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Deformation and mechanism of landslide influenced by the effects of reservoir water and rainfall, Three Gorges, China

Author

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  • Min XIA
  • Guang REN
  • Xin MA

Abstract

Since the impoundment of the Three Gorges Reservoir in June 2003, numerous preexisting landslides have been reactivated. This paper seeks to find the factors influencing landslide deformation and the relationship between displacement and fluctuation of the reservoir water level, while the displacement and the intensity of rainfall based on monitoring data; 6 years of monitoring were carried out on the Shiliushubao landslide, a old landslide, consisting of a deep-seated main block and two shallow blocks, with a volume of 1,180 × 10 4 m 3 and located on the left bank of the Yangtze River, 66 km upstream of the Three Gorges dam. This landslide was reactivated by the impoundment and since then the landslide body has been experiencing persistent deformation with an observed maximum cumulative displacement of 8,598.5 mm up to December 2009. Based on the monitoring data, we analyzed the relationship between the fluctuation of the reservoir water level and displacement, rainfall and displacement, and found that the rainfall is the major factor influencing deformation for two shallow blocks and the displacement has a positive correlation with the variation of rainfall intensity. The fluctuation of the reservoir water level is the primary factor for main block, and the deformation rate has a negative correlation with the variation of reservoir water level, declined with the rise of the water level and increased with the drawdown of the water level. Copyright Springer Science+Business Media Dordrecht 2013

Suggested Citation

  • Min XIA & Guang REN & Xin MA, 2013. "Deformation and mechanism of landslide influenced by the effects of reservoir water and rainfall, Three Gorges, 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. 68(2), pages 467-482, September.
    • Handle: RePEc:spr:nathaz:v:68:y:2013:i:2:p:467-482
    DOI: 10.1007/s11069-013-0634-x
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    Cited by:

    1. Qiyuan Wang & Jundong Hou, 2023. "Hazard assessment of rainstorm-geohazard disaster chain based on multiple scenarios," 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. 118(1), pages 589-610, August.
    2. Jianjun Zhao & Hanyue Zhang & Changxin Yang & Lee Min Lee & Xiao Zhao & Qiyi Lai, 2020. "Experimental study of reservoir bank collapse in gravel soil under different slope gradients and water levels," 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(1), pages 249-273, May.
    3. Zhiliu Wang & Bo Liu & Yanhui Han, 2023. "Combined influence of rainfall and groundwater on the stability of an inner dump slope," 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. 118(3), pages 1961-1988, September.

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