Malinovskii E. G., Akhpashev B. A., Golovanov A. I., Gildeev A. M. Comparing the results of physical modeling and full-scale experiment on ore face draw in the system of block caving for fat deposits. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2019; 7: 34–44 (In Russ.). DOI: 10.21440/0536-1028-2019-7-34-44

Introduction. The task of ore and host rock caving method efective parameters determination in the
conditions of thick fat deposits is by no means trivial due to a lack of adequate international and local
experience. Optimal parameters of ore draw are therefore best determined based on physical and
mathematical modeling, taking into account the data of full-scale experiments.
Research aim. Based on physical and mathematical modeling and full-scale experiment data, the present
research aims to identify the patterns of rock mass draw in the context of particular mining and geological
conditions of a deposit. Using the obtained data on discharge fgures formation kinematics, the research
aims to determine the medium fowability indicators required to create a mathematical model of ore draw
in similar conditions.
Research methodology includes physical modeling of the ore face draw with of the medium extraction and
fowability indicators determination.
Results. Comparison of full-scale experiments results with physical modeling results revealed sufcient
convergence in the areas of losses and dilution, in the similarity of broken rock draw patterns, in the draw
fgure formation. Base on physical modeling, the dependence between the medium fowability indicator
and the discharge fgure height required to mathematically simulate the draw.
Summary. The medium fowability characteristics, defned during physical modeling and full-scale
experiments and incorporated in the mathematical model of draw, will allow to optimize the parameters of
the development systems with ore and host rocks caving at thick fat deposits.

Key words: fat deposits; system of development; block-caving; face draw; physical modeling; full-scale
experiment.

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