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Gas outburst affected by original rock stress direction

Author

Listed:
  • Wei Yang
  • Bai-quan Lin
  • Jiang-tao Xu

Abstract

In this paper, it was determined that all of the three-dimensional principal stresses increase with depth and that both the maximum and the minimum stresses tend to be aligned in the horizontal orientation. The numerical simulation model was built using the software FLAC 3D to simulate two times, as in two different states of original rock stress, respectively; this simulation was used to investigate how the original rock stress affects the gas outburst risk. The results suggest that an outburst is most likely to happen when the maximum original rock stress is perpendicular to the roadway, rather than parallel to the roadway. The results were demonstrated to be correct by a field experiment. The results suggest that most of the roadways in gas outburst risk coal mines should be designed to lie parallel to the maximum stress direction to avoid the high stress concentration in front of the heading face, thereby reducing the gas outburst risk. Copyright Springer Science+Business Media Dordrecht 2014

Suggested Citation

  • Wei Yang & Bai-quan Lin & Jiang-tao Xu, 2014. "Gas outburst affected by original rock stress direction," 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. 72(2), pages 1063-1074, June.
    • Handle: RePEc:spr:nathaz:v:72:y:2014:i:2:p:1063-1074
    DOI: 10.1007/s11069-014-1049-z
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    Citations

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    Cited by:

    1. Cheng Zhai & Xianwei Xiang & Jizhao Xu & Shiliang Wu, 2016. "The characteristics and main influencing factors affecting coal and gas outbursts in Chinese Pingdingshan mining region," 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. 82(1), pages 507-530, May.
    2. 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.
    3. 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.
    4. Hanpeng Wang & Bing Zhang & Liang Yuan & Guofeng Yu & Wei Wang, 2018. "Gas Release Characteristics in Coal under Different Stresses and Their Impact on Outbursts," Energies, MDPI, vol. 11(10), pages 1-15, October.

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