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System and method for detecting content of unfrozen water in frozen soil based on soil mass resistivity variation

A detection system and resistivity technology, applied in the field of detection system for unfrozen water content in frozen soil based on changes in soil resistivity

Active Publication Date: 2017-05-31
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to aim at the deficiencies in the above-mentioned prior art, to provide a simple structure, convenient implementation, simplification of the complex problem of unfrozen water content detection in frozen soil, accurate measurement results, strong practicability, A detection system for unfrozen water content in frozen soil based on changes in soil resistivity that is effective and easy to popularize

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  • System and method for detecting content of unfrozen water in frozen soil based on soil mass resistivity variation
  • System and method for detecting content of unfrozen water in frozen soil based on soil mass resistivity variation
  • System and method for detecting content of unfrozen water in frozen soil based on soil mass resistivity variation

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Embodiment 1

[0081] Such as figure 1 , image 3 , Figure 4 and Figure 5 As shown, the unfrozen water content detection system of frozen soil based on the change of soil resistivity in this embodiment includes a ground data transmission terminal 3, a computer 2 and a temperature and resistivity detection device 4 for placing in the soil. The temperature and resistivity detection device 4 includes a detection unit 1, the detection unit 1 includes a sleeve 1-1 and a data acquisition circuit board 1-2, and the sleeve is formed from a first sleeve integrally formed from top to bottom 1-1, the second sleeve 1-10 and the third sleeve 1-11, the outer diameter of the first sleeve 1-1 is smaller than the outer diameter of the second sleeve 1-10, the second sleeve The outer diameter of the pipe 1-10 is equal to the outer diameter of the third sleeve 1-11, the inner diameter of the second sleeve 1-10 is smaller than the inner diameter of the third sleeve 1-11, and the first sleeve 1-11 is The ou...

Embodiment 2

[0178] Such as figure 2 and Figure 6 As shown, the unfrozen water content detection system of frozen soil based on the change of soil resistivity in this embodiment is different from Embodiment 1 in that: the temperature and resistivity detection device 4 includes a plurality of detection units 1 stacked up and down , the two detection units 1 adjacent up and down are connected through the threaded connection of the first casing 1-1 and the third casing 1-11, and the rest of the structure is the same as that of the first embodiment.

[0179] The method for detecting the unfrozen water content of frozen soil based on the variation of soil resistivity in this embodiment is different from Embodiment 1 in that:

[0180] Step 1, according to the height of the frozen soil to be measured, the number of detection units 1 is selected to be multiple;

[0181] Step 2: first connect multiple detection units 1 into a whole, then put the multiple detection units 1 connected into a whole i...

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Abstract

The invention discloses a system for detecting the content of unfrozen water in frozen soil based on soil mass resistivity variation. The system comprises a ground data transmission terminal, a computer and a temperature and resistivity detecting device which is placed in a soil mass, wherein the temperature and resistivity detecting device comprises one detecting unit or multiple detection units which are vertically stacked; the detection unit comprises a sleeve and a data acquisition circuit board; the data acquisition circuit board is integrated with a data acquisition and transmission circuit and a power line; the data acquisition and transmission circuit comprises a first microprocessor, a first data memory, a first wireless communication module, a temperature measurement probe and a resistivity measurement probe. The invention also discloses a method for detecting the content of the unfrozen water in the frozen soil based on the resistivity variation. According to the system and the method, disclosed by the invention, implementation is convenient, a complex problem of detecting the content of the unfrozen water in the frozen soil can be simplified, a measurement result is accurate, the instantaneity and the integrity are good, the practicability is high, the using effect is good, and popularization and use are convenient.

Description

technical field [0001] The invention belongs to the technical field of detecting unfrozen water content of frozen soil, and in particular relates to a detection system and method for unfrozen water content of frozen soil based on changes in soil resistivity. Background technique [0002] Unfrozen water in frozen soil plays an important role in frozen soil mechanics. The unfrozen water content of frozen soil has a significant impact on the interaction between soil and pile foundations. In the study of frozen soil, the unfrozen soil The method of measuring water content has not been explained systematically and scientifically, so it is an urgent problem to be solved for academic research and engineering practice. [0003] At present, the methods for testing the unfrozen water content of frozen soil mainly include nuclear magnetic resonance method, neutron spin echo method, calorimetry method, and dielectric property method. The methods commonly used in laboratories include tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N27/04
CPCG01N27/041G01N27/048G01N33/24
Inventor 唐丽云王柯杨更社奚家米王杰邱培勇王伯超王晓刚徐屹凡
Owner XIAN UNIV OF SCI & TECH
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