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Mini TBM arrives on Melbourne West Gate Tunnel project

Melbourne West Gate Tunnel mini TBM

A new mini  tunnel boring machine (TBM) has arrived at the West Gate Tunnel project in Melbourne.

The mini TBM will dig a new section of the North Yarra main sewer, as 600m of the 100-year-old sewer will need to make way for the new road tunnels tfor the West Gate Tunnel project. 

Once it’s launched, the mini TBM is expected to move 12m a day and excavate approximately 9000m³ of dirt over the next year to build the new section of sewer.

The 3m in diameter TBM is one fifth the size of the TBMs that will dig the West Gate Tunnel Project’s twin road tunnels.

More than 1500 people are already working on the West Gate Tunnel Project, with the workforce to grow to 6000 at peak construction.

Melbourne West Gate Tunnel mini TBM

Melbourne West Gate Tunnel mini TBM

Victoria State minister for roads Luke Donnellan said: “It may be small, but this mini TBM will excavate 9000m³of soil and rock over the next 12 months to ensure a critical piece of underground infrastructure isn’t disrupted while we build the West Gate Tunnel.”

The 4000t TBMs for the West Gate road tunnels will arrive early next year.

In April, GE reported that a tunnelling hub had been completed ahead of the TBMS arriving for the West Gate Tunnel.

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