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CREG Delivers the World’s First Super-large Cross-section Rectangular Hard Rock Pipe Jacking Machine
Source: Date:2021年05月28日

Anthem of CREC—“Trailbreaker”

On May 19, the world’s first super-large cross-section rectangular hard rock pipe jacking machine “Tianfei No. 1,” designed and manufactured by China Railway Engineering Equipment Group Co., Ltd. (CREG) under China Railway Hi-tech Industry Corporation Limited, rolled off the production line in Xiamen, China’s Fujian Province.

The excavation section of “Tianfei No. 1” is 12.6 meters wide and 7.65 meters high. The cutting areas of adjacent cutterheads cross each other, and the cross-section excavation coverage rate reaches 95 percent. The machine has stronger rock breaking ability and tunneling efficiency that can excavate in high-strength hard rock stratum and 100MPa rock stratum. Meanwhile, it has little disturbance to the ground, ensuring its safe crossing of existing structures such as the Hangzhou-Shenzhen railway.

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