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Prediction of mechanical and physical properties of some sedimentary rocks from ultrasonic velocities

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dc.creator SABBAĞ, Nevbahar
dc.creator Uyanik, N. Ayten
dc.creator Oncu, Ziya
dc.creator UYANIK, Osman
dc.date 2019-11-30T21:00:00Z
dc.date.accessioned 2020-10-06T10:49:06Z
dc.date.available 2020-10-06T10:49:06Z
dc.identifier 93dc9c1d-d74e-45d7-9038-f1e03a7f1acb
dc.identifier 10.1007/s10064-019-01501-6
dc.identifier https://avesis.sdu.edu.tr/publication/details/93dc9c1d-d74e-45d7-9038-f1e03a7f1acb/oai
dc.identifier.uri http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/66659
dc.description In this study, density, porosity, void ratio, and ultrasonic P- and S-wave first arrival times were measured on limestone, sandstone, and siltstone samples obtained by using mechanical soundings in the city of Zonguldak. Turkey. Fracture and fissure indexes of rocks were calculated from ultrasonic P- (Vp) and S-wave (Vs) velocities. Multi-parameter relationships occurred between ultrasonic velocities with seismic fracture and fissure indexes and physical and mechanical properties of the rocks. Root mean squared error (RMSE = 0.5-0.8%) values correlated between measured densities and densities calculated from Vp and Vs. The correlation coefficients of experimental relations between densities, void ratio, and porosity with seismic velocities that were obtained ranged from 78, 86, 67, and 84%, respectively. Consequently, natural, water-saturated and grain densities, porosity, and void ratio values were determined from new multi-parameter relationships obtained from the combined use of Vp and Vs. In addition, the results of this study suggest that the rock quality may wrongly be determined using the only Vp, whereas it can be obtained more accurately by using Vp and Vs together. The reason for this is that the P wave spreads in solid, liquid, and gas media, while the S-wave spreads only in solid media. Therefore, S-waves will not be altered by fracture filling (gas or liquid), while P-waves are affected by fracture filling. In the present study, the use of Vp and Vs together in relationships was more useful in determining the strength and hydraulic properties of rock mass that the use of either Vp or Vs alone. Also, Rock Quality Designation (RQD) and Rock Mass Rating (RMR) values can be correctly calculated from the combined use of Vp and Vs. As a result, interpretation of crack fill and classification of the rocks can be quickly performed using seismic velocities.
dc.language eng
dc.rights info:eu-repo/semantics/closedAccess
dc.title Prediction of mechanical and physical properties of some sedimentary rocks from ultrasonic velocities
dc.type info:eu-repo/semantics/article


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