Laser Scanning Disused Quarry
The client request was simple, “can you provide us with a contour model of our site in Guildford”, the challenge was that the site was a sheer sided disused 25m deep chalk quarry. Health and Safety considerations meant that the quarry sides or base could not be accessed by the survey team to take measurements. The solution was to undertake the survey using a Riegl Laser Scanner with a Nikon digital camera mounted on top. The scanner records up to 122,000 points per second and has a range of 600m whilst being able to achieve a 3mm accuracy.
The Laser Scanning Survey was undertaken in half a day on site, a point cloud was then produced and a contour model derived from that.
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