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  Ryfast

    Ryfast is a chain of subsea tunnels in the southwest of Norway. Ryfast tunnels connects Stavanger (the fourth largest city in...the other side of the Boknafjord. Ryfast consists of two tunnels: Ryfylke Tunnel: It lie...

  1565 days ago

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  Conventional Tunnelling versus Mechanized Tunnelling

  ...be prepared for additional days lost before the operation). Conventional Tunnelling is, in general, still accepted as the effective method for tunnels shorter than 4 kilometers in...

  426 days ago

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  How much does a Tunnel Boring Machine (TBM) cost?

  ...er diameters, the price per meter in diameter will be more than US$1m. Especially for the large diameter TBMs used for multi-level, multi-lane tunnels, increase per-meter will be m...

  129 days ago