综放工作面小煤柱沿空掘巷支护技术研究

Study on Support Technology of Small Coal Pillar Gob-side Entry Driving in Fully Mechanized Caving Face

为研究综放工作面小煤柱沿空掘巷支护技术,以铺龙湾煤矿5106工作面回风巷的小煤柱沿空掘巷为研究对象,通过研究护巷煤柱应力分布规律及变形情况,提出了“锚杆+短锚索+W钢带+锚网”“锚杆+H钢带+锚网+喷浆”“锚杆+H钢带+锚网”的不同联合支护方案。该方案对5106工作面沿空巷道变形有较好的控制作用,创造较大的效益。

In order to study the support technology of small coal pillar gob-side entry driving in the fully mechanized caving face,taking the small coal pillar gob-side entry driving in the return air roadway of the 5106 working face of Pulongwan Coal Mine as the research object,by studying the stress distribution law and deformation condition of the roadway protection coal pillar,different joint support schemes of"anchor rod+short anchor cable+W steel belt+anchor mesh","anchor rod+H steel belt+anchor mesh+shotcrete",and"anchor+H steel belt+anchor mesh"are proposed.This scheme has a good control effect on the deformation of gob-side roadway in the 5106 working face,and creates greater benefits.