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.

Acknowledgements:

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: aero_kaz@mail.ru,
E.L. Grishin1, Cand. Sci. (Eng.), Head of Sector, e-mail: aeroevg@mail.ru,
N.A. Trushkova1, Engineer, e-mail: aero.nadezhda@gmail.com,
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: aero.nadezhda@gmail.com.

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