三交一号矿井瓦斯抽采钻孔支护封孔研究

Research on SANJIAO No.1 mine well gas drainage drilling hole on the book jacket

本文通过研究三交一号矿井4#煤层瓦斯抽采钻孔的各种参数和力学性能,得出了钻孔主动支护力与钻孔塑性变形区曲线关系。通过钻孔带压封孔保证了抽采钻孔周围的力学稳定,为煤层瓦斯预抽奠定了理论基础。

By studying the three post No. 1 Mine coal No. 4 seam gas drainage drilling and mechanical properties of the various parameters, study drew active support drilling force and drilling plastic deformation zone curvilinear relationship. By drilling with pressure sealing ensures Borehole stability around the mechanics for the coal seam gas pre -pumping has laid a theoretical foundation.