低位钻场穿层预抽技术在突出厚煤层石门揭煤中的应用

Application of Cross Layer Pre-pumping Technology in Low Drilling Field in Uncovering Coal of Shimen in Outburst Thick Coal Seam

为实现1390轨道石门17+18号煤层揭煤段瓦斯抽采达标和煤层消突,采用低位钻场穿层预抽技术,在低位钻场和石门工作面同步施工穿层钻孔预抽煤体瓦斯,提高施工效率和预抽效果,使17+18号煤层短期抽采达标,缩短了揭煤工期,实现了突出厚煤层的安全快速揭煤。

In order to achieve the gas extraction standard and coal seam outburst elimination in the uncovering section of the 1390 track Shimen No.17+18 coal seam,the low drilling site cross layer pre-drainage technology is adopted to drill the coal body gas through the low drilling field and Shimen working face synchronously,so as to improve the construction efficiency and pre-drainage effect,make the short-term extraction of No.17+18 coal seam reach the standard,shorten the coal exposure period,and realize the safe and rapid coal uncovering of the outburst thick coal seam.