ALIGNMENT SYSTEM FOR ALIGNMENT OF A DRILL ROD DURING DRILLING

摘要

A laser alignment device for a drill rig having an elongate drill rod, the laser alignment device including a head unit having at least a pair of laser emitting devices mounted independently to one another thereon, each of the laser devices movable in one plane only and oriented in substantially opposite directions to one another, an attachment means to attach the head unit to a drill rig and a length adjustable assembly to adjust the separation distance between the head unit and the drill rod, wherein the alignment device is used to align at least the azimuth of the drill rod relative to survey marks.

主权项

1. An alignment system for alignment of a drill rod during drilling of a hole including:
i. at least one laser device mounted relative to a drill rig to issue at least one laser emission, wherein the laser device is directed laterally or radially, and ii. at least one detector device to detect at least one laser emission,
whereby the at least one laser emission is used to determine the position of the drill rod in relation to the centre of the partially drilled hole whilst the drill rod is in the partially drilled hole.