综放工作面过上覆集中煤柱应力区支护技术探析

Probing into the Support Technology of Fully Mechanized Top Coal Caving Face Passing the Overlying Concentrated Coal Pillar Pressure Zone

以8102孤岛小煤柱综放工作面为研究背景,针对该工作面受上覆集中煤柱应力影响,巷道变形严重的问题,提出在采煤侧煤帮施工卸压孔、底板开卸载槽、地面水力压裂、巷道顶板补强支护以及单体柱超前支护加固技术和工艺,有效降低强矿压给回采工作面带来的安全风险,实现工作面的安全回采。

Taking 8102 isolated island small pillar fully mechanized top coal caving face as the research background,in view of the problem that this face is greatly affected by the overlying concentrated coal pillar pressure and the roadway deformation is serious,it is proposed to mine in two channels coal side and floor construction pressure relief drilling,ground hydraulic fracturing,roadway roof reinforcement and support,and single column advanced support and reinforcement technology.This technology can effectively reduce the safety risks brought by strong rock pressure to the mining face,realize the safe mining of the working face.