深井构造异常区小煤柱巷道支护优化研究

Optimization Study on the Supporting Optimization of Small Coal-pillared Roadway in the Abnormal Area of Deep Well

针对深井构造异常区小煤柱巷道应力分布复杂、岩层稳定性差、安全隐患大的特点,以新巨龙矿为背景,以数值模拟及现场实测为手段,提出了"顶板全锚索支护+U型锚索梁加强支护+注浆加固"的支护优化方案。结果表明,该支护方案可有效控制巷道围岩尤其是小煤柱侧的变形,降低回采期间巷道的安全隐患。

In view of the characteristics of complex stress distribution,poor rock stability and large safety hazard in small coal pillar roadway in the abnormal structure area of deep well,by means of numerical simulation and field measurement,the support optimization scheme of"roof full anchor cable support+u-type anchor cable beam reinforced support+grouting reinforcement"is put forward based on the New Dragon Mine.The results show that the support scheme can effectively control the deformation of roadway surrounding rock,especially the side of small coal column,and reduce the hidden danger of roadway during mining.