... Upstream Oil & Gas äspö diorite strength skb report Reservoir Characterization stress magnitude shear zone experiment pillar stability experiment borehole heater experiment drift Stability Experiment reservoir geomechanics displacement brittle failure MPa äspö pillar...

... by the expression: v m = v + ((1 - 2v)/2)(1 - E m /E) (2) where: v m = poisson's ratio of the rock mass, and v = poisson's ratio of the core specimen. sinβcosβ coefficient rock mass modulus joint system displacement joint plane Poisson rock mass average joint length open joint reciprocal...

... as an adherent structure between the substrate and plate. When the plate is displaced perpendicular and away from the substrate surface (Figures 3), a combined measure of adhesion resistance (about the perimeter of the plate where the liner sits in contact with the intact substrate surface) and material tensile...

... Upstream Oil & Gas material property Fluid Dynamics Simulation flow in porous media displacement rock joint specimen shear process joint surface roughness shear behavior dilation Reservoir Characterization aperture mechanical model direct shear test shear mechanical model...

.... The results show that the extended 3D DDA method can be applied to analyze coupled thermal-mechanical behavior of discontinuous rocks, with potential applications in the design of underground storage caverns and nuclear waste repositories. 2. BASIC PRINCIPLES OF 3D DDA 2.1. Displacement and Deformation...

... and stiffness of immediate roof members jointing in immediate roof cleat density in coal. roof displacement immediate roof Upstream Oil & Gas Thickness Modeling & Simulation displacement metals & mining weighting interval unsupported roof excavation soft roof Longwall...

... Modeling & Simulation fracture characterization reservoir geomechanics complex reservoir metals & mining hydraulic fracturing Reservoir Characterization US government displacement explanation particle echelon fracture principal stress fracture pattern tension site Upstream...

... real time system Upstream Oil & Gas dimension Artificial Intelligence orientation hydraulic fracturing displacement machine learning fracture dimension tiltmeter measurement procedure fracture orientation treatment efficiency real-time estimation inversion hydraulic fracture...

... Equations The main equations involved in a coupled deformation-flow-temperature problem consist of 3 conservative equations and 3 constitutive equations. The unknowns are displacements, pore pressure and temperature, respectively. Force equilibrium equation is expressed as: ( ) 0 + + =s pI f (8...

... and the rock properties were updated to match the formation- averaged displacements of the radioactive bullets. From the compaction log, the behaviour of the reservoir was found to be linear elastic for the anticipated stress changes, and from Figure 7, there seems to be no evidence to assume undrained...

... Modeling & Simulation displacement wellbore orientation reservoir geomechanics strength Upstream Oil & Gas prediction Reservoir Characterization orientation Pariseau orthotropic elastic symmetry bedding heterogeneity plane symmetry evaluation anisotropy wellbore in-situ...

... optical triangulation distance measurement device depth ratio subsidence phenomenon Interferometry Fluid Dynamics laser optical triangulation distance measurement Modeling & Simulation displacement subsidence model sensor model material subsidence profile subsidence factor cavity...

... wellbore integrity Fluid Dynamics Reservoir Characterization reservoir geomechanics Wellbore Design Upstream Oil & Gas displacement subsidence cylindrical surface Reservoir Compaction compressibility compaction shear stress element analysis reservoir simulation Modeling...

... positive) [9]. CANMET s BSM3D block code [8] was used to measure the representative deformation of the rock mass which has well-developed blocks and could indicate the location of progressive block movement and major rock mass displacements. In this case, since the rock mass is essentially de- stressed...

... deformation. Daemen (1975) lie- fines the ground characteristic as the relation be- tween the inwards radial displacement and the radilJl pressure or support pressure. Rock mass characteris- tic lines allow tunnelling engineers systematically to observe where the pressure on the tunnel lining might...

... detection of weak zones ahead of the tunnel face is a key factor. It has been shown in the literature that tunnel wall displacements are sensitive to the presence of weak rock ahead of the tunnel face. In this paper, we investigate the influence of rock mass anisotropy (transverse isotropy) and rock stress...

... at a rough estimate of displace- ments to be expected. w 5 :~ 't E . ~. r -030 J!l ~ dI --1..JJld~ ~ L i o D Q. C ~ B "' _ ' __ III ..JJ 0 0 0 0 o a 0 a 0 a 0 0,00:c 0 00000 a 0 a 0 a '" t- O) N '" t- en '" N N N N ,~ Station [m] Figure 3, An ilio Tu nnel , Greece : Geological longitudinal section...

... was used to analyze the displacements in the specimen. A hologram is a record of the interference pattcrn formed on a high resolution photographic plate when two sets of coherent light waves, a reference and an object beam which illuminate the object interfere (Duk-won et al. 1977). A beam splitter splits...

... displacement relaxation stress reduction abutment relaxation compressive stress reduction excavation Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (005) © 2000 Balkema, Rotterdam, ISBN 90 5809 1554 The impact of abutment relaxation on stability of underground mine openings Mark S. Diederichs...

... impact on the results obtained from numerical modeling analyses. For that purpose, a new constitutive model for rock joints, called the CSDS model (for Complete Stress-Displacement Surface) has recently been de- veloped (Simon 1999, Simon et al. 1999a). In this paper, the authors present the results...