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MODERN OPEN PITS_proof 21/10/2015 10:06 Page 4

MODERN OPEN PITS
the system was able to
pick up several moving
areas. A moving area
involving three benches
was detected below the
main crusher. The
movement was closely
monitored over the
following weeks,
revealing a connection
with heavy rainfall that
occurred during the
period.
On October 1, IBIS
Visual information from the Eagle-Vision Camera
was able to track a rapid bench-scale failure on
directly linked to the IBIS’s displacement map,
an almost vertical wall. The movement was
at Ok Tedi mine
characterised by a rapid acceleration with just a
view both fast movements of slopes to very slow
few millimetres of deformation before the failure.
movements, which themselves can be very useful
With a single scan the IBIS radar covers more
to support mine planning and geotechnical
than 40% of the pit walls from its scanning
analysis in risk hazard mitigation.”
position on the edge of pit away from blasting
In September 2014, an IBIS-FM unit was
and working areas. The radar provides
deployed at the Eurochem Kovdor Zhelezny
information which is refreshed every three
apatite/ magnetite mine in the Murmansk region
minutes over the entire area. The use of IBIS
of Russia. The IBIS radar was selected by the
radar represents a technological innovation for
mine specialists “thanks to its unique
Russian mining, and it has already successfully
performance and the capability to guarantee
passed the test of the extreme Russian winter.
reliable data even under extreme weather
Alexander Vinogradov, Chief Surveyor of
conditions” such as ice, fog, snow and freezing
Kovdorskiy GOK says: “The system is intended to
temperatures.
alert the staff in case of emergency situations. A
Shortly after the commissioning of the radar,
developing deformation can be detected early
enough to timely alert
operations and evacuate
personnel and
equipment from the
hazardous area. This is
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data in support of
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investigations.



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46 International Mining | NOVEMBER 2015


 


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