单一低透松软含水厚煤层瓦斯抽放深孔施工技术

Deep-hole construction technology of gas drainage for single low-pervious and mellow thick coal seams with water

通过对单一低透松软含水厚煤层瓦斯抽放钻孔施工中存在顶钻、卡钻、喷孔等现象的分析,研究并提出了新的施工工艺,进行了现场试验,取得了较为理想的效果。

This paper analyzes the accidents during the constructions for the single low-pervious and mellow thick coal seams with water, such as tool drilling, tool sticking, and nozzle spaying. Then it investigates and promotes the new construction technique, carries on the site experiments and gains the ideal effect.