Aerial surveys / Industry

Quarries

How it works

FlyA LiDAR or photo survey of the quarry, stockpile or dig.
CompareAgainst an earlier survey, or the original ground estimated from the quarry rim.
MeasureVolumes and tonnage, with a likely range for each figure.
ReportFigures, maps and terrain models for planning and stock checks.

What you get

Volumes and tonnageTonnage worked out from the rock type.
Likely rangeHow certain each figure is.
Cut and fill against planWhether extraction is on track or drifting.
Haul roadsGrades, potholes and where roads are breaking up.
Change between surveysWhere material has moved since last time.
Terrain modelA model of the ground from each survey.

A disused quarry

We measured how much rock was taken out over the quarry's working life, and the two stockpiles left behind. The original ground was estimated from the quarry rim.

Rock removed over the quarry’s working life: 890,000 m³
Likely range 2.51 to 2.72 million tonnes: 2.6 million t
The two stockpiles left behind: 1,400 + 110 m³
Absolute height accuracy (RMSE), checked against GNSS ground markers: 2.6 cm
Measured points per square metre: 1,000+
Ground heights meet RICS Band E (±50 mm): Band E

The likely range comes from a Monte Carlo analysis, which repeats the calculation many times with realistic measurement errors and rock densities.

Drone map of the disused quarry: a grey rock floor with tracks, ringed by trees and grass. — Drag the handle: the aerial map on the left, the height model on the right.

Terrain model of the same quarry, coloured by height: a deep blue floor with higher yellow and red rims. — Drag the handle: the aerial map on the left, the height model on the right.

Contour map of the same quarry, with 1 m contour lines over the height model. — 1 m contours over the height model.

Ask for a quote: mail@geoklein.com