Terex SHM - Surface and Highwall Mining Video - Metric Version
This coal mining video features the Terex SHM Highwall Miner, the most
efficient highwall mining system available for extracting clean coal in today’s
mining industry. This specialized highwall miner links surface coal
mining and underground coal mining operational benefits, maximizing coal recovery
and profits.
Shot entirely in high definition, this highwall mining video illustrates many
of the competitive advantages that make the Terex SHM Highwall Miner one of the most advanced and innovative mining equipment systems in the world. Technological
innovations such as the enclosed pushbeams, the gamma detector, an
array of cutterheads, the right angle coal conveyor, the remote
highwall miner control system, the mobile generator, and the Seimen's
Step 7 PLC controller with a touch screen monitor have made the Terex
SHM miner the obvious solution for any highwall mining operation.
Combine those features with Terex SHM's 24 hour, seven day a week
customer service and you have the most efficient and profitable surface
mining system on the market.
Terex SHM is also the first practical surface mining system that can
mine parallel entries to predetermined depths. Like auger mining
systems, the Terex SHM works before a highwall. However,
unlike auger mining systems, the Terex SHM mines parallel entries,
rectangular in section and up to 1000 feet or 305 meters deep.
This superior surface mining system yields the following benefits:
High Annual Capacity
Lower per ton Reclamation Costs
Higher Coal Recovery
Lower Total Coal Production Costs
Minimal out of Seam Ash Dilution
This highwall mining video highlights the Terex SHM Highwall Miner in action.
When preparing to mine, the mobile Terex SHM Highwall Miner is
aligned perpendicular to the coal face exposed by the surface mining
operation. As mining begins, the coal is cut by a specially designed
electric cutterhead module, of which several modules are available to
match the seam conditions. The cutterhead is attached to the powerhead
assembly located in the
center of the machine. Here, two hydraulically powered sump
cylinders, with a twenty-foot stroke, push the powerhead forward as
they provide up to 380,000 pounds of force. Cutterhead modules are
available with 24" to 44" diameter cylindrical drums, containing
carbide-cutting bits. The bits rotate breaking the coal out of the
seam. As the coal falls, it is gathered in a pan that uses two
mechanical loading arms to assist in gathering the coal and propel it
to the rear of the pan where it is picked up by a chain conveyor.
As the cutting cycle continues, the cutterhead is progressively
pushed into the coal seam for 20 feet. Then, the hydraulically powered
mechanical table or Pushbeam Transfer Mechanism (PTM) automatically
inserts a 20-foot long rectangular pushbeam into the center section of
the machine between the powerhead and the cutterhead.
Coal is then
transported from the cutterhead through the pushbeam and into the powerhead and
vertical auger for discharge from the belt conveyor. At maximum penetration, the
process is reversed as the powerhead is retracted pulling the string of
pushbeams and cutterhead out of the mined hole. Pushbeams are removed at
20-foot intervals and can be stacked to minimize site requirements.
The Terex SHM coal mining process leaves a series of rectangular shaped
holes up to 12 feet wide and as high as the coal seam and up to 1,000
feet deep. This high definition coal mining video will not only
demonstrate the
pushbeam process, but it will also emphasize the ease of use for each
four-man crew.
Additionally illustrated by this mining video is the gamma detector. The Gamma Detector measures increasing radiation as the cutter nears the radioactive rock.
With the Gamma Detector assisting the operator, rock and other debris can be left underground resulting in cleaner coal.
The Gamma detector is enclosed inside rugged armor that is mounted on the front of the cutterboom to view behind the cutterdrum.
It is easily installed on cutter modules already in service. The Gamma
Detector readout is incorporated into the existing mine page on the PLC Touchscreen .
Utilizing evolved coal mining technology, the highwall miner control center consists of a Siemen’s Step 7 computerized PLC controller
with a monitor and touch pad, which allows the operator to bring up any
of a series of screens on the monitor. This computer is also highlighted in the Terex SHM mining video. Using the touch pad, the
operator may adjust virtually any function on the highwall miner. The onboard Siemen’s PLC continuously monitors machine operation and
will display and direct the operator to any potential system failures.
Of special safety importance is the methane-sensing monitor, which
reads methane levels, if any, around the cutterhead. This
monitor will automatically cut off all power to the cutterhead in the
event that methane levels are detected at ignitable levels.
This proven mining technology is just one of the many reasons why Terex SHM Highwall Miners are at the forefront of highwall mining technology today.
The Terex SHM Highwall Miner is powered from either highline power with a remote substation or a portable electric generator system.
The mobile generator is a super silenced 16 cylinder, diesel, 995-volt
system, housed in a 20 foot, track mounted, enclosed container located
in proximity to the machine. Electric power is introduced into the machine through the Electric
Control Module (ECM) located below the operator cabin; 995, 480, 220
and, 110 volts are available throughout the machine.
Explore the Terex SHM video and discover why this highwall mining system is revolutionizing the surface coal mining industry.
