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。
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：①Recurring the process of deformation failure of the slope is feasible by parameters softening;②Searching the slope slide face and region of failure by its deformation characteristics;③Judging stability state of the slope by the maximum unbalance force is or not constringency;④The result of simulation agrees with the fact.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2008年第6期61-65,共5页
Hydrogeology & Engineering Geology
基金
重庆大学人才引进基金资助
关键词
排土场
变形
FLAC^3D
应变软化
稳定性
mine waste accumulation slope
deformation
FLAC
strain - softening
stability
