Computer simulation of elastic waves propagation from explosion source in case of underground mining in a gypsum rock massif for different parameter βdK of Rayleigh model characterizing attenuation, proportional to frequency is carried out. The diagram of dependence of acoustic quality factor versus βdK shows that in case of increase in attenuation acoustic quality factor of a rock massif decreases. βdK change on 2 orders corresponds to change the quality factor of Gypsum rock for 30%. Thus the specified dependence can be used only for qualitative estimate of acoustic quality factor changes of rock massif in time. The quantitative assessment can be made only after necessary adjustments.
91.60.Lj Acoustic properties
$^1$National University of Science and Technology MISiS, College of Mining
Science News of the Faculty of Physics, Lomonosov Moscow State University
This new information publication, which is intended to convey to the staff, students and graduate students, faculty colleagues and partners of the main achievements of scientists and scientific information on the events in the life of university physicists.