3502上分层复采面巷道布置与支护设计

Roadway Layout and Support Design of the 3502 Upper Slicing Face

为回收西冯街煤业优质煤炭资源、提高矿井服务年限,采用复采方式回收3^(#)煤层,规划了3502上分层回风顺槽掘进方案,分区域设计了巷道断面和支护参数。现场应用监测结果表明,受采空区和空巷影响区域巷道变形较大,其中采空区影响区域变形相对剧烈,巷道顶底和两帮平均变形分别为276 mm、196 mm,整体看巷道变形在可控范围内。

In order to recover the high-quality coal resources of Xifengjie Coal Industry and improve the service life of the mine,the method of re mining is adopted to recover the 3#coal seam,the tunneling scheme of the 3502 upper layered return air chute is planned,and the roadway section and support parameters are designed by regions.The field application monitoring results show that the roadway deformation in the area affected by goaf and abandoned workings is relatively large,and the deformation in the area affected by goaf is relatively severe.The average deformation of roadway top and bottom and two sides are 276 mm and 196 mm respectively,and the overall deformation of roadway is within the controllable range.