Travelling formwork complete at the Tantangara intake - major progress is being made at Snowy 2.0 with the successful completion of the travelling formwork for the Tantangara intake transition tunnel.
This essential piece of equipment plays a critical role in shaping the tunnel as it transitions from rectangular to circular, by facilitating the construction process and worker access. It carries the formwork needed for concrete pours for both the wall and crown sections of the transition tunnel.
Building the travelling formwork is an intricate process:
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Laser-cut shaping of the timber sections - fabricated off-site.
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Formwork assembly and erection - panels and falsework expertly assembled by Whittens. After the frame was assembled, the prefabricated panels were installed.
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Modular formwork – the panels can be removed and replaced as the geometry changes throughout the transition tunnel. The heaviest section weighs in at an impressive 45 tonnes, with the heaviest weight up to 115 tonnes.
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A 750-tonne crawler crane was used to lower the formwork approximately 50 metres into the intake pit, and winch system is used to move it into position along 70-metre rails.
Once complete, the transition tunnel will link the intake to the headrace tunnel, which will deliver water to the turbines in the Snowy 2.0 power station.
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About the Project
Clough and its parent company, Webuild, are part of Future Generation Joint Venture - FGJV, the principal contractor for project owner Snowy Hydro, delivering the iconic Snowy 2.0, a major Snowy Scheme expansion underpinning Australia’s transition to a renewable energy future.