排土场边坡不同成因及动力稳定性分析的优化设计研究  

Study on optimal design of different causes and dynamic stability analysis of waste dump slope

作　　者：高庆 杨润基 卢许佳 谢东武[3] GAO Qing;YANG Runji;LU Xujia;XIE Dongwu(China Railway Third Bureau Group Co.,Ltd.,Chengdu 611730,China;Sinohydro Bureau 7 Co.,Ltd.,Chengdu 611730,China;Department of Underground Architecture and Engineering,School of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]中铁三局集团有限公司,成都611730 [2]中国水利水电第七工程局有限公司,成都611730 [3]同济大学土木工程学院地下建筑与工程系,上海200092

出　　处：《有色金属（矿山部分）》2023年第2期84-90,共7页NONFERROUS METALS(Mining Section）

基　　金：国家自然科学基金资助项目(41977227)。

摘　　要：松散体形成的排土场的边坡稳定性一直以来是科学界广泛关注的话题,因为根据排土场的堆积方式不同其所造成的边坡的应力-应变形态也不同,产生边坡滑坡的风险也存在差异。为了详细研究松散体堆积形成的排土场边坡的稳定性,采用室内岩石力学试验、FLAC3D数值分析法对3种不同堆积方式(压坡式、覆盖式和混合式)下形成的边坡展开研究,并以研究的各边坡的安全系数、最大剪应变、边坡的水平位移和最大主应力等数据为基础,构造判断矩阵,对3种不同堆积方式形成的边坡进行优选决策分析,经过多条件综合考虑,最终得出排土场采用压坡式排料形成的边坡整体稳定性最佳。The slope stability of the waste dump formed by loose bodies has always been a topic of wide concern in the scientific community because the stress and strain patterns of the slope caused by different stacking modes of the waste dump are different,and the risks of slope landslide are also different.To study the stability of the waste dump slope formed by loose body accumulation in detail,this paper uses the indoor rock mechanics test and FLAC3D numerical analysis method to study the slope formed under three different accumulation modes(slope pressing,covering,and mixed),and constructs a judgment matrix based on the safety coefficient,maximum shear strain,horizontal displacement and maximum principal stress of each slope studied,the optimal decision-making analysis of the slopes formed by three different stacking methods are carried out.After comprehensive consideration of multiple conditions,it is finally concluded that the slope formed by slope-pressing dumping in the waste dump has the best overall stability.

关 键 词：散体堆积边坡 排土场 力学试验 数值模拟 判断矩阵 

分 类 号：TD854.7[矿业工程—金属矿开采]