On Saturday, July 6th , the second 130m-long TBM arrived at Redcliffe Station for the Forrestfield Airport Link project. TBM Sandy broke through into Redcliffe Station, emerging from her most recently constructed 2.6km stretch of tunnel. Maintenance works began shortly after her arrival and will include testing of mechanical and electrical equipment, replacing worn cutterhead tools and the installing of a brand-new screw conveyor.
Since starting her underground journey in late-2017, TBM Sandy has successfully tunnelled more than 4.5km, cleared the airport estate and installed more than 2750 rings to form Tunnel Two. Click here to see the machine's 7m-diameter cutter head crunching through the station's concrete wall.
Meanwhile at Bayswater Junction, where the TBMs will finish tunnelling, works on the 400m-long base slab are now complete. The required concrete pours took seven months to complete and used approximately 5400 m3 of concrete.
Above ground structures are also taking shape across the project. Click here for the July project update, here and au/34 for tunnelbuilder archive. Visit https://www.forrestfieldairportlink.wa.gov.au/. 29/19.
