Methodology of estimation of rock material input parametars for tunnels on a highway e-80 Niš – Merdare in Serbia

Predicting the behavior of rock mass during tunnel construction is a complex engineering problem, and it is important to conduct research to the extent that it is sufficient to define the characteristics of the terrain composition, before, during and after the construction of facilities. Engineering research works in the field and in laboratories differ in scope and type. In this paper, the established interdependencies of some of the basic parameters obtained during the testing of rock mass are presented:Edyn=f(Vp), Edyn=f(RMR) i Edyn=f(Q). Also, the relations between the engineering systems of rock mass classification and seismic primary waves are derived. RMR=f(Vp), Q=f(Vp). The relations were based on the examination of the rock mass for the construction needs of the tunnel on the Nis-Merdare highway. The results obtained in this study can be applied in environments that have similar lithological and structural characteristics.