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PDB 59

Construction Project
Municipal Railway Dortmund, Contract section K5
Location
  • Dortmund
Client
  • City of Dortmund
Planning
  • Metropolitan Railway Construction Office of the City of Dortmund
Investment volume
  • approx. DM 39.0 million
Construction time
  • 33 months
Activities
  • Construction management
  • Contract management
  • Technical coordination
Structures constructed
  • Starting shaft in open construction with 21,800 m³ shaft excavation
  • Two one-track tunnels (L = 868 m) with 67,500 m³ tunnel excavation
  • Underground railway station as middle platform (L = 124 m)
  • Underground track change in switch area (L = 76 m)
Special features
  • Utilization of hydraulically driven local section machine
  • Tunnelling using New Austrian Tunnel construction method, making use of reasonable cross-section breakdowns
  • Tunnelling of track change with excavation cross-sections of 36 to 140 m² with a cover of only 4.00 to 5.00 m between tunnel roof and road surface
  • Cross-section height of track change 18.00 m
  • Restriction of the settlement to 25 mm
Utilization
  • Metropolitan railway tunnel of the City of Dortmund
Construction
  • Driving of the tunnels in partial cross-sections
  • Securing of the tunnel embrasure using lining arches, concrete reinforcement steel mats and spray concrete
  • Installation of a tunnel inner shell using concrete impervious to water
Geology
  • Fills, sands, silts and weathered clay
  • Unweathered, rock-hard clay