Evaluation of Flood Mitigation Physical Examination in Zhengzhou City from the Perspective of Resistance

Abstract

In recent years, the study of urban flood resistance has included the perspectives of spatial environment and multiple elements of urban space, which break through the limitation of only focusing on engineering measures in traditional disaster prevention. The article constructs a flood prevention and mitigation index system under the perspective of resistance based on the basic work of urban physical examination and ignoring the variability of population size affected by floods in different regions. It also takes 6 districts and 6 counties under the jurisdiction of Zhengzhou City as the research object, combines the relevant data of 12 cities, uses the entropy weight method and the coefficient of variation method to determine the index weights comprehensively and introduces the barrier degree diagnosis model. This article carries out urban flood control and disaster reduction special physical examination, considers resistance obstacle factors and promotes strategy analysis and research. The results show that from the perspective of spatial distribution, the flood control and flood mitigation resistance of Zhengzhou City is in a “differential” distribution state and the high resistance areas are Erqi District, Jinshui District and Gongyi City. In general, the resistance index in the southwest region was higher than that in the northeast region and there was a significant difference between urban areas and counties, showing a medium-high and medium-low resistance status. From the results of the study, to improve the level of resistance to flood mitigation in each city, it is necessary to focus on the main obstacle factors that hinder the development of the city and to fundamentally improve the level of resistance to create a more livable and healthier city according to local conditions.