METHOD FOR COMPILING A FLOOD HAZARD MAP USING A HYDROGRAPH AND DEVELOPING A HYDROGRAPH TRYGGERED BY DAM-BREAK FROM FLOOD

摘要

The present invention relates to forward and backward algorithms for outflow curve calculation which is predicted in case of the collapse of riverside structures such as a dam, an embankment, etc. and, more specifically, to outflow curve calculation which is necessarily required to check an accurate damage extent and an inundation depth in case of floods, and dam or embankment collapsing caused by a typhoon and heavy rain; and a method for creating a flood danger map by using the same. The outflow curve calculation and the method for creating the flood danger map by using same in case of the collapse of dam or embankment caused by the flood comprises: a step for solving a nonlinear collapse equation for the outflow movement of effusion generated in case of the collapse of dam or embankment caused by the flood; a step for solving a nonlinear ordinary differential equation by using a reverse algorithm representing a dam collapse model outflow curve with the nonlinear collapse equation; and a step for mapping the flood danger map by applying a channel tracking method based on the nonlinear ordinary differential equation solved by using the reverse algorithm.