降雨条件下边坡裂缝的演化机制及对边坡稳定性影响——以云南省双柏县丁家坟滑坡为例  

Evolutionary Mechanism of Slope Fissures during Rainfall and Their Effect on Slope Stability——A Case Study of Dingjiafen Landslide in Shuangbo Country,Yunnan

作　　者：刘华磊[1] 徐则民[1] 张勇 王志奇 

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650224 [2]云南省公路科学技术研究所,云南昆明650051

出　　处：《灾害学》2011年第1期26-29,共4页Journal of Catastrophology

基　　金：国家自然科学基金项目(40572159;40772189);交通部西部科技项目(200831876723)

摘　　要：边坡的失稳与降雨有着密切的关系。以云南省双柏县丁家坟滑坡为例,阐述了降雨条件下边坡裂缝的演化是由于受到地表横向径流和边坡临空条件的影响。这些形成的裂缝又给地表水入渗提供了主要通道,使地表水易到达边坡体内部的软弱结构面,大大降低了边坡体的稳定性。Slope instability is closely related to rainfall.Taking the Dingjiafen landslide in Shuangbo Country,Yunnan as an example,the paper describes that evolution of slope fissures is due to influence of surface runoff and hanging slope during rainfall.These fissures provide main channel of surface water to the internal weak structure of slope,which greatly reduce the stability of slope.

关 键 词：降雨 裂缝 演化机制 边坡稳定 云南双柏县 丁家坟滑坡 

分 类 号：TU432[建筑科学—岩土工程] P642.22[建筑科学—土工工程]