超大直径盾构在海域软土地层掘进推进系统参数控制方法研究——以汕头海湾隧道工程为例  

Parameters Control Method for Thrust System of Super-large Diameter Shield Boring in Soft Soil Layer of Sea Area: a Case Study of Shantou Bay Tunnel Project

作　　者：陈桥 孙振川 张兵 王超峰 杨将晓 王发民 CHEN Qiao;SUN Zhenchuan;ZHANG Bing;WANG Chaofeng;YANG Jiangxiao;WANG Famin(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1期126-133,共8页Tunnel Construction

基　　金：河南省重点研发与推广专项(科技攻关)项目(192102210061);中铁隧道局集团科技创新计划(隧研合2017-06)

摘　　要：为确保超大直径泥水盾构在海域软土地层掘进时盾构姿态满足施工需求,同时改善管片结构受力,减少管片崩角、破损的情况,结合汕头海湾隧道工程,建立盾构主机受力平衡方程,掌握在总推力一定的情况下各个分区压力、推力变化规律,分析推进系统各个分区输出不同推力时管片结构受力及变化情况,最终总结形成一种推进系统参数控制方法。利用该方法确定当总推力在50000 kN左右时,分区推力的建议控制范围和优选方案。The attitude of the super-large diameter slurry shield should meet the construction requirements when tunneling in soft soil layer of sea area,the force on the pipe segment structure should be improved,and the broken corner and damage of the pipe segment should be reduced.Hence,the force balance equation of main shield used in Shantou Bay Tunnel project is established.The variation laws of pressure and thrust in each zone are learned under the condition that the total thrust is certain,and the force and variation of the pipe segment structure under different output thrusts are analyzed.Finally,a parameter control method for the thrust system is put forward.The applicable results of the recommended method show that the control range and optimal scheme of the partitioned thrust can be determined when the total thrust is around 50000 kN.

关 键 词：超大直径盾构 海域软土地层 推进系统 参数控制 

分 类 号：U45[建筑科学—桥梁与隧道工程]