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Australia: Sinkhole opens above M6 tunnel construction in Sydney
Workers have noticed falling debris while working 18 meters under the sinkhole and immediately exited the in-construction tunnel to safety.
A two story industrial building right on the sinkhole has sagged and on the brink of collapse. Probably saved by so far thanks to its steel-construction method used.
The M6 motorway and tunnels are being built by the CIMIC Group’s CPB Contractors and UGL, in a joint venture with Italy's Ghella, to deliver stage 1 of Sydney’s M6 motorway.
As The Sydney Morning Herald reports;
and
Contractors CPB, Ghella and UGL abandon the $3.1 billion M6 project after sinkhole emerges during tunnelling
Transport for NSW said that Sydney's A$3.1bn (1.5bn) M6 motorway tunnel remains around 90% complete, a figure first mentioned several months ago, amid recent reports that contractor CGU may exit the project following two subsidence incidents in March 2024.
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.smh.com.au/national/nsw/building-at-risk-of-collapse-in-south-sydney-after-ground-sinks-20240301-p5f90c.html
Rockdale building, M6 tunnel collapse: Workers evacuated in Sydney’s south
www.smh.com.auConstruction on part of the $3 billion M6 motorway project has been brought to a sudden halt after a large hole opened up at the Rockdale site.