Mining_Methods_UnderGround_Mining - Mining and Blasting
Mining_Methods_UnderGround_Mining - Mining and Blasting
Mining_Methods_UnderGround_Mining - Mining and Blasting
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Typical operating installation of the BorPak machine.<br />
rotational power to the drill string <strong>and</strong><br />
cutting components.<br />
Four types of main drive motor<br />
systems are available:<br />
AC, DC, hydraulic <strong>and</strong> VF. The gearbox<br />
mounts directly to the main drive motors,<br />
Robbins 73RM-VF set up in a workshop.<br />
employing a planetary reduction for its<br />
compactness. The hydraulic power unit<br />
is skid-mounted, <strong>and</strong> comprises the ne-<br />
cessary reservoir, motors, pumps, valves,<br />
filters <strong>and</strong> manifolds.<br />
The lubrication system ensures<br />
proper delivery of lubricating oil to the<br />
raiSe BOring<br />
high-speed bearings <strong>and</strong> other selected<br />
components of the drive train assembly<br />
gearbox, <strong>and</strong> comprises pump, motor,<br />
filter, heat exchanger, flow meter, <strong>and</strong><br />
reservoir with level gauge, thermometer<br />
<strong>and</strong> breather.<br />
The electrical system assembly consists<br />
of an enclosed cabinet containing<br />
the power <strong>and</strong> control distribution hardware<br />
<strong>and</strong> circuitry for the entire raise<br />
boring operation.<br />
The control console provides for both<br />
electrical <strong>and</strong> hydraulic functions, offe-<br />
ring meter readouts for main operating<br />
parameters.<br />
Computerization of the raise boring<br />
functions is also offered, using Atlas<br />
Copco’s well-tried PC based RCS<br />
system.<br />
acknowledgements<br />
This article has been prepared using<br />
The Raise Boring H<strong>and</strong>book, Second<br />
Edition, researched <strong>and</strong> compiled by<br />
Scott Antonich, as its main reference.<br />
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