| In the mines underground
of Kamoto, the new method of exploitation by
"sublevel caving", offer a bigger
suppleness of exploitation, a big security and of
the advanced mechanization possibilities. If
shovels to the pot of 11 m³ and the skips of 100
tons are already since some times in service in
our careers, today of heavy contraptions on
caterpillars or on tires made their apparition in
our exploitations undergrounds. 
Jumbo drilling
machine
Auto-chargeuse
with pot of 150 liters.
|
The
exploitation of a layer by underground mine is
considered when the depth of the lodging
mineralized under the level of soil is in the
open as an exploitation is not profitable or rest
of the being, seen the importance of the works of
starting to agreeing. The methods of exploitation
in underground are chosen of factors as the heap
to exploit, the holding of the épontes, the
wealth of the minéralisation, the possibilities
to mechanize the exploitation, etc...
The Mine Prince Léopold in Kipushi
is our most former underground mine. She/it has a
capacity of extraction of 1.040.000 t of ores
currently per year. In 1969, the exploitation
descended below the level -700 meters. Important
works are undertaken, including the fonçage of a
new well in order to push this exploitation until
1.000 meters of depth, and later beyond. The main
method of exploitation used in Kipushi is the
"bip slicing" (slices thunderstruck
unidescendantes). In some yards, one uses the
"sublevel stoping" (cut down sublevel)
and the "shrinkage stoping" (room
stores). The underground mine of Kambove can be
considered like a pilot mine because one
finalized a new method of exploitation there by
"sublevel caving" (struck sublevel)
that replaced the "bip slicing" used in
the beginnings. She/it offers a bigger suppleness
of exploitation, a big security and of the
advanced mechanization possibilities. We used
there for example for the first time of the
contraptions on tires. The capacity of extraction
of the mine of Kambove will reach 1.200.000 tons
per year in 1972.
It is this same method that will be
applied in the new underground mine of Kamoto,
from 1970. This mine is going to continue the
exploitation of the layer when the career of main
Kamoto will have reached his/her/its depth limit
The mechanization of the yard
operations by autonomous contraptions of boring,
loading and transportation, already achieved for
a part of the preparatory works, will be there
complete at the time of the setting in
exploitation. The mine of Kamoto is joined to the
bottom of the career by two tilted road access
that will allow the first stage of the
exploitation to go back up in surface by means of
skips of 25 tons ores extracted in underground.
The capacity of extraction of the mine of Kamoto
will pass 3.000.000 tons of ores per year in
1976.
A Jumbo, drilling machine to
multiple foils, in a gallery of the mine of
Kamoto.
Concentration of ores continue ->>
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