TY  - JOUR
PY  - 2006//
TI  - Effect of Rainfall on Stability of Anisotropic Soil Slope
JO  - Yantu Lixue
A1  - Fan, YW
A1  - Zhang, Yunlong
A1  - Jin, Xian-Long
A1  - Ma, Ya-Qun
SP  - 1097
EP  - 1102
VL  - 27
IS  - Suppl
N2  - This paper presents a procedure for calculating the safety factor for an unsaturated and anisotropic slope suffering from rainfall infiltration. The process of infiltration into a slope due to rainfall and its effect on soil slope behavior were examined using a one-dimensional finite element flow deformation coupled analysis program. The modified Mohr-Coulomb failure criterion was adopted for unsaturated soil strength considering variations in strength due to the presence of matric suction. A safety factor was calculated based on the smoothed stress field obtained from finite element analysis; and an optimization technique was used to search for a critical slip surface. Some numerical examples are analyzed. The results illustrate a typical process of infiltration into unsaturated soil slopes and the effect of hydraulic conductivity on slope stability during reinfall-induced infiltration. And the analytical data indicate that the existence of the cranny has a distinct effect on anisotropic slope stability. The effect of cranny should be considered in analyzing stability of slope infiltrating by rainfall.<p />
LA  - 
SN  - 1000-7598
UR  - http://dx.doi.org/
ID  - ref1
ER  -