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Experience

List Map

Hernani Tunnel. LAV (Y Vasca) Section: Urnieta – Hernani

The Hernani tunnel has a mine length of 749 m with an excavation section of some 120 m². It’s free section is 95 m². The materials that were cut through […]

Tunnel 11. Improvements to the Bogotá – Villavicencio Highway. Sector 3A

Tunnel 11 has a mine length of 412 m with an excavation section of some 104 m². Excavation has taken place along the terrace with thickness that exceeds 90 m, […]

Olabarrie Tunnel. LAV (Y Vasca) Section: Durango – Amorebieta

The Olabarrie tunnel has a length of 986 m. It is a two-way tunnel with an 85 m² type section. The excavation takes place with perforation and blasting using mechanical […]

Urzelai Tunnel. LAV (Y Vasca) Section: Durango – Amorebieta

The two-way Urzelai tunnel has a 95 m² type section and a length of 575 m. This tunnel affects the cretaceous materials, both in the CLu formation (black lutites and […]

Les Fosses Tunnel. L’Eix transversal split. C-25 Highway

Tunnel with a length of 453 m with an excavation section of some 84.47 m². Completed following the NATM, via blasting and mechanical means (backhoe) on fractured granite.

The Murón Tunnel. Levante High Speed Train Access (AVE). Section: Aspe – El Carrús

Tunnel with a length of 1,456 m with an excavation section of some 120 m². Completed following the NATM, via blasting and mechanical means (backhoe) on cemented conglomerates, clay and […]

Amaña and Katillu Tunnels. Eibar N-634 (Phase 3) link road

Tunnels with a length of 225 and 165 m with an excavation section of some 150 m². Excavation with blasting and mechanical means (backhoe) on flysch type rock (rocks-loams-sandstone).

San Andrés LAV (Y Vasca) Tunnel. Section: Durango – Amorebieta

The San Andrés tunnel is suitable for 653 m, with a 95 m² free section. Completed using conventional measures, via perforation and blasting on lutite and sandstone rocks. The supports […]