Construction has continued at stations, cross-passages and emergency egress shafts (EES), with Airport Central Station fully excavated in January in preparation for the TBM breakthrough anticipated in March.
Other preparations for the TBM’s arrival include sealing the base slab, pouring concrete in the first of six stages, waterproofing and installation of steel reinforcing.
After a warehouse at the Forrestfield site was converted into a segment production facility last year, more than 30 per cent of the 54,000 segments – which will be used to construct approximately 9,000 concrete rings to build the tunnels – required have already been produced and are being stockpiled, ready for use.
At Bayswater, work on the diaphragm walls (d-walls) for the tunnel and dive structure is underway, with ground compaction for the heavy vehicle hardstand to be completed by mid-March.
A number of EES are progressing, including d-wall construction at the Wright Crescent EES in Bayswater, excavation to base slab level at the Abernathy Road EES and mobilisation of the crane for excavation at the Airport West EES.
For more information visit the Forrestfield-Airport Link website.
If you have a project you would like featured in Trenchless Australasia contact Journalist Chloe Jenkins at cjenkins@gs-press.com.au