Stella & Rose's Books

Contents

• Foreword
• Preface
• 1 An Overview of Rock Support Design
• 1.1 Introduction
• 1.2. Stages in mine-development
• 1.2.1 Exploration and preliminary design
• 1.2.2 Mine design
• 1.2.3 Early years of mining
• 1.2.4 Later years of mining
• 1.3 Support design
• 2 Assessing acceptable risks in design
• 2.1 Introduction
• 2.2 Factor of safety
• 2.3 Sensitivity studies
• 2.4 The application of probability to design
• 2.5 Probability of failure
• 2.6 Problems to which probability cannot be applied
• 3 Evaluation of engineering geological data
• 3.1 Introduction
• 3.2 Engineering geological data collection
• 3.3 Structural geological terms
• 3.4 Structural geological data collection
• 3.5 Structural geological data presentation
• 3.6 Geological data analysis
• 4 Rock mass classification
• 4.1 Introduction
• 4.2 Engineering rock mas classification
• 4.2.1 Terzaghi's rock mass classification
• 4.2.2 Classifications involving stand-up time
• 4.2.3 Rock quality designation index (RDQ)
• 4.2.4 Rock structure rating (RSR)
• 4.3 Geomechanics classification
• 4.4 Modifications to RMR for mining
• 4.5 Rock tunnelling quality index, Q
• 4.6 Using rock mass classification systems
• 4.7 Estimation of in situ deformation modulus
• 5 Shear strength of discontinuities
• 5.1 Introduction
• 5.2 Shear strength of planar surfaces
• 5.3 Shear strength of rough surfaces
• 5.3.1 Field estimates of JRC
• 5.3.2 Field estimates of JCS
• 5.3.3 Influence of scale on JRC and JCS
• 5.4 Shear strength of filled discontinuities
• 5.5 Influence of water pressure
• 5.6 Instantaneous cohesion and friction
• 6 Analysis of structurally controlled instability
• 6.1 Introduction
• 6.2 Identification of potential wedges
• 6.3 Support to control wedge failure
• 6.3.1 Rock bolting wedges
• 6.3.2 Shotcrete support for wedges
• 6.4 Consideration of excavation sequence
• 6.5 Application of probability theory
• 7 In situ and induced stresses
• 7.1 Introduction
• 7.2 In situ stresses
• 7.2.1 The World Stress Map
• 7.2.2 Developing a stress measuring programme
• 7.3 Analysis of induced stresses
• 7.3.1 Numerical methods of stress analysis
• 7.3.2 Two-dimensional and three-dimensional models
• 7.3.3 Stress analysis using the program PHASES
• 8 Strength of rock and rock masses
• 8.1 Introduction
• 8.2 Definition of the problem
• 8.3 Strength of intact rock
• 8.4 The strength of jointed rock masses
• 8.5 Use of rock mass classifications for estimating GSI
• 8.6 When to use the Hoek-Brown Failure criterion
• 9 Support design for overstressed rock
• 9.1 Introduction
• 9.2 Support interaction analysis
• 9.2.1 Definition of failure criterion
• 9.2.2 Analysis for tunnel behaviour
• 9.2.3 Deformation of an unsupported tunnel
• 9.2.4 Deformation characteristics of support
• 9.2.5 Estimates of support capacity
• 9.2.6 Support interaction example
• 9.3 The PHASES program
• 9.3.1 Support interaction analysis using PHASES
• 10 Progressive spalling in massive brittle rock
• 10.1 Introduction
• 10.2 Examples of spalling in underground excavations
• 10.3 the AECL Underground Research Laboratory
• 10.3.1 In situ stresses at 420 level
• 10.3.2 Properties of Lac du Bonnet granite
• 10.3.3 URL Rooms 413 and 405
• 10.3.4 URL Test tunnel
• 10.4 Example from El Teniente Mine, Chile
• 10.5 South African experience
• 10.6 Implications for support design
• 10.6.1 Rockbolting
• 10.6.2 Shotcrete
• 10.6.3 Discussion
• 11 Typical support applications
• 11.1 Introduction
• 11.2 'Safety' support systems
• 11.3 Permanent mining excavations
• 11.4 Drawpoints and orepasses
• 11.5 Small openings in blocky rock
• 11.6 Small openings in heavily jointed rock
• 11.7 Pre-support of openings
• 11.7.1 Cut and fill stope support
• 11.7.2 Pre-reinforcement of permanent openings
• 11.7.3 Reinforcement of non-entry stopes
• 12 Rockbolts and dowels
• 12.1 Introduction
• 12.2 Rockbolts
• 12.2.1 Mechanically anchored rockbolts
• 12.2.2 Resin anchored rockbolts
• 12.3 Dowels
• 12.3.1 Grouted dowels
• 12.3.2 Friction dowels of 'Split Set' stabilisers
• 12.3.3 'Swellex' dowels
• 12.4 Load-deformation characteristics
• 13 Cablebolt reinforcement
• 13.1 Introduction
• 13.2 Cablebolt hardware
• 13.3 Cablebolt bond strength
• 13.4 Grouts and grouting
• 13.5 Cablebolt installation
• 13.6 Modified cablebolts
• 14 The Stability Graph method
• 14.1 Introduction
• 14.2 The Stability Graph method
• 14.2.1 The stability number, N
• 14.2.2 The shape factor, S
• 14.2.3 The stability graph
• 14.3 Cablebolt design
• 14.4 Discussion of the method
• 14.5 Worked stability graph example
• 14.5.1 Structural geology
• 14.5.2 Q' classification
• 14.5.3 Preliminary stope design
• 15 Shotcrete support
• 15.1 Introduction
• 15.2 Shotcrete technology
• 15.2.1 Dry mix shotcrete
• 15.2.2 Wet mix shotcrete
• 15.2.3 Steel fibre reinforced microsilica shotcrete
• 15.2.4 Mesh reinforced shotcrete
• 15.3 Shotcrete application
• 15.4 Design of shotcrete support
• References
• Software Information
• Author Index
• Subject Index