... a partial factor for the Geological Strength Index such that the limit states design of weak rock slopes using the reduced GHB parameters becomes equivalent to the design using the reduced MC parameters. A parametric study has been carried out using the Limit Equilibrium Analysis approach for weak rock...

... ABSTRACT: During the design process in rock engineering Hoek-Brown failure envelope is used for the determination of rock mass failure envelope mainly in brittle rocks. An important input parameter of the Hoek-Brown failure envelope is the Geological Strength Index (GSI ), which varies...

... Abstract Due to the large experience accumulated in the use of the RMR b (Rock Mass Rating), as well as to the simplicity of the estimation of the GSI (Geological Strength Index) and to the importance of GSI as input data in the Hoek & Brown failure criteria, both the RMR b and GSI...

... Abstract Recently, the Hoek-Brown failure criterion is one of the mostly used failure criterion for rock mass. The constants of this failure criterion depend on, among the others, the Geological Strength Index ( GSI ) and the disturbance factor ( D ). The purpose of this paper is to analyze...

... (surface weathering zone, 1st weathering zone of rock, bedrock); Figure 5. Structural-tectonic model of the deep karst. Figure 6. Quarry Kikova Greda. Figure 4. Quarry Ljubo ina. Figure 3. Structural-tectonic model of the transition zone. 141 geological strength index, GSI; seismic waves velocity (m/s...