Development of cyclic loading models for application in offshore geotechnics. The response of foundations for offshore structures to repetitive (cyclic) loads is a critical but still inadequately understood area of offshore geotechnics, with designs still usually based on simple modifications to monotonic loading conditions. In this project, a definitive framework for modelling cyclic behaviour will be established. Using this new approach, numerical models will be developed to address problems a ....Development of cyclic loading models for application in offshore geotechnics. The response of foundations for offshore structures to repetitive (cyclic) loads is a critical but still inadequately understood area of offshore geotechnics, with designs still usually based on simple modifications to monotonic loading conditions. In this project, a definitive framework for modelling cyclic behaviour will be established. Using this new approach, numerical models will be developed to address problems at all scales from fundamental constitutive behaviour of soils to macroscopic models for large foundation systems. Their application to offshore design problems (for renewable energy as well as traditional oil and gas applications) will be assessed. Recommendations to current international guidelines will also be made.Read moreRead less
Deep Coal Mining. The occurrence of progressively larger gas outbursts, coal bumps, and the potential for the catastrophic collapse of coal pillars is of increasing importance as mining drives deeper in seams rich in methane and other hydrocarbons. This study will address this issue by examining the roles of stress level, strain-rate, gas desorption rate, and drained and undrained gas and liquid pressures in the dynamic failure of coal, while simultaneously evaluating the promise and fidelity of ....Deep Coal Mining. The occurrence of progressively larger gas outbursts, coal bumps, and the potential for the catastrophic collapse of coal pillars is of increasing importance as mining drives deeper in seams rich in methane and other hydrocarbons. This study will address this issue by examining the roles of stress level, strain-rate, gas desorption rate, and drained and undrained gas and liquid pressures in the dynamic failure of coal, while simultaneously evaluating the promise and fidelity of a variety of hazard indices and precursive signals.Read moreRead less