Rock Mechanics.pdf - Mining and Blasting

More documents

Recommendations

Info

INDEX Stability 5, 9, 13, 92, 107, 109, 110, 243, 271, 293–9 criterion 295, 296, 397 excavation boundary 265 jointed rock 5, 78, 81, 85, 229, 242, 263–5, 409, 421, 423 index 297, 298, 299 mine 271, 293, 294, 296, 299, 392 roof bed 84, 241, 261 Stage testing 121 Stand up times 77, 80 Starfield and Pugliese procedure 522 Static equilibrium 25, 26, 28, 29, 34, 38,, 41, 104, 158, 256–8, 274, 375, 377 criterion 158 equations 21, 38, 169, 175, 235, 282 Steel arches 313, 346 cables 337 sets 313–5, 317, 320, 338, 346, 478, 544, 577 blocking 313, 320, 577 supports 346 Stereographic projections 71–6, 72, 73, 77, 83, 245, 246, 247, 250, 568–74 lower hemisphere 72, 157, 245, 246 see also Hemispherical projection Stereonets 72–4, 156, 158, 571 Sterling’s tests 227–9 Sticks 434 Stiffness 35, 49, 137, 257, 294–7, 298, 302, 315–7, 320–1, 335–6, 406, 434, 553–4, 564, 577–9 axial 335 effective 295 elastic/post-peak ratio 37 global matrix 188, 189, 295, 296 machine 92, 93 matrix 188, 189, 196, 295, 296 mine local 296, 297 normal 120, 129–31, 133, 191, 328 pillar 296, 297, 406, 407 shear 133, 137, 141, 191, 257, 328, 330 tendon 335 unloading 335 Stope access 197, 342, 347, 348, 398, 426 convergence 300–1, 402, 435–6, 447–8, 510–1 crown 265, 358, 361, 420, 421, 422, 559 fractures 420–2, 421 reinforcement 422 stress 175, 178, 420, 421 cut-and-fill see Cut-and-fill defined 347 design 13, 16, 58, 266, 348, 429, 470 development 69, 70, 347, 348, 360, 373, 398 see also Service openings drawpoints 13, 518 extraction sequence 9, 165, 301, 396, 397, 400–2, 403, 405, 417, 426, 429 filling 6, 417, 423 625 footwall 60, 203, 300, 363, 390, 391, 427, 436, 453, 506, 558–60, 563–5 hangingwall, failure 50 height/width ratio 420, 421 incremental extension 300 longwall 301, 364, 431, 434 ore recovery from 6, 13, 53, 65, 67, 357, 367, 459, 479 performance data 16 potential hazards 559 pre-production development 352, 356, 360, 361 reinforcement 427, 428, 436, 439, 440 shape 16, 265 sidewall, stress 175, 211, 420 span 267, 297, 300, 359, 384–6, 388, 392, 404, 406, 423, 436, 494 strain analysis 40, 404, 419 walls 266–70, 353, 354, 356–7, 361, 364, 401, 408, 420, 423–6, 428–9 Stope-and-pillar mining 13, 296, 371, 377, 384, 386, 394–7, 400–3, 405, 427 design/layout 296, 384, 386, 394–7, 400–3, 405, 427 irregular orebodies 396, 405 Mount Charlotte 403–5, 404 stress analysis 384, 396, 398, 432, 444 layouts 296, 384, 394, 396, 397, 401, 402 sequence 400–3, 402 Stoping bench-and-fill see Bench-and-fill breast 558 cut-and-fill see Cut-and-fill and drillability 353 geometry 362, 386, 387, 389, 408 layout 297, 348, 462 one-pass 12 open see Open stoping operations 348, 353, 361, 409, 416 backfill design 409, 416–8 transport facilities 353 overhand 419, 422 primary phase 424–5 rock mass response 17, 165, 166, 224–6, 349, 352, 355, 396, 399, 403, 405, 543 sequence 400–3, 402 shrink 365, 360–2, 423 and stress distribution 199–221, 267, 271, 277, 397–8, 401, 419–21, 420, 442–4 sublevel open 356, 357, 426 underhand 419, 421 vertical crater retreat (VCR) 361, 362 Strain analysis 40, 404, 419 axial 34, 88, 89, 92, 94, 95, 102–4, 103, 237 borehole wall 150–1 burst 431 cells 148, 149, 151, 153, 163, 554 compatibility equation 34, 37, 39, 40, 45, 167, 168, 173, 238 components 28, 31, 33–5, 39, 40, 45, 94, 150, 168, 171, 175, 184, 186, 281, 288, 522 spherical opening 285–9 defined 31 deviator 33 dynamic 425, 536 energy changes 272 and mining method 272 static 275, 276, 286, 300 gauges 101, 150, 151, 156, 227, 451, 546, 548, 551, 554, 555 geomechanics convention 17, 39, 41, 42, 43, 282 horizontal surface 249 increment 116, 194 localisation 96 matrix 32, 33, 38 normal 31, 33, 39, 40, 150, 156, 171, 281, 544 components 31, 33, 39, 150, 171 displacements components 30, 31, 32, 38–40, 110, 175, 183, 261 measurements 15, 554 plane 44, 110, 166–9, 171, 198, 230, 231, 233, 314, 315, 404, 405, 419, 512 plastic 115, 116 principal 33 radial 88, 95 shear 31, 33, 39, 45, 281, 373 tensile, horizontal 515 transformation 33 transient 281, 522 vector 34, 186 volumetric 33, 36, 39, 89, 96, 102, 103, 145, 284 Strain-displacement relation 40, 186, 281–2 Strain hardening 86, 115, 117 Strain-softening 86, 92, 94, 127, 193, 195, 294 Strata control 313, 440, 441 Stratiform deposits see Orebodies Strength anisotropic material 117–9, 118 compressive 78, 81, 87–92, 96, 97, 99–101, 106, 111, 113, 127, 129, 131, 135, 139, 140, 198, 214, 221, 234, 240, 267, 332, 383, 384, 395, 398, 408, 412, 413, 415, 421 measuring 157, 416 test procedure 3, 88, 92 uniaxial 214, 215, 336 criteria 81, 87, 105, 107, 111, 113, 117, 132, 134–7, 140, 141, 197, 198, 221, 322, 323, 381, 386, 463, 489, 490, 493, 513 peak 105, 107, 135, 136, 140 residual 105 index 68, 81, 82, 98, 322 peak 86, 87, 89, 91–4, 96, 97, 100, 102–5, 107, 109, 112, 113, 117, 118–22, 125, 129, 134, 135, 136, 139, 140, 317, 373, 398, 417, 426 envelope 100, 105, 107, 109, 112, 113, 121, 129, 135, 136, 139 pillar 373, 378–85, 392, 394–5
INDEX Strength (cont.) residual 86, 103, 105, 107, 122, 130 rock mass 80, 81, 87, 133–6, 137, 197–9, 212, 215–6, 322, 383, 489–95 shear 15, 47–9, 53, 54, 57, 81, 96, 105–7, 118–22, 124–32, 124–6, 134–6, 136, 303–4, 432, 489–90, 492, 581 and discontinuity persistence 54 envelope 121, 122, 124, 125, 135 tensile 5, 51, 107, 108, 130, 132, 135, 153, 198, 199, 204, 213, 214, 221, 222, 224, 242, 280, 339 triaxial 111, 215 see also Failure Stress analysis 40, 110, 165–7, 178, 179, 201, 204, 212, 225, 267, 283, 384, 396, 398, 432, 442, 444 boundary element method 179, 181, 183, 185, 195, 290, 295, 297, 301, 397, 431, 432, 513 differential method 179, 195 distinct element method 85, 130, 189–92, 322, 495, 513 finite element method 179, 183, 184, 187–9, 513 linked computational schemes 195, 299 photoelastic method 166 principles of classical 166 roof design 230, 235 tributary area method 15, 375–8, 381, 384, 385, 389, 390, 437–9, 452 axial 88–92, 94, 95, 96, 101–4, 139–41, 156, 274, 376–8, 386, 394 biaxial 26, 41, 99, 154, 170, 173, 174, 176, 180, 210, 214, 216, 276, 529, 555, 556 boundary 148–55, 175–8, 199–203, 209–15, 217, 289, 420, 525, 529–30 circular hole 148, 154, 163, 172, 173, 201, 207, 337 cut-and-fill stoping 265, 357–61, 409, 419, 421, 423 determining 45, 130, 143, 147–9, 151–3, 155, 157, 213 effect of curvature 178, 209–13, 420 excavation of irregular cross-section 212 sidewall 175, 211, 428 transmission 265 caving 467, 478 circumferential 148, 153, 209, 289, 290, 529 components 17–19, 21–9, 35–40, 42, 110–1, 142–6, 148–56, 158, 166–77, 181, 183, 204–8, 261, 282, 522, 529 equations 18, 19, 21, 22, 38 compressive 85, 108, 111, 126, 175, 225, 232, 240, 243, 267, 280, 321, 351, 397, 444, 524, 531 confining 4, 206, 221, 351, 382, 413, 423 definition 173 depth 143, 144, 155, 159, 162, 221, 391 deviator 25, 177, 215, 398 626 distribution, 25–6, 90, 100, 110, 160, 166–78, 176, 199–221, 202, 214, 218–9, 257, 262, 267, 271, 289, 290, 397–8, 401, 438, 443–4, 521, 525 circular excavation 173, 174, 175, 206–8, 214, 215, 260, 317, 337, 338 contiguous openings 202 in cut-and-fill stoping 357–61, 409, 419, 421, 423 elastic 152, 204, 205, 208, 214, 217, 218, 223, 255, 262, 419 elliptical excavation 176, 178, 203, 209, 212 and erosion 144–6 and mineralogical changes 145 in stress analysis 166–73, 209–13 drop 304, 311, 432 dynamic 276, 277, 279, 285, 287, 289 effective 5, 57, 104, 105, 121, 129, 135, 146, 158, 409, 489, 504 law 5, 104, 105, 129, 409, 489 elastic 113, 152, 204, 205, 207, 208, 214, 217, 218, 223, 225, 226, 257, 261, 262, 328, 329, 383, 398, 419, 463, 481 equilibrium, state of 293, 303 field 16, 111, 142, 146, 147–9, 150–60, 163, 167, 173, 175–8, 199, 201, 202, 204, 206, 207, 209, 211, 212, 218, 220, 221, 285, 288, 291, 367, 378, 384, 392, 420, 421, 423, 525, 530, 531, 575 heterogeneous 147 hydrostatic 175, 176, 201, 202, 207, 211, 218, 219, 285, 287, 289, 290, 314, 317, 319, 322, 323, 337 tensile 4, 524 in fractured rock 146, 160, 200, 213, 217–9, 221, 318, 320, 345, 420, 436, 439, 451, 537 frozen, method 166 geomechanics convention 17, 39, 41, 42, 43, 282 gradients 26, 92, 100, 146, 408 induced 2, 142, 153, 173, 184, 186, 267, 275, 276, 397, 450, 464, 465, 469, 475, 478, 506, 554, 559, 561 in situ 147, 148, 152, 156–9, 203, 313, 386, 430, 434, 441–4, 452, 454, 463–5, 474, 475, 481, 489, 493, 497, 511, 513, 530, 546, 558 determining 147–56 factors influencing 143–7 measurements 156, 158, 159 presentation of data 156–9, 157 invariant 23, 24, 28, 40, 44, 157, 166 limiting 106 longitudinal 233, 241, 279, 280 matrix 19, 20, 23–5, 44 deviator 25 spherical 25 measurements 15, 147, 148, 151, 153, 154–6, 158–60, 553, 559, 560 large opening 151–2 remote 547 multiaxial 99, 275 normal 17, 18, 23, 25, 39, 40, 42 measuring 553 overburden 146, 441–3 path 104, 105, 143, 198, 215, 398, 449, 452 peak 85, 90, 100, 109, 441, 482 polyaxial 99 post-excavation 147, 225 pre-mining 143, 201, 202, 209, 212, 221, 272, 376, 385, 401, 405, 440 principal 20, 23–5, 28–9 determining 23–5, 28, 142 deviator 25 difference 118, 119, 133, 166, 444 plots 157, 157, 166, 216, 216 radial 220, 286, 315, 318, 552 ratio 145, 160, 208, 211, 212, 267, 289, 383, 421 residual 145, 351 shear 17, 18, 23, 28, 38–42, 45 and discontinuity slip 271 in folding 48, 48 -shear displacement curves 122, 123, 126, 132 static 25, 175, 176, 201, 202, 207, 210, 211, 218, 219, 271, 273, 275, 277, 279, 285, 287, 289, 290, 299, 314, 319, 322, 323, 337, 525 and surface topography 143, 144, 161, 354, 500 tangential 154, 338, 465, 467, 468 tectonic 146 tensile 4, 5, 85, 90, 107, 108, 110, 153, 205, 213, 225, 242, 277, 280, 281, 397, 524, 526, 529, 546 and caving 85 in cut-and-fill stoping 420 and energy changes 271, 275, 286, 289, 290 and longitudinal waves 283 normal 17 pre-splitting 528–31 tensor 117, 142, 147, 148, 151, 156, 157, 159, 160, 554, 555 total, expression for 87, 105, 130, 174, 183, 184, 186, 187, 242, 285, 288 transformation 19, 20, 22, 27, 28, 45, 106, 149 equations 20, 22, 27, 28, 45, 106, 149 transient 271, 275, 521–3, 528, 529, 536 triaxial 99, 155, 163, 275 vector 18 vertical 143, 145, 159, 162, 217, 221, 328, 380, 383, 437, 441, 442, 443, 451, 464, 482, 483, 561 waves 276, 283, 286, 287, 289, 290, 425, 521, 523, 529–31 yield 87, 276 Stressmeters 546, 554–6, 555, 556, 561 vibrating wire 554–6, 555, 556 Stress–strain
Page 1 and 2:
Rock Mechanics
Page 3 and 4:
Rock Mechanics for underground mini
Page 5 and 6:
Contents Preface to the third editi
Page 7 and 8:
CONTENTS 9 Excavation design in blo
Page 9 and 10:
CONTENTS ix Appendix A Basic constr
Page 11 and 12:
PREFACE TO THE THIRD EDITION Mining
Page 13 and 14:
PREFACE TO THE SECOND EDITION In th
Page 15 and 16:
PREFACE TO THE FIRST EDITION design
Page 17 and 18:
ACKNOWLEDGEMENTS Safety in Mines Re
Page 19 and 20:
Figure 1.1 (a) Pre-mining condition
Page 21 and 22:
ROCK MECHANICS AND MINING ENGINEERI
Page 23 and 24:
Page 25 and 26:
Figure 1.4 Principal features of a
Page 27 and 28:
10 Figure 1.5 Definition of activit
Page 29 and 30:
Page 31 and 32:
Figure 1.7 Components and logic of
Page 33 and 34:
Page 35 and 36:
Figure 2.1 (a) A finite body subjec
Page 37 and 38:
Figure 2.2 Free-body diagram for es
Page 39 and 40:
STRESS AND INFINITESIMAL STRAIN As
Page 41 and 42:
STRESS AND INFINITESIMAL STRAIN In
Page 43 and 44:
Figure 2.3 Free-body diagram for de
Page 45 and 46:
Figure 2.5 Problem geometry for det
Page 47 and 48:
Figure 2.7 Rigid-body rotation of a
Page 49 and 50:
STRESS AND INFINITESIMAL STRAIN the
Page 51 and 52:
STRESS AND INFINITESIMAL STRAIN str
Page 53 and 54:
⎡ ⎢ ⎣ xx yy zz xy yz zx STRES
Page 55 and 56:
Figure 2.11 Cylindrical polar coord
Page 57 and 58:
STRESS AND INFINITESIMAL STRAIN fre
Page 59 and 60:
Figure 2.13 Construction of a Mohr
Page 61 and 62:
STRESS AND INFINITESIMAL STRAIN fun
Page 63 and 64:
3 Rock Figure 3.1 Sidewall failure
Page 65 and 66:
Figure 3.2 Jointing in a folded str
Page 67 and 68:
Figure 3.5 Diagrammatic longitudina
Page 69 and 70:
Figure 3.7 Discontinuity spacing hi
Page 71 and 72:
Figure 3.9 Illustration of persiste
Page 73 and 74:
Figure 3.11 Typical roughness profi
Page 75 and 76:
ROCK MASS STRUCTURE AND CHARACTERIS
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Figure 3.17 Sample number vs. preci
Page 83 and 84:
Figure 3.19 Diagrammatic illustrati
Page 85 and 86:
Page 87 and 88:
Figure 3.20 Computerised depiction
Page 89 and 90:
Figure 3.23 Stereographic projectio
Page 91 and 92:
Figure 3.26 Polar stereographic net
Page 93 and 94:
Figure 3.28 Contours of pole concen
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Figure 3.30 Geological Strength Ind
Page 101 and 102:
Page 103 and 104:
Figure 4.1 Idealised illustration o
Page 105 and 106:
ROCK STRENGTH AND DEFORMABILITY wit
Page 107 and 108:
Figure 4.4 Influence of end restrai
Page 109 and 110:
ROCK STRENGTH AND DEFORMABILITY whe
Page 111 and 112:
Figure 4.8 Principle of closed-loop
Page 113 and 114:
Figure 4.12 Two classes of stress-
Page 115 and 116:
Figure 4.14 Point load test apparat
Page 117 and 118:
Figure 4.15 Biaxial compression tes
Page 119 and 120:
Figure 4.18 Results of triaxial com
Page 121 and 122:
ROCK STRENGTH AND DEFORMABILITY was
Page 123 and 124:
Figure 4.23 Coulomb strength envelo
Page 125 and 126:
Figure 4.25 Extension of a preexist
Page 127 and 128:
Figure 4.29 The three basic modes o
Page 129 and 130:
Figure 4.30 Normalised peak strengt
Page 131 and 132:
ROCK STRENGTH AND DEFORMABILITY Tab
Page 133 and 134:
Figure 4.32 The normality condition
Page 135 and 136:
Figure 4.33 Variation of peak princ
Page 137 and 138:
Figure 4.35 Direct shear test confi
Page 139 and 140:
Figure 4.37 Shear stress-shear disp
Page 141 and 142:
Figure 4.40 Peak and residual effec
Page 143 and 144:
Figure 4.43 Effect of shearing dire
Page 145 and 146:
Figure 4.45 Relations between norma
Page 147 and 148:
Figure 4.47 Coulomb friction, linea
Page 149 and 150:
ROCK STRENGTH AND DEFORMABILITY whe
Page 151 and 152:
Figure 4.49 Composite peak strength
Page 153 and 154:
Figure 4.50 Hoek-Brown peak strengt
Page 155 and 156:
Figure 4.52 Determination of the Yo
Page 157 and 158:
ROCK STRENGTH AND DEFORMABILITY 4 A
Page 159 and 160:
5 Pre-mining Figure 5.1 Method of s
Page 161 and 162:
Figure 5.2 The effect of irregular
Page 163 and 164:
PRE-MINING STATE OF STRESS surround
Page 165 and 166:
PRE-MINING STATE OF STRESS induced
Page 167 and 168:
Figure 5.5 (a) Definition of hole l
Page 169 and 170:
Figure 5.6 (a) Core drilling a slot
Page 171 and 172:
Figure 5.7 Principles of stress mea
Page 173 and 174:
PRE-MINING STATE OF STRESS strength
Page 175 and 176:
PRE-MINING STATE OF STRESS A second
Page 177 and 178:
PRE-MINING STATE OF STRESS by the e
Page 179 and 180:
PRE-MINING STATE OF STRESS extend i
Page 181 and 182:
PRE-MINING STATE OF STRESS (d) Dete
Page 183 and 184:
METHODS OF STRESS ANALYSIS quantita
Page 185 and 186:
METHODS OF STRESS ANALYSIS It is in
Page 187 and 188:
Figure 6.2 A thick-walled cylinder
Page 189 and 190:
METHODS OF STRESS ANALYSIS For the
Page 191 and 192:
Figure 6.3 Problem geometry, coordi
Page 193 and 194:
Figure 6.4 Problem geometry, coordi
Page 195 and 196:
METHODS OF STRESS ANALYSIS When the
Page 197 and 198:
Figure 6.5 Superposition scheme dem
Page 199 and 200:
METHODS OF STRESS ANALYSIS The disc
Page 201 and 202:
Figure 6.7 Development of a finite
Page 203 and 204:
METHODS OF STRESS ANALYSIS Solution
Page 205 and 206:
Figure 6.8 A simple finite element
Page 207 and 208:
Figure 6.9 A schematic representati
Page 209 and 210:
METHODS OF STRESS ANALYSIS block ce
Page 211 and 212:
METHODS OF STRESS ANALYSIS where ˚
Page 213 and 214:
METHODS OF STRESS ANALYSIS The prin
Page 215 and 216:
EXCAVATION DESIGN IN MASSIVE ELASTI
Page 217 and 218:
Figure 7.2 A logical framework for
Page 219 and 220:
Figure 7.3 (a) Axisymmetric stress
Page 221 and 222:
Figure 7.6 A plane of weakness, ori
Page 223 and 224:
Figure 7.8 A flat-lying plane of we
Page 225 and 226:
Figure 7.10 Shear stress/normal str
Page 227 and 228:
Figure 7.12 Ovaloidal opening in a
Page 229 and 230:
Figure 7.15 States of stress at sel
Page 231 and 232:
Figure 7.16 Prediction of the exten
Page 233 and 234:
Figure 7.18 Contour plots of princi
Page 235 and 236:
Figure 7.19 Problem geometry for de
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
8 Excavation Figure 8.1 An excavati
Page 243 and 244:
EXCAVATION DESIGN IN STRATIFIED ROC
Page 245 and 246:
Figure 8.4 Experimental apparatus f
Page 247 and 248:
Figure 8.7 Free body diagrams and n
Page 249 and 250:
Figure 8.8 Assumed distributions of
Page 251 and 252:
Figure 8.9 Flow chart for the deter
Page 253 and 254:
Figure 8.10 Normalised arch thickne
Page 255 and 256:
EXCAVATION DESIGN IN STRATIFIED ROC
Page 257 and 258:
Figure 8.11 Normalised deflection a
Page 259 and 260:
9 Excavation Figure 9.1 Generation
Page 261 and 262:
Figure 9.3 (a) A finite, non-tapere
Page 263 and 264:
(a) (b) Figure 9.4 (a) Vertical cro
Page 265 and 266:
(a) (b) (c) EP EP Reference circle
Page 267 and 268:
Figure 9.10 JP 100 is the only JP w
Page 269 and 270:
Figure 9.12 Traces of the views of
Page 271 and 272:
EXCAVATION DESIGN IN BLOCKY ROCK In
Page 273 and 274:
Figure 9.14 Free-body diagrams of a
Page 275 and 276:
EXCAVATION DESIGN IN BLOCKY ROCK di
Page 277 and 278:
Figure 9.16 Symmetrical wedge in th
Page 279 and 280:
Figure 9.17 (a) Geometry for determ
Page 281 and 282:
Figure 9.18 Problem geometry demons
Page 283 and 284:
Figure 9.20 Cut-and-fill stope mine
Page 285 and 286:
Figure 9.22 Chart to determine fact
Page 287 and 288:
EXCAVATION DESIGN IN BLOCKY ROCK Th
Page 289 and 290:
Figure 10.1 (a) Pre-mining state of
Page 291 and 292:
Figure 10.3 (a) Dynamic loading of
Page 293 and 294:
Figure 10.5 (a) Pre-mining and (b)
Page 295 and 296:
Figure 10.6 Problem definition and
Page 297 and 298:
ENERGY, MINE STABILITY, MINE SEISMI
Page 299 and 300:
Figure 10.9 Force and stress compon
Page 301 and 302:
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Figure 10.12 Distribution of radial
Page 309 and 310:
Figure 10.15 Problem geometry for d
Page 311 and 312:
Figure 10.17 (a) Schematic represen
Page 313 and 314:
Page 315 and 316:
Figure 10.20 Elastic/post-peak stif
Page 317 and 318:
Page 319 and 320:
Figure 10.24 Relation between frequ
Page 321 and 322:
Page 323 and 324:
Page 325 and 326:
Figure 10.28 Six possible ways that
Page 327 and 328:
Figure 10.29 First motions for P an
Page 329 and 330:
11Rock support and reinforcement 11
Page 331 and 332:
Figure 11.1 (a) Hypothetical exampl
Page 333 and 334:
Figure 11.4 Non-linear support reac
Page 335 and 336:
Figure 11.5 Idealised elastic-britt
Page 337 and 338:
Figure 11.6 Calculated required sup
Page 339 and 340:
ROCK SUPPORT AND REINFORCEMENT The
Page 341 and 342:
Figure 11.9 Ground reaction curves
Page 343 and 344:
Figure 11.12 Use of grouted reinfor
Page 345 and 346:
ROCK SUPPORT AND REINFORCEMENT If,
Page 347 and 348:
Figure 11.16 Local reinforcement ac
Page 349 and 350:
Figure 11.18 Typical working sketch
Page 351 and 352:
Figure 11.19 Permanent support and
Page 353 and 354:
Figure 11.22 Basis of natural coord
Page 355 and 356:
Figure 11.24 Distributions of (a) s
Page 357 and 358:
Figure 11.26 Resin grouted rockbolt
Page 359 and 360:
Figure 11.28 Alternative methods of
Page 361 and 362:
ROCK SUPPORT AND REINFORCEMENT Tabl
Page 363 and 364:
Figure 11.31 Toussaint-Heintzmann y
Page 365 and 366:
MINING METHODS AND METHOD SELECTION
Page 367 and 368:
Figure 12.2 Elements of a supported
Page 369 and 370:
Page 371 and 372:
Page 373 and 374:
Page 375 and 376:
Figure 12.6 Schematic layout for bi
Page 377 and 378:
Figure 12.8 Layout for shrink stopi
Page 379 and 380:
Figure 12.9 Schematic layout for VC
Page 381 and 382:
Figure 12.11 Key elements of longwa
Page 383 and 384:
Figure 12.13 Mining layout for tran
Page 385 and 386:
Page 387 and 388:
13 Figure 13.1 Schematic illustrati
Page 389 and 390:
Figure 13.3 Layout of barrier pilla
Page 391 and 392:
Figure 13.5 Principal modes of defo
Page 393 and 394:
Figure 13.8 Geometry for tributary
Page 395 and 396:
PILLAR SUPPORTED MINING METHODS str
Page 397 and 398:
Figure 13.10 Distribution of vertic
Page 399 and 400:
Figure 13.12 Pillar behaviour domai
Page 401 and 402:
PILLAR SUPPORTED MINING METHODS Lun
Page 403 and 404:
Figure 13.15 Options in the design
Page 405 and 406:
Figure 13.17 Relation between yield
Page 407 and 408:
Figure 13.19 Model of yield of coun
Page 409 and 410:
Figure 13.20 North-south vertical c
Page 411 and 412:
Figure 13.23 Stope-and-pillar layou
Page 413 and 414:
Figure 13.25 Calibrated stability c
Page 415 and 416:
PILLAR SUPPORTED MINING METHODS wor
Page 417 and 418:
Figure 13.28 Pillar performance, de
Page 419 and 420:
Figure 13.29 (a) Stope and pillar l
Page 421 and 422:
Figure 13.31 (a) Plane strain analy
Page 423 and 424:
PILLAR SUPPORTED MINING METHODS Pan
Page 425 and 426:
14 Artificially supported mining me
Page 427 and 428:
ARTIFICIALLY SUPPORTED MINING METHO
Page 429 and 430:
Page 431 and 432:
Figure 14.2 Simplified view of stru
Page 433 and 434:
Page 435 and 436:
Figure 14.5 Confined block model fo
Page 437 and 438:
Figure 14.7 Crown and sidewall stre
Page 439 and 440:
Page 441 and 442:
Page 443 and 444:
Figure 14.10 Sublevel open stoping
Page 445 and 446:
Figure 14.12 Some applications of c
Page 447 and 448:
15 Longwall and caving mining metho
Page 449 and 450:
Figure 15.2 Shear stress drop in th
Page 451 and 452:
LONGWALL AND CAVING MINING METHODS
Page 453 and 454:
Page 455 and 456:
Figure 15.6 Hydraulic prop reaction
Page 457 and 458:
Figure 15.7 Development and extract
Page 459 and 460:
Figure 15.8 Vertical stress redistr
Page 461 and 462:
Figure 15.11 Distribution of observ
Page 463 and 464:
Figure 15.13 Plan view of microseis
Page 465 and 466:
Figure 15.16 Ground-support interac
Page 467 and 468:
Figure 15.18 Roadway support and re
Page 469 and 470:
Page 471 and 472:
Page 473 and 474:
Page 475 and 476:
Figure 15.25 Comparison of isolated
Page 477 and 478:
Figure 15.26 Geometry of a sublevel
Page 479 and 480:
Figure 15.28 Theoretical determinat
Page 481 and 482:
Figure 15.31 Deterioration of a cro
Page 483 and 484:
Figure 15.32 Distinct element simul
Page 485 and 486:
Page 487 and 488:
Figure 15.34 Extended Mathews stabi
Page 489 and 490:
Figure 15.36 Comparison of postand
Page 491 and 492:
Page 493 and 494:
Figure 15.39 Idealised plan illustr
Page 495 and 496:
Figure 15.41 Idealised vertical sec
Page 497 and 498:
Figure 15.42 Vertical slice through
Page 499 and 500:
Page 501 and 502:
16 Figure 16.1 Trough subsidence ov
Page 503 and 504:
MINING-INDUCED SURFACE SUBSIDENCE c
Page 505 and 506:
Figure 16.4 North-south section, At
Page 507 and 508:
Figure 16.6 (a) Rectangular block g
Page 509 and 510:
MINING-INDUCED SURFACE SUBSIDENCE f
Page 511 and 512:
Figure 16.8 Relation between stope
Page 513 and 514:
MINING-INDUCED SURFACE SUBSIDENCE M
Page 515 and 516:
MINING-INDUCED SURFACE SUBSIDENCE
Page 517 and 518:
Figure 16.14 Chart developed to est
Page 519 and 520:
Figure 16.16 Progressive hangingwal
Page 521 and 522:
Figure 16.19 Idealised model used i
Page 523 and 524:
Figure 16.21 Longitudinal section,
Page 525 and 526:
MINING-INDUCED SURFACE SUBSIDENCE t
Page 527 and 528:
MINING-INDUCED SURFACE SUBSIDENCE w
Page 529 and 530:
MINING-INDUCED SURFACE SUBSIDENCE F
Page 531 and 532:
Figure 16.25 Subsidence troughs pre
Page 533 and 534:
Figure 16.28 Predicted and measured
Page 535 and 536:
17 Blasting mechanics 17.1 Blasting
Page 537 and 538:
Figure 17.1 An empirical matching o
Page 539 and 540:
Figure 17.2 A finite difference mod
Page 541 and 542:
Figure 17.4 Reflection of a cylindr
Page 543 and 544:
BLASTING MECHANICS means that no ci
Page 545 and 546:
Figure 17.8 Layout of blast holes i
Page 547 and 548:
Figure 17.9 Influence of field stat
Page 549 and 550:
Figure 17.11 Generation of surface
Page 551 and 552:
BLASTING MECHANICS The components o
Page 553 and 554:
BLASTING MECHANICS amplitudes of th
Page 555 and 556:
BLASTING MECHANICS 17.9 Evaluation
Page 557 and 558:
Figure 17.15 (a) Schematic cross se
Page 559 and 560:
BLASTING MECHANICS in Figure 17.17,
Page 561 and 562:
MONITORING ROCK MASS PERFORMANCE (a
Page 563 and 564:
MONITORING ROCK MASS PERFORMANCE su
Page 565 and 566:
MONITORING ROCK MASS PERFORMANCE Ta
Page 567 and 568:
Figure 18.2 The Distometer ISETH, a
Page 569 and 570:
Figure 18.5 Self-inductance multipl
Page 571 and 572:
MONITORING ROCK MASS PERFORMANCE is
Page 573 and 574:
Figure 18.9 Biaxial vibrating wire
Page 575 and 576:
MONITORING ROCK MASS PERFORMANCE me
Page 577 and 578:
Figure 18.12 Cross section at 6650N
Page 579 and 580:
Figure 18.13 Examples of convergenc
Page 581 and 582:
Figure 18.15 Longitudinal section l
Page 583 and 584:
Figure 18.16 (Cont.) MONITORING ROC
Page 585 and 586:
Appendix A Basic constructions usin
Page 587 and 588:
Figure A.3 Determining the angle be
Page 589 and 590:
APPENDIX A USE OF HEMISPHERICAL PRO
Page 591 and 592: APPENDIX B STRESSES AND DISPLACEMEN
Page 593 and 594: Figure A.6 Axisymmetric tunnel prob
Page 595 and 596: Figure A.9 Bolt load-extension curv
Page 597 and 598: APPENDIX D LIMITING EQUILIBRIUM ANA
Page 603 and 604: ANSWERS TO PROBLEMS 2 (a) 0.087 - 0
Page 605 and 606: ANSWERS TO PROBLEMS 3 wp = 38.6 m,
Page 607 and 608: REFERENCES Symp. & 17th Tunn. Assn
Page 609 and 610: REFERENCES Brady, B. H. G. and Bray
Page 611 and 612: REFERENCES Collier, P. A. (1993) De
Page 613 and 614: REFERENCES Drescher, A. and Vardoul
Page 615 and 616: REFERENCES Gustafsson, P. (1998) Wa
Page 617 and 618: REFERENCES Hood, M. and Brown, E. T
Page 619 and 620: REFERENCES Kaiser, P. K. and Tannan
Page 621 and 622: REFERENCES Lorig, L. J. and Brady,
Page 623 and 624: REFERENCES Ortlepp, W. D. (1994) Gr
Page 625 and 626: REFERENCES Rojas, E., Molina, R. an
Page 627 and 628: REFERENCES Spottiswoode, S. M. and
Page 629 and 630: REFERENCES Villaescusa, E., Windsor
Page 631 and 632: Index Page numbers appearing in bol
Page 633 and 634: INDEX Coulomb (cont.) parameters 96
Page 635 and 636: INDEX Excavation (cont.) support ra
Page 637 and 638: INDEX Jaeger’s plane of weakness
Page 639 and 640: INDEX Panel caving 470-2, 473, 474,
Page 641: INDEX Seismic (cont.) moment 306, 3
Page 645: INDEX United States (USA) 395, 396,
show all

Rock Mechanics.pdf - Mining and Blasting

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?