Design analysis rock mechanics/ Pariseau,William G.

Preface Acknowledgments 1 Introduction 1.1 A practical design objective 1.2 Problem solving 1.3 Units 1.4 Background information - Rock mechanics literature - Mechanical properties of rock 1.5 Problems - Basics - Review of stress - Review of strain and elasticity - Additional Problems 2 Slope stability 2.1 Translational rock slope failures - Planar block slides - Safety factor improvement - Wedge failures 2.2 Rotational slope failures - Remedial measures - Base failures - Toppling failures 2.3 Problems - Planar block slides - Wedge failures - Rotational slides - Dynamics, toppling - Additional Problems 3 Shafts 3.1 Single unlined naturally supported shafts - Shaft wall stress concentration - Unlined circular shafts - Unlined elliptical shafts - Unlined rectangular shafts - Shaft wall strengths 3.2 Shaft wall support and liners - Shaft wall bolting - Circular shaft liners - Circular steel rings 3.3 Multiple naturally supported shafts - Circular shafts in a row - Shaft pillar safety - Two circular shafts of different diameter - Elliptical shafts in a row - Rectangular shafts in a row 3.4 Problems - Single, naturally supported shafts - Supported shafts, liners, bolts, rings - Multiple shafts - Additional Problems 4 Tunnels 4.1 Naturally supported tunnels - Single tunnels - Single tunnel joints - Multiple tunnels 4.2 Tunnel support - Fixed steel sets - Pattern bolting - rock reinforcement - Combination support - Yieldable steel arches - Light segment liner 4.3 Problems - Naturally supported tunnels - Supported tunnels - Rock mass classification schemes, RQD - Additional Problems 5 Entries in stratified ground 5.1 Review of beam analysis - Basic beam formulas - Important special cases 5.2 Softrock entries - Naturally supported roof - Bolted roof - Point anchored roof bolting - Distributed anchorage roof bolting - Roof trusses - Additional Examples 5.3 Problems - Naturally supported roof - Bolted roof - Additional Problems 6 Pillars in stratified ground 6.1 Pillars in a single seam - Tributary area, extraction ratio analysis - Size effect on strength 6.2 Pillars in dipping strata - Extraction ratio formulas for pillars in dipping seams - An unconventional Mohr's circle representation - Generalized Mohr's circle - Backfill effects on pillar safety factors 6.3 Pillars with joints - Flat seam pillars with joints - Dipping seam pillars with joints 6.4 Pillars in several seams - Columnized main entry pillars - Staggered chain entry pillars 6.5 Barrier pillars 6.6 Problems 7 Three-dimensional excavations 7.1 Naturally supported caverns and stopes - Spheroidal excavations - Cubical and brick-shaped excavations 7.2 Joints in cavern and stope walls 7.3 Tabular excavations 7.4 Cavern and stope support - Hardrock mine fill - Cable bolts support - Additional Examples 7.5 Problems - 3D Caverns - Back fill - Cable bolting - Additional Problems 8 Subsidence 8.1 Chimneys - Chimney cave geometry - Caving rock flow - Chimney cave forces - Chimney cave water forces - Support near caving ground 8.2 Troughs - Limit of subsidence - Maximum subsidence - Critical width - NCB subsidence profile - Angle of draw and subsidence factor adjustments - NCB strain profile - Surface damage - Multipanel, multiseam subsidence - Alternative approaches to subsidence 8.3 Problems - Chimney caving - Combination support - Subsidence troughs - Profile and influence functions 9 Dynamic Phenomena 9.1 Fundamentals of wave propagation - Simple wave propagation models - Reflection at free and fixed faces under normal incidence - Reflection and transmission at an interface under normal incidence - Reflection and transmission at an interface under oblique incidence 9.2 Rock bursts and bumps - Face bursts and bumps - Pillar bursts and bumps - Fault Slip 9.3 Event location 9.4 Problems Appendix A: Background literature A.1 Books about fundamentals of mechanics A.2 Books about rock mechanics A.3 Books containing rock properties A.4 General sources of rock mechanics information Appendix B: Mechanical properties of intact rock and joints B.1 Elastic moduli of intact rock - Young's modulus - Poisson's ratio - Shear modulus - Anisotropy B.2 Strength of intact rock - Tensile strength - Unconfined compressive strength - Compressive strength under confining pressure - Mohr-Coulomb strength - Hoek-Brown strength - Drucker-Prager strength - Nonlinear n-type strength - Compressive strength test data B.3 Joint stiffness - Normal stiffness - Shear stiffness B.4 Joint strength B.5 Simple combinations of intact rock and joints - Continuously jointed rock mass moduli - Discontinuously jointed rock mass moduli - Continuously jointed rock mass strengths - Discontinuously jointed rock mass strengths Appendix C: Rock mass classification schemes for engineering C.1 Rock quality designation C.2 Terzaghi modified scheme C.3 RSR, RMR, and Q C.4 Comparisons of Hp estimates C.5 GSI C.6 Comment Appendix D: Some useful formulas D.1 Stress - Normal and shear stress on a plane - Principal (normal) stresses - Principal shear stresses - Mohr's circle D.2 Strain - Strain rosettes - Small strain-displacement relations D.3 Stress-strain relationships, Hooke's law - Hooke's law in one dimension - Young's modulus and shear modulus - Hooke's law in two-dimensions - plane stress and plane strain References Index