Influence of the mechanical loading of rock salt on the parameters of thermoacoustic emission

This paper presents the results of experimental studies of acoustic emission occurring in rock-salt samples due to their local and volumetric heating under static mechanical loading preceding heating or occurring simultaneously with it. Thermoacoustic emission (TAE) parameters in rock salt depending on its structural heterogeneity were determined. Patterns of change in the TAE activity in test samples of the geomaterial under volumetric heating and subsequent cooling for different values of mechanical preloading were established. The established patterns can be used to predict the fracture of solid rock salt from results of measurement of s TAE in an extracted core.