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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
... water density, e is void ratio and Us is density of solid particles. The contact problem formulation is based on solution-dependent domain geometry and boundary condition. The contact interface changes its form depending on the evaluated displacement: if the resulting displacements do not result into...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-190
... surface area is chosen in this model 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...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-077
... dynamic behavior 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...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-068
... impacts 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...
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-2015-137
... 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 with...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-053
... bit tip rigid body reservoir simulation constraint coal boundary condition numerical model ABSTRACT: The wear of the bits on a continuous mining machine is a problem that affects mine operators around the world. The fundamental problem (wear) still causes increase in the downtime of the...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-073
... device 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 direct shear device was configured to simulate conditions that occur in nature during civil engineering works, such as above and below ground...
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 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 and on the...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-234
... Boundary conditions The associated mechanical boundary conditions on are: u = 0 on u (imposed displacements) · n = t on t (imposed surface forces) · n1c = t1c on 1 (cohesive forces) · n2c = t2c on 2 (cohesive forces) In a similar way the associated boundary conditions for the...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-022
... Reservoir Characterization infill material rock joint reduction Upstream Oil & Gas Thickness infilled rock joint boundary condition rock mass displacement CNL infill thickness shear stress normal stress jointed rock Shrivastava stiffness shear behaviour shear strength cn...
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...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-061
... 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 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-139
... 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 the load distribution in both tests using...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-144
... 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 Abstract: The...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-050
... & Cundall 2004). In our simulation, each triangular par- ticle comprises few constant-strain elements (Fig. 1). Interface between these particles is viewed as contact, meaning that the discontinuity is treated as a boundary condition. The contact points are laid at two ends of each particle edge. The...

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