Tideway breakthrough links all three tunnel sections

Aaron Morby 2 months ago
Share

Thames Tideway tunnellers have achieved a significant milestone linking up all three sections of the super sewer project for the first time.

West main tunnel connection breaks into the Central section
West main tunnel connection breaks into the Central section

The key tunnel link was achieved at the Carnwath Road Riverside site in Fulham with the breakthrough of the West main tunnel connection into the Central section.

A special 75m connection tunnel has been constructed to join these two sections. Originally the plan was for TBM Millicent to break through into the shaft at Carnwath Road.

But this was deemed to be too disruptive to the TBM Rachel drive so the decision was taken to turn and bury TBM Millicent before the final shaft and dig the final connecting section.

The final connection between the sprayed concrete lined tunnel and the segmental tunnel involved the West section team carefully breaking out the precast tunnel segments and forming an enlargement around the segmental interface ring.

Prior to the works starting the team carried out a full scale trial of the connection to ensure that the they could achieve the quality required.

Works on the connection tunnel started in January this year and have now achieved the breakthrough.

Now 20km of the 25-km ‘super sewer’ have been constructed with secondary lining underway.

TBM Selina is tunnelling the final section from Chambers Wharf in Bermondsey to Abbey Mills Pumping Station.

 

Latest news

Akela Group moves into England with new Leeds hub

Scottish civils contractor looks to boost business by 10% with move south of the border
5 hours ago

Three brickies fall through stairwell on St Modwen Homes site

House builder fined £200,000 after trio suffer serious injuries falling 2.5metres through temporary cover
6 hours ago

Sellafield plans £3bn infrastructure delivery partnership

Morgan Sindall/Arup alliance to be replaced by three delivery partners
13 hours ago

Billington cheered by big shed and infrastructure job surge

Steelwork specialist reports challenging market as main contractor clients squeezed by inflationary pressure
12 hours ago

Bid race starts for £1.6bn Pagabo civils framework

New civils framework will be split into four project-size lots
1 day ago

SEGRO to start £300m futuristic food production hub

Advanced 1.8m sq ft food growing facility planned near Derby
13 hours ago

First contractor fined after 316,000 HSE Covid spot checks

One prosecution so far following blitz of workplace Covid spot checks during pandemic
1 day ago

Ten fire crews tackle blaze at Hinkley

Temporary building on giant construction site goes up in flames
13 hours ago

Fusion21 refreshes consultants framework

Firms expected to support around 100 projects a year
12 hours ago

Builders’ merchants merge to create 123-branch chain

Independent Builders Merchant Group territory now extends from Corwall to Kent
1 day ago

Digger topples into trench on Costain M6 job

Driver in lucky escape after 13t excavator upends in central reservation drainage trench
2 days ago

Inquiry starts into construction of Scottish hospitals

Focus on construction problems at two major hospital sites
2 days ago

Thompsons blow down iconic Dorman Long tower – video

Controlled explosions bring down four Redcar steelworks structures at once
1 day ago

Manchester crane driver rescued after falling ill in cab

Emergency services lower stricken operator in a stretcher from tower crane cab
2 days ago

Taylor Wimpey MD joins Weston Homes

Peter Gore to oversee delivery of £2bn work pipeline
2 days ago

Henry Construction to build £32m Ealing resi scheme

Financing deal paves way for start on 14-storey scheme
5 days ago

Bourne hires new engineering director

Steelwork contractor appoints Denis McNelis to broaden its reach
2 days ago

50 firms win £3.6bn National Highways renewals deal

Morgan Sindall, Eurovia and Osborne win super regions civils
5 days ago

McLaren wins new Aston Martin F1 factory race

£200m development near Silverstone will take 18 months to complete
5 days ago

Kent Council seeks four partners for £500m pipeline

Council drops 17-supplier framework to partner with just four contractors
5 days ago

Robertson set to seal £150m Cardiff Arena deal

Cabinet to sign off contractor and business case for construction start next spring
5 days ago

VolkerFitzpatrick wins £82m Hull turbine blades factory

Deal to upgrade and build two more factories follows on from job five years ago
5 days ago

Lorne Stewart battles to return to profit

Harrow-based M&E group begins to curb losses
5 days ago

Kier returns to profit after two-year turnaround

Contractor makes £5.6m after £225.3m loss last time
6 days ago

Galliford Try returns to profit with margin at 2%

Order book swells to £3.3bn with 90% of work in place for 2022
6 days ago

Fire hits £120m Tolent Milburngate site

Blaze breaks out behind cavity wall as site evacuated
6 days ago

Roof tile maker Marley to float on stock market

Private equity firm unveils plan to take Britain's largest roof tile maker public
6 days ago

Plans in for Lancashire 1,700 inmate prison

Seven houseblock HMP Wymott 2 planned near Leyland
6 days ago

Michael Gove named new housing secretary

Gove replaces Robert Jenrick in Cabinet reshuffle
6 days ago

Redrow happy for staff to keep working from home

House builder says staff can work "where they are most efficient"
6 days ago

Contractor services