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Hydrological model based on geomorphic unit line

A hydrological model and unit line technology, applied in computational models, biological models, 3D modeling, etc., can solve the problems of too empirical model structure, poor model portability, and many model parameters

Active Publication Date: 2020-02-11
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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  • Hydrological model based on geomorphic unit line
  • Hydrological model based on geomorphic unit line
  • Hydrological model based on geomorphic unit line

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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 hydrological model based on a geomorphic unit line. The hydrological model comprises the following steps: calculating canopy interception according to rainfall and normalizeddifference vegetation index (NDVI) data; calculating the earth surface and underground water replenishment amount according to a full-storage and over-seepage comprehensive runoff production mode; calculating a geomorphic unit line according to the surface runoff volume and the DEM data so as to calculate the surface runoff volume; calculating underground runoff according to the groundwater supply amount and the underground linear reservoir; and taking the sum of surface runoff and subsurface runoff as drainage basin outflow. According to the method, the basin flood process can be well simulated, the parameter determination method is simple and clear, the input data source is stable and reliable, and the method plays a positive role in flood forecasting and early warning research in regions without data and regions lack of data.

Description

technical field [0001] The invention belongs to the technical field of hydrological forecasting, in particular to 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 phenomena in the process of rainf...

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Application Information

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IPC IPC(8): G06F16/29G06T17/05G06N3/00
CPCG06N3/006G06T17/05G06F16/29Y02A90/10
Inventor 崔巍王文
Owner HOHAI UNIV
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