鑫源煤矿开采参数的数值模拟研究

Numerical Simulation Study on Mining Parameters of Xinyuan Coal Mine

为避免采空区煤柱发生大面积垮塌,采用数值模拟的方法通过对比不同模型塑性区发育结果及最大主应力分布规律研究合理的煤柱留设宽度。研究结果表明:鑫源煤矿原采用每开采12 m留设8 m煤柱的开采方案煤柱内部无弹性核区无法维持自身稳定,推荐采用每开采12 m留设11 m煤柱的开采方案。

In order to avoid large area of collapse pillars in the goaf,by using numencai simulation method ,by comparing the different models of development of plastic zone and the maximum principal stress distribution, study the reasonable coal pillar reserve width. The results show that the per mining 12 m set 8 m coal pillar mining method in Xinyuan coal mine no internal elastic zone in coal pillar to maintain its stability,recommend the use of each strip remaining 11 m mining 12 m coal pillar mining scheme.