TBMs Daphne and Beatrice have completed excavation of the 11km tunnels from The Bays to Sydney Olympic Park.
During their 18-month journey the 7m-diameter, double shield hard rock TBMs removed more than 2 million tonnes of material and installed 72,456 segments.
Work inside the 200m-long, 37m-wide, and 27m-deep station box at Sydney Olympic Park will now shift to dismantling the TBMs and getting the box ready for station construction. In the tunnels, the cross-passages will now be completed.
Sydney Olympic Park metro station will feature an underground island platform for everyday use, plus two additional side platforms to provide increased capacity during events.
TBMs Beatrice and Daphne made tunnelling history last year when they arrived at Five Dock Station site minutes apart to achieve the first double TBM breakthrough in the southern hemisphere.
The latest breakthrough coincides with another major milestone for Sydney Metro West as the Department for Planning, Housing and Infrastructure has approved plans for a new town centre that will create more than 300 new residential dwellings in Sydney Olympic Park.
The Sydney Metro West project will double rail capacity between Greater Parramatta and the Sydney CBD, and make it easier and faster to travel around western Sydney.
