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Study on the Distribution Trend of Rockburst and Ground Stress in the Hegang Mining Area

Author

Listed:
  • Jiewen Pang

    (School of Engineering for Safety and Emergency Management, Taiyuan University of Science and Technology, Taiyuan 030024, China
    Intelligent Monitoring and Control of Coal Mine Dust Key Laboratory of Shanxi Province, Taiyuan University of Science and Technology, Taiyuan 030024, China)

  • Jianlin Xie

    (School of Engineering for Safety and Emergency Management, Taiyuan University of Science and Technology, Taiyuan 030024, China)

  • Yongliang He

    (School of Engineering for Safety and Emergency Management, Taiyuan University of Science and Technology, Taiyuan 030024, China
    Intelligent Monitoring and Control of Coal Mine Dust Key Laboratory of Shanxi Province, Taiyuan University of Science and Technology, Taiyuan 030024, China)

  • Qiaoyun Han

    (School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Yongjiang Hao

    (School of Engineering for Safety and Emergency Management, Taiyuan University of Science and Technology, Taiyuan 030024, China
    Intelligent Monitoring and Control of Coal Mine Dust Key Laboratory of Shanxi Province, Taiyuan University of Science and Technology, Taiyuan 030024, China)

Abstract

As the depth of coal mining increases, rockbursts become more severe, and multiple rockburst accidents have previously occurred, seriously affecting coal mine production safety. With the Hegang mining area as the research object and using field measurement and numerical simulation as the research methods, the geological and tectonic characteristics of each impact mine in the Hegang mining area are analyzed to obtain the tectonic stress field distribution characteristics of each mine and the tectonic stress field distribution trend in the Hegang mining area. The maximum horizontal principal stress and the minimum horizontal principal stress on the energy field in the overrun area of the retrieval working face is analyzed via numerical simulation, and the influence trend of the ground stress on the impact ground pressure is finally obtained. Results show that using the typical working face where rockburst occurs as the geological proto-type, the influence of the direction of the ground stress field, the maximum horizontal principal stress and the minimum horizontal principal stress on the energy field in the overrun area of the retrieval working face is analyzed via numerical simulation, and the influence trend of the ground stress on the impact ground pressure is finally obtained. When the angle is 70°~90°, an energy peak in the overrun area of the working face reaches its maximum. The ratio of the minimum horizontal stress to the vertical stress is positively correlated with the energy concentration in the overrun area of the working face, but its change has a minimal effect on the energy distribution in the overrun area of the working face. When this ratio is increased from 0.6 to 1.4, the peak energy of the simulated working face only increases by 8.22%, and the energy concentration area remains basically unchanged.

Suggested Citation

  • Jiewen Pang & Jianlin Xie & Yongliang He & Qiaoyun Han & Yongjiang Hao, 2023. "Study on the Distribution Trend of Rockburst and Ground Stress in the Hegang Mining Area," Sustainability, MDPI, vol. 15(12), pages 1-20, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:12:p:9445-:d:1169305
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    References listed on IDEAS

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    1. Qingying Cheng & Bingxiang Huang & Luying Shao & Xinglong Zhao & Shuliang Chen & Haoze Li & Changwei Wang, 2020. "Combination of Pre-Pulse and Constant Pumping Rate Hydraulic Fracturing for Weakening Hard Coal and Rock Mass," Energies, MDPI, vol. 13(21), pages 1-22, October.
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