海底岩溶盾构隧道勘察、设计及岩溶处理关键技术研究——以大连地铁5号线火梭区间海底隧道为例  

Key Technologies for Investigation,Design and Treatment of Submarine Karst Shield Tunnel:a Case Study of Railway Station-Suoyu Station Submarine Tunnel on Dalian Metro Line 5

作　　者：周华贵 何一韬 ZHOU Huagui;HE Yitao(China Railway Liuyuan Group Co.,Ltd.,Tianjin 300308,China;CCCC Rail Transit Consultants Co.,Ltd.,Wuhan 430056,Hubei,China)

机构地区：[1]中铁第六勘察设计院集团有限公司,天津300308 [2]中交城市轨道交通设计研究院有限公司,湖北武汉430056

出　　处：《隧道建设（中英文）》2018年第11期1830-1835,共6页Tunnel Construction

摘　　要：海底岩溶隧道勘察、设计难度大,施工风险高。以大连市地铁5号线海底岩溶大直径盾构隧道为研究对象,首次采用"跨孔CT物探+钻探"的海底隧道岩溶勘察方案,通过有限元计算确定海底岩溶隧道加固范围,通过抗浮计算确定岩溶隧道基底加固标准,提出海底岩溶的海面预处理具体实施方案和盾构针对性设计方案,从而形成一整套海底岩溶盾构隧道勘察、设计及岩溶处理方案。The exploration and design of tunnel in the submarine karst area are difficult and the construction risk is high.Hence,the cross-hole CT geophysical prospecting+drilling method is adopted for the first time in large-diameter submarine karst shield tunnel on Dalian Metro Line 5.And then the reinforcement range of the tunnel is determined by finite element method;the reinforcement standard of karst tunnel foundation is determined by anti-floating calculation;and a specific implementation scheme of submarine karst pretreatment and the specific design scheme of shield construction are put forward.In this way,a whole set of exploration,design and treatment scheme of submarine karst shield tunnel is formed.

关 键 词：海底隧道 盾构隧道 岩溶 岩溶勘察 岩溶处理 盾构设计 跨孔CT物探+钻探 

分 类 号：U452[建筑科学—桥梁与隧道工程]