松软煤层风力钻进工艺

Air Drilling Technology in Soft Coal Seam

摘要:

松软煤层在我国分布很广，采用风力钻进工艺，从钻探技术装备和瓦斯地质钻探工艺上，形成了较为完整的体系，通过风力钻进工艺在多家煤矿的应用，在钻深、孔径和钻孔保存维持较长抽采时间上取得了良好的技术成果。

Abstract:

The soft seams are distributed widely in China; the drilling equipment and gas geological drilling have formed a relatively complete system with air drilling technology. By the application of air drilling in many coal mines, good technical effects have been achieved in drilling depth and hole diameter and a longer gas extraction time of a borehole.