Strata mechanics in coal mining

Cover......Page 1
Half Title......Page 2
Title Page......Page 4
Copyright Page......Page 5
Table of Contents......Page 6
Preface......Page 8
Symbols......Page 10
 1.1 Development of strata mechanics......Page 12
 1.2 Fundamentals of strata mechanics......Page 15
 1.3 Philosophy of strata mechanics......Page 20
 1.4 Rationalization of coal strata......Page 26
 2.1 Geology of coal strata......Page 32
 2.2 Sedimentology of coal strata......Page 38
 2.3 Anisotropy of coal strata......Page 50
 2.4 Tectogenesis of coal strata......Page 56
 3.1 Formation of coal......Page 70
 3.2 Petrography of coal......Page 77
 3.3 Coal rank......Page 85
 3.4 Cleats in coal......Page 94
 4.1 Weak roof strata......Page 108
 4.2 Competent roof strata......Page 117
 4.3 Structural defects of roof strata......Page 127
 4.4 Behaviour of subcoal strata......Page 136
 5.1 Geological stresses......Page 148
 5.2 Lateral tectonic stress......Page 156
 5.3 Stress state of soft coal seam......Page 168
 5.4 Hydrodynamic stresses......Page 174
 6.1 Coal and gas outbursts......Page 184
 6.2 Yielding fracturing of coal......Page 200
 6.3 Shear displacement of coal......Page 216
 6.4 Extrusion deformations......Page 229
 7.1 Principal mining systems......Page 244
 7.2 Stability of stope pillar structures......Page 255
 7.3 Strata mechanics......Page 272
 7.4 Caving mechanics......Page 293
 8.1 Longwall mining systems......Page 308
 8.2 Stability of panel-stope structures......Page 320
 8.3 Strata mechanics......Page 335
 8.4 Caving mechanics......Page 346
 9.1 Principal mining systems......Page 365
 9.2 Stability of slice-face structure......Page 378
 9.3 Strata mechanics......Page 389
 9.4 Caving mechanics......Page 404
 10.1 Principal mining systems......Page 415
 10.2 Stability of stope-pillar structure......Page 424
 10.3 Strata mechanics......Page 432
 10.4 Caving mechanics......Page 441
 11.1 Principal mining systems......Page 452
 11.2 Stability of stope-pillar structure......Page 464
 11.3 Strata mechanics......Page 473
 11.4 Caving mechanics......Page 491
 12.1 Mini coal pillars......Page 504
 12.2 Time dependent deformations of pillars......Page 515
 12.3 Strength of coal pillars......Page 532
 12.4 Protective pillars......Page 541
13. References......Page 559
Subject Index......Page 575