大断面切巷施工支护工艺研究与应用研究

Research and Application of Construction Support Technology for Large Section Cutting Roadway

大断面切巷若采取全断面一次性成巷施工方法,不仅不利于巷道施工速度,而且很难加强顶板及煤壁维护,特别对于三软煤层采用该方法施工切巷,很容易造成顶板大面积垮落现象。西山煤电集团马兰矿在施工28307工作面切巷时,提出半巷掘进施工方法以及错位式架棚顶板支护,保证了大断面切巷安全顺利施工,取得显著成效。

The one-time construction method of roadway in large section lane, is not only not conducive to the construction speed of roadway, making it hard to strengthen coal roof and wall maintenance, especially for three soft coal seam, but it is also easy to cause large area roof caving phenomenon. Malan Mine, Xishan Coal and Electricity Group, in the construction of 28307 working face, put forward the construction method of half lane driving and the support of misplaced roof support, which guarantee the safe and smooth construction of large section cutting lane and achieved notable results.