A experimental device for researching the scaling effect of a physical model of river water environment

Abstract

The invention discloses a river water environment physical model scale effect research test device. The device comprises a scaling system, a circulation system and a measurement and control system, wherein the scaling system comprises side walls, a width adjustment gate, a clamping plate frame, a rail, a bidirectional telescopic rod, a dual-slot gear box and the like; the circulation system comprises a water collecting tank, a water return pipeline, a water pump, a water feeding pipe, a water box and a flow stabilization cover; the measurement and control system comprises a triangular water measurement weir, an ADV three-dimensional flow velocity meter, a high-frequency digital camera, a water quality sensor and a data processor. According to the device, the three-dimensional scale of a model is scaled randomly by the fractal and the recombination of the side walls; riverway forms and boundaries are emulated by utilizing side wall bending and riverbed change; the device has an ingenious design and has the advantages of fast transformation, high efficiency, obvious scale mesoscopic effect and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental hydraulic tests, and in particular relates to a research test device for the scaling effect of a physical model of river water environment. Background technique [0002] A river is a complete continuum, with its upstream, downstream, left and right banks forming a complete system. A highly connected river is very important for the circulation of matter and energy and the ecological balance of the water environment. The construction of water conservancy projects can meet human needs for water supply, flood control, power generation, irrigation, tourism, etc., but while promoting the service functions of rivers, it also produces certain negative effects, causing various responses to the river water environment and affecting Health of river ecosystems. If a dam is built, a reservoir area will be formed on the dam, the water body will change from moving water to still water, the increase in wat...

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Problems solved by technology

[0008] Purpose of the invention: In order to overcome the adverse effects of the scale effect of the existing physical model of the river water environment on the test, the present invention provides a research and test device for the scale effect of the physical model of the river water environment, so as to realize the free scaling of the physical model of the river water environment and the smoothness of the wall surface. It has multiple purposes such as convenient roughness adjustment, realistic imitation of riverbed bottom shape, and convenient monitoring of environmental factors. It is used to reveal the mesoscopic impact mechanism of the scale effect on the physical model test of river water environment, and solve the problem of high cost and long cycle of existing test models. , large engineering volume and difficult to study the scale effect

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