Jan Olof Selroos - Underground nuclear waste storage (Presentation) скачать в хорошем качестве

Jan Olof Selroos - Underground nuclear waste storage (Presentation)

This presentation was presented during the 4th Cargèse Summer School on Flow and Transport in Porous and Fractured Media in 2018. Don’t hesitate to have a look on other lectures of the summer school on our channel! More information on the Summer School on https://cargese2018.sciencesconf.org/ ** The lecture will briefly introduce the concept of and motivations for geological disposal of nuclear waste. Focus will then be on groundwater flow and solute transport modelling relevant for site-descriptive understanding and safety assessment of such repositories. Examples will be drawn from recent studies performed within the Swedish and Finnish nuclear waste programs. Specifically, the use of discrete fracture network (DFN) models to understand flow and solute transport characteristics in sparsely fractured rock will be introduced. Furthermore, safety assessment applications for the different time periods studied such as open repository, temperate, permafrost and glacial conditions will be exemplified. Also analogue field studies recently performed at the Greenland ice sheet supporting assumptions made for glacial and permafrost simulations will be discussed. Finally a few examples will be provided on geological and hydrogeological measurements that can be made in tunnels and boreholes in order to locally condition stochastic DFN models. The purpose of such conditioning will be described, and the resulting reduction in uncertainty illustrated. The relevance of some of the ENIGMA experiments to be conducted at the Äspö Hard Rock laboratory will be put in context of the goals of increased process understanding and increased prediction confidence. Find the slide presentation on https://perso.univ-rennes1.fr/joris.h... #GeologicalDisposal #NuclearWaste #Models #SafetyAssessment