Φ15 m级超大直径盾构隧道衬砌管片线型控制技术  

Linear Control Technology of Tunnel Lining Segments for Shield with Super Large Diameter ofΦ15m

作　　者：刘峰 李小龙 夏东波 Liu Feng;Li Xiaolong;Xia Dongbo

机构地区：[1]中国交建集团有限公司 [2]中交天和机械设备制造有限公司,215557

出　　处：《工程机械》2022年第7期137-141,I0021,共6页Construction Machinery and Equipment

摘　　要：在南京和燕路过江通道的隧道掘进中,Φ15 m级超大直径泥水盾构在高水压和薄覆土地层下进行工作,衬砌管片线型控制难度极大。为保证隧道衬砌管片线型满足设计要求,从盾构掘进方向、盾构姿态、管片选型、同步注浆和上浮控制等方面,分析衬砌管片线型控制技术,并提出对应的解决措施。工程应用结果表明:环内、端面、环间最大错台量分别为4.1 mm、1.4 m m、4.4 m m,满足现有规范的控制要求,证明所提出的管片线型控制技术的可靠性。In the tunnel boring of the river crossing pathway of Hey an Road in Nanjing,a slurry shield with a super large diameter ofΦ15 m works under high water pressure and shallow overburden layer,which makes it extremely difficult to control the line of the lining segments.In order to ensure that the line of the tunnel lining segments meets the design requirements,the linear control technology for the lining segments is analyzed in terms of shield boring direction,shield attitude,segment selection,synchronous grouting and uplift control,and corresponding solutions are proposed.The engineering application results show that the maximum misalignments in the ring,at the end face and between the rings are 4.1 mm,1.4 mm and 4.4 mm respectively,which meet the control requirements of the existing specifications and prove the reliability of the proposed linear control technology for the segments.

关 键 词：超大直径盾构 高水压 薄覆土 衬砌管片 控制技术 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]