Large-buried-depth soil permeability coefficient and moisture diffusion coefficient measuring system and method

A technology of soil permeability coefficient and diffusion coefficient, which is applied in the direction of permeability/surface area analysis, suspension and porous material analysis, and measurement devices, which can solve the problem of lower accuracy of soil permeability coefficient and water diffusion coefficient, and the inability to pressurize soil samples and other issues to achieve the effect of improving accuracy

Active Publication Date: 2017-02-22
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of taking soil, because the soil body in the ring knife is not pressurized at the upper and lower ends, it is often during the soil sampling process, so that the soil obtained by sampling will expand and other deformations relative to the original depth position. Moreover, the existing The method for measuring the soil permeabil

Method used

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  • Large-buried-depth soil permeability coefficient and moisture diffusion coefficient measuring system and method
  • Large-buried-depth soil permeability coefficient and moisture diffusion coefficient measuring system and method
  • Large-buried-depth soil permeability coefficient and moisture diffusion coefficient measuring system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0058] refer to figure 1 , shows a flow chart of steps of a method for measuring the permeability coefficient and water diffusion coefficient of large buried depth soil of the present application.

[0059] Step 101, using a large buried depth soil sampling device to sample the large buried deep soil to obtain a soil sample consistent with the inner volume of the transparent plexiglass soil column.

[0060] Compared with collecting soil samples by using traditional ring cutters, in the embodiment of the present invention, in order to ensure that the finally obtained soil samples can be maintained at the pressure state at the preset sampling depth, a drill bit containing transparent plexiglass soil columns is used to sample from the preset The soil was collected at the depth, and when the drill bit was taken out of the soil, the soil body of the upper and lower sections of the transparent plexiglass soil column was cut to obtain a soil sample consistent with the inner volume of ...

Embodiment 2

[0095] refer to figure 2 , shows a flow chart of steps of a method for measuring the permeability coefficient and water diffusion coefficient of large buried depth soil of the present application.

[0096] Step 201, put the transparent plexiglass soil column into the drill bit through the opening on the side of the drill bit, and seal the opening with a cover plate corresponding to the opening.

[0097] like Figure 1A The schematic diagram of the drill bit structure, the drill bit includes a drill bit inner layer 6 and a drill bit outer layer 5; an opening and a cover plate matching the opening are provided on either side of the drill bit inner layer 6 and the corresponding side of the drill bit outer layer 5; and the size of the opening Greater than or equal to the vertical maximum section of the transparent plexiglass soil column 7. Then the transparent plexiglass soil column can be put into the drill bit through the opening on the side of the drill bit, and the opening ...

Embodiment 3

[0130] refer to image 3 , shows a schematic structural diagram of a system for measuring the permeability coefficient and water diffusion coefficient of large buried depth soil of the present application.

[0131] The system 30 for measuring the permeability coefficient and water diffusion coefficient of large buried depth soil in the embodiment of the present invention includes a sampling module 301 , a sample preservation module 302 and a measurement module 303 .

[0132] Wherein, the sampling module 301 is used to sample the soil at a large buried depth to obtain a soil sample consistent with the inner volume of the transparent plexiglass soil column.

[0133] like Figure 2C It is a schematic structural diagram of a sampling module in an embodiment of the present invention. include:

[0134] The handle 1 is a hollow structure, and a capstan 4 is arranged above the handle and in the hollow structure.

[0135] The drill bit is a hollow circular cylindrical structure wit...

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Abstract

The invention discloses a large-buried-depth soil permeability coefficient and moisture diffusion coefficient measuring system and method and relates to the technical field of agricultural water-soil engineering. The system comprises a sampling module, a sample preservation module and a measuring module. The sampling module is used for sampling large-buried-depth soil to obtain a soil sample with the volume consistent with the inside volume of a transparent organic glass soil pillar. The sample preservation module is used for preserving the transparent organic glass soil pillar containing the soil sample through a transparent container and pressurizing the soil sample in the transparent organic glass soil pillar through two water-permeable stones connected with the upper section and the lower section of the transparent container respectively. The measuring module is used for detecting the permeability coefficient and the moisture diffusion coefficient of the tested soil after acquiring a preset volume of tested soil from the transparent organic glass soil pillar according to containing marks on the transparent organic glass soil pillar. The advantages that the state of the soil sample is effectively kept, and then the accuracy of the measured permeability coefficient and moisture diffusion coefficient of the soil is improved are achieved.

Description

technical field [0001] The invention relates to the technical field of agricultural water and soil engineering, in particular to a large buried depth soil permeability coefficient and water diffusion coefficient measurement system and a large buried depth soil permeability coefficient and water diffusion coefficient measurement method. Background technique [0002] In the field of agricultural water and soil engineering technology, soil sampling is often required for related studies such as soil hydrological processes. For example, for the study of soil hydrological processes, soil physical parameters and their hydrodynamic characteristic parameters are important basis. In order to obtain soil physical parameters and their hydrodynamic characteristic parameters, the original soil sampling and laboratory measurement are generally used. However, with the large-scale exploitation of groundwater, the buried depth of the groundwater level in the North China Plain dropped from 2 ...

Claims

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Application Information

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IPC IPC(8): G01N13/04G01N15/08
CPCG01N13/04G01N15/0806G01N15/0826
Inventor 王英龚家国赵勇冶运涛尚毅梓丁相毅顾金普
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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