抽放瓦斯顺煤层长钻孔施工技术Drilling technology of long hole using for discharging gas from coal seams
郝世俊,石智军,孙荣军,刘卫东
HAO Shi-jun;SHI Zhi-jun;SUN Rong-jun;LIU Wei-dong (Xi'an Branch;
摘要(Abstract):
介绍了抽放瓦斯顺煤层长钻孔试验情况。在试验中使用定向钻进技术施工了3个钻孔,有1个试验孔深度达509.03m,是目前国内最深的全煤层长钻孔,平均纯钻进时效24.4m/h。这些抽放孔的瓦斯涌出量均达到2.0~2.5m~3/min。
It is introduced that the test of long drilling hole using for discharging gas from coal seams. Executed 3 hole using directional drilling technology,one drilling hole depth is up to 509.03 m,which is the longest drilling hole in coal seams,average sheet drilling speed is up to 24.4 m/h.Discharge of all these hole is up to 2.0-2.5 m3/min.
关键词(KeyWords):
抽放瓦斯;顺煤层长钻孔;定向钻进
discharging gas;long drilling hole in coal seam; directional drilling
基金项目(Foundation):
作者(Authors):
郝世俊,石智军,孙荣军,刘卫东
HAO Shi-jun;SHI Zhi-jun;SUN Rong-jun;LIU Wei-dong (Xi'an Branch;
参考文献(References):
文章评论(Comment):
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