Bulat A.F., Bunko T.V., Kokoulin I.Ye., Yashchenko I.A., Ponomarenko V.V. Simulation of dynamic phenomena in the ventilation network due to sudden gas outburst

Details
Parent Category: Geo-Technical Mechanics, 2020
Category: Geo-Technical Mechanics, 2020, № 152

Geoteh. Meh. 2020, 152, 22-31

https://doi.org/10.15407/geotm2020.152.022

SIMULATION OF DYNAMIC PHENOMENA IN THE VENTILATION NETWORK DUE TO SUDDEN GAS OUTBURST

1Bulat A.F., 1Bunko T.V., 1Kokoulin I.Іe., 2Yashchenko I.О.1Ponomarenko V.V.

1Institute of Geotechnical Mechanics named by N. Poliakov of National Academy of Sciences of Ukraine, 1Ministry of Power Engineering of Ukraine

UDC [622.451:622.831.322].001.57

Language: Ukrainian

Annotation.

An increase in the pace of cleaning and preparatory work, a transition to deeper horizons, a high concentration of machines and mechanisms in places where minerals are excavated and transported increase the likelihood of one of the most difficult and dangerous types of underground accidents - sudden outbursts of coal, rock and gas. In the event of a sudden outburst, the air distribution existing in the ventilation network experiences a sharp dynamic effect, leading to a violation of the stability of the ventilation of the workings close to the center of the outburst and the overturning of the air flow in them. The methane released in this case forms an atmosphere dangerous for humans in the adjacent workings. The size of the gas contamination zone depends on many factors: the intensity of the outburst, the ventilation scheme of the mine, the presence of ventilation facilities, their number, and others, and can become the object of special studies, including the study of the outburst process itself and its interaction with the ventilation network. The specificity of the occurrence of an oytburst as a type of accidents does not allow obtaining statistical and experimental results directly during its course, which greatly complicates the study of this process. In this regard, the most acceptable research method that allows assessing the results of the interaction of the outburst with the ventilation network and, guided by them, to develop effective measures to eliminate its consequences and restore the normal functioning of the mine, is the simulation method using a PC. The article analyzes the stages of changes in the mining-geological and mining-technical conditions preceding the occurrence of the outburst, the stage of the outburst, the calculation formulas are given, by which it is possible to evaluate the configuration and dynamics of the development of the zone polluted with methane as a result of the outburst. The results of modeling the gas-dynamic manifestations of the outburst and its effect on the state of mine ventilation are of great importance in ventilation calculations in emergency modes in order to use the possibilities of ventilation effects on an emergency, limit emergency zones and increase the effectiveness of eliminating the consequences of an accident.

Keywords: 

accident, sudden outburst, gas contamination zone, stages of the outburst, mining and geological and mining conditions

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About the authors

Bulat Anatolii Fedorovych, Academician of the National Academy of Science of Ukraine, Doctor of Technical Sciences (D. Sc), Professor, Director of the Institute, Institute of Geotechnical Mechanics named by N. Poliakov of National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Bunko Tetіana Viktorivna,Doctor of Technical Sciences (D.Sc), Senior Researcher, Senior Researcher in Department of problems of underground mines in great depths, Institute of Geotechnical Mechanics named by N. Poliakov of National Academy of Sciences of Ukraine (IGTM NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. net

Kokoulin Ivan Yevgenovych, Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher in Department of problems of underground mines in great depths, Institute of Geotechnical Mechanics named by N. Poliakov of National Academy of Sciences of Ukraine (IGTM NASU), Dnipro, Ukraine

Yashchenko Igor Oleksiyovych, Candidate of Technіcal Sciences (Ph.D.), Chіef of the Department of Labour Protection, Industrial Safety and Civil Defence, Ministry of Power Engineering of Ukraine, Kyiv, Ukraine.