Page 646 - Rock Mechanics For Underground Mining

INDEX

United States (USA) 395, 396, 434, 452, 463, Voussoir beam 227, 229, 230, 231–4, 235, 238 Williams Mine, Ontario, Canada 563–7, 564,
468, 484, 500, 501, 509, 510, 516, model 230 565, 567
554, 557 Wilson’s method 442, 554
Bureau of Mines 557 Waste 160, 354, 365, 366, 410, 435, 447, 449, Wire mesh 321, 338, 344
Michigan iron ore 487 454, 459–65, 483 reinforcement 321, 338, 344
Unloading 93, 96, 97, 131, 138, 228, 273, caved 365, 366, 454, 462, 464 Witwatersrand, South Africa 146, 496
277, 287, 303, 335, 526 dilution 459 Wombeyan marble 90, 91, 100
in compression testing 92–4, 96–7, 97 flow 459 Work-hardening 115
impulsive 287, 526 volume 459 Working height 384, 387, 388
Unravelling, rock 320, 321, 451, 487, 494 Water Workshop, design 265
Upper-hemisphere, projection 72, 245, 246 pressure forces 581 Wulff projection 72
see also Hemispherical table 490, 492, 493, 495, 496, 543 see also Stereographic
Urad Mine, Colorado, USA 468 see also Groundwater
USA see United States Waves Yield 85, 87, 130, 136, 235, 276, 299, 317,
USBM borehole deformation gauges 148 displacement spectrum 306, 307 327, 332, 334–5, 337, 374, 390, 406,
propagation of 277, 282, 283, 287, 523, 439, 441, 447–8, 452, 453, 463, 513,
Valisaari Orebody, Finland 426 533, 544 560, 564–5
Vector analysis 21, 24 elastic 277 criterion 105, 115–7, 317
Vector transformation 27 equations 282 plasticity theory 115
Veins 50, 57, 59, 60, 129, 145, 352, 354, 358, seismic 304–6, 556 see also Strength criterion
363, 420 shock 523 functions 116, 117
Velocity seismogram 307 tensile 524 load 335, 337, 422, 447–8
Ventilation 6, 11, 12, 199, 348, 353–5, 359, transmission of 279, 280, 533 locus 105
401, 403, 424, 441, 449, 469, 528 Wave velocity 139, 287, 289, 290, 305–7 point 115
circuits 354, 359, 424, 449 Wawersik & Fairhurst fracture study 95–7, zone 317, 337, 408, 441, 482
shafts 6, 12, 348, 403 103, 107, 297 Yielding arches 346
Vertical crater retreat (VCR) stoping see Weathering 6, 12, 48, 49, 58, 68, 87, 317, 353, Yielding props 363, 434
Stoping 495 Yoke gauge 554
Vibrating wire definition 6 Young’s modulus 36, 87, 89, 108, 138, 163,
sensors 546–7 index 68 233, 297, 331, 337, 424, 482, 520, 538
stressmeter 554–6, 555, 556 Wedge analysis 78
Vihanti Mine, Finland 426, 426 West Driefontein Mine, South Africa 50, Zambian copper belt 485, 487, 492
Virtual work theorem 187 486 Zinkgruvan Mine, Sweden 381
Viscoplastic flow 143, 160 Westerly Granite 105 Zone of influence, mining 3, 271, 370, 396,
Viscous damping 192, 194 Western Australia 345, 403, 464, 486 403
Void diffusion mechanism 458 Western Deep Levels Mine, South Africa 434 Zone of influence, cave 498–500

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