The Haizhu Bay Tunnel, the first super-large-diameter shield tunnel in the Pearl River Basin, was finally drilled through in Guangzhou, south China's Guangdong Province, on Monday, marking new progress in its construction.
The total length of the two-way six-lane tunnel, a provincial and municipal double key project, is 4.35 kilometers. The shield section is 2,077 meters long, and the excavation diameter is 15.07 meters, while the outer diameter of the segment is 14.5 meters.
"The Haizhu Bay Tunnel is the most crucial control project of the Guangzhou South Railway Station's rapid transit system. It is also the first project in Guangzhou to utilize a super-large-diameter shield tunnel to cross the Pearl River system. Today, the smooth operation of the boring machine used for constructing the west tunnel marks the achievement of the drill-through of two tunnels of the key project in Guangdong Province," said Wang Haijun, general manager of the project.
Upon its completion and inauguration in 2025, it will form an express channel between Guangzhou's city center and Guangzhou South Railway Station, cutting the travel time between them to 15 minutes, and further improve the infrastructure level of the Guangdong-Hong Kong-Macao Greater Bay Area.
Ultra-large-diameter tunnel drilled through in Guangdong
