Two Super Large Diameter Shield Machines Rolled off the Assembly Line in CRCHI

2021-07-30

Recently, two super large diameter slurry balance shield machines "Jianxun" and "Xinchuanyue" have rolled off the assembly line in the Changsha First Industrial Park of CRCHI and will participate in the construction of the Shanghai Airport Link Project.

The Shanghai Airport Link Line is 68.68 kilometers long and has a "Y"-shaped structure. It has 9 stations and a design speed of 160 kilometers per hour. It is one of the first batch of 11 municipal railway demonstration lines. It is also the important east-west fast track in the wire network of Shanghai rail transit.

With an excavation diameter of 14.02 meters, the two products adopt mature overall independent design and system integration technology and are equipped with a large flow mud water scour circulation system, a high-precision gas-liquid pressure balance control system, and a radial thick mud injection compensation system, which improve the geological adaptability of the shield machine and ensure that the equipment can complete the project construction in a safe, fast and efficient state.

The Shanghai Airport Link Project is planned to be completed and put into operation in 2024. After its completion and operation, it will be convenient for passengers to transfer between the Pudong and Hongqiao airports. By preserving the interconnection conditions with the national railway network and the Yangtze River Delta intercity network, the project will further improve the city's business environment and provide strong support for the implementation of the integrated development of the Yangtze River Delta.