基于地压监测及数值模拟对某钨矿采空区稳定性分析  

Stability Analysis of a Tungsten Mine Goaf Based on Ground Pressure Monitoring and Numerical Simulation

作　　者：郁富林 肖国喜 徐锋 YU Fulin;XIAO Guoxi;XU Feng(Jiangxi HuKeng Tungsten Industry Co.,Ltd.,Ji'an 343205,Jiangxi,China;Jiangxi Guotai Wuzhou Blasting Engineering Co.,Ltd.,Nanchang 330096,Jiangxi,China;Jiangxi Blasting Engineering Technology Research Center,Nanchang 330012,Jiangxi,China)

机构地区：[1]江西浒坑钨业有限公司,江西吉安343205 [2]江西国泰五洲爆破工程有限公司,江西南昌330096 [3]江西省爆破工程技术研究中心,江西南昌330012

出　　处：《中国钨业》2021年第4期38-44,共7页China Tungsten Industry

摘　　要：江西某钨矿由于历史开采原因,140 m中段开采结束后遗留了大量的采空区及部分低品位矿体。为掌握该中段采空区稳定性情况以指导对该部分钨资源进行安全回收,本研究采用地压监测和FLAC3D软件数值模拟方法,研究了该中段采空区及其邻近岩体塑性区、最大主应力、竖直方向位移等特征,并结合现场地压监测分析得到了采空区关键承载点与稳定性状态。研究表明:通过现场地压监测与数值模拟,140 m中段采空区及其邻近岩体次生应力总体处于平衡状态。该研究结论可指导矿山进行地压控制和低品位钨资源综合回收。Due to historical mining reasons,a large number of mined-out areas and some low-grade ore bodies were left in the middle section of 140 m in Jiangxi tungsten mine.In order to grasp the stability of mined-out areas in the middle section and guide the safe recovery of this part of tungsten resources,the ground pressure monitoring and numerical simulation method of FLAC3D software were used to study the characteristics of the goaf in the middle section and its adjacent rock mass,such as plastic zone,maximum principal stress,vertical displacement,etc.,and the key bearing points and stability state of the goaf were obtained by combining with on-site ground pressure monitoring and analysis.The research shows that the secondary stress of the mined-out area in the middle section of 140 m and its adjacent rock mass is generally in a balanced state through on-site ground pressure monitoring and numerical simulation.The research conclusion can guide the ground pressure control and comprehensive recovery of low-grade tungsten resources in mines.

关 键 词：地压监测 数值模拟 采空区 稳定性 

分 类 号：TD864[矿业工程—金属矿开采]