Choosing a camera for mine surveying of mining enterprise facilities using unmanned aerial vehicles

Vsevolod Kalinichenko¹, Oleksandr Dolgikh¹, Lubov Dolgikh¹, Serhii Pysmennyi¹

¹Kryvyi Rih National University, Kryvyi Rih, 50027, Ukraine

Min. miner. depos. 2020, 14(4):31-39

https://doi.org/10.33271/mining14.04.031

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ABSTRACT

Purpose. Choosing an effective method for performing the mine surveying of the objects at mining enterprise based on the implementation of practical and analytical work. Particular attention is focused on the use of modern technologies for performing field and cameral work, which, in turn, enable to determine the most effective tools and methods for per-forming survey work in open pits, dumps, in collapse zones, and the like. At the same time, one of the priorities when creating graphic material in the form of a mine surveying plan or other mining-graphic documentation is strict compliance with the requirements for the quality of the drawn up documents.

Methods. Analysis of the experimental data obtained as a result of the survey work: the mine territory, where the earth’s surface collapsed; open pit flank where displacement is observed; open pit area, where reclamation is conducted. The photo-graphic survey from the ground and from the air is made with digital cameras with different specifications for matrices and lenses. When surveying from the ground, photography from a tripod is used, and when surveying from the air, the camera is carried by an unmanned aerial vehicle.

Findings. The qualitative characteristics of the images have been obtained, created by different cameras in various photographic survey conditions. The dependence of the accuracy in determining the points coordinates from the digital images on the quality characteristics of the survey equipment has been obtained, which is used when photographing from the ground or installed on unmanned aerial vehicle.

Originality.Patterns have been obtained between the accuracy of the data, measured from the research object images, and the metric characteristics of digital cameras and lenses that are used to obtain them.

Practical implications. A method has been developed for performing highly efficient photographic surveys of open pits, dumps and other facilities of mining enterprises. Practical data have been obtained and analysed for the use of various types of cameras and lenses to them. The analysis of the measurement characteristics of the images makes it possible to conclude that further research in this direction is necessary in order to improve the existing methods for performing ground and air photography of open pits and other objects of mining enterprises.

Keywords: images, collapse zone, camera, lens, matrix

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