Suspended sediment layered sampler and sampling method for river engineering model test

A technology of river engineering model and suspended matter, which is applied in the direction of sampling devices, etc., can solve the problems of prolonged sampling time and the inability to collect suspended matter in multiple water depths at the same time, and achieve the effects of shortening time, saving sampling effort, and flexible application

Active Publication Date: 2020-08-11
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to propose a layered sampler for suspended sediment for river engineering model tests, and a sampling method based on the layered sampler to solve the problem of not being able to simultaneously collect multiple Suspended substances in water depth lead to prolongation of sampling time

Method used

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  • Suspended sediment layered sampler and sampling method for river engineering model test
  • Suspended sediment layered sampler and sampling method for river engineering model test
  • Suspended sediment layered sampler and sampling method for river engineering model test

Examples

Experimental program
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Effect test

Embodiment 1

[0033] In this example, if Figure 1-7 As shown, a layered sampler for suspended sediment used in river engineering model tests includes three single-layer sampling structures 1, baffles 3 and crossbars 2; the single-layer sampling structure 1 is cylindrical in the middle The cuboid structure of the sampling chamber 11 has vertical grooves 12 arranged on the vertical edges of its front and rear end faces; the single-layer sampling structure 1 is vertically overlapped and combined to form a multi-layer sampling structure; the baffle plate 3 is composed of a base plate 31, two The perforated plate 32 and two non-perforated plates 33 are sequentially spliced ​​at intervals; the perforated plate 32 is provided with a circular sampling hole 321 having the same diameter as the mouth of the sampling chamber 11; the baffle plate 3 is closely attached to the multi-layer The front and rear end faces of the sampling structure are placed in the vertical groove 12; the upper ends of the fr...

Embodiment 2

[0043] In this example, if Figure 1-7 Shown, a kind of sampling method based on above-mentioned layered sampler, comprises the following steps:

[0044] 1) according to test sampling needs, select the described stratified sampler with the baffle plate 3 of 3 single-layer sampling structures 1 and 2 sampling holes;

[0045] 2) Place the layered sampler in the test river, lift the crossbar 2, open the front and rear baffles 3, and make the sampling hole 321 coincide with the sampling chamber 11;

[0046] 3) When the water flow is stable, press down the crossbar 2 to close the front and rear baffles 3 at the same time to obtain an instant water sample.

[0047] The present invention will be further described below in conjunction with a specific example.

[0048] The shape and structure of the sampler used for sampling in this embodiment are as follows: Figure 1-7 As shown, it is a three-layer suspended mass sampler. During the test, a bed of natural sand was laid according ...

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Abstract

The invention discloses a layered sampler for suspended sediment for river engineering model tests, which comprises a plurality of single-layer sampling structures, baffles and cross bars, and the single-layer sampling structure is a cuboid structure with a cylindrical sampling bin in the middle , the single-layer sampling structure is vertically overlapped and combined to form a multi-layer sampling structure, the holed plate is provided with a circular sampling hole with the same diameter as the sampling bin mouth, and the number of sampling holes in the baffle plate is less than that of the sampling bin One, the upper ends of the front and rear baffles are connected by cross bars; the present invention also discloses a method based on the above-mentioned layered sampler, which can sample the effect of multiple layers of suspended matter at one time, greatly shortening the sampling time of suspended matter in river engineering model tests. time.

Description

technical field [0001] The invention relates to the field of water conservancy experiments, in particular to a layered sampler for suspended sediment and a sampling method for river engineering model tests. Background technique [0002] Suspended mass sampler is a commonly used sediment sampler in water conservancy projects. At present, there are two types of instantaneous type and time-integrated type. Among them, the most commonly used instantaneous sampler is the horizontal sampler. The body is a cylinder, the axis is parallel to the direction of water flow, and there are covers and springs at both ends. When sampling, the two covers are opened, and when the water flow is stable, the switch is operated to close the two covers at the same time to obtain instantaneous water samples. This kind of sampler is easy to operate and has strong adaptability; there are several types of time-integrated samplers, such as pressure-regulating chamber type, leather bag type, and bottle ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/10
CPCG01N1/10
Inventor 田忠唐南波王韦许唯临刘善均张建民邓军曲景学余挺张法星
Owner SICHUAN UNIV
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