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Vol. 29 (2026 year), No. 1, DOI: 10.21443/1560-9278-2026-29-1

Lyubin A. N.
Increase of labor safety processes of underground mining during development of flat thin ore deposits

The paper considers one of the acute problems of the mining industry – the mechanization of mining processes during the development of flat thin ore deposits. The use of mobile complexes of self-propelled technological equipment (SPTE) using traditional stoping excavation schemes is limited by the requirement to ensure the value of extracted reserves close to their balance value. As a technical solution to this problem, selective excavation of ore mass and rock can be used. To increase the efficiency of this mining technique, selective excavation by double-cut stoping with blasting of the soil waste rock in the second cut has been considered. The given technical solution of the mining technology by double-cut stoping is characterized as an independent direction for improving the mining methods of flat thin ore deposits. For the conditions of the Karnasurt mine, the cost of performing the processes of blasting and ore mass haulage in each of the two considered options for stoping excavation has been calculated. At the same time, the option using of the SPTE complex has been considered with the width of the first cut of 3.5 and 7.0 m, and the second cut in both cases – 3.5 m. An analysis of the calculations performed has shown that doubling the width of the first cut makes it possible to reduce the cost difference between the blasting and haulage processes in the compared variants by 5 and 6 %.

(in Russian, стр.10, fig. 1, tables. 6, ref 6, AdobePDF, AdobePDF 0 Kb)