象山矿切顶卸压沿空留巷技术研究

Study on Gob-entry Retaining Technology with Pressure Relief by Roof Cutting in Xiangshan Mine

以象山矿21308工作面为研究背景,进行切顶卸压沿空留巷技术研究。应用爆破预裂切缝、锚索支护等方法设计施工。经监测,巷道变形较原留巷方式效果好,顶、底板移近量小。

Taking 21308 working face of Xiangshan coal mine as the research background, the gob side entry retaining technique with roof cutting and unloading is studied. The design and construction of blasting pre splitting joint and anchor cable support are adopted. After monitoring, the deformation of roadway is better than that of original retaining way, and the top and bottom move less.