Workers installing pipes at Pialba using micro tunnelling for a new sewerage line.
Workers installing pipes at Pialba using micro tunnelling for a new sewerage line. Alistair Brightman

Sewer will burrow under the street in Pialba

IT'S known as the micro tunneller and it's tracking the line of Pialba's Main St to construct a new sewer.

Wide Bay Water Corporation acting chief executive officer Tracey Tucker said most people were familiar with pipe works being carried out in an open trench.

But she said micro tunnelling needed just entry and exit locations, with pipes being installed through a passageway created by a boring machine under the earth's surface.

The works are part of the construction of a 450mm sewer using trenchless techniques, and Bothar Boring and Tunnelling have been hired to do the work.

"The contractor has been undertaking a site set-up since the beginning of August and will start the tunnelling process," Ms Tucker said.

She said the new sewer would divert flows from one catchment to another to reduce loads on the existing 40-year-old sewer system.

She said 800,000 litres of wastewater would flow through the new trunk sewer diversion every day once it's finished.

All of the works are scheduled for completion by the end of October.



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