Technical specifications

Scope of works:

Double track railway tunnel

• parallel service tunnel
• underground station
• caverns and access tunnel

Construction method:

• Drill and blast: Length 5.60 km with an excavated volume of approx. 655.000 m
• Cross-sections: 80 m² (access tunnels)
  130 m² (standard cross-section of double-track tunnel)
  up to 600 m² (widened tunnel in the area of Korsvägen Station East)

Open construction:

• Korsvägen Station East excavation: 140 m long, up to 28 m deep,
  open construction
• Liseberg excavation: 260 m long, up to 22 m deep, top-down method
  Almedal trough structure
• open construction section: 620 m long
  Civil works including several temporary bridges and a highway access ramp

Geology:

• Drill and blast: granite, granodiorite, gneiss
• Open construction/top-down method: topsoil, sand, slit, (Lera-)clay,
  quick clay, moraine