白象山铁矿采场结构参数的数值模拟优化  

Optimization of the Stope Structure Parameters of BaiXiangShan Iron Mine by Numerical Simulation

作　　者：黄刚[1,2] 蔡嗣经[1,2] 张亚东[1,2] 杨威[1,2] 陈轲[3] 刘发平[3] 

机构地区：[1]北京科技大学教育部金属矿山高效开采与安全重点实验室,北京100083 [2]北京科技大学土木与环境工程学院,北京100083 [3]马钢(集团)控股有限公司姑山矿业公司,安徽马鞍山市243100

出　　处：《矿业研究与开发》2014年第4期8-10,共3页Mining Research and Development

基　　金：国家自然科学基金项目(51074018)

摘　　要：白象山铁矿的水文地质条件复杂,采用分层进路充填法开采。利用FLAC3D模拟软件建立流固耦合模型,分析了采场跨度、进路宽度、分层高度和充填体类型对采场顶板稳定性的影响。对模拟结果的极差分析表明,采场跨度对采场顶板的最大沉降量、最大拉应力和塑性区破坏高度起决定性作用,其次是充填体类型、分层高度和进路宽度;最优方案为采场跨度30m,进路宽度10m,分层高度10m,用灰砂比1∶8的胶结尾砂进行充填。With complicated hydrogeological condition,Baixiangshan iron mine adopted the cut and fill stoping method.By FLAC^3D simulate software,a fluid-solid coupling model was established to analyze the effect of the stope span,tennel width,slice height and filling type on the stability of stope＇s roof.The range analysis of simulation results showed that the stope span played the deceive role on the stope roof＇s maximum settlement,maximum tensile stress and the destructive height of plastic area.The subsequent influencing factors included the fill type of material,tennel width and slice height.The optimistic scheme would be obtained when the stope span was 30 meters,tennel width and the slice height were 10 meters,and the cemented-sand ratio of tailings backfill was 1∶8.

关 键 词：采场结构参数 数值模拟 极差分析 采场跨度 塑性破坏 

分 类 号：TD853.343[矿业工程—金属矿开采]