超长距离水平定向钻进技术在隧道精准地质勘察的研究及应用  

Tunnel Accurate Geological Investigation Using Long-Distance Horizontal Directional Drilling Technology

作　　者：马保松 程勇[4] 刘继国[4] 朱冬林[4] 闫雪峰 赵强 MA Baosong;CHENG Yong;LIU Jiguo;ZHU Donglin;YAN Xuefeng;ZHAO Qiang(School of Civil Engineering,Sun Yat-sen University,Zhuhai 519082,Guangdong,China;Guangdong Research Center for Underground Space Exploitation Technology,Guangzhou 510275,Guangdong,China;Southern Marine Science and Engineering Guangdong Laboratory,Zhuhai 519080,Guangdong,China;CCCC Second Highway Consultant Co.,Ltd.,Wuhan 430056,Hubei,China;Faculty of Engineering,China University of Geosciences,Wuhan 430074,Hubei,China)

机构地区：[1]中山大学土木工程学院,广东珠海519082 [2]广东省地下空间开发工程技术研究中心,广东广州510275 [3]南方海洋科学与工程广东省实验室,广东珠海519080 [4]中交第二公路勘察设计研究院有限公司,湖北武汉430056 [5]中国地质大学(武汉)工程学院,湖北武汉430074

出　　处：《隧道建设（中英文）》2021年第6期972-978,共7页Tunnel Construction

摘　　要：为弥补传统钻探勘察方法存在的不足,更加精确地对隧道围岩信息及岩体应力分布特征进行探测,提出将非开挖管道建设的水平定向钻进技术(HDD,horizontal directional drilling)用于隧道地质勘察的新方法,并给出采用HDD进行隧道地质勘察的详细技术方案,即先沿着隧道设计轴线钻1个水平定向钻勘察孔,并在孔内开展间断取心、水压致裂、综合测井和孔内电视等相关测试,利用测试结果对隧道设计轴线围岩的岩性变化、断裂破碎带分布范围以及隧道涌水情况进行精确判断。最后,将HDD用于天山胜利隧道地质勘察工程实例中,并在钻进长度为2271 m的水平定向钻勘察孔内开展了取心、孔内电视等相关测试,验证了HDD用于隧道地质勘察的可行性及高效性。The horizontal directional drilling(HDD)method used in trenchless pipe excavation is employed in tunnel geological survey to overcome the shortcomings of traditional drilling survey methods and more accurately derive information and stress distribution characteristics of the rock mass from tunnel surrounding.Detailed technical solution derived from the HDD method can be summarized as follows:After boring a HDD survey hole along the tunnel′s design axis,intermittent coring and tests,such as hydraulic fracturing,comprehensive logging,and downhole television are performed,and the test results are used to accurately identify the lithological variation of surrounding rock along the tunnel′s design axis,the distribution range of fracture zone,and the water inrush condition in the tunnel.Furthermore,the HDD method is used to investigate the geology of the Tianshan Shengli tunnel.Finally,coring and borehole-downhole television are conducted in a 2271 m-long HDD survey hole.The results confirm the feasibility and efficiency of employing HDD technology in tunnel geological surveys.

关 键 词：隧道 地质勘察 水平定向钻进技术 高清钻孔电视 

分 类 号：U45[建筑科学—桥梁与隧道工程]