Versatile Boxhole Borer
Terratec has launched a new boring rig to
expand its raise boring product line. The
company’s UB1000 universal boxhole boring machine is designed to produce boxhole
sections up to 1.06-m diameter x 100-m
long and can also ream conventional raises
nominally 1.8-m diameter x 200-m deep.
Major components include the derrick
assembly, featuring a gearbox complete with
floating drive box (chuck) suitable for a 10-in. diameter x 48-in.-long drill string. The
gearbox is designed so it can be positioned
with the drive box pointing up for boxholes,
or down for conventional raising. The
machine is equipped with a gearbox turning
cradle able to quickly and easily index from
boxhole mode to raise-bore mode in less
than one shift. Integrated torque column/
thrust cylinders provide balanced thrust and
clear access from all sides. The unit is able
to operate at up to 45º dip, either side of the
center line, in a “cross-drift” orientation,
with no requirement to turn the rig first, or
any modifications to change from left hand
to right hand dip. Drill rod feed cassettes are
supplied and each holds 10 rods. The cassettes are mechanized to feed one rod at a
time to the rod handler, and accept one rod
at a time from the pipe loader when removing rods from the machine. The feed cassette is powered from the hydraulic power
unit. Machine mobility comes from a radioremote controlled transport/erector crawler
powered by a 104-kw diesel.
www.terratec.com
As featured in Womp 2013 Vol 12 - www.womp-int.com
