沉管尾端钢封门保护罩安装施工技术

摘要

The foundation trench siltation is major problem in the construction of immersed tube tunnel of Hongkong-Zhuhai-Macao Bridge. To protect the safety of bulkhead in the end of tunnel element when dredging boat working nearby the ending, we researched a device that can protect the safety of the end bulkhead, which can be installed and removed accurately under water. It has some reference value to the protection of bulkhead protected steelwork of immersed tunnels.%港珠澳大桥沉管隧道基槽回淤是施工面临的重大难题，为保障专用清淤船在沉管尾端清淤时钢封门的安全，自主研发一套能够保护沉管尾端安全的保护罩。实现了保护罩的水下精确安装与拆除，对后续沉管隧道的钢封门保护具有一定借鉴意义。