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Undisturbed Frozen Soil Sampling Device

A sampling device, frozen soil technology, applied in the direction of sampling device, etc., can solve problems such as sampling of undisturbed frozen soil, and achieve the effect of avoiding disturbance

Active Publication Date: 2016-03-23
CHINA AGRI UNIV
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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 a sampling device for undisturbed frozen soil, which is used to solve the problem of undisturbed frozen soil sampling

Method used

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  • Undisturbed Frozen Soil Sampling Device

Examples

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Embodiment Construction

[0019] The specific implementation manner of the invention will be further described below in conjunction with the accompanying drawings and embodiments. The following examples are only used to illustrate the present invention, but not to limit the scope of the present invention.

[0020] This example is mainly about the experimental research of taking the undisturbed frozen soil during the maximum freezing depth of the winter soil.

[0021] In this example, the end of the undisturbed frozen soil sampling device inserted into the soil is used as the lower end, and the end of the undisturbed frozen soil sampling device exposed to the ground is used as the upper end.

[0022] Such as figure 1 The undisturbed permafrost sampling device shown includes an inner tube 2 for taking soil and an outer tube 3 coaxially sleeved outside it; the outer tube 3 is a stainless steel thick tube, and its lower end edge is provided with a soil-entrying hole processed by milling. The cutting edge...

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Abstract

The present invention relates to a soil sampling apparatus, particularly to an undisturbed frozen soil sampling apparatus, which comprises a soil sampling inner tube and an outer tune coaxially sleeving outside the inner tube, wherein the lower end of the outer tube is provided with an entering-soil cutting edge opening, the inner wall of the lower end of the outer tube is provided with an annular projection, the soil sampling inner tube is a round tube formed by splicing a plurality of tube sheets having the same radius and the same length, the outer diameter of the soil sampling inner tube is larger than the inner diameter of the annular projection, the lower end of the soil sampling inner tube contacts the annular projection, and the upper end of the soil sampling inner tube is exposed outside the outer tube. According to the present invention, the problem that the sample can not be taken out due to the influence of the frost heave action effect on the moisture in the soil during the freezing period is avoided, the soil sample can be conveniently sampled without excavation of the soil sectional pit while disturbance, extrusion, compaction, pollution and man-made interference during the sampling process can be avoided to the maximal degree, and the most representative soil undisturbed generation layer sequence and the soil nature structure forms of different soil layers can be maintained.

Description

technical field [0001] The invention relates to a soil sampling device, in particular to an undisturbed frozen soil sampling device. Background technique [0002] Undisturbed soil sampling is a basic work in engineering geological exploration, environmental engineering and agricultural engineering. The undisturbed soil maintains the natural structure of the sample during the sampling process: that is, the physical properties, chemical properties, and structural characteristics of the soil sample remain unchanged during the sampling process; otherwise, the sample collected is called "disturbed soil". In the research of many fields such as soil physics, soil chemistry and soil micrology, the existence of disturbed soil is not allowed or should be avoided as much as possible. [0003] At present, the commonly used undisturbed sampling methods include the ring knife method and the undisturbed soil sampling method. Both methods are based on undisturbed soil sampling methods und...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/04
Inventor 杨培岭贺新任树梅李云开苏艳平俞昊良
Owner CHINA AGRI UNIV
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