香港沙中线沉管隧道非典型终端接头合龙施工技术

Closure Construction Technology of a Typical Terminal Joint of Immersed Tube Tunnel of Hong Kong Shazhong Line

沉管隧道与两端隧道接口段相交接头通常为岸上接口段或水下终端接头施工,岸上接口段通常为明挖隧隧道施工,典型的终端接头一般方案为与现有隧道之间预留一定距离,采用水下临时密封连接和管内干施工方法完成终端接头。主要介绍了沙中线南北线沉管隧道E11-ME4非典型终端接头合龙施工技术。

The joint at interface between immersed tunnel and the tunnel at landfall can be either constructed at the shore or constructed underwater in form of terminal joint. As for typical terminal joint construction method,it requires to reserve certain distance between immersed tunnel and as-built tunnel section at the landfall,within the space of which temporarily sealed connection will be carried out followed up by in-situ construction in the dry. This paper will discuss about an untypical consturction method for terminal joint between E11 under Shatin to Cental Link-NSL Corss Harbour Tunnel and existing ME4 tunnel.