破碎顶板小煤柱动压巷道支护技术研究

TSupporting Technology of Small-pillar-side Roadway influenced by Dynamic Pressure under Broken Roof

针对漳村煤矿2105工作面回风巷小煤柱动压巷道,煤岩体比较破碎,巷道围岩应力比较高,顶板容易产生离层破坏,支护非常困难的特点,采用了改进的高预应力长短锚索组合支护系统,具有锚固深度大,预应力水平高等特点,矿压监测表明,显著减小了巷道的变形,能够解决破碎顶板小煤柱动压巷道难题。

In order to solve the supporting difficult problems of small-pillar-side air-return roadway influenced by dynamic pressure in 2105 Mining Face of Zhangchun Colliery which influenced by broken coal and rock, high surrounding rock stress and roof apt to separation, improved combined supporting system of long-and short-anchorage cable with high pre-stress was applied which had the advantage of large anchorage depth and high pre-stress level. Underground pressure monitoring showed that with the system, roadway deformation reduced largely and that it could solve supporting problem.