... graz university mesh photogrammetry workflow acquisition 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG Holographic mixed reality: an enhanced technology for visualizing and evaluating complex 3D geologic data Markus Kaspar Institute of Applied...

... criteria sprayed concrete metals & mining geological subdiscipline drilling installation geotechnical engineering autonomous truck machine learning operator classification rebar autonomous machinery drillability assessment mesh 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium...

... system, be it dynamic or static, can be reached by high tensile steel meshes, that allow a wider bolt spacing. The proposed extension of the Q System considers the severe conditions the mining industry faces to get the ore from increasingly deep stops. INTRODUCTION Support in the underground works...

... system (rock bolts) as well as their interaction. Moreover, rocks often exhibit nonlinear brittle behaviour with softening response which may lead to very restrictive time-step constraints and, more seriously, significant mesh dependency and unreliable numerical results when strain localization occurs...

... which is considered a function of mesh density, mesh orientation, anisotropy orientation, and lateral constraint. The implication is an overestimate of the predicted stability margin by 5 – 10% or higher when key variables are compounded. Key observations are summarized with the intent to provide...

.... intersection figure prediction smartphone category mesh figure 8 strength reservoir characterization inspection construction application table probability angular diversion predicting proceedings figure 7 proportion miyajima Rock Mechanics for Natural Resources and Infrastructure...

... simulation has shown that the loose ring is 2.0m∼3.0m of roadway surrounding rock in top and floor, and 1.0m∼2.0m for right and left. (2) the first stage of the shell type hollow bolt and TECCO high-tensile wire mesh is flexible supporting, and the second stage of the grouting reinforcement is rigid...

... tunnel misalignment concentration excavation underground space technology figure 6 journal misalignment mesh rock mechanic lac du bonnet granite chandler Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367...

... fluid dynamics simulation thickness manzoli hydraulic fracturing fracture flow in porous media nel permeability elemento finito projection upstream oil & gas computational simulation displacement reproduce tensor mesh node maciel fractured media continuous strong...

... characterization correspond closure node fracture permeability variation fracture plane mesh calculation society module fracture closure orientation petroleum engineer equation 23 Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020...

... reservoir characterization glover development rotation interaction switzerland rock-net interaction norrish rock engineer attenuator sensor figure experiment duffy upstream oil & gas rockfall mesh rockfall attenuator deceleration rockfall protection rockfall trajectory...

... Abstract In this work, a plain steel wire double-twisted hexagonal mesh is modeled with the discrete element method for the evaluation of its mechanical behavior. In the current model, the wires are replaced with long-range interaction forces between nodes of the mesh. The implemented force...

... rockmass installation safety instrumentation mesh strength gobbi hoek rock mechanic geometry congresso brasileiro br 116 cnica cobrameg concentration upstream oil & gas formation rastro formation figure 7 shear strength Abstract Since the road BR 116 was build...

... in the sinking condition is ensured through a combination of artificial ground freezing and primary ground support. The focus of this paper is the area of the shaft at a depth of 700 m to 900m composed of limestone, mudstone, and halite which had a primary support of rock bolts and mesh in a shaft diameter of ~8...

... to the bedding planes experienced increased levels of deformation as the mining depth increased (Potvin & Hadjigeorgiou, 2008). data mining excavation chapula curtin university geomechanics metals & mining bedding plane hadjigeorgiou mesh structural geology reinforcement western...

..., Oliver et al. (2008) have demonstrated advantages of EFEM over XFEM for including: (a) ease of modeling in any standard finite element code due to the possibility of static condensation, (b) higher accuracy in some cases for coarse meshes, and, (c) a reduced computational cost. However, there has been...

... hydraulic fracturing 13th international congress mesh sassi Reservoir Characterization quasi-brittle material international journal Sousa fracture characterization effective configuration tensile Montreal Upstream Oil & Gas compression tensor plasticity-damage model...

... by an unstructured mesh. Bedding planes are represented by systematically varying the elastic modulus of the rock and by defining horizontal weakness planes. Fractures and matrix are represented using parametric surfaces, and tips are defined by their boundary curves. Tip advance is controlled by a failure criterion...

.... A new dual-node, dual-mesh technique based on first principles uses a multi-scale technique that allows for computing whole mine surface subsidence while also allowing for computational details of stress, strain and displacement about main entries and pillars, panel entries, and bleeder entries...

... PDC cutter with rock and hence to evaluate the MSE. In our modelling of the rock cutting process two type of analysis were carried out: 1) 2-D analysis of linear cutting and 2) 3-D analysis with curved cutting trajectory. 2.1 Geometry and finite element meshing 2.1.1 2D models Two 2D models were...