Forecast of the geomechanical state of the rock mass in difficult mining and geological conditions based on in-situ test data
K.N. Konstantinov1, Yu.A. Starcev1, E.A. Lobanov2, T.S. Mushtekenov3, A.A. Tsymbalov3
1 Mining Institute Kola Science Centre of the Russian Academy of Sciences, Apatity, Russian Federation
2 Kanex Shakhtostroy LLC, Moscow, Russian Federation
3 Polar Branch of MMC Norilsk Nickel, Norilsk, Russian Federation
Russian Mining Industry №5 / 2024 p.129-134
Abstract: In order to support production processes at the Oktyabrsky deposit of rich sulfide ores at a depth of 2000 m two exploration workings were driven in 2020-2023 at the Levels of -1650m and -1750 m. with a length of about two kilometers each. In order to provide ongoing mining operations with a forecast of the geomechanical state of the rock mass, field studies were performed in advanced boreholes using ultrasonic logging (UL), borehole telemetry, and core disking. The UL method is used to study the elastic properties and fracturing of rocks. The fracturing of the bore of the advanced boreholes and the presence of various geological and structural heterogeneities are estimated by the telemetry method. The core disking method is based on the ability of hard rocks to brittle fracture. It is established that the vector of the main compressive stresses acts in the rock mass of the studied workings in different directions. Individual cases of identifying the core disking zones and "tracks" on the periphery of the advanced boreholes are not representative in their parameters for classifying these sites as "rock bump hazardous". Thus, a combination of the obtained data proves the efficiency of the applied forecast of the geomechanical state of the advance boreholes, while the information on the geomechanical state of the rock mass in the vicinity of the advance boreholes made it possible to timely make recommendations regarding the mining prcedures in order to ensure the stability of the workings being constructed.
Keywords: geomechanics, advance boreholes, ultrasonic logging, core disking method, fracturing, longitudinal wave velocity, telemetry, stress field, impact hazard, stability of workings
For citation: Konstantinov K.N., Starcev Yu.A., Lobanov E.A., Mushtekenov T.S., Tsymbalov A.A. Forecast of the geomechanical state of the rock mass in difficult mining and geological conditions based on in-situ test data. Russian Mining Industry. 2024;(5):129–134. (In Russ.) https://doi.org/10.30686/1609-9192-2024-5-129-134
Article info
Received: 25.07.2024
Revised: 27.08.2024
Accepted: 16.09.2024
Information about the authors
Konstantin N. Konstantinov – Researcher, Mining Institute Kola Science Centre of the Russian Academy of Sciences, Apatity, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Yuri A. Starcev – Leading Technologist, Mining Institute Kola Science Centre of the Russian Academy of Sciences, Apatity, Russian Federation
Evgeniy A. Lobanov – Managing Director, Kanex Shakhtostroy LLC, Moscow, Russian Federation
Talgat S. Mushtekenov – Counselor to the Director’s Office, Polar Branch of MMC Norilsk Nickel, Norilsk, Russian Federation
Andrey A. Tsymbalov – Deputy Director for Mining Operations, Polar Branch of MMC Norilsk Nickel, Norilsk, Russian Federation
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