ABSTRACT
This article presents the basics of Empirical-Static-Dynamic (ESD) methodology for extrapolation of parameters in Rock Mechanics. The prerequisite for its successful application is to have enough data for reliable rock mass classification; to have enough testing data for deformability with static tests in a large scale and all zone of interaction between the structure and the rock mass to be covered with geophysical seismic tests. Applied tests must be performed in a manner that will ensure reliable data to establish correlations between necessary parameters and that will enable their extrapolation for each quasi-homogenous zone of the rock massif of interest. The analyses are given based on the results from investigations on location for arch dam “Sveta Petka” and number of tunnels and bridges for large infrastructure projects in Republic of Macedonia. Several regressive models between rock mass quality, statical (D) and dynamical modulus of deformability (Edyn) with velocity of longitudinal seismic waves (Vl) are presented in the paper, in order to illustrate the necessary steps to be undertaken in the methodology.
