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UK: Unique HS2 tunnel portal completed to solve high-speed rail’s ‘sonic boom’ conundrum

    Kris Lubcek
    By Kris Lubcek

     

    About the interesting design feature of HS2 tunnel portals at the HS2 Project (High Speed 2) group :

    https://tunnelcontact.com/discussion/view/62582/unique-hs2-tunnel-portal-completed-to-solve-high-speed-rail%E2%80%99s-%E2%80%98sonic-boom%E2%80%99-conundrum

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    Tunnel Technologies

    Tunnel Technologies

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    cover tunnel photo by: Matt Brown from London, England / CC BY

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