Melbourne’s $11bn Metro Tunnel Project’s 9km long twin rail tunnels are now halfway to completion. TBMs Joan and Meg have now both finished boring between the tunnel’s western entrance in Kensington and the site of the new Parkville Station, with Meg breaking through at Parkville late last week.
The third TBM, Millie, completed tunnelling between the new Anzac Station site under St Kilda Road and the eastern tunnel entrance in South Yarra on Friday. The fourth TBM, Alice, is just weeks from completing a parallel route.
The four 7.28m diameter Herrenknecht Mixshield TBMs have so far excavated more than 364,000 cubic metres of rock and soil and installed more than 30,000 individual concrete segments, each weighing 4.5 tonnes, to line the tunnels as crews worked around the clock with stringent health measures in place.
Both TBM Meg and TBM Joan, which broke through at Parkville Station in late August, are being moved through the station site before being cleaned and recommissioned.
TBM Joan will be relaunched in the coming weeks to dig towards the new State Library Station, with TBM Meg following soon after as they make their way towards the heart of Melbourne’s CBD.
TBM Millie’s cutterhead and shield will be lifted out of the South Yarra tunnel entrance site by crane then transported to the Anzac Station site. The rest of the TBM will be pulled back through the tunnel to Anzac Station, then reassembled and relaunched towards Town Hall Station later this year.
The Metro Tunnel project is being constructed by the Cross Yarra Partnership (CYP) consortium, comprising Lendlease Engineering, John Holland, Bouygues Construction and Capella Capital,
Construction on the Metro Tunnel Project, which includes new underground stations at Arden, Parkville, Domain and two new CBD stations directly connected to the City Loop at Flinders Street and Melbourne Central stations, has continued throughout September, with workers adhering to strict COVID-19 safety measures in line with the Victorian Government’s stage 4 restrictions.
The Metro Tunnel Project will create additional capacity for more than half a million passengers a week during peak periods and transform the way Victorians travel around Melbourne. The project will connect the Sunbury Line to the Cranbourne and Pakenham lines via the twin 9km-long rail tunnels at depths up to 30m.
The Metro Tunnel Project is fully funded and is on track to be completed by 2025
Pioneering Underground Technologies - Herrenknecht AG is the technology and market leader in mechanized tunnelling. As the only company worldwide, Herrenknecht delivers cutting-edge tunnel boring machines for all ground conditions and in all diameters - ranging from 0.10 to 19 meters.
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