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Keywords: dilation
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Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-459
... scale underground. This paper studies the consequences of a rapid withdrawal of hydrogen on the mechanical stability of a salt cavern. Gaseous hydrogen cooling could generate rock salt dilation, cavern closure and tensile stresses at the cavern wall. Numerical computations using the finite element...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-452
... mpa shear displacement deformation specimen fracture stiffness geology europe government stiffness experiment research institute undisturbed fracture specimen holder shear strength figure 4 rise research institute dilation jacobsson 15th ISRM Congress 2023 & 72nd Geomechanics...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-485
..., which combine the advantages of Fuzzy Controllers and Artificial Neural Networks (ANN). Therefore, the objective of this paper is to use Adaptive Neuro-Fuzzy Inference Systems (ANFIS) to predict the shear strength and corresponding dilation of unfilled discontinuities of rock masses, incorporating...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-260
... international journal geologist grout annulus propagation circumference geology reservoir characterization displacement axial displacement initiation masoumi confinement equation hagan wellbore design saydam geological subdiscipline grout interface rock mechanic dilation 15th ISRM Congress...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-284
... continuum modelling approaches, requiring the development of advanced constitutive models. A continuum constitutive approach based on the Hoek-Brown failure criterion and enhanced by introducing a softening rule to replicate the brittle behaviour of rock masses and associated failure due to dilatating...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-379
... ABSTRACT: Experimental study of rock specimens under uniaxial stress path has shown that ultimate failure in rocks occurs after the onset of crack coalescence associated with dilatancy. Typically, rock dilatancy is represented by estimation of averaged specimen-scale total volumetric strains...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-374
... ABSTRACT: This study investigates the suitability of an adapted portable shearing box to measure the shear-induced dilation of a discontinuity and how the basic friction angle can be reliably derived from the shear data with dilation. Results show that samples with significant roughness...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-421
... ABSTRACT: An extensive direct shear test program has been conducted on regular saw-tooth artificial joint samples under constant normal load (CNL) conditions. The analysis of shear data reveals that shear stiffness ( k ss = dτ / du ) and dilation ( ψ = dv / du ), where τ and v...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-428
...-yielding parameters like cohesion, friction and dilation angles of brittle rocks and shows their behavior during plastic deformation. The analysis results show that in post peak region, the basalt rock is brittle in nature. It exhibits a negative exponential relationship of cohesion and dilation angle...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-115
... Abstract A coupled Thermal-Hydraulic-Mechanical-Chemistry (THMC) model is developed to simulate the combined effect of fracture fluid flow, heat transfer, shearing dilation and chemical dissolution/precipitation behaviors. Fluid flow is calculated based on the cubic law and Green's function...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-186
... of both single and coplanar embedded (intermittent) joints on the shear strength of direct shear test samples were experimentally examined. specimen shear strength configuration powder upstream oil & gas plane dilation breakage bridge reservoir characterization shear displacement...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-197
... barton dilation correlation patton Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Geometrical and mechanical characterization of 3D-printed rock joints J. Jaber, M. Conin, O. Deck, C. Grandclaude, M...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-243
... reservoir characterization rebar rockmass structural geology metals & mining deformation dilation excavation roadway bin wang rockbolt displacement rockburst application wellbore integrity zeyang guo weijun wang borehole bent rockbolt tensile strength stiffness strength ortlepp...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-328
... compressive strength (σ c ), the basic friction angle (ϕ b ), the infill friction angle (ϕ fill ), and the horizontal displacement (δ h ). As output, the ANN model provides the shear stress (τ v ) and dilation (δ v ). The architecture of the ANN model with the best performance is 8-20-10-5-2, where each...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-442
... of discontinuities have been used to develop these models based on the concepts of intelligent systems to predict the shear strength and the dilation in unfilled rock joints. The models were developed using Multilayer Perceptron ANN Technique and Takagi-Sugeno Fuzzy Controllers. A practical application in slope...
Proceedings Papers
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-190
... Reservoir Characterization Upstream Oil & Gas 13th international congress dilation reservoir geomechanics scale effect Mining Science metals & mining strength residual strength specimen arzúa deformability rock sample Wellbore Design Alejano pillar international journal...
Proceedings Papers
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-254
... oil sand hydraulic fracturing enhanced recovery complex reservoir 13th international congress numerical simulation Chen bitumen steam-assisted gravity drainage oilsand dilation landfacies ultra-heavy oilsand hydraulic fracture propagation pay zone Xinjiang Oilfield thermal method...
Proceedings Papers
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-299
... need to be considered. hydraulic fracturing 13th international congress dilation Reservoir Characterization Upstream Oil & Gas mechanism reservoir geomechanics strength numerical simulation complex reservoir discrete fracture network statistics pullout rock mass failure...
Proceedings Papers
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-140
... of concrete/rock joints subjected to various CNS loading conditions. The model has been found to accurately predict the dilation, normal stress and shear stress behaviour for a regular triangular saw-tooth joint up to the peak shear stress. Moreover, the peak shear stresses of concrete-rock joints...
Proceedings Papers
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-229
... modulus varies from 15 to 25 GPa, and the Poisson s ratio from 0.23 to 0.43. The elastic parameters tend to be independent of the confining pressures. The distortional strain energy at dilation and at failure from various loading rates varies linearly with the mean strain energy. The proposed empirical...
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