复合型灾害矿井特厚煤层工作面注水效果分析

Analysis on Working Face Water Infusion of Extremely Thick Coal Seam in Compound Disaster Mines

千秋煤矿21141工作面是典型的特厚煤层综放工作面,该工作面存在严重的冲击危险性,并且煤层极易自燃。介绍特厚煤层条件下采用的双向长钻孔注水法、煤壁浅孔注水法、两巷钻场注水法、顶板高位钻场注水法和防火工程静压注水法,并根据现场实测,煤层注水对冲击地压防治、降尘、防灭火、瓦斯抽放等灾害起到了综合防治作用,实现了"一措多用"的目的。

The Qianqiu coal mine 21141 working face is typical extremely thick coal seam fully mechanized caving face with serious rock burst risk and easy spontaneous combustion coal seam.The paper introduces the methods including two-way long-drilling water injection method,coal wall shallow hole water injection method,two-roadway drilling filed water injection method,roof high level drilling field water injection method and fire prevention engineering hydrostatic water injection method.The coal seam water injection plays comprehensive preventive and control effects in rock burst prevention,dust,fire prevention and extinguishing,gas drainage and other disasters according to the field measurement,which achieves the goal of ＂multi-application of a measure＂.