Chongqing Yangtze Crossing Tunnel
China, Chongqing

To improve the water quality of the city of Chongqing and protect the Three Gorges Dam reservoir, it was planned to construct a tunnel 20 - 30 meters under the Yangtze river bed. The purpose of the tunnel is to divert sewage and improve the regional water quality.

To drive the tunnel, a Herrenknecht Mixshield excavated a 855-meter-long tunnel from Yuzhong in the north to Nan`an in the south. After only four months tunnelling, the Mixshield broke through to the target shaft on August 1, 2004.

Data Sheet

Country, Location

China, Chongqing






Heterogeneous ground
Sandstone, claystone, limestone

Tunnelling length

855 m

Machine Data

1x Mixshield:
Diameter: 6,570 mm
Lining method: Segmental lining
Cutterhead power: 630 kW
Torque: 3,050 kNm

Your contact person Contact us

Steffen Dubé President and General Manager Herrenknecht Tunnelling Systems USA Inc.
Gerhard Goisser Commercial Manager Herrenknecht Tunnelling Systems USA, Inc.