充填法开采地表移动带内建(构)筑物稳定性模拟研究  

Simulation Research on Stability of Buildings/Structures in Ground SurfaceMovement Zone of Cut-and-fill Mining

作　　者：栾伟杰 李海基 徐厚臻 张超 LUAN Weijie;LI Haiji;XU Houzhen;ZHANG Chao

机构地区：[1]山东黄金矿业(莱州)有限公司焦家金矿,山东烟台261400 [2]北京科技大学土木与资源工程学院,北京100083

出　　处：《中国矿山工程》2022年第5期11-19,共9页China Mine Engineering

基　　金：中央高校基本科研业务费项目(FRF-BD-20-03A)。

摘　　要：为准确分析金属矿充填法开采过程中对地表移动带范围内所存在建(构)筑物的影响范围与程度,应用3D Mine、Rhinoceros、FLAC耦合构建三维数值模型,模拟综合位移、应力和塑性区变形结果,并结合水平变形、曲率变形和倾斜变形等安全性指标,实现地表建(构)筑物的稳定性分析。研究结果表明:矿体开采后采场周围产生以剪切破坏为主塑性破坏区域,但塑性区并未延伸至建(构)筑物周围;合理的开采顺序结束后各建(构)筑物均属于开采扰动区边界外,且各安全性分析指标均小于临界变形允许值。因此认为地下矿体开采不会影响各建(构)筑物的安全性。For accurate scope and level analysis of the impact on existing buildings/structures in the ground surface movement zone during cut-and-fill mining,a three-dimensional numerical model was built by integrating 3 D Mine,Rhinoceros and FLAC.Deformation was simulated by using factors of displacement,stress and plastic zone and stability analysis of surface buildings/structures was conducted combining safety indicators including horizontal strain,curvature and slope.As was indicated by analysis results,plastic failure zone,which was dominated by shear failure,was created around the stope by mining,but it did not reach the surrounding buildings/structures;After mining completion by rational sequence,all buildings/structures remained outside the mining disturbed zone,and all the safety analysis indicators were smaller than the critical deformation allowance.Therefore,it is considered that underground mining will not affect the safety of buildings/structures.

关 键 词：建(构)筑物 充填法 数值模拟 稳定性 安全性 

分 类 号：TD853[矿业工程—金属矿开采]