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Keywords: volumetric strain
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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-2015-232
... be no additional volumetric strain changes. Dilation angle, represented by , is the parameter used for describing how dilatant a material is. Generally, a more dilatant material will show a greater volume increase than a less dilatant one. The dilation angle is derived from the ratio of plastic volume change...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-003
... be expected. metals & mining volumetric strain sidewall relation back analysis prediction roux Mean stress hangingwall reduction rock mechanics isrm13 Montreal data mining 13th international congress dilution open stope percentage dilution overbreak case study MEASUREMENT...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-018
... coalbed methane Fluid Dynamics volumetric strain flow in porous media Upstream Oil & Gas Reservoir Characterization coal seam gas free energy coal bed methane pore pressure complex reservoir surface stress permeability change permeability adsorption surface area porosity...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-050
... is that in order to capture large dilation using grain-based UDEC models, intragranular grain failure should be considered. wellbore integrity fracture characterization micromechanical parameter Modeling & Simulation Upstream Oil & Gas volumetric strain Reservoir Characterization Wellbore...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-127
... compression test results of sandstone samples Samples number Confining pressure (MPa) Peak strength (MPa) Residual strength (MPa) Elastic modulus (GPa) Deformation modulus (GPa) Peak strain (10-3) Axis strain Radial strain Volumetric strain U-1 0 70.14 / 11.80 7.11 8.26 -11.81 -15.36 U-2 0 69.19 / 11.84 8.22...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-108
... APPROACH TO CHARACTERIZING ROCK MECHANICAL BEHAVIOR A GLOBAL DAMAGE CONSTITUTIVE EQUATION BASED ON A ROCK SKELETON-PORE MODEL K-S. Wu, K-S. Wu, P. Zhao, Y-N. Wang, C. Cai, F-L. Liao where is the skeleton's principal strain, and is the skeleton s volumetric strain. Suppose that the apparent volume...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-020
... ABSTRACT This paper presents evidences form laboratory triaxial tests supporting the linear correlation between the volumetric strain e v and the major principal strain e1 at the maximum contraction of rock samples during loading processes. This linear correlation has been proposed...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-114
... behavior that is specific to the stress range above the threshold of absolute dilatancy. The model uses two material parameters: Poisson's ratio and the dilatancy angle. The values of these parameters were determined based on both the relationship between volumetric strain and axial strain...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-173
... problem". reservoir geomechanics volumetric strain Displacement Measurement circular tunnel observational method relation initial strain tunnel excavation tunnel Reservoir Characterization displacement boundary condition tunnel behaviour incremental strain Upstream Oil & Gas...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-273
... Drillstem Testing flow in porous media compressibility Fluid Dynamics Reservoir Characterization Upstream Oil & Gas Reservoir Compaction Loading Rate variation reservoir geomechanics drillstem/well testing volumetric strain rock parameter porosity Reservoir Engineering...
Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-028
... volumetric strain prediction structural geology elastic visco-plastic behavior elastic deformation Wellbore Design strength shear strain sandstone plastic deformation Deformation Characteristic weak rock material parameter hydrostatic stress MPa constitutive model dilation shear stress...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-204
... strength structural geology volumetric strain long term laboratory strength test loading platen confinement loading threshold reversal Rock mechanics damage threshold granite reservoir geomechanics solid waste management Bonnet granite international journal MPa sample end propagation...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-115
... volumetric strain corresponded to the peak differential stress at low intermediate principal stress conditions, at high intermediate stresses the rock material was damaged to much lesser extent. As a result, faulting of rock samples in the post-peak region was much more violent and was accompanied...
Proceedings Papers

Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-120
... Reservoir Characterization strength moisture content specimen MPa Wellbore Design nawrocki shale mineralogy wellbore integrity volumetric strain borehole equation Queenston compression test principal stress Queenston shale Upstream Oil & Gas variation Dusseault mechanical...
Proceedings Papers

Paper presented at the 8th ISRM Congress, September 25–29, 1995
Paper Number: ISRM-8CONGRESS-1995-158
... and differential stress in the transient pulse test and Fig.3 shows the corresponding lateral and volumetric strains. As a sample was initially stressed, the permeability slightly decreased because of closure of pre-existing micro-cracks or pores in specimen. This phenomenon was closely related to the decrease...
Proceedings Papers

Paper presented at the 7th ISRM Congress, September 16–20, 1991
Paper Number: ISRM-7CONGRESS-1991-083
... Fluid Dynamics contrainte isotrope experiment Shirahama sandstone orientation microcrack porosity differential stress permeability Upstream Oil & Gas volumetric strain Inada granite MPa pecimen flow in porous media pore pre PRE Deformational Characteristic granite...
Proceedings Papers

Paper presented at the 4th ISRM Congress, September 2–8, 1979
Paper Number: ISRM-4CONGRESS-1979-151
... voYumetr1c strain E. by subtracting the value of an elastic extrapolation of initial part of the volumetric strain from measured one. eeG QOio 00000 o 0 c/c.lo 0 g e·. o 0 0 00 o~ AlA u- 1.5uO.5~ b IC K .x 105 1.0 x w x£j x 0.5 x0 xx x x x 0 x x 4 z N 0 0.5 9 1.0 0 3 Applied stress...

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