China News Service, Guangzhou, January 15 (Cai Min, Jie Yue Road Construction) Guangdong Provincial Communications Group announced on the 15th that after 24 hours of continuous operation, the E16 pipe section of the deep-middle channel immersed tube tunnel successfully completed the sinking and laying.
So far, 21 immersed pipe joints have been docked in the Shenzhen-Zhongshan Channel, and the installation length of the pipe joints has reached 3,217.8 meters, realizing the "first show" of the project's submarine tunnel construction.
According to reports, the E16 pipe section is a climbing section with a length of 165 meters, a width of 46 meters, a height of 10.6 meters, and a weight of about 80,000 tons.
During the stage of the foundation bed leveling operation, the construction team relies on the self-developed gravel leveling ship to carry out the full lifting operation to reduce the adverse effects caused by the weak interlayer geology; before the subsidence, the water depth scan of the construction area is carried out to fully grasp the water depth Condition and shallow areas, optimize mooring anchors, evaluate in advance and formulate countermeasures.
At 6 o'clock on January 15th, after fine-tuning and laying, pulling and hydraulic crimping and other processes, the E16 pipe section completed the millimeter-level precise docking.
At 18:20, it was determined by the penetration measurement that the butt joint accuracy of the pipe joints met the acceptance evaluation standards.
According to reports, in 2022, the construction of the Shenzhen-Zhongshan Channel project will enter a critical period of climbing and crossing the hurdle. It is planned to complete the construction of the box girder of the approach bridge in the sea, the closing of the Zhongshan Bridge, and the Lingdingyang Bridge will be transferred to the main cable installation stage, and the installation of the subsea tunnel immersion pipe will continue. advance.
(Finish)