孔梁水库暗河溶洞堵头三维非线性有限元计算分析

Three-dimensional nonlinear finite element analysis of blocking body in karst cave of underground river in Kongliang reservoir

本文采用三维非线性有限单元法,分别用点强度储备法和超载法模拟岩体渐进变形破坏过程,揭示了孔梁水库河暗河堵体围岩的工作性态。结果表明:堵体最大顺河向位移发生在堵体迎水面上,而横向变位值很小。

The paper adopts three-dimensional nonlinear finite element method to stimulate the failure process of rock mass by the point strength reserve method and the overload method separately, revealing the working behaviour of blocking body in the karst cave of underground river in Kongliang reservoir. The result indicates that the maximum displacement along river takes place on the A-A water face of blocking body, the transverse displacement is very small.