Rock Mechanics and Engineering

3.

Rock Mass Characterization

3.1.

Concept of Rock Mass vs. Intact Rock

3.1.1.

Definition of Rock Mass

3.1.2.

Engineering Significance

3.1.3.

3.2.

Discontinuities in Rock Masses

3.2.1.

Types of Discontinuities

3.2.1.1.

3.2.1.2.

3.2.1.3.

3.2.1.4.

3.2.1.5.

3.2.1.6.

3.2.2.

Geometric Properties of Discontinuities

3.2.2.1.

3.2.2.1.1.

3.2.2.1.2.

3.2.2.1.3.

3.2.2.2.

3.2.2.3.

3.2.2.4.

3.2.2.5.

Surface Roughness

3.2.2.5.1.

Joint Roughness Coefficient

3.2.2.5.2.

Measurement Methods

3.2.2.6.

Filling Material

3.2.2.6.1.

Types of Fillings

3.2.2.6.2.

Engineering Implications

3.2.2.7.

Weathering of Discontinuities

3.3.

Rock Mass Classification Systems

3.3.1.

Rock Mass Rating System

3.3.1.1.

Parameters and Scoring

3.3.1.2.

3.3.2.

Tunnelling Quality Index

3.3.2.1.

Parameters and Calculation

3.3.2.2.

3.3.3.

Geological Strength Index

3.3.3.1.

Visual Assessment

3.3.3.2.

3.3.3.3.

Quantification Methods

3.3.4.

Rock Mass Index

3.3.4.1.

Calculation and Use

3.3.5.

Comparison of Classification Systems

3.4.

Block Size and Shape

3.4.1.

3.4.2.

3.4.3.

Influence on Engineering Behavior

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2. Fundamental Properties of Intact Rock

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4. Stress and Strain in Rock