... mass characterization, based on the above-mentioned GSI quantification, utilizing both LiDAR and photogrammetry point clouds from several rock slopes. The proposed semi-automated methodology leads to the extraction of space-resolved GSI values for the entire slope, by automatically assessing...

... stability: 1) Effect of error in estimating GSI on assessing stability of intersection, and 2) Effect of mining cut sequence in relation to the orientation of pre-mining maximum compressive stress. First, sensitivity of critical strain zones is analyzed due to an error in assessed GSI values used...

... application. Based on progressive failure of rocks, we found that cracks propagate under compression and as a result the Geological Strength Index (GSI) decreases with the increase of plastic strain. By defining the GSI value as a function of plastic strain, a strain-dependent GSI softening model based...

... Characterization Upstream Oil & Gas hoek-brown curve GSI value MPa Continuum boundary vein network direct shear test reservoir geomechanics vein intrablock structure strength normal stress envelope excavation triaxial test ARMA 13-377 Accounting for rockmass structure in underground and open...

... Vegas, Los Angeles, and Phoenix. access shaft tunnel face intake original starter tunnel canopy tube ground condition excavation alignment Lake Mead tunnel Reservoir Characterization starter tunnel shotcrete support class support system amphibolite GSI value probe hole...