超大直径盾构穿越既有隧道的监护技术及运营组织  

Monitoring Technique and Operation Organization for Super-diameter Shield Tunnel Crossing Operating Tunnel

作　　者：周群 ZHOU Qun(Engineering Affairs Branch,Shanghai Rail Transit Maintenance Support Co.,Ltd.,200070,Shanghai,China)

机构地区：[1]上海地铁维护保障有限公司工务分公司,上海200070

出　　处：《城市轨道交通研究》2021年第5期231-235,共5页Urban Mass Transit

摘　　要：随着城市地下空间的利用率不断提高,新建隧道在穿越既有运营隧道时,对其产生的施工扰动不可避免,同时势必会增加地铁监护的难度。如何更好地从施工技术、保障方案、应对措施等角度,减小盾构穿越施工引起的运营隧道变形影响,对地下空间建设和运营有着重要意义。针对北横通道超大直径盾构下穿上海轨道交通11号线区间隧道的工程,结合穿越准备、穿越过程等节点,从风险分析、穿越方案、应对策略及控制标准等监护技术和运营组织出发,以控制既有运营隧道的结构变形以及确保地铁的运营安全。With the increasing utilization rate of urban underground space,shield tunnel excavation of new tunnel will inevitably cause disturbance and deformation to existing ones,which is bound to increase the difficulty of metro monitoring.It is of great significance for underground construction and operation to reduce the operating tunnel deformation caused by shield tunneling construction through construction techniques,protection schemes and countermeasures.Based on the project of super-diameter shield of Shanghai North Cross Passage undercrossing Metro Line 11 interval tunnel,combined with procedure nodes including crossing preparation and process,monitoring technique and operation organization such as risk analysis,crossing scheme,countermeasure strategy and control standards are considered to control the structure deformation of operating tunnel and to ensure the safety of metro operation.

关 键 词：超大直径盾构 下穿 运营隧道 监护技术 运营组织 

分 类 号：U455[建筑科学—桥梁与隧道工程]