Rock mechanics based on an anisotropic jointed rock model (AJRM) / / Walter Wittke

• Record Nr.: UNISA996204784603316
• Autore: Wittke Walter
• Pubbl/distr/stampa: Berlin : , : Ernst & Sohn, , [2014]; ©2014
• ISBN: 3-433-60429-0; 3-433-60428-2; 3-433-60431-2
• Descrizione fisica: 1 online resource (891 p.)
• Disciplina: 624.15132
• Soggetti: Rock mechanics
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Cover; Title Page; Preface; Blank Page; Contents; 1 Introduction; Part A: Fundamentals and Models; 2 Structure of Rock; 2.1 Introduction; 2.2 Rock Groups; 2.3 Intact Rock; 2.4 Faults; 2.5 Folds; 2.6 Discontinuities; 2.7 Rock Mass; 2.7.1 Examples; 2.7.2 Description of Discontinuities; 2.7.3 Structural Models; 3 Stress-Strain Behavior of Jointed Rock; 3.1 Introduction; 3.2 Intact Rock; 3.2.1 Elastic Behavior; 3.2.2 Strength and Failure Criteria; 3.2.3 Post-Failure Behavior; 3.2.4 Intact Rocks with Deviations from Elastic-Viscoplastic Stress-Strain Behavior; 3.3 Discontinuities; 3.3.1 Types of Discontinuities3.3.2 Stress-Displacement Behavior of Discontinuities Loaded by a Normal Compressive Stress; 3.3.3 Strength and Failure Criteria; 3.3.4 Stress-Displacement Behavior of Discontinuities Loaded by a Normal Stress and a Shear Stress; 3.4 Rock Mass; 3.4.1 Discrete Model; 3.4.2 Homogeneous Model; 3.4.3 Combination of the Homogeneous Model with Discrete Models of Individual Discontinuities; 4 Squeezing Rock; 4.1 Introduction; 4.2 Phenomenon; 4.3 Yielding Support; 4.4 Convergence-Confinement Method; 4.5 Example of a Tunnel in Squeezing Rock; 4.5.1 Statement of Problem, Analysis Model, Parameters and Analyzed Cases4.5.2 Reference Case; 4.5.3 Influence of Residual Strength; 4.5.4 Influence of Discontinuities; 4.5.5 Influence of Supporting Pressure; ; 4.5.6 Conclusions; 5 Rock Salt; 5.1 Introduction; 5.2 Stress-Strain Behavior; 5.3 Validation of Model; 6 Permeability and Seepage Flow; 6.1 Introduction; 6.2 Porous Intact Rock; 6.2.1 Porosity; 6.2.2 Darcy's Law and Permeability; 6.3 Discontinuities; 6.3.1 Laminar Flow; 6.3.2 Turbulent Flow; 6.4 Rock Mass; 6.4.1 Discrete Model; 6.4.2 Homogeneous Model; 6.4.3 Seepage Force and Hydrostatic Uplift7 Coupling of Stress-Strain Behavior and Seepage Flow; 7.1 Introduction; 7.2 Permeability of a Discontinuity as a Function of Stress; 7.2.1 Permeability of a Discontinuity as a Function of Normal Stress; 7.2.2 Permeability of a Discontinuity as a Function of Normal Compressive Stress and Shear Stress; 7.3 Rock Mass; 7.3.1 Discrete Model; 7.3.2 Homogeneous Model; 8 Swelling Rock; 8.1 Introduction; 8.2 Swelling Mechanisms; 8.3 Water Uptake; 8.4 Swelling; 8.5 Coupled Model; 8.6 Characteristic Parameters of the Gypsum Keuper; 8.7 Gypsum Keuper in its Natural Condition8.8 Calibration of Model; 9 Rock Mass In-Situ Stress; 9.1 Introduction; 9.2 Stresses due to Gravity; 9.2.1 Horizontal Ground Surface; 9.2.2 Influence of Topography; 9.3 Tectonic Stresses; 9.4 Stresses due to Pre-loading and Subsequent Unloading; 9.5 Residual Stresses; 9.6 Effect of Rock Mass Inhomogeneity; Part B: Analysis and Design Methods; 10 Finite Element Method (FEM); 10.1 Introduction; 10.2 The Principle of FEM; 10.3 Element Types; 10.3.1 Three-Dimensional Isoparametric Elements; 10.3.2 Truss Elements; 10.3.3 Spring Elements; 10.4 Computation Section
• Sommario/riassunto: This book focuses on the fundamentals of rock mechanics as a basis for the safe and economical design and construction of tunnels, dam foundations and slopes in jointed and anisotropic rock. It is divided into four main parts:- Fundamentals and models- Analysis and design methods- Exploration, testing and monitoring- Applications and case histories.The rock mechanical models presented account for the influence of discontinuities on the stress-strain behavior and the permeability of jointed rock masses. Th