基于FLAC^(3D)的临时矿壁稳定性分析与参数优化  

Stability Analysis and Parameter Optimization of Temporary Ore Wall Based on FLAC^(3D)

作　　者：徐恒[1,2] 王贻明[1,2] 玛旦江 程海勇[1,2] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]金属矿山高效开采与安全教育部重点实验室,北京100083

出　　处：《矿业研究与开发》2015年第9期8-13,共6页Mining Research and Development

基　　金："十二五"国家科技支撑计划项目(2012BAB08B02)

摘　　要：针对阶段无间柱连续开采快速充填采矿法临时矿壁的稳定问题,基于FLAC3D,对采区中所留的临时矿壁稳定性进行三维数值分析,模拟临时矿壁厚度分别为6,5.5,5,4.5,4m时模型的最大主应力、最小主应力、垂直位移及塑性区大小,分析矿壁厚度与采场稳定性的关系。数值模拟结果表明:矿山临时矿壁厚度取5~6m是合理的,模拟结果与现场试验结果相符合,表明数值模拟结果可以对设计起到指导作用,将FLAC3D数值模拟应用于矿壁设计及稳定性分析是可行的。Aiming at the stability problems of temporary ore wall in the stage non-pillar continuous rapid filling method, the three-dimensional numerical simulation on stability of temporary ore wall left in stope was carried out based on FLAC^3D. When the temporary ore wall thickness respectively was 6, 5.5, 5, 4.5 m and 4 m, the maximum principal stress, minimum principal stress, vertical displacement and plastic zone size of the models were simulated to analyze the relationship between wall thickness and stope stability. The results showed that the wall thickness of 5～6 m was reasonable, which was accord with the field test results. It indicated that the numerical simulation results can be instructive for design, and the FLAC^3D numerical simulation was feasi ble for the design and stability analysis of ore wall.

关 键 词：FLAC^3D 临时矿壁 数值模拟 稳定性分析 

分 类 号：TD853.34[矿业工程—金属矿开采]