Instability of unsaturated soil slopes due to infiltration

被引：280
|
作者：
Cho, SE [1 ]
Lee, SR [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Civil Engn, Taejon 305701, South Korea
来源：
COMPUTERS AND GEOTECHNICS | 2001年 / 28卷 / 03期
关键词：
D O I：
10.1016/S0266-352X(00)00027-6
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This paper presents a procedure for calculating the safely factor for an unsaturated 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 two-dimensional finite element flow deformation coupled analysis program. The modified Mohr-Coulomb failure criterion was adopted for unsaturated soil strength to consider 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 rain-induced infiltration. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：185 / 208
页数：24
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