A Calculation Method of Water Level and Flow Relation Under the Sluice of Tidal Reach

A technology of flow and water level, which is applied in the field of calculation of the relationship between water level and flow under the sluice of the tidal river section, can solve the problems of low calculation accuracy and the difficulty of accurately determining the relationship between the water level and flow under the sluice

Active Publication Date: 2022-06-03
FUJIAN PROVINCIAL INVESTIGATION DESIGN & RES INST OF WATER CONSERVANCY & HYDROPOWER
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  • Abstract
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Problems solved by technology

At present, there are many studies on the relationship between water level and flow, most of which are traditional fitting methods of water level and flow relationship. For rivers with complicated flow conditions, the calculation accuracy is not high, especially for rivers in tidal sections affected by both runoff and tidal currents, where the water flow reciprocates. It is not easy to accurately determine the relationship between water level and flow under the sluice

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  • A Calculation Method of Water Level and Flow Relation Under the Sluice of Tidal Reach
  • A Calculation Method of Water Level and Flow Relation Under the Sluice of Tidal Reach
  • A Calculation Method of Water Level and Flow Relation Under the Sluice of Tidal Reach

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Embodiment 1

[0032] This embodiment provides a method for calculating the relationship between water level and flow under a sluice in a tidal river reach. This embodiment further describes the present invention in combination with the calculation of the relationship between water level and flow under the sluice in Mulanxi Ninghai sluice. The 34.1km river channel below Mulanpi is the tidal river section in the lower reaches of Mulan River. The tidal effect is obvious. When the tide is high, the river beach is submerged, and the riverbed is exposed when the tide is low. When the tide is high, the tide level is higher than the plains on both sides. The proposed Ninghai Sluice Water Conservancy Project is located in the estuary section of the lower reaches of Mulan River.

[0033] 1.1 Model establishment

[0034] In order to make the calculation results of the model more reasonable and accurate, this hydrodynamic mathematical model uses an unstructured grid to divide the model. The upper bound...

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Abstract

The invention discloses a calculation method for the relationship between water level and flow under a sluice in a tidal river section, and belongs to the technical field of water conservancy engineering. In order to conveniently and accurately determine the water level and flow relationship under the sluice sluice in the tidal section of the mouth of the river, the present invention uses the MIKE21 hydrodynamic module to establish and verify the two-dimensional mathematical model of the tidal river section, and considers that the sluice discharge encounters low tide and high tide, and simulates the flow rate under the sluice. The relationship between water level and flow is used in the design of energy dissipation and anti-scour of sluices and to check the discharge capacity of sluices. This method can better match the different discharge discharges of the sluices with different high and low tide levels, the calculation results are reliable, and the relationship between the water level and flow under the sluice can be obtained more accurately, which provides a scientific basis for engineering construction.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to a method for calculating the relationship between water level and flow under a sluice in a tidal reach. Background technique [0002] The calculation of the relationship between the water level and flow under the gate is a key basic work in the design of water conservancy and hydropower projects, and plays a very important role. The measured flow of the river, the corresponding water level and some other necessary parameters are the necessary conditions for establishing a more accurate water level-discharge relationship. However, in actual work, the flow measurement is more complicated and difficult to carry out continuously. Therefore, in hydrological calculation or hydrological In the forecasting work, the flow data is generally obtained by using the hydraulic formula based on the water level data obtained by continuous measurement. [0003] I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/28G06F113/08G06F119/14
CPCG06F30/20G06F30/28G06F2113/08G06F2119/14Y02A10/40
Inventor 王新强胡朝阳梁越王乐乐王星莉何承农高梦露
Owner FUJIAN PROVINCIAL INVESTIGATION DESIGN & RES INST OF WATER CONSERVANCY & HYDROPOWER
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