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Cascaded multi-ditch gate lockage discharge coefficient calibration method

A technology of gate flow and gate, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., to achieve the effect of improving accuracy and precision

Active Publication Date: 2017-06-20
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for calibrating the discharge coefficient of gates in series multi-drainage ponds, so as to solve the aforementioned problems in the prior art

Method used

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  • Cascaded multi-ditch gate lockage discharge coefficient calibration method
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  • Cascaded multi-ditch gate lockage discharge coefficient calibration method

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Embodiment 1

[0102] The South-to-North Water Diversion Middle Route Project can alleviate the shortage of water resources in northern China, improve the ecological environment, and promote sustainable economic and social development, which has important strategic significance. The middle route of the South-to-North Water Diversion Project is 1,277km long from the head of the Taocha Canal to Tuancheng Lake in Beijing, and a total of 64 control gates (except for the pumping station at Huinan Station, all arc-shaped gates) are installed. This is the basis for realizing timely and appropriate water supply for the South-to-North Water Transfer Project . The calculation of the gate flow rate is a prerequisite for accurate implementation of channel control. Accurate calculation of the gate flow rate can ensure the quality and quantity of water supply in the channel and ensure the safe operation of the channel. The implementation steps are as follows:

[0103] Step 1: According to different flow ...

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Abstract

The invention discloses a cascaded multi-ditch gate lockage discharge coefficient calibration method, and relates to the field of hydrodynamic parameter identification. The method comprises the steps of building a hydrodynamic simulating and forecasting model of a researching channel section; combining flow measured values and water level measured values of all gates in the researching channel section, and using a Kalman filtering assimilation algorithm to obtain a real-time analysis water level sequence; utilizing a Saint-Venant equation to deduce and obtain an analysis flow sequence of a ditch gamma according to the real-time analysis water level sequence of the gates of any ditch gamma in the researching channel section; deducing and obtaining a ditch gamma lockage discharge coefficient by utilizing the real-time analysis water level sequence of the gates of the ditch gamma and the analysis flow sequence of the ditch gamma. By means of the cascaded multi-ditch gate lockage discharge coefficient calibration method, the precision of the hydrodynamic simulating and forecasting model is sharply improved, and the accuracy of a forecasting value is improved.

Description

technical field [0001] The invention relates to the field of hydrodynamic parameter identification, in particular to a method for calibrating flow coefficients of gates in series multi-canal ponds. Background technique [0002] The operating conditions of large multi-channel water supply channels generally do not change significantly. Under the condition that the operating conditions are basically unchanged, the relationship between the gate flow and water level is described by a gate flow coefficient. [0003] In the actual water diversion project of multiple canal sections in series, it is often necessary to calculate the gate opening according to the gate flow rate. The more accurate the rate setting of the gate flow coefficient, the more reasonable the gate operation can be provided. Therefore, the relationship between flow and water level at the gate can be accurately described, which directly determines whether the prediction of the operation of the water diversion pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/20
Inventor 雷晓辉孔令仲尚毅梓王超王浩蒋云钟郑和震
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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