DOI: 10.18503/1995-2732-2026-24-2-40-46
Abstract
The article presents the results of research on adapting the non-transport overburden mining technology to the conditions of the cryolithozone, conducted at the Mining Institute of the North of the Siberian Branch of the Russian Academy of Sciences (MIN SB RAS), Yakutsk. Considerable attention in scientific research is devoted to improving non-transport mining methods. As is well known, non-transport mining technology is the most cost-effective compared to other mining technologies. However, most studies are focused on deposits located in temperate latitudes rather than in permafrost regions. The negative temperature of rocks at such deposits gives them high strength, making drilling and blasting operations a mandatory technological process for rock preparation prior to excavation. However, after blasting, the fragmented rock mass tends to refreeze, which significantly complicates excavation and reduces the efficiency of non-transport mining technology. As a result, the development of such refrozen permafrost rocks by dragline considera-bly increases the operating cycle time and leads to a substantial decrease in the overall productivity of the excavator. This problem is common for coal enterprises in the Arctic region and determines the need for the search and develop-ment of special technological solutions. The article presents studies of the specific features of non-transport mining technology for permafrost rocks (using the Kangalassky brown coal deposit as an example) under the severe natural and climatic conditions of the North. These studies are aimed at solving problems related to the optimization and adaptation of existing as well as new efficient methods for mining coal deposits in the cryolithozone. The developed methods and technological solutions are intended to reduce the adverse effects of the refreezing of blasted permafrost rocks and to ensure the efficient operation of excavation equipment under permafrost conditions.
Keywords
Non-transport technology, dragline, cryolithozone, permafrost rocks, refreezing.
For citation
Maksimov M.S. Non-Transport Overburden Mining Technology for Stratified Deposits in the Permafrost Zone. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magni-togorsk State Technical University]. 2026, vol. 24, no. 2, pp. 40-46. https://doi.org/10.18503/1995-2732-2026-24-2-40-46
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