Research on Joint Protection Layers and Gas Prevention Technology in Outburst Coal Seams," Sustainability, MDPI, vol. 14(14), pages 1-15, July.
    4. Guo, Yong & Yang, Fuqiang, 2023. "Mining safety research in China: Understanding safety research trends and future demands for sustainable mining industry," Resources Policy, Elsevier, vol. 83(C).
    5. Jun Lu & Yun Wang & Jingyi Chen, 2018. "Detection of Tectonically Deformed Coal Using Model-Based Joint Inversion of Multi-Component Seismic Data," Energies, MDPI, vol. 11(4), pages 1-17, April.
    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. Zi-shan Gao & Chuan-jie Zhu & Xi-miao Lu & Jie Ren, 2020. "Prevention and control of abnormal gas emission caused by accidental discharge of floor fissure water: 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. 100(2), pages 713-733, January.
    8. Zuxun Zhang & Hongtu Wang & Bozhi Deng & Minghui Li & Dongming Zhang, 2018. "Field Investigation of Hydraulic Fracturing in Coal Seams and Its Enhancement for Methane Extraction in the Southeast Sichuan Basin, China," Energies, MDPI, vol. 11(12), pages 1-15, December.
    9. 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.
    10. Xinshan Peng & Lingling Qi & Zhaofeng Wang & Xiaoqing Zhou & Chunlei Hua, 2022. "Study on Overburden Movement Deformation and Roof Breakage Law of Under-Protective Steeply Inclined Coal Seam Mining," Sustainability, MDPI, vol. 14(16), pages 1-13, August.
    11. Yanjiang Chai & Linming Dou & Jiang He & Xiaotao Ma & Fangzhou Lu & Hu He, 2024. "Limitations of Upper Protective Layers as Pressure Relief Measures for Extra-Thick Coal Seam Mining: Insights from a Case Study," Energies, MDPI, vol. 17(6), pages 1-21, March.
    12. 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.
    13. Lifeng Wu & Sifeng Liu & Ding Chen & Ligen Yao & Wei Cui, 2014. "Using gray model with fractional order accumulation to predict gas emission," 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(3), pages 2231-2236, April.

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