Metro tunnel between MS 13 and MS 18, Sofia, Bulgaria
Tunnel constructions - New Austrian Tunneling Method
- Length = 2 x 395 m., Profile = 35 m2, each pipe
- Activity: Drilling and reinforcement, isolation and inner concrete
Techical data
L = 2 x 395 m, ∅ = 35 sq.m.
Year
2010 - 2011