Northern Line Extension TBMs placed for March drive

Aaron Morby 5 months ago
Share

The London Northern Line Extension twin tunnel boring machines have been lifted into place 20m below ground in Battersea, ahead of tunnelling starting in March.

northern-line-extension-lowering-of-the-tunnel-boring-machines

TBMs were named in honour of the first British astronaut, Helen Sharman, and British aviation pioneer, Amy Johnson

The precision operation required a huge 750-tonne crane to lift TBMs Helen and Amy into the station box in the shadow of London’s iconic Battersea Power Station.

The two TBMs will create two 3.2km underground tunnels to extend the Charing Cross branch of the Northern line from Kennington to Battersea Power Station, via Nine Elms Station.

Joint venture contractors Ferrovial Agroman/Laing O’Rouke expect to complete tunnelling within six months. The extension, targeted for completion in 2020, is the first major Tube line extension since the Jubilee line in the late 1990s.

Both tunnelling machines will now be fully assembled within two 77m long launch tunnels, before starting their journeys towards Kennington next month. When fully assembled, Helen and Amy will each be 100 metres in length.

tfl-image---northern-line-extension-lowering-of-the-tunnel-boring-machines_32535495080_o

After both tunnel boring machines and their gantries are constructed, a conveyor system will be built to take the spoil from the tunnels up to barges on the River Thames.

More than 300,000 tonnes of earth will be excavated by Helen and Amy in this way before the spoil is taken to Goshems Farm in East Tilbury, Essex by boat where it will be used to create arable farmland.

Latest news

Hotel contract row forces Primus into CVA

Contractor set up by former Multiplex boss Martin Tidd faces cash flow crisis
2 hours ago

Manchester’s tallest building set for green light

Allied London's most ambitious scheme so far set for approval
4 hours ago

Morgan Sindall hunts top talent at virtual jobs fair

Construction & Infrastructure division takes careers event online to boost diversity
34 mins ago

Landmark VAT ruling on student rooms projects

Tax tribunal overturns HMRC’s VAT policy on student accommodation
3 hours ago

Grenfell cladding fire test verdict due next week

Government slashes estimate of residential blocks at risk from 600 to 208
2 hours ago

£100m East Riding prison gets green light

Category C jail to be built next to HMP Full Sutton, near York
2 hours ago

GSK scraps £350m Cumbria pharma plan

Pharma giant will invest extra £140m existing facility expansion
3 hours ago

Specialists land first trade packages at huge Berkeley site

Main construction starts on 88-acre Southall Waterside site
17 hours ago

Electrification plans scrapped on three major rail routes

Contracts worth millions axed as Government switches focus to new train technology
18 hours ago

Project delays dent Clugston results

Contractor confident about future prospects following a "challenging" year
22 hours ago

UK drags Skanska Europe into £40m loss

Skanska chief aims to cut operational costs and tighten risk management
1 day ago

McLaren set to bag £45m Lakeside extension

Contractor beats off McAlpine, ISG and Sisk to take Essex retail deal
1 day ago

Demand grows for immediate revamp of building regs

Local council chief attacks BRE, contractors and manufacturers for not sharing previous fire test results
1 day ago

Canary Wharf Contractors pays £11,000 tax on £70m profit

Company offsets £13.9m Corporation Tax bill against losses at other group divisions
1 day ago

Mount Anvil plans 1,000 flats in London Royal Docks

Deal with London ExCel centre paves way to build block of apartments
1 day ago

Consultant RLB stages mass raid on Mace managers

Five senior figures jump ship to join rival
2 days ago

Ministers reject client levy option in Farmer Review

Government backs most calls for reform but stops short of 0.5% charge on clients
2 days ago

Construction and fit out boost profits at Morgan Sindall

Contractor bucks recent sector trend by telling City to expect higher than predicted profits
2 days ago

Lendlease ordered to pay £14.8m for city tower falling glass

Cladding contractor to pick up bill after 15-foot glass pane fell from 17th floor
2 days ago

Civil engineers act to avert Grenfell-style disasters

ICE launches review of lessons from tower tragedy to avoid infrastructure failures
2 days ago

Man killed in derelict church collapse

Tragedy at Cardiff site where old church was being demolished
2 days ago

CH2M and BDP to lead revamp of Parliament

Firms to assess scale of work needed ahead of potential £4bn restoration
2 days ago

Wates southern boss joins Midas

Peter Whitmore charged with growing turnover in the south to £100m
2 days ago

Willmott Dixon wins £24m laser testing centre

Another major win for contractor at Harwell Science Campus
2 days ago

HS2 confirms shortlists for new stations

Design teams battle to win trio of stations as development partners fight for major Euston site
3 days ago

Willmott Dixon starts redundancy talks as divisions merge

Contractor confident most housing staff will be redeployed during merger into main construction arm
3 days ago

Tower crane drivers hold ballot over summer strikes

Unite warns of widespread project delays as dispute with HTC Wolffkran intensifies
3 days ago

Government confident Carillion JV will deliver HS2 deals

Rail chiefs seek guarantees from joint venture partners
4 days ago

Site start next month for £70m Broadgate revamp

Facelift for 1 Finsbury Square as tech firm Mimecast set to move in to financial hub
3 days ago

Torsion keeps growing on back of contract winning streak

Turnover set to hit £38m as staff numbers rise to 71
3 days ago

Contractor services