A Flood Risk Simulation Method under the Extreme Environment of Heavy Rain, High Water Level and High Tide Level

Abstract

The invention discloses a flood risk simulation method under the extreme environment of heavy rain, high water level and high tide level. The above target data uses the HOHY2 model to construct a one-dimensional flood risk simulation model in the target area; combined with different typical working conditions, the constructed one-dimensional flood risk simulation model is used to numerically simulate the submerged water depth of the target area and the urban submerged water depth, and the inundation water depth of the target area obtained Depth map, combined with the history and actual situation of the area to determine the high-risk areas of flood disasters. The invention can quickly and accurately simulate flood risk situations such as submerged water depth, flood evolution process, and flood propagation time of the target area under different working conditions.

Description

technical field [0001] The invention relates to the technical field, in particular to a flood risk simulation method under the extreme environment of heavy rain, high water level and high tide level. Background technique [0002] In recent years, under the background of global warming, typhoons, rainstorms and floods have occurred frequently in coastal areas of my country, and the scales are huge, causing great harm to the production and life of local people every year. Research and prevention has become a hot topic in the research of emergency disaster prevention. In the face of increasingly frequent and severe flood disasters in my country's coastal areas, it is necessary to do a good job in flood risk simulation in extreme environments while strengthening the construction of engineering facilities. [0003] At present, research and simulation of flood risk in extreme environments at home and abroad mainly focus on the single consideration of the impact of typhoon elements...

AI Technical Summary

Problems solved by technology

However, there is a lack of comprehensive consideration of the risk of typhoons, heavy rains, and high tide level disaster-causing factors to coastal watersheds when major floods caused by typhoons coincide with astronomical high tides and typhoon high-value water increases (superposition of heavy rain, high tide, and typhoon). disaster impact

For coastal cities, the research on the combined effect and correlation characteristics of flood disaster-causing factors is even more insufficient.

Judging from a series of studies and applications at home and abroad, most of the studies on storm surge disasters are based on simple assumptions of typhoons, high tide levels, or single factors such as bank breaks, and there is no comprehensive consideration of tide level, water level and typhoon. Combined effect of wind and rain, a complex scenario analysis system for storm surge disasters including floodplain, overflow and other phenomena with certain logical analysis, the research on disaster scenarios is not comprehensive, and the comprehensive reflection ability is poor

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