Linkage Infrastructure, Equipment And Facilities - Grant ID: LE150100058
Funder
Australian Research Council
Funding Amount
$560,000.00
Summary
Three dimensionally compressed and monitored Hopkinson bar . 3D compressed and monitored Hopkinson bar: The 3D compressed and monitored Hopkinson bar allows determination of the dynamic mechanical properties and fracturing behaviour of materials under such confinement. Understanding material behaviour under dynamic loading is essential in dealing with many engineering problems as excavation, fragmentation, earthquake, blasting, and structure design. In geotechnical and structure projects, materi ....Three dimensionally compressed and monitored Hopkinson bar . 3D compressed and monitored Hopkinson bar: The 3D compressed and monitored Hopkinson bar allows determination of the dynamic mechanical properties and fracturing behaviour of materials under such confinement. Understanding material behaviour under dynamic loading is essential in dealing with many engineering problems as excavation, fragmentation, earthquake, blasting, and structure design. In geotechnical and structure projects, materials are often subjected to existing confining stresses. The full-field optical techniques, with an ultra-high speed and resolution camera in the system, aims to assist the quantitative measurement of deformation fields including small strain induced in brittle material's failure and identification of constitutive parameters.Read moreRead less
Avoiding catastrophic failure of cable bolts in underground mines. This work aims to identify the factors responsible for the emerging problem of catastrophic failure of high-load cable bolts in underground mines and develop strategies for resisting their failure. The work is of high importance since failure of cable bolts is now being reported in several mines across Australia and is expected to become a problem world-wide. The work is novel as it intends to be the very first study of catastrop ....Avoiding catastrophic failure of cable bolts in underground mines. This work aims to identify the factors responsible for the emerging problem of catastrophic failure of high-load cable bolts in underground mines and develop strategies for resisting their failure. The work is of high importance since failure of cable bolts is now being reported in several mines across Australia and is expected to become a problem world-wide. The work is novel as it intends to be the very first study of catastrophic cable bolt failure. The expected outcome is the development of economically viable solutions for avoiding catastrophic cable bolt failure. It is anticipated that the findings will also be relevant to the civil engineering sector.Read moreRead less
Controlling density, viscosity and crystallisation in emulsion explosives to enhance safety and efficiency of blasting operations. The performance of emulsion explosives used throughout the mining industry can be severely compromised by the effects of shear arising from pumping and detonation shock waves. Understanding how shear affects droplet coalescence and crystallisation is critical in differential energy blasting, where emulsion density and composition vary widely along the bore hole. This ....Controlling density, viscosity and crystallisation in emulsion explosives to enhance safety and efficiency of blasting operations. The performance of emulsion explosives used throughout the mining industry can be severely compromised by the effects of shear arising from pumping and detonation shock waves. Understanding how shear affects droplet coalescence and crystallisation is critical in differential energy blasting, where emulsion density and composition vary widely along the bore hole. This project aims to contribute to the understanding of the effects of shear, and develop new methods and additives to stabilise droplets and bubbles over a wide range of compositions and conditions. The goal of this project is to improve the efficiency and safety of rock-blasting operations, reduce environmental impact, and reduce operating costs, giving the Australian mining industry a competitive edge.Read moreRead less
Engineering service work, global production networks and employment relations in Australian mining. Leading segments of Australian mining have embraced automated mining. This project will focus on the world's two leading engineering companies - Komatsu and Caterpillar - which are providing and maintaining this equipment. This restructuring is grounded in global production network theory and labour skill issues at the centre of this technological transition.
A novel whole-process analysis method for fractured rock slopes . Aims: The project aims to develop a discontinuous deformation and displacement analysis method to study the jointed rock slope instability.
Significance: The proposed method verified by experimental tests will be inherit the advantages of finite element method and discontinuous deformation analysis and is able to provide an entire and unified description of rock deformation and failure.
Expected Outcomes: The results of this integ ....A novel whole-process analysis method for fractured rock slopes . Aims: The project aims to develop a discontinuous deformation and displacement analysis method to study the jointed rock slope instability.
Significance: The proposed method verified by experimental tests will be inherit the advantages of finite element method and discontinuous deformation analysis and is able to provide an entire and unified description of rock deformation and failure.
Expected Outcomes: The results of this integrated study will provide a new method for engineers who wish to characterise and predict the stability of rock/tunnel slopes in Australia and worldwide.
Benefits: Australian society will benefit from new tools to facilitate more reliable assessment of risks associated with instability in rock slopes.
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Salty gas: the ecological risk of saline effluents from coal seam gas and other hydrocarbon resources. The objective of this project is to predict the effect of saline water produced from coal and coal seam gas extraction activities on freshwater systems. The findings will assist decisions on whether to permit discharge of such waste water, and if permitted under what conditions (e.g. water quality criteria) so as to prevent environment damage.
Discovery Early Career Researcher Award - Grant ID: DE130100457
Funder
Australian Research Council
Funding Amount
$360,945.00
Summary
Dynamic fracturing in shale rock through coupled continuum-discontinuum modelling. The research includes modelling the grain level fracturing of shale rock under dynamic loads. The outputs will have a direct impact on the development and optimisation of rock drilling and rock cutting technologies and will improve the operational efficiencies in which rock excavations are conducted.
BauxsolTM based grouts and shotcretes for the control of acid rock drainage. Acid rock drainage (ARD) occurs where sulphides (mostly pyrite, but also sulphides of other metals) are exposed to oxygen and water; the estimated global liability from ARD is over US$300 billion. There is currently no cost-effective way to prevent the release of acid and heavy metals from exposed sulphide minerals especially at abandoned mine sites. This study investigates the use of BASECONTM transformed bauxite refin ....BauxsolTM based grouts and shotcretes for the control of acid rock drainage. Acid rock drainage (ARD) occurs where sulphides (mostly pyrite, but also sulphides of other metals) are exposed to oxygen and water; the estimated global liability from ARD is over US$300 billion. There is currently no cost-effective way to prevent the release of acid and heavy metals from exposed sulphide minerals especially at abandoned mine sites. This study investigates the use of BASECONTM transformed bauxite refinery residues (BauxsolTM) to grout waste rock dumps and tailings dams and to develop concretes that can be sprayed on open cut walls and floor to prevent and treat the ARD as it is formed.Read moreRead less
Microbiologically Induced Stress Corrosion Cracking in Underground Mines. Premature brittle failure of rock & cable bolts due to stress corrosion cracking can cause fatalities and serious damage, and has been reported in several mining operations across Australia and world-wide. The evidence suggests that microbial activity is a contributing factor. The project aims to implement experimental methodologies to determine the specific conditions responsible for bolt failure and develop novel prevent ....Microbiologically Induced Stress Corrosion Cracking in Underground Mines. Premature brittle failure of rock & cable bolts due to stress corrosion cracking can cause fatalities and serious damage, and has been reported in several mining operations across Australia and world-wide. The evidence suggests that microbial activity is a contributing factor. The project aims to implement experimental methodologies to determine the specific conditions responsible for bolt failure and develop novel prevention techniques applicable in underground mines. The benefits of this research will be improved understanding of the environment causing catastrophic failure of bolts and avoidance of potential hazards & economic loss in mining projects. This will lead to improved safety & increased productivity in mining operations.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE120100011
Funder
Australian Research Council
Funding Amount
$700,000.00
Summary
The national geotechnical centrifuge facility. A new geotechnical centrifuge will enable the modelling of complex offshore and onshore structures. The new facility will support many geotechnical fields, associated with the economical and geographical development of Australia, and ensure that Australia will maintain its leadership within the international physical modelling community.