降雨入渗条件下非饱和土边坡稳定分析  

Analysis for Stability of Unsaturated Soil Slope under rainfall infiltration

作　　者：倪晓雯 梅国永 李春良 杨晓松 Ni Xiaowen;Mei Guoyong;Li Chunliang;Yang Xiaosong(Shandong Academy of Building Sciences Co.,Ltd.,Jinan Shandong 250031,China;Shandong Provincial Transportation Planning and Design Institute Group Co.,Ltd.,Jinan Shandong 250031,China)

机构地区：[1]山东省建筑科学研究院有限公司,山东济南250031 [2]山东省交通规划设计院集团有限公司,山东济南250031

出　　处：《港口航道与近海工程》2024年第3期76-81,共6页Port,Waterway and Offshore Engineering

摘　　要：边坡稳定性研究是目前岩土工程界的一个热点课题,国内外许多学者对此进行了大量的研究,并取得了不少有意义的成果,但这些研究工作大都是针对饱和土边坡进行的,对非饱和土边坡的研究较少。边坡的表层土大部分是非饱和土,并且长期面对重复的降雨与蒸发过程,降雨入渗诱发的滑坡带来了日益严重的工程危害。本文以不同吸力路径及应力状态条件下量测的土水特征曲线作为模型函数,模拟降雨入渗条件下非饱和土边坡中吸力分布的变化,进而分析降雨入渗条件下非饱和土边坡稳定性,得到降雨引起斜坡稳定性变化的规律,为滑坡的预测和防治提供参考依据。At present,slope stability is a hot topic related to geotechnic engineering,and a lot of researches have been carried out in China and abroad,which lead to some significant achievements.However,most of these researches are subject to saturated soil slope.In general,the surface of slope is mostly covered with unsaturated soil,due to the continued rainfall and evaporation for a long time,the landslides caused by rainfall infiltration have brought increasingly serious engineering hazards.The curves of soil water characteristics subject to the difference in suction path and stress state serve as model functions to simulate the changes in the suction distributed within the range of unsaturated soil slope under the condition of rainfall infiltration.Furthermore,the stability of unsaturated soil slope subject to rainfall infiltration is analyzed,which produces the law of change in slope stability caused by rainfall,and provides a reference for landslide prediction and control.

关 键 词：边坡 饱和土 非饱和土 降雨入渗 边坡稳定性 

分 类 号：TU432[建筑科学—岩土工程]