Technical specifications

Scope of work

• 2 parallel tunnel tubes with a length of 1.645 km each, inner diameter 10,15 m; 6 cross passages driven under the protection of ground freezing; 2 access ramps, which at the same time function as start and target shafts, Passing under A4/A133 motorways incl. connection to existing infrastructure

Construction method

• Single segmental lining, driven by a slurry shield, shield diameter: 11.32; reinforced concrete segments with a thickness of 40 cm

Geology

• Quartenary fills of sands and coarse clays, interstratifications of peat and clay, Tertiary sands