兰渝铁路深孔钻探沉渣处理

Sediment Treatment for Deep Hole Drilling in Lanzhou-Chongqing Railway

摘要:

孔内沉渣厚时会造成下钻不到底或埋钻事故，严重影响钻探的正常进行。介绍了兰渝铁路工程地质勘察孔深850 m的西秦岭3号孔沉渣处理过程，总结出一些在破碎地层沉渣事故处理的经验和措施,为类似事故提供借鉴。

Abstract:

Thick in-hole sediment affects drilling operation with drilling tool not going down to the hole bottom or drill bury. The paper introduced sediment treatment in the 3# hole of west Qingling with depth of 850m in engineering geological exploration of Lanzhou-Chongqing railway, and summed up some treatment experience and measures in treatment of sediment in broken formation for the similar drilling failure.