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Home > Crossrail constructs 1000th ring

Crossrail constructs 1000th ring

Written by Tris Thomas on 05/12/2012 in News

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Crossrail’s first TBM, Phyllis, has constructed her 1000th tunnel ring under London’s Hyde Park. It comes as the Crossrail project completes excavations for Tottenham Court Road’s western ticket hall at Dean Street, starts excavation for Bond Street station’s western ticket hall in Davies Street as well as continued progress at Paddington.

The first of eight Crossrail TBMs, Phyllis, is currently tunnelling under Hyde Park after completing her 1000th tunnel ring and has now constructed 1800m of tunnel from Royal Oak via the Paddington station box.

Crossrail’s second TBM, Ada, has travelled 800m and has entered the station box at Paddington after successfully passing under the national rail lines into Paddington station. A total of 12,000 concrete segments, manufactured at Old Oak Common, have now been used to construct the western tunnels between Royal Oak and Farringdon.

At Tottenham Court Road, the base concrete slab has been installed for Crossrail’s western ticket hall at Dean Street. The contractor – Bam, Ferrovial, Kier (BFK) – is now preparing the site to begin construction of the mined tunnels that will connect the ticket hall to the station platforms. The spray concrete lining tunnel works will begin in early 2013.

The new western ticket hall at Bond Street will be five storeys deep and is one of two new Crossrail ticket halls that will be constructed at Bond Street ahead of Crossrail services commencing in 2018.

More than 42,600 cubic metres of soil will be excavated to construct the new ticket hall, passages and platforms. The excavated material will be transported to a new RSPB nature reserve at Wallasea Island in Essex.

Excavations of two shafts for the eastern ticket hall at Hanover Square were completed last month and work will soon begin on the station platform tunnels.

Diaphragm walls are continuing to be installed in Eastbourne Terrace to construct the outline of the Paddington station box before excavations start next spring. The installation of these panels has been carefully sequenced to allow the tunnel boring machines to travel through.

Keith Sibley, Crossrail Area Director West said: “Crossrail continues to make good progress in central London. Our first tunnel boring machine, Phyllis, is currently under Hyde Park and will arrive at Bond Street in early 2013. Construction of the new stations at Bond Street, Tottenham Court Road and Paddington is advancing with the progress becoming increasingly visible. From 2018, 24 trains an hour will pass through these stations during peak hours bringing an extra 1.5 million people within 45 minutes of Paddington and the West End.”

Finally, excavations also have started at the Fisher Street shaft at Holborn after the completion of piling works. The shaft will eventually provide future maintenance access to the Crossrail tunnels.

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