Super shield machine to be used for airport line
SHANGHAI’S first home-made super shield machine for digging and construction of an express line to connect the city’s Hongqiao and Pudong airports was unveiled yesterday.
Developed by Shanghai Tunnel Engineering Co, the shield named Qiyue, or “swift horse,” weighs around 3,200 tons and is 99 meters long. The 14-meter diameter blades can dig and push 60 millimeters a minute underground.
“The normal blades used to dig the city’s subways are 6.9 meters in diameter and can hardly meet the demand of the express line,” said Gong Wei, general manager of the company’s machine manufacturing branch.
The super shield was designed especially for the express line, which requires long distance digging and frequent but subtle turns to avoid the city’s intricate Metro network.
It will be put into use early next year and will be the first domestically developed shield used on the express line project. It will initially dig 2.2 kilometers from Meifu Road in Minhang to Huajing in Xuhui in the west section of the line.
The 68.6-kilometer express line is expected to shorten travel time between the two airports to less than 40 minutes from 90 minutes on completion in 2024. The line will have nine stations across Xuhui and Minhang districts as well as in the Pudong New Area.
It will run through the Hongqiao transport hub, Qibao historical town, Huajing Town, Sanlin Town, Zhangjiang High-Tech Park, Shanghai Disney Resort, Pudong International Airport as well as the planned new terminal building of the Pudong airport, and Shanghai East Railway Station.
The express line will be able to connect with the nation’s railway system and the intercity transport network of the Yangtze River Delta region.
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