HS2 lifts third giant tunnelling machine in London after 3.4-mile underground journey

On Saturday 26th July, the team working on the HS2 project lifted the TBM’s 9.11metre diameter cutterhead, front and middle shield, weighing 880 tonnes, using a large gantry crane. The tunnelling machine concluded its 3.4-mile journey from Victoria Road in Ealing in June, arriving in an underground reception chamber. TBM Emily excavated 775,000 tonnes of London Clay and installed […]