钻探工程2025，Vol.52Issue(3)：30-36,7.DOI:10.12143/j.ztgc.2025.03.004
定向钻探技术在隧洞超前地质预报中的应用初探
Preliminary probe into application of directional drilling technology in geological forecast of tunnels
摘要
Abstract
It is difficult to achieve a clear understanding during the survey period before deep buried long tunnels construction,which may affect the construction of the project to some extent.The application of directional drilling technology for the geological forecasts before the construction of deep buried long tunnels is propsed,in which the good guiding function and rapid long distance drilling characteristics are utilized to achieve advanced detection of major risks ahead of tunnel excavation,and it can compensate for the shortcomings of conventional long-distance advanced detections.In this paper,different types of drills are used for geological forecast of 7#tunnel in the water diversion project from Yangtze River to Hanjiang River based on different geological conditions and prediction priorities,moreover,the advanced forecast results and the geological conditions revealed by excavation are compared and analyzed.It is thought that the directional drilling application is aiming to detect major disaster bodies in front of the tunnel excavation face in advance,and the goals can be generally achieved combining the drilling characteristics and physical measures.Furthermore,the timeliness of forecast can be improved while drilling without coring.Based on the current technological level,the efficiency of directional drilling is higher than tunnel excavation of blasting and TBM method,which is feasible in the advanced detection of tunnels constructed by blasting or TBM method.关键词
深埋长隧洞/超前地质预报/水平定向钻机/定向钻探技术/引江补汉工程Key words
deep buried long tunnel/geological forecast in advance/horizontal directional drill/directional drilling technology/the water diversion project from Yangtze River to Hanjiang River分类
地质学引用本文复制引用
许琦,叶健,张广厦,贾建红..定向钻探技术在隧洞超前地质预报中的应用初探[J].钻探工程,2025,52(3):30-36,7.基金项目
长江设计集团有限公司科研项目"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）
