Self-recording different sand content water flow rate measuring device and measuring method

Abstract

The invention discloses a self-recording different sand content water flow rate measuring device and measuring method. The device comprises a floating ball, an inelastic connecting rope, a slip ring, an elastic upright post, a stress sensor and a data acquisition recorder. The method comprises: (1) preparing a muddy water sample with different sand content S, measuring the content D of each diameter of sand grains in the muddy water sample, pouring the muddy water into a simulated channel at different flow rate to obtain water flow with different flow rate, acquiring the actual flow rate U of the water flow by using a noncontact electronic current meter, meanwhile, obtaining the bending stress F of the elastic upright post via the stress sensor, and establishing a corresponding relation among U, F, S and D according to the series of experimental data to obtain U=(F, S, D, F*S, F*D, S*D); and (2) substituting the content D of each diameter of sand grains of the water flow, the sand content and the bending stress F acquired by the measuring device into the model to obtain an actual water flow rate U. The device and the method can be used for measuring and recording the different sand content water flow rate, the measuring result is accurate, and the device is simple in structure.

Description

technical field [0001] The invention relates to the field of water flow velocity measurement research, in particular to a self-recording type water flow velocity measurement device and a measurement method with different sand contents. Background technique [0002] The measurement of water flow velocity on slopes and ditches plays an important role and significance in the study of soil and water conservation on slopes and ditches. Flow velocity measurement is relatively difficult. At present, the following two methods are mostly used for the measurement of water flow velocity on slopes or channels: one is to use non-contact equipment for measurement. This type of equipment has better accuracy, but it is expensive and expensive, and it is not easy to popularize and use. The other is to use tracer methods based on more traditional colors or saline solutions, which have relatively poor precision. And above-mentioned two kinds of equipment all can't avoid the influence that sa...

AI Technical Summary

Problems solved by technology

[0002] The measurement of water flow velocity on slopes and ditches plays an important role and significance in the study of soil and water conservation on slopes and ditches. Relatively difficult to measure flow rate

At present, the following two methods are mostly used for the measurement of water flow velocity on slopes or ditches: one is to use non-contact equipment for measurement. This type of equipment has better accuracy, but it is expensive and expensive, and it is not easy to popularize and use

The other is to use tracer methods based on more traditional colors or salt solutions, which have relatively poor accuracy

Moreover, the above two devices cannot avoid the impact of sand content on their measurement results.

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