降雨引起的边坡位移研究  

Study on slope displacements due to rainfall

作　　者：戚国庆[1] 黄润秋[1] 

机构地区：[1]成都理工大学地质灾害防治国家专业实验室,四川成都610059

出　　处：《岩土力学》2004年第3期379-382,共4页Rock and Soil Mechanics

基　　金：国家自然科学基金重大研究计划项目资助(编号:90102002)

摘　　要：边坡和滑坡的变形是非常复杂的问题,同时也是滑坡灾害预报与预警的一个重要指标。由降雨引起的边坡位移与边坡体中非饱和土体基质吸力变化产生的应变有关。依据实验数据,笔者对非饱和土中基质吸力变化产生的应变进行了研究。建立了非饱和土应变与含水量的变化关系。在此基础上,对降雨引起的边坡位移机制、规律进行了探讨。并对武都古滑坡蠕滑位移进行了分析。The deformation of a slope and landslide is a very complex problem, and is an importance index value of forecasting and prewarning the landslide hazard. The displacement of slope due to rainfall is related to suction and the stress-strain behavior of unsaturated material. According to test data, the effect of suction on the stress-strain behavior of unsaturated soils is researched; and the moisture content-strain behavior of unsaturated soils is built. Based on this, the mechanism and regularity of slope the displacements due to rainfall have been discussed. The Wudu landslide is analyzed by this theory.

关 键 词：非饱和土 基质吸力 土—水特征曲线 非饱和土本构模型 

分 类 号：TU441[建筑科学—岩土工程]