非线性心墙坝渗流及坝坡稳定性分析

ANALYSIS OF THE SEEPAGE AND SLOPE STABILITY OF NONLINEAR CORE WALL DAM

土石坝的坝坡稳定和渗流是影响土石坝安全和蓄水的重要因素,文中采用非线性极限法对本实例土石坝进行坝坡稳定和渗流分析。基于有效应力的方式,采取非线性离散结构土体,考虑了地震荷载和渗流作用建立极限分析的非线性规划模型。运用非线性迭代法对本实例土石坝进行非线性坝坡稳定及渗流模拟计算。得出非线性模型下土石坝坝坡滑移和渗流规律,对工程仿真分析有一定意义。

The seepage and the stability of the dam slope of earth - rock dam are key factors that af- fect its safety and waterstoring capacity. In the article, the nonlinear limit method was used to analyze the seepage and stability. Based on the effective stress approach, the nonlinear discrete structure of soil was taken, and nonlinear programming model of limit analysis that took the seismic load and the effect of the seepage was established. Then, the nonlinear iterative method was used to solve the model of the nonlinear slope stability and the seepage about the earth - rock dam. The regularity about the slip and seepage of dam slope was got, which has certain significance on engineering simulation.