River model bed load mixed sand adding device

Abstract

The invention relates to a river model bed load mixed sand adding device. The river model bed load mixed sand adding device comprises a sand adding container, a gravel mixing mechanism, a supporting frame, an even sand laying mechanism and an automatic sand conveying mechanism. The sand adding container, the gravel mixing mechanism, the even sand laying mechanism and the automatic sand conveying mechanism are sequentially arranged on the supporting frame from top to bottom. The sand adding container is of a cuboid structure, the interior of the sand adding container is hollow, the upper end of the sand adding container is open, and a bottom plate is arranged at the bottom of the sand adding container. A plurality of baffles are fixed in the sand adding container at intervals side by side. An inner cavity of the sand adding container is divided into a plurality of sand adding cavities through the baffles, and the bottom plate is provided with a plurality of discharging holes side by side. The river model bed load mixed sand adding device is high in automation degree, high in adaptability for complex test conditions and capable of automatically mixing and laying sand, saving labor and improving the test efficiency.

Description

technical field [0001] The invention belongs to the technical field of river engineering model tests of hydraulic and hydropower engineering, and in particular relates to a river engineering model moving mass mixing sand adding device. Background technique [0002] The river engineering model experiment is a means to shrink the river into a model according to the principle of similarity, and to study the changes of various relevant factors (water flow, topography) in different situations in the model, because the process of river channel deformation under natural conditions and after construction projects is abnormal Complicated, many problems of river bed deformation and river regulation are often difficult to solve directly by analytical research and calculation methods, but it may be solved directly and conveniently by using model experiments; The process of sand delivery rate converted from a similar scale is added to the model, while the sand-moving device needs to mix ...

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Problems solved by technology

[0002] The river engineering model experiment is a means to shrink the river into a model according to the principle of similarity, and to study the changes of various relevant factors (water flow, topography) in different situations in the model, because the process of river channel deformation under natural conditions and after construction projects is abnormal Complicated, many problems of river bed deformation and river regulation are often difficult to solve directly by analytical research and calculation methods, but it may be solved directly and conveniently by using model experiments; The process of sand delivery rate converted from a similar scale is added to the model, while the sand-moving device needs to mix sand and gravel of different particle sizes in a certain proportion in advance. The preparation work before the experiment is cumbersome. When the test conditions become more complicated, manual operation is required. greater demand

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