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Thread: Tunnel boring machine hits sewage line - GIFs

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    Altair's Avatar
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    Tunnel boring machine hits sewage line - GIFs

    Tunnel boring machine hits sewage line in Sao Paulo, Brazil.






    Previously:

    Tunnel boring machine cutter head - video
    Turning a tunnel boring machine shield around - GIF
    Vintage tunnel boring machine - GIF
    Tunnel boring machine breaking through - GIF
    Snake arm robot for inspecting tunnel boring machine - GIF

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    durrelltn (Jun 4, 2022), mwmkravchenko (Jun 5, 2022), nova_robotics (Jun 3, 2022)

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    Supporting Member Karl_H's Avatar
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    The guy runs to safety and misses the shot - obviously not a young kid.

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    mwmkravchenko (Jun 5, 2022)

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    Supporting Member batchit's Avatar
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    Classic, "That just turned to **** moment."

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    mwmkravchenko (Jun 5, 2022)

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    Supporting Member mwmkravchenko's Avatar
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    Altair (Jun 5, 2022)

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    Supporting Member Hoosiersmoker's Avatar
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    "We were only off by 2 degrees (3 miles back)"
    "Divided We Stand, Together We Rise!" - (From "White Feather") - Marillion

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    Supporting Member mwmkravchenko's Avatar
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    Quote Originally Posted by Hoosiersmoker View Post
    "We were only off by 2 degrees (3 miles back)"
    The terrible thing is that even less is most likely the cause. In downtown Ottawa they were boring a tunnel for light rail and they hit a water main. The news called it a cave in / sinkhole. I had friends that were involved in the fix. Every available cement truck was dumping into this hole for over a day. Guaranteed that the lump of cement cracked and overheated. To big to pour without cooling. But all they wanted was something solid to core a hole through.

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    Quote Originally Posted by Hoosiersmoker View Post
    "We were only off by 2 degrees (3 miles back)"
    In support of the engineers, 2 degrees off 3 miles back would be a deviation of 553 feet.

    Just 2 seconds off 3 miles back (60 seconds to a minute and 60 minutes to a degree) would be about 2 inches off (1.841 inches.)

    Pretty amazing what they are able to do.



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    mwmkravchenko (Jun 11, 2022)

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