跨海峡隧道风化槽围岩衬砌防排水技术研究  

WATERPROOF AND DRAINAGE TECHNOLOGIES FOR LINING OF SUBSEA TUNNEL IN WEATHERED TROUGH

作　　者：郭小红[1,2] 陈卫忠[3,4] 曹俊杰[4] 梁巍[2] 于洪丹[4] 

机构地区：[1]北京交通大学隧道及地下工程教育部工程研究中心,北京100044 [2]中交第二公路勘察设计研究院有限公司,湖北武汉430056 [3]山东大学岩土与结构工程研究中心,山东济南250061 [4]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071

出　　处：《岩石力学与工程学报》2010年第7期1481-1488,共8页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金重大项目(50720135906);国家自然科学基金面上项目(40772184);国家重点基础研究发展规划(973)项目(2009CB724603);交通运输部行业科技攻关项目资助

摘　　要：采用钻爆法修建海底隧道必须采取有效措施预防塌方、涌水、突泥等地质灾害,海底隧道钻爆法施工时如何安全穿越断层破碎带是工程设计与施工的技术难点。结合厦门跨海峡隧道围岩的特点,研究钻爆法穿越断层破碎带的注浆加固、防排水技术,提出不同围岩条件下的隧道防排水和注浆设计方案。并根据实验室三轴试验结果得到强风化花岗岩渗透系数以及反演的围岩力学参数,分析风化槽隧道衬砌的外水压力分布特点和量值。研究成果为衬砌结构设计以及国内同类型隧道的衬砌防排水和衬砌支护技术设计提供可靠指导。Effective measures should be adopted to avoid geologic hazard such as collapse,water gushing and debris flow,when the drill and blast method is used to construct subsea tunnel.In the drill and blast method,the technical difficulty for engineering design and construction is how to ensure the safety of project when the tunnel passes through the fault zone.Combined with the characteristics of surrounding rock in Xiamen subsea tunnel,the grouting reinforcement,waterproof and drainage techniques are studied;and the related design schemes are proposed for tunnel passing through the fault zone with drill and blast method.According to the laboratory triaxial test results,the permeability of highly weathered granite is obtained.And the mechanical parameters of surrounding rock are obtained by back analysis.The distribution of external water pressure on lining of tunnel in weathered trough is obtained by numerical simulation.The achievements obtained in the research will benefit other subsea tunnels in practical engineering.

关 键 词：隧道工程 海底隧道 风化槽 衬砌 外水压力 数值仿真 

分 类 号：U45[建筑科学—桥梁与隧道工程]