PARAMETRIC STUDY ON THE EFFECT OF RAIN INFILTRATION ON STABILITY OF UNSATURATED EXPANSIVE SOIL SLOPE
Yao Hailin1，2， Zheng Shaohe1， Li Wenbin3， Chen Shouyi2
(1 Shool of Civil Engineering and Mechanics，Shanghai Jiaotong University， Shanghai 200030 China) (2 Institute of Rock and Soil Mechanics，The Chinese Academy of Sciences， Wuhan 430071 China) (3 Yidang Highway Developing Co. Ltd.， Yichang 443000 China)
Abstract：The parametric study on the effect of rain infiltration on unsaturated expansive soil slope is made. Transient seepage due to rain infiltration is computed using the finite element method. The results of numerical simulation show that crack is of a great influence on the distributions of both pore pressure and volumetric water content. The safety factors of slopes of expansive soils will decrease with increment of permeability coefficient，which is different from that of other clay slope. The deeper the crack，the smaller the safety factor of slope of expansive soil is. Moreover, rain duration can also strongly affect the transient flows and henee the stability of slope.
姚海林1，2 郑少河2 李文斌3 陈守义1. 降雨入渗对非饱和膨胀土边坡稳定性影响的参数研究[J]. 岩石力学与工程学报, 2002, 21(07): 1034-1039.
Yao Hailin1，2， Zheng Shaohe1， Li Wenbin3， Chen Shouyi2. PARAMETRIC STUDY ON THE EFFECT OF RAIN INFILTRATION ON STABILITY OF UNSATURATED EXPANSIVE SOIL SLOPE. , 2002, 21(07): 1034-1039.
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2002, Vol. 21 
