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Effects of seepage on a three-layered slope and its stability analysis under rainfall conditions

Author

Listed:
  • Yixuan Wang

    (Xi’an University of Technology)

  • Junrui Chai

    (Xi’an University of Technology)

  • Jing Cao

    (Xi’an University of Technology)

  • Yuan Qin

    (Xi’an University of Technology)

  • Zengguang Xu

    (Xi’an University of Technology)

  • Xianwei Zhang

    (Xi’an University of Technology)

Abstract

The seepage and stability of unsaturated soil slopes under torrential rain conditions are key issues in geotechnical and hydraulic engineering. In this work, based on the generalized limit equilibrium method, the stability of nonhomogeneous slopes with three layers was investigated. The effects of rainfall on the volume water content, pore water pressure and the stability of the slope were evaluated, and rainfall cycles and rainfall intensities were considered. The results show that the stability of the slope decreased with increasing rainfall intensity until it was destroyed. The safety factor of the slope is lowest in a period of time after the rain stops. This condition means that the slope is more prone to damage. The seepage field and stress field of the slope were significantly changed with increasing rainfall, and finally, the slope became unstable.

Suggested Citation

  • Yixuan Wang & Junrui Chai & Jing Cao & Yuan Qin & Zengguang Xu & Xianwei Zhang, 2020. "Effects of seepage on a three-layered slope and its stability analysis under rainfall conditions," 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. 102(3), pages 1269-1278, July.
    • Handle: RePEc:spr:nathaz:v:102:y:2020:i:3:d:10.1007_s11069-020-03966-1
    DOI: 10.1007/s11069-020-03966-1
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    Cited by:

    1. Shaoling Li & Chi Qiu & Jiankun Huang & Xiaoping Guo & Yucun Hu & Al-Shami Qahtan Mugahed & Jin Tan, 2022. "Stability Analysis of a High-Steep Dump Slope under Different Rainfall Conditions," Sustainability, MDPI, vol. 14(18), pages 1-18, September.
    2. Long Wang & Wenhua Liu & Wei Hu & Wugang Li & De’an Sun, 2021. "Effects of seismic force and pore water pressure on stability of 3D unsaturated hillslopes," 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. 105(2), pages 2093-2116, January.

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