Analysis of physical properties of granular materials on their numerical models (2D case)

¹ T.F. Gorbachev Kuzbass State Technical University, Mining Institute, 650000 Kemerovo, 28 Vesennyaya st., Russian Federation
² Technische Hochschule Georg Agricola, Centre for Drive and Lifting Technology ZAFT, Bochum, Germany

^* Corresponding author: markovso@kuzstu.ru

Abstract

The paper describes a method for determining the density and specific surface of the package of rock particles represented by discs with the size corresponding to the size of the rock fragments of real dump massifs (2D case). The packing method of the particles corresponds to the schemes of dumping used in open-pit mining - areal and peripheral ones. The influence of boundaries, in which the dump is located, on the physical characteristics of this massif - density and porosity - is revealed. It was revealed that the way of formation of the bulk of particles affects its density, especially at the boundaries of the massif. The massif of particles formed in accordance with the area technology of dumping has a denser composition and is less affected by the effect of its boundaries than the massif formed in accordance with the peripheral technology of dumping. The applied method of determining the physical characteristics of the bulk medium differs from the statistical methods (e.g., Monte Carlo) and is well-proven for static media, such as dumps and filtering massifs in open-pit mining.