Adaptive bed load sampling device and transport rate measuring method

A sampling device and self-adaptive technology, applied in the sampling device and weighing by removing a certain component, can solve the problems of inaccurate sampling and inability to adapt to the single-width sediment transport rate due to unstable placement

Pending Publication Date: 2019-01-04
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an adaptive mass-moving sampling device and a method for measuring sand delivery rate, so as to solve the problem that the existing sampling devic

Method used

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  • Adaptive bed load sampling device and transport rate measuring method
  • Adaptive bed load sampling device and transport rate measuring method
  • Adaptive bed load sampling device and transport rate measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Please refer to figure 1 The shown adaptive mass sampling device 100 includes: an adaptive support frame 10 and a sampling net bag 20 . The sampling net bag 20 is arranged on the bottom of the self-adaptive support frame 10, and is used for collecting the moving matter. The adaptive support frame 10 includes a first support plate 101 , a second support plate 102 , a first connection plate 103 , a second connection plate 104 and a mesh soft bottom plate 105 .

[0032] Please refer to figure 1 , the first supporting plate 101 and the second supporting plate 102 are parallel to each other, the first connecting plate 103 and the second connecting plate 104 are parallel to each other, and the mesh soft bottom plate 105 is respectively connected to the bottom of the first supporting plate 101 and the second supporting plate 102 . The first connecting plate 103 and the second connecting plate 104 are successively arranged at intervals between the first supporting plate 101 ...

Embodiment 2

[0037] A method for measuring the sediment transport rate of moving mass, the above-mentioned adaptive mass sampling device 100 performs sampling and then calculates the sand transport rate, which includes the following specific steps:

[0038] (1) Place the bottom of the self-adaptive mass sampling device 100 underwater, keep the self-adaptive support frame 10 upright, and keep the sampling inlet 106 and the sampling net bag 20 of the self-adaptive support frame 10 to be located in the water, while the sampling inlet 106 is located The plane is perpendicular to the direction of water flow;

[0039] (2) Adjust the inclination angle of the adaptive support frame 10 according to the slope of the river bed, so that the bottoms of the first support plate 101 and the second support plate 102 of the adaptive support and the mesh soft bottom plate 105 are all attached to the surface of the river bed, and then fixed Adaptive support frame 10;

[0040] (3) Read the angle α between the...

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Abstract

The invention discloses an adaptive bed load sampling device and a transport rate measuring method, and belongs to the technical field of bed load sampling. An adaptive supporting frame with a parallelogram structure is formed by a first supporting plate and a second supporting plate which are parallel as well as a first connecting plate and a second connecting plate which are parallel, and by means of rotational connection between the first connecting plate and the second connecting plate as well as rotational connection between the first supporting plate and the second supporting plate, a square door with fixed size of an existing sampler is transformed into a square door with the opening size adjustable randomly, so that the sampling device adapts to river beds with different transversegradients due to bed surface deformation; meanwhile, width of a sampling inlet can be accurately measured by an angle measuring plate which penetrates the second connection plate and is arranged on the first supporting plate, and measurement is quite convenient and simple. On the premise of adapting to the riverbeds with different transverse gradients, the transverse gradient values of the riverbeds can be determined conveniently and quickly, and the method is accurate and convenient for measurement of bed load transport rate in different positions.

Description

technical field [0001] The invention relates to the technical field of mass displacement sampling, in particular to an adaptive mass displacement sampling device and a method for measuring sediment transport rate. Background technique [0002] Accurate measurement of sediment transport rate is the basis for carrying out research on the movement of sediment. The sampler method is to place a mass sampler directly on the bed surface to sample the moving mass particles. The sampler method is still one of the most direct and commonly used methods. [0003] The traditional mass sampler consists of a front part and a rear part, the front part is composed of a fixed-width square opening, and the rear part is a net-like collecting net. When the sampler is placed on the bed, the moving mass particles will enter the rear collection net through the front port. In actual operation, when the sampler is placed, start timing, collect the moving particles that enter the sampler within a ce...

Claims

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Application Information

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IPC IPC(8): G01N1/20G01N5/04
CPCG01N1/20G01N5/04Y02A90/30
Inventor 曹文洪刘春晶丁兆亮鲁婧谷蕾蕾孙雪岚张治昊胡健关见朝王玉海朱毕生张磊赵志文赵杰魏向阳
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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