The construction of Wuchang Binjiang Underground Road Project is more than half of the "dual insurance" to ensure that "dripping water without leakage"

Lin Jing, a reporter from Hubei Daily, Correspondent Xiao Yao Xiao Fan

Wuchang Binjiang, East and West Linjiang Avenue, Heping Avenue, north -south martial arts one road, and the second bridge of the Yangtze River, the construction staff unloaded one car soil and sprinkled evenly above the underground ring. This is the largest underground loop project in Central China. On September 8th, a reporter from Hubei Daily all came to the construction site to find out.

Entering the underground of about three floors, the main body of the second standard section of about 900 meters has been completed, and the computer rooms and office houses have been built. Workers are renovating. Yao Qingsong, the person in charge of the second phase EPC project of Wuchang Binjiang core area of ​​China Railway Eleven Bureau, introduced that the second standard section has successfully achieved more than half of the construction task.

According to reports, the project plans to invest about 4.5 billion yuan, including a new main ring, 13 ramps and related supporting facilities of about 3 kilometers long to form a first -end closed underground ring. China Railway 11th Bureau undertakes the construction tasks of the second phase of the EPC section of the second phase of the underground ring road in the core area of ​​Wuchang. The construction tasks include the main ring line, 7 ramps and related supporting facilities of more than 1 km.

During the construction process, the underground ring road is only 100 meters away from the Yangtze River, and the underground conditions are complicated. How to ensure that the road is "dripping" after the road is completed?

Zeng Junhua, the technical person in charge of the project department, introduced that the ground floor of the foundation pit is mainly to accumulate viscous soil, viscous soil pink soil, and sand soil. The groundwater is abundant and the water head is controlled by the water level of the Yangtze River.

The risk of leakage and collapse may be used to adopt conventional waterproof processes. In order to solve the problem, the project department has determined the waterproof "dual protection" plan through the technical team's difficulties. "Simply put, we first construct a" box 'similar to a rectangle, and carry out the main structure construction in the' box '. "Zeng Junhua introduced that the bottom of the" box "can be achieved In the water -stop effect, the main structure mainly uses a combination of polymer waterproof materials and waterproof concrete to form a "dual insurance". In addition, in order to ensure the stability of the main structure of the ring road, the bottom is firmly grasped by setting the anti -pile method, and the top is combined with the piercing beam with the encirclement structure to ensure that it will not be in the operation process. Shake due to changes in groundwater.

According to reports, in addition to 13 ramps connecting ground roads and the Yangtze River Railway Tunnel, 15 new land entrances and more than 20,000 parking spaces are also built. Seamless".

The project is planned to be completed next year. After putting it in, it will greatly alleviate the ground traffic pressure on the core area of ​​Wuchang Riverside and relieve parking problems.

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