Urban water-logging analysis method and urban water-logging analysis system

Abstract

The invention discloses an urban water-logging analysis method and an urban water-logging analysis system in order to solve the problem in the existing water-logging analysis method that inaccurate results are caused as there is no accurate data of underground drainage facilities and a lot of variables in the model are simulated data. The method comprises the following steps: generating an urban space model containing all depressions according to urban space information; getting the water depth of each depression according to the acquired predicted total rainfall within a period of time T, the area of the depression and the underground pipeline information; judging whether the water depth is greater than a set threshold; and generating alarm information characterizing depression water-logging if the water depth is greater than the set threshold. According to the technical scheme, a rainfall model, a confluence model and an improved drainage model form a water model, the generalization problem of urban drainage system facilities in the traditional rainstorm water-logging mathematical model is solved, and the accuracy of water depth prediction is improved.

Description

technical field [0001] This application relates to the technical field of municipal engineering, in particular to a method and system for analyzing urban waterlogging. Background technique [0002] With the acceleration of modernization and urbanization, urban construction is constantly pursuing "cement hardening", which weakens the infiltration capacity of rainwater and increases the burden on urban underground drainage systems. In recent years, more and more large cities have experienced severe urban waterlogging due to short-term heavy rainfall. Urban waterlogging will cause serious inundation losses to some areas, resulting in urban traffic paralysis, affecting urban life and work order, and affecting urban residents. Life and property pose a huge threat. Therefore, the vulnerability of urban defense against meteorological disasters has attracted widespread attention from all walks of life. [0003] Waterlogging is generally easy to appear in urban waterlogging-sensitiv...

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Problems solved by technology

[0004] The embodiment of the present invention provides an urban waterlogging analysis method and system to solve the problem that in the existing waterlogging analysis method, there is no accurate data for underground drainage facilities, and many variables in the model are simulated data, resulting in inaccurate results The problem

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