Excavation & Rock Drilling Projects in Victoria


On-Grade sewer rock drilling

DirectBor recently assist Backlog group in installing 3km of on-grade sewer in rock in templestowe, grades varied from 1:9 to 1:150 The team were selected for a project by Fulton Hogan Pty Ltd, the company responsible for the construction of the Anglesea Overpass on behalf of the Victorian Government. The new overpass is part of Stage 4A of the Geelong Ring

Road project. Overhead power lines were impeding the planned location of the overpass and had to be removed. DirectBor’s job was to install underground conduits over a distance of 100m. Fourteen conduits, varying in size from 63mm to 150mm were installed with grouting using the directional boring method. Expertise accrued over time always proves invaluable when dealing with the inconsistencies of underground geology and with typical effi ciency, the total project was successfully delivered by DirectBor within 8 working days. Paul Finch continues to run a non-stop business and his company is always in demand. When drilling through anything to allow for underground installations DirectBor’s reputation is second to none. The company has a long list of credits including the installation of new conduits in the main street in Lorne in Victoria. The conduits were required to allow for the existing over head power lines to be placed under ground. DirectBor installed 1.6 km of conduits in a water table via directional drilling. The project was completed on behalf of Canteri Bros in just three weeks with minimum disturbance to the surrounding residents and businesses in the area.

Recently, DirectBor were called on to complete 1km of rock drilling though blue stone for the Mortlake power station. The drilling was necessary to assist in the supply of a 180mm water main to the new gas fired power plant. DirectBor also installed a 180mm recycled water main piped from the new power plant to the sewerage plant.

It was a particularly challenging project and the DirectBor team had to drill through insecure rock and fracted grounds at depths of 8m to allow for creek crossings. The team also had to formulate a special mud program to enable fallen rock, the size of tennis balls, to float out during the drilling process.

The challenges didn’t stop there and DirectBor needed to drill on grade to allow for a steel main to be inserted under Warrnambool Highway. Every bore hole had to be grouted as per the requirement by the principal contractor, Origin Energy. Overall the project took 6 weeks and DirectBor enjoyed the opportunity to apply what they do best in overcoming the variety of challenges for the Egan’s Group, Bilfinger Berger Services and Origin Energy.

Multiple conduit installation