复杂地层中大口径钻孔的施工方法

Drilling technology of the large drill hole in complex strata

本文主要探讨了大口径钻孔施工方法及其特点,并结合各类地层的特点,指出因地层条件的不同应选用相适应的施工方法。文中还阐述了几种地层成孔过程中应注意的问题。

The paper focuses on drilling technology and characteristics of the large drill hole in complex strata. On the basis of the geologic conditions, we should use suitable drilling technology; meanwhile, the paper suggests some problems needing attention in drill hole completion technology in different strata.