On the Determination of Coordination Numbers of Coupled DEM-DFN Model for Modeling Fractured Rocks

Natural fractured rocks usually contain background granular media and multi-scale fractures. The coordination number is a crucial factor to characterize the connection of microstructural elements. determination numbers for modeling essential interpret distribution cracks related micromechanical properties. We have built consistent workflow discrete element models (DEMs) coupled with fracture networks (DFNs). This DEM-DFN model could provide simple formulation high calculation efficiency more realistic detailed description system. A series numerical experiments are set up, aiming correlate window radius, particle size, crack length, which will benefit selection measuring based on characteristics. determined in can be used identify patterns spatial distribution.