Interaction of the Acoustic Q–Factor and Strength in Limestone
A. S. VOZNESENSKY, YA. O. KUTKIN, M. N. KRASILOV
Moscow State Mining University, Leninskii pr. 6, Moscow, 119991 Russia
Keywords: rock, strength, acoustic Q–factor, attenuation, dynamic characteristics, damage
Abstract
Under analysis is the experimental testing of interaction between the limit of strength and the acoustic Q–factor in terms of Kasimov deposit limestone. The limit of strength is found using two procedures, namely, direct method and interpolation, which are compared. The authors illustrate the advantage of the acoustic Q–factor procedure in assessment of damage and residual strength of rocks as against the method of elastic wave velocities. The resultant relations can be used in assessment of residual strength and remaining life of pillars and roofs in underground excavations.
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