We must here also mention the negative side of our investigations.The acoustic activity measurements were made with a ZIR-I instrument, with a wide frequency band, which required the absence of industrial noise and the presence of observers at the measurement point.Moreover, the characteristic volume of sampling (i.e., the volume of rock within which the pulses arose) remains unknown.Nevertheless, the results show the promise of this method for creating systems for geomechanical monitoring of rocks and workings.i.
LITERATURE CITEDF. I. Boreiko and V. K. Piskarev, "Method of assessing the stress in the solid rock," Inventor's Certificate
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