Abstract
Due to the periodic rising and falling of the reservoir water level, the rock–soil body of bank slope is constantly changing between the saturated and unsaturated status, which changes the limit equilibrium condition of the slope body, resulting in a large number of dormant landslide reactivation and new landslide generation after water impounding operation of the three gorges reservoir. Based on the long-term monitoring data of pore-water pressure, water content, reservoir water level, rainfall and landslide deformation, the deformation response regularity of Liujiaba landslide under the fluctuating reservoir level combined scenario is studied in this paper. The results show that the landslide deformation is mainly in the lower section affected by the fluctuation of the reservoir water. The slide deformation appears in the mid-early stage of the water level declining and during the running of 175 m water level. The deformation is gradually increasing from a slowly to rapidly stage, then slows down and gradually reduces to a relative stopped state. Considering that the variation of the saturation line in the landslide will be influenced by the water level fluctuation rate, the SEEP and SLOPE modules are used with Geo-studio software for the fluctuant reservoir level and response pattern of landslide deformation analysis. The study can be provided as a reference for landslides study of debris aggradational landslide.
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References
Desai CS (1977) Drawdown analysis of slopes by numerical methods. J Geotech Eng ASCE 103:667–676
Guo ZH, Zhou CB, Sheng Q et al (2005) Influence of reservoir water level variation on slope stability. Rock Soil Mech 26:29–33. https://doi.org/10.16285/j.rsm.2005.s2.029
Le QL, Wang HD, Xue XQ et al (2011) Relationship between the deformation features of the huayangyangjichang landslide and water level changes in the three gorges reservoir area. Hydrogeol Eng Geol 38:68–73. https://doi.org/10.16030/j.cnki.issn.1000-3665.2011.06.009
Liu XX, Xia YY, Zhang XS et al (2005a) Effects of drawdown of reservoir water level on landslide stability. Chin J Rock Mech Eng 24:1439–1444
Liu XX, Xia YY, Lian C et al (2005b) Research on method of landslide stability valuation during sudden drawdown of reservoir level. Rock Soil Mech 26:1428–1433. https://doi.org/10.16285/j.rsm.2005.09.016
Morgenstern NR (1963) Stability charts for earth slopes during rapid draw down. Geotechnique 13:121–131
Neuman SP, Narasimhan TN, Witherspoon PA (1977) Application of mixed explicit-implicit finite element method to nonlinear diffusion-type problems. Finite elements in water resources. Pentech Press, London
Rong G, Zhang W, Zhou CB (2005) Numerical analysis of saturated-unsaturated seepage problem of rock slope under rainfall infiltration. Rock Soil Mech 26:1545–1551. https://doi.org/10.16285/j.rsm.2005.10.005
Song K, Yan EC, Zhu DP et al (2011) Base on permeability of landside and reservoir water change to research variation regularity of landslide stability. Rock Soil Mech 32:2798–2803. https://doi.org/10.16285/j.rsm.2011.09.034
Sun YJ, Guo N, Pan ST (2014) Research on response relationship between seepage field in landslide and reservoir water level fluctuation: case of Lijiapo landslide in three gorges reservoir area. Yangtze River 45:66–69. https://doi.org/10.16232/j.cnki.1001-4179.l2014.07.003
Tang XS, Zheng YR (2007) Effect of excess pore-water pressure on stability of slopes under drawdown condition. Hydro Sci Eng 1:1–6. https://doi.org/10.16198/j.cnki.1009-640x.2007.01.001
Wen BP, Shen J, Tan JM (2008) The influence of water on the occurrence of Qianjiaping landslide. Hydrogeol Eng Geol 3:12–18. https://doi.org/10.16030/j.cnki.issn.1000-3665.2008.03.016
Xia H, Liu JL (2005) The influence of water level fluctuation on the bank slope stability. Geotech Eng Tech 19:292–296
Xu Q, Tang MG, Xu KX et al (2008a) Research on space-time evolution laws and early warning-prediction of landslides. Chin J Rock Mech Eng 27:1104–1112
Xu Q, Chen JJ, Zhang W (2008b) The study of the time effect of bank collapse by physical modeling. Hydrogeol Eng Geol 35:58–61. https://doi.org/10.16030/j.cnki.issn.1000-3665.2008.04.017
Xue DJ (2010) Application of RS and GIS in geological disaster risk assessment—case study in Qing Chuan and Ping Wu county. Chengdu University of Technology, Chengdu
Yang ZJ, Qiao JP, Tian HL et al (2010) Study on rainfall-induced regional geohazards prediction following Wenchuan earthquake. J Sichuan Univ (Eng Sci Ed) 42:38–43. https://doi.org/10.15961/j.jsuese.2010.s1.003
Yang Q, Ye ZN, Gao YL (2014) Response relationship of riparian zone of the landslide mass with reservoir water fluctuation conditions. J Catastrophol 29:29–32. https://doi.org/10.3969/j.issn.1000-811X.2014.02.007
Zheng YR, Tang XS (2007) Stability analysis of slopes under drawdown condition of reservoirs. Chin J Geotech Eng 29:1115–1121
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Shen, J., Gao, Y., Wen, L. et al. Deformation response regularity of Liujiaba landslide under fluctuating reservoir water level condition. Nat Hazards 94, 151–166 (2018). https://doi.org/10.1007/s11069-018-3378-9
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DOI: https://doi.org/10.1007/s11069-018-3378-9