Abstract: The sudden sliding of dam body may lead to failure of the landslide dam. In this paper, study of three-dimensional transient seepage and analysis of slope stability of landslide dam are carried out. The three-dimensional slope stability model and transient seepage model are coupled in the numerical simulation, and the water movement measurement and failure surface observation test are carried out in the flume. The predicted results of water distribution at different dam parts and the critical sliding surface are very close to the experimental results.

Key words: seepage, slope stability, 3D model, numerical simulation, laboratory test

摘要： 坝体的突然滑动可能导致滑坡堆积坝的破坏。研究滑坡堆积坝的三维瞬态渗流及边坡稳定性分析，数值模拟采用三维边坡稳定模型与瞬态渗流模型耦合，在水槽中进行了坝体水分运动测量和破坏面观测试验。结果表明，预测的坝体不同部位和临界滑动面的水分分布与试验结果非常接近。

关键词: 渗流, 边坡稳定, 三维模型, 数值模拟, 室内试验