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Study of Coupled Water-Gas-Sediment (three-phase) Flows through Jointed and Stratified Rock. Coupled Water-Gas-Sediment Flows through Rock Joints project outcomes are expected to surpass the current knowledge on ground/slope stability and water inundation, enhance engineering solutions of the associated problems and provide vital improvements to public safety. The research team will publish the research outcomes through peer-reviewed journals and conferences, nationally and internationally, rais ....Study of Coupled Water-Gas-Sediment (three-phase) Flows through Jointed and Stratified Rock. Coupled Water-Gas-Sediment Flows through Rock Joints project outcomes are expected to surpass the current knowledge on ground/slope stability and water inundation, enhance engineering solutions of the associated problems and provide vital improvements to public safety. The research team will publish the research outcomes through peer-reviewed journals and conferences, nationally and internationally, raising Australia’s scientific profile within the civil engineering and mining community. The Australasian Institute of Mining and Metallurgy and Institution of Engineers seminars will be organised to promote discussion with the practitioners while the Australian geotechnical community will gain expertise through the PhD program. Read moreRead less
Stochastic modelling of fractures in crystalline rock masses for hot dry rock enhanced geothermal systems. Hot dry rock geothermal energy will contribute significant base-load power to the nation without producing greenhouse gas emissions. This research will contribute to the optimal design of fracture generation programmes to create effective artificial reservoirs in geothermal systems, which is crucial to successful geothermal energy production.
Large-scale and long-term storage of Hydrogen in underground reservoirs. This project aims to test effective strategies to re-use Australia’s depleted gas fields for large-scale, long-term, renewable energy storage. With Australia’s energy system undergoing a radical hydrogen-based energy transformation, a critical challenge in the years ahead will be to effectively store massive volumes of hydrogen for long periods (months and years). The overall expected outcome of this research is to fully un ....Large-scale and long-term storage of Hydrogen in underground reservoirs. This project aims to test effective strategies to re-use Australia’s depleted gas fields for large-scale, long-term, renewable energy storage. With Australia’s energy system undergoing a radical hydrogen-based energy transformation, a critical challenge in the years ahead will be to effectively store massive volumes of hydrogen for long periods (months and years). The overall expected outcome of this research is to fully understand the performance and the geological and environmental implications of long-term storage of hydrogen in empty gas fields. Benefit: this foundational scientific knowledge is crucial if Australia is to effectively bring about this new, sustainable, affordable, long-term, hydrogen-storage solution. Read moreRead less
Determination of unsaturated soil properties using cone penetrometer data. Unsaturated soils account for almost 40 percent of earth's land surface. Over 70 percent of Australia's land surface consists of unsaturated soils. The research proposed aims at providing a methodology for a realistic characterisation of unsaturated soils in the field. The developments in this research will be immediately applicable to many engineering problems of national interest including dams, embankments, foundatio ....Determination of unsaturated soil properties using cone penetrometer data. Unsaturated soils account for almost 40 percent of earth's land surface. Over 70 percent of Australia's land surface consists of unsaturated soils. The research proposed aims at providing a methodology for a realistic characterisation of unsaturated soils in the field. The developments in this research will be immediately applicable to many engineering problems of national interest including dams, embankments, foundations, highways and airfields. The work will also benefit Australia and the Australian research community through the development of a new expertise within Australia, which is likely to receive wide spread attention in both scientific and engineering communities.
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A fully coupled elasto-plastic model for dynamic analysis of unsaturated soils. This research is concerned with an important and, as yet, unresearched class of problems in geomechanics dealing with dynamic analysis of unsaturated soils. The work is of significance as it will contribute to the progress of soil mechanics as a science, advancing it from the study of unsaturated soils to that of real soils, which are invariably unsaturated. The project should lead to cost savings in many geotechnica ....A fully coupled elasto-plastic model for dynamic analysis of unsaturated soils. This research is concerned with an important and, as yet, unresearched class of problems in geomechanics dealing with dynamic analysis of unsaturated soils. The work is of significance as it will contribute to the progress of soil mechanics as a science, advancing it from the study of unsaturated soils to that of real soils, which are invariably unsaturated. The project should lead to cost savings in many geotechnical engineering practices as it will provide a better understanding of the response of unsaturated soils to dynamic loading and provide a greater confidence in the prediction of the preformance of earth-structures.Read moreRead less
Experimental Investigation and Constitutive Modelling of Thermo-Hydro-Mechanical Coupling Effects in Unsaturated Porous Media. The research proposed in this project will benefit the Australian community through provision of a methodology for a more realistic and fully coupled modelling of flow and deformation in unsaturated porous media subject to thermal loading. The developments proposed in this research will be immediately applicable to many engineering problems of national interest, includin ....Experimental Investigation and Constitutive Modelling of Thermo-Hydro-Mechanical Coupling Effects in Unsaturated Porous Media. The research proposed in this project will benefit the Australian community through provision of a methodology for a more realistic and fully coupled modelling of flow and deformation in unsaturated porous media subject to thermal loading. The developments proposed in this research will be immediately applicable to many engineering problems of national interest, including storage of nuclear wastes, removal of contaminants using air sparging, steam drive/steam flooding, and in situ combustion. The work will also benefit Australia and the Australian research community through the development of a new expertise within Australia, which will have a high potential for export to other countries.
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Long-term mechanical-flow performance of an enhanced geothermal reservoir. The project aims to improve methods to generate power from geothermal energy. Extraction of heat from deep earth is promising but so far inefficient. Heat is transferred when water is pumped underground, but recovery of heat is low and much water is lost. This project aims to investigate carbon dioxide (CO2) as an alternative to water. There are excellent prospects of relatively efficient recovery, and any loss of CO2 in ....Long-term mechanical-flow performance of an enhanced geothermal reservoir. The project aims to improve methods to generate power from geothermal energy. Extraction of heat from deep earth is promising but so far inefficient. Heat is transferred when water is pumped underground, but recovery of heat is low and much water is lost. This project aims to investigate carbon dioxide (CO2) as an alternative to water. There are excellent prospects of relatively efficient recovery, and any loss of CO2 in deep-earth geothermal reservoirs is beneficial because it represents permanent sequestration of carbon. The project plans to investigate the evolution of fluid-flow systems, recovery rate, long-term injectability, and mechanical-flow behaviour. Findings are expected to provide practical information on the geomechanical viability of this green power option.Read moreRead less
Mobile foundations: shifting paradigms in deep sea engineering. The project will generate a paradigm shift in the approach to foundation design for deepwater hydrocarbon facilities through the innovation of mobile foundations – meaning foundations that are designed to move tolerably to accommodate displacements rather than remain stationary and resist loads. Experimental, numerical and theoretical modelling will create a new understanding of mobile foundation-seabed interaction unlocking solutio ....Mobile foundations: shifting paradigms in deep sea engineering. The project will generate a paradigm shift in the approach to foundation design for deepwater hydrocarbon facilities through the innovation of mobile foundations – meaning foundations that are designed to move tolerably to accommodate displacements rather than remain stationary and resist loads. Experimental, numerical and theoretical modelling will create a new understanding of mobile foundation-seabed interaction unlocking solutions to assess the tolerability of foundation mobility though a facility life cycle. Mobile foundations will offer a more economic and reliable basis to support subsea infrastructure, making safer and more viable the development of Australia’s deepwater reserves that are currently ‘stranded’.Read moreRead less
Four Stage Permeability Evolution Theory for Low Permeable Rocks . There is a degree of public anxiety on how unconventional gases is extracted. Horizontal drilling and hydraulic fracturing are two key enabling technologies to extract unconventional gases. But, the current study reveals well and field productivities exhibit steep declines. This implies that current practice may not be sustainable. The successful completion of this project will provide a scientific approach to look at the susta ....Four Stage Permeability Evolution Theory for Low Permeable Rocks . There is a degree of public anxiety on how unconventional gases is extracted. Horizontal drilling and hydraulic fracturing are two key enabling technologies to extract unconventional gases. But, the current study reveals well and field productivities exhibit steep declines. This implies that current practice may not be sustainable. The successful completion of this project will provide a scientific approach to look at the sustainability issue through testing a hypothesis that the properties of rock blocks between hydraulic fractures determine the sustainability of gas production instead of hydraulic fracturing. Read moreRead less
Solving the scale effect for rock discontinuities. This project aims to create a ground breaking approach for the scale-free prediction of shear strength of large in-situ rock discontinuities. Failure of rock slopes or rock cliffs can have disastrous consequences for human life, infrastructure and the economy. The stability of a fractured rock mass is controlled by the presence and characteristics of discontinuities, and any rigorous stability assessment requires quantification of discontinuity ....Solving the scale effect for rock discontinuities. This project aims to create a ground breaking approach for the scale-free prediction of shear strength of large in-situ rock discontinuities. Failure of rock slopes or rock cliffs can have disastrous consequences for human life, infrastructure and the economy. The stability of a fractured rock mass is controlled by the presence and characteristics of discontinuities, and any rigorous stability assessment requires quantification of discontinuity shear strength. The issue of rock instability affects both the civil and mining sectors. Developing a design methodology that addresses the scale effect for rock slope stability will provide safer civil environments and will allow the optimisation of resource extraction. This project will have significant economical and societal benefits which will apply not only to Australia but also internationally.Read moreRead less