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A Construction Method of Hydrological Model Based on Geomorphic Unit Lines

A hydrological model and construction method technology, applied in computational models, biological models, 3D modeling, etc., can solve problems such as many model parameters, too empirical model structure, and poor model portability.

Active Publication Date: 2021-02-09
HOHAI UNIV
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Problems solved by technology

However, as the understanding of various hydrological phenomena in the process of rainfall and runoff continues to deepen, the defects and irrationality of existing hydrological models are gradually exposed, such as too many model parameters, too empirical model structure, and models that can be transferred. At the same time, the application of existing hydrological models generally requires measured flood data to calibrate relevant model parameters

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  • A Construction Method of Hydrological Model Based on Geomorphic Unit Lines
  • A Construction Method of Hydrological Model Based on Geomorphic Unit Lines
  • A Construction Method of Hydrological Model Based on Geomorphic Unit Lines

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Embodiment Construction

[0050] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0051] Taking a flood in the Duli River Basin, a tributary of Mulan River, Putian City, Fujian Province from 6:00 on June 2, 2014 to 17:00 on June 4, 2014 as an example, the effectiveness and rationality of the inventive method are illustrated. The watershed is located in the branch of Mulan River, Putian City, Fujian Province, and the control section is Duli Hydrological Station, with a watershed area of ​​68.57km 2 , a typical subtropical monsoon climate, with an average annual rainfall of more ...

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Abstract

The invention discloses a method for constructing a hydrological model based on a geomorphic unit line. The steps are: calculating canopy interception according to precipitation and normalized difference vegetation index (NDVI) data; and groundwater recharge; calculate the geomorphic unit line based on surface yield and DEM data to calculate surface runoff; calculate underground runoff based on groundwater recharge and underground linear reservoir; use the sum of surface and underground runoff as the outflow of the watershed. The invention can well simulate the flood process of the river basin, the parameter determination method is simple and clear, the source of the input data is stable and reliable, and has a positive effect on carrying out flood forecasting and early warning research in areas without or lacking data.

Description

technical field [0001] The invention belongs to the technical field of hydrological forecasting, in particular to a method for constructing a hydrological model based on geomorphic unit lines. Background technique [0002] In the prevention and control of mountain torrents, the analysis and calculation of storm floods in small watersheds in mountainous areas is one of the very important non-engineering measures. Due to the complexity of the flash flood generation process, the complexity of the characteristics of mountainous watersheds, the uncertainty of short-duration heavy rainfall, and the lack of measured hydrological data in mountainous watersheds, it is very difficult to analyze and calculate the flash flood process. Hydrological model is an important way to describe the formation process of rainfall and runoff in a watershed, and it is also one of the most commonly used means to study flash flood problems. However, as the understanding of various hydrological phenome...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29G06T17/05G06N3/00
CPCG06N3/006G06T17/05G06F16/29Y02A90/10
Inventor 崔巍王文
Owner HOHAI UNIV
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