Analysis of the floor pillars and room fenders stability in the room-and-pillar mining system at the Mayskoye deposit

DOI: https://doi.org/10.30686/1609-9192-2025-4-165-169

Читать на русскоя языкеV.V. Arno1, E.P. Kolesnichenko2, I.Yu. Garifulina1, N.E. Lomakina1
1 North-Eastern State University, Magadan, Russian Federation
2 Lomonosov Moscow State University, Moscow, Russian Federation
Russian Mining Industry №4 / 2025 p. 165-169

Abstract: The article presents the results of a comprehensive analysis of the floor pillars and room fenders stability for the Mayskoye deposit based on geomechanical studies. The key parameters of the room-and-pillar mining system with backfilling of the excavated space are examined, including the impact of the dip angle of the ore body, the depth of mining operations, as well as the mechanical properties of the host rock and backfill material on the optimum dimensions of the pillars. Numerical modeling was performed using advanced software suites, which allowed estimating the stress-and-strain state of the rock mass under various mining scenarios. Special attention is paid to technological solutions aimed at improving pillar stability and mining efficiency, including the choice of a rational mining sequence, optimization of the room geometry and backfill parameters. It is shown that the deposit dip angle and mining depth have a significant impact on the load distribution in pillars, which should be taken into account when designing the mining systems. Practical recommendations are provided to reduce the risk of the roof collapse and improve the safety of mining operations. The research results can be used in the design and operation of similar fields with the room-and-pillar mining and backfill systems. The paper discusses parameters of the room-and-pillar mining system with backfilling of the mined space as well as the impact of the dip angle of the ore body and the depth of the mining operations on the dimensions of the pillars. Technological solutions are presented to ensure the stability and efficiency of mining operations

Keywords: floor pillars, room fenders, geomechanical studies, pillar stability, room-and-pillar mining system, backfilling of the mined space, Mayskoye deposit, stress-and-strain state

For citation: Arno V.V., Kolesnichenko E.P., Garifulina I.Yu., Lomakina N.E. Analysis of the floor pillars and room fenders stability in the room-and-pillar mining system at the Mayskoye deposit. Russian Mining Industry. 2025;(4):165–169. (In Russ.) https://doi.org/10.30686/1609-9192-2025-4-165-169

Article info

Received: 17.05.2025

Revised: 10.06.2025

Accepted: 18.06.2025

Information about the authors

Veronika V. Arno – Cand. Sci. (Eng.), Associate Professor, Polytechnic Institute, North-Eastern State University, Magadan, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Eva P. Kolesnichenko – Student of the field of training “State and Municipal Audit”, Higher School of Public Audit, Lomonosov Moscow State University, Moscow, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Irina Yu. Garifulina – Senior Lecturer of the Department of Geology and Mining, Polytechnic Institute, North-Eastern State University, Magadan, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Natalia E. Lomakina – Senior Lecturer of the Mining Department, Polytechnic Institute, North-Eastern State University, Magadan, Russian Federation; е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Contribution

V.V. Arno – research idea, formulating the conflict between the current paradigm and the new facts, drafting the research paper.

E.P. Kolesnichenko, I.Yu. Garifulina – evaluation of the results and correction of the paper written.

N.E. Lomakina – evaluation of the research results, sampling and collection of the research material.

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