Page 6 - Rock Mechanics For Underground Mining

Contents

Preface to the third edition xi
Preface to the second edition xiii
Preface to the first edition xv
Acknowledgements xvii

1 Rock mechanics and mining engineering 1
1.1 General concepts 1
1.2 Inherent complexities in rock mechanics 4
1.3 Underground mining 6
1.4 Functional interactions in mine engineering 9
1.5 Implementation of a rock mechanics programme 13

2 Stress and infinitesimal strain 17
2.1 Problem definition 17
2.2 Force and stress 17
2.3 Stress transformation 19
2.4 Principal stresses and stress invariants 23
2.5 Differential equations of static equilibrium 25
2.6 Plane problems and biaxial stress 26
2.7 Displacement and strain 29
2.8 Principal strains 33
2.9 Strain compatibility equations 34
2.10 Stress-strain relations 34
2.11 Cylindrical polar co-ordinates 37
2.12 Geomechanics convention 39
2.13 Graphical representation of biaxial stress 41
Problems 43
3 Rock mass structure and characterisation 46

3.1 Introduction 46
3.2 Major types of structural features 47
3.3 Important geomechanical properties of discontinuities 51
3.4 Collecting structural data 57
3.5 Presentation of structural data 69
3.6 The hemispherical projection 71
3.7 Rock mass classification 77
Problems 82

4 Rock strength and deformability 85
4.1 Introduction 85
4.2 Concepts and definitions 86

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