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济阳煤矿为了使2709N工作面回采时的材料巷得以保留下来作为2710N工作面开采时的材料巷,采用粉碎的煤矸石、粉煤灰和胶结料按一定比例配制的膏体材料对2709N工作面材料巷一侧的采空区进行充填形成巷旁支护体,巷旁支护体宽度为9 m。留巷后巷道稳定,满足使用要求,不仅减少了巷道掘进量,而且消耗了大量煤矸石并多回收资源6 226.5 t,取得了重大的经济价值。
Jiyang coal mine in order to make 2709N face back to the material when the road to be retained as 2710N mining face when the work of the roadway, the use of crushed coal gangue, fly ash and cementing materials prepared according to a certain proportion of the 2709N face The gob of the side of the roadway is filled with lane-side supports, and the width of roadside supports is 9 m. The roadway remained after the roadway was kept stable, meeting the requirements of use. It not only reduced the amount of roadway excavation, but also consumed a large amount of coal gangue and recycled more than 6 226.5 tons of resources, thus achieving significant economic value.