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群采空区对主平巷的影响分析及采空区治理方案
- 作者：
欧志成|彭跃金|杨宁|欧任泽|王辉林
- 作者单位：
- 1
基金项目：
- “十四五”国家重点研发计划项目（2022YFC2905102）
详细信息：
- 作者简介：
- 欧志成（1982—），男，高级工程师，从事矿山管理及采矿技术研究工作；E⁃mail:307446504@qq. com
- 通讯作者：
- 彭跃金（1993—），男，工程师，硕士，从事矿山采矿技术研究工作；E⁃mail:1820943728@qq. com
- PDF下载
Impact analysis of goaf groups on main drifts and goaf treatment solutions
- English Author：
Ou Zhicheng¹, Peng Yuejin², ³, Yang Ning², ³, Ou Renze², ³, Wang Huilin¹
- Unit：
- （1. West Mining Co., Ltd.; 2. Changsha Institute of Mining Research Co., Ltd.; 3. National Engineering Research Center for Metal Mining）
- 摘要
- 在线预览
- 参考文献
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。
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
Abstract:
Abstract: To investigate the stability impacts of existing goaf groups on the main drifts in Level 2 and Level 3 of Level 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, displacemen it. and plastic zones induced by the goaf groups. Analysis results indicate that the maxi-mum tensile stresses are approximately 0.85 MPa and 1.34 MPa, with settlement displacements in most areas below 2.0 cm. Plastic zones are sporadically distributed without connectivity or coalescence trends, suggesting a low probabilitv of large-scale plastic failure. Based on goaf geometries and subsequent mining plans, treatment strategies such as caving methods and fullv enclosed reinforced concrete Wave-blocking wals are proposed. Additionallv. reinf orcer ment support measures for stress-concentrated zones are recommended to ensure the safety of main drifts and mining operations.
Keywords:
goaf groups; numerical simulation; stability analysis; goaf treatment; 3D modeling; caving method; stress concentration; reinforcement support
