tunnels

Tunnels 80,000 m

- Tunneling by TBM - Conventional Tunneling (incl. NATM) - Pipe-Jacking - Cut & Cover - Shaft Sinking - Micro Tunneling

STFA has had 40 year's experience in tunneling and has completed over 80 km of tunnels built in varying soil conditions and terrain, including soft ground and hard rock strata. The company has the equipment to implement various tunneling techniques including conventional 'drill and blast', full face, road-header tunnel boring machines and pipe-jacking.

The company provides turnkey services for tunnel projects.

The scope of works:

Road Tunnels
Sewage Tunnels
Power Tunnels
Water Conveyance Tunnels
Shafts

Some of the major project undertaken:

Melen Bosphorus Crossing Tunnel (Turkey)
70% (22 km) of Istanbul sewerage tunnel network (Turkey)
15 km of tunnels in the Holy City of Makkah (Saudi Arabia)
Gandaf Hard Rock Tunnel (Pakistan)
Submarine shelters on the Black Sea coast (Turkey)
Kadıncık II HEPP Power Tunnel (Turkey)
Lakhdaria-Bouira Motorway Tunnels (Algeria)
Izmit By-Pass Motorway Tunnels (Turkey)
Several underground military shelters (Libya)
Baja Tunnel (Pakistan)





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