The dual-channel mud-water balance "Chuxinhao" shield machine launched this time was developed by China Railway Group for the Shenzhen-Dalian intercity project. The diameter of the cutter head is 9.13 meters.

Section from the No. 1 working shaft of the Shenzhen-Dalian Intercity 2 Intercity Zone to the Universiade Station is a double-hole single-line tunnel. The left and right lines of shield tunneling exceed 5 kilometers with big burial depth, high water pressure.

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