STUDIES OF MANIFESTATION FEATURES OF THERMOMECHANICAL EFFECTS IN DIFFERENT GEOMATERIALS AT PERIODIC LOADING CLOSE TO THE LIMIT MODES
D. I. Blokhin1, V. I. Sheinin2
1Mel’nikov Institute of Comprehensive Exploitation of Mineral Resources, Russian Academy of Sciences, Moscow, Russia
2Gersevanov Research Institute of Bases and Underground Structures, Moscow, Russia
Keywords: Геоматериалы, циклическое нагружение, напряжения, деформации, тепловое излучение, Geomaterials, cyclic loading, axial stress, axial strain, infrared radiation
Abstract
The possibility to obtain the information on the flow of mechanical processes in geomaterials beyond the limits of elastic deformation using the variations in the IR radiation intensity was studied. The results of experiments on recording the parameters of thermal radiation from the surface of rock salt and concrete samples at close to limiting periodic loading conditions under uniaxial compression are presented. The qualitative identity of the records of mechanical parameters and thermal radiation variations characterizing changes in the stress-strain state of the tested geomaterial samples is shown. The differences in the recorded manifestations of thermomechanical effects in concrete and rock salt under the specified deformation mode are established.
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