Grosvenor Mine Drift Drivage development
|Project||Grosvenor Mine Drift Drivage development|
|Client||Anglo American Australia|
Anglo American’s Grosvenor Mine is a flagship project in the Moranbah Region, producing its first longwall coal in May 2016. The site is located approximately 190 kilometers south-west of Mackay, and has an anticipated mine life in excess of 30 years.
Mastermyne were engaged to follow on from the TBM drift construction and undertake the initial drift development works including pit bottom and tailgate works. This project helped Anglo to reach their first longwall coal milestone seven months early and more than $100 million under budget.
Mastermyne recruited and mobilised a workforce of over 280 personnel, including some statutory positions.
Mastermyne also completed the Drift Fitout works at Grosvenor Mine. Using innovative modified civil tunnelling construction methods, we were able to reduce the schedule from 43 weeks to 28 weeks. A suitable mine life running surface was required within the circular concrete lined drifts as delivered by the TBM. To achieve this result a floor piece was designed as precast T unit concrete sections.
In addition to the roadway surface man refuge bays were to be constructed. These required the removal of the precast drift lining, canopy tubes drilled and grouted for primary support, excavation of the refuges, and then lining with shotcrete. All constructed using Brokk underground compliant excavator.
This project was awarded the 2016 Queensland Contractor Awards ‘Time Saving Initiative’ Award.