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25 de may. de 2023 · Sublevel shrinkage (SLSh) is an underground mining method similar to sublevel caving (SLC) but with continuous backfilling from the top. It features a top-down mining sequence with production drifts orientated in a longitudinal or transverse way in the orebody.
This measure is conceptually a useful way to assess productivity as it is relevant for all stages of the mine’s production cycle (ramp-up, steady state and ramp-down) and can be compared across operations of all sizes.
15 de ene. de 2016 · The ramp-up time for a project in mining and mineral industry is dependent upon a number of factors, including: Process complexity. Metallurgical sensitivity to processing parameters. Ore...
Download scientific diagram | Ramp-up, steady, and ramp-down regions from publication: Draw rate optimisation in block cave production scheduling using mathematical programming | Among...
30 de abr. de 2017 · Ramp-up-steady-ramp-down ... used in conjunction with internal rock stresses to fracture and break the rock mass into pieces that can be handled by miners. This method requires more detailed ...
1 de ene. de 2015 · open access. Abstract. Ramps (or declines) are often used in underground mines to transport ore, waste, materials, and personnel. This paper studies mine ramp productivity and presents results from a set of computer simulations designed to model the fundamental behaviours of ramp haulage systems.
Secondary Mining Method Longhole transverse. Information. Development of the ramp up to the desired elevation for the stope, top or bottom. Development of the access drift to the ore. Development of the lower and upper ore drifts. Once the development is completed, the panel is separated in sections of 21 m to 37 m (70 ft to 120 ft) long.
