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Laboratory Researches of Intensity Vibrating Signal and Acoustic Issue at Along One Axis Compression of Samples of Ferruterous Quartzites
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 13th Conference and Exhibition Engineering Geophysics 2017, Apr 2017, Volume 2017, p.1 - 10
Abstract
In order to improve the rockburst hazard forecast of rock mass in the development of korobkovskoe iron ore Deposit of KMA, in the laboratory conducted geophysical investigations of vibro-seismic method and method of acoustic emission under uniaxial compression of rock samples, selected in the mountain range of the mines. The dependence of the intensity of the vibration on the magnitude of mechanical stresses in the sample has non-monotonic character, and promising to identify rockburst-hazardous sites of the massif is the density parameter of the modules of amplitudes of acoustic emission signals. Also confirmed that the intensive destruction of rocks in the zone of influence of the free surface in acoustic emission signal is dominated by bipolar pulses.