为了解决松软低透气性煤层顺层钻孔塌孔难题,义马煤业集团在新安矿区突出矿井采掘工作面进行了顺层钻孔全程下筛管高效抽采瓦斯技术试验。通过对比全程下筛管本煤层顺层钻孔和未全程下筛管本煤层顺层钻孔的抽采浓度、抽采纯量数据,采用全程下筛管技术的单孔瓦斯抽采浓度和瓦斯抽采纯量比对比孔提高1倍以上,实现了“钻孔到位、筛管到底、抽采效果最优”的目标,确保了矿井安全高效生产。 In order to solve the problem of collapse and hole collapse of soft, low permeability coal seam, the Yima Coal Group carried out the gas drainage technology experiment of high-efficiency gas drainage through the entire borehole in the Xin’an mining area with prominent coal mining face. By comparing the pumping depth of coal seams along the entire coal seam under the sieve and the vertical drilling depth of the coal seam under the unscreened coal seam in the whole process, the pure gas data are extracted and the single-hole gas drainage concentration and gas Compared with the control hole, the pumping capacity is increased by more than 1 time, achieving the goal of “drilling in place, sieving pipe in the end and optimal drainage”, ensuring safe and efficient mine production.