Case Study 1
The initiative to re-support the entrance drifts to the Moranbah North underground Coal Mine (owned by Anglo American Metallurgical Coal Australia) was due to a number of roof falls occurring between Jan 2009 and Nov 2011, within the conveyor drift. A review of the existing support found that it did not meet the level of support required for LOM and therefore a two-stage program of re-support took place. Blackrock Mining Solutions provided assistance in the re-design of the drift support, as well as managing the quality assurance program for the entirety of the project.
This first case study describes the quality assurance process in the re-lining of the P&E drift with reinforced shotcrete.
Case Study 2
A review into the existing geology within the entrance drifts at the Moranbah North Underground Coal Mine highlighted the requirement for a ‘Real-time Remote Monitoring System’ to be installed in both the Man & Materials and Belt drifts. This real-time monitoring system was designed and installed by Blackrock Mining Solutions in order to monitor for any signs of future potential movement and to reduce the risks of any further potential roof falls.
This second case study briefly describes the background to the monitoring instrumentation program, as well as the techniques used in its design.
Case Study 3
A channel sampling project was conducted at North Goonyella underground Coal Mine (owned by Peabody Australia) in order to gain coal quality information prior to the installation of a new Longwall Top Coal Caving (LTCC) equipment into the 8N panel – June to Sept 2012.
The third case study below, outlines the method used in a recent coal quality channel sampling program at NGCM.