Tunnel Excavation via NATM
• Tunnel length: 950 m – Excavation cross-section: 41.5 m² – Opening dimensions: 7 m × 6.4 m
• Cross-section after final lining: 25 m² – 600 tons of IPE180 steel rib support installed at 0.5 m to 1 m intervals
• Maximum tunnel overburden: 85 m
• Systematic rock bolting in areas prone to unstable wedge failure
Project Location
East Azerbaijan
Client
Industries and Mines Technical and Engineering Services Company (Kani Mes)
