Impervious earth surface space layout rapid optimization method for urban rainstorm waterlogging prevention and control

An urban rainstorm and optimization method technology, applied in the direction of instruments, data processing applications, forecasting, etc., can solve the problems of comprehensive optimization that is difficult to consider other waterlogging factors, lengthy optimization time, and large space transformation intensity, etc., to achieve optimization time and optimization time. The effect of reducing and ensuring consistency

Active Publication Date: 2020-06-12
SOUTH CHINA NORMAL UNIVERSITY
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Problems solved by technology

From the perspective of spatial layout, the research group aims to minimize the runoff coefficient calculated by the SCS-CN model, uses the ant colony algorithm as a cyclic iterative optimization training model, and builds a loosely coupled model with the help of connection elements on the impervious surface. The principle of spatial exchange of surface types preliminarily realizes the spatial layout optimization of impervious surfaces in a small area, but this method still has the shortcomings of long optimization time and high intensity of spatial transformation, which makes it difficult for the model to comprehensively optimize considering other waterlogging factors

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  • Impervious earth surface space layout rapid optimization method for urban rainstorm waterlogging prevention and control
  • Impervious earth surface space layout rapid optimization method for urban rainstorm waterlogging prevention and control
  • Impervious earth surface space layout rapid optimization method for urban rainstorm waterlogging prevention and control

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Embodiment

[0062] Related technical terms of the present invention are explained as follows:

[0063] Impervious surface: Man-made hard surfaces that hinder the infiltration of surface water in urban areas, including roofs, squares, parking lots, roads, etc.

[0064] Spatial layout optimization: In order to achieve a specific goal, use certain means to realize the optimal allocation and adjustment of urban land resources, and realize the maximum benefit of the target demand.

[0065] Coupling model: Realize the connection and dependence between different algorithm models through common parameters or element conditions.

[0066] The invention is a method for quickly optimizing the spatial layout of impermeable surfaces for urban rainstorm and waterlogging prevention, and a method for quickly optimizing the spatial layout of impermeable surfaces based on multivariate linear programming and the SCS-CN model.

[0067] The SCS-CN model is a hydrological model that accurately calculates surfa...

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Abstract

The invention discloses an impervious earth surface spatial layout rapid optimization method for urban rainstorm waterlogging prevention and control. The method comprises the steps that S1, a conceptmapping relation between an impervious earth surface spatial layout optimization problem and a multivariate linear programming problem for rainstorm waterlogging prevention and control is established;s2, constructing a linear objective function, and converting the objective function with the minimized runoff coefficient into a most direct linear programming objective function through a linear relationship; s3, setting a linear constraint condition; and S4, calculating an optimization result, sequentially setting constraint conditions corresponding to the runoff cells, carrying out loop iteration to carry out linear programming solution, and substituting the solved optimal impermeable surface into the SCS-CN model to carry out result evaluation. According to the method, the total impervious surface area constraint is added into the multivariate linear programming constraint condition, strict limitation of the total impervious surface area is achieved, the consistency of urban impervious representative areas before and after space optimization is guaranteed, and the influence of the impervious surface on rainstorm waterlogging is reduced from the perspective of space layout optimization.

Description

technical field [0001] The invention relates to the technical field of geographic information systems and the field of urban space planning, in particular to a method for quickly optimizing the spatial layout of impermeable surface surfaces for urban rainstorm and waterlogging prevention and control. Background technique [0002] With the rapid development of urbanization, rainstorm and waterlogging have become a typical "urban disease" in my country, seriously hindering the sustainable development of cities. Among them, urban impermeable surface, as the main symbol of urban development, has been proved to have an important impact on urban rainstorm waterlogging from two perspectives of area and spatial layout. The rapid expansion of urban impervious surfaces reduces the efficiency of rainwater infiltration, leading to a reduction in the runoff time of urban surfaces, an increase in surface runoff, and frequent occurrence of urban rainstorm and waterlogging disasters. There...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/26
CPCG06Q10/04G06Q50/26
Inventor 赵耀龙邢汉发余华飞
Owner SOUTH CHINA NORMAL UNIVERSITY
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