Excavation of HS2’s longest tunnel has been completed after a second machine reached the end of its 10-mile journey from a site near Maple Cross. The tunnel will be used for HS2 trains travelling between London and Birmingham.
Excavation of HS2 ’s longest tunnel has been completed after a second machine reached the end of its 10-mile journey from a site near Maple Cross. It was one of two tunnel boring machine s (TBMs) digging a twin-bore tunnel with a depth of up to 80 metres that will be used for HS2 trains travelling between London and Birmingham . The other TBM, named Florence, broke through last month. Both began their journeys at HS2 's south portal site near the M25 and Maple Cross.
Cecilia, named after Buckinghamshire-born astronomer and astrophysicist Cecilia Payne-Gaposchkin, was launched in June 2021. This was two months later than Florence, named after Florence Nightingale, the founder of modern nursing. HS2 Ltd said each machine operated as an “underground factory” with crews of around 17 people working in shifts to keep them running constantly
HS2 Tunnel Excavation Tunnel Boring Machine London Birmingham
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