METHOD TO PREDICT LOCAL BUMP HAZARD FROM SEISMOLOGICAL MONITORING Russian patent published in 2006 - IPC E21C39/00 

FIELD: mining, particularly devices for testing in situ the hardness or other properties of minerals.

SUBSTANCE: method involves arranging seismic detector system within the limits of mine fields with taking into consideration actual sensitivity of each seismic station; recording seismic events; calculating coordinates and seismic energy of the events from time of first direct longitudinal waves arrival; determining "mechanisms" of the centers. Mine field zones located inside isolines with value equal to 15, are assumed to be dangerous in terms of dynamic rock pressure development. For seismic events characterized by quadrant distribution of the first arrival sign spatial movement plane locations are determined and main stress action directions are estimated in rock massif under control. Explosive equivalent of dynamic rock pressure development is determined.

EFFECT: increased reliability of bump hazard prediction.