UEA successfully completes 510 metre Horizontal Boring Project for Hunter Water

Posted 1 May 2009

UEA has successfully completed a 510 metre bore of 500mm PE with a 2% grade for Hunter Water as part of the Dudley/Charlestown sewer upgrade works utilising a 300,000lb horizontal boring machine. Positioned within the Glenrock State Conservation area and needing to maintain pedestrian access at all times, several difficult challenges were faced.

Works on the bore commenced in early 2009 and despite encountering variations in the strata – this included conglomerate, siltstone, mudstone, sandstone and an un-worked coal seam – the project was completed on time meeting the tight tolerances required by Hunter Water.

CCTV and testing of the pipeline confirmed the constant downstream grade of the installed pipeline with no zero or positive grade along the route.