All prefabrication of the Shenzhen -Middle Channel Oceanic Tunnel Standard Pipeline

On August 12, the E22 pipe festival was successfully completed by the CCCC Fourth Airlines Bureau's Shenzhen -Middle Channel project, marking the completion of all the standard pipe sections of the submarine tunnel of the Shenzhen -Middle Channel.

At present, the project department has begun to transform the Niu Tou Island Shenguan Smart Dream Makeup Factory. It is expected that the last pipe section of the Shenzhen -Middle Channel will begin in November -the prefabrication of E23.

Shenzhong Channel Project E22 Sinking Pipe

The Shenzhen -Middle Channel is another world -class "bridge, island, tunnel, and underwater interoperability" after the Hong Kong -Zhuhai -Macao Bridge. It is located in the core area of ​​the Guangdong -Hong Kong -Macao Greater Bay Area. The design speed of 100 kilometers per hour is the only straight channel between the two major functional groups of the Pearl River Delta "Shen Wanhui" and "Pearl Zhongjiang".

After the Shenzhen -Middle Channel is completed and opened to traffic, it will directly connect Shenzhen, Zhongshan, and Guangzhou with a mileage of 24 kilometers and 20 minutes.

The Shenzhen -Middle Channel's submarine tunnel is 6.8 kilometers in length. It is the world's longest and wider seabed pipe tunnel. It consists of 32 sections. The CCCC Fourth Airlines Bureau is responsible for the pre -system of the 23rd section. The standard pipeline is 165 meters long, 46 meters wide, and 10.6 meters high.

The deep -middle channel sinking tunnel adopts steel shell concrete structure in the world for the first time, which has the characteristics and difficulties of "ultra -wide, deep burial, widening".

"We have developed technologies and equipment such as high volume stability self -dense concrete, the world's largest smart trolley formation, and the world's first smart pouring system. . "Project manager Zhang Wenson introduced," Relying on these advanced technology and equipment, the project department has achieved the efficiency of 1 monthly prefabricated section. "

Smart pouring machine of the Fourth Airlines Bureau of China Communications

As the core control engineering of the deep and middle channel, the prefabricated quality of the sinking tube directly determines the realization of the 100 -year service life of the Shenzhen -Middle Channel. The designer sets a very harsh standard for the pouring of the sinking tube concrete- — The gap between the steel shell and the concrete of each position cannot exceed 5 mm. You know, the prefabrication of each section of the Shenzhen -Middle Channel must be filled with a dense concrete of nearly 30,000 cubic meters to 2,255 different types of warehouses. The detection of 50,000 warehouses is qualified.

In order to meet the standards, the project team "tailor -made" a intelligent pouring equipment for the Shenzhen -Middle Channel. This set of equipment has the ability to get more obstacles and can move flexibly. , Precisely control the fullness of the concrete of each warehouse to ensure the quality and efficiency of the pipe tube prefabricated.

Sinity concrete test test

Sun Shuai, director of the project department's laboratory, said that after more than 10 months of technical teams and more than 1,000 trials, it finally developed a high volume stability of high volume stability that can achieve a state of no more than 5 mm.

China Communications Fourth Airlines Smart Building Auto Group

Zhuhai Niu Tou Island Shenguan Smart Dream Factory

Text/Guangzhou Daily · Xinhua City Reporter: Li Yan Correspondent: Yang Kun, Pan Zhaoqi Picture/Guangzhou Daily · Xinhua City Reporter: Li Yan Correspondent: Deng Yixin, Pan Zhaoqi, Lin Wenqi Guangzhou Daily · Xinhua City Editor: Zhang Ying

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