Distributed hydrological model digitalization method for complex underlying surface city area

A distributed hydrology and urban area technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as lack of experience in digital refined input of drainage systems, improve model input accuracy, optimize simulation effects, enhance The effect of suitability
CN107563019AActive Publication Date: 2018-01-09HEBEI UNIV OF ENG +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEBEI UNIV OF ENG
Publication Date
2018-01-09

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Abstract

The invention discloses a distributed hydrological model digitalization method for a complex underlying surface city area. The method comprises the following steps of performing basic data collectingand sorting; performing site survey; performing drainage area division; performing sub water catchment area division; performing sub water catchment unit refinement; performing flow collection point generalization; performing drainage pipeline (network) generalization; performing drainage system refinement processing; and performing model digitalization input. The method has the advantages that through high-precision generalization and digitalization processing, the authenticity and reliability of data, needed to be input, of a distributed hydrological model are realized, and actual underlyingsurface conditions of the city area are restored and simulated as far as possible; the method can be applied to the model digitalization input of the multi-land use type cross distribution city built-up area; and by virtue of an ArcGIS technology and an RS technology, the generalization precision of digitalization of sub water catchment regions and drainage systems in a city range is improved, and the technical problems of hydrological process simulation and the like of the distributed hydrological model in the large-scale complex underlying surface city built-up area under the background ofstrong human activity influence are solved.
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Description

technical field

[0001] The invention relates to the technical field of oil and gas well safety, in particular to a method for digitizing distributed hydrological models of complex underlying surface urban areas. Background technique

[0002] Distributed hydrological model is an important tool that can simulate complex hydrological phenomena and processes, and research and establish hydrological change laws. Its characteristic is that it can reflect the spatial heterogeneity of hydrological processes by means of discrete hydrological units. On the one hand, the complexity of urban built-up areas is reflected in the impact of strong human activities, which have changed the natural underlying surface conditions; on the other hand, the types of construction land (such as residential land, land for public services and commercial service facilities, etc.) Diversity. There are differences in the spatial layout and area ratio of the permeable and impermeable areas in different land ...

Claims

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