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Bewag Berlin
Germany, Berlin
1997 – 1999

A new 380-kV cable installation had to be been built between the Friedrichshain in the Berlin district of Prenzlauer Berg and the newly constructed transformer station Marzahn in the district of the same name. It is intended to close the final gap in the diagonal measuring a total of 38.3 kilometers through Berlin's load centers.

Starting from three shafts, three Mixshields were in use at the same time. The TBMs tunnelled through 5.4 kilometers of ground at a depth of up to 25 meters. The maximum tunnelling output was 185 meters a week. A number of houses, commuter, and local train lines along the route had to be crossed under. Bewag, the Berlin electricity supplier, put the cable installation into operation on November 6, 2000.

Data Sheet

Country, Location

Germany, Berlin

Year

1997 – 1999

Application

Electricity

Geology

Heterogenous ground
Marl, coarse clay, melt water, sand with gravel, boulders

Tunnelling length

5,400 m

Machine Data

1x Mixshield:
Diameter: 3,780 mm
Lining method: Segmental lining
Cutterhead power: 132 kW
Torque: 502 kNm

2x Mixshield:
Diameter: 3,605 mm
Lining method: Segmental lining
Cutterhead power: 180 kW
Torque: 350 kNm

Your contact person Contact us

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