MAY 2019

MAY 2019

City & SouthwestNEWSLETTER: VICTORIA CROSS STATION

Station excavation over half completeSydney Metro is Australia’s biggest public transport project. It will transform Sydney, delivering more trains and faster services for customers across the network.

Sydney Metro City & Southwest extends the new metro network from the end of Sydney Metro Northwest at Chatswood, under Sydney Harbour, through the CBD, and west to Bankstown.

John Holland CPB Ghella (JHCPBG) is building the 15.5 kilometre long twin railway tunnels between Chatswood and Sydenham and excavating six new metro stations.

Excavation of underground structures at the Victoria Cross sites is over 60 per cent complete. Roadheaders

and rock hammers are continuing to cut out the station caverns and passageways which run under Miller Street between the north and south sites. Rock anchors, bolts and mesh are installed after excavation and concrete sprayed on the exposed walls.

The lift access shaft at the Victoria Cross North site, which will be about 45 metres deep, is about 80 per cent excavated. This involves the use of saw cutting, drilling, roadheader excavation, rock hammering and ripping.

It has been decided that controlled blasting won’t be used to excavate the shaft at the northern site after extensive community consultation and a review of the results from a trial held in February.

Roadheaders and other machines are busily excavating the new station

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Three–month look aheadActivity (subject to change) June July August

Excavating station cavern • •Excavating, lining and waterproofing northern and southern nozzles •• •• ••Excavating northern access shaft and services and pedestrian access tunnels • • •Installing mesh, rock bolts and spraying concrete on excavated walls •• •• •Removing excavated material on trucks •• •• ••Receiving material, plant and equipment deliveries and removals •• •• ••

Victoria Cross South • Victoria Cross North •

City & Southwest

VICTORIA CROSS STATION

Two TBM breakthroughs The two tunnel boring machines (TBMs) which started tunnelling from Marrickville dive site late last year recently reached the Waterloo Station site. The TBMs carved through about 304,000 tonnes of rock as they built 3.1 kilometres of fully lined tunnel, installing 1815 concrete rings along the way.

The TBMs underwent maintenance as they were moved across the station area before being relaunched at the northern end of the site. The TBMs are now tunnelling towards the Pitt Street Station site via Central Station.

SMCSWTSE-JCG-SVC-SH-NEW-031071Printed on Spicers – Monza Recycled Gloss

Up to 21,000 segments are stored in the precast yard

TBM Nancy (left) moving across the station area on the day that Mum Shirl (right) broke through the rock wall at the Waterloo Station site

TBMs Wendy and Mabel, which launched from Chatswood in January and February, are making their way towards the harbour’s edge. Their first stop will be at the Crows Nest Station site in the coming months.

A fifth TBM will build the historic first rail crossing deep under Sydney Harbour. TBM Kathleen will start tunnelling later this year to dig twin metro rail tunnels from Barangaroo to Blues Point.

Segments stacking upThe precast facility at Marrickville has so far made about 50,000 concrete tunnel lining segments. It is operating 24/7 to produce the 99,746 segments needed to complete the twin 15.5 kilometre long tunnels.

Each hour about 18 segments come off the production line know as a ‘carousel’. As many as 21,000 segments are stored in the precast yard at a time, while trucks transport

them to Chatswood and Marrickville to keep up the supply to the TBMs. The machines install six segments to form a ring each time they excavate a 1.7 metre section of tunnel.

Boral operates a concrete batch plant onsite due to the volume of concrete needed to make the segments. The plant produces about 1286 tonnes of concrete a day.

Kids encouraged to dream bigJHCPBG has announced a community partnership with Souths Cares to support Aboriginal high school students in Sydney’s South to achieve their education and employment goals. The charity delivers highly successful mentoring programs to young Aboriginal people through its long-term Nanga Mai Marri Program, which means Dream Big in the Gadigal language.

Souths Cares works with students from the beginning of year 10 until six months after they complete their HSC. The program is currently mentoring more than 80 students. JHCPBG will participate in mentoring opportunities and contribute funds to employ a mentor over the next two years.

Want to stay up to date?Register today for community email updates at tunnels@transport.nsw.gov.au.

Contact usFor more information, enquiries or complaints please contact us at:

 1800 171 386 24-hour community information line

 tunnels@transport.nsw.gov.au

 sydneymetro.info

 www.facebook.com/SydneyMetro

  www.sydneymetro.info/tunnelling to follow the progress of the TBMs

  Sydney Metro City & Southwest PO Box K659, Haymarket NSW 1240

  If you need an interpreter, call TIS National on 131 450 and ask them to call 1800 171 386