SUBSTANTIATION OF AN ADVANCED CLASSIFICATION OF GEODYNAMIC PHENOMENA IN MINES
A. V. Lovchikov
Mining Institute, Kola Scientific Center, Russian Academy of Sciences, Apatity, Russia
Keywords: Rockbursts, earthquakes, geodynamic phenomena, self-similarity, classification, energy
Abstract
It is shown that all rockburst-hazardous ore deposits in Russia are exposed to gravitational-tectonic stress state of rocks, in which the prevailing role is played by horizontal stresses due to mountain-forming processes in the Earth's crust exceeding the vertical stresses several times. These horizontal stresses are the main cause of dynamic rock pressure manifestations. It is shown that energy characteristics of dynamic phenomena in mines can be calculated by the formula for seismic moment in the earthquake source, since there is no difference in seismic occurrences both in natural processes and in mine seismicity. Based on the law of self-similarity of the seismic process at different scale levels, a classification of dynamic rock pressure manifestations in mines has been developed, in which each type is characterized by the released energy and area (volume) of manifestations in mine workings.
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