Technical specifications

Scope of work

• Length: 2.2 km, excavated cross-section: 80 m² - 100 m²
• 2 parking bays, area: 125 m²
• 6 cross-passages to an existing exploration tunnel
• Ventilation shaft, diameter: 4m, depth: 38 m
• Service buildings and emergency exit shafts

Construction method

• Drill and blast method in combination with tunnel excavator,
  length: 1.4 km;
• Cut and cover method: 732 m

Geology

• Ground moraine
• Flysch sedimentary rock