钻探工程2025，Vol.52Issue(3)：22-29,8.DOI:10.12143/j.ztgc.2025.03.003
定向钻探技术在水利水电深埋隧洞勘察中的应用研究
Application research of directional drilling technology for deep buried tunnel engineering investigation:Taking the water diversion project from the Yangtze River to the Hanjiang River as an example
摘要
Abstract
Drilling is the most direct and effective investigation method for tunnel engineering,however,for deep-buried long tunnels,traditional vertical boreholes have limitations such as less effective footage,significant challenges in equipment relocation,etc.Directional drilling technology offers a solution by allowing off-site borehole placement(e.g.,along mountainsides or valleys)and controlled drilling trajectories to investigate the geological conditions of the tunnel structure,demonstrating high economic efficiency.A branch-type directional exploration hole was successfully implemented in the water diversion project from Yangtze River to Hanjiang River.The main hole reached a depth of 630.8m,with a branch hole extending 81m,a total of 158 coring runs were conducted,recovering 166.3m of rock core,achieving a 95%core recovery rate in the target zones.Additionally,acoustic wave logging,borehole imaging,and hydrogeological tests were performed.This project established a comprehensive investigation method integrating directional drilling and in-hole testing for hydropower and water conservancy engineering.It provides a new approach for deep-buried tunnel exploration and serves as a valuable reference for applying directional drilling technology in similar projects.关键词
深埋长隧洞/定向钻探技术/分支孔/孔内综合测试/水利水电工程/工程勘察/引江补汉工程Key words
deep-buried long tunnel/directional drilling technology/branch-type hole/in-borehole integration testing/hydropower and water conservancy engineering/engineering investigation/the water diversion project from Yangtze River to Hanjiang River分类
地质学引用本文复制引用
颜慧明,项洋,齐凌轩,常威,左勇哲..定向钻探技术在水利水电深埋隧洞勘察中的应用研究[J].钻探工程,2025,52(3):22-29,8.基金项目
国家大坝安全工程技术研究中心科研项目"超深定向钻高压灌浆与超前勘探关键技术研究"(编号:CX2023Z01-5) （编号:CX2023Z01-5）
水利部水网工程与调度重点实验室科研项目"复杂地质条件下水工深埋长隧洞涌水突泥防治关键技术研究"(编号:CX2023Z02-1) （编号:CX2023Z02-1）
