Cheban A.Yu. Increasing the Efficiency of Mining of Complex-Structured Bedded Deposits by Using Modernized Surface Miners

DOI: 10.18503/1995-2732-2023-21-4-5-12

Abstract

Relevance. Bedded deposits of minerals, in particular coal, oil shale, phosphorites, predominantly have a complex structure with interlayers of waste rocks or substandard inclusions in producing beds. Complex-structured deposit mining without providing the required level of selection during extraction leads to significant losses of minerals and their dilution. To improve the quality of selective extraction in complex-structured bedded deposit mining, mining companies involve technologies using surface miners; however, in some cases, layers of strong rocks in the bed limits the possibility of using surface miners and makes their operation low-yielding. Objective. Improving the technology of layer-by-layer mining of complex-structured beds by using a modernized surface miner, ensuring an increase in the efficiency of loosening strong rock layers by their preliminary disintegration using a solution of surfactants. Results. The paper proposes a technical and technological solution to mining of complex-structured beds composed of rocks that significantly differ in strength, using a surface miner with equipment for the disintegration of strong rock interlayers of small thickness by forming cracks and delivering into them a solution of surfactants. The upgraded surface miner is equipped with a milling working body with a variable arrangement of cutters to ensure reasonable modes of loosening minerals and strong rock interlayers. Practical Relevance. The proposed technical and technological solution may be used in mining of complex-structured coal beds. This will significantly increase performance of surface miners when extracting strong rock interlayers due to their preliminary disintegration, resulting in lower cost of operation and higher profitability of mining.

Keywords

complex-structured bed, strong rock interlayer, surface miner, loosening performance, milling working body, formation of cracks, disintegration

For citation

Cheban A.Yu. Increasing the Efficiency of Mining of Complex-Structured Bedded Deposits by Using Modernized Surface Miners. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2023, vol. 21, no. 4, pp. 5-12. https://doi.org/10.18503/1995-2732-2023-21-4-5-12

Anton Yu. Cheban – PhD (Eng.), Associate Professor, Lead Researcher, Mining Institute of the Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences (MI KhFRC FEB RAS), Khabarovsk, Russia. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID 0000-0003-2707-626X

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