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Destruction Characteristics and Control Countermeasure of Shaft Surrounding Rock Mass in Complex Geological Environment

Author

Listed:
  • Xi Wang

    (Deep Mining Laboratory of Shandong Gold Group Co., Ltd., Laizhou 261442, China)

  • Zhen Liu

    (Deep Mining Laboratory of Shandong Gold Group Co., Ltd., Laizhou 261442, China)

  • Yuyun Fan

    (Deep Mining Laboratory of Shandong Gold Group Co., Ltd., Laizhou 261442, China)

  • Xingquan Liu

    (Deep Mining Laboratory of Shandong Gold Group Co., Ltd., Laizhou 261442, China)

  • Mingwei Jiang

    (Deep Mining Laboratory of Shandong Gold Group Co., Ltd., Laizhou 261442, China)

  • Li Cheng

    (Deep Mining Laboratory of Shandong Gold Group Co., Ltd., Laizhou 261442, China)

  • Guilin Li

    (Deep Mining Laboratory of Shandong Gold Group Co., Ltd., Laizhou 261442, China)

Abstract

Increasing construction depth, changeable failure formations, and redistributed stress conditions inevitably make the mechanical response of mining shaft rock mass complicated. The design method and construction technology of deep shaft need to be perfected urgently. We studied the stability and control method of a main shaft from −930 m located in a deep gold mine. It is concluded that the surrounding rock of the shaft faces conditions including non-high-stressed, high-stressed, and possible instabilities. The failure types include structural plane-controlled failure, deep stress induced failure, rock burst, low confining pressure shear failure, spalling, and frequent conversion of multiple failure. The damages of the surrounding rock mass at −930~−1500 m displayed “ear-shaped” damage, with damage ranges of less than 2.5 m. The shaft temporary reinforcement adopted bolt mResh beam support, in which the length of the bolt was 2.5~3 m, and the row spacing was 1.5 m. The steel type and diameter were determined by the on-site bolt pull test. This temporary support countermeasure plays an important role in preventing shaft deformation and is worth promoting in similar mines.

Suggested Citation

  • Xi Wang & Zhen Liu & Yuyun Fan & Xingquan Liu & Mingwei Jiang & Li Cheng & Guilin Li, 2022. "Destruction Characteristics and Control Countermeasure of Shaft Surrounding Rock Mass in Complex Geological Environment," Sustainability, MDPI, vol. 14(20), pages 1-11, October.
  • Handle: RePEc:gam:jsusta:v:14:y:2022:i:20:p:13329-:d:944790
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    References listed on IDEAS

    as
    1. Yang Liu & Congrui Zhang & Yingying Huang & Zhixiong Xiao & Yaxuan Han & Gaofeng Ren, 2021. "Climate Impact of China’s Promotion of the Filling Mining Method: Bottom-Up Estimation of Greenhouse Gas Emissions in Underground Metal Mines," Energies, MDPI, vol. 14(11), pages 1-17, June.
    2. Qihao Sun & Fengshan Ma & Jie Guo & Guang Li & Xuelei Feng, 2020. "Deformation Failure Mechanism of Deep Vertical Shaft in Jinchuan Mining Area," Sustainability, MDPI, vol. 12(6), pages 1-23, March.
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