Linz Sewer
Austria, Linz

The newly developed medium-pressure nozzle system was the solution - it prevents the clogging of the cutterhead in cohesive ground and, consequently, a low tunnelling performance. An AVN1600TB excavated an almost one-kilometer-long sewage tunnel through loam, sand, marl and silt under the Danube River in Linz, Austria. The medium pressure nozzle system cut through chunks of loam during tunnelling and kept the excavation chamber free. After only two and a half months the project was successfully completed.

Data Sheet

Country, Location

Austria, Linz






Soft ground
Loam, sand, marl and silt

Tunnelling length

952 m

Machine Data

1x AVN Machine:
Diameter: 2,160 mm
Lining method: Pipe jacking
Cutterhead power: 160 kW
Torque: 474 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.