开采扰动下水平矿柱稳定性数值分析研究  

NUMERICAL ANALYSIS RESEARCH ON HORIZONTAL PILLAR STABILITY UNDER MINING DISTURBANCE

作　　者：董凯程[1] 于世波[1] 崔松[1] 

机构地区：[1]北京矿冶研究总院,北京100160

出　　处：《矿冶》2015年第4期1-4,共4页Mining And Metallurgy

基　　金："十二五"国家科技支撑计划课项目(2012BAB01B01)

摘　　要：采用数值模拟计算的方法分析了某矿山-290 m水平矿柱在开采扰动过程中的力学效应显现规律。研究结果表明,上部中段采场胶结充填及硐室开挖后,应力向水平矿柱转移;下部中段开采后,水平矿柱整体处于高度应力集中状态,大部分区域都能从开采过程中的拉剪破坏恢复到弹性工作状态。综合分析结果表明,水平矿柱在开采扰动过程中整体稳定性良好。The stability of the - 290 m level isolation pillar during the process of mining is analyzed by the method of numerical simulation. The results show that after the stope is cement-filled and the upper chamber exca- vated, the stress transfers to the isolated pillar; After the mining of lower stopes, the isolated pillar is in a state of high stress concentration, most of the region of the pillar will recover from a tensile shear failure state to the elastic state in the process of mining. Comprehensive analysis shows that the horizontal pillar is stable in the process of mining disturbance.

关 键 词：水平矿柱 开采扰动 数值计算 稳定性分析 

分 类 号：TD853.322[矿业工程—金属矿开采]