Bi-modular properties of sandstone inferred from seismic moment tensors of acoustic emissions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F23%3A00578344" target="_blank" >RIV/67985831:_____/23:00578344 - isvavai.cz</a>

Alternative codes found

RIV/67985530:_____/23:00583408

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1365160923002502?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1365160923002502?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijrmms.2023.105576" target="_blank" >10.1016/j.ijrmms.2023.105576</a>

Result language

angličtina

Original language name

Bi-modular properties of sandstone inferred from seismic moment tensors of acoustic emissions

Original language description

We propose a novel method for studying the λ/μ ratio, the vP/vS ratio and Poisson's ratio of rocks based on the determination of highly accurate moment tensors of acoustic emissions (AEs). The validity of the method is verified on observations of 539 AEs recorded in a sandstone sample during a semi-circular bend test. We show that the sandstone exhibits the so-called bi-modular behaviour indicating that rock parameters significantly differ under compressive and tensile stress regimes. In addition, the zone characterized by highly tensile fractures is auxetic. For increasing shear component in AEs, Poisson's ratio increases and the auxetic effects disappear. The proposed approach for determining the λ/μ, vP/vS, and Poisson's ratios using AEs is fully independent of standard techniques based on measuring deformation of rock samples. The approach might find applications in detailed studies of rock behaviour under various stress conditions, in particular, in assessing the bi-modularity of rocks measured during a single experiment.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20701 - Environmental and geological engineering, geotechnics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Rock Mechanics and Mining Sciences

ISSN

1365-1609

e-ISSN

1873-4545

Volume of the periodical

171

Issue of the periodical within the volume

November

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

105576

UT code for WoS article

001199173600001

EID of the result in the Scopus database

2-s2.0-85171179623