基于数值模拟的露天边坡强度折减法稳定性分析

基于有限差分强度折减理论，利用FLAC软件对某露天矿边坡的稳定性进行了数值计算分析，分别得到了迭代步数突变、计算不收敛和塑性区贯通3种不同条件下的边坡安全系数。通过对以上结果的分析，得出边坡破坏在数值模拟中表现为计算的不收敛，塑性区的贯通只是边坡破坏的必要条件。

Analysis the Stability of Slope in Open-pit Mine by Strength Reduction Methods Based on Numerical Simulation

Based on the theory of finite difference strength reduction，numerical simulation was carried out on the stability of the open pit slope using FLAC. Some safety parameters have been reported under mutations of iteration numbers，non-convergence of the calculation，and the plastic zone connection. The result shows that the slope damage can be revealed to be non-convergence of the calculation in the numerical simulation，while the connection of plastic zone is only the necessary condition of the slope damage.