| Contents |
1. Research developments that contributed to the landscape of longwall roof support design over the past 25 years / Thomas M. Barczak -- 1.1. Introduction -- 1.2. The Mine Roof Simulator -- 1.3. Longwall Shield Supports -- 1.4. Standing Roof Supports -- 1.5. The Ground Reaction Curve -- 1.6. Closing Remarks -- 1.7. Disclaimer -- References -- 2. Study on the factors influencing the load capacity of shield / Jingyi Cheng and Syd S. Peng -- 2.1. Introduction -- 2.2. Research Method and Site Description -- 2.3. Effect of Setting Load on the Loading Characteristics of Shield -- 2.4. Yielding -- 2.5. Effect of Shearer's Cutting and Advance of Neighboring Shield on Shield Load -- 2.6. Conclusions -- Acknowledgments -- References -- 3. Structural engineering principles in coal mine ground control -- the common link between empirical models, numerical models, and practical solutions / Russell Frith -- 3.1. Introduction -- 3.2. Overview of Ground Control Assessment and Design Methods -- 3.3. Relevant Structural Engineering Principles -- 3.4. Examples of Rock Mass Behavior Conforming to Structural Engineering Principles -- 3.5. Discussion -- References -- 4. Rock failure above and below chain pillars: implications for strength and fluid flow between goafs / Winton J. Gale -- 4.1. Introduction and Background -- 4.2. Stress Changes and Rock Failure About Longwall Panels -- 4.3. Computer Modeling of the Process -- 4.4. Effects of Fracture Above Pillars on Hydraulic Conductivity -- 4.5. Conclusions -- References -- 5. Overburden response to longwall mining / Hua Guo, Qingdong Qu and Deepak Adhikary -- 5.1. Introduction -- 5.2. Stratified Rocks and Mechanical Characteristics -- 5.3. General Understanding of Overburden Response to Longwall Mining -- 5.4. Field Monitoring of Overburden Deformation Processes -- 5.5. Stress Changes and Distribution About Longwall Faces -- 5.6. Integrated Study of Hydrogeological Response to Longwall Mining -- 5.7. Significance of Overburden Response in Longwall Gas Emission -- 5.8. Future Trends in Overburden Response Study -- Acknowledgments -- References -- 6. Surface subsidence characteristics and damage protection techniques of high-intensity mining in China / Guo Wenbing, Bai Erhu and Yang Darning -- 6.1. Definition of High-Intensity Mining and Its Current Status -- 6.2. Surface Subsidence Characteristics Caused by High-Intensity Mining -- 6.3. Features of Overburden Rock Failure Due to High-Intensity Mining -- 6.4. Surface Subsidence Control and Mining Damage and Protection Technology of Buildings (Structures) in Chinese Coal Mines -- 6.5. Engineering Examples -- References -- 7. Ground control during pillar recovery with continuous miners / Christopher Mark -- 7.1. Introduction -- 7.2. Ground Control Theory of Pillar Recovery -- 7.3. Global Stability -- 7.4. Local Stability Risk Factors -- 7.5. Work Procedures and Worker Location -- 7.6. Rib Falls, Coal Bursts, and Airblasts -- 7.7. Conclusions -- References -- 8. Nondestructive testing of bolt support quality and stability control of coal mine roadways / Xie X. Miao, Hou Q. Zhang, Yu Wu and Yan L. Chen -- 8.1. Introduction -- 8.2. Mechanism and Equipment of Nondestructive Testing of Bolt Support Quality -- 8.3. Testing of Bolt Support Quality and Warning of Surrounding Rock Instability In Coal Mine Roadways -- 8.4. Conclusions -- References -- 9. Practical coal mine ground control -- operator's perspective / Daniel W.H. Su -- 9.1. Coal Pillar Design -- 9.2. Horizontal Stress Impact and Management -- 9.3. Longwall Caving and Hydraulic Fracturing -- 9.4. Roof Geology Reconnaissance and Applications -- 9.5. Deep Mine Design Considerations -- 9.6. Exploration and Mapping -- 9.7. Important Parameters Affecting Induced Stresses in the Sandstone and Abutment Pressures in the Gateroad Pillars -- 9.8. Design Changes Implemented to Reduce Longwall-Induced Stresses in the Sandstone and the Gateroad Pillars -- 9.9. Surface Seismic Monitoring -- 9.10. Effects of Longwall-Induced Subsurface Deformations on the Mechanical Integrity of Shale Gas Wells Drilled Over a Longwall Abutment Pillar -- 9.11. Site Description and Geotechnical Instrumentations -- 9.12. Site Geology -- 9.13. 3D Finite Element Simulations -- 9.14. Results of Geotechnical Instrumentation and 3D Finite Element Analyses -- 9.15. Potential of Employing the Field-Instrumentation-Calibrated Abaqus Model to Evaluate Well Casing Stability Under Different Overburden Geology and Well Casing Design -- 9.16. Discussions -- References -- 10. The use of cable bolts or ground control -- current applications and future innovation / Stephen C. Tadolini and Dennis R. Dolinar -- 10.1. Introduction -- 10.2. Cable Bolt Design and Manufacturing -- 10.3. Tensioned Cable Bolting Systems -- 10.4. Indented PC-Strand Cable Bolts -- 10.5. Summary and Conclusions -- Acknowledgment -- References -- 11. Rock failure process analysis method (RFPA) for modeling coal strata movement / Chun-an Tang and Tao Xu -- 11.1. Introduction -- 11.2. Rock Failure Process Analysis Method -- 11.3. Case Studies -- 11.4. Conclusions -- Acknowledgments -- References -- 12. Thick seam coal mining and its ground control / Jiachen Wang and Yang Li -- 12.1. Thick Seam Coal Mining -- 12.2. Ground Control in Thick Coal Seam Mining -- 12.3. Conclusions -- References -- 13. Experience in ground control evaluation of longwall recovery using numerical modeling and in situ monitoring / Peter Zhang -- 13.1. Conventional Longwall Recovery -- 13.2. Predriven Longwall Recovery Room -- 13.3. Numerical Modeling and In Situ Monitoring of Predriven Longwall Recovery Room -- 13.4. Shield Recovery in Using Predriven Recovery Room -- 13.5. Design Considerations of Roof Support in Using Predriven Recovery Room -- References. |
