A Method to Determine Aerodynamic Drag Coefficient in Copper–nickel Mine Shafts

Мальцев, С. В.; Семин, М. А.; Kormshchikov, D. S.

doi:10.1134/s1062739120060150

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…Microclimate parameters depend on many factors. First of all, it depends on the climatic conditions of the area in which the enterprise is located, the depth of occurrence and removal of workings from the air supply shafts [13]. Also, other authors [14] found that the air temperature in mine workings depends on the heat exchange of air with the mountain range and heat exchange due to heat sources.…”

Section: Introductionmentioning

confidence: 99%

Provision of Personal Protection Equipment, According to the Risk of Exposure to Harmful Industrial Factors during Copper-Polymetallic Ore Mining

Abikenova¹,

Daumova²

2023

IJSSE

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The article addresses the issue of providing personal protective equipment, taking into account the risk of exposure to harmful factors of production during the extraction of copper ore in ore deposits located at great depths, i.e., underground mining. The working conditions of miners are characterized by a complex of harmful production factors, which include, above all, high dust and gas pollution of the air and a heated microclimate. The investigation revealed that workers in underground mines are exposed to the harmful effects of chemical factors. The evaluation of working conditions based on microclimatic factors showed an excess of air temperature (4-12 times) and relative humidity (3-10 times) in the workplace. Mathematical data processing has shown that the distribution of dangerous and harmful factors is subject to polynomial dependence. Mathematical data processing showed that the distribution of hazardous and harmful factors is subject to polynomial dependence. Increased air temperatures at a number of production sites, air pollution with dust and gases require a revision of the list of personal protective equipment, depending on the class of working conditions, taking into account the established standards for output. The authors provide recommendations for the introduction of a new range of personal protective equipment, depending on the presence and degree of exposure to harmful factors of production.

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Section: Introductionmentioning

confidence: 99%

Provision of Personal Protection Equipment, According to the Risk of Exposure to Harmful Industrial Factors during Copper-Polymetallic Ore Mining

Abikenova¹,

Daumova²

2023

IJSSE

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Mathematical Modeling of Air Distribution in Mines Considering Different Ventilation Modes

Семин

Levin

2023

Mathematics

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The calculation of air distribution in large mine ventilation networks is usually carried out by numerically solving a system of equations representing Kirchhoff’s circuit laws. This formulation of the problem traditionally only considers the frictional air resistance of straight sections of mine airways. However, when analyzing the changing ventilation modes, it is also important to correctly consider the shock losses, which sufficiently affect the redistribution of airflows. The reason is that the shock loss factor strongly depends on the airflow rates at the junctions of mine airways. This paper presents a mathematical model of a ventilation network that considers shock losses. The model considers steady-state air distribution as well as natural draft. The significance of the shock was confirmed with a practical example; we describe the application of the proposed mathematical model for the analysis of air distribution in the ventilation network of a potash mine during planned airflow reversal.

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A Method to Determine Aerodynamic Drag Coefficient in Copper–nickel Mine Shafts

Cited by 2 publications

References 3 publications

Provision of Personal Protection Equipment, According to the Risk of Exposure to Harmful Industrial Factors during Copper-Polymetallic Ore Mining

Provision of Personal Protection Equipment, According to the Risk of Exposure to Harmful Industrial Factors during Copper-Polymetallic Ore Mining

Mathematical Modeling of Air Distribution in Mines Considering Different Ventilation Modes

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