Modeling evaluation method for urban heavy rain inundation
A technology of urban waterlogging and rainstorm, applied in the direction of measuring devices, instruments, meteorology, etc., can solve the problems of inability to calculate the risk of rainstorm, loss and damage area, personal accident property, insufficient preparation work, etc., to reduce property loss and ensure personal safety safe effect
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[0056]In order to enable those skilled in the art to better understand the inventive solutions, the technical solutions in the embodiments of the invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the invention.
[0057] Such as Figure 1-14 As shown, a method for modeling and evaluating urban waterlogging in heavy rain, the operation steps are as follows:
[0058] (1) Establish a digital elevation model according to the area to be evaluated. In this embodiment, the area to be evaluated is a city, and the digital elevation model is divided into several grids; the digital elevation model (DEM) is a model of the earth's surface Mathematically, it is realized through a set of mathematical arrays, which record a series of elevation values on the ground in a certain area. It is a kind of Digital Terrain Model (DTM). The digital terrain model not only describes the elevation information, but also includes many terrain ...
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