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Estimation of the quality of limestone rocks in some section of the Zagros mountains using seismic wave velocity

Document Type : Original Research Paper

Authors

1 Assistant Professor, Department of Applied Geology, Faculty of Erath Science, Kharazmi University, Tehran, Iran

2 Ph.D. Student, Department of Applied Geology, Faculty of Erath Science, Kharazmi University, Tehran, Iran

3 Professor, Department of Applied Geology, Faculty of Erath Science, Kharazmi University, Tehran, Iran

Abstract

In this study, the efficiency of the compressive wave velocity (Vp) geophysical method for predicting the quality of limestone mass in areas of Zagros formation, has been investigated. For qualitative classification of limestone rock masses, the Q classification system and its modified classification system for sedimentary rocks (Qsrm) have been used. For this purpose, the data related to Vp, Q and Qsrm were extracted at the site of Karun 2, Karun 4, Khersan 3 and Tangeh Manshoureh dam sites and by using software interpolation methods in ArcGIS has been transformed into information layers. Using simple and multivariable regression analysis on data extracted from information layers and using Fuzzy Inference System (FIS), models for predicting Q and Qsrm in calcareous rock masses are presented. Also, to evaluate the accuracy of the obtained models, in addition to R2, performance indicators (VAF) and root mean square error (RMSE) were used. The results show that since the Qsrm index considers a wider range of massive properties, the prediction of the Qsrm value is closer to reality using geophysical methods than the Q index.

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References
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Scientific Quarterly Journal of Geosciences
Volume 29, Issue 116 - Serial Number 116
Volume 29, Serial Number 116, Summer 2020
August 2020
Pages 61-70
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