摘要
苏通管廊越江隧道工程是我国近几年较为典型的水下大直径泥水盾构工程,盾构穿越地层以淤泥质黏土、粉质黏土、粉土、粉细砂等地层为主,在掘进过程中较易结成泥饼。文章依托于苏通管廊越江隧道工程,基于刀盘面板冲刷仿真模型实验,分析刀盘掌子面区域的流场分布特性,提出刀盘冲刷喷头数量和位置的优化设计方案。通过现场冲刷试验分析表明采用该刀盘面板冲刷系统,冲刷效果较好,可以保证刀盘中心冲刷区域及开口的流畅性。通过现场掘进实验分析表明在掘进过程中及掘进贯通完成后并没有出现结泥饼现象,刀盘中心冲刷系统的设计可满足工程需求,达到较优的冲刷效果。
The Sutong Tunnel Project is a typical engineering of the underwater slurry shield with a large diameter in China in recent years.Stratum traversed by shield is mainly composed of silt clay,silty clay,silt,and silty sand,which is easy to form mud cake in the process of tunneling.This paper analyzed the distribution characteristics of the liquid flow-field in the cutterhead and proposed the optimal design of the number as well as the position of the nozzle of the cutterhead with the simulation experiment according to the Sutong Tunnel Project.The good scouring effect of the cutterhead in the field scouring experiment proved that the fluidness of the center scour area and opening of the cutterhead can be guaranteed.No mud cake in the process of tunneling and completion in the field tunneling experiment indicated that the scouring system design of cutterhead can satisfy the engineering demand and achieve the optimal souring effect.
作者
陈健
苏秀婷
孙旭涛
Chen Jian;Su Xiuting;Sun Xutao(Ocean University of China,Qingdao 266100,China;China Railway 14 Bureau Group Co.,Ltd.,Jinan 250014,China)
出处
《土木工程学报》
EI
CSCD
北大核心
2020年第S01期143-154,共12页
China Civil Engineering Journal
基金
国家自然科学基金(高铁联合基金U1834208)
国家重点基础研究发展计划(2015CB057800)
关键词
水下大直径盾构
设计研究
仿真模拟
刀盘冲刷系统
喷头布置
冲刷特性
large diameter shield under water
design and research
simulation
cutter head scour system
layout
scour characteristics
作者简介
陈健(1973—),男,博士研究生,教授级高级工程师。主要从事大盾构及水下盾构隧道施工领域的技术科研工作,E-mail:chenjian1018@163.com;通讯作者:苏秀婷(1986—),女,博士研究生,高级工程师。主要从事工程环境保护和大直径盾构施工方向的研究;孙旭涛(1988—),男,学士,助理工程师。主要从事水下盾构隧道施工方向的研究。
