Tag: tunnel boring machine

    Niagara Tunnel on target for December 2013 opening

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    From the Niagara Falls Review:

    At $1.6 billion, it’s one of the biggest construction projects ever in Niagara. And in just more than a year, it should be done.

    The Niagara Tunnel Project will help carry more water from the upper Niagara River to the Sir Adam Beck generating station, providing enough hydroelectricity to power 160,000 homes each year.

    It was originally supposed to be completed at the end of 2009, but that date along with the initial $1-billion cost figure ($600 million for the tunnel itself), went out the window when Big Becky, the world’s largest hard rock tunnel boring machine, ran into tougher-than expected rock conditions along the 10-kilometre route.

    The tunnel boring wrapped up in May 2011 and now the work being done is to line the 14.4-metre-diameter walls with concrete.

    World’s largest tunnel boring machine finishes drilling under Niagara Falls

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    From the Canadian Press:

    Amid much fanfare, rubble and dust, the world’s largest rock tunnel boring machine made a breakthrough deep below Niagara Falls, Ont., Friday and finally saw the light of day.

    The massive, 4,000-tonne machine, called Big Becky, had been boring a 10.2-kilometre long, 14.4-metre high tunnel under the city since 2006.

    Crowds of workers, politicians, executives and students cheered when, after 45 minutes of drilling, falling rocks gave way to the giant boring machine.

    “At the outset the challenge was, in a word, intimidating,” said Premier Dalton McGuinty, who was on hand for the event.

    “Lots of people from lots of places have gone over the Falls in barrels, only Ontarians have gone under them.”

    Big Becky to surface this spring

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    From the Niagara Falls Review:

    After four years of underground burrowing, Big Becky is about to surface near Niagara Falls.

    Big Becky is the nicknmame of the tunnel-boring machine digging a 10-km tunnel under the city of Niagara Falls that will bring more water to the Sir Adam Beck hydroelectric generators.

    “If all goes well, we’ll be breaking through the other side in April,” said Tom Mitchell, president of Ontario Power Generation, the provincially owned company responsible for producing electricity.

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