Engineering rock mass classification : tunneling, foundations, and landslides /
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| Author / Creator: | Singh, Bhawani. |
|---|---|
| Imprint: | Burlington, MA : Butterworth-Heinemann, 2011. |
| Description: | 1 online resource |
| Language: | English |
| Subject: | |
| Format: | E-Resource Book |
| URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/11258222 |
Table of Contents:
- Preface
- Acknowledgments
- 1. Philosophy of Engineering Classifications
- The Classification
- Philosophy of Classification System
- Need for Engineering Geological Map
- Management of Uncertainties
- Present-Day Practice
- Scope of the Book
- 2. Shear Zone Treatment in Tunnels and Foundations
- Shear Zone
- Treatment for Tunnels
- Treatment for Dam Foundations
- 3. Rock Material
- Rock Material
- Homogeneity and Inhomogeneity
- Classification of Rock Material
- Class I and II Brittle Rocks
- Uniaxial Compression
- Stability in Water
- Classification on the Basis of Slake Durability Index
- 4. Rock Quality Designation
- Rock Quality Designation
- Direct Method
- Indirect Methods
- Weighted Joint Density
- Red-Flag Effect of Low RQD
- Application of RQD
- 5. Terzaghi's Rock Load Theory
- Introduction
- Rock Classes
- Rock Load Factor
- Modified Terzaghi's Theory for Tunnels and Caverns
- 6. Rock Mass Rating
- Introduction
- Collection of Field Data
- Estimation of RMR
- Applications of RMR
- Precautions
- Rock Mass Excavability Index for TBM
- Tunnel Alignment
- 7. Tunneling Hazards
- Introduction
- Tunneling Conditions
- Empirical Approach for Predicting Ground Conditions
- Theoretical/Analytical Approach
- Effect of Thickness of Weak Band on Squeezing Ground Condition
- Sudden Flooding of Tunnels
- Chimney Formation
- Environmental Hazards due to Toxic or Explosive Gases and Geothermal Gradient
- Conciuding Remarks
- 8. Rock Mass Quality Q-System
- The Q-System
- Joint Orientation and the Q-System
- Updating the Q-System
- Collection of Field Data
- Classification of the Rock Mass
- Estimation of Support Pressure
- Estimation of Deformation or Closure
- Unsupported Span
- Design of Supports
- New Austrian Tunneling Method
- Norwegian Method of Tunneling
- Rock Mass Characterization
- Drainage Measures
- Experiences in Poor Rock Conditions
- Concluding Remarks
- 9. Rock Mass Number
- Introduction
- Interrelation Between Q and RMR
- Prediction of Ground Conditions
- Prediction of Support Pressure
- Effect of Tunnel Size on Support Pressure
- Correlations for Estimating Tunnel Closure
- Effect of Tunnel Depth on Support Pressure and Closure in Tunnels
- Approach for Obtaining Ground Reaction Curve
- Coefficient of Volumetric Expansion of Failed Rock Mass
- 10. Rock Mass Index
- Introduction
- Selection of Parameters used in RMi
- Calibration of RMi from Known Rock Mass Strength Data
- Scale Effect
- Examples (Palmstrom, 1995)
- Applications of RMi
- Benefits of Using RMi
- Limitations of RMi
- 11. Rate of Tunneling
- Introduction
- Classification of Ground/Job Conditions for Rate of Tunneling
- Classification of Management Conditions for Rate of Tunneling
- Combined Effect of Ground and Management Conditions ton Rate of Tunneling
- Tunnel Management (Singh, 1993)
- Poor Tender Specifications
- Contracting Practice
- Quality Management by International Tunneling Association
- 12. Support System in Caverns
- Support Pressure
- Wall Support in Caverns
- Roof Support in Caverns
- Stress Distribution in Caverns
- Opening of Discontinuities in Roof Due to Tensile Stress
- Rock Reinforcement Near Intersections
- Radial Displacements
- Precautions
- 13. Strength Enhancement of Rock Mass in Tunnels
- Causes of Strength Enhancement
- Effect of Intermediate Principal Stress on Tangential Stress at Failure in Tunnels
- Uniaxial Compressive Strength of Rock Mass
- Reason for Strength Enhancement in Tunnels and a New Failure Theory
- Critical Strain of Rock Mass
- Criterion for Squeezing Ground Condition
- Rock Burst in Brittle Rocks
- Tensile Strength Across Discontinuous Joints
- Dynamic Strength of Rock Mass
- Residual Strength Parameters
- 14. Rock Mass Quality for Open Tunnel Boring Machines
- Introduction
- Q and QTBM
- Penetration and Advance Rates
- Cutter Wear
- Penetration and Advance Rates versus QTBM
- Estimating Time for Completion
- Risk Management
- 15. Strength of Discontinuities
- Introduction
- Joint Wall Roughness Coefficient
- Joint Wall Compressive Strength
- Joint Matching Coefficient
- Residual Angle of Friction
- Shear Strength of Joints
- Dynamic Shear Strength of Rough Rock Joints
- Theory of Shear Strength at Very High Confining Stress
- Normal and Shear Stiffness of Rock Joints
- 16. Shear Strength of Rock Masses in Slopes
- Mohr-Coulomb Strength Parameters
- Non-Linear Failure Envelopes for Rock Masses
- Strength of Rock Masses in Slopes
- Back Analysis of Distressed Slopes
- 17. Types of Failures of Rock and Soil Slopes
- Introduction
- Planar (Translational) Failure
- 3D Wedge Failure
- Circular (Rotational) Failure
- Toppling Failure (Topples)
- Ravelling Slopes (Falls)
- Effect of Slope Height and Groundwater Conditions on Safe Slope Angle
- A Basic Landslide Classification System
- Causative Classification
- Comprehensive Classification System of Landslides
- Landslide in Over-Consolidated Clays
- Rock Slope Failures
- Landslide Dams
- 18. Slope Mass Rating
- The Slope Mass Rating
- Slope Stability Classes
- Support Measures
- Modified SMR Approach
- Case Study of Stability Analysis using Modified SMR Approach
- Portal and Cut Slopes
- 19. Landslide Hazard Zonation
- Introduction
- Landslide Hazard Zonation Maps-The Methodology
- A Case History (Gupta and Anbalagan, 1995)
- Proposition for Tea Gardens
- Geographic Information System
- Mega-Regional Landslide Zonation
- 20. Allowable Bearing Pressure for Shallow Foundations
- Introduction
- A Classification for Net Safe Bearing Pressure
- Allowable Bearing Pressure
- Coefficient of Elastic Uniform Compression for Machine Foundations
- Scour Depth Around Bridge Piers
- Rock Parameters to Select Type of Dam
- 21. Method of Excavation
- Excavation Techniques
- Assessing the Rippability
- Rock Mass Classification According to Ease of Ripping
- Empirical Methods in Blasting
- 22. Rock Drillability
- Drillability and Affecting Parameters
- Classification for Drilling Condition
- Other Approaches
- 23. Permeability and Groutability
- Permeability
- Permeability of Various Rock Types
- Permeability for Classifying Rock Masses
- Permeability versus Grouting
- Determination of Permeability
- Grouting
- 24. Gouge Material
- Gouge
- Shear Strength of Filled Discontinuities (Silty to Clayey Gouge)
- Dynamic Strength
- 25. Engineering Properties of Hard Rock Masses
- Hard Rock Masses
- Modulus of Deformation
- UCS
- Uniaxial Tensile Strength
- Strength Criterion
- Support Pressure in Non-Squeezing/Non-Rock Burst Conditions (H
- Half-Tunnels
- 26. Geological Strength Index
- Geological Strength Index
- Generalized Strength Criterion
- Mohr-Coulomb Strength Parameters
- Modulus of Deformation
- Rock Parameters for Intact Schistose
- Estimation of Residual Strength of Rock Masses
- Classification of Squeezing Ground Condition
- 27. Evaluation of Critical Rock Parametere
- Introduction
- Critical Parameters
- Parameter Intensity and Dominance
- Classification of Rock Mass
- Example for Studying Parameter Dominance in Underground Excavation for a Coal Mine with a Flat Roof
- Relative importance of Rock Parameters in Major Projecte
- Interaction between Rock Parameters
- Application in Entropy Management
- 28. In Situ Stresses
- The Need for In Situ Stress Measurement
- Classification of Geological Conditions and Stress Regimes
- Variation of In Situ Stresses with Depth
- Effect of in Situ Stress on Rock Mass Properties
- Core Discing
- Appendix I. Shear and Normal Stiffness of Rock Joints
- Appendix II. Bond Shear Strength of Grouted Bolts
- Index