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Deformation Failure Mechanism of Deep Vertical Shaft in Jinchuan Mining Area

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  • Qihao Sun

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China
    Innovation Academy for Earth Science, Chinese Academy of Science, Beijing 100029, China
    University of Chinese Academy of Science, Beijing 100049, China)

  • Fengshan Ma

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China
    Innovation Academy for Earth Science, Chinese Academy of Science, Beijing 100029, China)

  • Jie Guo

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China
    Innovation Academy for Earth Science, Chinese Academy of Science, Beijing 100029, China)

  • Guang Li

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China
    Innovation Academy for Earth Science, Chinese Academy of Science, Beijing 100029, China
    University of Chinese Academy of Science, Beijing 100049, China)

  • Xuelei Feng

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China
    Innovation Academy for Earth Science, Chinese Academy of Science, Beijing 100029, China
    University of Chinese Academy of Science, Beijing 100049, China)

Abstract

Vertical shafts play an important role in the safe operation of mines. The stability of vertical shafts has always been a difficult problem in mining engineering, especially with the increasing of mining depth. In order to keep the engineering works stable, it is necessary to make the deformation failure mechanism of vertical shafts clear. This paper describes a case study of the deformation and failure mechanisms of the vertical shaft in Jinchuan No. 2 mining area in Gansu Province, China. Long-term deformation trends and characteristics of the vertical shaft are analyzed through ground movement and GPS monitoring of ground fissures. Then, based on previous research experience and a detailed field investigation, the modes, influencing factors, and mechanisms of deformation failure in the vertical shaft are studied. To further investigate the mechanism of shaft deformation failure and damage process under mining, the Universal Discrete Element Code (UDEC) software with Trigon approach is employed to build the numerical model of the vertical shaft. Through displacement, stress, and damage analysis, the time, location, and cause of vertical shaft failure during mining are explicitly illustrated. The results suggest that the upper and lower parts of the fault are activated in different ways. The damage to the vertical shaft is still developing at a very high rate under mining with filling method. All our results throw light on the nature of deformation and failure of vertical shafts, and several suggestions for the engineering of deep vertical shafts are finally put forward, providing a reference for other engineering.

Suggested Citation

  • 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.
  • Handle: RePEc:gam:jsusta:v:12:y:2020:i:6:p:2226-:d:331854
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    References listed on IDEAS

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    1. Fengshan Ma & Haijun Zhao & Renmao Yuan & Jie Guo, 2015. "Ground movement resulting from underground backfill mining in a nickel mine (Gansu Province, China)," 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. 77(3), pages 1475-1490, July.
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    Cited by:

    1. Haoxuan Yu & Shuai Li & Lifeng Yu & Xinmin Wang, 2022. "The Recent Progress China Has Made in Green Mine Construction, Part II: Typical Examples of Green Mines," IJERPH, MDPI, vol. 19(13), pages 1-14, July.
    2. Slawomir Porzucek & Monika Loj, 2021. "Microgravity Survey to Detect Voids and Loosening Zones in the Vicinity of the Mine Shaft," Energies, MDPI, vol. 14(11), pages 1-22, May.
    3. Jia Liu & Fengshan Ma & Jie Guo & Guang Li & Yewei Song & Yang Wan, 2022. "A Field Study on the Law of Spatiotemporal Development of Rock Movement of Under-Sea Mining, Shandong, China," Sustainability, MDPI, vol. 14(10), pages 1-13, May.
    4. 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.

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