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largest tunnel boring machine

KAMY is the worldwide leader in manufacturing hydraulic cutters, road headers, tunnel support systems, and other specialized machinery used in the tunneling, mining, and construction industries. Through KAMY’s years of experience and innovative thinking, we can provide custom engineered solutions for nearly any project requiring rock excavation or concrete demolition.

KAMY is the leading manufacturer of roadheaders in the weight class of 13-80 tons weight. Our roadheaders offer interchangeable cutter heads, both transverse and axial and are custom engraved for each project. Our hydraulic cutters are suitable for material with uniaxial compressive strength ranging from 500 to 25,000 pounds per square inch. All of our products can be utilized in a variety of applications from rock excavation, trenching, demolition and concrete, to underwater cutting, tunneling, and scaling.

8 Massive Tunnels Being Built Right Now Under A City

Until being halted by a steel wellwater casing, the tunnel boring machine (TBM) named Bertha was digging a two-mile tunnel for the Alaskan Way Viaduct Replacement Program, repairing a double-decker highway along the Seattle waterfront that was damaged in

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A steel pipe is what brought Big Bertha, the world's

After Big Bertha, the world’s largest tunnel-boring machine, was brought to an abrupt halt on December 6th, officials at the Washington State Department of Transportation were …

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A steel pipe is what brought Big Bertha, the world’s largest

After Big Bertha, the world’s largest tunnel-boring machine, was brought to an abrupt halt on December 6th, officials at the Washington State Department of Transportation were stumped as to what ...

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Alaskan Way Viaduct - Follow Bertha

Follow Bertha Thank you for following Bertha. The SR 99 tunneling machine, nicknamed Bertha, has completed her work. For the latest tunnel progress, visit …

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Alaskan Way Viaduct - Home

Today, Kiewit Infrastructure West Co. was named the apparent-best-value contractor for the project that will demolish the viaduct, decommission the Battery Street Tunnel and reconnect city surface streets just north of the new SR 99 tunnel.

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Alaskan Way Viaduct - Home - Washington State

Today, Kiewit Infrastructure West Co. was named the apparent-best-value contractor for the project that will demolish the viaduct, decommission the Battery Street Tunnel and reconnect city surface streets just north of the new SR 99 ...

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Alaskan Way Viaduct - Tunneling

Once the tunnel opens, ... The machine completed its tunneling on April 4, 2017 and was fully dismantled and removed from the tunnel on Aug. 23, 2017.

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America's Biggest Tunnel-Boring Machine Is Stuck Beneath Seattle

Poor Bertha. North America's largest tunnel-boring machine, measuring 57.5 feet in diameter, hasn't moved more than 4 feet along its 1.7-mile route since Dec. 7. And she isn't going anywhere soon, either: Crews must now replace broken bearing seals inside

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BBC - Future - The Channel Tunnel that was never built

The ‘Chunnel’ may be the UK’s most famous underwater tunnel, but the British have been trying to dig to Europe since 1880 – and plans still remain for a second Channel Tunnel.

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Bertha (tunnel boring machine)

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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Bertha The Largest Tunnel Boring Machine

23/7/2017 · On April 4, the world's largest tunnel boring machine broke through to the open air after almost four years underground. Called Bertha, the giant digger ...

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Bertha, Seattle's SR 99 Tunneling Machine, Is Finally

2017-4-4 · Bertha has broken through. After nearly four years underground, Seattle’s beleaguered boring behemoth clawed its way into daylight yesterday, leaving a 1.7-mile tunnel behind it. And now that its job is done, workers can at last move an aging,

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Big Bertha -- world's largest tunnel boring machine

2013-12-26 · Named after one of Seattle's early mayors, the $80 million drill Big Bertha is 326 feet long, weighs 6,700 tons, and does much more than drill. John Blacksto...

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Big Bertha -- world's largest tunnel boring machine -- facing

Dec 24, 2013 · Named after one of Seattle's early mayors, the $80 million drill Big Bertha is 326 feet long, weighs 6,700 tons, and does much more than drill. John Blacksto...

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Big Bertha's Two-Mile Subterranean Journey Is

2017-1-26 · More than 150 feet below the streets of Seattle, Bertha presses on, boring a 57.5-foot diameter tunnel underneath the city. The largest tunnel boring machine (TBM) in the world when it was built, Bertha weighs a gargantuan 6,700 tons and stret

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Big Bertha's Two-Mile Subterranean Journey Is Almost Over

More than 150 feet below the streets of Seattle, Bertha presses on, boring a 57.5-foot diameter tunnel underneath the city. The largest tunnel boring machine (TBM) in the world when it was built, Bertha weighs a gargantuan 6,700 tons and stretches 326 fee

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

With a 57-foot diameter and a length of a football field, Big Bertha is the world’s largest tunnel-boring machine. She’s quite hefty too. Bertha is assembled from 41 parts, the largest of ...

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Big, Bigger, BIGGEST! 3 MASSIVE MACHINES that

4/27/2015 · Big, Bigger, BIGGEST! 3 MASSIVE MACHINES that move (and work!) (World’s biggest / largest ever built!) NASA CRAWLER-TRANSPORTERS: The NASA crawler-transporters are …

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Bouygues Construction uses world's two largest tunnel

Bouygues Construction uses world's two largest tunnel-boring machines on project in China Bouygues Travaux Publics, a Bouygues Construction subsidiary, has started excavation of a twin-tube tunnel in China, using the world’s two largest tunnel-boring mach

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BUILDING BIG: Glossary - PBS: Public Broadcasting

Glossary. Abutment - the outermost end supports on a bridge, which carry the load from the deck. Aluminum - a lightweight chemical element (Al); the most abundant metallic element in the Earth's crust

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BUILDING BIG: Glossary - PBS: Public Broadcasting Service

Glossary. Abutment - the outermost end supports on a bridge, which carry the load from the deck. Aluminum - a lightweight chemical element (Al); the most abundant metallic element in the Earth's crust

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CBBT About Us - CBBT Chesapeake Bay Bridge Tunnel

Latest News CBBT Announces Winning Name for the Parallel Thimble Shoal Tunnel Project's Tunnel Boring Machine CAPE CHARLES, VA – The Chesapeake Bay Bridge-Tunnel (“CBBT”) and its partners on the Parallel Thimble Shoal Tunnel Project are excited to announc

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CBBT History - Chesapeake Bay Bridge–Tunnel

Latest News CBBT Announces Winning Name for the Parallel Thimble Shoal Tunnel Project's Tunnel Boring Machine CAPE CHARLES, VA – The Chesapeake Bay Bridge-Tunnel (“CBBT”) and its partners on the Parallel Thimble ...

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Chicago picks Elon Musk's Boring Company to dig tunnel

Elon Musk’s Boring Company will build a high-speed tunnel link between downtown Chicago and O’Hare Airport that would ferry passengers in just 12 minutes.

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China's largest homemade slurry tunnel boring machine

29/9/2018 · China's largest slurry tunnel boring machine (TBM) rolls off the production line in Zhengzhou, capital of central China's Henan Province, Sept. 29, 2018. The machine has a diameter of 15.8 meters, making it the largest slurry TBM designed …

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