采空区赋存条件下露天开采边坡参数优化研究  

Study on Optimization of Slope Parameters of Open-pit Mining Under Goaf Occurrence Conditions

作　　者：何伟 钱贵华[4] 尹裕 HE Wei;QIAN Guihua;YIN Yu(Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.;State Key Laboratory of Safety and Health for Metal Mine;Huawei Metal Mineral Resources Efficient Recycling National Engineering Research Center Co.,Ltd.;Kunming Dongchuan Jinshui Mining Co.,Ltd.;School of Resource Environment and Safety Engineering University of South China)

机构地区：[1]中钢集团马鞍山矿山研究总院股份有限公司 [2]金属矿山安全与健康国家重点实验室 [3]华唯金属矿产资源高效循环利用国家工程研究中心有限公司 [4]昆明市东川金水矿业有限责任公司 [5]南华大学资源环境与安全工程学院

出　　处：《现代矿业》2022年第4期245-248,共4页Modern Mining

基　　金：湖南省研究生科研创新项目(编号:CX20200916)。

摘　　要：为研究某矿山地下采空区对露天边坡稳定性的影响,科学合理地确定矿山地下转露天开采工程最优终了边坡角。采用FLAC^(3D)数值模拟软件建立了矿山东部分区和西部分区的边坡力学模型,通过模拟计算得出了边坡岩体的位移和塑性区分布情况。结果表明,采空区对东部分区上盘边坡稳定性影响较大,对东部分区下盘边坡和西部分区上、下盘边坡稳定性影响较小。基于极限平衡法,对露天终了边坡角进行优选,最终得出上盘边坡最优边坡角为37°,下盘边坡最优边坡角为41°。In order to study the influence of underground goaf on the stability of open-pit slope,the optimal overall slope angle of underground to open-pit mining project is scientifically and reasonably deter⁃mined.FLAC^(3D) numerical simulation software was used to establish the slope mechanics model of the east⁃ern and western sections of the mine,and the displacement and plastic zone distribution of the slope rock mass were obtained through simulation calculation.The results show that the goaf has a greater impact on the stability of the upper wall slope in the eastern subregion,and has less influence on the stability of the lower wall slope in the eastern subregion and the upper and lower wall slopes in the western subregion.Based on the limit equilibrium method,the final slope angle of the open-pit mine is optimized,and finally the optimal slope angle of the upper side slope is 37°,and the optimal slope angle of the lower side slope is 41°.

关 键 词：地下转露天开采 采空区 边坡参数优化 

分 类 号：TD804[矿业工程—矿山开采]