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Keywords: boundary condition
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Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-054
... undrained hydraulic boundary conditions for the Heater Test. The PRACLAY gallery was constructed in 2007 and the hydraulic seal was installed in 2010. The bentonite is hydrated by natural and artificial process. The swelling, total pressure and pore pressure of the bentonite are continuously measured and...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-198
... ring loaded by arbitrary opposed strip forces, applied either to its inner or outer surfaces. To pursue the objectives, boundary conditions are initially introduced by means of Fourier series, and Michell s stress function is employed to derive the stress tensor. 13th International Congress of Rock...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-218
... center. The applied load disappears at the edge of loading plates. In this study, in order to satisfy this boundary condition on the loading plate, the cosine curve is adopted as the distribution of load applied on the loading plates in a theoretical model of the diametrical compression test. Furthermore...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-083
... ABSTRACT Computational mechanics with its various numerical methods is being used to analyze different problems with various kinds of boundary conditions. Basically, the main advantage of meshless methods is to eliminate model meshing stage and to distribute nodal points throughout the model...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-038
... failure zone boundary condition Nazarova Upstream Oil & Gas deep oil well stability problem incipient seismic event rock mass stiffness Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 Initiation and evolution...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-030
..., but only under a certain boundary condition. The fracture rings are neither closed rings nor continuous one both in the radial and axial direction. The propagation of ZD is in a spiral way around openings. Most of the fracture zones occur in the area of brittle rock mass with high strength and high...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-225
... to investigate in real condition. In the future, such models will be able to simulate full scale problems. Hybrid static-dynamic boundary conditions are established, methods for static and dynamic loading of models are defined and the conditions for good quality wave transmission through unjointed...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-144
... of the influencing parameters in the laboratory. However, very few researchers have considered the influence of boundary conditions. The shear behavior of the rock joints can be investigated under two different bound- ary conditions i.e. constant normal load (CNL) i.e. K = 0 and constant normal...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-104
... ABSTRACT The mechanical behaviors of rock under different boundary conditions have been studied based on the fractal characteristics of fractures in terms of macroscopic investigations. Three cuboid granite specimens in similar dimensions were tested by the triaxial rock testing machine under...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-090
... displacement boundary condition metals & mining tectonic stress field ground movement geo-stress field lateral boundary principal stress Upstream Oil & Gas Rock mechanics boundary condition stress field reservoir geomechanics displacement numerical simulation rock mass movement...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-179
... & Gas reservoir geomechanics numerical method Engineering boundary condition local stress situ stress situ stress estimation algorithm hybrid numerical method equation algorithm stress measurement Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-232
... the behaviour of the mesh and restraints have the potential to be used to simulate a wide range of loading configurations and boundary conditions. A recent testing program has been undertaken at the new WASM static test facility. Two different modelling techniques have been used to attempt to simulate...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-253
... ABSTRACT A method of "retrieval" of boundary conditions by the data on fields of displacements or stains at internal points of a calculated domain has been developed on the basis of a discrete Green function. The proposed approach has been conducive to estimating the stress field variation in...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-260
... & mining resistance steel roadway support Proc strain energy computer rockburst underground rockburst loading capacity strengthening construction czech mining authority Ostrava dynamic effect boundary condition longwall gate support 11th Congress of the International Society for Rock...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-022
... Intelligence displacement tunnel land deformation displacement boundary condition rock mass reservoir geomechanics orientation hydromechanical numerical model boundary condition spatial distribution jointed rock mass Groundwater Flow geologic media media 11th Congress of the International...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-082
... test of reference were used as numerical model size and assigned properties to numerical model. Reservoir Characterization Upstream Oil & Gas Simulation specimen hydraulic fracturing analysis method numerical analysis test result Wellbore Design continuum method boundary condition...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-094
... ABSTRACT The shear characteristics of rock mass are subjected to not only to the shear force but also to the boundary conditions given by neighboring rock mass. The boundary conditions of the rock mass can be classified into four categories according to the stress state of the rock joint. The...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-173
... ABSTRACT This paper presents an analytical closed-form elasto-plastic solution for displacement around a circular tunnel. The solution is based on strain-related parameters such as initial strain, strain boundary conditions and a strength criterion in termas strains. Engineering approaches...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-022
... ABSTRACT Stiffness controlled test procedures performed with servo-controlled shear systems are the most versatile for simulating the wide range of boundary conditions expected in nature. Examples of a function controlled procedure in addition to dilatation controlled procedures are discussed...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-226
... dry density technology roadmap model test boundary condition Wittke montigel compacted bentonite bentonite fortement compacté saturation watering equation 1315 Wittke, W., Gattermann, J., Modelling water uptake in highly compacted bentonite in environmental sealing barriers ISRM 2003...

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