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.
出处
《金属矿山》
CAS
北大核心
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)
关键词
露天矿破碎带
含水率
安全系数
数值模拟
Open-pit mine broken zone
Moisture content
Factor of safety
Numerical simulation
