考虑渗流作用下尾矿坝稳定性分析

Stability Analysis of Tailings Dam under Consideration of Vadose Effect

以核桃箐尾矿坝为研究对象,对其尾矿坝的稳定性进行研究,主要通过Rocscience Slide软件建立二维模型对尾矿坝在天然和渗流状态下的稳定性进行分析,从而得到渗流作用对尾矿坝稳定性的影响。采用迈达斯(Midas GTS/NX)软件对研究区整体建立三维地质模型,并用FLAC3D有限差分软件计算分析,计算天然应力状态和渗流应力状态下尾矿坝的应力应变情况,同时对二维和三维分析的方法进行对比分析,为以后同类工程稳定性分析提供一定参考。

This article takes Walnut qing tailings dam as the research object,builds two-dimensional model mainly on Rocscience Slide software to analyze stability in both case of nature and seepage condition,in order to analyze the effect of vadose on tailings dam stability.This paper establishes a three-dimensional geological model of the study area through Midas GTS/NX software and Fast Lagrangian Analysis of Continua,and calculates the stress-strain of tailings dam on condition of both virginal stress state and seepage stress state.Meanwhile,through the comparative analysis of two-dimensional and three-dimensional analysis methods,this article can provide a reference for similar engineering stability analysis.