Numerical analysis of characteristics of moisture migration in soil slope under rainfall

被引：0
|
作者：
Wen, Guangju [1 ,2 ]
Deng, Wenjie [3 ]
Wen, Feng [4 ]
机构：
[1] Chongqing Inst Geol & Mineral Resources, Chongqing Key Lab Exogen Mineralizat & Mine Envir, Chongqing 400042, Peoples R China
[2] Chongqing Res Ctr, State Key Lab Coal Resources & Safe Min, Chongqing, Peoples R China
[3] Chongqing Southeast Geol Engn Investigat & Design, Chongqing, Peoples R China
[4] Chongqing Univ Posts & Telecommun, Sch Commun & Informat Engn, Chongqing, Peoples R China
来源：
ADVANCES IN CIVIL AND STRUCTURAL ENGINEERING III, PTS 1-4 | 2014年 / 501-504卷
关键词：
slope failure; moisture migration; unsaturated soil mechanics; rainfall; numerical analysis; MECHANISM;
D O I：
10.4028/www.scientific.net/AMM.501-504.1927
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Based on the characteristics of slope failure induced by rainfall, from the point of view of moisture migration and combining unsaturated soil mechanics, the characteristics of moisture migration in slope under different rainfall intensities were analyzed by finite element method. The results reveal that under rainfall, the pore water pressure in slope is in layered distribution, and at the bottom of slope, the pore water pressure is the highest, the top is lower and the middle is the lowest. The volumetric water content is in nonlinear distribution and the degree of nonlinear in unsaturated area is higher than that of the saturated area. The permeability coefficient of soil rises with the increase of rainfall intensity, and when the soil is saturated, its permeability coefficient is saturate permeability coefficient.
引用
收藏
页码：1927 / +
页数：2
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