Influence of rock specimen diameter size on the ultrasonic pulse velocity and dynamic elastic constants | ||
| Geopersia | ||
| دوره 11، شماره 2 - شماره پیاپی 22287825، بهمن 2021، صفحه 361-376 اصل مقاله (3.25 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/geope.2021.317191.648592 | ||
| نویسندگان | ||
| Amin Jamshidi* 1؛ Rasool Yazarloo2 | ||
| 1Department of Geology, Faculty of Basic Sciences, Lorestan University, Khorramabad, Islamic Republic of Iran | ||
| 2Department of civil engineering, Gonbad Kavoos Branch, Islamic Azad University, Gonbad Kavoos, Islamic Republic of Iran | ||
| چکیده | ||
| The ultrasonic pulse velocity including P-wave (Vp) and S-wave (Vs) velocity and elastic constants including the elastic modulus (E) and Poisson’s ratio (ν) are among most important parameters for estimating the strength and deformability properties of rocks. The specimen diameter size is one of the main factors that influence Vp, Vs, E and ν. This study presents the influence of specimen diameter size on the Vp, Vs, E and ν of sandstones. Moreover, we have investigated the accuracy of porosity (n) for estimating the Vp, Vs, E and ν at different diameters size. For this purpose, 10 sandstone samples were collected and core specimens with a diameters size of 24, 40, 54, 68, and 80 mm were prepared. Then, density (ρ), n, Vp, Vs, E and ν of sandstones were determined. It is concluded that the specimen diameter size has a significant influence Vp, Vs, E and ν. Moreover, the results showed that n is in good accuracy for estimating the Vp, Vs and E, while there are no meaningful correlations between ν with n. - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| کلیدواژهها | ||
| P-wave velocity؛ S-wave velocity؛ Elastic modulus؛ Poisson’ s ratio؛ Specimen diameter size | ||
| مراجع | ||
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