ELECTROMAGNETIC EMISSION ASSOCIATED WITH FRACTURE OF ROCK SAMPLES
A. A. Bizyaev1,2, A. G. Vostretsov1,2, I. I. Smirnyagin1, M. D. Sharapova1
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State Technical University, Novosibirsk, Russia
Keywords: Dynamic events induced by rock pressure, stress-strain behavior, electromagnetic emission, lab-scale tests, rockburst prediction criteria
Abstract
The article presents the fracture test data of rock samples with the porphyroblastic, granoblastic lepidoblatic and laminated structure. The tests were carried out on lab-scale tester ASI-2. The test samples were subjected to uniaxial compression until discontinuity with synchronous recording of associated electromagnetic emission, load and displacements along the compression axis. The laminated rock samples in fracture show anisotropy of geophysical parameters and electromagnetic emission.
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