ASSESSMENT OF GEODYNAMIC ACTIVITY OF THE ROCK MASS IN THE MINE FIELD OF THE KAZSKY DEPOSIT
A. A. Eremenko, V. N. Filippov, S. M. Smirnov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Rock pressure, geodynamic phenomena, rockburst hazard forecast, core disking, acoustic emission, seismic monitoring. mine field
Abstract
A brief assessment of the mining, geological and geomechanical conditions for the development of production horizons of the Central Stocks section of the Kazskoye field is given. The analysis of rock pressure manifestation in a dynamic form is carried out. The stress-strain state of the rock mass has been diagnosed. The measurement results of strain increment level using depth and contour benchmarks are presented and the category of rockburst hazard is determined for different horizons. The stress-strain state of the rock mass was measured with the SB-32M device according to the parameters of acoustic emission. The time criteria for assessing the rockburst hazard were adjusted on the basis of comparing the results of recording the parameters of acoustic emission and the level of stresses obtained from the strain increment results at the stations of deep and contour benchmarks. A project has been developed for the installation of mobile seismic monitoring for recording events in stoping influence zone.
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