韩江峪黏土心墙土石坝渗流及坝坡稳定性分析

Analysis on Seepage Flow and Dam Slope Stability of Clay Core Wall of Earth-Rock Dam in Hanjiangyu

基于饱和-非饱和渗流理论,应用有限元法计算正常蓄水位、设计洪水位及校核洪水位3种工况下黏土心墙土石坝的渗流场,得到坝体内部浸润线位置及水头等势线分布。采用极限平衡理论,对非饱和渗流作用下的坝体进行稳定性分析,得到各工况下的坝体最小安全系数及最危险滑动面位置。

Based on saturated-unsaturated seepage theory,the method of finite element method is used to calculate the seepage field of the clay core wall earth rock dam under three working conditions of normal storage level,design flood level and check flood water level,and the location of the infiltration line and equipotential line distribution of head are obtained. The ultimate equilibrium theory is used to analyze the stability of dam under unsaturated seepage,and the minimum safety factor and the most dangerous sliding surface of the dam under various working conditions are obtained.