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Amsterdam Water Tunnel
Netherlands, Amsterdam
2003

The A2 motorway between Amsterdam and Utrecht was being widened and this also necessitated the laying of two water pipes parallel to the motorway. Because of the soft ground, trenchless, mechanized tunnelling was selected. The drilling for the 16-meter-long steel pipes ran beneath the upper turf layer in sand. Intermediate jacking stations could not be employed in connection with these steel pipes. 

Two Herrenknecht AVN1000XC machines laid the steel pipes at a depth of ten meters. The total length of five kilometers called for eleven sections. Never before had 500-meter-long pipeline sections with this kind of diameter been put in place without the use of intermediate jacking stations. Up to 32 meters of pipeline were built per twelve-hour shift with relatively low thrust force - including welding, ultrasound testing and lining of the steel pipes.

Data Sheet

Country, Location

Netherlands, Amsterdam

Year

2003

Application

Water

Geology

Soft ground: Sand, turf

Tunnelling length

5,000 m

Machine Data

2x AVN Machine:
Diameter: 1,295 mm
Lining method: Pipe jacking
Cutterhead power: 75 kW
Torque: 120 kNm

Your contact person Contact us

Jack Brockway President and CEO Herrenknecht Tunnelling Systems USA Inc.
Gerhard Goisser COO Herrenknecht Tunnelling Systems USA, Inc.