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Method for fast flood forecasting of river floodplains

A technique of flooding and flooding, applied in water conservancy projects, water conservancy engineering equipment, construction, etc.

Inactive Publication Date: 2012-03-21
程晓明
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002]At present, the outstanding problem in the flood control and reporting of river flood floods is that the monitoring and reporting of flood flow in the floodplain takes too long, which is far from meeting the requirements of flood control, disaster reduction and flood reporting

Method used

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  • Method for fast flood forecasting of river floodplains
  • Method for fast flood forecasting of river floodplains

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0008] A implementation method (see attached picture):

[0009] a. Use the measured water level-area (H~A) data of the large section of the beach before the flood in the year close to the first flood in previous years (Figure 01), and the measured flood level-discharge (H-Q) data of the beach in the flood season of the same year in 01 (Figure 01 02), virtualized the flood season water level-velocity (H-V) data of the section beach (Fig. 03), that is, V 汛期 =Q 汛期 / A 汛前 , for the design year;

[0010] b. Using the data of water level-area (H-A) of the large cross-section measured before the flood in the design year (Fig. 04) and the data of flood level-velocity (H-V) in the flood season of the flood season (Fig. 03) virtualized in a, the design is calculated. The relationship curve of virtual water level-discharge (H-Q) in beach flood during annual flood season (Figure 05);

[0011] c. After the flood flood in the flood season of the design year, use the measured water level-...

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Abstract

The invention provides a method for fast flood forecasting of river floodplains. The invention adopts the main technical scheme that the method comprises the following steps of: establishing three design curves for flooding of the floodplains: water level-flow rate, water level-area and water level-flow velocity, calculating the needed water level grade 'calculated flow rate of floodplains' according to the design curves, and carrying out flood forecasting by adding corresponding water level grade 'actually-measured flow rate of the main river channel' as 'full-section flow rate'. Since the actual measurement problem of the flooding flow rate of the floodplains is not related, the purpose of fast flood forecasting is achieved, the guarantee rate of flood forecasting is high, and the flood forecasting accuracy meets the requirement of the hydrologic measurement and forecasting specification by inspection.

Description

[0001] Technical Field The present invention relates to the technical field of river flood control, in particular to a method for rapid flood reporting of river floodplains. Background technique [0002] At present, the outstanding problem in the flood control and flood reporting of river floodplain floods is that the flood discharge measurement and reporting time in the floodplain is too long, which is far from meeting the requirements of flood control and disaster reduction and flood reporting. One problem to be solved by the present invention is to ensure the accuracy of flood reporting and effectively shorten the duration of flood reporting, so as to achieve the purpose of quickly snapping and reporting water conditions. Contents of the invention [0003] The technical problem to be solved by the present invention is: establish three kinds of design curves of overflood in floodplain flood plain: water level~flow rate (H~Q), water level~area (H~A), water level~flow velo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B1/00
Inventor 程晓明程迎春时文博
Owner 程晓明
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