中心城区复杂地层条件超大直径泥水盾构下穿运营地铁隧道关键施工技术  

Key Construction Techniques for Ultra-Large Diameter Slurry Shield Undercrossing Operation Subway Tunnel in Complex Stratum Conditions of Central Urban Area

作　　者：仇崧羽 QIU Songyu(Shanghai Foundation Engineering Group Co.,Ltd.,Shanghai 200433,China;Shanghai Engineering Research Center of City Trenchless Construction,Shanghai 200433,China)

机构地区：[1]上海市基础工程集团有限公司,上海200433 [2]上海城市非开挖建造工程技术研究中心,上海200433

出　　处：《建筑施工》2024年第3期396-399,共4页Building Construction

基　　金：上海市科学技术委员会资助项目(18DZ2283100)。

摘　　要：以上海北横通道下穿上海地铁10号线为例,介绍超大直径泥水平衡盾构机穿越运营地铁的施工技术措施,着重对穿越过程中所采取的一些关键技术进行分析,认为盾构推进时采取适当降低切口压力、填充适量的克泥效、增大同步注浆填充量、穿越后微扰动注浆等措施,对在建隧道本身及穿越段运营地铁运行稳定、安全有较好的效果。Taking the Shanghai Beiheng Passage undercrossing Shanghai Metro Line 10 as an example,this paper introduces the technical measures for the construction of super-large diameter slurry shield passing through the metro in operation,and emphatically analyzes some key technologies adopted in the process of crossing.It is considered that the following measures should be taken to ensure the stability and safety of the tunnel under construction and the operation of the subway in the crossing section,such as appropriately reducing the incision pressure,filling an appropriate amount of anti-clay agent,increasing the filling amount of synchronous grouting,and achieving micro-disturbance grouting after crossing.

关 键 词：超大直径泥水平衡盾构 下穿运营地铁 施工技术措施 沉降控制 

分 类 号：TU99[建筑科学—市政工程]