The "tailor-made" shield machine for the Shantou Railway will be used in the world's first 350 km/h high-speed rail undersea tunnel

On January 10, the world's first design standard is 350 kilometers per hour of sandstones sandstones, railway tunnel in construction of shantou bay "jack", the whole length of 160 meters, cutter diameter 14.57 meters large diameter shield "yongping" hybrid manufacturer in offline smoothly recently, scheduled for the end of march this year in shantou bay north shore of the tunnel construction of shield tunnel segment starting point the well initial excavating.

Shantou Bay Undersea Tunnel of Shantou Railway is located in Shantou Bay of Shantou City. It is the first high-speed railway undersea tunnel in China and also the first in the world with a design standard of 350 km/h and a large diameter cross-sea shield. The total length is about 9.8 km, among which the length of the shield section is 2,169 meters. Starting from the original well, the shield machine will pass through 890 meters of soft soil, 430 meters of upper soft and lower hard rock and 809 meters of full section hard rock successively.