... was constructed for the rockmass at Brockville Tunnel, Ontario, Canada by extracting the DFN generation input parameters from Light Detection and Ranging (LiDAR) scanning data. 13th International Congress of Rock Mechanics ISRM13 10-13 May 2015, Montreal, Canada 2 STUDY OF THE GEOMETRICAL SCALE-DEPENDENCY...

.... The ground condition parameters should include parameters representing both intact rock properties and rock mass properties, and so, in this study UCS, RMR, CLI and CAI are considered to be the input parameters. UCS is intact rock parameter which measures the crushing nature and strength of rock and can...

.... The quality of wellbore-stability predictions in drilling operations strongly depends on the quality of input parameters. The Quality Control (QC) of input parameters described in this paper includes performing a comprehensive sensitivity study to identify the key parameters that dictate wellbore stability...

... SCB specimen particle specimen crack propagation hydraulic fracturing fracture toughness Fracture Toughness Testing clumped particle model strength input parameter experiment toughness metals & mining Simulation crack distribution Kimachi sandstone loading roller numerical...

... and Brazilian tests, to clarify the relationship between the micro-scopic parameters, which are the input parameters for PFC2D, and the mechanical properties of the rock. The relationships between each microscopic parameter and the mechanical properties of the rock are established. Using these relationships...

... developed to establish the relationship between input parameters and front leg pressure.Validation of model was carried out with the field monitored data and found that the combination of finite element analysis results and neural regression models can be used to forecast face stability conditions...

... are fractures. The input parameters required for the model are the fracture geometry, and the mechanical properties of fractures and intact rock. Overview of the methodology Definition of the fracture network A Discrete Fracture Network (DFN) model was chosen to simulate the fracture network...

..., reinforcement pattern design and construction result during pumped underground powerhouses excavation are presented. Especially, softwares for stability analysis, input parameters and result like displacements, stresses and rockbolt axial forces are compared, additionally. Geology and in-situ rock stress...

... system approach for determining overall risk assessment, a risk control recommendation and a basic GIS (Graphic Information System) approach for graphically overlying input parameters and the output risk. The expert system uses a Bayesian probabilistic approach to combine various workplace-related...

... of a slope. These uncertainties are related to input parameter estimation and the selection of the models that are being used. The first is due to the spatial variability of the parameters such as strength, groundwater and seismic acceleration. The second is due to the reliability of the hypothesis carried...

.... In this paper, continuous and discontinuous modelling is applied in order to focus on this decision making process. Gjøvik Olympic Mountain Hall is utilized as a case study, and more than 90 different combinations of varying input parameters are analyzed. The large span cavern was built in connection...

... work, a two-dimensional sliding crack model was assumed. The input parameters were determined by image processing technique on the images of the pre-existing cracks contained in a rock specimen. The results showed a good match between them. RÉSUMÉ: Les discontinuites contenues dans la roche...

... with respect to the input parameters of the intact rock and the fractured zones, whereas the simple elastic-plastic joint constitutive law seemed to give somewhat misleading results. Thus, a non-linear joint model should be used to understand the joint mass behaviour accurately enough. The results also showed...

... in the effective continuum. trial excavation constitutive equation trial cavern Upstream Oil & Gas cavern measurement result rock mass measurement data micromechanics-based continuum theory input parameter jointed rock mass cavern wall power station construction agreement displacement...

... SYNOPSIS: A three-dimensional displacement discontinuity method for stress analysis of practical mine layouts in a layered, anisotropic rock mass is described. The methods used to determine reliable estimates of input parameters are illustrated by results from a coal mine currently being...