渗流场和温度场引起边坡灾害预报的有限元法

Finite Element Method for Forecast of Slope Disaster Caused by Seepage Field and Temperature Field

在探索多场耦合影响边坡稳定性因素的基础上,研制出了一个考虑渗流场和温度场对应力场作用的三维强度折减有限元程序。通过与传统极限平衡法分析结果对比研究,对抗剪强度折减有限元法分析边坡稳定问题的适用性进行了评价,得出的结论是:采用三维强度折减有限元法确定考虑渗流场和温度场的边坡稳定性安全系数是可行的。

The finite element method (FEM) program for 3D strength reduction considering effects of the seepage field and the temperature field on the stress field is developed based on the research on factors of many fields coupling affecting slope stability. Through comparison of the results analysis of the FEM with the conventional limit equilibrium, the applicability of using the FEM for shear strength reduction to analyze the slope stability is evaluated. The comparison result shows that it is feasible to use the FEM method for the 3D strength reduction to determine the safety coefficient of the slope stability of the seepage field and the temperature field.