bertha the world 039 s largest tunneling machine

  • Bertha, the world's biggest tunneling machine ... - CityMetric

    Meet Bertha: Bertha is the world's largest tunnel boring machine. She weighs 7,000 tons and, at 17.5 metres tall, is roughly the height of a three storey house.

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  • bertha world's largest tunneling machine

    bertha world's largest tunneling machine. We are the manufacturer of coal mining machine,roadheader,coal loader,tunnel mucking loader,backfilling machine,concerte pumping machine and so on. bertha world's largest tunneling machine manufacturer, supplier.

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  • Watch Bertha, the world's largest tunnel boring machine ...

    Watch Bertha, the world's largest tunnel boring machine, ... The tunneling phase of the project began in July 2013 but was soon plagued by a two-year delay ...

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  • Big Bertha: World's Largest Tunneling Machine To Be Rescued

    Big Bertha, the world's largest tunneling machine, is currently at rest underneath Seattle, yet engineers have devised a way to re-animate the stranded behemoth.

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  • bertha tunneling machine - danceemporium.org

    The World's Largest EPB Shield Tunneling Machine | … The world's largest shield tunneling machine was officially named Bertha on December 20, 2012.

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  • The World's Largest Tunnel-Boring Machine Must Be Saved

    The World's Largest Tunnel-Boring Machine Must Be Saved. Bertha has stalled deep beneath Seattle, ... What do you do when the world's largest tunneling machine is, ...

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  • The World's Largest Tunneling Machine Is (Finally) Getting ...

    Bertha, the world's largest tunneling machine, has been stuck under downtown Seattle since it broke in December 2013. Engineers have had to concoct a massive and expensive rescue plan—essentially a whole construction project in itself.

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  • Bertha – The World's Largest Tunnel Boring Machine - GeoPrac.net

    Perhaps you've heard of Bertha, the World's Largest Tunnel Boring Machine or TBM? She's currently working her way underneath Downtown Seattle, excavating the Alaska Way Bored Tunnel to replace the aging Alaska Way Viaduct.

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  • We Finally Found What's Blocking The World's Largest ...

    Bertha, the world's largest tunneling machine, churning through the rock and mud beneath Seattle, has hit a mysterious roadblock—so mysterious, it is only known for now as "the object."

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  • world's largest tunnel-boring machine

    world's largest tunnel-boring machine . ... The last piece of Bertha, the world's largest tunneling machine, has been removed from Seattle's SR 99 tunnel, ...

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  • Big Bertha, world's largest tunnel-boring machine, arrives in ...

    The "Big" in Bertha's name isn't there for the catchiness. It's there because it's apt. With a 57-foot diameter and a length of a football field, Big Bertha is the world's largest tunnel-boring machine.

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  • bertha world's largest tunnel-boring machine

    bertha world's largest tunnel-boring machine. We are the manufacturer of coal mining machine,roadheader,coal loader,tunnel mucking loader,backfilling machine,concerte pumping machine and so on. bertha world's largest tunnel-boring machine manufacturer, supplier.

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  • Seattle's Big Bertha Tunneling Machine Is Finally Back on Track

    We've covered the saga of the SR99 tunneling machine, better known as Bertha, since it broke down after only drilling though just 52 feet in three days of operation. Now the Seattle tunnel boring machine is finally back on track. It just broken through an access repair tunnel and has since mined 73 ...

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  • Tunnel boring machine - Wikipedia

    A tunnel boring machine ... This is because tunneling with TBMs is much more efficient and results in shortened completion ... The world's largest hard rock TBM, ...

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  • Animation on how Bertha, Worlds Largest Tunneling Machine ...

    reddit: the front page of the internet ... Worlds Largest Tunneling Machine, works. Bertha is currently being blocked by an "object" in Seattle, WA. (youtube.com)

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  • World's biggest tunnel machine Bertha emerges from ... - Autoblog

    Bertha, the world's largest tunnel-boring machine, ends its journey today. It has spent four years traveling less than two miles to build a new car tunnel underneath Seattle.

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  • Gizmag goes inside the world's largest tunnel boring machine

    On Saturday,the world's largest tunnel boring machine was dedicated in the city of Seattle. "Bertha," as it's known, will spend the next 14 months boring a 1.7 mile (2.7 km) tunnel under the city to replace a viaduct damaged in a 2001 earthquake.

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  • The World's Largest Tunnel-Boring Machine | Popular Science

    The World's Largest Tunnel-Boring Machine. ... the world's largest-diameter tunnel-boring machine. ... Bertha is digging the 1.7-mile tunnel by advancing at an ...

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  • bertha world's largest tunneling machine - danceemporium.org

    The World's Largest EPB Shield Tunneling Machine | … The world's largest shield tunneling machine was officially named Bertha on December 20, 2012.

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  • Bertha (tunnel boring machine) - Wikipedia

    Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and is the world's largest earth pressure balance tunnel boring machine, at a cutterhead diameter of 57.5 feet (17.5 m) across.

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  • Alaskan Way Viaduct - Tunneling

    The tunneling machine known as Bertha began tunneling beneath Seattle in July 2013 (photo at right: ...

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  • Sand Grinds World's Largest Tunneling Machine To A Halt

    Sand Grinds World's Largest Tunneling Machine To A Halt Bertha, which got stuck digging a Seattle highway tunnel, is 60 feet below ground and can't move forward — or backward.

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  • The World's Largest EPB Shield Tunneling Machine | Hitachi ...

    Manufacturing & Engineering Hitachi Zosen Corporation. ... The world's largest shield tunneling machine was officially named Bertha on December 20, ... Bertha, the ...

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  • World's largest tunnel-boring machine finally breaks through

    SEATTLE — The world's largest tunnel-boring machine broke through a concrete wall beneath Seattle on Tuesday to reach the end of its long, troubled...

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  • Bertha The World's Largest Tunneling Machine - Video Results

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