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Method for measuring river discharge

A flow and river technology, which is applied in the field of measuring unit width flow and river flow at a certain vertical position in a river, can solve problems such as low efficiency, troublesome use, and long time consumption

Inactive Publication Date: 2010-02-17
朱小文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using the current meter method, it is necessary to use a current measuring cable or a measuring boat, which is cumbersome to use, takes a long time and is inefficient

Method used

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  • Method for measuring river discharge

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Embodiment Construction

[0032] In a straight river section, select a cross section as the flow measurement section. One or several pipelines are arranged along the cross-section at the bottom of the river, and at least one gas outlet is arranged in the middle part of the pipeline. If the river bottom is relatively flat, several gas outlets can also be respectively arranged at different positions of a pipeline. The other end of the pipeline can be placed on a river bank or a bridge. Connect the compressed air to the pipeline and adjust the air pressure so that continuous air bubbles in the river part of the pipeline escape from the air outlet and surface to the water surface. The distance from the bubble emerging point of a certain air outlet to the vertical line passing through the air outlet is L. Through manual measurement or camera telemetry L, the unit river width flow q=kL passing through the vertical line position of the air outlet can be obtained. Among them, k is the average floating speed o...

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Abstract

The invention relates to a method for measuring the unit width discharge of a vertical line position in a river and the river discharge. At present, the most frequently used method for measuring the river discharge is a current meter method. When the current meter method is used, a current measuring cableway or a measuring boat is needed, thereby bringing the problems of troublesome use, long consumed time and low efficiency. In the invention, a pipeline is arranged in the river, one end of the pipeline in the river is provided with an air outlet, and the other end of the pipeline is connectedwith a compression air source. Continuous bubbles escape from the air outlet, and in the process of floating upwards, the bubbles flow downstream with water flows until the bubbles emerge from the water. The unit river width discharge of the vertical line position of the air outlet can be calculated by measuring a vertical line distance between an emerging point of the bubbles on the water surface and the air outlet. When used for measuring the river discharge, the method has the advantages of safety, accuracy, high speed, high efficiency and economization.

Description

technical field [0001] The invention relates to a method for measuring the flow per unit width of a certain vertical line position in a river and the flow of the river. More specifically, a method for measuring river flow using a float floating up from the river bottom is proposed. Background technique [0002] The most commonly used method for measuring river flow is the current meter method. That is, select a cross section on the river as the flow measurement section. Set several vertical lines for flow measurement on this section, and use a current meter to measure the flow velocity at several points in different water depths on each vertical line for flow measurement. Calculate the average velocity of the vertical line accordingly. After measuring the average flow velocity of all vertical lines, the flow through the section can be calculated. When using the current meter method, a current measuring cable or a measuring boat is used, which is cumbersome to use, takes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/52
Inventor 朱小文
Owner 朱小文