... characterization benchmarking diameter double shield tbm rmr correlation low fractured strategic planning and management penetration schistosity tbm characteristic 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG Performance of different diameter Double Shield...

... ABSTRACT: RMR and SMR are two of the most applied classifications for tunnels and slopes, respectively, excavated in rock masses. Five parameters are used to compute the basic RMR classification for each discontinuity set. However, it is not clarified the whole Rock Mass RMR value. Here...

... and numerical modelling have been used to ascertain the stability of the workings. CMRI-ISM RMR (Central Mining Research Institute – Indian School of Mines Rock Mass Rating System) classification system is the most popular and practiced empirical method for roof support design in Indian coal mines. Firstly...

... geotechnical parameters of rocky massif quality composing the classification systems, Q (Barton, 1974), RMR (Bieniawski, 1989), and GSI (Hoek et al. 2013) are essential for knowledge of geotechnical domains and better geotechnical modeling based on the variety of tools available in geostatistics. This study...

... with limited data. Kinematical analysis is a widely used method that requires orientational data and the rock mass friction angle. However, geological or mechanical features of the rock mass are disregarded. Slope Mass Rating (SMR) is an alternative that considers the basic Rock Mass Rating (RMR) parameters...

... Abstract Jointing degree is a fundamental parameter for geomechanical characterization of the rock mass. RQD parameter is a measure of drill core quality of the rock mass widely used on the main geomechanical classification systems, such as Q system (Barton et al. 1974) and RMR system...

... has formed cavities extending vertically and also laterally of significant size. The excavation methodology, which considered stand-up time and unsupported span using Bieniawski's RMR, is found most suitable in the given circumstances. Keeping in view field conditions are encountered and failure zone...

... rock quality designation classification estimation application reservoir geomechanics discontinuity frequency barton rmr discontinuity frequency gold mining metals & mining uniaxial compressive strength q-system rock mechanic equation 3 wellbore design reservoir...

... of discontinuity by a zone of weakness. In this way, the magnitude of the normal vector results from the product of the spacing and the RQD or the RMR. In going further in this theory, at least three conclusions show up. First, in the evaluation of rock masses, it is necessary to determine the orientation, spacing...

... reservoir geomechanics relation waste management Upstream Oil & Gas qu-rqd-jc space Artificial Intelligence strength discontinuity graph tunnel Reservoir Characterization cohesion information classification RMR excavation rate contour line rock mass classification joint...

... for rock mass classification based on seismic measurements. For the classification, the widely known RMR and RQD have been used so that a general idea about the rock mass behavior and not only single parameters can be gained from the results Based on the RMR, two rock mass classes were determined along...

... in the rhyolite. Few minor faults and shear zones were encountered in the tunnel excavation. Figure 1. Variograms of RMR of rocks at Lam Ta Khong site in vertical and horizontal directions. Figure 2. Predicted RMR profile of rock mass for Lam Ta Khong tunnels. 3 PREDICTED RESULTS 3.1 Lam Ta Khong Tunnels Core...

..., Rueil-Malmaison, France ABSTRACT: The rapid spread of the use of geomechanical rock mass classifications (Q system, RMR and later developments such as the GSI made by Hoek and others) is a worldwide and irreversible trend driven by its applications in the profession. In particular, rock mechanical...

... to the elements. Wellbore Design strength correlation reservoir geomechanics classification Discontinuity orientation Reservoir Characterization Upstream Oil & Gas RMR China wellbore integrity orientation discontinuity distribution coefficient discontinuity granite correlation...

... well logging risk assessment RMR Reservoir Characterization risk management classification log analysis risk and uncertainty assessment Rock mass Rating threshold transformation coefficient borehole Artificial Intelligence Upstream Oil & Gas formula cumulative probability...

... ABSTRACT Rock mass classifications RMR, Q and GSI do not suggest decreasing modulus ratio with the decrease in the quality of rock. These have been linked to joint factor, J f , for better prediction. An engineering classification is suggested based on strength and modulus applicable to both...

... Some topics, which difficult the effective use of RMR for dam foundations, are reviewed and a new geomechanics classification system, DMR (Dam Mass Rating), is proposed -as an adaptation of RMR- giving guidelines for several practical aspects in dam engineering and appraisal of dam foundation...

... The SMR geomechanics classification system (adaptation of RMR for slopes) is reviewed with data from 87 actual slopes in Valencia. In a research project, SMR has been applied by a GIS system, as a method to forecast stability problems in future road construction. On revient sur la...

... SRC rockmass classification have been applied to 25 tunnels in Spain and Italy, for which it was found that much heavier supports than those estimated by the RMR index were required. SRC and RMR indices and other relevant geomechanical data were obtained during the site investigation...

..., cohesion and unconfined compressive strength of the rock mass were estimated. A comparison of the results using different classification methods (Q, RMR, GSI, RMi, Ramamurthy's) was made to estimate the range of variations in the mechanical properties with the considerations of: the quality/quantity...