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Road and railway tunnels
• escavation and tunnel lining by using up to date technologies
• insulation operations
• lining
• tunnel portals
• illumination
• automation
• ventilation
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Sites
Sites in Bulgaria
- Trayanovi Vrata road tunnel, Trakiya highway - cross-section of 86 sq.m, length
1400 m;
- Vitinia road tunnel, Hemus highway - cross-section 86 sq.m, length of 2250 m;
- Dragan Tsankov, Sofia underground tunnel - cross-section of 74 sq.m, length of
800 m;
- Two-way metro tunnel in Sofia, fully completed, length of 1200 m;
- Widening and repairs of railway tunnels - lining, water insulation, etc.
Sites abroad
- Driving metrotunnels in Munich, Germany
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