薄煤层综采工作面防瓦斯防灭火综合技术

Comprehensive Technology of Gas and Fire Prevention in Fully Mechanized Mining Face in Thin Coal Seam

富康源矿根据薄煤层工作面采空区瓦斯富集区域后移的分布运移规律和覆岩采动裂隙演化规律,根据实际情况,在充分考虑旧巷松动圈的防治自然发火基础上,采取利用上部旧巷作为高位瓦斯抽采巷替代地面瓦斯抽采立井和回顺斜交钻孔、大流量移动泵抽排回风隅角防瓦斯防灭火综合防治技术,在大大降低瓦斯防治成本的基础上,解决薄煤层工作面瓦斯超限的难题。

According to the distribution and migration law of backward movement of gas enrichment area in goaf of thin coal seam working face and the evolution law of mining fracture in overburden, on the basis of fully considering the prevention and control of natural fire in the loose circle of the old roadway, the comprehensive prevention and control technology of gas prevention and fire extinguishing in the return air corner by using the upper old roadway as the high-level gas drainage roadway instead of the ground gas drainage shaft and the return inclined drilling and large flow mobile pump is adopted to solve the problem of gas overrun in the working face of thin coal seam on the basis of greatly reducing the cost of gas prevention and control.