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Determination of Fractured Water-Conducting Zone Height Based on Microseismic Monitoring: A Case Study in Weiqiang Coalmine, Shaanxi, China

Author

Listed:
  • Wei Gao

    (Faculty of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
    Shaanxi Yanchang Petroleum Sale Electric Co., Ltd., Xi’an 710065, China)

  • Yingchun Li

    (State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China)

  • Qingyuan He

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

The NO. 3 coal seam of the Weiqiang coalmine is faced with a water inrush threat caused by two large reservoirs and the upper confined aquifer. However, existing empirical formulas cannot accurately predict the height of the fractured water-conducting zone; thus, it is necessary to investigate the extent of the fractured water-conducting zone according to the geological conditions of the No. 3 coal seam. The microseismic monitoring system (MMS) was used to monitor the surrounding area of the 1311 working face in real time to obtain the microseismic event information during the fracture development. The detailed situation of the fractured water-conducting zone in three-dimensional space was determined by computer analysis. The results show that the height of the fractured water-conducting zone is 110 m, which is consistent with the range (105.4~120.4 m) measured by various field drilling results and the mechanical mechanism analysis based on the key strata theory (112 m). The achievement of microseismic monitoring provides a guarantee for safety production and prevention and control of mine water disaster in the 1311 working face of the No. 3 coal seam, and can also be applied and promoted in coalmines with similar geological conditions, with significant social and economic benefits.

Suggested Citation

  • Wei Gao & Yingchun Li & Qingyuan He, 2022. "Determination of Fractured Water-Conducting Zone Height Based on Microseismic Monitoring: A Case Study in Weiqiang Coalmine, Shaanxi, China," Sustainability, MDPI, vol. 14(14), pages 1-15, July.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:14:p:8385-:d:858635
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    References listed on IDEAS

    as
    1. Peng Li & Xufeng Wang & Wenhao Cao & Dongsheng Zhang & Dongdong Qin & Hongzhi Wang, 2018. "Influence of Spatial Relationships between Key Strata on the Height of Mining-Induced Fracture Zone: A Case Study of Thick Coal Seam Mining," Energies, MDPI, vol. 11(1), pages 1-11, January.
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    Cited by:

    1. Guohua Zhang & Wenyan Xing & Yanwei Duan & Tao Qin & Xiangang Hou, 2023. "Prediction and Application of the Height of Water-Conducting Fracture Zone in the Composite Roof: A Case Study of Jinxinda Coal Mine," Sustainability, MDPI, vol. 15(11), pages 1-16, June.

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