Page 635 - Rock Mechanics For Underground Mining

INDEX

UDEC 235, 236, 239, 240, 261, 438 East Rand Proprietary Mines, South Africa Engineers 11–13, 57, 485, 508
3DEC 506 49, 50, 433 Equal-angle projection 72, 74
Distinct element nodes 195–6 Eccentricity, ellipsoid of motion 227, 231, see also Stereographic
Doe Run Company, Missouri, USA 395, 395, 454–7, 459, 483 Equal-area projection 72, 74
396 Effective stress law 5, 104, 409 Equilibrium
Dolerite 49, 146 El Teniente Mine, Chile 50, 350, 473, 474, angle of friction 158, 164, 207–8
Dolomites 50, 67, 117, 486, 495–6 475, 497, 498–500, 499, 500 equations 21, 38, 169, 175, 235, 282
sinkholes 486 Elastic limiting 207, 256, 257, 258–60, 326, 327,
Dowels 313, 324, 338, 339, 340 behaviour 87, 139, 183, 208, 228, 515 329, 488, 489, 490, 492–5, 502, 504,
cable, and pre-reinforcement 324, compression 139 505, 580, 581
558 constants 36, 37, 87, 117, 136, 137, 141, nodal condition 189
grouted 329 511, 512 radial stress 220
reinforcing bar 313, 325, 326, 329, 330, modulus 36, 146, 513 static 25, 26, 28, 29, 34, 38, 41, 104, 158,
465, 553 -plastic performance 319, 353 256–8, 274, 375, 377
Split-set system 339, 465 properties, in situ dynamic 283 unstable 293, 294, 431
Swellex 339, 564 ratios 37 Erosion 67, 144, 146, 424
Downhole logging 69 shortening, arch 232, 233 Error defined 545
Drained conditions 5, 410 stiffnesses 35, 297, 511–2 Evaporites 92, 502, 506
Draw stress 166–78, 203–13 Examine 2D 383
cone 454, 458, 477 symmetry 35, 36 Excavation
control 458, 465, 469, 479, 481, 487, 495 wave propagation 277 aspect ratio 210
ellipsoids 460 plane waves 281–3 boundaries 198, 200, 204–17, 224–6, 242,
height 455 spherical and cylindrical 283, 521 243–63
interactive 458, 477 Elasticity 34–7, 166–78, 203–13 controlled 275
isolated 458, 477 anisotropic 35, 117 crown, and jointed rock 264, 265
rate 480 isotropic 35–6, 166–78, 203–13 damage 536, 537
system 476 matrix 35, 37, 116, 187 design 2, 9, 13–6, 197–9, 200, 200–20,
gravity draw 476 transverse isotropic 36–7 224–41, 242–70
load-haul-dump (LHD) 477 Elastoplastic analyses 115 blocky or jointed rock 17, 242–70
slusher system 476 Electrical resistance strain gauges 101, 546, dynamic 537
Drawpoint 325, 326, 361, 366–8, 458, 465, 548, 554 functional interactions and 9
473, 475–81, 518 Elliott Lake mines, Canada 391–5 massive elastic rock 197, 225, 317
reinforcement 325–6 Ellipsoid, flow 454, 455, 459 methodology 199, 437–9, 452
spacing 477, 478 End effects 90–2, 92, 100, 104 objective 271, 452
Drifts compression testing 100, 104 stratified rock 224, 225, 226, 229, 531
spacing 462, 463 End load distribution 231 displacement field 8, 17, 349, 351, 354–5,
stability 464 Energy 355
transport 255, 314 absorption 277, 437, 439, 564 dynamic performance of 536
Drill and fracture 96, 276 elliptical 176, 178, 203, 209, 212
and blast methods 313, 314 and mining method 355, 355 haunches 226
drifts 356 and rockbursts 299–304, 430–1, 437, 439 narrow, energy propagation 290
headings 6,197, 348 changes 271–7, 286–92, 300–4, 355, 435 operational constraints 9
Drillability 333 controlling rates 434–6 orienting 212, 265
Drilling determining 286 periphery 176, 190, 204, 213, 218, 259,
exploration 65, 67 dissipation 8, 146 264–6, 317–9, 329, 332, 439, 544
geotechnical 64–8 elastic strain 108, 192, 290, 351, 535 displacement 434–6
machine 65, 67 excess 275–7, 285–7, 289, 290, 292, 300 fracturing 200
rock behaviour and 5 explosive, in excavating 520, 540 stability 263
techniques and contracts 67 induced strain 276 stresses 204–16, 204–12, 217–21
see also Core logging instability concept 107, 110 prototype 543
Drives 6, 12, 13, 197, 348 kinetic 275, 303 438 rapid, and energy effects 275
Ductile mechanical relevance of 271 rectangular 444, 449, 475, 481, 490, 493
behaviour 103, 413 mining consequences of, rates 275 response, to seismic loading 536
deformation 86 partitioning 274 roof 259
Dykes 49, 50, 58, 69, 145, 302, 391, 430, 433, release 93, 275, 276, 285–92, 299–304, sequence 9, 198, 208
436, 488, 496, 497 302, 306, 417, 432–6, 435, 437–9 shape 173, 178, 198, 201, 209, 212, 213,
control of subsidence 488, 488 shock 519, 520 225, 265, 420
and rockbursts 302, 431, 433, 434 source, location 557 sidewalls 46, 250–1
Dynamic design 537 static strain 275, 276, 486, 300 span 46, 226, 230, 252, 264
Dynamites 519 storage 96, 108, 300, 351, 430 spherical cavity model 285, 287, 289, 290,
strain 2, 93, 96, 108, 272–6, 286–92, 521
Earthquakes 160, 302, 303, 308, 309, 431, 299–301, 351, 430–5, 535 square 252, 253
534, 535, 536, 537 transmission 277, 306, 520 sudden 275, 287

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