文档介绍：第 23 卷第 6 期岩石力学与工程学报 23(6):920~924
2004 年 3 月 Chinese Journal of Rock Mechanics and Engineering March,2004

降雨入渗对边坡稳定影响的实例分析

汪益敏陈页开韩大建莫海鸿
(华南理工大学交通学院广州 510640) (华南理工大学建筑学院广州 510640)

摘要以东江—深圳供水改造工程金湖泵站左岸边坡为例,分析影响边坡稳定的主要原因是地层岩性软弱,地区
降雨量大,降雨入渗边坡后无法排出,聚集在混凝土防护层下,土体吸水软化,强度降低,导致坡面附近安全系
数降低,边坡失稳。采用线弹性有限元及 Mohr-Coulomb 屈服准则进行土体应力、应变和破坏接近度计算,结果
表明,边坡开挖后在自然状态下基本稳定,但随着降雨入渗边坡深度的增大,边坡坡面附近破坏接近度不断提高,
破坏范围逐渐增大,边坡将可能由局部破坏发展为整体滑动破坏。
关键词工程地质,降雨,边坡,有限元,破坏接近度
分类号 TU 457 文献标识码 A 文章编号 1000-6915(2004)06-0920-05

CASE STUDY ON INFLUENCE OF RAINFALL PERMEATION
ON SLOPE STABILITY

Wang Yimin1,Chen Yekai1,Han Dajian2,Mo Haihong2
(1College of Traffic munications,South China Univ. of Technology, Guangzhou 510640 China)
(2College of Architecture and Civil Engineering,South China Univ. of Technology, Guangzhou 510640 China)

Abstract Based on the case of the left bank slope of Jinghu pump station in Dongjiang-Shenzhen water supply
remaking project, the factors influencing the slope stability are analyzed. The main causes of slope sliding are the
soft rock strata in the slope and the large precipitation in this area. The water permeates into the slope body during
the rain and can not be drained away quickly enough,so it concentrates under the concrete cover,and the rock is
softened by it. Therefore,the safety factor of the slope decreases,and