跨海隧洞水平定向靶区大直径取心勘察技术及应用  

Application Demonstration of Large Diameter Coring Technology in Horizontal Directional Target Area of Cross Sea Tunnel

作　　者：李军 王汇明 李勇[2] 庄生明[2] 樊腊生[2] LI Jun;WANG Huiming;LI Yong;ZHUANG Shengming;FAN Lasheng(Guangdong Hydropower Planning&Design Institute Co.,Ltd.,Guangzhou 510635,China;The Institute of Exploration Technology of CAGS,Chengdu 611734,China)

机构地区：[1]广东省水利电力勘测设计院有限公司,广州510635 [2]中国地质科学院探矿工艺研究所,成都611734

出　　处：《广东水利水电》2023年第3期98-104,共7页Guangdong Water Resources and Hydropower

摘　　要：受限于航道通行管控,珠江三角洲水资源配置工程项目穿越狮子洋主航道段不能布置水上钻探勘察,该段地质勘察首次采用了水平定向靶区大直径取心勘察技术,完钻孔深为936.20 m,间断获取主航道大直径岩心为83.0 m,查清了主航道过海隧洞工程地质情况。该文论述了该类型水利勘察项目的水平定向钻孔设计、设备选型和钻探施工工艺,以及项目实施过程中所碰到的工程实际问题,为深埋隧洞或过江(海)隧洞勘察提供了新的勘察工艺示范。Limited by the channel traffic control,the water resources allocation project of the Pearl River Delta crossing the Shiziyang main channel section cannot be arranged for water surface drilling exploration.For the first time,the horizontal directional target large diameter coring technology was adopted in the geological exploration of this section.The drilling depth was 936.20m,and the large diameter core of 83.0m was obtained intermittently.The engineering geological conditions of the main channel cross sea tunnel were found out.This paper discusses in detail the horizontal directional drilling design,equipment selection and drilling construction technology of this type of water conservancy survey project,as well as the practical problems encountered in the process of project implementation,which provides a new survey technology demonstration for deep buried tunnel or river(SEA)tunnel survey.

关 键 词：水平定向 大直径 取心 勘察方法 

分 类 号：P634.7[天文地球—地质矿产勘探]