群采空区对主平巷的影响分析及采空区治理方案  

Impact analysis of goaf groups on main drifts and goaf treatment solutions

作　　者：欧志成 彭跃金 杨宁 欧任泽 王辉林 Ou Zhicheng;Peng Yuejin;Yang Ning;Ou Renze;Wang Huilin(West Mining Co.,Ltd.;Changsha Institute of Mining Research Co.,Ltd.;National Engineering Research Center for Metal Mining)

机构地区：[1]西部矿业股份有限公司 [2]长沙矿山研究院有限责任公司 [3]国家金属采矿工程技术研究中心

出　　处：《黄金》2025年第4期8-12,共5页Gold

基　　金：“十四五”国家重点研发计划项目(2022YFC2905102)。

摘　　要：为了解某地下矿山群采空区的存在对二、三中段主平巷的稳定性影响,采用3Dmine软件建模,统计分析采空区现状,并由此建立三维数值模型进行相关计算,分别从群采空区对主平巷的最大、最小主应力,位移及塑性区进行分析。分析结果表明:最大拉应力分别约为0.85 MPa和1.34 MPa,绝大部分区域的沉降位移小于2.0 cm,塑性区呈零星分布,无贯通现象及趋势,发生大范围塑性破坏的可能性较小。根据采空区大小、形态及矿山后续实际回采方案,提出采用崩落法及钢筋混凝土全封闭阻波墙等手段处理采空区,同时建议矿山根据实际情况对应力集中区域进行补强支护,以确保主平巷及回采安全。To investigate the stability impacts of existing goaf groups on the main drifts in Level 2 and Level 3 of an underground mine,this study utilized 3Dmine software modeling to statistically analyze the current state of goafs.A 3D numerical model was subsequently developed for computational simulations,focusing on the maximum/minimum principal stresses,displacement,and plastic zones induced by the goaf groups.Analysis results indicate that the maximum tensile stresses are approximately 0.85MPa and 1.34MPa,with settlement displacements in most areas below 2.0cm.Plastic zones are sporadically distributed without connectivity or coalescence trends,suggesting a low probability of large⁃scale plastic failure.Based on goaf geometries and subsequent mining plans,treatment strategies such as caving methods and fully enclosed reinforced concrete wave⁃blocking walls are proposed.Additionally,reinforcement support measures for stress⁃concentrated zones are recommended to ensure the safety of main drifts and mining operations.

关 键 词：群采空区 数值模拟 稳定性分析 采空区治理 3D建模 崩落法 应力集中 补强支护 

分 类 号：TD325[矿业工程—矿井建设]