Известия Томского политехнического университета: Инжиниринг георесурсов (Oct 2020)

EFFICIENCY OF COMBINING ORE MINING TECHNOLOGIES WITHIN AN ORE FIELD

  • Vladimir I. Golik,
  • Victor G. Lukyanov,
  • Nikolay M. Kachurin,
  • Galina V. Stas

DOI
https://doi.org/10.18799/24131830/2020/10/2847
Journal volume & issue
Vol. 331, no. 10
pp. 32 – 39

Abstract

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The relevance of the study. The article is devoted to the urgent problem of improving the technology for developing complex structural rocky deposits to increase the production of rare and valuable metals contained in ores, the deficiency of which increases with the development of scientific and technological progress. The purpose of the study is to determine the conditions for combining development systems of different classes in order to increase the possibilities for selection of mining operations using various options for ore extraction in adjacent mining areas. The methodology of the study. The basis of the study is the economic calculation of possible combinations within the ore field based on experimentally obtained information about the ore-bearing massif. Results. The authors have characterized the ore bedding conditions at a specific rock deposit of complex structure, carried out the engineering geological zoning of the rocks of the ore-bearing massif with a differentiated assessment of geological and structural disturbances in magnitude and direction and made the forecast of the possible behavior of mine workings, by analogy with the practice, under the influence of fault structures and macrocracks. At the level of expert evaluation, the appropriateness of using a layered or chamber development system with the laying of technological voids hardening mixtures is determined. For areas containing the main reserves of the ore balance sheet of the deposit, the effectiveness of development systems was assessed by comparing alternative options for layer and chamber excavation, as well as the same shopping. Conclusions. The efficiency of ore mining is achieved by selection of reserves mining within the same ore field when combining mining systems with the maximum allowance for the geological and structural factors of ore localization and the mechanical and physical properties of ore-bearing rocks.

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