硬岩地层长距离过海地铁区间施工工法分析

Construction Method Analysis of Long Subway Subsea Tunnel in Hard Rock Stratum

以青岛地铁1号线过海区间为工程背景,采用地质分析、工程类比和综合比选的方法,分析硬岩地层长距离过海地铁区间的施工方法。研究表明,适合硬岩地层过海地铁区间隧道的工法包括钻爆法和TBM工法,结合工程和水文地质条件,从断面、地层、不良地质安全风险、工期和投资等方面进行加权综合比选。青岛地铁1号线过海区间适合采用钻爆法单洞双线方案。

On the background of Qingdao line No. 1 subsea tunnel,construction method selection of long subway subsea tunnel are analyzed by geological analysis, engineering analogy and comprehensive comparison. It is concluded that drill blasting method and TBM method are suitable for hard rock,construction method should be chosen from the aspects of section,stratum,unfavorable geology security risk,conbined with engineering and hydrogeological conditions,construction period and cost analysis.Qingdao line No. 1 subsea tunnel is suitable for drilling and blasting method with single hole double line program.