Riverway sediment undisturbed sampler and sampling method

A technology of river bottom mud and sampler, which is applied in the direction of sampling devices, etc., can solve the problems of bottom mud layer structure damage, complex structure, low work efficiency, etc., and achieve the effect of reducing side resistance, simple device structure and easy operation

Pending Publication Date: 2020-11-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the above-mentioned sampler is used for mud extraction, the original layered structure of the bottom mud will be destroyed, so that the layered structure analysis of the river bottom mud cannot be carried out; at the same time, due to the complicated structure of the above-mentioned sampler, it is not easy to carry , so sampling with the above-mentioned sampler will lead to low work efficiency, time-consuming and labor-intensive, and damage to the original layered structure of the sediment

Method used

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  • Riverway sediment undisturbed sampler and sampling method
  • Riverway sediment undisturbed sampler and sampling method
  • Riverway sediment undisturbed sampler and sampling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like figure 1 , figure 2 , image 3 , Figure 4 Shown:

[0037] An undisturbed sampler for river bottom mud comprises a sampling box 1 and a lifting member 2 fixed on the upper end of the sampling box 1 .

[0038] The cross-section of the sampling box 1 is square, and a through cavity for accommodating sediment is formed in the sampling box 1 . The top opening of the sampling box 1 is provided with a box cover 3 , and the box cover 3 is interference-connected to the top opening of the sampling box 1 . During the sampling process, due to the existence of the box cover 3, the bottom mud will not sink after filling the cavity, and the sampling is finished.

[0039] The pulling member 2 includes two ring-shaped handles 10 respectively fixed on opposite sides of the upper part of the sampling box 1 and a hemp rope 11 whose ends tie the two ring-shaped handles 10 together. The lifting part is used to pull the sampler and control the lowering and lifting of the sampler....

Embodiment 2

[0049] This embodiment is improved on the basis of Embodiment 1.

[0050] like figure 1 , figure 2, Figure 4 , Figure 5 Shown:

[0051] like figure 1 and image 3 As shown, a kind of channel bottom mud sampler in its original state, the edges of the first bottom window 6-1 and the second bottom window 6-2 are broken lines. When both the first bottom window 6-1 and the second bottom window 6-2 are in a horizontal state, that is, when they are rotated to the position of the stopper, the fold lines of the two windows touch to seal the bottom opening. When both the window piece 6-1 and the second bottom window piece 6-2 are attached to the inner wall of the diverging section 5, the tip of the edge of the folding line forms a force bearing part.

Embodiment 3

[0053] In this embodiment, on the basis of Embodiment 1, the counterweight is further described.

[0054] like figure 1 , figure 2 , Figure 4 , Image 6 Shown:

[0055] An undisturbed sampler for river bottom mud, in order to increase the counterweight effect, the number of counterweights is 4, and the 4 counterweights are arranged symmetrically in pairs on the four sides of the sampling box.

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Abstract

The invention discloses a riverway sediment undisturbed sampler, and the undisturbed sampler comprises a sampling box body, a diverging section, a bottom window and a balancing weight, wherein the sampling box body and the diverging section are of an integrally-formed cuboid cylindrical structure, the bottom window seals an opening in the bottom end of the diverging section after being closed, andthe bottom window is composed of a first bottom window piece and a second bottom window piece; the first bottom window piece and the second bottom window piece are rotationally connected with the left side and the right side of the bottom end of the diverging section through hinges respectively, baffles are arranged on the other two sides of the bottom end of the diverging section respectively, and the balancing weight is arranged on the side face of the cuboid sampling box body. The riverway sediment original state sampler has the advantages that the structure is simple, the operation is convenient, the stratified structure of sediment cannot be damaged during sampling, and the like.

Description

technical field [0001] The invention relates to the technical restoration field of water environment, in particular to an undisturbed sampler and sampling method for river bottom mud. Background technique [0002] When analyzing the water quality of river water, the staff usually detect the sediment of the river channel. The main contents of the detection include heavy metals or inorganic non-metallic substances, toxic substances, moisture content, organic matter and pH. At the same time, there are still problems that need to be studied Case. The Chinese patent document whose publication number is CN202372378 discloses a deep-water bottom mud sampler, which includes a left half grab, a right half grab and a grab support mechanism; the grab support mechanism includes a support rod, a slider , the base, the right hook and the left hook; the left hook and the right hook are respectively hinged with the two side walls of the slider, and their lower ends can be respectively hook...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/12
CPCG01N1/12
Inventor 孙井梅李学武刘晓朵侯波
Owner TIANJIN UNIV
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