DRILL & BLAST
D
ando Drilling International has been working with geotechnical contractor Bridgeway Consulting
to design a new drilling rig for awkward slope applications. Dubbed Ibex, the new machine is track mounted and is able to do dynamic sampling, SPT and rotary drilling on angles of up to 55°. To ascend, the cables are attached
from the outboard winch to a higher point up the hill using the ‘duck bill’ ground anchors. T ese stay in place when drilling. T e machine can then move forward until the exact destination is reached. A scissor mechanism can be used to close any gaps. T e track unit uses hydraulic rams to expand or contract from 1.5m wide to 2.1m to off er fl exibility when space is tight. A radio remote control system can be used, or a swing-out console with an illuminated digital blow counter is also fi tted. T e leveling system is the Sauer Danfoss Plus+1, and a longitudinal
compensating system can handle roll up to 15°. A hydraulically operated walkway provides access to the mast, sample storage boxes and a workbench. Power comes courtesy of a 36hp
Hatz silent pack diesel engine, providing 4189Nm of torque at 50rpm for larger diameter drilling, or up to 362rpm for open hole drilling or coring. Drill depth is up to 50m.
New four boom rigs T e China Coal Mine Construction Group Corporation (CCMCGC) in Hefei, Anhui province is taking delivery of dhms’s fi rst four boom all-hydraulic shaft drill rigs. dhms is claiming a number of improvements over conventional pneumatic or semi-hydraulic versions of this type of drill, such as increased drilling speed, quick changes between rotary or rotary percussive drilling modes and improved control. T e new design is also claimed to be quieter in operation, and not be prone to lubrication oil mist. One or two custom-built electro- hydraulic power packs on the
A FLUID SITUATION M
-I Swaco has released Screen Pulse, a new fl uids and cuttings separator. The company claims installation of the pneumatic device will recover up to 30bbl per day, with average cuttings waste reduced by 20%. Guy Arrington, president, M-I Swaco, says, “Combined with
The Crossover 183 is a new line of soil investigation rig that allows the driller/engineer to utilise both technologies in one machine
Michael Heimbach, COO, TMG
platform provide the power, all controlled wirelessly. When on undulating ground, the legs can be adjusted hydraulically. For transportation, the rig is designed to fold away like a giant
our shaker technology and lightweight composite screens, the new Screen Pulse separator maximises drilling fl uid recovery and generates drier cuttings. This reduces waste handling and disposal and overall drilling costs.” The system can operate up to four shakers at the same time. ●
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