摘要
为了研究露井联合开采条件下的岩层活动规律,对边坡破坏机理进行深入分析,根据某矿露井联合开采的技术条件和岩土体力学性质等参数建立数值计算模型,运用真实破裂过程分析软件(RFPA)对边坡岩体随工作面推进时的变形、破坏情况进行了数值模拟。通过对不同平盘位移量的分析,验证了水平煤层露井联采条件下边坡岩体破坏规律存在3个破坏分区。根据分区情况对边坡岩体的破坏特征进行分析,进而对整个边坡的稳定性进行评价。
In order to research strata movement rule and slope failure mechanism in open-underground combined mining,a numerical simulation model was set up to analyze deformation and failure of slope rock during underground mining with RFPA based on mining technical condition and rock mechanic properties.3 failure partitions of slope rock were verified in open-underground combined mining by analyzing displacement of platform.On the basis of this,failure characteristic of slop rock was analyzed and slope stability was evaluated.
出处
《煤矿开采》
北大核心
2012年第2期106-108,92,共4页
Coal Mining Technology
基金
煤炭科学研究总院科技发展基金(2011CX04)
关键词
RFPA
露井联采
变形分区
边坡破坏机理
声发射
RFPA
open-underground combined mining
deformation partition
slope failure mechanism
acoustic emission
