Crossrail's western ticket hall excavation reaches track level at Tottenham Court Road
By Tom Lawson
Excavation at Crossrail’s Tottenham Court Road western ticket hall in Soho has now reached track level, equivalent to seven storeys below ground.
Crossrail’s contractor, BFK, has removed 35,000m3 of soil from the site at Dean Street over a six month period – enough to fill all three Olympic swimming pools in the London Aquatics Centre three times over.
This short time lapse video shows the temporary “propping” of the station box walls as excavation continues to a depth of 30 metres.
Excavation has taken place 24 hours a day, 7 days a week with the team employing a number of excavation techniques including normal excavators, long arm excavator, gantry crane and hydraulic grab to suit the ever increasing depth.
Work has now begun creating the 1.8 metre thick base slab for the ticket hall. Sprayed Concrete Lining (SCL) works will soon begin to prepare the station box to receive the tunnel boring machines, on their journey from Royal Oak (west of Paddington) to Farringdon.
Gallery - construction progress at Tottenham Court Road western ticket hall, April - September 2012