THE USE OF UNMANNED AERIAL VEHICLES FOR MONITORING THE CONDITION OF OWNERLESS FLOOD CONTROL HYDRAULIC STRUCTURES OF THE TRANS-BAIKAL TERRITORY

Section
Methods, models and technologies
  • Konstantin A. Kurganovich Eastern Branch of Russian Research Institute for Integrated Use and Protection of Water Resources (FGBU RosNIIVH), Chita, Russia
  • Andrey V. Shalikovskiy Eastern Branch of Russian Research Institute for Integrated Use and Protection of Water Resources (FGBU RosNIIVH), Chita, Russia
  • Maxim A. Bosov Eastern Branch of Russian Research Institute for Integrated Use and Protection of Water Resources (FGBU RosNIIVH), Chita, Russia
  • Denis V. Kochev Eastern Branch of Russian Research Institute for Integrated Use and Protection of Water Resources (FGBU RosNIIVH), Chita, Russia
Keywords: unmanned aerial vehicles (UAVs), structure from motion, terrain model, orthomosaic, ownerless flood control protective hydraulic structures, aerial photography, photogrammetric, image processing

There are a large number of ownerless flood control protective hydraulic structures built without proper design and correct observance of the production technology in the Trans-Baikal Territory. Some dams do not have owners and are not registered in the «Register of hydraulic structures», their condition and mode of use are not controlled. During operation, protective dams are subjected to mechanical and hydrodynamic influences, which carries an increased risk of additional damage due to the overestimated level of protection of the territories. It is necessary to take into account such structures in order to make recommendations for their further use or repair.

This article describes the experience of using unmanned aerial vehicles (UAVs) for examining ownerless flood control protective hydraulic structures of the Trans-Baikal Territory. The scheme of conducting such surveys, which includes several stages, is considered. At the initial stage, the installation of ground reference points markers and their coordination is required. Then, the UAV is circled over the territory and a series of photographs is taken. The next step involves photogrammetric processing of the survey data and obtaining spatially-linked terrain and orthomosaic models, which are then analyzed to identify structural defects.

The use of UAVs during the inspection of flood control structures demonstrated the possibility of a better assessment of their condition compared to traditional instrumental observation methods. To obtain the best result in the simulation, it is recommended to shoot from a height of not more than 200 m and use coordinated reference points that are visible from the air to bind the model to the coordinate system. In this case, the error in determining the elevation of the earth’s surface will not exceed the spatial resolution of the image. The location of the control points does not significantly affect the accuracy of determining the terrain model.

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Published
2020-04-07
How to Cite
Konstantin A. Kurganovich, Andrey V. Shalikovskiy, Maxim A. Bosov, & Denis V. Kochev. (2020). THE USE OF UNMANNED AERIAL VEHICLES FOR MONITORING THE CONDITION OF OWNERLESS FLOOD CONTROL HYDRAULIC STRUCTURES OF THE TRANS-BAIKAL TERRITORY. Hydrosphere. Hazard Processes and Phenomena, 2(1), 32-43. https://doi.org/10.34753/HS.2020.2.1.32

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