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WATCH: MTBM breaks through

Edge Underground recently completed a bore for City West Water with its microtunnelling boring machine (MTBM) breaking through in Carlton.

The challenging bore was part of the M205 Carlton Water Main Renewal project, with the MTBM breaking through to the other side of the Pigdon Street roundabout on Canning Street, Carlton North.

Edge Underground was required to complete the bore without interfering with or damaging the complex underground infrastructure network and said the site’s ground conditions – a complicated mix of rock and clay with a small section of previously excavated ground – also provided an interesting challenge for its team.

“However, with the team’s expertise and using the AXIS laser guided microtunnelling system, the bore was a success,” said Edge Underground.  

City West Water said the complex network and the presence of a significant tree on the roundabout meant the project required a special approach.

“The micro-tunnel bore has been hard at work in order to feed in the final lengths of water main pipe to be installed on Canning Street instead of the more traditional digging methods.”

Edge Underground was awarded the contract by JAYDO Construction.

For more information visit the Edge Underground website.

If you have news you would like featured in Trenchless Australasia Assistant Editor Sophie Venz at

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