Caroline TBM can travel at an average of 14m per day. Credit: High Speed Two. High Speed Two (HS2) has rolled out the fifth tunnel boring machine (TBM), known as Caroline, for the construction of ...

HS2 celebrates launch of TBM for second tunnel bore under Long Itchington Wood in Warks. Credit: High Speed Two Ltd. UK-based High Speed Two (HS2) has launched the 125m tunnel boring machine (TBM), ...

The 2.1-mile Colne Valley viaduct is about a third complete. Photo courtesy of HS2 Ltd. December 28, 2023 With its workforce now peaking at around 30,000, the U.K.'s London-Birmingham 140-mile HS2 ...

A specialized team assembles a colossal 1,600-metric-ton machine to excavate Birmingham's Bromford Tunnel for the HS2 project. This giant tunnel boring machine (TBM), following 'Mary Ann,' embarks on ...

Pictures show HS2 launching a 316-tonne machine component that will dig its way under west London. A crane was seen lowering part of the massive Tunnel Boring Machine (TBM) into the ground, with HS2 ...

Four giant tunnelling machines working below west London have completed the excavation of the 8.4-mile (13.5km) Northolt tunnel between West Ruislip and a new station at Old Oak Common as part of the ...

The largest tunnelling machine ever used on a UK rail project has completed its 10-mile (16km) journey after nearly three years. Florence - named after Florence Nightingale - has cut through the chalk ...

The milestone was achieved using one of four giant tunnelling machines being deployed to build the railway’s Northolt Tunnel. The tunnel boring machine (TBM), named Caroline, is the second machine to ...

Tunneling on the U.K.’s 230-km London-Birmingham high-speed railroad launched May 13, as a 10.26-meter-dia tunnel boring machine (TBM) began work at the Chiltern Hills southern approach, about 30 ...

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Balfour Beatty Vinci (BBV), a UK/France-based construction and infrastructure services joint venture (JV), announced its 1,600-tonne tunnel boring machine (TBM) – named Elizabeth – has started digging ...