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posted March 20, 2017 News No Comments



Tunnelling is now complete on the Amaroo Main Sewer Project, being constructed by John Holland Tunnelling for Yarra Valley Water in Victoria, Australia.
The project consisted of 8,260 metres of Flowtite® pipe produced by RPC Pipe Systems, including:
• 7,096 metres of tunnelling & pipejacking by three main sewer TBMs (1720mm dia).
• 474 metres of smaller diameter pipejacks (340mm to 1250mm dia)
• 690 metres of trenched pipe (DN1600)

Cameron Woodgate, Senior Project Engineer with John Holland Tunnelling, passed on the good news. “The Amaroo team is proud to inform the wider team that at approximately 8.30PM on the 21st February, TBM1 (Wendy) broke through the shotcrete at shaft 18 having mined 633m from shaft 20 on the final drive for the project. Wendy will now be cleaned up and given a well-deserved rest having completed 3158.5m of excavation of the total project length of 7570m.
The final breakthrough marks the end of major jacking forces in the pipe string. Although the project has a number of challenges remaining, all parties involved can enjoy the success and relief of the occasion.”

Written by Hillary Ham