On July 25, the super project in Guangdong-Hong Kong-Macao Greater Bay Area-the widest steel shell immersed pipe E32 pipe section of the deep-medium channel was completed and undocked, which lasted two and a half hours, refreshing the world’s ultra-wide pipe section in restricted waters. Dock records. The deep-medium channel is a super sea-crossing channel that integrates "bridges, islands, tunnels, and underwater intercommunication". The immersed tube tunnel is about 6.8 kilometers long and is the world's first two-way eight-lane steel shell concrete immersed tube tunnel.
The immersed tube tunnel is composed of 32 tube sections, of which, the E32 tube section is the first non-standard tube section of the project tunnel, which is connected to the island head weir construction section of the East Artificial Island. The E32 pipe section is 123.8 meters long, gradually widened from 53.6 meters wide to 55.46 meters, and 10.6 meters high. It has the technical characteristics of "ultra wide and widening". After the pouring, the steel shell concrete pipe section weighs about 68,000 tons, which is higher than before. The sunken E1 pipe joint weighs 8,000 tons. (Cai Minjie Yuelu Jian editor Zhou Yuchen)
Editor in charge: [Wang Sishuo]