New record witnesses "China Speed"!All pipelines of Dalian Bay Underwater Tunnel are completed

Recently, the first large -scale cross -sea sink tunnel in the northern part of China in my country, the Dalian Bay Underwater Tunnel, which was established by the China Communications Aviation Bureau, was successfully completed in the last section of the Dalian Bay Underwater Tunnel. At this point, all the mission of the Sinking tube of the Dalian Bay Oceanic Tunnel has been completed. Completed the accurate installation tasks of 18 aircraft carrier -level pipelines in 20 months, creating a new record in the history of the world's cross -sea sinking tunnel construction in the history of the construction of the sinking tunnel of the sea sinking tunnel. "Efficiency" further consolidated my country's leading advantage in the field of cross -sea sinking tunnel construction in the world.

The Dalian Bay Oceanic Tunnel is another super engineering with high technical requirements, complex construction environment, and high environmental protection requirements after the Hong Kong -Zhuhai -Macao Bridge. The total length of the underwater sinking section of the project is 3035 meters, consisting of 18 sections of sinking tube. Among them, the standard pipe section weighs about 60,000 tons, which is equivalent to the drainage of medium -sized aircraft carriers. The curve section of the pipe tunnel.

The E18 installed this time is the last pipeline of the entire line. The installation location is between the E17 pipe festival and the final joint. The six items of installation are "the most" difficulty in installing the most complicated, the most complicated installation space, the most difficult to control control, the most cumbersome process, and the maximum difficulty of protecting the end of the end.

The unprecedented difficulty makes the E18 tube festival the most difficult to install in the entire line. The project team has optimized the anchor setting plan many times at the scene, rationally adjusted the position and order of the cable, optimized the moisturizing process and carefully deployed the follow -up work after the tube joint installation was completed, and cleared the obstacles for the smooth installation of the pipe section.

At 6:00 on the morning of August 5th, Shen Tube's floating transportation was officially launched. At 23:26 pm, after about 17.5 hours of tension construction, the E18 pipeline festival installation and docking work was successfully completed. And the evaluation criteria, Dalian Bay Underwater Tunnel Sinking Pipe Floating Floating Installation was successfully "ended."

The Dalian Bay Shenluan Tunnel opened a precedent for the construction of a large -scale cross -sea sink tunnel in the cold area. Since the installation of the first section of the sinking tube on December 9, 2020, the construction team has successfully overcome the epidemic disturbances, and has successively overcome many technical problems such as poor geological conditions, stenosis in construction waters, deep water and deep grooves, and curvic sections. The use of the all -floating and flat process of the gravel bed, the localization transformation of the underwater line cable socket, the final connector installation process of the top section method, the leveling system of the flat ship, and the intelligent management cloud management cloud platform The first technological achievement at home and abroad laid the foundation for all pipelines to achieve high -precision docking, and brightened the golden signboard of the "national team" of a cross -sea sinking tunnel construction of the Aviation Bureau, and promoted the construction of my country's cross -sea sinking tunnel to a new level. Essence

Source: Jinyun

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