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    • TheBlacksmith posted
    Posted in News » Melbourne Metro rail: Tunnels to go deeper underground to keep trams running

    It is almost as if the planners have no idea of modern tunnel boring methods. When it was first announced as a cut'n'cover job I wondered why they would not go deeper and do it all with TBMs. I am no civil engineer, but I do read enough to know that modern TBMs can do a faster and cheaper job than CNC, despite their higher initial outlay.

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    Edited 24 Oct 2015 11:48, 6 years ago, edited by TheBlacksmith

    It is almost as if the planners have no idea of modern tunnel boring methods. When it was first announced as a cut'n'cover job I wondered why they would not go deeper and do it all with TBMs. I am no civil engineer, but I do read enough to know that modern TBMs can do a faster and cheaper job than CNC.