云龙河三级水电站大坝下游消能区边坡稳定有限元分析  

A Finite Element Analysis of the Slope Stability at the Downstream Dissipation Districts for the Yunlong River Hydropower Station

作　　者：徐青[1] 徐寅[1] 秦楠[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《中国农村水利水电》2009年第5期85-90,共6页China Rural Water and Hydropower

摘　　要：采用有限单元法研究云龙河三级水电站大坝下游消能区泄洪冲刷坑对边坡稳定性的影响。以开挖的方式模拟泄洪冲刷坑,分析冲刷坑对两岸边坡应力状态、变形状态及稳定性的影响;模拟了两组优势节理,分别研究了岩块和两组节理的点安全度及屈服区分布;采用遗传算法搜索了可能最危险滑动面;阐述了评价大坝下游消能区泄洪冲刷坑对边坡稳定性不利影响的方法。The finite element method is used to analyze the slope stability at the downstream dissipation district of the Yunlong River hydropower project in this paper. Firstly, the washout formed by flood discharging is simulated by the excavation mode, and the effect of the washout for stress status, deformation status and stability of the two slopes is studied. Secondly, the two main joint sets are considered, and the point safety and the distribution of yield region for the rock and the joints are also studied. Thirdly, the potential slide surfaces are probed into by the genetic algorithm method. Finally, the calibration method and criterion of the adverse effect of the flood discharging washout on the slope is expounded.

关 键 词：泄洪冲刷坑 裂隙岩体 边坡稳定分析 有限单元法 

分 类 号：TV64[水利工程—水利水电工程]