Method for calculating water level-flow relationship under tidal reach sluice

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 in the tidal reaches, and can solve the problems of low calculation accuracy and difficulty in accurately determining the relationship between the water level and flow under the sluice.

Active Publication Date: 2020-08-25
FUJIAN PROVINCIAL INVESTIGATION DESIGN & RES INST OF WATER CONSERVANCY & HYDROPOWER
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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

Method used

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  • Method for calculating water level-flow relationship under tidal reach sluice
  • Method for calculating water level-flow relationship under tidal reach sluice
  • Method for calculating water level-flow relationship under tidal reach sluice

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Embodiment 1

[0032] This embodiment provides a method for calculating the relationship between the water level and flow below the sluice in the tidal river section. This embodiment further describes the present invention in detail in conjunction with the calculation of the relationship between the water level and flow below the Mulanxi Ninghai sluice. The 34.1km river channel below Mulan Pit is the tidal section of the lower reaches of Mulan River, where the tidal effect is obvious. During high tide, the river beach is submerged, and when the ebb tide is exposed, the tide level is higher than that of the plains on both banks during spring tide. The proposed Ninghai Sluice Water Conservancy Project is located at 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 unstructured grids to divide the model. For the impact of...

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Abstract

The invention discloses a method for calculating a water level flow relation under a tidal reach sluice, and belongs to the technical field of water conservancy projects. In order to conveniently andaccurately determine the water level flow relationship under a river mouth tidal reach sluice, a MIKE21 hydrodynamic module is utilized to establish and verify the two-dimensional mathematical model of the tidal river reach, low tide and high tide encountered by sluice discharge are considered, and the water level flow relationship under the sluice is simulated and calculated for sluice energy dissipation and scour prevention design and sluice discharge capability rechecking. According to the method, different flows discharged by the sluice can be well matched with different high and low tidelevels, the calculation result is reliable, the water level flow relation under the sluice can be accurately obtained, and a scientific basis is provided for engineering construction.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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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