Stability of joint operation of recirculating fans in underground potash mines

Energy consumption for ventilation in underground mines makes 30% of the total power demand of a mine. The main fans effectively save energy in underground conditions. Reduction in energy input is achievable through the decrease in the external leakage and aerodynamic drag of installations of the main mine fans. Energy efficiency of airing in potash mines is also provided by recirculation ventilation. Efficiency of this approach in case of surface installation of the main fans has been practically proved many times. However, when the main fans are installed in underground mines, there appear a few cross-interfering sources of drag. Joint operation of an installation of the main mine fans and recirculation systems can cause displacement of operating points in the fan performance curves off the effective ranges, which can induce instability in operation of the fans and threaten the safety of mining. These studies are aimed at finding steady-state operating conditions for joint operation of the main mine fans and recirculation systems with regard to their cross-effect toward safe and efficient ventilation in underground mines.

Keywords: mine, installation of main fans, recirculation, ventilation network air distribution, ventilation stability.
For citation:

Kazakov B. P., Grishin E. L., Trushkova N.A. Stability of joint operation of recirculating fans in underground potash mines. MIAB. Mining Inf. Anal. Bull. 2021;(2):108119. [In Russ]. DOI: 10.25018/0236-1493-2021-2-0-108-119.


The study was supported by the Ministry of Education and Science, Grant No. 0422-2019-0145-C-01, R&D Topic No. AAA-A18-118040690029-2.

Issue number: 2
Year: 2021
Page number: 108-119
ISBN: 0236-1493
UDK: 622.4
DOI: 10.25018/0236-1493-2021-2-0-108-119
Article receipt date: 06.04.2020
Date of review receipt: 02.09.2020
Date of the editorial board′s decision on the article′s publishing: 10.01.2021
About authors:

B.P. Kazakov1, Dr. Sci. (Eng.), Chief Researcher, e-mail:,
E.L. Grishin1, Cand. Sci. (Eng.), Head of Sector, e-mail:,
N.A. Trushkova1, Engineer, e-mail:,
1 Perm Federal Research Center, Ural Branch of Russian Academy of Sciences (PFRC UB RAS), Mining Institute of Ural Branch of Russian Academy of Sciences, 614007, Perm, Russia.


For contacts:

N.A. Trushkova, e-mail:


1. De Souza E. Improving the energy efficiency of mine fan assemblages. Applied Thermal Engineering. 2015. Vol. 90. Pp. 1092–1097.

2. Allen C. L., Tran T. T. Ventilation-on-demand control system's impact on energy savings and air quality. Proceedings CIM, Montreal. 2011. Pp. 1—9.

3. Wempen J. M. Characterization of air recirculation in multiple fan ventilation systems. Department of Mining Engineering the University of Utah. 2012.

4. Flores V., Arauso L., Jara J., Raymundo C. Optimized ventilation model to improve operations in polymetallic mines in Peru. Proceedings of the 4th Brazilian Technology Symposium (BTSym’18). 2019. Pp. 515—522.

5. Kazakov B. P., Mal'tsev S. V., Semin M. A. Optimization of operating conditions of a few main fan installations in energy-efficient ventilation design for mines of complex topology. Izvestiya vysshikh uchebnykh zavedeniy. Gornyy zhurnal. 2017, no 1, pp. 101—108. [In Russ].

6. Mal'tsev S. V. Optimization of complex topology mine ventilation systems by minimized energy input criterion. Strategiya i protsessy osvoeniya georesursov. Sbornik nauchnykh trudov [Strategy and Processes of Development of Georesources: Scientific Proceedings], Issue 14. Perm, 2016, pp. 273—277. [In Russ].

7. Shonin O. B., Pron'ko V. S. Improvement of energy efficiency of mine installations of main fanes based on multi-function variable frequency drive control. Nauchno-tekhnicheskie vedomosti Sankt-Peterburgskogo gosudarstvennogo politekhnicheskogo universiteta. 2014, no 2(195), pp. 49–57. [In Russ].

8. Puchkov L. A., Bakhvalov L. A. Metody i algoritmy avtomaticheskogo upravleniya provetrivaniem ugol'nykh shakht [Methods and algorithms of automatic ventilation control in coal mines], Moscow, Nedra, 1992, 399 p.

9. Tsoy S. V. Avtomaticheskoe upravlenie ventilyatsionnymi sistemami shakht [Automatic ventilation control in mines], Alma-Ata, Nauka, 1975, 366 p.

10. Mester I. M., Zasukhin I. N. Avtomatizatsiya kontrolya i regulirovaniya rudnichnogo provetrivaniya [Automation of control and adjustment of mine ventilation], Moscow, Nedra, 1974, 240 p.

11. Chatterjee A., Zhang L., Xia X. Optimization of mine ventilation fan speeds according to ventilation on demand and time of use tariff. Applied Energy. 2015. Vol. 146(C). Pp. 65–73.

12. Kruglov Yu. V., Levin L. Yu. Optimization principles for automatic ventilation control in underground mines. Izvestiya Tul’skogo gosudarstvennogo universiteta, Nauki o zemle. 2010, no 2, pp. 104–109. [In Russ].

13. Kruglov Yu. V., Semin M. A. Improvement of optimized ventilation algorithm for complex topology ventilation networks. Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo. 2013, no 9, pp. 106–115. [In Russ].

14. Kazakov B. P., Mal'tsev S. V., Semin M. A. Methods of ventilation efficiency improvement in mines of complex topology. MIAB. Mining Inf. Anal. Bull. 2017, no 4, pp. 51—58. [In Russ].

15. Nakaryakov E. V., Klyukin Yu.A. Stability of paralleled operation of axial fans in the system of automatic ventilation control. Problemy razrabotki uglevodorodnykh i rudnykh poleznykh iskopaemykh. 2017, no 1, pp. 382—385. [In Russ].

16. Kazakov B. P., Isaevich A. G., Mal'tsev S. V., Semin M. A. Automated processing of air depression survey data for correct mathematical modeling of mine ventilation network. Izvestiya vysshikh uchebnykh zavedeniy. Gornyy zhurnal. 2016, no 1, pp. 22—30. [In Russ].

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