Rock Mass Classification
Contents
- Philosophy Of Quantitative Classifications
- The Classification
- Philosophy Of Classification System
- Management Of Uncertainties
- Present Day Practice
- Scope Of The Book
- Chapter Shear Zone Treatment In Tunnels And
- Foundations
- Shear Zone
- Treatment For Tunnels
- Treatment For Dam Foundations
- Rock Material
- Rock Material
- Classification Of Rock Material
- Class I And Ii Rocks
- Uniaxial Compression
- Stability In Water
- Classification On The Basis Of Slake Durability Index
- Chapter Rock Quality Designation
- Rock Quality Designation (Rqd)
Direct Method
- Indirect Methods
- Seismic Method
- Volumetric Joint Count
- Weighted Joint Density
- Surface Measurement
- Drillhole Measurements
- Chapter Terzaghi’s Rock Load Theory
- Introduction
- Rock Classes
- Rock Mass Classification
- Rock Load Factor
- Modified Terzaghi’s Theory For Tunnels And Caverns
- Chapter Rock Mass Rating (Rmr)
- Introduction
- Collection Of Field Data
- Estimation Of Rock Mass Rating (Rmr)
- Applications Of Rmr
- Average Standup Time For Arched Roof
- Cohesion And Angle Of Internal Friction
- Modulus Of Deformation
- Allowable Bearing Pressure
Shear Strength Of Rock Masses
- Estimation Of Support Pressure
- Interrelation Between Rmr And Q
- Precautions
- Chapter Prediction Of Ground Conditions For
- Tunnelling
- Introduction
- The Tunnelling Conditions
- Prediction Of Ground Conditions
- Prediction Of Support Pressure
- Effect Of Tunnel Size On Support Pressure
- Review Of Existing Approaches
- New Concept On 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 (Grc)
- Coefficient Of Volumetric Expansion Of Failed Rock Mass
- Chapter Rock Mass Index
- Rock Mass Classification
- Introduction
- Calibration Of From Known Rock Mass Strength Data
- Scale Effect
Rate Of Tunnelling
- Introduction
- Classification Of Ground/Job Conditions For Rate Of Tunnelling
- Classification Of Management Conditions For Rate Of Tunnelling
- Combined Effect Of Ground And Management Conditions On Rate Of Tunnelling
- Chapter 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
- Chapter 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 Suggested New Failur
- Theory
- Failure Of Laminated Rock Mass
- Criterion For Squeezing Of Rock Masses
- Tensile Strength Across Discontinuous Joints
- Dynamic Strength Of Rock Mass
- Residual Strength Parameter
- Chapter Strength Of Discontinuities
- Introduction
- Rock Mass Classification
- Joint Wall Roughness Coefficient (Jrc)
- Relationship Between Jr And Jrc Roughness Descriptions
- Joint Wall Compressive Strength (Jcs)
- Joint Matching Coefficient (Jmc)
- Angle Of Internal Friction
- Shear Strength Of Joint
- Chapter Shear Strength Of Rock Masses In
- Slopes
- Mohr Coulomb Strength Parameters
- Non Linear Failure Envelopes For Rock Masses
- Strength Of Rock Masses In Slopes
-
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