地铁工程土压平衡盾构施工风险分析  

Study on Risk of the Construction of Earth-pressure-balanced Shield in Metro Engineering

作　　者：丁振明[1] 廖秋林[2] 李从昀[3] 

机构地区：[1]北京安捷工程咨询有限公司,北京100037 [2]北京城建集团有限责任公司土木工程总承包部,北京100088 [3]北京电力经济技术研究院,北京100055

出　　处：《施工技术（下半月）》2012年第12期64-67,共4页Construction Technology

基　　金：国家"十一五"科技支撑计划(2008BAJ06B01-3)

摘　　要：在地铁工程特点分析的基础上,对应用土压平衡式盾构施工中的渣土改良、刀盘配置、工作井加固、盾构掘进、管片安装、注浆等一些常见的技术风险问题进行了相应的探讨。指出土压平衡式盾构施工中,应做好以下工作:①做好各阶段工程风险的评估工作,提前预知风险;②施工中做好监控量测与风险管理工作,利用信息化监管手段,及时采取有效措施规避风险;③做好应急预案应对紧急情况的发生,最大限度地阻止风险扩展。Characteristics of Metro engineering are analyzed and based on that,the authors discuss some usual technical risks such as soil improvement,cutter-head selection,reinforcement of working well,shield tunnel,installation of duct piece and grouting.It is pointed out that during the construction of earth-pressure-balanced shield,the following works should be done： 1） risk evaluation should be done for every stage;2） monitor and risk management during construction should be done so that effective measures can be taken to avoid risks;3） emergency measures should be prepared to prevent risk from propagating.

关 键 词：地铁工程 盾构 土压平衡 风险 

分 类 号：TU94[建筑科学—建筑技术科学] U459.3[建筑科学—桥梁与隧道工程]