煤矿排土场边坡变形失稳特征FLAC~(3D)模拟分析

FLAC3D simulation for deformation failure characteristics of mine waste accumulation slope of a coalmine

摘要: 煤矿排土场边坡是一类特殊的人工堆积边坡,它的变形破坏具有自身的特点。由于其堆积材料的特征性,使得煤矸石堆积体及其下部粘土层具有较强的应变软化特征。本文结合四川某煤矿排土场边坡,运用FLAC3D程序对该排土场边坡失稳变形特征进行三维数值模拟分析,分析结果表明:①通过参数软化重现该类边坡失稳变形过程是可行的;②可以通过边坡位移特征寻找其滑面形态和失稳区域;③最大不平衡力是否收敛可以判定边坡的稳定状态。④模拟结果与实际吻合。

Abstract: The mine waste accumulation slope of a coalmine is a kind of special manual accumulation body,its deformation-failure has certain characteristics.The mine wastes and clay layer under them bear much strong strain-softening characteristics.The paper makes 3D numerical simulation for deformation failure characteristics of mine waste accumulation slope of a coalmine in Sichuan Province using FLAC 3D software,the results show:① Recurring the process of deformation failure of the slope is feasible by ...