Modeling Evolution of Damage in Rock Specimens under Loading
L. A. NAZAROV1, L. A. NAZAROVA1, P. A. TSOI1, L. V. TSIBIZOV2
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
2Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090 Russia
Keywords: лабораторный эксперимент, породный образец, бразильский метод, спекл-фотография, деформация, нарушенность, корреляционный анализ, laboratory experiment, rock specimen, Brazilian Test, speckle-photography, deformation, damage, correlation analysis
Abstract
Based on the integrated analysis of micro-strains obtained using speckle-photography method in Brazilian Test of rock specimens and analytically calculated elastic fields of stresses and strains, the authors show that there exist significant correlation dependences between the damage in a certain domain of a rock specimen and the level of the external load. Given a verified geomechanical model describing properly evolution of stresses in a rock specimen, this fact offers pre-requisites for estimation of damage in different areas of a rock specimen by monitoring condition only in one of such areas.
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