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Terratec's new universal boxhole boring machine

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Tasmanian raise drill and tunnel boring machine manufacturer Terratec has added a new rig to its raise boring product range.

The Universal Boxhole Boring Machine, the UB1000, can boxhole sections up to 1.06 metres in diameter and 100 metres in length. It reams conventional raises nominally at 1.8 metres diameter and 200 metre depth.

The UB1000 comes with the derrick assembly, including the gearbox, which comes with floating drive box. It is ideal for a 10 in diameter by 48 in long drill string.

The gear box is conceived so it can be placed with the drive box pointing up for box holes, or down for conventional raising. The machine has a gearbox turning cradle that enables quick and easy index from box hole mode to raise-bore mode in less than one shift.

The integrated torque column/thrust cylinders offer balanced thrust and clear access from all sides. The rig can operate at up to a 45 degree dip, either side of centre-line, in a “cross-drift” orientation, with no need to turn the rig first, or alternation to switch from left hand to right hand dip.

No human access it needed at height with the powered overhead worktable doors, which has a combined powered wrenching system. It also comes with an extendable muck chute for boxholing, with a door to allow 1.06 metre diameter drill string components past.

It also comes with integrated ‘stinger’ cylinders and adjustable ‘spears’ to restrain vibration. The machine also has an all-purpose ground-loading rod handler, which handles all drilling consumables including the reamer and non-rotating stabilisers.

The sled-mounted crane/conveyor with integrated operator station moves the muck to a skip bin location beyond the pipe loading area, and allows easy positioning of the reamer, non-rotating stabilisers and other things around the drill.

Drill rod feed cassettes are given and each holds ten rods. The cassettes are designed to feed one rod at a time to the rod handler, or take on one rod at a time from the pipe loader when removing rods from the machine.

The feed cassette runs on the hydraulic power unit. The hydraulic power unit and electrical cabinet are installed on twin stackable sleds, with fire suspension fixed to both sleds

Full pressure and return filtration for each pump. It comes with a stainless steel operator control console with radio remote for certain functions. It also comes with ceramic-coated thrust cylinder rods for corrosion resistance.

The machine can be hauled via a radio-remote controlled transporter/erector crawler with 104kW diesel motor and hydraulic system plus fire suppression system.

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