雅鲁藏布江深厚砂砾卵石覆盖层钻探工艺

Drilling Technology in Deep Sandy Gravel Overburden Layer at Brahmaputra River

摘要:

为了开展雅鲁藏布江流域综合规划及其水资源开发利用与保护专题研究工作，在雅鲁藏布江干流里龙坝址和本宗坝址共布置了4个200～300 m深的钻孔。主要通过在西藏高寒地区4个深厚覆盖层钻孔的成功实施经验，对西藏高寒地区深厚覆盖层勘探成孔工艺与技术进行研究探讨。

Abstract:

In order to carry out the comprehensive planning in Brahmaputra Basin and monographic study on water resources development and conservation, 4 boreholes with depth of 200～300m were laid out in Lilong dam site and Benzong dam site of Brahmaputra main stream. This paper discusses the exploration and hole-building processes in deep overburden layer of alpine region in Tibet based on the successful experience obtained in the above 4 boreholes drilling.