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1-8 of 8
Keywords: constitutive law
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Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-326
... numerical model has either to use contact elements or apply a strain-softening constitutive law, allowing for the development of localised shear bands in the ground behind the shotcrete. In situ shear testing (Pilgerstorfer, 2011; Radoncic, 2011) has revealed that the thus developing shear band retains...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-089
... fracturing numerical method distinct lattice spring model fracture toughness test constitutive law Zhao micromechanical model Microstructure shear spring Upstream Oil & Gas displacement particle wave propagation propagation Harmonising Rock Engineering and the Environment Qian & Zhou...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-273
... decreas- ing strains, which not fit the experimental observations. The models are not able, thus, to reproduce the in situ tests, mainly because of simplifying assumptions. Particularly, they take into account neither an adapted constitutive law for the rock mass nor a correct phasing of the test, from...
Proceedings Papers
Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-050
... increases continuously. The design and the stability analysis for openings in salt rock necessitates a model for the realistic description of the stress-strain behaviour of rock salt. In the following, a constitute law is presented, which has been developed by Kiehl, Erichsen and Döring (1998...
Proceedings Papers
Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-229
... ABSTRACT A three dimensional constitutive law for swelling rock is presented. It can be applied to the osmotic swelling of mudstone as well as to the swelling of rocks containing anhydrite. It describes the development of time-dependent strains and stresses due to swelling considering elastic...
Proceedings Papers
Paper presented at the 6th ISRM Congress, August 30–September 3, 1987
Paper Number: ISRM-6CONGRESS-1987-082
... ABSTRACT: A nonlinear model for the calculation of the deformation and of the safety factor for jointed rock masses subjected to selfweight and external foces (hydraulic, nayling, prestressing, etc.) is presented. The constitutive laws for the joints allows for soil or weathered rock filling...
Proceedings Papers
Paper presented at the 5th ISRM Congress, April 10–15, 1983
Paper Number: ISRM-5CONGRESS-1983-220
... Africa University Banerjee fracture excavation formulation constitutive law .. EXTENDED BOUNDARY ELEMENT METHODS IN THE MODELLING OF BRITTLE ROCK BEHAVIOUR Extension des methodes d'elements limite pour modelisation du comportement de roches dures et fragiles Erweiterte "boundary element" Methode...
Proceedings Papers
Paper presented at the 2nd ISRM Congress, September 21–26, 1970
Paper Number: ISRM-2CONGRESS-1970-266
..., closure of mine excavation or creep of a rock mass are typical here. With the knowledge of the initial state, loading history and constitutive laws of the rock mass, methods are now available for a detailed study of deformation and stress development. Indeed such an analysis is often the only way...