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The panel will explore the challenges and opportunities for bridging the library and information science (LIS) research practice gap in Australia. The panel brings together participants from the Research Assistance and Development for Australian Researchers (RADAR) Grant, an initiative of the Library and Information Science Research Australia (LISRA) project. The LISRA project is a three-year project aimed at encouraging and enabling research culture and practice within the Australian LIS sector.

Author(s) retain copyright, but ASIS & T receives an exclusive publication license The panel will explore the challenges and opportunities for bridging the library and information science (LIS) research practice gap in Australia. The panel brings together participants from the Research Assistance and Development for Australian Researchers (RADAR) Grant, an initiative of the Library and Information Science Research Australia (LISRA) project. The LISRA project is a three-year project aimed at encouraging and enabling research culture and practice within the Australian LIS sector.

Author(s) retain copyright, but ASIS & T receives an exclusive publication license The panel will explore the challenges and opportunities for bridging the library and information science (LIS) research practice gap in Australia. The panel brings together participants from the Research Assistance and Development for Australian Researchers (RADAR) Grant, an initiative of the Library and Information Science Research Australia (LISRA) project. The LISRA project is a three-year project aimed at encouraging and enabling research culture and practice within the Australian LIS sector.

Work is being carried out by the Centre for Mining Technology and Equipment (CMTE) on improved rock breakage methods for hard rock mining using disc cutters. The first goal was to predict disc cutter forces from a knowledge of rock properties, rock boundary conditions, and cutter geometry. Two systems are being developed, both of which use an undercutting method, thus exploiting the rock's weakness in tension. One of these employs drag bits, which limits this system to weaker rocks, and the other involves an oscillating disc cutter. Two other prospective cutting systems are briefly discussed: the Wirth continuous mining machine, and the use of mini disc cutters., Work is being carried out by the Centre for Mining Technology and Equipment (CMTE) on improved rock breakage methods for hard rock mining using disc cutters. The first goal was to predict disc cutter forces from a knowledge of rock properties, rock boundary conditions, and cutter geometry. Two systems are being developed, both of which use an undercutting method, thus exploiting the rock's weakness in tension. One of these employs drag bits, which limits this system to weaker rocks, and the other involves an oscillating disc cutter. Two other prospective cutting systems are briefly discussed: the Wirth continuous mining machine, and the use of mini disc cutters.

Cut-and-break makes use of the fact that breaking rock in tension towards a free face requires a specific energy of excavation which is small in comparison with that for conventional indentation. The excavation process comprises a cutting step in which a groove is cut into the rock surface, followed by a breaking phase in which a tool is inserted into the cut to break the adjacent rock. Although cut-and-break has a long history, no new machines have been designed in the past few decades. Its application in a new experimental machine developed at the University of Queensland is described. Potential uses would involve the excavation of thin layers of moderately hard rock, such as partings or thin coal seams, cap-rocks above soft material, or the tops of large heap-leach dumps requiring tilling and containing occasional very large rocks., Cut-and-break makes use of the fact that breaking rock in tension towards a free face requires a specific energy of excavation which is small in comparison with that for conventional indentation. The excavation process comprises a cutting step in which a groove is cut into the rock surface, followed by a breaking phase in which a tool is inserted into the cut to break the adjacent rock. Although cut-and-break has a long history, no new machines have been designed in the past few decades. Its application in a new experimental machine developed at the University of Queensland is described. Potential uses would involve the excavation of thin layers of moderately hard rock, such as partings or thin coal seams, cap-rocks above soft material, or the tops of large heap-leach dumps requiring tilling and containing occasional very large rocks.

In cut and break excavation the rock is first undercut and the undercut material subsequently broken free by a wedging action. Potential advantages that would make the process suitable for hard rock tunnelling include a probable reduction in the overall specific energy of the excavation and the small number of picks with which the cutting head would be fitted. Experiments are being carried out at the University of Queensland to develope a suitable combination of a cutting wheel, orientated in the manner of a Wohlmeyer wheel but fitted with appropriately laced picks, and a bursting wheel reorientated and redesigned so as to be carried into the slot by the cutting wheel and break away the undercut rock. A boundary element model of the way the largest fragments are excavated has also been constructed., In cut and break excavation the rock is first undercut and the undercut material subsequently broken free by a wedging action. Potential advantages that would make the process suitable for hard rock tunnelling include a probable reduction in the overall specific energy of the excavation and the small number of picks with which the cutting head would be fitted. Experiments are being carried out at the University of Queensland to develope a suitable combination of a cutting wheel, orientated in the manner of a Wohlmeyer wheel but fitted with appropriately laced picks, and a bursting wheel reorientated and redesigned so as to be carried into the slot by the cutting wheel and break away the undercut rock. A boundary element model of the way the largest fragments are excavated has also been constructed.

A new and economical method of mechanical excavation has been developed at the University of Queensland. Cut-and-break excavation exploits the comparative weakness of rock in tension by breaking free large lumps of rock using low-energy processes. The lumps are undercut using conventional drag-tools or picks. A wedge device is then inserted into the undercut and a large lump is prised free before undercutting continues. The process is continuous, a cutting wheel fitted with drag-tools and bursting wheel doing both the cutting and breaking. As the cutting wheel rotates, the drag tools excavate a slot. When the bursting wheel is carried round into this slot by the cutting wheel, it breaks free the undercut rock using a wedging action. The advantages of the excavation method include a low specific energy of excavation, the potential for significant dust reduction, production of fewer fines, lower tool consumption costs/m3 rock and the potential for extending excavation in stronger rock than is currently economical., A new and economical method of mechanical excavation has been developed at the University of Queensland. Cut-and-break excavation exploits the comparative weakness of rock in tension by breaking free large lumps of rock using low-energy processes. The lumps are undercut using conventional drag-tools or picks. A wedge device is then inserted into the undercut and a large lump is prised free before undercutting continues. The process is continuous, a cutting wheel fitted with drag-tools and bursting wheel doing both the cutting and breaking. As the cutting wheel rotates, the drag tools excavate a slot. When the bursting wheel is carried round into this slot by the cutting wheel, it breaks free the undercut rock using a wedging action. The advantages of the excavation method include a low specific energy of excavation, the potential for significant dust reduction, production of fewer fines, lower tool consumption costs/m3 rock and the potential for extending excavation in stronger rock than is currently economical.