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16-82 Edition 47
Hydraulic
Mining Shovels
Production Overviews
PRODUCTION OVERVIEWS
As with any other piece of material handling equip-
ment, the productivity of a hydraulic mining shovel
depends on various aspects. These influencing factors
are either defined by pure machine specifications, such
as bucket capacity, or by application conditions and
operator skills, like bucket fill factor and cycle time. In
addition, there are parameters, which fall neither under
the hydrauilc mining shovel’s physical capabilities, nor
can they be controlled by the shovel operator or the set-
up of the loading area. The major factors in this category
are truck exchange time and overall mine efficiency.
The following tables indicate, for a typical hydraulic
mining shovel/truck combination, the wide range of
productivity figures in t/h (tons/h) under various condi-
tions. The overall mine efficiency starts at 83%, which
corresponds to 50 minutes per hour. This efficiency is
generally achievable only during a short period of time,
and could be the relevant factor for a short time pro-
duction test. However, in the long-run, the overall mine
efficiency tends to be in the 65% to 75% range. The grey
highlighted area illustrates average productivity figures
which can be expected under typical site conditions in
well organized mines.
Furthermore, the size of the truck, and the required
number of passes to load it, has an effect on hydraulic
mining shovel productivity. The larger the truck, the higher
the hydraulic mining shovel’s productivity will be, because
unproductive truck exchange time will be reduced.
The figures in the following tables given in t/h (tons/h)
means the production per net loading hour and not per
service meter units [SMU].