The project involves the extension of current Sofia Metro, Line III Lot 4 in relation with Depot “Botevgradsko Shosse” Boulevard - VI. Vazov Boulevard, Central City Area, “Ovcha Kupel” District - Lot 4: km 11+966,34 (Start Shaft) - km 5+248,57 (Exit Shaft) Construction of TBM Tunnel.
- Location Sofia / BULGARIA
- Client Metropoliten “EAD”
- Cross Section TBM - Circular
- Excavation Diameter TBM - 9,39 m
- Length of the Tunnels 6.717,77 m TBM
- Earthworks 407.850 m³ - TBM Excavation
105.000 m³ - Shaft Excavation
- Concrete 108.000 m³
- Segment 4077 Rings (6+1), 28.539 Segments
- Shoring Works 3.500 m² - Diaphragm Wall
24.900 m³ - Cement Grouting
910 m - Bored Pile
16.800 m - Anchorage
