Assessment of the extent of man-induced transformation of a subsoil block in upward mining using ore and host rock caving

DOI: http://dx.doi.org/10.30686/16099192-2021-4-113-118

A.M. Mazhitov Nosov Magnitogorsk State Technical University, Magnitogorsk, Russian Federation Russian Mining Industry №4 / 2021 р. 113-118

Abstract: The study provides a geomechanical assessment of the man-induced transformation of the 1st block at the Kamaganskoye deposit when the mining system is changed to sub-level caving of the ore and host rocks with no possibility of changing the order of reserve extraction. The relevance of the research results from detailed exploration activities that revealed changes in the ore body boundaries and a decrease in the ore grades. The possibility of partial mining of blocks in ore bodies No. 16 and 17 using the ore and host rock caving system has been assessed and the possibility of retaining the upward mining sequence has been established. The sequence of room mining is defined taking into account the changes in the ore body boundaries. The paper presents the results of assessing the stability of the undermined masses of ore bodies No. 16 and 17, as well as the stress-andstrain state of the rock mass at the assumed sequence of room mining. The results of mathematical modeling of the rock mass stress-and-strain state during room mining using the ore and host rocks caving system proved the technical feasibility of this solution.

Keywords: controlled man-induced transformation, deposit with a complex structure, ore caving, host rock caving, mining sequence, rock mass stability

* The work was performed with financial support from Grant of President of the Russian Federation No. MD-3602.2021.1.5

For citation: Mazhitov A.M. Assessment of the extent of man-induced transformation of a subsoil block in upward mining using ore and host rock caving. Gornaya promyshlennost = Russian Mining Industry. 2021;(4):113–118. (In Russ.) DOI 10.30686/16099192-2021-4-113-118.

Article info

Received: 01.07.2021

Revised: 20.07.2021

Accepted: 22.07.2021

Information about the author

Artur M. Mazhitov – Candidate of Technical Sciences (PhD in Engineering), Associate Professor, Head of the Department of Mining Machines and Transportation Technological Complexes, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

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