Mining Institute of the Ural Branch of the Russian Academy of Sciences, Perm, Russia

M. D. Popov, Engineer at Aerology and Thermophysics Department
E. L. Grishin, Head of Aerological Safety Sector at Aerology and Thermophysics Department, Candidate of Engineering Sciences, aeroevg@mail.ru
S. Ya. Zhikharev, Chief Researcher, Doctor of Engineering Sciences
A. V. Shalimov, Researcher at Aerology and Thermophysics Department, Doctor of Engineering Sciences

The extension and depth of underground mining operations increase these days. The length of the air ways to underground facilities grows substantially in this case, and separate ventilation of roadways becomes a challenging problem. This article describes the integrated analysis results on safety of sequential ventilation circuits in copper–nickel and diamond mines. The analysis included the experimental measurement of gas composition of mine air and the modeling of gas distribution in mine ventilation networks. The experimental measurements in sequential ventilation with regard to the dynamic change in concentrations of toxic and explosive gases during a working shift are described. The in-situ measurement results were used to validate the model of the mine ventilation network to obtain an integral pattern of gas distribution. The design procedure for the required air quantity for the sequential ventilation is proposed.
The study was supported by the Russian Science Foundation, Project No. 19-77-30008.

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