Work: CAÑIZO V.I. TUNNEL
Client: JV ASSIGNIA-COPCISA-VELASCO

New Spanish High Speed Line (AVE) connecting Madrid with Galicia. The project relates to the Tunnel Execution of 5,350 meters of excavation with a 74sqm section. The geological profile of the tunnel is complex and differentiates between two areas: hard granite areas of approximately 3,900 meters and another of weathered slates areas of approximately 1,450 m.

Drilling and blasting were used on excavation, as well as, backhoe loader equipped with a hydraulic hammer for the specific granite area, which thereafter was supported by gunite in several layers. The slates zone also requires the placement of TH-29 and HEB-160 metal trusses in every meter of excavation.

There are also several connection galleries with the parallel tunnel, every 400 meters.

Teams of CIVILSUB are conducting the excavation and supporting the execution of the tunnel, in both excavation portals.