基于强度折减法的露天矿边坡稳定性分析  

Slope stability analysis of open-pit mine based on strength reduction method

作　　者：洪勇[1,2] 李克民[1,2] 孙会朝[1,2] 王天才[1,2] 周伟[1,2] 

机构地区：[1]中国矿业大学矿业工程学院,江苏省徐州市221008 [2]煤炭资源与安全开采国家重点实验室,江苏省徐州市221008

出　　处：《中国煤炭》2011年第5期55-57,共3页China Coal

基　　金：十一五国家科技支撑计划项目(2006BAB16B00);博士点基金项目资助(20100095110019);煤炭资源与安全开采国家重点实验室自主研究课题资助(SKLCRSM10X01);中央高校基本科研业务费专项资金资助(2010QNA33;2010ZDP01A02)

摘　　要：基于有限元强度折减理论,使用phase2数值模拟软件模拟分析露天矿边坡的稳定性,结果表明,通过对岩体边坡模型进行强度折减,边坡体塑性区从坡顶至坡底贯通时边坡体破坏,故认为折减系数即边坡的安全系数,在数值模拟中则表现为计算的不收敛性,为露天矿山生产准确判断边坡体的破坏和确定安全系数具有实际的指导意义。This article simulates and analysis an actual open-pit mine slope stability using the phase2 numerical simulation software,which is based on the finite element strength reduction theory,the results show that the reduction factor is the safety factor of slope,the strength reduction was determined through the model of the rock mass slope,slope body failure when the plastic zone developed from slope top to toe,which means the program non-convergence in the numerical simulation,this article have the practical significance which can accurate judge the failure of the slope body and determine the safety factor.

关 键 词：露天矿 边坡稳定 强度折减法 数值模拟 

分 类 号：TD824.7[矿业工程—煤矿开采]