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REVEAL OF INTERRELATIONSHIP BETWEEN STRESS STATE AND SEISMIC ACTIVITY IN THE TECTONIC STRESSED ROCK MASS
Abstract
The paper presents the investigation results of rock mass state change regularities taking into account geological and mining factors by complex methods. The authors consider complexing of results from the cluster analysis of seismic events with numerical modelling of stress state in the rock mass on a case study of the Yukspor deposit (the Khibiny rock massif, Murmansk region, Russia). The time and dimensional analysis of the Yukspor depositпїЅs seismic regime was performed. The cluster groups of seismic events were separated. These groups are associated with different rock mass regions. It is shown that a level of seismic activity in the clusters varies based on geological and mining factors. The 3-D modelling of stress-strain state in the rock mass was carried out taking into account geological and mining factors. The locations of stress concentration zones were determined where damage processes can happen with larger intensity. As a result, the correspondence between stress concentration zones and the level of seismic activity has been determined. It has been shown that applying of the approach based on two methods gives more accurate estimate of the rock mass state. So, the approach allows tracing geological media behavior in all conditions and stages of its evolution, including natural-engineering systems.
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