Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes
Digital simulation of mine fires and explosions is an important stage in the process of developing technical solutions and measures aimed at improving the safety of personnel involved in underground mining. Correct simulation results determine the effectiveness of decisions in the event of an actual...
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| Format: | Article |
| Language: | English |
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National University of Science and Technology MISiS
2023-06-01
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| Series: | Горные науки и технологии |
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| Online Access: | https://mst.misis.ru/jour/article/view/506 |
| _version_ | 1797776302665629696 |
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| author | Maxim O. Perestoronin Oleg S. Parshakov Maxim D. Popov |
| author_facet | Maxim O. Perestoronin Oleg S. Parshakov Maxim D. Popov |
| author_sort | Maxim O. Perestoronin |
| collection | DOAJ |
| description | Digital simulation of mine fires and explosions is an important stage in the process of developing technical solutions and measures aimed at improving the safety of personnel involved in underground mining. Correct simulation results determine the effectiveness of decisions in the event of an actual emergency situation. In this regard, due attention should be paid to each stage of the simulation, and especially to the initial stage of model parameterization. This study formulates a general principle for determining the parameters of mine fire and explosion models, in order to assess their development using the AeroNetwork analytical package. Such parameters in the event of a fire are heat and gas (afterdamp) releases. In the event of an explosion, excessive pressure at the shock front in the explosion origin. It has been established that when simulating a fire, it is advisable to use equivalent heat and gas releases determined by the content of combustible components in the combustion origin. In the event of burning mining equipment, these parameters can be calculated on the basis of the technical characteristics of a machine. Furthermore, when simulating an unauthorized explosion of explosives, the excess pressure determined by the dimensionless length of the active combustion area is calculated taking into account the weight and specific heat of an explosive, as well as the geometric parameters of a mine working. When simulating an explosion of a methane-air mixture (firedamp), the excess pressure is calculated taking into account the gas content of rocks in terms of free combustible gases, the length of a blast cut, the size of the area of increased fracturing, and the lower explosive limit of methane. Based on the proposed principle of the parameterization of emergency models, as an example, a model of fire and explosion development in existing extended dead-end workings (more than 1000 m long) passing coaxially to each other at different heights was developed. The numerical simulation of different emergency situations in workings was carried out, taking into account performing mining in difficult mining conditions. |
| first_indexed | 2024-03-12T22:48:04Z |
| format | Article |
| id | doaj.art-4b9f067ad3b848ca9aecdc8bc24d1725 |
| institution | Directory Open Access Journal |
| issn | 2500-0632 |
| language | English |
| last_indexed | 2024-03-12T22:48:04Z |
| publishDate | 2023-06-01 |
| publisher | National University of Science and Technology MISiS |
| record_format | Article |
| series | Горные науки и технологии |
| spelling | doaj.art-4b9f067ad3b848ca9aecdc8bc24d17252023-07-20T19:52:32ZengNational University of Science and Technology MISiSГорные науки и технологии2500-06322023-06-018215016110.17073/2500-0632-2022-10-13Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modesMaxim O. Perestoronin0https://orcid.org/0009-0003-0203-9304Oleg S. Parshakov1https://orcid.org/0000-0001-5545-442XMaxim D. Popov2https://orcid.org/0009-0007-6388-608XMining Institute of the Ural Branch of the Russian Academy of Sciences, Perm, Russian FederationMining Institute of the Ural Branch of the Russian Academy of Sciences, Perm, Russian FederationMining Institute of the Ural Branch of the Russian Academy of Sciences, Perm, Russian FederationDigital simulation of mine fires and explosions is an important stage in the process of developing technical solutions and measures aimed at improving the safety of personnel involved in underground mining. Correct simulation results determine the effectiveness of decisions in the event of an actual emergency situation. In this regard, due attention should be paid to each stage of the simulation, and especially to the initial stage of model parameterization. This study formulates a general principle for determining the parameters of mine fire and explosion models, in order to assess their development using the AeroNetwork analytical package. Such parameters in the event of a fire are heat and gas (afterdamp) releases. In the event of an explosion, excessive pressure at the shock front in the explosion origin. It has been established that when simulating a fire, it is advisable to use equivalent heat and gas releases determined by the content of combustible components in the combustion origin. In the event of burning mining equipment, these parameters can be calculated on the basis of the technical characteristics of a machine. Furthermore, when simulating an unauthorized explosion of explosives, the excess pressure determined by the dimensionless length of the active combustion area is calculated taking into account the weight and specific heat of an explosive, as well as the geometric parameters of a mine working. When simulating an explosion of a methane-air mixture (firedamp), the excess pressure is calculated taking into account the gas content of rocks in terms of free combustible gases, the length of a blast cut, the size of the area of increased fracturing, and the lower explosive limit of methane. Based on the proposed principle of the parameterization of emergency models, as an example, a model of fire and explosion development in existing extended dead-end workings (more than 1000 m long) passing coaxially to each other at different heights was developed. The numerical simulation of different emergency situations in workings was carried out, taking into account performing mining in difficult mining conditions. https://mst.misis.ru/jour/article/view/506mineunderground fireexplosionemergencyshock wavesimulationaeronetworkparameterizationsafety |
| spellingShingle | Maxim O. Perestoronin Oleg S. Parshakov Maxim D. Popov Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes Горные науки и технологии mine underground fire explosion emergency shock wave simulation aeronetwork parameterization safety |
| title | Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes |
| title_full | Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes |
| title_fullStr | Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes |
| title_full_unstemmed | Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes |
| title_short | Parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes |
| title_sort | parameterization of a ventilation network model for the analysis of mine working emergency ventilation modes |
| topic | mine underground fire explosion emergency shock wave simulation aeronetwork parameterization safety |
| url | https://mst.misis.ru/jour/article/view/506 |
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