The tunnel boring machine was pushed using hydraulic jacks over a distance of 210 metres, 20 metres underground. To make the process more ...
Apart from the tunnel, the project also involves construction of an approach road of 10.8 km with three vertical ventilation shafts, a snow gallery of 700 ...
Engineers at the Robbins Company designed the first hard-rock tunnel-boring machine. Designing the machine's cutter head to ensure stability while ...
Work on the tunnel is currently in it's first phase, mining. A tunnel boring machine or TBM given the Hawaiian name 'Pohakulani' pierces through ...
They said unforeseen problems with the tunnel-boring machine, which created sinkholes and other complications, delayed construction by six months.
Workers stand on top of the tunnel-boring machine Bertha, looking down at the exposed ring-shaped cutter drive that will be lifted out and repaired, on ...
“Besides a tunnel length spanning 14.08 km, the project also involves construction of a 10.8-km approach road with three vertical ventilation shafts, ...
In Bend, Ore., local contractor Stadeli Boring & Tunneling had a unique set of circumstances for a new gravity sewer interceptor. The contractor had a ...
Interested companies have the opportunity to obtain the specification documents until the day of the tender.
Last weekend Seattle Tunnel Partners started filling the 120-foot-deep pit that was used to fix the broken tunnel boring machine named Bertha.
The 4.6-km-long, 6.8-m-diameter Tunnel Boring Machine (TBM) Tunnel at Intake No. 3 is the deepest sub-aqueous tunnel in the world. Arup worked ...
... short film illustrating the difference that the removal of the A303 and the construction of a tunnel of at least 2.9km long could make to the Stonehenge ...
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