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Caverns

Nortunel > Activity > Tunnels > Caverns

Caverns

Large dimensional excavations, on many occasions in difficult and demanding situations, such as urban works. Nortúnel taken part in the construction of various sections of the Bilbao metro system, including excavation, support and final coating of the caverns at various stations with architectural finishes, and the use of heavy shearers for excavation.

Related projects

Line 3 Bilbao Metro. Etxebarri – Txurdinaga Section.

Completion of 2180 m of two-way tunnels on Line 3 of the Bilbao Metro between Etxebarri and Txurdinaga, with two cavern stations and the corresponding access cannons and lift shafts, […]

Line 2 F.M.B. Portugalete – Santurce Section

Completion of 1,699 m of two-way tunnels on Line 2 of the Bilbao Metro between Portugalete y Santurce with two cavern stations and the corresponding access cannons and lift shafts, […]

Line 2 F.M.B. Sestao – Portugalete Section

Completion of 1,761 m of two-way tunnels on Line 2 of the Bilbao Metro between Sestao y Portugalete with two cavern stations and the corresponding access cannons and lift shafts, […]