Crossrail Ltd. - TfL
Bam Ferrovial Kier BFK
— October 2015
Design of the primary sprayed concrete linings and excavation stability including depressurisation/dewatering. 3D FE modelling of all SCL tunnels including excavation steps.
Farringdon station is situated at the heart of London's rail network and will be one of its major rail interchange stations, which will link Crossrail, Thameslink services and London Underground trains. The station layout includes two ticket halls, two escalator inclines, two platform tunnels, connecting cross passages, concourse tunnels and ventilation adits. The chosen tunnelling system for Farringdon Station was sprayed concrete lining (SCL). The station comprised a total of 1km of SCL tunnels at depths of up to 35m below ground level and excavation cross-sections varying from 25m² to 110m².
From the ground surface to the bedrock the geology comprised made ground, river terrace deposits, followed by London Clay, Lambeth Group formation, Thanet Sands and chalk.