Abstract
Climate change is leading to an increase in the frequency of natural disasters, including storms and floods. Rivers with high sinuosity are experiencing severe floods due to the heightened river discharge caused by climate change. In this study, we focused on the downstream section of the Samcheok Osipcheon basin (from 20.8km to 26km), where the lack of embankment height poses an overflow risk. We used the two-dimensional Iber model to analyze the boundary conditions of the basic river plans for comparison. Our findings reveal an average difference of 0.45m between the river comprehensive plan and the actual water level. At the high bend, the maximum water level difference was 1.25m, with a maximum superelevation difference of 1.49m. To better understand and utilize the hydraulic characteristics of the river bends experiencing superelevation, we propose the application of both one-dimensional and two-dimensional Iber models for analysis and design purposes.
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