Tünellerde Sıkışmayı Kontrol Eden Bazı Parametrelerin Üç Boyutlu Sayısal Modelleme ile Araştırılması

Abstract

In this study the efficient parameters of Hoek-Brown criteria are taken into account for analyzing squeezing grounds. Analyses for defining these parameters are based on three dimensional numerical modelling. Flac3D software has been used in modelling. For these studies, essentially four input parameters of Hoek-Brown are taken into account: GSI (Geological Strength Index), UCS (Uniaxial Compressive Strength), mi (Hoek material constant) and H (overburden). Since Flac3D is based on Mohr-Coulomb criteria, a code (FISH CODE) that matches Hoek-Brown criteria was written. These parameters were used as variables on the model. The most efficient parameters for squeezing probabilty, are defined by evaluating the produced graphs. In conclusion; it was observed that for the evaluation of squeezing grounds GSI, UCS and H are the most effective parameters of Hoek-Brown.