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Cause investigation of ground sliding during tunneling in sloping and stratified stratum

Author

Listed:
  • Yongxing Zhang

    (Nanjing Forestry University
    Hohai University
    Central South University)

  • Maoqi Yuan

    (Nanjing Forestry University)

  • Weihua Lu

    (Nanjing Forestry University)

  • Jian Zhang

    (Hohai University)

Abstract

This paper presents a case study of investigating the cause of ground sliding during tunneling in the mountain with sloping and stratified stratum, which is implemented by field investigation and numerical analysis. Especially, the strength reduction finite element method is adopted to numerically investigate the influence of surrounding rocks stability from heavy rainfall permeating into ground. Both the field and numerical investigations demonstrate that the ground sliding during tunneling in the sloping and stratified stratum is induced by heavy rainfall permeating into the mountain ground with sloping and stratified stratum, in which heavy rainfall is observed before ground sliding and the instability of mountain slope is reduced with the gradually decreased rainfall. Moreover, the numerical analysis demonstrates that the plastic zones of surrounding rocks in the case of tunneling work implemented later than heavy rainfall are less developed than those in the case of tunneling work implemented earlier than heavy rainfall, which also implies the heavy rainfall permeating into the mountain ground has significant influence on the ground sliding during tunneling in the sloping and stratified stratum.

Suggested Citation

  • Yongxing Zhang & Maoqi Yuan & Weihua Lu & Jian Zhang, 2022. "Cause investigation of ground sliding during tunneling in sloping and stratified stratum," 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. 111(2), pages 1421-1430, March.
    • Handle: RePEc:spr:nathaz:v:111:y:2022:i:2:d:10.1007_s11069-021-05102-z
    DOI: 10.1007/s11069-021-05102-z
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    References listed on IDEAS

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    1. A. Vanuvamalai & K. P. Jaya & V. Balachandran, 2018. "Seismic performance of tunnel structures: 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. 93(1), pages 453-468, August.
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    Cited by:

    1. Hao Chen & Hongpeng Lai & Man Huang & Gang Wang & Qiang Tang, 2022. "Failure mechanism and treatment measures of supporting structures at the portal for a shallow buried and asymmetrically loaded tunnel with small clear-distance," 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. 114(2), pages 2283-2310, November.

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