Using Terrestrial LiDAR As A Documentation Tool During Shaft Sinking

CIM Vancouver 2016
Mr Angus Errington (Research Engineer - Potash Corporation of Saskatchewan Inc.), Mrs Janelle Appleyard (Manager, Mine Development Engineering - Potash Corporation of Saskatchewan Inc.)
Terrestrial Light Detection and Ranging (LiDAR) instruments are seeing
increasing use in the mining industry. They provide accurate, high
resolution, spatial data and the option of overlaying colour
photographs on the spatial data points. However, conventional shaft construction
is a harsh environment and it has only been recently that Terrestrial
LiDAR instruments have begun to be used in conventional shaft
sinking. During sinking of the Potash Corporation of Saskatchewan
Inc.'s Scissor's Creek Shaft, in southeastern
Saskatchewan, the lower 500 metres were scanned after every blast.

This paper presents the processing procedure and the results of this
acquisition. Furthermore, it is shown
that the collection of LiDAR scans at every bench provides the
following benefits: a record of the excavation size (overbreak /
underbreak), accurate concrete volume prediction, accurate and high
resolution concrete thickness estimates. With the addition of
photos, visual documentation of what the pre-lined shaft looked
like at the time of sinking is provided. The information provided by the LiDAR
instrument is useful during sinking and over the course of the shaft's
life, especially if problems with the lining ever develop.
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