TY - JOUR ID - 1429 TI - Efficiency of seismic wave velocity and electrical resistivity in estimation of limestone rock mass quality indices (Q, Qsrm) (Case study: Asmari formation, SW Iran) JO - Journal of Mining and Environment JA - JME LA - en SN - 2251-8592 AU - Fatemi Aghda, Seyed M. AU - Kianpour, M. AU - Talkhablou, M. AD - Department of Geology, Kharazmi University, Tehran, Iran Y1 - 2019 PY - 2019 VL - 10 IS - 2 SP - 529 EP - 541 KW - Sedimentary Rock Mass Quality Index KW - Asmari Limestone KW - Geophysical Method KW - Karstification KW - Empirical Equations KW - Fuzzy Inference System DO - 10.22044/jme.2019.7978.1673 N2 - In this research, the relationship between P-wave velocity (Vp) and Electrical Resistivity (ER) parameters with rock mass quality indices is investigated; parameters such as rock mass quality classification (Q) and modified system for sedimentary rocks, known as Qsrm. For making predictive models, about 1200 data-sets extracted from sections drilled in Seymareh and Karun 2 Dam Sites (SDS and KDS) in Asmari Formation, south-west Iran. Statistical and fuzzy methods used to study the relationships between physical characteristics and rock mass quality. Since in Qsrm classification, the existence of cavities, layering and rock texture is considered in addition to the parameters considered in the Q classification; therefore, it provides a better description of rock mass and is closely related with Vp and ER parameters. The obtained equations for predicting Q and Qsrm showed the determination coefficients (R2) 0.48 and 0.67, respectively, and the coefficient of determination 0.86 for Qsrm calculated from the fuzzy model. Finally, Mean Absolute Deviation (MAD), Variance Accounted For (VAF) and Root Mean Square Error (RMSE) used to check the prediction performance of statistical and fuzzy methods. The results of the calculated errors also showed that fuzzy models are interesting because they have good accuracy for predicting Qsrm. In addition, by increasing the degree of karstifiction, the efficiency of the geophysical method for estimate of Q decreases rapidly, this is due to ignoring the cavities in these categories. UR - https://jme.shahroodut.ac.ir/article_1429.html L1 - https://jme.shahroodut.ac.ir/article_1429_a0f52765890edee5f322b675dd6d342e.pdf ER -