Bedniuk O., Cheberiachko Yu., Stolbchenko O., Shevchenko V., Luts I., Bolibrukh B. Influence of dynamic characteristics of ventilation flow on the intensity of dust transi-tion to the suspended state
- Details
- Parent Category: Geo-Technical Mechanics, 2025
- Category: Geo-Technical Mechanics, 2025, Issue 174
Geotech. meh. 2025, 174, 21-33
INFLUENCE OF DYNAMIC CHARACTERISTICS OF VENTILATION FLOW ON THE INTENSITY OF DUST TRANSITION TO THE SUSPENDED STATE
1Dnipro University of Technology
2M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine
3Lviv Polytechnic National University
UDC 622.411.51:622.232.72
Language: English
Abstract. Estimation of the amount of dust transitioning to the suspended state from the reflected rock mass during the operation of the roadheader. In this paper, analytical methods are used to determine the amount of dust transitioning from the reflected rock mass to the suspended state during the operation of the roadheader, taking into account the peculiarities of the operation of tunnelling machines with a boom-shaped working body and the dynamic characteristics of the ventilation flow. It has been established that as a result of the interaction of the ventilation flow with the rock mass broken by the roadheader’s actuator, the dynamic characteristics of the ventilation flow have a significant impact on dust formation. Based on the analysis of the process of dust generation during the destruction of a rock mass by a roadheader and subsequent transportation of the rock mass, a formula is recommended for determining the amount of dust which becomes suspended and enters the mine atmosphere. The dependence of the mass of dust formed per unit time on the capacity of the roadheader and is a constant value (within this capacity), and the mass of dust ‘blown out’ from the destroyed part of the massif increases with an increase in the air flow velocity. A mathematical model of the transition of dust to the suspended state and its entry into the mine atmosphere has been developed and theoretically substantiated, which differs from the known ones in that it takes into account the process of dust rise due to the influence of dynamic characteristics of the ventilation flow. Based on the analysis of the influence of the dynamic characteristics of the ventilation flow on the intensity of dust inflow into the face space during the operation of the roadheader, an expression for determining the mass of dust formed as a result of the air flow was obtained. The derived expression provides a predictive tool for estimating the intensity of dust inflow into the mine atmosphere under specific operational and ventilation parameters. This capability is indispensable for the proactive design and optimization of integrated dust control strategies, including the strategic placement of dust suppression systems, local exhaust ventilation, and the determination of optimal airflow rates that balance the need for gas dilution with the risk of excessive dust suspension. By moving from empirical observation to a quantifiable model, this work lays a scientific foundation for enhancing air quality and ensuring miner safety in mechanized underground coal mining.
Keywords:amount of dust, dynamic characteristics of the ventilation flow, broken rock mass, suspended dust
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About the authors
BednyukOleksandr,Postgraduate Student at the Department of Labour Protection and Civil Security, Dnipro University of Technology, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. (Corresponding author),ORCID 0009-0006-3346-9317
Cheberiachko Yuriy, Doctor of Technical Science (D.Sc.), Professor, Professor of Labour Protection and Civil Security Department, Dnipro University of Technology, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. ORCID 0000-0003-3281-7157
Stolbchenko Оlena,Candidate of Technical Sciences (Ph.D.), Associate Professor, Associate Professor of the Department of Labor safety and civil security, Dnipro University of Technology, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0003-2003-4382
Shevchenko Volodymyr, Doctor of Technical Sciences (D.Sc.), Professor, Scientific Secretary of the Institute, Head of Department of Vibratory Transporting Systems and Complexes, M.S. Poliakov Institute of Geotechnical Mechanics of the NAS of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0002-7290-811X
Luts Ihor, Candidate of Technical Sciences (Ph.D.),Associate Professor, Researcher in the Department of Vibratory Transporting Systems and Complexes, M. S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0003-0333-5730
Bolibrukh Boris, Doctor of Technical Science (D.Sc.), Professor, Professor of the Department of Civil Security, Lviv politechnik National university, Lviv, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0002-9879-7454