Authors: A.A. Eremenko, A.I. Kopytov, V.N. Filippov, A.V. Volkov

Title of the article: Assessment of the geodynamic state of the rock mass during blasting of ore reserves at the Tashtagolsky and Sheregeshevsky fields

Year: 2023, Issue: 3, Pages: 70-78

Branch of knowledge: 2.8.6. Geomechanics, destruction of rocks by explosion, mine aerogasdynamics and mining thermophysics

Index UDK: 622.271

DOI: 10.26730/1999-4125-2023-3-70-78

Abstract: An assessment of the mining-geological and geomechanical conditions for the development of areas of the Tashtagol and Sheregesh deposits is given. Areas related to "hazardous" rock bumps are identified. An analysis was made of the ore mining operations by sections and blocks. The development of ore reserves was carried out mainly by the systems of level-room and sub-level caving with hardening backfilling of the mined-out space. It has been established that during explosions, the intensity of shocks with different stress energy release classes in the mine field increases. Experimental studies have been carried out and an assessment of the geodynamic state of the rock mass during breaking by blasting has been given. The change in the number of shocks, their energy, monthly, during the year, and the largest seismic events that caused rock collapses, lining failures and powerful vibrations on the earth's surface are considered. It was determined that the largest number of shocks corresponds to classes 1 and 2 amounting to 87.77%. The effect of the mass of explosion charges on the stress energy release class of shocks by months of the year is established. The main geodynamic activity during the year was noted in the Novy Sheregesh area. Recommendations are given on the safety of mining operations and the reduction of stresses in the rock mass.

Key words: Ores and host rocks geodynamic phenomena mining operations stress energy release class seismic events discharge wells

Receiving date: 21.03.2023

Approval date: 15.06.2023

Publication date: 30.06.2023

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