破碎带水理特性对大孤山铁矿边坡稳定性的影响  

Influence on Slope Stability of the Hydraulic Characteristics of Dagushan Iron Mine Broken Zone

作　　者：刘志仲[1] 法立滕[1] 马宁[1] 李辉[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院

出　　处：《金属矿山》2012年第7期56-58,共3页Metal Mine

基　　金：国家自然科学基金项目(编号:51174208;51034005);中央高校基本科研业务费专项资金项目(编号2011YL01)

摘　　要：针对大孤山露天矿破碎带在暴雨下的稳定性问题,重点分析水理特性对稳定性的影响。利用FLAC2D软件进行数值分析,结果表明:黏土矿物含量很大程度上影响着岩体的水理性质,进而影响其稳定性。随着含水率的增加,边坡的强度逐渐降低,安全系数也呈减小趋势。当含水率达到7.39%时,安全系数为1,边坡处于极限平衡状态;当含水率大于这个值时边坡发生破坏。According to Dagushan open-pit mine broken zone of stability issues in rainstorm,hydraulic characteristics on the impact of the stability was simulated by FLAC2D.The results show that the content of clay mineral is largely influenced hydraulic characteristics of rock,high content of clay mineral reduce its water stability,thus affecting the its stability.With water content increase,the slope of strength reduced gradually.Factor of safety also decrease with the increase of water content.When the moisture content reaches 7.39%,factor of safety is 1,and the slope is in limit equilibrium state.When the moisture content is larger than 7.39%,the slope failure happens.

关 键 词：露天矿破碎带 含水率 安全系数 数值模拟 

分 类 号：TU457[建筑科学—岩土工程]