Kooperativer Bibliotheksverbund

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Format: 1 online resource (286 pages) : , illustrations

ISBN: 0-12-849900-1 , 0-12-804401-2

Note: Front Cover -- Rockbolting: Principles and Applications -- Copyright -- Dedication -- Contents -- Preface -- Biography -- Chapter One: Introduction -- Reference -- Chapter Two: Typical Rockbolts -- 2.1. Introduction -- 2.2. Mechanical Rockbolt -- 2.2.1. Expansion Shell Rockbolt -- 2.2.2. Slot-and-Wedge Rockbolt -- 2.3. Grouted Rockbolt -- 2.3.1. Fully Grouted Rebar Bolt -- 2.3.2. Fully Grouted Threadbar -- 2.3.3. End-Grouted Bolt -- 2.3.4. Fully Grouted Slot-and-Wedge Rockbolt -- 2.4. Self-Drilling Rockbolt -- 2.5. Cablebolt -- 2.6. Frictional Rockbolt -- 2.6.1. Split Set -- 2.6.2. Inflatable Rockbolt -- 2.7. Combined Rockbolt -- 2.8. Energy-Absorbing Yield Rockbolt -- 2.8.1. Cone Bolt -- 2.8.2. D-Bolt -- 2.8.3. Garford Solid Bolt -- 2.8.4. Yield-Lok -- 2.8.5. Durabar -- 2.8.6. Roofex -- 2.8.7. He Bolt -- 2.9. Accessories to Rockbolt -- 2.9.1. Plates -- 2.9.2. Nuts -- 2.9.3. Washers -- References -- Chapter Three: Performance of Rockbolts -- 3.1. Testing Methods -- 3.1.1. Laboratory Static Testing -- 3.1.2. Laboratory Dynamic Testing -- 3.2. Static Performance of Conventional Rockbolts -- 3.2.1. Under Axial Pull or Lateral Shear -- Mechanical Rockbolts -- Fully-Grouted Rebar Bolts -- Split Set -- Twin Strand Cablebolts -- Fiberglass Rockbolts -- Summary -- 3.2.2. Under Both Axial Pull and Lateral Shear -- 3.3. Performance of Energy-Absorbing Rockbolts -- 3.3.1. Cone Bolt -- 3.3.2. D-Bolt -- 3.3.3. Garford Bolt -- 3.3.4. Yield-Lok -- 3.3.5. Durabar -- 3.3.6. Roofex Bolt -- 3.3.7. He Bolt -- 3.4. Field Observations -- References -- Chapter Four: Mechanics of Rockbolting -- 4.1. Types of Rockbolts -- 4.2. Rockbolt Models -- 4.2.1. Two-Point Anchored Rockbolts -- 4.2.2. Fully Encapsulated Rockbolts -- 4.2.3. Frictional Rockbolts -- 4.2.4. Energy-Absorbing Rockbolts -- 4.3. Interaction of Rockbolts With Rock -- 4.3.1. Lang's Physical Model. , 4.3.2. Loading Patterns In Situ -- 4.3.3. Fully Encapsulated Rockbolts -- 4.3.4. D-Bolt -- 4.3.5. Inflatable Rockbolts -- The Primary Contact Stress -- The Secondary Contact Stress -- The Borehole Pressure pi -- Anchoring Mechanisms in Soft and Hard Rock -- 4.4. Interaction of Rockbolts With Other Types of Support Devices -- 4.5. Principles of Rock Support -- 4.5.1. Ground Response Curve (GRC) and Support Characteristic Curve (SCC) -- 4.5.2. Construction of GRC -- 4.5.3. SCC of Rockbolts -- The Stiffness of Two-Point Anchored Rockbolts -- The Stiffness of Fully Encapsulated Rebar Bolts -- The Stiffness of Frictional Rockbolts -- The Stiffness of Energy-Absorbing Rockbolts -- References -- Further Reading -- Chapter Five: Rockbolting Design -- 5.1. Failure Modes of Rockmasses In Situ -- 5.1.1. Block Fall Under Gravity -- 5.1.2. Shear Failure in Soft and Weak Rock -- 5.1.3. Extension Failure in Hard Rock -- 5.1.4. Rockburst -- 5.2. Loading Conditions Underground and Suitable Rockbolt Types -- 5.2.1. In Low Stress Rockmasses -- 5.2.2. In High Stress Rockmasses -- 5.2.3. Suitable Rockbolt Types -- 5.3. Design Principles -- 5.3.1. Natural Pressure Arch -- 5.3.2. Design Methodology -- Australian Methodology -- Canadian and Scandinavian Methodology -- South African Support Methodology -- 5.3.3. Bolt Length and Bolt Spacing -- 5.3.4. Factor of Safety -- Factor of Safety for Gravitational Rock Falls -- Factor of Safety in Squeezing Rock -- Factor of Safety in Burst-Prone Rock -- 5.3.5. Compatibility Between Support Devices -- 5.4. Types of Rockbolting -- 5.4.1. Wedge Block in Roof -- Stability Analysis -- Bolting -- 5.4.2. Wedge Block in Wall -- 5.4.3. Arching Bolting -- 5.4.4. Tieback Bolting -- 5.4.5. Suspension Bolting -- 5.4.6. Stitching Bolting -- 5.4.7. Rockbolting in Large-Scale Caverns -- 5.4.8. Forepoling -- 5.4.9. Rockbolting in Burst-Prone Rock. , References -- Further Reading -- Chapter Six: Installation of Rockbolts -- 6.1. Introduction -- 6.2. Mechanical Rockbolts -- 6.3. Split Set -- 6.4. Inflatable Rockbolts -- 6.5. Grouted Rebar Bolts -- 6.5.1. Fully Grouted Bolts With Cement -- 6.5.2. Fully Grouted Bolts With Resin -- 6.5.3. End-Grouted Bolts With Resin -- 6.6. CT-Bolts -- 6.7. D-Bolts -- 6.7.1. Grouted With Cement -- 6.7.2. Grouted With Resin -- 6.8. Cone Bolts -- 6.9. Cablebolts -- 6.10. Mechanized Rockbolt Installation -- References -- Chapter Seven: Quality Control of Rockbolting -- 7.1. Introduction -- 7.2. Pull Tests -- 7.3. Quality Control Tests -- 7.3.1. Tests of Bolt Steel -- 7.3.2. Tests of Nut -- 7.3.3. Tests of Bolt Plate -- 7.3.4. Strength Tests of Cementitious Grout -- 7.4. Design Proof Tests -- 7.4.1. Tests of Load-Extension Behavior -- 7.4.2. Viscosity Tests of Cementitious Grout -- 7.4.3. Tests of Bond Strength -- 7.4.4. Inspection of Boreholes -- 7.5. Proof Tests -- References -- Further Reading -- Chapter Eight: Numerical Modeling -- 8.1. Introduction -- 8.2. Models for Local Reinforcement -- 8.2.1. Mechanical Model -- 8.2.2. Conceptual Model -- 8.3. Conceptual Model for Global Reinforcement -- 8.4. Conceptual Model for Bolt-Reinforced Rockmass -- References -- Chapter Nine: Cases of Rockbolting in Practice -- 9.1. General -- 9.2. Case 1: Dynamic Rock Support in a Burst-Prone Mine -- 9.3. Case 2: Static Rock Support in a Burst-Prone Mine -- 9.4. Case 3: Rock Support in the Kiruna Mine -- 9.4.1. Geology and Rock Conditions -- 9.4.2. Seismicity -- 9.4.3. Dynamic Rock Support System -- 9.5. Case 4: Rock Support in an Underground Iron Ore Mine -- 9.5.1. Static Rock Support -- 9.5.2. Dynamic Rock Support -- 9.6. Case 5: Rock Support in the Coleman Mine -- 9.7. Case 6: Rock Support in the Creighton Deep Mine -- 9.7.1. Primary Support. , 9.7.2. One-Pass Dynamic Support in Burst-Prone Conditions -- 9.7.3. Ground Support Beneath Consolidated Sandfill Stopes -- 9.8. Case 7: Rock Support in the Garpenberg Mine -- 9.9. Case 8: Rock Support in the Craig Mine -- 9.10. Case 9: Rock Support in the Lucky Friday Mine -- 9.11. Case 10: Damage to Rock Support in Burst-Prone Conditions in an Australian Metal Mine -- 9.12. Case 11: A Successful Ground Support Subjected to a Seismic Event in an Australian metal Mine -- 9.13. Case 12: Damage to Rock Support in a Burst-Prone Rockmass -- 9.14. Case 13: Rock Support in an Underground Hydropower Cavern in Squeezing Rock -- 9.15. Case 14: Rock Support in a Large Scale Underground Sport Stadium -- References -- Appendix A: Parameters in the Tunneling Quality Index Q -- Reference -- Appendix B: The Rock Mass Rating (RMR) System -- Reference -- Index -- Back Cover.

Language: English