Client
Municipality of Sofia, Bulgaria
Main Contractor
Taisei Corporation, branch Bulgaria
Construction period
September 2008 – December 2009
Objects description:
- tunnel boxes
- rotation shaft connecting with tunnel boxes
- reinstatement of subway
Construction technology:
Mechanical excavation, open cut excavation.
Executed works:
- underpinning of metro foundation
- tunnel boxes concreting
- cut and cover tunnel – west tunnel tube – 42,71 m, east tunnel tube – 45,50 m
- driven tunnel – west tunnel tube – 37,75 m, east tunnel tube – 34,98 m