沙坝水电站高边坡稳定性的数值仿真模拟及其结构优化

在水利水电工程建设过程中，高陡边坡的开挖卸荷及其稳定性问题日益凸显了出来．采用离散化的数值模拟技术来模拟分析该类高边坡的稳定性并据此提出合理、经济的防护治理措施是目前解决这一难题的有效途径之一．根据务川县沙坝水电站厂房后缘开挖后101m高的岩质高陡边坡的工程地质条件，利用ANSYS5．7大型有限元分析系统对该岩质高边坡开挖过程中应力场及位移场的空间变化特征进行了数值仿真模拟，并用以优化其结构设计，提出了合理经济的治理方案，并指导治理工程施工，取得了较好的防治效果．

Numerical simulation and structure optimum scheme on stability of high cutting slope of Shaba Hydropower Station

The problems from unload and instability on the cutting high slope have been increasingly emerging during the constructions of the projects of water resources and hydropower. One of the effective way to solve the problems is that simulating the stability of this kind of slope with the numerical model technique of discretization and then making valid and economic methods for the treatments concerned. Based on engineering geological condition of Shaba hydropower station in Wuchuang county, the stress fields and displacement fields therein are analyzed with ANSYS5.7 FEM analysis system, from which an optimal design scheme is developed and some valid treatment effects are obtained during the construction as well.