Sensitivity Analysis of Maliulin Landslide Stability Based on Orthogonal Design

被引：1
|
作者：
Liu Y. [1 ,2 ]
Zhao B. [1 ]
Yin K. [2 ]
Chen L. [3 ]
Gui L. [2 ]
Liang X. [2 ]
机构：
[1] China Electric Power Research Institute Co. Ltd., Beijing
[2] Faculty of Engineering, China University of Geosciences, Wuhan
[3] Institute of Geophysics & Geomatics, China University of Geosciences, Wuhan
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2019年 / 44卷 / 02期
关键词：
Maliulin landslide; Orthogonal design; Sensitivity analysis; Stability; Three Gorges Reservoir;
D O I：
10.3799/dqkx.2018.195
中图分类号：
学科分类号：
摘要：
Taken Maliulin landslide as a case, the friction angle, cohesive strength, hydraulic conductivity, immersion ratio, reservoir drawdown rate and rainfall are chosen as influential factors and orthogonal experiment was carried out. Sensitivity analysis was performed using range analysis.Results show that the stability of Maliulin landslide is mainly influenced by its self-factors, and the reservoir and rainfall have limited impact on landslide stability. Landslide stability is most sensitive to friction angle, followed by hydraulic conductivity, cohesive strength and immersion ratio. The initial landslide stability is mainly influenced by friction angle and cohesive strength. As the decreasing of immersion ratio, the landslide stability has limited increase. The changed ratio of factor of safety is mainly influenced by hydraulic conductivity in which a critical value K0 existed. When hydraulic conductivity is greater than K0, the landslide stability increases with the increasing of permeability coefficient. On the contrary, the landslide stability decreases with the decreasing of hydraulic conductivity when hydraulic conductivity is less than K0. © 2019, Editorial Department of Earth Science. All right reserved.
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页码：677 / 684
页数：7
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