东江水下钻爆隧道探水及治水工艺  

Water detection and control technologies applied in Dongjiang underwater drilling and blasting tunnel

作　　者：王民[1] 赫飚[1] 宋小晖[1] 

机构地区：[1]中国石油天然气管道局国内事业部,河北廊坊065000

出　　处：《油气储运》2015年第8期892-895,共4页Oil & Gas Storage and Transportation

摘　　要：东江钻爆隧道穿越是西气东输二线东段广深支干线的控制性工程,其采用水下钻爆的方式施工,施工中的探水、防水和治水关系到施工安全及工程成败。根据工程特点,采用了深孔超前探测、超前短探、深孔高压帷幕注浆、定点注浆、短孔定点注浆等方法,将水堵截在隧道开挖轮廓线之外,使出水量在可控范围之内。通过预注浆围岩固结、短掘短支和联合支护等措施,防止了大规模坍塌冒顶,保证了隧道的安全、顺利贯通。东江钻爆隧道工程的探水及治水工艺可为今后类似工程提供借鉴。Dongjiang drilling and blasting tunnel crossing Guangzhou-Shenzhen branch at east section of the 2nd Westto-East Gas Pipeline is a controlling project. Underwater drilling and blasting method is adopted in this project, so water detection, prevention and control during the construction are essential for the safety and success of the project. Based on its characteristics, a series of methods are adopted in Dongjiang tunnel project, including long-hole advanced detection, shorthole advanced detection, long-hole high pressure curtain grouting, fi xed point grouting, and short-hole fi xed point grouting. In this way, the water is intercepted outside tunnel excavation borderline and water production is kept in controllable range. Large-scale collapse and roof falling are prevented by means of pre-grouting surrounding rock consolidation, short-distance excavating and supporting and combined support. Therefore, the tunnel is put into operation smoothly. It provides rich experience and reference for similar projects.

关 键 词：西二线东段 钻爆隧道 探水 治水 

分 类 号：TE973[石油与天然气工程—石油机械设备]