Time-Dependency in Rock Mechanics and Rock Engineering

This book is concerned with time-dependency in rock mechanics and rock engineering, whose spectrum is very wide. While the term “time-dependency” involves time-dependent behavior/rate-dependent behavior of rocks in a conventional sense, this books attempts to cover the spectrum as much as possible including coupled processes of thermal, hydrological and diffusions in rocks. It presents theoretical formulations, experiments, numerical formulation and examples of applications. Of paramount concern is the long-term response and stability of rock engineering structures, including for instance man-made and natural slopes and underground facilities such as tunnels and powerhouses.

1 Introduction 2 Time-dependent (rate-dependent) behaviour of rocks 2.1 Introduction 2.2 Creep behaviour and testing techniques 2.3 Rate-dependency of rocks and testing 2.4 Correlations between rate-dependent and creep tests 2.5 Constitutive modeling 2.6 Correlation between compression creep tests and impression creep tests 2.7 Creep experiments on Oya tuff 2.8 Applications of the long term response and stability of rock engineering structures 3 Water migration in soft rocks and its effects on the response of rock structures 3.1 Introduction 3.2 Modeling of water absorption/desorption processes and associated volumetric changes in rocks 3.3 Moisture migration process and volumetric changes 3.4 Swelling-shrinkage process 3.5 Material property changes and degradation 3.6 Applications 4 Thermo-mechanical behaviour of rocks and heat transport in rocks 4.1 Introduction4.2 Mechanical modeling heat transport in rocks 4.3 Numerical modeling of thermo-mechanical responses of rocks 4.4 Thermal properties of rocks and their measurements 4.5 Applications 5 Hydromechanics of rocks and rock engineering structures 5.1 Introduction 5.2 Fundamental equation of fluid flow in porous media 5.3 Permeability characteristics of rocks and discontinuities 5.4 Some specific simulations and applications to actual experiments 5.5 Mechanical coupling effect of groundwater on rocks and discontinuities 5.6 Modeling structures in rocks subjected to ground-water fluctuations 6 Thermo-hydro-diffusion behaviour of rocks 6.1 Introduction 6.2 Mechanical modeling 6.3 Finite element formulation 6.4 Examples and discussions 6.5 Concluding remarks 7 Thermo-hydro-mechanical behaviour of rocks 7.1 Introduction 7.2 Mechanical modeling based on mixture theory 7.3 Finite element formulation 7.4 Examples and discussions 7.5 Analysis for actual ground 7.6 Concluding remarks Appendix 8 Conclusions

Dr. Omer Aydan was born in 1955, and studied Mining Engineering at the Technical University of Istanbul, Turkey (B.Sc., 1979), Rock Mechanics and Excavation Engineering at the University of Newcastle upon Tyne, UK (M.Sc., 1982), and finally received his Ph.D. in Geotechnical Engineering from Nagoya University, Japan in 1989. Heworked at Nagoya University as a research associate (1987-1991), and at the Department of Marine Civil Engineering at Tokai University, first as Assistant Professor (1991-1993), then as Associate Professor (1993-2001), and finally as Professor (2001-2010). He then became Professor of the Institute of Oceanic Research and Development at Tokai University, and is currently Professor at the University of Ryukyus, Department of Civil Engineering & Architecture, Nishihara, Okinawa, Japan. Omer has played an active role on numerous ISRM, JSCE, JGS, SRI and Rock Mech. National Group of Japan committees, and has organized several national and international symposia and conferences. He was also made Honorary Professor in Earth Science by Pamukkale University in 2008.