Influence of the stope temperature on the loss of ore mass due to its freezing in bottom ore drawing under overlying broken rocks

DOI: https://doi.org/10.30686/1609-9192-2025-5-79-83

Читать на русскоя языкеV.P. Zubkov, D.N. Petrov
N.V. Chersky Institute of Mining of the North of Siberian Branch of the Russian Academy of Sciences, Yakutsk, Russian Federation
Russian Mining Industry №5 / 2025 p. 79-83

Abstract: The article presents the results of experimental studies of the effect of the stope temperature on the loss rates during bottom ore drawing under overlying broken rocks in underground mining of ore deposits in the cryolithozone. As a result of the experiments, it was found that when drawing ore mass with the moisture content of 1%, losses due to its freezing occur when the stope temperature drops to –1°C and with a further decrease to –5°C the losses increase more than 4 times. When the ore mass with the moisture content of 1% is drawn at the stope temperature of –7°C, the drawing stops completely as the result of the ore hang-ups in the stope due to its freezing. When the ore is drawn without watering, no significant increase in losses takes places with a similar decrease in the temperature. The results obtained make it possible to explain the mechanism of the broken ore losses due to freezing during drawing, to determine the temperature limits of their occurrence, as well as the limits of the stope temperature at which ore drawing from the stope becomes impossible.

Keywords: underground mining, ore deposits, cryolithozone, stope temperature, ore drawing, modeling of the bottom ore drawing, freezing of the ore mass, losses of the ore mass

Acknowledgements: The authors of the article express their gratitude to their colleagues who participated in the research. The research was carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation (theme No. 0297-2021-0020, reg. No. 122011800086-1) shared core facilities of the Federal Research Center «Yakutsk Science Center SB RAS» grant No. 13.ЦКП.21.0016.

For citation: Zubkov V.P., Petrov D.N. Influence of the stope temperature on the loss of ore mass due to its freezing in bottom ore drawing under overlying broken rocks. Russian Mining Industry. 2025;(5):79–83. (In Russ.) https://doi.org/10.30686/1609-9192-2025-5-79-83

Article info

Received: 23.05.2025

Revised: 10.07.2025

Accepted: 16.07.2025

Information about the authors

Vladimir. P. Zubkov – Cand. Sci. (Eng.), Senior Researcher, Deputy Director for Science, N.V. Chersky Institute of Mining of the North of Siberian Branch of the Russian Academy of Sciences, Yakutsk, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Dmitriy N. Petrov – Cand. Sci. (Eng.), Head of the Laboratory, Institute of Mining of the North named after N.V. Chersky of the Siberian Branch of the Russian Academy of Sciences, Yakutsk, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

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