largest tunnel boring machine

largest tunnel boring machine

  • 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

  • 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 …

  • 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 ...

  • 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 …

  • 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.

  • 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 ...

  • 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.

  • 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

  • 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.

  • 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.

  • 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 ...

  • 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,

  • 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...

  • 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...

  • 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

  • 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

  • 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 ...

  • 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 …

  • 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

  • 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

  • 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

  • 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

  • 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 ...

  • 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.

  • 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 …

  • China's largest tunnel boring machine completed | Daily Tribune

    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 in China.

  • China’s largest tunnel boring machine completed | Daily

    The machine, named Chunfeng, has a diameter of 15.8 meters, making it the largest slurry TBM designed in China. It weighs around 4,800 tons and is 135 meters long. It weighs around 4,800 tons and is 135 meters long.

  • China’s largest tunnel boring machine completed | Daily Tribune

    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 in China.

  • Climb Inside the World's Largest Wind Tunnel - WIRED

    The turbines sit at the back of the tunnel; 1,400 feet away, in the front, is a screen door the size of a football field, which sucks in air from the outside, but not things like geese and NASA ...

  • Construction - Crossrail

    26 MILES OF NEW RAIL TUNNEL UNDER LONDON. Crossrail is the first complete new underground line in more than 30 years. Crossrail tunnelling began in the summer of 2012 and ended at Farringdon with the break through of tunnelling machine Victoria.

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About KAMY

KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.