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Nortúnel keeps a continuous investment policy to have updated technological advanced machinery at its disposal.





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  • Aduna Tunnel. New Railway Network in the Basque Country. Zizurkil-Andoain Section The total length of Aduna tunnel is 4.690 m. Nortúnel will carry out the excavation of 1.479 m from the Andoain entrance. The excavation section is 120 m2 and its internal section is 85 m2. An emergency gallery is also excavated whose length is 415 meters and its excavation section is 25... Read more

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    Tunnel 1. Improvement of Bogotá-Villavicencio road. Sector 3A The tunnel 11 is 412 meters long and its excavation section is 104 m2. It has been excavated in a terrace material, whose thickness was more than 90 m, by mechanical means using a backhoe excavator with a hydraulic hammer. The designed support consisted of: Micropiles umbrellas. They... Read more

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    Hernani tunnel. High-Speed Vitoria-Bilbao-San Sebastián Railway. Urnieta-Hernani section Hernani tunnel is 749 meters long, excavated in mine, with an excavation section of about 120 m2. Its spare section is 95 m2. The excavated materials are loams, calcareous mudstones and loamy limestones. The excavation is carried out by drilling and blasting in harder materials (RMR> 40) and... Read more

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    Vilavella tunnel. High-Speed Madrid-Galicia Railway. La Canda-Vilavella Section Vilavella tunnel consists of two tubes and their length is 902 meters and 869 meters. Their internal section is 52 m2. The different materials present along the tunnels are both granites and sedimentary units partially metamorphosed by the intrusion of the granites. Drilling and blasting is used... Read more

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