Tideway breakthrough links all three tunnel sections

Aaron Morby 3 years 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

Everton stadium cladding firm files administration notice

Alucraft Systems Ltd has been on Everton job since last May
4 hours ago

Crest Nicholson hit by more build defect problems

Remediation work on four more sites could cost £15m
3 hours ago

Beard expands reach as revenue hits record £179m

Builder starts 2024 with healthy head of work
11 hours ago

Race to start for £25m Cardiff twin tower reclad job

Cardiff council to use SEWCAP to bid Butetown high rise flats revamp
14 hours ago

Gove calls up ‘super-squad’ to clear London planning log-jam

Specialist planning team first to unlock 7,000 homes in Newham and Greenwich
18 hours ago

Permasteelisa in £35m cladding win at St John’s Wood Square

Italian specialist to start work on luxury resi site by the end of this year
20 hours ago

Investor pumps another £30m into low carbon builder

House builder Greencore gets more funding as latest results reveal £4m loss
23 hours ago

800-bed Leeds student and shops scheme approved

Major three-block scheme will replace The Core shopping centre in the city
1 day ago

Modular homes specialist files administration notice

Lighthouse bosses battle to save the business
1 day ago

Go-ahead for £175m Birmingham Broad Street tower

Work to start on 47 storey build to rent tower in September
1 day ago

Erith trading rebounds after lengthy bid-rigging probe

Staff paid £1.5m bonus after year of growth and return to profit
1 day ago

Balfour and Costain win vast power and carbon capture job

Nine firms to share £4bn Teesside net zero work bonanza
4 days ago

First ‘Great Grid Upgrade’ job goes to MGroup and Murphy

Works to start this summer on £400m Yorkshire GREEN electricity pylon upgrade
4 days ago

London council can no longer police planning applications

Planing row reveals Greenwich officials no longer follow-up to check on developments
4 days ago

Surgo Construction falls into administration

46 jobs lost as historic contractor ceases trading
5 days ago

Mace fresh start date for £90m Natural History Museum hub

Reading project to build store for 28m specimens to start early next year
4 days ago

Competition watchdog probes Barratt Redrow merger

CMA opens investigation into creation of mega house builder
4 days ago

Safety chiefs act to avoid building control crisis

Three-month extension to deadline for professionals to prove their competence
4 days ago

TClarke hits £500m turnover target but profitability slips

Big work-winning year sees order book swell 70% to £943m
4 days ago

Just 10% of £10bn Levelling Up funding spent by councils

Speed of delivering 'shovel-ready' projects fails to meet expectations
4 days ago

Six win £1bn North West & Central railway works deal

Story, Murphy and Amey feature in five-year CP7 framework
4 days ago

Willmott Dixon names new finance chief

James Mackenzie joins from Willmott Dixon's Eco World development JV
4 days ago

Ilke Homes name reappears after £320m collapse

New brand Homespace now owns modular designs after Ilke failure
5 days ago

Second staircase rule costs Vistry £19m

Firm reopens East Midlands timber frame manufacturing plant
5 days ago

Clients urged to get ahead of contractor recovery cycle

T&T says investment decisions must be ‘made not delayed’ for best value
5 days ago

Fife groundworks and plant hirer goes under axing 35 jobs

James Penman (Plant Hire) falls into administration in 50th anniversary year
5 days ago

Smart Motorway Programme Alliance chief to step down

Tony Slater is moving on to take up fresh career challenge
5 days ago

Balfour M25 workers vote for strike in pay row

Maintenance crews to down tools over "meagre" pay offer
6 days ago

Andrew English returns to Skanska as infrastructure boss

Returning director replaces Jonathan Willcock who is off to Costain
6 days ago

Construction back in growth as output rises 1.1% in January

Green shoots of recovery as private housing returns to growth
6 days ago

Contractor services