stopped seattle tunnel boring machine

stopped seattle tunnel boring machine

'Mystery object' that stopped $80m drilling machine for ...

An unknown object that fascinated the country last month when it stopped the world’s most powerful tunnel boring machine digging underneath Seattle has finally been identified.

Bertha (tunnel boring machine) - Wikipedia

The tunneling machine known as Bertha began tunneling beneath Seattle in July 2013 (photo at right: the machine's cutterhead being lowered into the launch pit near Seattle's stadiums). The machine completed its tunneling on April 4, 2017 and was fully dismantled and removed from the tunnel on Aug. 23, 2017.

Alaskan Way Viaduct - Tunneling

Now the Seattle tunnel boring machine is finally back on track. It just broken through an access repair tunnel and has since mined 73 feet since December 22. ... Fortunately, the machine had not ...

Seattle's Big Bertha Tunneling Machine Is Finally Back on ...

Why Seattle's Huge Tunnel-Boring Machine Is Still Stuck A year after Bertha got stuck, plans to free the big machine have stalled. And there's another problem.

Seattle Tunnel Boring Machine -- Bertha Rescue

Inslee orders tunnel dig halted as soil sinks above Bertha ... (Ken Lambert / The Seattle Times) ... The world’s largest boring machine is currently stopped just north of Main Street.

Inslee orders tunnel dig halted as soil sinks above Bertha ...

The world’s largest tunnel-boring machine is on schedule to break into daylight this spring after a tumultuous dig under downtown Seattle that’s years behind schedule.

How did we get here? A look back on Seattle’s tunnel ...

4/4/2017 · Workers look on as the machine head of Bertha, the world's largest tunnel-boring machine, is lifted from an access pit for repairs in Seattle, Washington March 30, 2015.

Seattle tunnel, among world's biggest, takes step toward ...

Contractors building a highway tunnel under Seattle are preparing to remove the world's largest boring machine so that it can be repaired. The gigantic drill, known as Bertha, stopped working in ...

The world's biggest boring machine Bertha is taken out for ...

August 2017: Final piece of dismantled machine removed While Bertha was underground, this page tracked her progress beneath Seattle. With the machine dismantled and removed, we are now tracking tunnel progress on a new page.

Leave Your Message

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.