非饱和土瞬态渗流无限边坡稳定性研究  

STUDY OF TRANSIENT SEEPAGE INFINITE SLOPE STABILITY IN UNSATURATED SOILS

作　　者：徐杰 李湛 XU Jie;LI Zhan(Guangdong Metallurgical Architectural Design and Research Institute Co.,Ltd.,Guangzhou 510062,China)

机构地区：[1]广东省冶金建筑设计研究院有限公司,广州510062

出　　处：《低温建筑技术》2024年第6期87-90,共4页Low Temperature Architecture Technology

摘　　要：预测浅层滑坡的位置和时间是减少降雨型滑坡灾害的重要手段。文中基于极限平衡法的边坡稳定性分析理论,提出用于瞬态非饱和渗流条件下的无限边坡稳定性分析方法,研究了粗砂、中砂和细砂3种假定材料组成的陡峭边坡破坏的时机,滑坡预测结果与现场监测数据相吻合,验证了滑坡预测方法的有效性。Predicting the location and timing of shallow landslides is an important means of reducing rainfall-type landslide disasters.Basing on the theory of slope stability analysis of limit equilibrium method,an infinite slope sta-bility analysis method for transient unsaturated seepage conditions is proposed,which uses pressure head and volu-metric water content profile and combines with the effective stress to carry out the slope stability analysis.The tim-ing of the destruction of steep slopes is also investigated,consisting of the coarse,medium,and fine sand.The results of the landslide prediction coincide with the on-site monitoring data.The landslide prediction results match with the field monitoring data,which verifies the validity of the landslide prediction method.

关 键 词：非饱和土 瞬态渗流 无限边坡 滑坡预测 边坡稳定性 

分 类 号：TU433[建筑科学—岩土工程]