穿层预抽瓦斯抽采与利用最大化技术

Technology of Pre- extraction Gas Extraction in Layers and Utilization Maximization

通过落实"做钻场、喷注浆、强增透"九字方针和"钻到位、管到底、孔封严、水放通"抽采精细化要求,在底板巷内实施条带穿层钻孔预抽,完全实现消突,取消煤巷局部措施孔施工,提高掘进效率,实现瓦斯抽采与利用最大化。

Through the implementation of ＂ doing the drill field, jet grouting, strong growth through＂ nine - character principle and the fine drainage requirements of ＂drill in right place, the tube in the end, the hole seals fully, water put through＂, pre -extraction of strip perforating layer drilling were carried out in the floor to realizing eliminate sudden fully. The cancel of partial measures hole construction of coal roadway can improve the driving efficiency and achieve maximized gas extraction and utilization.