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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-044
.... upstream oil & gas maximum stress boundary ore body reservoir characterization modeling mining method eurock 2020 rock mass stress state metals & mining zhdanovskoe deposit stress state numerical geomechanical model reservoir geomechanics geomechanical model underground mining...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-040
... ). Discontinuity related computations DEM, DDA and FEM can directly use this mathematically proven algorithm. convex entrance block entrance block dimensional block boundary polygon contact vector convex solid angle vector round corner convex solid angle eurock 2020 convex block entrance surface...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-042
... underground mining reaches the rock mass under the open-pit. This conclusion suggests that the protecting pillars' boundaries can be revised for the purpose of the further decrease. This will increase volume of reserves mined and efficiency of underground mining. 1. Introduction The Niorkpahk and Oleniy...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-045
... be successful. social responsibility isotherm boundary renewable energy borehole oosterbaan granite underground thermal energy storage sustainability Helsinki conductivity storage sustainable development thermal conductivity University water store Simulation thermal property...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-064
... ABSTRACT: This paper attempts to provide a theoretical framework for the determination of the stress state induced in a hollow cylinder (ring) under Hertzian compressions on its outer boundary. The solution is obtained using Airy stress functions, Michell-Fourier series expansions and Fourier...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-118
... investigation Plaster hydraulic fracturing simulation result hole diameter BPM numerical model ahsc Simulation diameter boundary cavity fracture axial stress initiation shear crack granite compression ABSTRACT: In this paper, a numerical investigation is performed for the size and stress...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-108
... the code to its boundaries, making thus an ideal application to test and benchmark the implementation. knowledge management steady state Upstream Oil & Gas flow in porous media Engineering gallery Netherlands canister radioactive waste storage application fully-coupled thermo...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-099
... dome at periods of rest is about isostatic (Bräuer et al. 2011), due to viscoelastic relaxation of the deviatoric stress. Upstream Oil & Gas structural geology transition zone relaxation salt dome temperature anomaly field stress boundary perturbation Pore Pressure Perturbation...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-120
... finite difference time domain (FDTD) calculation. In a subsequent thermo-mechanical finite element (FE) simulation the stresses generated by 15 s heating with 25 kW are obtained. High stresses on the boundaries of the microwave absorbing phase exceeding the tensile strength are observed. Finally, the...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-105
... indurated claystone proceedings excavation EDZ Switzerland reduction microtunnel Lisjak boundary opalinus clay deformation hybrid finite-discrete element method finite-discrete element method ABSTRACT: This study aims at strengthening the understanding of the mechanical sealing process of...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-141
... Characterization strength axial force cable bolt performance numerical model structural geology equilibrium boundary excavation UDEC Upstream Oil & Gas model 2 block size rock mass Strain Capacity utilisation deformation reservoir geomechanics model 1 borehole jointed rock mass support...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-122
... emission creep constitutive model Abel dashpot fractional derivative approach Rock mechanics ae-based fractional derivative model ae-based fractional derivative approach bedded salt rock unsteady creep dashpot constitutive model boundary salt rock Zhou ABSTRACT: Energy storage and CO2...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-142
...-term performance. Upstream Oil & Gas diversion tunnel concrete lining kPa tunnel new lining right bank structural interface peak residual peak Reservoir Characterization tailrace tunnel characteristic cofferdam rogun dam stress analysis boundary new concrete lining left...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-146
... theory. The rock-concrete contacts, including the poling board and interfaces between rock mass and concrete lining, was represented by elastic boundaries with normal and shear stiffness. It was found that the stiffness of weak contacts has the great effect on the natural frequency of the lining...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-164
... Abstract Based on the plane elastic complex function method, theoretical analysis on the stress field around a circular tunnel with ring lining subjected to in situ stresses and inner hydrostatic pressure is carried out. The results of two extreme boundary conditions cases, pure slip and pure...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-129
..., respectively. The interaction between fluid and particles was evaluated using immersed boundary (IB) method. In the simulations, to investigate the effect of surface roughness of single rock fracture which commonly characterized by JRC (Joint Roughness Coefficient) on the injection mechanism and the amount of...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-166
... residual zones, respectively. The critical support pressures for the plastic softening and residual zones are investigated. The displacements at the opening boundary, radii of plastic softening and residual zones with different critical values of plastic shear strain (i.e. critical plastic parameters) and...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-237
... reservoir geomechanics hydraulic fracturing injection pressure discontinuity elastic deformation fracture trajectory stress condition boundary enhanced fdem code jointed rock mass pressure value fracture deformation rock mass triangular element Rock Engineering and Rock Mechanics...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-079
... boundary parts of the openings at great depths of excavation and wall drilling. In some cases the failure has a zonal character where tensile macrocrack zones alternate with a relatively monolithic rock mass (Shemyakin 1986, Adams& Jager 1980). Many attempts have been made to describe the zonal...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-055
... boundary groundmass crack initiation initiation unconfined compressive strength test nicksiar phenocrystal composition mineralogical composition mineral amphibole Artificial Intelligence strength Institute specimen biotite geomechanical property Rock Mechanics for Resources, Energy and...

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