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

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...

AI Technical Summary

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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