Determining elastic properties of sedimentary strata in terms of limestone samples by laser ultrasonics

Geological engineering often uses geomechanical modeling aimed to enhance efficiency of mining or performance of structures. One of the input parameters for such models are the static elastic moduli of rocks. This article presents the studies into the physical and mechanical properties of rocks—limestone of non-metamorphic diagenesis. The precision measurements of Pand S-waves are carried out to an accuracy of 0.2% by laser ultrasonics. The static moduli of elasticity and the deformation characteristics of rocks are determined in the uniaxial compression tests by the standards of GOST 21153.2-84 and GOST 28985-91, respectively. The correlation dependence is found between the static and dynamic elasticity moduli in limestone samples. The found correlation allows drawing the conclusion that the static modulus of elasticity can be estimated in non-destructive tests, which largely simplifies preliminary diagnostics of samples in case of limited number of test core.

Keywords: core, limestone, laser ultrasonics, static elasticity modulus, dynamic elasticity modulus, correlation dependence.
For citation:

Shibaev I. A., Vinnikov V.A., Stepanov G. D. Determining elastic properties of sedimentary strata in terms of limestone samples by laser ultrasonics. MIAB. Mining Inf. Anal. Bull. 2020;(7):125-134. [In Russ]. DOI: 10.25018/0236-1493-2020-7-0-125-134.

Acknowledgements:

The study was supported by the Russian Foundation for Basic Research, Project No. 19-35-90063.

Issue number: 7
Year: 2020
Page number: 125-134
ISBN: 0236-1493
UDK: 622.023.25:539.32+620.179.16
DOI: 10.25018/0236-1493-2020-7-0-125-134
Article receipt date: 13.03.2020
Date of review receipt: 08.04.2020
Date of the editorial board′s decision on the article′s publishing: 20.06.2020
About authors:

I.A. Shibaev1, Graduate Student, e-mail: mrdfyz@mail.ru,
V.A. Vinnikov1, Dr. Sci. (Phys. Mathem.), Assistant Professor, Head of Chair, e-mail: evgeny.vinnikov@gmail.com,
G.D. Stepanov1, Student, e-mail: georgest0503@yandex.ru,
1 National University of Science and Technology «MISiS», 119049, Moscow, Russia.

 

For contacts:

V.A. Vinnikov, e-mail: evgeny.vinnikov@gmail.com.

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