In January 2013 UEA Civil & Mining was contracted by Fulton Hogan to cut 60,000 cubic metres of rock using the Vermeer T1255 terrain leveller. The geology of the site consisted of varying rock types, ranging from approximately 50 MPa up to 200 MPa – some of the hardest rock in the world. These areas of rock could not be blasted due to the close proximity of a main gas line, historical sites and residential and commercial areas including a nearby winery.
Terrain leveling technology is an economically efficient and environmentally gentle solution for road construction projects like this one, where bulk rock excavation is required without blasting. Strict environmental regulations for noise and dust emissions also make terrain leveling methods an attractive alternative to traditional dill and blast.
As part of the Gerringong upgrade project UEA Civil & Mining designed and developed a new built in dust suppression system for the T1255 Terrain Leveller to meet strict EPA guidelines for dust control during bulk rock excavation and civil construction projects. Having trialled various methods of dust control in the past UEA has found this new dust suppression system to be the most effective.
NSW Roads and Maritime Services contracted Fulton Hogan to design and construct the Gerringong upgrade with completion expected in the first half of 2015, weather permitting.