Analysis of microcirculation flows between microzones in face areas of blind shear stopes in potash mines with different ventilation methods

Fainburg, G.Z.; Isaevich, A.G.

doi:10.25018/0236-1493-2020-3-0-58-73

Cited by 3 publications

(1 citation statement)

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“…The mechanized development of minerals is accompanied by a high level of dustiness in blind headings. For instance, at the potash mines of the Russian Federation, research recorded values of the concentration of fine dust thousands of times higher than the safe limit for people, which is 5 mg/m 3 [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Combined Ventilation System for Dust Reduction in Blind Headings of Potash Mines

Sukhanov,

Maltsev,

Semin

et al. 2024

MMEP

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Ensuring safe and comfortable working conditions for miners in potash mines is an urgent and unresolved problem, primarily due to the high intensity of dust emissions. This is especially true for poorly studied situations when the main dust source is the area of ore transfer from the borer miner to the shuttle car. In this paper, we explore the possibilities of reducing dustiness in the atmosphere of a blind heading with an operating borer miner through the implementation of a combined ventilation system. This system integrates both exhaust and forcing ventilation ducts extending to the mouth of the blind heading. A significant innovation of this system is the prioritization of the exhaust fan over the blower fan. The efficacy of the proposed system has been evaluated both theoretically and experimentally. The theoretical analysis involved conducting 3D numerical simulations of dust-air distribution in a blind heading. The stationary turbulent flow of the air-dust mixture in the mine was calculated, taking into account the operating borer miner. The model's validity was confirmed against data from a full-scale experiment. A noticeable reduction in dust concentration was observed in the work areas of the borer miner and shuttle car when using the combined ventilation system compared to forcing ventilation. Based on these model findings, pilot tests of the effectiveness of the combined ventilation system were carried out in a real heading of a potash mine. They showed a reduction in dust concentration by 40-52% compared to the original version of the forcing ventilation system.

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Section: Introductionmentioning

confidence: 99%

Optimization of the Combined Ventilation System for Dust Reduction in Blind Headings of Potash Mines

Sukhanov,

Maltsev,

Semin

et al. 2024

MMEP

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The Analysis of Potash Salt Dust Deposition in Roadways

2021

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Study on the Dust Content in Dead-End Drifts in the Potash Mines for Various Ventilation Modes

et al. 2022

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This article deals with the reduction of dust content in the working areas of potash mines in the conditions of operating combines. This problem is topical, since the high dust concentrations in the atmosphere of dead-end drifts lead to the development of occupational diseases among miners, and traditional methods of dust control are often unsuitable for potash salts conditions. We describe the results of experimental studies carried out for the potash mine of the Verkhnekamskoye potassium-magnesium salt deposit. Next, a mathematical model of the dust–air mixture dynamics is formulated and parametrized. The Euler–Euler approach and the model of a homogeneous multicomponent medium are used. The results of a simulation for two ventilation systems (forced and exhaust) are presented. Several options for air flow rates are considered. A conclusion is reached about the most effective parameters of ventilation systems, which allows for minimizing the concentration of dust in the zone of the combine driver.

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Analysis of microcirculation flows between microzones in face areas of blind shear stopes in potash mines with different ventilation methods

Cited by 3 publications

References 0 publications

Optimization of the Combined Ventilation System for Dust Reduction in Blind Headings of Potash Mines

Optimization of the Combined Ventilation System for Dust Reduction in Blind Headings of Potash Mines

The Analysis of Potash Salt Dust Deposition in Roadways

Study on the Dust Content in Dead-End Drifts in the Potash Mines for Various Ventilation Modes

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