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Leakage Risk Analysis of Reservoir Embankment Using Unmanned Aerial Vehicle System

±èÀçÈÖ(Kim Jae hwi) , ¹Ú¼º½Ä(Park Song sik) , °­ÈñÁø(Kang Hee jin) , ¾ç±Ç¼®(Yang Kwon seok) , ¹Ú¼ºÁø(Park Seong jin) , ±è¿ë¼º(Kim Yong seong) Àú

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Majority of domestic reservoirs are decrepit from leaking water and deformations and derived high risk of safety. Typical precision safety diagnosis of reservoir embankment goes through field exterior survey, ground survey, and seismic survey for stability of embankment but this requires considerable time and money and not even precise for analysing embankment leakage investigation. This study, attempted to propose a new method using UAVS (Unmanned Aerial Vehicle system) for embankment risk analysis and efficient embankment stability assessment. First, obtained normal orthomosaic and thermal orthomosaic images of model reservoir was obtained with UAVS and made 3D terrain model was made. Then thermal distribution of downstream slope from thermal orthomosaic was analyzed. Comparing with precise safety material, error of measurement from 3D model was minute and low temperature area distribution was corresponding with ideal range of precise safety diagnosis. It is figured out that UAV method is one of the quick and economical methods for risk analysis of embankment and efficient reservoir field survey.

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