Determining elastic properties of sedimentary strata in terms of limestone samples by laser ultrasonics
| Autor: | V. A. Vinnikov, I. A. Shibaev, G. D. Stepanov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Laser ultrasonics
Materials science Ecology Mineralogy Geology 02 engineering and technology 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology 01 natural sciences Industrial and Manufacturing Engineering 010309 optics Geochemistry and Petrology 0103 physical sciences Sedimentary rock 0210 nano-technology |
| Zdroj: | Mining informational and analytical bulletin. :125-134 |
| ISSN: | 0236-1493 |
| DOI: | 10.25018/0236-1493-2020-7-0-125-134 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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