Mine Project
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Transcript of Mine Project
Mine Project
2012/2013
Pretende-se:
1. Definição do nível adequado de produção 2. Método de desmonte (detalhado) 3. Desenvolvimento e traçagem do jazigo 4. Preparação do jazigo 5. Operações de furação, carga e transporte 6. Diagramas de fogo rampas ou galerias de rolagem e câmaras de desmonte.
Project must contain:
1. Adequate level of production (ton/year; m3/year; lifetime years) 2. Mining method 3. Primary and secondary underground development openings 4. Tertiary underground development openings 5. Drilling, loading and hauling operations description and calculations 6. Drilling patterns of a drift and a stope.
Data (surveys distance 500 x 500 metres – square mesh):
Avg. altitude 810 m
Ore deposit A
Survey Sab Footwall depth (m)
Thickness (m)
Avg. grade (%)
S00
S01
S02
S03
S04
S05
S06
S10
S11
S12 356 1 6.2
S13 346 1.5 6.1
S14 319 1 6.8
S15
S16
S20
S21 355 1.5 6.3
S22 353 1.2 6.6
S23 351 1.5 7.2
S24 343 2 7.1
S25 341 1.5 7.8
S26
S30
S31 368 2 8.0
S32 373 2.1 8.4
S33 374 2.2 8.2
S34 382 2.3 7.8
S35 388 0.8 8.0
S36
S40
S41 390 1 6.5
S42 394 2.2 7.4
S43 403 2.3 8.2
S44 403 2.2 7.5
S45 416 1.8 6.1
S46
S50
S51
S52 413 1.2 7.2
S53 414 1.5 6.5
S54 420 1 6.1
S55
S56
Table 1 – Mechanical properties obtained in laboratory
Table 2 – Values of the mechanical properties used in simulation for stability analysis of
Moinho Mine, Aljustrel, Portugal.
Fig 4.1 – Variation of recovery with pillar and stopes dimensions (Moinho Mine)
Fig 4.2 – Variation of safety factor with pillar (pilares) and stopes (camaras) dimensions
(Moinho Mine)