摘要
针对露天矿在开采到界过程中边坡含有断层,到界边坡上部存在外排土场,边坡在到界过程中存在的边坡稳定性具有复杂性问题,结合乌兰图嘎露天矿一采区西帮边坡的工程实际,基于极限平衡理论和数值模拟手段,研究了断层位置对露天矿采场以及采场-排土场复合边坡的滑坡模式及稳定性的影响规律,确保了西帮到界过程中煤炭资源的安全回采.结果表明:断层的存在导致西帮到界边坡的稳定性明显降低,但断层与到界边坡的相对距离对采场边坡稳定性的影响并不明显;当断层存在时,复合边坡的稳定性随着煤柱留设长度的增加,呈现先减小后增加的趋势,到达一定距离后,断层对边坡的影响消失.
Aiming at the complex problem in process of slope of stability to the boundary which contains fault and existing dump upon stope, in combination with the engineering of Wu Lantuga open-pit mine, this paper analyzed the effect on sliding model and stability of position of fault and on stope slope and combination to ensure mining safety in process of slope to the boundary slope based on the limit equilibrium theory and numerical simulation. The results show that slope stability decreases significantly as presence of fault, but the different relative position of fault and slope affects on the stability of stope slope is not obvious; as the distance of fault and slope increasing the stability of combination slope decreases initially and increases subsequently. When distance is beyond certain value the effect of fault on slope disappear.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2016年第8期804-809,共6页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金项目(51104084
51474119)
国家自然科学基金重点项目(U1361211)
高等学校博士学科点专项基金项目(20122121110003)
关键词
断层
复合边坡
边坡稳定性
极限平衡法
数值模拟
fault
slope stability
composite slope
limit equilibrium theory
numerical simulation
