Dynamic influence of sustained small-rainfall infiltration on stability of unsaturated soil slope

被引：0
|
作者：
Liu, Zizhen [1 ,2 ,3 ]
Yan, Zhixin [1 ,2 ]
Peng, Ningbo [1 ,2 ]
Duan, Jian [1 ,2 ]
Ren, Zhihua [1 ,2 ]
机构：
[1] Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, Lanzhou University, Lanzhou 730000, China
[2] School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
[3] School of Civil Engineering and Architecture, Taizhou University, Taizhou 318000, Zhejiang, China
来源：
Tumu Jianzhu yu Huanjing Gongcheng/Journal of Civil, Architectural and Environmental Engineering | 2012年 / 34卷 / 04期
关键词：
Shear strength - Moisture determination - Slope stability - Infiltration - Moisture - Rain;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Taking the moisture content as main control parameter of shear strength of the soil, we analyze the variational properties of moisture content and shear strength with the change of rainfall time during the small sustained rainfall infiltration, and establish the relationships between total cohesion as well as effective angle of friction and the time of sustained small-rainfall infiltration into an unsaturated slope. With the rainfall infiltration, the influence area of slope expands. Through the strength reduction method based on FLAC3D, the dynamic safety factor of slope in different time and the duration time before the failure of the slope are obtained. The results show that the slope critical sliding surface is yet unsaturated during a sustained small rainfall.
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页码：19 / 23
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