突出煤层群开采层序论证及三区联动瓦斯抽采技术

针对福泉煤矿山区低透气性突出煤层群开采瓦斯治理难度大,通过煤与瓦斯赋存情况、保护层保护范围及保护层开采技术条件综合论证煤层群开采层序,基于开采保护层为出发点,研究了"开拓区、准备区、回采区"三区联动瓦斯抽采技术体系:底抽巷超前抽采和保护层开采卸压联动瓦斯抽采、本煤层和邻近层卸压联动定向长距离钻孔抽采、一巷三用三维立体瓦斯抽采等技术,实现矿区瓦斯三区联动抽采,促进矿井年抽采量逐年提升,从时间和空间上提前解决了福泉煤矿突出防治及瓦斯涌出治理问题,促成了该矿抽、掘、采合理部署的良性循环。

Demonstration of Mining Sequence of Outburst Coal Seam Group and Technology of Three-zone Combined Gas Drainage

In view of the low gas permeability and prominent coal seam group mining in Fuquan mine,it is difficult to control gas. Based on the occurrence of coal and gas, the protection range of the protective layer, and the technical conditions of the protective layer mining, the coal mining group mining sequence is comprehensively demonstrated. Based on the mining protective layer as the starting point, research The "three development zones," preparation zone, and "recovery zone" "combined gas drainage technology system: advanced drainage of bottom drainage lanes and protection layer mining,pressure relief, gas drainage, pressure relief, and long-distance drilling of coal seams and adjacent layers. Drainage, three-dimensional three-dimensional gas drainage in one lane, and three-dimensional gas drainage in the mine area to realize the joint extraction of gas in the three areas of the mining area,to promote the annual drainage of the mine to increase year by year, in terms of time and space, the advancement of Fuquan coal mine′s prominent prevention and control of gas emission has been solved.The problem has contributed to a virtuous cycle of reasonable deployment of pumping, excavation and mining of the mine.