Abstract
The following paper aims to test and evaluate the accuracy of UAV data for volumetric measurements to the conventional GNSS techniques. For this purpose, an appropriate open pit quarry has been chosen. Two sets of measurements were performed. Firstly, a stockpile was measured by GNSS technologies and later other terrestrial GNSS measurements for modelling the berms of the quarry were taken. Secondly, the area of the whole quarry including the stockpile site was mapped by a UAV flight. Having considered how dynamic our world is, new techniques and methods should be presented in numerous fields. For instance, the management of an open pit quarry requires gaining, processing and storing a large amount of information which is constantly changing with time. Fast and precise acquisition of measurements regarding the process taking place in a quarry is the key to an effective and stable maintenance. In other words, this means getting an objective evaluations of the processes, using up-to-date technologies and reliable accuracy of the results. Often legislations concerning mine engineering state that the volumetric calculations are to present ±3% accuracy of the whole amount. On one hand, extremely precise measurements could be performed by GNSS technologies, however, it could be really time consuming. On the other hand, UAV photogrammetry presents a fast, accurate method for mapping large areas and calculating stockpiles volumes. The study case was performed as a part of a master thesis.
Highlights
UAV photogrammetry has recently increased its popularity among numerous engineering spheres
By photogrammetric techniques, large areas can be covered in high details in less than an hour. (Patikova, 2004) In comparison to classical geodetic methods, close range photogrammetry is an efficient and fast method
The presentation of the surface on the other hand is dependent on the number of coordinated points, their distribution and its interpolation. (Yilmaz, 2010) This paper tends to outline the significance of the UAV photogrammetry over classical terrestrial GPS measurements in some particular cases for the mine engineering needs
Summary
UAV photogrammetry has recently increased its popularity among numerous engineering spheres. There are various ways in which to obtain information about the current state of a quarry These are terrestrial geodetic measurements using a total station, GNSS techniques, terrestrial and aerial photogrammetry and last but not least laser scanning. (Mazhrakov, 2007) No matter how frequent the necessity of surveying the stockpiles is, mining companies should be presented with the fastest, most effective and reliable methods of measurements and calculations. (Patikova, 2004) In comparison to classical geodetic methods, close range photogrammetry is an efficient and fast method It can significantly reduce the time required for collecting terrestrial data. (Yilmaz, 2010) This paper tends to outline the significance of the UAV photogrammetry over classical terrestrial GPS measurements in some particular cases for the mine engineering needs The presentation of the surface on the other hand is dependent on the number of coordinated points, their distribution and its interpolation. (Yilmaz, 2010) This paper tends to outline the significance of the UAV photogrammetry over classical terrestrial GPS measurements in some particular cases for the mine engineering needs
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