Instrumentation System for Synchronous Recording of EME and Mechanical Deformation Parameters in Lab-Scale Tests of Rock Specimens

The instrumentation system designed for the synchronous recording of electromechanical emission and mechanical deformation parameters in lab-scale tests of rock specimens is presented. Based on the data of implemented tests, the change in the structure and spectrum of EME signals at the prediscontinuity stage in rocks is determined, and the failure prediction criteria are proposed.