Bionic river sitting bottom for hydrological sediment monitoring

Abstract

The invention discloses a bionic river sitting bottom for hydrological sediment monitoring. The bionic river sitting bottom comprises a bionic fish frame, a bionic fish shell, a middle partition plate, a movable fish tail, a left cavity, a right cavity, a sediment collection stabilizing plate, a first monitoring equipment clamp, a second monitoring equipment clamp, a third monitoring equipment clamp, a fourth monitoring equipment clamp and a heavy bottom plate. The appearance of the sitting bottom is in a bionic fish shape with a fixed head and a movable tail, the front 2/3 part of the body of the bionic fish keeps rigidity to reduce the swing amplitude of the head, and the rear 1/3 part of the body swings left and right to generate advancing kinetic energy. The movable tail part automatically swings under water flow, so that the resistance of the movable tail part is adjusted, and the movable tail part is stably placed on a riverbed. The bionic river sitting bottom and monitoring device is high in adaptability and suitable for comprehensive monitoring devices under various conditions of plateau rivers, mountainous rivers, urban rivers and the like in China, hydrological sediment data can be obtained more conveniently and efficiently, and the convenience and accuracy of water temperature sediment detection work are improved.

Description

technical field [0001] The invention relates to a new type of bionic river bed for hydrological sediment monitoring, especially popularized in rivers, lakes, reservoirs and coastal areas where unattended, manual monitoring is difficult, and monitoring time is relatively short. Background technique [0002] Hydrological and sediment monitoring technology is an important foundation of water conservancy and hydrological informatization. It not only provides guarantee for the safe operation of water conservancy projects, but also plays a very important role in flood prevention and mitigation, scientific scheduling of water resources, and geological and geomorphic research. Traditional hydrological monitoring instruments and equipment are designed based on a single physical principle, and do not collect multi-source information at the same time. Different instruments and equipment have their own characteristics in adaptability to riverbed composition and sediment transport intensi...

AI Technical Summary

Problems solved by technology

[0004] There are three main methods for single suspended mass measurement: the advantage of the sampler method is that it is widely accepted, time-tested, easy to use, and other methods are calibrated, but it requires post-processing, requires on-site labor, and disturbs the flow field; the advantage of the acoustic method is that It has a wide vertical range, good resolution, and no interference, but the interference factors of the backscatter signal are complex, and the signal is easily lost at high concentrations; the advantage of the laser method is that it realizes in-situ gradation measurement, and the concentration of suspended sediment does not depend on the level. Compatible, but expensive and unreliable, only suitable for small particle size range, only point measurement, disturbing the flow field

[0005] There are four main methods for single mass flow measurement: the sampler method has the advantages of being widely accepted, time-tested, and sand samples can be inspected on site, but the sampling efficiency is low and the flow field is disturbed; the pit method is more reliable when it is not silted up. Applicable to seasonal streams and ditches, not suitable for large flows, fixed locations, most of them can only be measured after floods, require on-site construction, and are expensive; the advantage of particle tracking method is that it can monitor particle trajectory, but it is limited to surface particles, most It can only be observed after the flood event, which is expensive; most of the indirect observation methods do not interfere with the flow field and have high time resolution, but in some cases the correlation between the received signal and the sediment transport rate is not good, and it has not been widely recognized and widely used

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