The repeatability is normally acceptable but it can be difficult to achieve good accuracy if the pile has a lot of peaks and valleys. The amount of guess work and number of measurements depends on how irregular the shape. Achieved Results The project is processed in less than an hour, including dense point cloud with mesh and texture and volume calculation reports. The volume of a pile is often calculated by taking several width and height measurements and recording the results on paper. The data includes 173 point s describing the surface of the pile. I am currently attempting to calculate an approximate measurement for the volume lost around the sides of the stockpile. The area of the stockpile was surveyed by using the conventional method with RTK GPS. Stockpile blending is always considered to be an effective method of controlling the quality and maintaining the grade consistency of delivered bulk material, such as iron ore. Start by looking at a single cone in a square base. There is lost volume on the top (from around the cones – see diagram) and around the sides of the stockpile in areas around the cones. Because of material does not naturally into a rectangular structure there will be lost volume. The angle of repose (the angle that the ore settles to the horizontal) of the ore is also known, as is the maximum stockpile height.Īn ‘ideal’ stockpile would have a flat top and sides.It is demonstrated in the attached diagrams that due to the nature of cone-ply stacking, this is not the case. The stockpile has a limited width and length. Therefore, 3’S can be used to measure a volume of stockpile. Generally, the volume differences between TLS, TS and GNSS RTK are not significant. The aim is to maximise the capacity of the stockpile, within a given space. the volume differences between GNSS RTK and TLS are -10.34 m3 (-0.63) and -9.05 m3 (-0.31) for the 1st location and the 2nd location respectively. I am in desperate need of some help with a materials handling problem which i am stumped on more specifically on calculating the volume of a stockpile that is built from a series of cones ('cone-ply')Ī cone-ply built stockpile is built with a series of cones (see diagram). On the other hand, UAV photogrammetry presents a fast, accurate method for mapping large areas and calculating stockpiles volumes.
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