E14 pipe section of deep channel submarine immersed tube tunnel was sunk and docked successfully

After 25 hours of continuous operation, shenzhong Channel, the core hub project of the Guangdong-Hong Kong-Macao Greater Bay Area, completed the sinking and docking of E14 pipe segments, guangdong Communications Group announced on Nov. 15. So far, 17 pipe segments of shenzhong Channel have been successfully docked, with the length of the submerged tunnel reaching 2,640.2 meters.

Shenzhongdao Undersea tunnel is the world's first bi-directional eight-lane super-wide steel-shell concrete immersed tube tunnel, which consists of 32 pipe sections and one final joint. Among them, E14 pipe section is the standard pipe section, 165 meters long, 46 meters wide and 10.6 meters high.

To overcome the cold weather the sea domain wave, seawater density change on the risks of construction ship pipe stress, and for a long time, DaTiLiang data operation for the effect on the stability of the immersed tube positioning equipment, precision ShiCe construction team, early replacement spare beidou positioning equipment, in a timely manner to upgrade debugging software construction, optimization of ship pipe connection components, And the intelligent system is used to monitor the force of the ship pipe connection in real time to ensure the uniform force of the ship pipe.

At 5:30am on November 14th, the E14 pipe section of the submersible transport and safety integrated ship officially set sail. Under the escort of Guangdong Maritime Safety Administration and Shenzhen Maritime Safety Administration, it was floated and transported to the submersible sea area after nearly 50 kilometers of waterway. At 6:30 a.m., 15th, E14 pipe section and E13 pipe section were docked through the process of sinking, pulling and hydraulic pressing. At 20:30, it was confirmed by through-through measurement that the joint accuracy met the acceptance and evaluation standard.

At present, the construction of shenzhen-China Corridor is progressing steadily. Lingdingyang Bridge and Zhongshan Bridge have entered the superstructure construction stage, the construction of the east and west artificial islands has been carried out orderly, and the sunken tube tunnel is springing to prepare for the sinking of the next pipe section.