矿柱回采对空区稳定性影响分析  

Analysis of the influence of ore column remining on the stability of empty area

作　　者：吴雯萱 刘章冉 WU Wen-xuan;LIU Zhang-ran(Northwest Mining and Metallurgy Research Institute,Baiyin 730900,China;Zijin Mining Construction Co.,Ltd.,Xiamen 361026,China)

机构地区：[1]西北矿冶研究院,甘肃白银730900 [2]紫金矿业建设有限公司,福建厦门361026

出　　处：《世界有色金属》2024年第18期121-123,共3页World Nonferrous Metals

摘　　要：针对矿柱回收后形成的空区是否稳定,是否对周边主要构(建)构物产生影响的问题。本文通过单轴压缩试验、巴西劈裂试验、三轴压缩实验、纵波波速试验确认空区周边岩石性质,并在此基础上通过采用Madis岩土分析软件进行模型建立和网格划分,采用FLAC3D有限元软件进行数值模拟运算,通过计算该区域矿柱回采后空区是否稳定,能够较好的验证了该项目矿柱回采方案可行性。同时,本文中相关模型及计算结果皆可作为相关矿柱回采的理论借鉴。Aiming at the question of whether the empty area formed after the recovery of the ore column is stable and whether it has an impact on the main surrounding structures.In this paper,the rock properties around the empty area were confirmed by uniaxial compression test,Brazilian splitting test,triaxial compression experiment and longitudinal wave velocity test,and on this basis,the model establishment and meshing were established by Madis geotechnical analysis software,and the numerical simulation operation was performed by FLAC3D finite element software to calculate whether the empty area of the ore column in the area was stable after mining,which better verified the feasibility of the mine column recovery scheme of the project.At the same time,the relevant models and calculation results in this paper can be used as a theoretical reference for the recovery of related ore columns.

关 键 词：矿柱回收 空区 稳定性 有限元模型 数值模拟分析 

分 类 号：TD853.391.1[矿业工程—金属矿开采]