新疆冲洪积卵砾石地层岩土工程勘察钻探技术发展回顾

Development and discussion of drilling technology for geotechnical engineering investigation of alluvial-proluvial gravel stratum in Xinjiang

摘要:

冲洪积卵砾石层是新疆岩土工程勘察的主要地层，通过对近30年来冲洪积卵砾石层工程钻探的技术总结，对孔底局部反循环取心钻进、取心钻具回转钻进、牙轮钻具全面钻进、潜孔锤全面钻进等几种主要的钻探工艺技术要点进行了总结归纳，并评述了各钻进工艺的优缺点，尤其对市场竞争环境下卵砾石层钻进工艺做出了对比分析，提出了钻探技术发展的方向。

Abstract:

Alluvial-proluvial gravel is the main formation of geotechnical investigation in Xinjiang. With description of alluvial-proluvial gravel drilling technology over the past three-decade, the key technical points of various drilling processes are summarized, and the advantages and disadvantages of the drilling process are reviewed. Particularly, analysis and comparison of gravel drilling processes is conducted in the market competition environment with the development direction of drilling technology put forward.