Digital images as well as contemporary photogrammetric techniques help generate accurate geometric 3D models. The main technical processes and prospects of UAV mapping and automatization are presented and described. Furthermore, it deals with UAV data integration into GIS and conducting spatial analysis. The following article outlines the technology of creating a 3D model of an open pit quarry based on UAV digital images. In this article, it is briefly described the use the UAV drone on mine survey in Nepal which is fast, safe, reliable, more accurate, easy to calculation of volume, analysis and interpretation from the continuous image data. The resulting map /data indicates the quarry area, mines area and lease area, dump site, stock yard and top soil yard as well as land cover map. After image processing we can get Orthophoto, contours, digital terrain model, digital surface model and 3D model of the survey area. The contribution of this paper is to low cost and easy to use for supporting mining industries with better than 10cm spatial resolution multispectral imagery with land cover details map. GIS and photogrammetry software used for image processing, mapping of mining area. The main objective of this paper is UAV drone technology to use image capturing for surveying and mapping of open caste mining and surface area of the industries of Nepal. So, UAV drone technology is easy to use for surveying and mapping in mining industries in Nepal. The human mine surveying and mapping one of the most challenging parts all over the world because mine is an incredibly dangerous industry. Mining is an important activity of the primary sector with strong economic development of Nepal. The mountain areas have very high topographical range, steeply slope, and cliff areas so it is not easy to use for mining surveying and mapping with human. The most of the mines and minerals lies in mountain areas of Nepal and were mined extensively in the past before Second World War II. Nepal is the one of the most topographically variation country as altitude varies from 59m to 8848.86m above mean sea level. The study case was performed as a part of a master thesis. On the other hand, UAV photogrammetry presents a fast, accurate method for mapping large areas and calculating stockpiles volumes. On one hand, extremely precise measurements could be performed by GNSS technologies, however, it could be really time consuming. Often legislations concerning mine engineering state that the volumetric calculations are to present ☓% accuracy of the whole amount. In other words, this means getting an objective evaluation of the processes, using up-to-date technologies and reliable accuracy of the results. Fast and precise acquisition of measurements regarding the process taking place in a quarry is the key to an effective and stable maintenance. 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. Having considered how dynamic our world is, new techniques and methods should be presented in numerous fields. Secondly, the area of the whole quarry including the stockpile site was mapped by a UAV flight. Firstly, a stockpile was measured by GNSS technologies and later other terrestrial GNSS measurements for modelling the berms of the quarry were taken. For this purpose, an appropriate open pit quarry has been chosen. The following paper aims to test and evaluate the accuracy of UAV data for volumetric measurements to the conventional GNSS techniques.
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