ИССЛЕДОВАНИЕ ПРОЦЕССА ПРОВЕТРИВАНИЯ КАРЬЕРА ПРИ ВАРИАЦИИ УГЛА ОТКОСА БОРТА И ПАРАМЕТРА ФОНОВОЙ СТРАТИФИКАЦИИ НА БАЗЕ МЕТОДА ЧИСЛЕННОГО МОДЕЛИРОВАНИЯ

Abstract

The results of the study are presented on the basis of the method of numerical modeling of the process of natural ventilation of the open pit during blasting operations with variations of two factors: natural ‒ the parameter of background stratification and technological ‒ the angle of slope of the side of the open pit. Numerical experiments were performed on the basis of a modified two-dimensional computer model of the microclimate of an open pit in a non-specialized COMSOL program code. Quantitative indicators of the influence of an increase in the inversion state of the atmosphere on an increase in the level of pollution and, accordingly, the time of natural ventilation, as well as a decrease in the asymmetry in the spatial distribution of atmospheric pollution of the open pit were obtained. Based on the analysis of the structure and quantitative indicators of velocity fields, it was shown that a decrease in the slope angle of the side of the open pit with a recirculating ventilation scheme leads to an increase in the time of natural ventilation