productive, repeatable and accurate method of mining
capability.
The design also focused on the roof support and
consumables materials handling system. The roof and rib
bolters come with a high degree of automation, operated
via microprocessor control technology, minimising the
need for operator intervention throughout the roof
support installation process.
The system has the intelligence to both drill and install
roof supports at maximum rig feed and drill rotation
performance levels, while taking into account variations
in strata hardness and geotechnical conditions.
The roof support system includes a user-friendly
operator interface that caters to varying lengths of roof
and rib bolts, fibreglass rib dowels, spin-to-stall resin
applications and a range of mega bolt specifications.
The product design team prioritised increasing safety,
productivity, reliability and minimising life cycle cost.
The development team focused on the hydraulic
design, including the application of hard piping, and this
resulted in a 26% reduction in hydraulic hoses. The team
also incorporated a single centralised hydraulic control
manifold for ease of maintenance at the rear of the
machine.
A team of operators were selected to trial the 12ED25s
at Anglo’s Moranbah North mine, testing its capabilities
before introduction at the Grosvenor mine. They were
supported by Joy Global’s JoySmart Solutions team,
which provided on-the-job training, onsite technical
support and round-the-clock reviews of performance
diagnostics.
“While there is always resistance to new technologies,
I was very impressed with how well the operators
adapted to using the electro-hydraulic push buttons
rather than levers and how quickly they embraced the
use of automation,” said Jordan Taylor, Moranbah Mine
Superintendent. “By relying on automation, we were
confident that every bolt was consistently installed to the
same standard. Within a short period of time, the 12ED25
was setting and breaking its own production records on a
weekly basis.”
The crews set records for the 12ED25, including the
best shift production of 42 m advance and the best day’s
production of 78 m advance.
Following the successful trial at Moranbah North, two
12ED25s were introduced at the Grosvenor mine in
March 2015. The same production crews were used,
allowing the mine to ramp up to full production within
the first ten days of operation.
Within a short period of operation at the Grosvenor
mine, the 12ED25 eclipsed the performance records set at
Moranbah, achieving 53 m advance in a single shift at a
rate of 6.5 m per operating hour.
“We are very pleased with the 12ED25s,” Britton said,
“both from a mining productivity performance and a
machine reliability perspective. The 12ED25 has shown,
in a relatively short time frame, it has the potential to
outperform the current generation of bolter miners.”
Connecting Global Competence
What technologies and innovations will define,
change and revolutionize the global mining
industry in the future? Find out at bauma 2016.
You can expect:
700 exhibitors with mining products
Halls B2, C2 and C3 and the bauma Forum all
focus on mining
605,000 m
2
of total exhibition space with plenty
of other products and components for mining
Unearth the
innovation potential.
Secure your ticket
now at:
31st Edition of the World’s Leading
Trade Fair for Construction Machinery,
Building Material Machines, Mining
Machines, Construction Vehicles and
Construction Equipment
April 11–17, Munich
bauma Official
