Flood inundation risk assessment method, device and equipment and storage medium

Abstract

The invention relates to the technical field of hydrological disaster early warning, and discloses a flood inundation risk assessment method, device and equipment and a storage medium, and the method comprises the steps: building a corresponding historical water level-flow relation curve based on the water level and flow of each historical time period; acquiring a preset flood frequency; curve correction is carried out based on hydrological conditions, and a target water level-flow relation curve is obtained; under a preset flood frequency, carrying out submerging dynamic simulation based on the target water level-flow relation curve and the real-time hydro-meteorological data to obtain a submerging simulation result; and based on the inundation simulation result, the auxiliary data and the digital elevation model, determining and integrating multi-dimensional risk assessment results to obtain the inundation risk of the research area under the preset flood frequency. According to the method, the historical curve is dynamically migrated to the current condition, the preset flood frequency is met, the actual flow passing capacity of the river channel is fit, overestimation or underestimation of the same-frequency flood water level is avoided, the flood risk assessment accuracy is improved, and a scientific basis is provided for comprehensive disaster prevention and reduction.

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