"Sichuan Qi East Delivery" Controlling Project Weijiang Line Yangtze River Tunnel Project smoothly runs through

On September 22, with a sound of artillery, the "Sichuan Qi East Send" controlling engineering Wa (Yuan) Jiang (Jin) Line Yangtze River Tunnel Project successfully penetrated after 307 days of construction.

According to reports, Weiyuan and Luzhou shale gas collection trunk projects are in order to connect Weiyuan, Luzhou, and Yuxi West Shark gas production zone to losing the trunk line, and bear the function of the block shale gas output function. The collection of trunk lines and Sichuan -Chongqing backbone pipe networks, and the Zhonggui Line and Zhonggui Line and the proposed Xinchuanchuan pipeline communicated with each other, taking into account the function of the Sichuan in the later period. After completion, the Sichuan -Chongqing backbone pipe network can be improved, which is convenient for the deployment of Sichuan -Chongqing pipeline network. It is a key project for the target of 50 billion gas -producing gas fields in the Southwest Oil and Gas Field Branch of PetroChina.

The entire river has been crossing a large -scale crossing (Yangtze River, Minjiang River), among which the Yangtze River Tunnel crossing project that is undertaken by the China Railway Tunnel Bureau has undertaken the mission of civil construction. The total length of the Yangtze River Tunnel is 1638.6m. It is located in Jiangjin District, Chongqing City. The design uses the "diagonal well-Pingxiang-Xiejing" crossing method. Among them, the diagonal well tilt angle at both ends is 25 ° (the slope is 46.7%), and the maximum burial depth is about 101M The minimum burial depth of the river is about 70m (top to the bottom of the river), and the construction of the drilling method is used.

The person in charge of the construction of the tunnel on site stated that the Yangtze River Tunnel has a high risk of crossing engineering, with a small section (limited space), through the Yangtze River, large steep slopes, rail transportation, blasting construction and through operation railway. Management and construction organizations bring new challenges, and the construction team continues to innovate management and optimize organizations to ensure the safety, efficient and high -quality advancement of the project.

It is reported that after the excavation of the Yangtze River tunnel, the secondary lining plan of the tunnel was planned to be completed at the end of October. So far, the main structure of the tunnel is completed.

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