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Video | Jet grouting at Victoria Tube station

Transport for London has released this video showing jet grouting in action at Victoria Tube Station.

By 2018, the Tube station will have a new ticket hall, more connecting tunnels to join the existing and new parts of the station together, a station entrance at Bressenden Place, step free access, an easier interchange with National Rail services and improved customer information.

The exisiting Victoria Line ticket hall will be extended by 50% under the £700M upgrade scheme.

The new ticket hall will remove 40% of the congestion from the South Ticket Hall and save around seven minutes walking time for passengers trying to get from the platforms to Victoria Street. The project requires 400m of new tunnels connecting the two ticket halls.

To create the tunnels, TfL is pioneering a technology whereby grout is injected into the ground under high pressure to make it more stable for the tunnels.

The grouting work, designed and planned around existing utilities, was undertaken from street level and involved excavating 3000m³ of ground by hand.

Victoria Station Upgrade Programme Manager, Glenn Keelan said: “This work was a piece of genuine construction engineering innovation, used to great effect at Victoria. The delivery of the project required continuous improvement in the face of extreme scrutiny. This is the first time we’ve used jet grouting techniques on a London Underground estate, and the finished result is a real achievement by the Victoria Station Upgrade teams.”

Victoria Underground station handles 84M passengers a year and is the second busiest in the London Underground network. It is also the most congested. The station is crossed from east to west by the District and Circle lines and from north to south by the Victoria Line.

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