IDF curve-based urban disaster-causing rainfall classification and judgment method

Abstract

The invention discloses an IDF curve-based urban disaster-causing rainfall rapid classification and judgment method, belongs to the technical field of urban flood disaster prevention and reduction, and extracts rainfall disaster-causing judgment results more intuitively and richly from the news perspective by utilizing the operability and high efficiency of a novel web crawler technical means. AnIDF curve is further introduced in combination with a local rainstorm intensity formula, the overall characteristics of urban disaster-induced precipitation are fully considered while the scattering defect of the precipitation process is overcome, the determination of the urban disaster-induced precipitation classification judgment standard is realized from the two perspectives of rainfall intensity and rainfall by combining the IDF curve and the precipitation process, and the precision and efficiency of urban disaster-induced precipitation forecasting and early warning are improved; the floodprocesses of different causes are further verified and summarized through the urban rainfall flood model SWMM so that the method can provide technical support for disaster prevention and reduction and drainage planning of domestic plain cities from the perspective of practical application.

Description

technical field [0001] The invention belongs to the technical field of urban flood disaster prevention and mitigation, and in particular relates to a method for classifying and judging urban disaster-causing precipitation based on IDF curves. Background technique [0002] With the rapid advancement of global warming and urbanization, the accumulation of urban heat island and rain island effects has led to uneven temporal and spatial distribution of precipitation in the world, especially in urban areas, and frequent occurrence of extreme precipitation events. Related urban floods have seriously affected the normal operation and operation of cities The safety of people's lives and property. As the direct driving factor of urban flood disasters, precipitation is also the main source of urban surface water renewal. It is of great scientific significance to study the disaster-causing laws of urban precipitation and construct a method to quickly determine the criteria for urban d...

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Problems solved by technology

Previous studies have focused on the analysis of the characteristics of disaster-causing precipitation, such as rain patterns, kurtosis, and

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