摘要
上海轨交13号线二期入场线区间采用了250 m极小半径的隧道形式,其小半径段还包含有浅覆土、竖向坡度变化大、极限穿越既有隧道和管线等难题。为此,从盾构设备选型、测量轴线控制、纠偏方式与技术、推进参数选取、管片拼装技术、注浆技术等方面采取了适用可行的措施,使隧道无渗漏、无碎裂并按轴线圆满完成。工程中形成的极小转弯半径地铁隧道施工技术可供类似工程参考。
The second-phase entrance section of Shanghai rail transit line 13 adopts a form of 250 m tunnel with minimal turning radius,which has problems such as shallow overlying soil,large vertical slope variation and limit crossing through existing tunnels and pipelines.To this end,appropriate and feasible measures have been taken from the aspects of shield equipment selection,measurement axis control,deviation correction method technology,propulsion parameter selection,pipe segment assembly technology,grouting technology,etc.,to successfully complete the tunnel construction according to the axis design without leakage and fragmentation.The construction technology of subway tunnel with minimal turning radius formed in the project can be used as a reference for similar projects.
作者
黄炜焱
林海骏
HUANG Weiyan;LIN Haijun(Shanghai Mechanized Construction Group Co.,Ltd.,Shanghai 200072,China)
出处
《建筑施工》
2019年第10期1889-1892,共4页
Building Construction
关键词
极小转弯半径盾构施工
浅覆土
极限穿越
轴线控制
shield construction with minimal turning radius
shallow overlying soil
limit crossing
axis control
