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Distributed sand feeding system and method for suspended sediment model test

A model test and sand suspension technology, which is applied in the hydraulic model and other directions, can solve the problem that it is difficult to meet the requirements of timely changes in the amount of sand added, and achieve the effect of reducing work intensity and high control accuracy

Inactive Publication Date: 2009-05-27
SHANGHAI ESTUARINE & COASTAL SCI RES CENT
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Problems solved by technology

Therefore, even if the automatic sand filling system with a single execution unit is converted into a multi-execution system, it is difficult to meet the requirements of the multi-section suspended sand model test for the timely change of the sand addition amount at each section

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  • Distributed sand feeding system and method for suspended sediment model test
  • Distributed sand feeding system and method for suspended sediment model test
  • Distributed sand feeding system and method for suspended sediment model test

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Embodiment Construction

[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0024] Referring to Fig. 1, what this figure reflects is one aspect of the present invention, namely the block diagram of the suspended sand model test distributed sand adding system. In order to realize the multi-section suspended sand model test, this embodiment provides four sand throwers 8, which can simulate four sections.

[0025] The mixing tank 1 has a large capacity and is installed outdoors to prepare and accommodate muddy water with sand. The mixing tank 1 is equipped with a motor-driven stirring device to keep the sand content (concentration) of the muddy water in the mixing tank 1 at a basic level. Constant, so that the model sand in the stirring tank 1 will not settle, making the concentration of the muddy water unstable, resulting...

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Abstract

The invention provides a sand feeding system and a sand feeding method for use in a river sediment model experiment. The system comprises a transducer controlled by a computer, changes the outflow of a sand slinging machine by changing the frequency of the transducer and feeds sand automatically to a plurality of model cross sections under the control of the computer respectively. The sand feeding device can meet requirements of suspended sediment experiments on the similarity of the simulation of a sediment concentration field. Practical applications show that the sand feeding system and the sand feeding method have good effect and promotional value.

Description

technical field [0001] The invention relates to a system and a method for simulating a sediment concentration field in a river engineering model suspended sediment test, in particular to a distributed simulation method and system for a multi-section sediment field of a large-scale tidal river engineering model. Background technique [0002] The sand adding methods of the suspended sediment test of the river engineering model can be divided into two types: artificial sand adding and automatic control. [0003] Artificial sand filling is to open a certain number of orifices of different sizes on the sand circulation pipe, and control the amount of sand added to the model by manually adjusting the opening and combination of each orifice. This method not only has low precision in Gaza, but also suffers from many human interference factors. Especially in the tidal river engineering model, the amount of sand added to the section is required to change in time with the tidal curren...

Claims

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Application Information

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IPC IPC(8): E02B1/02
Inventor 吴国平马燕张宏伟
Owner SHANGHAI ESTUARINE & COASTAL SCI RES CENT
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