Substantiation of underground geotechnology at the combined mining of ore deposits on the basis of accounting the features of transients

Within the new methodological approach, a scientific and technical substantiation of the optimal underground geotechnology with the combined development of ore deposits based on the characteristics of transients was completed. Based on the analysis of experience of the combined development of ore deposits, the transition process features were revealed: a sharp decrease in the production capacity of the enterprise and an increase in capital investments, and its main goal was determined — to create the most favorable conditions for the transformation of the mining enterprise from one stable state to another. The types of transition areas are systematized depending on the scheme of conducting open and underground mining during the transition period. Four rational options for underground geotechnology that take into account specific factors and conditions formed during open mining, providing optimal parameters for the development of underground mining at a new stable stage, are developed. The method of economic and mathematical modeling for the conditions of the of the Safyanovsky copper deposits investigated the influence of specific factors on the gross profit — the depth of the open pit, which varies in the range from 140 to 380 m, and the depth of the reserves under open pit, which varies in the range from 80 to 320 m. The best option for underground geotechnology, which provides for the phased opening of underquarry reserves by a autoincline from the open pit and an runaway from the surface, mining the transition zone by level-chamber system with filling under ore insulating pillar formed within the transition zone, and the further development of the main reserves by level-chamber system with filling under filling mass, is established by the criterion of net present value.

Keywords: combined mining, underground geotechnology, transient, transition areas, scheme of opening, mining system, specific factors, economic and mathematical modeling.
For citation:

Sokolov I.V., Antipin Y.G., Smirnov A.A., Nikitin I.V. Substantiation of underground geotechnology at the combined mining of ore deposits on the basis of accounting the features of transients. MIAB. Mining Inf. Anal. Bull. 2020;(3-1):326-337. [In Russ]. DOI: 10.25018/02361493-2020-31-0-326-337.


the Research was carried out within the framework of the state task № 07500581-19-00 on the Topic № 0405-2019-0005.

Issue number: 3
Year: 2020
Page number: 326-337
ISBN: 0236-1493
UDK: 622.272.06
DOI: 10.25018/0236-1493-2020-31-0-326-337
Article receipt date: 21.11.2019
Date of review receipt: 12.02.2020
Date of the editorial board′s decision on the article′s publishing: 20.03.2020
About authors:

Sokolov I.V.1, Dr. Sci. (Eng.), full member of the Academy of mining sciences, acting director,
Antipin Yu.G.1, Cand. Sci. (Eng.), head of the laboratory of underground geotechnology,
Smirnov A.A.1, Cand. Sci. (Eng.), senior research worker of the laboratory of underground geotechnology,
Nikitin I.V.1, research worker of the laboratory of underground geotechnology,
1 The Institute of Mining of the Ural branch of the Russian Academy of Sciences, 620075, Ekaterinburg, Russia.


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