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Vol. 17 (2014 year), No. 2

S.A. Kozyrev, P.V. Amosov
Ways of atmosphere normalization of deep open-pits

The paper presents results on numerical modelling of processes of air currents distribution in the pit space and normalization of pit atmosphere by a pressure system of ventilation through ventilation raise workings and horizontal excavations. Significant changes have been recorded in the structure of high-velocity currents in the pit space when using alternative ways of air supply. The calculation results on removal of harmful impurities from the pit space at different velocities of air supply through excavations have been given.

(in Russian, стр.7, fig. 7, tables. 0, ref 10, Adobe PDF, Adobe PDF 0 Kb)

Vol. 17 (2014 year), No. 2

V.A. Masloboev, A.A. Baklanov, S.I. Mazukhina, O.Yu. Rigina, P.V. Amosov
Numerical modelling of dusting processes in ANOF-2 tailings impoundment

The paper considers issues related to study of multi-dispersed admixture transfer processes raised by wind current. Basing the 2D numerical CFD-model the influence of dusting surface height on the atmosphere surface layer downstream at dusting intensity variation has been evaluated. It has been shown that at dusting surface height growth the significant increase (from 50 % to 150 %) of contaminant concentrations in the atmosphere is predicted. The authors have come to the conclusion that full-scale 3D modelling study is required.

(in Russian, стр.9, fig. 7, tables. 2, ref 4, Adobe PDF, Adobe PDF 0 Kb)