汕头海湾隧道超大直径泥水盾构针对性设计及不良地质施工技术  

Design of Super-large Diameter Slurry Shield Used in Shantou Bay Tunnel and Construction Countermeasures for Unfavorable Geology

作　　者：王发民 孙振川 张良辉 李凤远 张兵 王国安 WANG Famin;SUN Zhenchuan;ZHANG Lianghui;LI Fengyuan;ZHANG Bing;WANG Guo′an(State Key Laboratory of Shield Machine and Boring Technology,Zhengzhou 450001,Henan,China;China Railway Tunnel Group Co.,Ltd.,Guangzhou 511458,Guangdong,China;Shantou Su′ai Pass Construction Investment and Development Co.,Ltd.,Shantou 515000,Guangdong,China)

机构地区：[1]盾构及掘进技术国家重点实验室,河南郑州450001 [2]中铁隧道局集团有限公司,广东广州511458 [3]汕头市苏埃通道建设投资发展有限公司,广东汕头515000

出　　处：《隧道建设（中英文）》2020年第5期735-746,共12页Tunnel Construction

基　　金：国家863计划;中铁隧道集团科技创新计划(隧研合2017河南省重点研发与推广专项);汕头市苏埃通道工程科研课题(SAKT003)。

摘　　要：为应对海域环境土-岩-孤石复合地层超大直径泥水盾构施工存在的重难点及风险,以汕头海湾隧道为工程依托,对泥水盾构的刀盘刀具、冲刷系统、主驱动等进行针对性设计以提高设备适应性,并在孤石处理、刀具配置、掘进参数、施工管理等方面采取针对性施工方案。通过采取以上措施,实现了降低刀具损坏、控制管片上浮、提高施工效率的效果,保障盾构安全、快速通过了不良地质地层。The tunneling of super-large diameter slurry shield in soil-rock-boulder composite strata in sea area is difficult and risky.Hence,a series of targeted designs are carried out for cutterhead and cutter,brushing system,main drive,etc.of slurry shield used in Shantou Bay Tunnel to improve the equipment adaptability,and a series of targeted treatments are carried out for boulder processing,cutter configuration,tunneling parameter control and construction management.Consequently,the cutterhead wear is reduced,the segement up-floating is control,the construction efficiency is improved,the shield safety is guaranteed,and the section with unfavorable geology is rapidly passed through.

关 键 词：汕头海湾隧道 海域复合地层 超大直径泥水盾构 过海公路隧道 盾构设计 刀具配置 管片上浮 掘进参数 

分 类 号：U45[建筑科学—桥梁与隧道工程]