1-17 of 17
Keywords: variation
Close
Sort by
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-055
... dependence of permeability on pore pressure is captured by taking into account Knudsen and slip flow contributions. Because depletion-induced variation of pore pressure leads to variation of eigen-strain, the resultant strain and stress exerted at the reservoir by surrounding country rock is found by using...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-053
...), the elastic strain tensor eij has the following form: where ij is the Kronecker delta tensor. Equation (7) shows that the increment of elastic strain tensor d eij is Figure 1. Variations of plastic flow angle 1 and viscoplastic flow angle 2 . where 1 = 3/4b1I 1/21 + 2b2I 31 J2, 2 = b2I 21 , and 3 = b2I...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-012
... criterion, which neglects the role of σ 2 , predicting only the lower limit of rock strength for a given σ 3 . strength crystalline rock characteristic Upstream Oil & Gas variation specimen compressive strength Coconino sandstone principal stress Reservoir Characterization Triaxial...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-018
..., and the results were compared with those in the groundwater before test. The mineral morphologies of fracture surfaces before and after test were also examined through SEM scanning. Test results show that there are no obvious variations of SiO 2 and Al 3+ in the outlet solution during the process of seepage...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-075
... variation on boundaries are introduced to demonstrate the proposed method. Lining displacements in each example are decomposed as linear combination of characteristic modes. Diagrammatic illustrations indicate these deformation patterns posing different physical meaning including translation, rotation...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-085
... to analyze the permeability variation of the given fractured rock masses considering different geometric parameters of the rock fractures. These numerical simulations showed that the principal permeability increased with the increase of the fracture length and fracture density, and for the trend of the two...
Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-088
... model Upstream Oil & Gas variation joint plane strength Reservoir Characterization plane parallel failure zone anisotropic deformation rock mass anisotropy rockbolt Huang excavation deformation jointed rock mass tunnel tunnel wall Rock Characterisation, Modelling and Engineering...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-019
...), where = friction angle along the plane of weakness. 3 ANISOTROPY 3.1 Inherent Anisotropy In this type of anisotropy, the weak surfaces are related to the rock formation processes, such as the foliation and ABSTRACT Discontinuities are responsible for mechanical anisotropy causing directional variation...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-079
... variation Deformational Characteristic shear stress volumetric strain dilation loading constitutive model Upstream Oil & Gas sandstone moduli deformation behavior hydrostatic stress Reservoir Characterization anisotropic degradation weak sandstone volumetric deformation...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-094
... the FLAC3D code. The effects of variations in rock mass deformation modulus on the strain/stress relaxation, and thus borehole slotter test results, were investigated numerically. The validity of numerical findings were discussed and compared against practical observations. Accordingly, the borehole slotter...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-104
... variation plane elastoplastic damage modeling coupling discrete approach material orientation mechanical behavior anisotropy Reservoir Characterization orientation tensor application formulation fabric tensor ISRM-Sponsored International Symposium on Rock Mechanics: Rock Characterisation...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-085
... Reservoir Characterization Fluid Dynamics three-dimensional failure process variation hydraulic fracturing rock element Simulation Upstream Oil & Gas modeling damage variable coefficient fluid flow elastic damage constitutive law permeability evolution mechanics flow...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-063
... Reservoir Characterization lower fault coupling relationship detection temperature field Upstream Oil & Gas anomaly strain field IRR temperature Modeling & Simulation tectonic activity variation Earthquake structural geology rock sample loading strain position fracture...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-078
... the strain measurements and for calculating the elastic constants from the biaxial tests. Reservoir Characterization core axis variation Poisson interpretation reservoir geomechanics mean quadratic deviation strain gauge anisotropy determination Upstream Oil & Gas Artificial...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-167
... parameter instrument monitoring strata variation underground mining underground coal mining investigation peak value instrumentation 1 INTRODUCTION Monitoring and measurements of different strata control parameters during underground mining is, generally, done for safety of working, field...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-012
... expanding for siliceous-lime marble. 1 INTRODUCTION W.F. Brace et al. conducted early the experiment of electrical resistance changing with stress of rock and owed the variation to the dilation of bulk [1–2] . On what has already been achieved, the basic law of electrical conduction of rock containing...
Proceedings Papers

Paper presented at the ISRM International Symposium on Rock Mechanics - SINOROCK 2009, May 19–22, 2009
Paper Number: ISRM-SINOROCK-2009-013
... wave velocity MASW Upstream Oil & Gas surface wave Reservoir Characterization variation velocity profile Artificial Intelligence surface strata shear wave velocity classification system assessment rippability assessment excavation characteristic limestone dispersion curve...

Product(s) added to cart

Close Modal