Construction Project
Municipal Railway Dortmund, Contract section K5 |
Location
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Client
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Planning
- Metropolitan Railway Construction Office of the City of Dortmund
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Investment volume
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Construction time
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Activities
- Construction management
- Contract management
- Technical coordination
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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)
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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
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Utilization
- Metropolitan railway tunnel of the City of Dortmund
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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
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Geology
- Fills, sands, silts and weathered clay
- Unweathered, rock-hard clay
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