Automatic sand adding device for tidal estuary sediment physical model

Abstract

The invention relates to the technical field of water conservancy experiments, and provides an automatic sand adding device for a tidal estuary sediment physical model. The tidal estuary sediment physical model comprises a model riverway, and a model estuary is arranged on the downstream portion of the model riverway. The automatic sand adding device comprises a clear water pond, a sand supply pond and a terminal device. The clear water pond and the sand supply pond are each provided with an output pipeline. A sand adding pipe is arranged at the tail end formed after the output pipelines are gathered. The clear water pond and the sand supply pond are each provided with a flow control structure. An online turbidimeter is arranged on an outlet of the sand adding pipe. The online turbidimeter and the flow control structures are all controlled by the terminal device. The automatic sand adding device monitors the sand content in the model riverway in real time, the sand content of incoming running water is removed from the rating curve sand adding amount, the sand adding mount is made to meet experiment requirements, and experiment precision is improved. When sand does not need to be added, the terminal device controls the water to flow out of a sand adding hole of the sand adding pipe continuously, and the function of preventing the sand adding pipe from being blocked can be achieved.

Description

technical field [0001] The invention relates to the technical field of water conservancy experiments, in particular to an automatic sand filling device for a physical model of sediment in a tidal estuary. Background technique [0002] In the field of studying water flow and sediment movement, river simulation is a common experimental method, in which the river engineering simulation experiment uses the knowledge of river dynamics, and is carried out in the laboratory on natural rivers or in the presence of hydraulic structures. Simulation to study the actual river structure, river bed evolution, engineering scheme effects, etc. [0003] In river engineering model tests, the problem of suspended sand and sand adding is often involved. In the prior art, sand is added to the river channel according to the rate-defined sand-adding curve, but because the model test generally uses circulating water, after the model test reaches a certain period, the water flow in the direction of...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an automatic sanding device for a physical model of sediment in a tidal estuary, aiming to solve the problem that during the existing river engineering model test, as the experiment progresses, the sediment content will exceed a predetermined value, resulting in a decrease in the accuracy of the experiment

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