REAL-TIME INUNDATION INSIDE LEVEE PREDICTION METHOD FOR EVALUATING FLOODING ABOVE THE FLOOR BY THE INUNDATION DEPTH DISTRIBUTION CALCULATED FROM INUNDATION WATER VOLUME AND WAVE ARRIVAL TIME

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  • 湛水量と洪水到達時間により算定される浸水深分布から床上浸水を評価するリアルタイム内水氾濫予測方法

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<p> This study proposes real-time inundation inside levee prediction method evaluating inundation depth distribution by inundation water volume and wave arrival time. This method saves the depth distributions pre-calculated by flood analysis with multiple hyetographs in preparation phase, and calls these depth distributions according to inundation water volume and wave arrival time by the arbitrary hyetograph in realtime operation phase. This reduces the computational load. At the time for verification of the proposed method, flood analysis results are compared between conventional two-dimensional indefinite flow calculation and proposal method. In addition, it is examined the display of the proposed method by color scheme according to Guide to Creating Flood Hazard Maps in Japan. The proposed method can evaluate such as inundation water volume against elapsed time, maximum inundation depth distribution, and occurrence time and location of inundation above the floor. As a result, the proposed method can evaluate inundation above the floor.</p>

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