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.
出处
《矿冶》
CAS
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)
关键词
水平矿柱
开采扰动
数值计算
稳定性分析
horizontal pillar
mining disturbance
numerical calculation
stability analysis
