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Clean-cut below Mooloolah River 

900 mm high-density polyethylene pipe exiting at Brightwater Sports Ground after being installed using the Vermeer 330 drill rig.

2 November, 2017

Pipeline Drillers has accomplished a 315-metre crossing beneath the Mooloolah River to mark the second horizontal directional drill and the start of Unitywater's new 3.2 kilometre Mountain Creek to Kawana Sewerage Pipeline.

Drilling of the 1200 millimetre diameter hole commenced early September, with installation of the pipe from the transport corridor north of Kawana Way and extending beneath the river to exit at the Brightwater Sports Ground six weeks later, steering the project to 65 percent complete.

Pipeline Drillers Project Manager Colin Harris said the Mooloolah River Crossing was earmarked to be one of the more challenging sections but has come out the other side as one of the great successes of the project. 

“Initial assessment of the alignment revealed an onerous mix of sand, clay and sandstone together with a gravel entry, however thanks to our experienced crew and careful selection of tooling, it was a clean-cut drill,” Colin said.

“An array of rock reamers to cut through the sandstone and soft cutters to navigate the forward ream of clay and sand were utilised with great precision to enlarge the hole.”

 

Construction partner Dormway will now complete tie-in works to the existing and new pipeline at Brightwater Sports Ground with full restoration of the area to ensue. 

While this is underway our horizontal directional drilling crew will be constructing the final 1.2 kilometre segment of the Mountain Creek to Kawana pipeline, with works set to wrap up before Christmas.

 

For regular updates on the Unitywater Caloundra and Mountain Creek to Kawana Sewerage Pipeline Projects, follow the project Facebook page or subscribe to receive SMS updates