简析动压式小煤柱支护技术要点

Brief Analysis on the Key Points of Dynamic Pressure Small Coal Pillar Support Technology

针对工作面煤柱较少、煤柱和巷道顶板稳定性差、动压力对煤柱的影响较大等问题,分析了煤柱受力变形机理,提出了钻孔卸压措施,设计了巷道顶板加固支护方案。对采掘过程中的围岩变形进行监测,结果表明,该方案实施后,采掘面围岩变形较小,煤柱稳定性大大提高。

In view of the problems of less coal pillars, poor stability of coal pillars and roadway roof, and great influence of dynamic pressure on coal pillars, the paper analyzes the stress deformation mechanism of coal pillars, puts forward the measures of drilling pressure relief, and designs the reinforcement and support scheme of roadway roof. The deformation of surrounding rock in the process of excavation is monitored. The results show that the deformation of surrounding rock is small and the stability of coal pillar is greatly improved after the implementation of the scheme.