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ArticleName Ventilation of roadways using kinetic energy of air flows
DOI 10.17580/gzh.2021.10.14
ArticleAuthor Kazakov B. P., Shalimov A. V.

Mining Institute, Ural Branch, Russian Academy of Sciences—Division of the Perm Federal Research Center, Ural Branch, Russian Academy of Sciences, Perm, Russia:

B. P. Kazakov, Chief Researcher, Doctor of Engineering Sciences
A. V. Shalimov, Leading Researcher, Doctor of Engineering Sciences,


The article presents the studies into effectiveness of ventilation by local sources of draught installed in the brattice-free roadways. The relevance of this topic is defined by the need to improve mine ventilation, prevent leaks in the conditions of insufficient fresh air, as well as to remove harmful impurities from faces. The efficiency of ejector units is analyzed versus the aerodynamic drag of a ventilation section and a cross section area of a mixing chamber. On this basis, the optimal parameters for the ejector unit to reach the maximum performance are determined. The numerical simulation of the ejection effect in large crosssection roadways has found that a part of the kinetic energy of the jet is spent for the formation of an air vortex which plays the role of a mixing chamber. The problem connected with insufficient airing is eliminated by means of series arrangement of fans, which reduces air circulation and leakage in minedout voids, and ensures air feed to work spaces. The variants of application of air curtains to reduce air leaks via roadways which cannot be shut by brattices are discussed. It is shown that this method is costeffective when pressure drops are under 2 daPa and is ineffective in prevention of leaks via installations above ground. In ventilation of dead-end roadways, the increase in the distance between the end of the vent pipe and the face surface prevents the damage of the vent pipe by blasted rock chips and reduces the labor input of installation and dismantling. The analytical estimation of the permissible spacing for the face surface–vent pipe is carried out as function of excess flow rate as against the required air flow. The ventilation simulation was carried out using the theory of turbulent jets and elements of numerical simulation in specialized software products for the verification of analytical dependences.
The study was supported by the Russian Foundation for Basic Research and by the Perm Krai Government within the framework of R&D Project No. 20-45-596021 r_NOTS_Permskii krai.

keywords Roadway, air flow rate, aerodynamic drag, local ventilation fan, ejector, recirculation, air curtain, long-range jets

1. Vasyuchkov Yu. F., Melnik V. V. Heating coal massif from the channel of underground gasification. Eurasian Mining. 2018. No. 2. pp. 3–7. 79–83. DOI: 10.17580/em.2018.02.01
2. Prokopenko S. A., Lesin Yu. V., Li A. A., Shadrin V. G. Dialectical contradictions and resolutions toward innovative development and ecological safety enhancement in modern-day coal mining. Eurasian Mining. 2020. No. 1. pp. 79–83. DOI: 10.17580/em.2020.01.16
3. Kaledina N. O., Kobylkin S. S., Kobylkin A. S. The calculation method to ensure safe parameters of ventilation conditions of goaf in coal mines. Eurasian Mining. 2016. No. 1. pp. 41–44. DOI: 10.17580/em.2016.01.07
4. Gendler S. G., Savenkov E. A. Usage pattern of jet fans for ventilation of railway tunnels. GIAB. 2015. Special issue 7. Industrial safety of enterprises of mineralresource complex in the XXI century. pp. 26–31.
5. Savenkov E. A. Mathematical simulation of the workings ventilation which is carried out by the free jet of air created by the fans located before their brow. GIAB. 2015. No. 4. Special issue 17. Air safety in end-to-end ventilation of traffic tunnels during construction or re-construction. pp. 22–30.
6. Kazakov B. P., Shalimov A. V. Mathematical modeling of operation of ejection plants in ventilation of underground excavations. Izvestiya vuzov. Gornyi zhurnal. 2004. No. 2. pp. 39–44.
7. Martynenko O. G., Korovkin V. N. On the calculation of turbulent fan jets. Journal of Engineering Physics and Thermophysics. 2008. Vol. 81, No. 1. pp. 62–67.
8. Alymenko D. N. Airing ejection plant design to operate as a main mine fan. GIAB. 2005. Subject Appendix : Aerology. pp. 124–127.
9. Zhang X., Zhang Y., Tien J. C. The Efficiency Study of the Push-pull Ventilation System in Underground Mine Mine. Proceedings of the 2011 Coal Operators’ Conference. Wollongong, 2011. pp. 225–230.
10. Kazakov B. P., Semin M. A., Maltsev S. V. Mathematical simulation of gypsum mine block ventilation using Venturi fans. Izvestiya Tulskogo gosudarstvennogo universiteta. Nauki o Zemle. 2018. No. 3. pp. 245–255.
11. Kazakov B. P., Shalimov A. V., Levin L. Yu. Ventilating large cross-section tunnels with using ventilator working without a brattice. Izvestiya Tulskogo gosudarstvennogo universiteta. Nauki o Zemle. 2010. No. 2. pp. 89–97.
12. Long-Xing Yu, Tarek Beji, Fang Liu, Miao-Cheng Weng, Bart Merci. Analysis of FDS 6 simulation results for planar air curtain related flows from strai ght rectangular ducts. Fire Technology. 2018. Vol. 54, Iss. 2. pp. 419–435.

13. Tsoy S. Air distribution control in roadways with counter-current air flows using air curtains. Vestnik Akademii nauk Kazakhskoy SSR. 1958. No. 8. pp. 68–74.
14. Havet M., Rouaud O., Solliec C. Experimental investigations of an air curtain device subjected to external perturbations. International Journal of Heat and Fluid Flow. 2003. Vol. 24, Iss. 6. pp. 928–930.
15. Nikolaev A. V., Alymenko N. I., Kamenskikh A. A., Fet Sh. K., Nikolaev V. A. Results of modelling of mine ventilation with air curtain installed into downcast and upcast shafts. Vestnik PNIPU. Geologiya. Neftegazovoe i gornoe delo. 2017. Vol. 16, No. 3. pp. 291–300.
16. Medvedev B. I. Examination of an air curtain as a remedy for air leakage via shaft heapsteads. Izvestiya vuzov. Gornyi zhurnal. 1965. No. 6. pp. 84–86.
17. Federal rules and regulations in the area of industrial safety «Safety rules in mining operations and solid minerals processing». Iss. 78. Series 03. Inter-branch documents for the issues of industrial safety and soil protection. Moscow : ZAO NTTs PB, 2015. 273 p.
18. Hong K., Liu Z., Wang X., Zhu Z. Simulation of dust migration at working faces during drill-blasting construction of underground hydropower houses. Shuili Fadian Xuebao. 2016. Vol. 35, No. 2. pp. 124–130.
19. Grimitlin M. I., Timofeeva O. N., Elterman E. M., Elyanov L. S. Ventilation and heating of shipyards. 2nd enlarged and revised edition. Leningrad : Sudostroenie, 1978. 239 p.
20. García-Díaz M., Sierra C., Miguel-González C., Pereiras B. A Discussion on the Effective Ventilation Distance in Dead-End Tunnels. Energies. 2019. Vol. 12, Iss. 17. 3352. DOI: 10.3390/en12173352
21. Branny M., Jaszczur M., Wodziak W., Szmyd J. Experimental and numerical analysis of air flow in a dead-end channel. Journal of Physics: Conference Series. 2016. Vol. 745, Iss. 3. 032045. DOI: 10.1088/1742-6596/745/3/032045

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