Latest Rail News

20.10.14

Docklands and south-east London Crossrail tunnels complete

Crossrail’s train tunnels in Docklands and south-east London are now structurally complete, following the breakthrough by tunnel boring machine Ellie at Victoria Dock Portal in east London.

Ellie had one of Crossrail’s shortest but most complex drives, 900m from Limmo Peninsula, near Canning Town, to Victoria Dock Portal. Ellie successfully navigated the Docklands Light Railway, Jubilee line and utilities, all in close proximity to the River Thames and River Lea. She completes a set of Crossrail tunnels in east and southeast London that stretch from Plumstead to Whitechapel, with an additional spur between Stepney Green and Stratford.

It was the tunnel machine’s second drive, having already completed a 2.7km stretch from Pudding Mill Lane to Stepney Green. She will now be dismantled and returned to manufacturer Herrenknecht, with the parts recycled for future projects, Crossrail says.

TBM Progress 20 October 2014 162570

Also announced today, tunnel machine Elizabeth has started the final push west from Whitechapel that will see her and sister machine Victoria complete Crossrail’s train tunnels at Farringdon next year.

Elizabeth is 60% through Crossrail’s longest drive, a distance of 8.3km from Limmo to Farringdon. She has already successfully negotiated Canary Wharf Crossrail station and Stepney Green cavern, before waiting in Whitechapel ahead of the completion of a shaft beneath Durward Street. The drive to Farringdon will reach the deepest point on the Crossrail route, approximately 40m beneath street level near the Barbican in the City of London.

Simon Wright, Crossrail’s programme director said: “The end is in sight for Crossrail’s tunnelling marathon. Having successfully delivered all bored tunnels west of Farringdon and east of Whitechapel, we now begin the final push to complete tunnelling at Farringdon next year. The next challenge is to fit out the tunnels and stations with systems to run Crossrail trains through central London in 2018.”

Each of Crossrail’s eight tunnel boring machines weighs 1,000 tonnes, is up to 150 metres long and 7.1 metres in diameter. They are staffed by teams of 20 working around the clock. Crossrail’s eastern tunnels are built by Dragados Sisk Joint Venture.


A timelapse video of Ellie breaking through into Victoria Dock Portal

Tell us what you think – have your say below or email opinion@railtechnologymagazine.com

Comments

Correct Use Of Words   25/10/2014 at 21:11

It is a railway tunnel, not a train tunnel.

RTM   27/10/2014 at 10:07

I expect you'll be similarly horrified that our style guide also allows 'train station' as an occasional variant of 'railway station'. Both are in common use in UK English and are perfectly well understood, as are both 'railway tunnel' and 'train tunnel'.

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