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Keywords: boundary condition
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Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-047
... Reservoir Characterization Wellbore Design variation wellbore integrity Upstream Oil & Gas tensor reservoir simulation micromechanical approach boundary condition construction materials gabssi composite material porosity effective bulk modulus estimation procedia engineering...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-068
... geomechanics expansion coefficient hydration Reservoir Characterization displacement boundary condition bentonite hydration saturation Artificial Intelligence discrete fracture geometry Upstream Oil & Gas borehole procedia engineering 191 bentonite interface han�ilová diffusion equation...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-190
... for calculation. The parameters are listed as fol- low: the elastic modulus of rock E = 35 GPa, Poisson s ratio µ= 0.3. The boundary condition of the model is shown in Figure 3. The fracture s two curve sur- faces completely fit with each other and contact type is chosen as tangential contact. Then slipping...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-077
... of drillstring. Firstly, several sources of excitation in vibration are analyzed in order to figure out their influences on the vibration. Then, boundary conditions and initial conditions are presented. Afterwards, the dynamic behavior of drillstring is considered as composed of axial-torsional vibration...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-068
... on coal burst occurrence using numerically efficient nonlinear Finite Element Models. A variety of loading conditions, boundary conditions, and interface properties were evaluated to determine their effects on failure of single and group of pillars. The ultimate aim here is to undertake a significant...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-064
...). Deviations from the standard test methodology with hard and stiff materials arise mainly from the violation of the accepted boundary conditions in the Brazilian test, e.g. three-dimensional stresses are developed in the contact regions (Serati 2014). In the case of the PLST, the available relationships...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-105
... arise as questions. Reservoir Characterization structural geology sepulveda Upstream Oil & Gas frequency Chile Santiago stability Earthquake dynamic numerical analysis central chile mechanical property rock slide Universidad boundary condition geometry landslide deposit...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-117
... Reservoir Characterization displacement prediction working hypothesis rock engineering limit state analogue application hypothesis Artificial Intelligence information beam analogue limit state design metals & mining material property boundary condition excavation stiffness...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-193
...-dimensional numerical model of a circular excavation reinforced by rock bolts that are fastened by cement grout along their full length. Artificial Intelligence steel bar Prague node boundary condition stiffness matrix czech technical university Reservoir Characterization rock massif...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-137
... conduction and advection) and depends on several boundary conditions (e.g. surface temperature, basal heat flow) as well as on numerous parameters (e.g. 3-D topography, distribution of geological units/of thermal conductivity, water circulation pattern/distribution of hydraulic conductivity), along...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-053
..., the constituent elements do not deform but can undergo large rigid body motions. The motion of a rigid body can be prescribed by applying boundary conditions at the rigid body reference node. Loads on a rigid body are generated from concentrated loads applied to nodes and from the distributed loads applied...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-073
... simulates conditions occurring in nature and under which the shear force of rock joints can be determined are CNL and CNS. 1.1 Boundary conditions The behavior of rock joints in reaction to shear stress not only depends on its mechanical and geometrical properties, but also on the boundary conditions acting...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-193
... Abstract The Artificial Ground Freezing method (AGF) has been widely used for both civil engineering and mining applications for ground stabilization and water control. In AGF models, the thermal boundary conditions at the freeze pipe wall strongly depend on the cooling conditions...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-234
... is the fluid density. The expression of the fluid density variation for the fracture is defined by: The fluid flowW inside the fracture governs the normal fracture aperture [u]·nc, which is related to the fluid flow via the cubic law (Whitherspoon et al., 1980): 2.4 Boundary conditions The associated...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-022
...°–30° under constant normal load (CNL) and constant normal stiffness (CNS) boundary conditions at different initial normal stress ranging from 0.10 MPa to 2.04 MPa. The thickness of infill (t), varied from 0, 5, 7 and 10mm over an asperity height (a) of 5mm, which makes the t/a ratio as 0, 1, 1.4 and 2...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-139
... of Queensland, School of Civil Engineering, Australia ABSTRACT: In this paper, an analytical solution is developed of the stress and displacement components in a three-dimensional solid disc subjected to Brazilian and point load test boundary conditions. The methodology is initially based on introducing...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-081
.... The structure comprises of a major thrust plane striking NE-SW with granitic rocks riding over limestone. Reservoir Characterization temperature distribution reservoir geomechanics variation displacement boundary condition Upstream Oil & Gas Thickness Disposal bench mark test 2 canister...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-061
.... The suggested procedures are applied and tested on analysis of the behaviour of coal-polyurethane geocomposite arising from coal seam grouting for improving resistance to dynamic events. scaling method material property laboratory testing CT image boundary condition identification reservoir...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-144
... surroundings. normalized displacement boundary condition plastic zone means plastic radius tunnel section rock mass deformation displacement tunnel face excavation normalized plastic radius numerical model Tunnel Stability eurock 2012 Convergence Confinement Method Extending...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-173
... (Fig. 1). Study the possibility of metastable states under conditions typical for such objects. In the plane statement the problem reduces to solving a system of the equations: Figure 1. Model domain and boundary conditions. ( ij are stresses; ui are displacements; , µ are Lamé parameters; i, j, k = x...

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