阿希金矿露天坑回填与井下协同开采安全稳定性分析  

Safety and Stability Analysis of Open-pit Backfilling and Underground Collaborative Mining in Axi Gold Mine

作　　者：范庆 FAN Qing(Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.;State Key Laboratory of Safety and Health for Metal Mine)

机构地区：[1]中钢集团马鞍山矿山研究总院股份有限公司,安徽省马鞍山市243000 [2]金属矿山安全与健康国家重点实验室

出　　处：《现代矿业》2021年第7期224-227,248,共5页Modern Mining

摘　　要：由于露天坑回填后改变了围岩物理环境的天然应力场,使围岩产生了位移和变形。为探讨阿希金矿协调开采的安全稳定性,通过现场调查、取样、试验确定岩石物理力学参数,采用FLAC^(3D)软件对露天坑边坡及坑底的稳定性和露天回填及后续开采过程进行三维数值模拟计算。根据建立的计算模型,评价未来采矿活动对露天坑边坡、坑底及坝体的影响,并对矿山存在的安全隐患提出了对应的防治措施。After the open pit is backfilled,the natural force field of the physical environment of the surrounding rock is changed,causing displacement and deformation of the surrounding rock.In order to discuss the safety and stability of coordinated mining in Axi Gold Mine,the rock physical and mechanical parameters are determined through field investigation,sampling,and testing.The FLAC^(3D)software is used to perform three-dimensional numerical simulation calculations on the stability of the open-pit slope and bottom,open-pit backfilling and subsequent mining processes.According to the established calculation model,the impact of future mining activities on the slope,bottom of the pit and the dam body of the open pit is evaluated,and corresponding prevention and control measures are proposed for the hidden safety hazards in the mine.

关 键 词：露天坑回填 三维数值模拟 协同开采 安全稳定 

分 类 号：TD853[矿业工程—金属矿开采]