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Application of Well Drainage on Treating Seepage-Induced Reservoir Landslides

Author

Listed:
  • Zongxing Zou

    (Three Gorges Research Center for Geo-hazards, China University of Geosciences, Wuhan 430074, China)

  • Sha Lu

    (School of Engineering, China University of Geosciences, Wuhan 430074, China)

  • Fei Wang

    (Three Gorges Research Center for Geo-hazards, China University of Geosciences, Wuhan 430074, China)

  • Huiming Tang

    (Three Gorges Research Center for Geo-hazards, China University of Geosciences, Wuhan 430074, China
    School of Engineering, China University of Geosciences, Wuhan 430074, China)

  • Xinli Hu

    (School of Engineering, China University of Geosciences, Wuhan 430074, China)

  • Qinwen Tan

    (Three Gorges Research Center for Geo-hazards, China University of Geosciences, Wuhan 430074, China)

  • Yi Yuan

    (Department of Land and Resources of Hubei Province, Wuhan 430074, China)

Abstract

In the process of rapid drawdown of reservoir water level, the seepage force in the slide mass is an important factor for the stability reduction and deformation increment of many landslides in the reservoir areas. It is feasible to improve the stability of seepage-induced landslide by employing a drainage well to reduce or eliminate the water head difference that generates the seepage force. In this paper, the Shuping landslide, a typical seepage-induced landslide in the Three Gorges Reservoir area of China, is taken as an example. A series of numerical simulations were carried out to figure out the seepage field, and the Morgenstein–Price method was adopted to calculate the landslide stability. Then the influence of horizontal location of the drainage well, drainage well depth, drainage mode on the landslide treatment effect, and the applicability of drainage well were analyzed. The results show that: (1) landslide stability increases obviously with the well depth in the slide mass, while the increment of landslide stability with the well depth is limited in the slide bed; (2) the sensitivity of the stability improvement with the depth is greater than that with the horizontal positions of the drainage wells in the slide mass; (3) the drainage well is suggested to be operated when the reservoir water falls rather than operates all the time; and (4) the drainage method is most suitable for landslides with low and medium permeability. These results provide deep insights into the treatment of seepage-induced landslides.

Suggested Citation

  • Zongxing Zou & Sha Lu & Fei Wang & Huiming Tang & Xinli Hu & Qinwen Tan & Yi Yuan, 2020. "Application of Well Drainage on Treating Seepage-Induced Reservoir Landslides," IJERPH, MDPI, vol. 17(17), pages 1-20, August.
  • Handle: RePEc:gam:jijerp:v:17:y:2020:i:17:p:6030-:d:400993
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    References listed on IDEAS

    as
    1. Junwei Ma & Xiao Liu & Xiaoxu Niu & Yankun Wang & Tao Wen & Junrong Zhang & Zongxing Zou, 2020. "Forecasting of Landslide Displacement Using a Probability-Scheme Combination Ensemble Prediction Technique," IJERPH, MDPI, vol. 17(13), pages 1-23, July.
    2. Ren Peng & Yujing Hou & Liangtong Zhan & Yangping Yao, 2016. "Back-Analyses of Landfill Instability Induced by High Water Level: Case Study of Shenzhen Landfill," IJERPH, MDPI, vol. 13(1), pages 1-17, January.
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    Cited by:

    1. Mingkun Pang & Hongyu Pan & Hang Zhang & Tianjun Zhang, 2022. "Experimental Investigation of the Effect of Groundwater on the Relative Permeability of Coal Bodies around Gas Extraction Boreholes," IJERPH, MDPI, vol. 19(20), pages 1-21, October.
    2. Zhao Li & Da Huang, 2023. "Stability analysis of a water-rich slope stabilized by a novel upper-hollow drainage anti-slide pile," 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. 117(1), pages 425-446, May.

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