Changes in the enthalpy of the ventilation stream during operation of diesel equipment in underground facilities in the permafrost zone

DOI: https://doi.org/10.30686/1609-9192-2026-5-200-205

Читать на русском языке V.Y. Pankov
North-Eastern Federal University, Yakutsk, Moscow, Russian Federation
Mining Industry Journal (Gornaya Promyshlennost) №5/ 2026 p. 200-205

Summary: The purpose of this work was to determine the effect of diesel equipment on the thermal regime of mine workings of underground operations in the permafrost zone. The paper analyzes literature sources which state that in mechanized mines and mines, diesel equipment is a determining factor in formation of the thermal regime, and there is a direct relationship between the number of operating machines, their power and the increment of temperature in the mine working. Since certain literary data contradict each other, studies were carried out and calculated dependencies were obtained to determine the increment of enthalpy and temperature in underground facilities during operation of diesel machines and mechanisms. On the basis of qualitative and quantitative analyses, it was established that an increment in the enthalpy (temperature) of the air in the mine workings of underground facilities does not depend on the power and the number of operating diesel units and is fully determined by the initial temperature of the ventilation stream and the thermodynamic efficiency of the engines. It has been established that the increment in the temperature is mainly determined by the efficiency of the operating diesel units, and it increases with an increase in the initial temperature of the ventilation stream: moreover, the higher the efficiency of the units, the smaller is the effect of the initial air temperature on the thermal regime in the mine working. It is shown that even with the minimum thermodynamic efficiency of the diesel equipment equal to 0.4, the temperature increment cannot exceed 6.0°C at the initial positive air temperature, and 5.0°C at the initial negative air temperature in the mine working.

Keywords: underground structure, mine working, thermal regime, diesel equipment, ventilation, enthalpy, temperature, heat source, calculation method

Acknowledgements: The author expresses his gratitude to Professor A.F. Galkin for the idea behind this work and for his assistance in preparing the article for publication.

For citation: Pankov V.Y. Changes in the enthalpy of the ventilation stream during operation of diesel equipment in underground facilities in the permafrost zone. Mining Industry Journal (Gornaya Promyshlennost). 2026;(5):200–205. https://doi.org/10.30686/1609-9192-2026-5-200-205

Article info

Received: 02.05.2026

Revised: 23.06.2026

Accepted: 05.07.2026

Authors info

Pankov Vladimir Yu – Cand. Sci. (geol.-mineral.), Associate Professor, Department of Highways and Airfields, Faculty of Road Construction, M.K. Ammosov North-Eastern Federal University, Yakutsk, Russian Federation; https://orcid.org/0000-0003-4933-0265; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

References

1. Galkin A.F., Pankov V.Yu. Absolute heat sources as a method to check the accuracy of temperature prediction in underground structures within cryolithozone. Mining Science and Technology (Russia). 2023;8(3):207–214. https://doi.org/10.17073/2500-0632-2023-04-105

2. Galkin A.F., Pankov V.Y., Fedorov Y.V. Temperature change in the chambers of underground structures when operating diesel units. Security Issues. 2022;(4):27–33. (In Russ.) https://doi.org/10.25136/2409-7543.2022.4.38938

3. Смирнов Ю.М., Гендлер С.Г., Костылев П.П., Кулинич С.С. Исследование тепловыделений при работе дизельного оборудования . В кн.: Физические процессы горного производства. Л.: ЛГИ; 1976. Вып. 3. С. 77–80.

4. Kazakov B.P., Zaitsev A.V. Study of the formation of thermal regimes in deep mines. Perm Journal of Petroleum and Mining Engineering . 2014;(10):91–97. (In Russ.)

5. Kurilko A.S., Khokholov Yu.A., Soloviev D.E. Features of formation of temperature conditions in placer mines equipped with self-propelled machines in permafrost zone. Gornyi Zhurnal . 2015;(4):29–32. (In Russ.) https://doi.org/10.17580/gzh.2015.04.06

6. Galkin A., Pankov V. Formation of thermal regime in a permafrost area mine. In: Beskopylny A., Shamtsyan M. (eds) XIV International Scientific Conference “INTERAGROMASH 2021”, Rostov-on-Don, February 24–26, 2021 . Cham; Springer, 2021, pp 205–213. https://doi.org/10.1007/978-3-030-80946-1_21

7. Galkin A. F., Dormidontov A. V., Kurta I. V., Korotkova K. B. Influence of diesel vehicles on the temperature regime of mine workings. Natural and Technical Sciences . 2018;(5):84–86. (In Russ.)

8. Vernigor V.M., Morozov K.V., Bobrovnikov V.N. On approaches to designing of thermal regime at ore mines under permafrost conditions. Journal of Mining Institute. 2013;205:139–140. (In Russ.) Available at: https://pmi.spmi.ru/pmi/article/view/5508 (accessed: 05.04.2026).

9. Galkin A.F. The thermal condition of the mines in cryolite zone. Journal of Mining Institute. 2016;219:377–381. (In Russ.) https://doi.org/10.18454/PMI.2016.3.377

10. Yanchenko G.A., Kirichenko I.V. Engineering methods: calculation of humid air density. Mining Informational and Analytical Bulletin. 2008;(11):112–115. (In Russ.) Available at: https://giab-online.ru/files/Data/2008/11/4_YAnchenko3.pdf (accessed: 05.04.2026).

11. Czarick M., Fairchild В. Cold, humid air is lighter than cold, dry air. Poultry Housing Tips. 2009;21(12). Available at: http://www.poultryventilation.com/wp-content/uploads/vol21n12.pdf (accessed: 05.06.2026).

12. Minyaev V.V. Computation of atmosphere parameters considering air humidity. erald of the Bauman Moscow State Technical University. Series Natural Sciences. 2004;(2):106–120. (In Russ.) Available at: https://vestniken.bmstu.ru/articles/425/425.pdf (accessed: 05.04.2026).