ROCK MECHANICS:NEW RESEARCH -- ROCK MECHANICS:NEW RESEARCH -- CONTENTS -- PREFACE -- RESEARCH AND REVIEW STUDIES -- WAVE-ASSOCIATED SEABED BEHAVIOUR NEARSUBMARINE BURIED PIPELINES -- Abstract -- Introduction -- Background -- General Theory of Soil Adaptation to a Loading -- Wave-Seabed Interaction -- Uncoupled Consolidation Models -- Elasticity Theory for Impervious Solids -- Potential Flow Theory -- Heat Conduction Theory -- Coupled Two-Phase Consolidation Models -- Quasi-Static Consolidation Theory -- Semi- and Fully-Dynamic Consolidation Models -- Wave-Seabed-Pipeline Interaction -- Uncoupled Consolidation Models -- Coupled Two-Phase Consolidation Models -- Quasi-Static Soil Models -- Semi-Dynamic Soil Models -- Experimental Studies -- Scope of Current Study -- Three-Dimensional Boundary Value Problem -- Boundary Value Problem: Seabed Soil Consolidation -- Governing Equations -- Boundary Conditions -- Boundary Value Problem: Small-Amplitude Progressive WaterWaves -- Three-Dimensional Finite Element Model -- Finite Element Model -- Spatial Discretization: Finite Element Mesh -- Temporal Discretization -- Validation of Numerical Model -- Verification against an Analytical Solution -- Verification against Experimental Data -- Wave-Induced Seabed Behaviour around Pipeline -- Principal Effective Stresses and the Maximum Shear Stress -- Parametric Study -- Influences of Ocean Wave Properties -- Wave Obliquity -- A. Three-Dimensional Geometry-Based Influences -- B. Influences of Three-Dimensionalities on Amplitudes of Soil Responses -- Wave Period -- Water Depth -- Influences of Seabed Soil Properties -- Soil Shear Modulus -- Soil Permeability -- The Degree of Saturation -- Influences of Trench and Pipeline Geometries -- Trench Width -- The Trench Depth -- Pipeline Diameter -- Wave-Associated Seabed Instabilities -- Soil Shear Failure.

Soil Liquefaction -- Parametric Study -- Three-Dimensionalities of Ocean Waves -- Influences of Seabed Soil Properties -- Modulus of Soil Shear Stiffness -- Soil Permeability -- The Degree of Saturation -- Influences of Trench and Pipeline Geometries -- Trench Depth -- Trench Width -- Pipeline Diameter -- Influences of Ocean Wave Properties -- Wave Period -- Water Depth -- Conclusions and Future Research Directions -- Conclusions -- Future Research Directions -- References -- STRESS AND SCALE-DEPENDENCYOF HYDROMECHANICAL PROPERTIESOF FRACTURED ROCKS -- Abstract -- 1. Introduction -- 1.1. Fracture Systems and REV Concept -- 1.2. Objectives -- 2. Fracture System Analysis and DFN Model Generation -- 2.1. Fracture System Data Analysis -- 2.2. DFN Model Generation -- 3. A Basic Study on Scale and Stress Efffects - Approaches andResults -- 3.1. The Discrete Element Approach -- 3.2. Constitutive Equation of Anisotropic Elastic Solids and the ComplianceTensor -- 3.3. DEM Didcretization and Linearly Independent Boundary Conditions -- 3.4. Constitutive Models for Rock Fractures and Material Properties -- 3.5. Results For REV and Compliance Tensor of the Fractured Rock -- 3.5.1. Scale-Dependency of Elastic Properties -- 3.5.2. Elastic Compliance Tensor Approximations -- 3.5.3. Determination of REV -- 3.5.4. Final Results of Elastic Compliance Tensor -- 3.6. Results for Scale Dependency and Permeability Tensor of the FracturedRock -- 3.7. Stress Effects -- 3.7.1. Numerical Approach -- 3.7.2. Results of Permeability Change and Flow Pattern Variation -- 3.7.3. Discussions on the Basic Study -- 3.8. Remarks on the Basic Study and Motivation for Further Development -- 4. Effect of Correlation between Aperture and Size of Fractures -- 4.1. Correlation between Aperture and Size of Fractures -- 4.2. Generation of Fracture System Realizations for DEM Models.

4.2.1. Fracture Aperture Distribution -- 4.2.2. Correlation between Fracture Aperture and Trace Length -- 4.3. Scale-Dependency - REV and Permeability Tensor Calculations -- 4.4. Stress-Dependency with Correlated Aperture and Trace Length -- 4.4.1. Constitutive Relations and Computational Model Aspects -- 4.4.2. Stress-Induced Permeability Changes -- 5. Stress and Scale Effects on Mechanical Strength -- 5.1. Numerical Approach -- 5.2. Results with Constant Fracture Aperture -- 5.3. Results with Correlated Fracture Aperture and Trace Length -- Concluding Remarks -- Acknowledgement -- References -- FAULT-RELATED CARBONATE ROCKSAND EARTHQUAKE INDICATORS:RECENT ADVANCES AND FUTURE TRENDS -- Abstract -- Introduction -- Fault Zone Architecture -- Heat Pulses and Slipping Zone Thickness during Earthquakes -- Mineralogical Record of Earthquakes in Carbonate Rocks -- Pulverized Rocks as Earthquake Record -- Conclusion -- Acknowledgments -- References -- HOW DO CO2 PROMOTING THE FRACTURESOF ROCKS? AN EXPERIMENTAL AND NUMERICALPERSPECTIVE -- Abstract -- 1. Introduction -- 2. Experimental Setting -- 2.1. Experiment Description -- 2.2. Acoustic Emission System -- 2.3. Rock Samples -- 3. Numerical Method -- 3.1. Numerical Description -- 3.2. Partial Differential Equations -- 3.3. Multiphase Characteristic -- 3.4. Finite Element Modeling -- 3.5. Time Dependent Porosity -- 4. Results and Discussion -- 5. Outstanding Challenges -- Conclusion -- Acknowledgements -- References -- MYSTERIES OF ROCK MASSIFS DESTRUCTION -- Abstract -- Introduction -- Summit Grabens -- Caldera-Like Cavities -- The "Bitut Structure" -- The Kyzylkiol Cavity -- Discussion -- Conclusion -- Acknowledgements -- References -- HYDRAULIC CHARACTERIZATION OF FRACTURED ROCKS -- 1. Introduction -- 2. Fluid Flow in Single Fractures -- 2.1. The Cubic Law -- 2.2. Transient Regime in Fracture Flow.

2.3. Hydro-mechanical Coupling -- 3. Hydraulic Tests in Fractured Rock -- 3.1. Hydraulic Tests in Single Wells -- 3.1.1. Test Procedures -- 3.1.2. Test Interpretation -- 3.2. Hydraulic Tests in Multiple Well Systems -- 4. Relationship between Structure and Hydraulic Properties -- 4.1. Estimation of Fracture Transmissivity -- 5. Conclusion -- References -- MAGNETIC, GEOCHEMICAL AND MINERALOGICAL PROPERTIES OF ROCKS AROUND OIL AND GAS RESERVOIRS: IMPLICATIONS FOR MECHANISM OF "CHIMNEY EFFECT" -- Abstract -- Introduction -- 1. Geological Background -- 2. Methods -- 3. Results -- 3.1. Magnetic Properties -- 3.2. Geochemical Analysis -- 3.3. Mineralogic Analysis -- 4. Discussions -- Conclusion -- Acknowledgement -- References -- CORRELATION BETWEEN MICROSTRUCTUREAND PERMEABILITY IN SANDSTONE ROCKS -- Abstract -- Introduction -- Description of Rock Material -- 2.1. X-Ray Computer Tomography (CT-Scanning) -- 2.2. Particle Size Analysis -- 2.3. Petrography -- 2.4. X-Ray Diffraction (XRD) Analyses -- 2.5. X-Ray Fluorescence (XRF) Analyses -- 3. Petrophysical Description - Permeability and Porosity -- 4. Petrophysical Controls on Fluid Flow -- 5. Discussion -- Conclusion -- Acknowledgements -- References -- SHORT COMMUNICATION -- ENVIRONMENTAL IMPACT ON GEOTECHNICALPARAMETERS OF LIMESTONES USEDAS GEOMATERIALS ON NEW CAIROCONSTRUCTION, EGYPT -- Abstract -- Introduction and Background -- Field Inspection -- Lab Analysis -- Petrographical Examination -- Hydrochemical Analysis -- Durability Results -- Geotechnical Studies -- Discussion and Conclusion -- Acknowledgement -- References -- INDEX.