四老沟矿极近距离煤层掘进巷道支护技术研究

Research on Tunneling Support Technique of Very Near Distance Coal Seam in Silaogou Mine

四老沟矿多年来一直开采煤层和顶板硬度较高的侏罗系煤层。由于14-2#和14-3#煤层之间距离在1~1.2m之间,属极近距离煤层,因此,在采掘过程中巷道围岩及顶板控制是一个非常重要的问题。本文针对位于不同位置的掘进巷道,采取不同的支护形式,有效地控制了顶板下沉量以及两帮移近量,同时减少了后期的维护费用。通过对8301掘进工作面巷道支护技术的研究,为类似工作面积累了经验,有良好的指导性和实践性。

Silaogou Mine has been mined Jurassic coal which has hardness coal and roof.Since the distance between 14-2#and14-3#is 1m^1.2m which was very near distance coal seam.It is important to control the rock and roof.The paper takes different support forms for roadway in different locations.It could control the roof subsidence and sides’ deformation while reducing maintenance costs at a later stage.Also,it could accumulate experience about similar faces.