Flood disaster risk assessment method based on heterogenous multi-scale monitoring data

Abstract

The invention relates to flood disaster risk assessment, in particular to a flood disaster risk assessment method based on heterogenous multi-scale monitoring data, which comprises the following steps: acquiring heterogenous multi-scale monitoring data, establishing an index system after analysis, screening and determining a basic risk factor set, determining each network node and causal relationship. constructing a Bayesian network risk assessment model based on each network node and the causal relationship, performing fuzzy evaluation on the network nodes, performing defuzzification, calculating the posterior probability of the target event, and performing flood disaster risk assessment based on the posterior probability of the target event. According to the technical scheme, the defects that in the prior art, spatial heterogeneity of flood risks cannot be effectively handled, and the problems of risk dynamic changes and risk multi-level in the flood disaster breeding, occurrence and development process cannot be effectively solved can be effectively overcome.

Description

technical field [0001] The invention relates to flood disaster risk assessment, in particular to a flood disaster risk assessment method based on heterogeneous and multi-scale monitoring data. Background technique [0002] With global warming, flood disasters are becoming more frequent, and disaster risk monitoring, early warning and assessment, as an important means of disaster prevention and mitigation, have become one of the core contents of current disaster science research. Flood disaster is one of the most frequent and serious natural disasters in the world. In recent years, the occurrence of flood disasters in China has become more frequent and more intense, and the impact and damage on human society, economy and ecological environment have become more and more serious. Due to the lack of ideological and material preparations for the occurrence of flood disasters, it is not uncommon for disaster losses to increase. Therefore, it is of great practical significance to...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above-mentioned shortcomings in the prior art, the present invention provides a flood disaster risk assessment method based on heterogeneous and multi-scale monitoring data, which can effectively overcome the spatial non-uniformity existing in the prior art that cannot effectively deal with flood risks, It cannot effectively solve the defects of risk dynamic changes and multi-level risks in the process of flood disaster breeding, occurrence and development

Images