Philippe Davy - Modeling fractured rocks mass properties with DFN: concept, theories and issues скачать в хорошем качестве

Philippe Davy - Modeling fractured rocks mass properties with DFN: concept, theories and issues

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/ ** DFN – Discrete Fracture Network – is primarily a modeling framework for fractured geological systems that aims to integrate field data into simulations of flow and/or deformation. It is complementary to, or competing with, continuum methods with both advantages of easily integrating the statistical properties of fracture networks, and of not assuming any homogenization scale. The conference aims to take stock of the recent work on DFN modeling and applications in hydrogeology or rock mechanics. We present the complete workflow from integrating and extrapolating fracture data into DFN models, to predicting transfer and mechanical properties of fractured rock masses. We discuss some fundamentals issues about the DFN modeling framework - e.g., upscaling and critical scales, determinism and intrinsic variability, statistical and model uncertainties, critical structures for flow (HYDRO-DFN) of for geomechanics (MECHA-DFN). We illustrate these issues with theoretical concepts, numerical experiments and case studies. We discuss in particular the minimum complexity of models required to stay consistend with data. Find the slide presentation on https://perso.univ-rennes1.fr/joris.h... #DiscreteFractureNetwork #Modeling #Upscaling #Uncertainties