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Article
Permeability Evolution in a Fracture in Granite During Isotropic Compression
The permeability evolution of fractures in geologic media plays a pivotal role in various geo-mechanical activities, ranging from energy resources recovery to the deep geologic disposal of hazardous materials....
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Article
Observations and Computational Simulation of River Valley Contraction at the **luodu Dam, Yunnan, China
River valley contraction (RVC) has increased continuously at the **luodu Dam site since the completion of the slope excavation that commenced on December 1, 2008. Previous studies on RVC only analyzed the disp...
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Article
Triaxial Compressive Strength, Failure, and Rockburst Potential of Granite Under High-Stress and Ground-Temperature Coupled Conditions
Deep underground rock tunnels and caverns in mountainous areas are often subjected to the coupling impacts of high geo-stresses and high-ground temperature that can threaten the stability of rock masses. This ...
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Article
Open AccessPoroelastic properties of rocks with a comparison of theoretical estimates and typical experimental results
The paper develops theoretical estimates for the parameters that describe the classical theory of poroelasticity for a fluid-saturated porous medium, with a porous elastic skeleton that can exhibit imperfect g...
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Article
The influence of seepage characteristics on the reliability of a tunnel roof under dynamic disturbances
Tunnels in use are often affected by dynamic effects. The reliability method is adopted in this paper to comprehensively examine the uncertainty parameters of the structure and the fractures within the rock ma...
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Article
Modeling the Approach of Non-mated Rock Fracture Surfaces Under Quasi-static Normal Load Cycles
This paper examines the quasi-static behaviour of a non-mated rock fracture during the first and second loading cycles. Asperity deformation, substrate deformation, asperity interaction and gouge production ar...
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Chapter and Conference Paper
Multiphasic Approaches for Estimating THM Properties of Heterogeneous Rocks
The estimation of the Thermo-Hydro-Mechanical (THM) properties of heterogeneous rocks is influenced by the scale of the heterogeneity in relation to the dimensions of the test specimen, which will enable the t...
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Article
Open AccessThe influence of the pore shape on the bulk modulus and the Biot coefficient of fluid-saturated porous rocks
Fluid-saturated rocks are multi-phasic materials and the mechanics of partitioning the externally applied stresses between the porous skeleton of the rock and the interstitial fluids has to take into considera...
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Article
Experimental Investigation of the Effect of Salt Precipitation on the Physical and Mechanical Properties of a Tight Sandstone
Salt precipitation in rocks is a strongly coupled physico-chemical process, which has implications on natural gas extraction efficiency. The paper examines the effect of salt precipitation on porosity, permeab...
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Chapter and Conference Paper
Geomechanical Influences of Interface Dilatancy
This paper examines the influence of dilatant processes that can occur at a discontinuity of finite dimensions located at a compressed elastic geological interface, due to relative shear movement in the plane ...
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Article
Open AccessA Multi-Phasic Perspective of the Intact Permeability of the Heterogeneous Argillaceous Cobourg Limestone
The Cobourg limestone is a heterogeneous argillaceous rock consisting of lighter nodular regions of calcite and dolomite, interspersed with darker regions composed of calcite, dolomite, quartz and a clay fraction...
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Article
The Biot coefficient for a low permeability heterogeneous limestone
This paper presents the experimental and theoretical developments used to estimate the Biot coefficient for the heterogeneous Cobourg Limestone, which is characterized by its very low permeability. The coeffic...
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Article
Computational Modelling of Groundwater Inflow During a Longwall Coal Mining Advance: A Case Study from the Shanxi Province, China
The paper investigates groundwater inflow into a longwall working face of the **egou Coal Mine located in the northwest of the Shanxi province, China. Three modelling approaches, including basic Darcy modellin...
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Chapter and Conference Paper
The Biot Coefficient for a Low Permeability Geomaterial with a Heterogeneous Fabric
The paper describes a research methodology that can be adopted for estimating the Biot coefficient for a low permeability rock that has a heterogeneous internal fabric. Experimental techniques that address the...
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Chapter and Conference Paper
Poro-Hyperelasticity: The Mechanics of Fluid-Saturated Soft Materials Undergoing Large Deformations
This paper presents recent advances in the modelling of porous hyperelastic materials the pore space of which is filled with an ideal fluid. The incorporation of hyperelastic behavior of the porous skeleton en...
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Article
Open AccessIndentation of a surface-stiffened elastic substrate
The paper deals with the problem of the indentation of a substrate in the form of an isotropic elastic halfspace that is reinforced at the surface by a bonded layer, which has flexibility characteristic of a P...
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Article
A Statistical Correlation Between Permeability, Porosity, Tortuosity and Conductance
A statistical evaluation of 13,000 numerical simulations of random porous structures is used to establish a correlation between permeability, porosity, tortuosity and conductance. The random structures are gen...
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Article
On Boussinesq’s problem for a cracked halfspace
This paper examines the axisymmetric elastostatic problem that deals with the action of a concentrated normal force on the surface of an isotropic elastic halfspace containing a penny-shaped crack. The mathema...
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Article
Stress-Induced Permeability Alterations in an Argillaceous Limestone
The paper presents the results of experiments that were conducted to determine the influence of a triaxial stress state on the evolution of the permeability of an argillaceous limestone. The limestone rock is ...
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Chapter and Conference Paper
Wormholes: Chemically Damaged States in Carbonate Rocks During CO2-Acidized Fluid Flow
Carbonate rocks and carbonate zones in sandstone formations can experience chemical reaction with CO2 acidized water; this can degrade the fabric of the carbonate rock leading to the formation of damaged regions ...
