锦屏一级高拱坝整体稳定分析与评价

介绍了锦屏一级高拱坝针对复杂地基的系统加固处理方案，并结合三维非线性有限元数值仿真分析和超载地质力学模型试验，分析了高拱坝的坝基变形、基础的破坏特征、点安全度及整体稳定性；考虑坝基岩体高应力和高渗压作用下，试验研究了软弱结构面可能的降强幅度，并通过综合法地质力学模型试验，揭示了大坝与基础破坏的另一种模式。综合三维数值计算和地质力学模型试验研究成果，依据评判准则，锦屏一级高拱坝整体稳定安全度较高，可满足设计要求。

Overall Stability Analysis and Evaluation of Jinping I High Arch Dam

The systematic reinforcement scheme for Jinping I high arch dam with a complex foundation is introduced . Then, the foundation deformation , failure characteristics, point safety factor and overall stability of the dam are analyzed with three-dimensional nonlinear finite element simulation and overloading geomechanical model test .Strength reduction ratio for weak structural plane is determined with considering the high stress and seepage pressure in foundation rock .A different failure mode of the dam and foundation is also revealed by the synthetic geomechanical model test .Results of numerical simulation and model test show that the overall stability of Jinping I high arch dam is good and satisfies the de -sign requirement .