区段煤柱合理宽度的数值模拟研究

Study on Numerical Simulation of Reasonable Width of Section Coal Pillar

通过分析,应力降低区的区间为6 m以内的煤柱,因此煤柱宽度6 m的巷道,支护载荷相对较小,有利于巷道维护。通过不同煤柱宽度的巷道围岩变形分析,煤柱宽度为6 m时,两帮变形量最小,煤柱自身稳定性好,有利于控制煤柱变形。综合以上模拟分析,煤柱合理宽度为6 m。

Through the above analysis,the stress reduction zone is within 6 m of the coal pillar,so the supporting load of the roadway with 6 m of coal pillar width is relatively small,which is conducive to roadway maintenance.Through the analysis of surrounding rock deformation of roadway with different pillar width,when the pillar width is 6 m,the deformation of two sides is the smallest,and the stability of the pillar itself is good,which is conducive to controlling the deformation of the pillar.Based on the above simulation analysis,the reasonable width of coal pillar is 6 m.