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Reduction of Stress Acting on a Thick, Deep Coal Seam by Protective-Seam Mining

Author

Listed:
  • Rui Gao

    (Key Laboratory of Deep Coal Resource Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Bin Yu

    (Key Laboratory of Deep Coal Resource Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China
    Datong Coal Mine Group Co. Ltd., Datong 037000, China)

  • Hongchun Xia

    (College of Civil and Architectural Engineering, Dalian University, Dalian 116622, China)

  • Hongfei Duan

    (Datong Coal Mine Group Co. Ltd., Datong 037000, China)

Abstract

Aiming to reduce the high mining stress observed in large-space roof structures during mechanized mining of thick coal seams, a control technique based on protective-seam mining is proposed. This technique was used to investigate the 8108 working face of the No. 3–5 thick coal seam of the Tashan mine located in the Datong area of Shanxi, China, by means of simulations and field measurements. The numerical simulation revealed that the No. 3–5 coal seam undergoes expansion and deformation, accompanied by stress relief due to the mining of the overlying No. 4 coal seam. The physical simulation demonstrated that mining the protective seam changes the structural characteristics of the overlying strata in advance and reduces the integrity of the roof in the No. 3–5 coal seam. Field measurements showed that the support loads in the 8108 working face are significantly weaker than those in the adjacent 8107 working face, where protective-seam mining was not performed. In the absence of high resistance on the support and distinct periodic weighting characteristics, the rock masses around the 8108 working face and roadway could be easily supported.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:8:p:1209-:d:108300
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    References listed on IDEAS

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    1. Dan Ma & Haibo Bai & Yanmeng Wang, 2015. "Mechanical behavior of a coal seam penetrated by a karst collapse pillar: mining-induced groundwater inrush risk," 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 2137-2151, February.
    2. 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.
    3. 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.
    4. Yiyu Lu & Yugang Cheng & Zhaolong Ge & Liang Cheng & Shaojie Zuo & Jianyu Zhong, 2016. "Determination of Fracture Initiation Locations during Cross-Measure Drilling for Hydraulic Fracturing of Coal Seams," Energies, MDPI, vol. 9(5), pages 1-13, May.
    5. Zhaolong Ge & Kai Deng & Yiyu Lu & Liang Cheng & Shaojie Zuo & Xingdi Tian, 2016. "A Novel Method for Borehole Blockage Removal and Experimental Study on a Hydraulic Self-Propelled Nozzle in Underground Coal Mines," Energies, MDPI, vol. 9(9), pages 1-13, August.
    6. 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.
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    Cited by:

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