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A runoff forecasting method for uncontrolled area based on the coupling of hydrological and hydrodynamic models

A dynamic model and hydrodynamic technology, which is applied in the field of runoff forecasting in uncontrolled areas, and can solve problems such as difficulty in directly constructing hydrological models.

Inactive Publication Date: 2019-03-08
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the broken underlying surface in the uncontrolled area, it is difficult to directly construct a hydrological model; in the research on the coupling of hydrological models and hydrodynamics, issues such as the construction of the river network structure and the distribution of runoff in the uncontrolled area are rarely involved

Method used

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  • A runoff forecasting method for uncontrolled area based on the coupling of hydrological and hydrodynamic models
  • A runoff forecasting method for uncontrolled area based on the coupling of hydrological and hydrodynamic models
  • A runoff forecasting method for uncontrolled area based on the coupling of hydrological and hydrodynamic models

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Embodiment Construction

[0037] The specific implementation of the method for forecasting runoff in uncontrolled areas based on the coupling of hydrology and hydrodynamic models involved in the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038]

[0039] Such as figure 1 As shown, in this embodiment, the uncontrolled area of ​​the Poyang Lake Basin is taken as an example to describe the method for forecasting runoff in the uncontrolled area of ​​the present invention. figure 1 (a) Shows the structure of the Poyang Lake watershed. The entire watershed includes three parts: the controlled area, the uncontrolled area and Poyang Lake. The watershed in the control area includes five major sub-basins: Xiushui River Basin, Ganjiang River Basin, Fuhe River Basin, Xinjiang River Basin, and Raohe River Basin; the runoff is determined by seven runoff measurement stations—Qiujin and Wanjiabu, Waizhou, and Lijiadu , Meigang, Hushan and Dufengkeng control. ...

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Abstract

The invention provides a runoff forecasting method for an uncontrolled area based on coupling of hydrological and hydrodynamic models, which is characterized in that the method comprises the followingsteps of 1 constructing a river network basin structure of a control area by using a SWAT model; 2 constructing a lake hydrodynamic model without considering runoff of an uncontrolled area by using aDelft3D model; 3 coupling the hydrological model of the basin with the hydrodynamic model of the lake, constructing the structure of the river network in the uncontrolled area; constructing the SWATmodel of the whole watershed to calculate the runoff of the uncontrolled area; carrying out the runoff distribution in uncontrolled area; constructing a lake hydrodynamic model considering runoff in uncontrolled area; 4 verifying the runoff simulation results in uncontrolled area. The simulation accuracy of runoff in uncontrolled area is verified by comparing the simulation accuracy of runoff in outlet of lake hydrodynamic model with runoff in uncontrolled area and without runoff in uncontrolled area.

Description

technical field [0001] The invention belongs to the field of hydraulic engineering, in particular to a method for forecasting runoff in uncontrolled areas based on the coupling of hydrology and hydrodynamic models. Background technique [0002] Uncontrolled areas refer to areas without measured hydrological data or insufficient measured hydrological data. In the present invention, it specifically refers to the area without actual measured runoff data extending from the most downstream boundary of the upstream control area to the upper boundary of the downstream ponded water area. Uncontrolled areas of this type are widespread in the outer buffer zones of rivers, lakes and ocean boundaries. Due to the absence of measured hydrological data, uncontrolled areas are often ignored in water volume estimation, making it difficult to accurately calculate water resources, which poses great difficulties for global and regional water resource management and flood and drought prevention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2119/06G06F30/20
Inventor 张玲陆建忠陈晓玲
Owner WUHAN UNIV
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