PRELIMINARY RESEARCH OF REAL-TIME INUNDATION INSIDE LEVEE PREDICTION METHOD AIMING AT EVALUATION OF INUNDATION ON THE FLOOR

Abstract

 This study summarizes the progress of the development of real-time inundation inside levee prediction method that aim at the evaluation of floor inundation. This method saves the depth distributions pre-calculated by dynamic models in preparation phase, and calls these depth distributions according to the arbitrary hyetograph in real-time 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. As a result, although the proposed method can calculate the time change of the inundation water volume, the proposed method cannot estimate inundation depth distribution at arbitrary time. However, if the proposed method calculates from the occurrence of inundation to the elimination, proposed method obtains maximum inundation depth equivalent to conventional. Therefore, the proposed method cannot evaluate the time of occurrence of inundation on the floor, but can evaluate the presence or absence of inundation on the floor.