摘要
研究目的:盾构机选型是盾构法施工的关键环节,盾构的适应性直接决定和影响盾构隧道的施工成本、进度及安全风险。本文结合武汉地铁二号线越江段工程,系统分析了越江隧道泥水盾构选型的适应性,提出相应控制措施。研究结论:基于人-盾构-环境系统工程理念,分析了盾构与工程环境适应性的基本概念与内涵,具体针对高水位、浅覆土、复合地层等工程环境特点,分别提出了防止开挖面失稳、江底冒浆、泵吸口堵塞、盾尾漏浆、隧道上浮等方面的施工控制措施,从而降低和控制盾构江底段施工风险,并为类似工程提供有益参考。
Research purposes： The type selection of shield machine is a key element for the shield construction and the shield adaptability is crucial to the construction cost,the construction schedule and the construction safety.Combined with the construction of river-crossing tunnel of Line 2 of Wuhan metro,this paper analyzes the adaptability of slurry shield tunnel and offers the the corresponding control measures.Research conclusions：Based on the systematic engineering concept of the adaptability between man and the shield tunneling and the construction environment,the analysis is made for the basic concept and intension of the shield adaptability to the construction environment.According to the characteristics of the construction environment,such as the high hydraulic pressure,the shallow covering and the compound stratum etc,the control measures such as setting and adjusting appropriate face pressure,control of shield tunneling attitude,matching the grouting volume and speed with the shield speed are offered to reduce and control the construction risks,such as destabilization of excavation surface,mud pumping in the river bottom,block of the pumping mouth,mud leaking at the shield end and tunnel floating.This can provide the reference to the similar projects.
出处
《铁道工程学报》
EI
北大核心
2010年第11期68-74,共7页
Journal of Railway Engineering Society
基金
中国博士后面上项目基金(20080440947)
关键词
越江隧道
泥水盾构
盾构选型
适应性分析
工程环境
river-crossing metro construction
slurry shield
shield type selection
adaptability analysis
construction environment
