Abstract

The immersed tube tunnel of the Hong Kong-Zhuhai-Macao Link spans a total length of approximately 6.7 km and is currently the longest concrete immersed highway tunnel in the world. The maximum depth of the tunnel is 45 m, which enables the smooth navigation of 300,000 tons of fully loaded tankers through the waterway above. Accordingly, the construction of the immersed tube tunnel of the Hong Kong Zhuhai-Macao Link is regarded as one of the most challenging tunnel projects in the world due to the poor geological conditions, the remarkable length of the tunnel section, the harsh construction conditions at sea, and the complicated stresses on the structures in the transition sections between the artificial islands and the immersed tunnel segments. In this context, several innovations were implemented in the design, production and installation of the immersed tube segments, providing valuable engineering experience and a unique example of engineering technology for the construction of undersea tunnels worldwide.

摘要

港珠澳连接线沉管隧道全长约6.7公里，是目前世界上最长的混凝土沉管公路隧道。隧道最大深度为45m，可让30万吨满载油轮顺利通过上方航道。因此，港珠澳干线沉管隧道的建设，因其地质条件恶劣、隧道段长度显着、施工条件恶劣，被认为是世界上最具挑战性的隧道工程之一。海，以及人工岛与沉管隧道过渡段结构上的复杂应力。在此背景下，设计中实施了多项创新，