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

Title of the article: Assessment of the impact of mass technological explosions on the geodynamic state of the rock mass and impact indicators

Year: 2026, Issue: 1, Pages: 125-137

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

Index UDK: 622.831

DOI: 10.26730/1999-4125-2026-1-125-137

Abstract: Man-made seismic activity accompanying the development of iron ore shock-hazardous deposits in Gornaya Shoria, including blasting, was considered. After massive technological explosions, geodynamic phenomena of various intensities are recorded. An assessment of the impact of blasting operations on the energy class of explosions, shocks and the magnitude of events during the development of blocks by systems without and with the laying of a cleaning space is given. The method of mathematical modeling established the stress-strain state of the massif in the area of blocks (chambers). It has been established that zones of inelastic deformations are formed in pillars between chambers, in ledges of spent chambers, as well as along auger ports and strokes. When mining ore reserves during the year, subhorizontal and subvertical stresses are redistributed in the rock mass. The effect of the mass of explosive charges on the magnitude, energy class of explosions and shocks, as well as the formation of seismic activity zones in the mine field were revealed. During mining of ore reserves by the system of subfloor collapse on subfloors from the horizon (mountains) -55 to the mountains. -340 m of the Western, North-Western and Eastern sections, where the volume of tunneling of preparatory workings amounted to more than 1200 m, and rifled workings - 41336 m, with the volume of crude ore production of 1700 thousand tons. The volume of production under the system of development of a storey forced collapse with ore breaking on compensation chambers and clamping medium amounted to more than 370 thousand tons per blocks. In the process of cleaning, the state of the massif was estimated by magnitude according to the formulas proposed by VNIMI, Chinakal Institute of Mining Siberian Branch and Kemerovo seismic station. A safe level of magnitude was revealed when blasting charges with different explosive weights in the range from 0.3 to 16.0 tons. Adjustment of the parameters of drilling and blasting operations made it possible to reduce losses and dilution by 2%.

Key words: rock formation explosion impact seismic energy deposit ore sites mining

Receiving date: 15.12.2025

Approval date: 15.01.2026

Publication date: 19.03.2026

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