沿空留巷施工穿层钻孔抽采保护层瓦斯技术的应用

Gob-side Entry Retaining Construction Wear Layers Borehole Extraction Protective Gas Technology Application

羊东矿8463工作面为4号(野青)煤保护层开采工作面,回采过后,运料巷和皮带巷道均采用沿空留巷技术。该工作面为"Y"型通风方式,在运料巷施工穿层钻孔预抽保护层(大煤)瓦斯,但工作面回采过后,运料巷钻孔随即报废,由于保护层大量涌入采空区的瓦斯无法处理,给通风瓦斯管理造成困难。羊东矿通过探索,运用运料巷沿空留巷施工穿层钻孔抽采保护层瓦斯技术,很好的解决了该地区的通风瓦斯管理难题。

Yangdong Mine 8463 working face was No.4 coal seam protective mining face, material transportation lane and belt roadway all adopted gob-side entry retaining technology after stoping. The working face was “Y” type ventilation, material handling wear layer drilling drainage lane construction covered by protective layer （ large coal ） gas, but after working face stoping, material lane borehole was wasted, due to protective layer gas pouring into goaf cannot be dealt with, which made it difficult for ventilation and gas management. Trough exploration, Yangdong Mine solved the ventilation and gas management problems in this area using the materials transportation lane along the empty left lane construction layer borehole extraction protective gas technology.