Technical specifications

Project description

• 1 double-track railway tunnel
• Total length 2,613 m
  of which a first part of approx. 80 m is driven in mining technique
• 1,820 m in hard rock with TBM and 713 m in soft rock
• Inner diameter tunnel 11.19 m
• Drilling diameter 12,79 m
• 3 rescue and escape tunnels with the respective shafts
• As well as 5 bays for technical purposes in the tunnel

Construction method

• TBM-driven tunnel with convertible TBM
  in hard rock as well as in soft rock(slurry mode)
• Shield diameter 12.75 m
• Double lining with tunnel segments as outer lining
  and in-situ concrete lining as inner lining
  with external sealing with a thickness of 30 cm each
• The rescue tunnels are constructed in mining technique

Geology

• Effingen beds (claystone partly cemented)
• Lower freshwater Molasse Gravel in soft rock sections