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Moisture content dynamic testing device and moisture content testing system

A technology of dynamic testing and moisture content, applied in the field of geotechnical engineering, to achieve continuous feedback and overcome the effect of dynamic real-time detection

Active Publication Date: 2017-03-15
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still a lack of suitable devices that can dynamically and real-time measure the moisture content of the soil pressure surface during the compression process.

Method used

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  • Moisture content dynamic testing device and moisture content testing system
  • Moisture content dynamic testing device and moisture content testing system
  • Moisture content dynamic testing device and moisture content testing system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0034] Please refer to figure 1 , the embodiment of the present invention provides a moisture content dynamic testing device 100 , which includes a first squeeze plate 110 , a second squeeze plate 120 , a loading device 130 , a resistance tester 140 and a control system 150 .

[0035] The first squeeze plate 110 is the working surface of the whole device, the soil sample is placed on the first squeeze plate 110, and the bottom of the first squeeze plate 110 is connected with a loading device 130, so that the first squeeze plate 110 can be Lift up and approach the second squeeze disc 120, thereby realizing the squeeze of the soil sample. In this embodiment, the surface of the first squeeze disc 110 used to place the soil sample has a certain roughness, and the working surface of the second squeeze disc 120 used to squeeze the soil sample also has a certain roughness . In this way, it can be ensured that in the process of extruding the soil, the soil sample will be consolidate...

no. 2 example

[0053] Please refer to Figure 7 The difference between this embodiment and the first embodiment is that the first extrusion disk 110 and the second extrusion disk 120 are both circular, and the pairs of electrode holes on the first extrusion disk 110 are based on the first extrusion disk. The center of the circle of the pressure plate 110 is the center, and is arranged in a manner of radiating around the first pressure plate 110 . The electrodes 111 are disposed in the electrode holes. This radial arrangement can test the moisture content distribution of the extruded soil sample more comprehensively and accurately.

[0054] The test process is as follows: the resistance tester 140 measures the resistance values ​​of multiple rows of electrode pairs, the control system 150 collects the data, and the software system processes and fits the data. Specifically, during the testing process, the control system 150 averages the resistance measurements at multiple locations at the sa...

no. 3 example

[0058] An embodiment of the present invention also provides a moisture content testing system, including a moisture analyzer for testing the average moisture content of the soil before compression and the moisture content dynamic testing device in the first embodiment or the second embodiment. It can measure the moisture content of soil more comprehensively.

[0059] It should be noted that the above-mentioned moisture meter can be selected from other devices for measuring moisture content such as chemical moisture meters in the prior art.

[0060] During use, the average moisture value of multiple groups of soil samples to be tested before being compressed is measured by a moisture analyzer to obtain multiple groups of soil samples with known moisture content, and then use the first embodiment or the first embodiment The moisture content dynamic testing device in the second embodiment tests the resistance value of these soil samples with known moisture content, thereby the co...

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Abstract

The invention relates to the field of geotechnical engineering and provides a moisture content dynamic testing device and a moisture content testing system. The moisture content dynamic testing device comprises a first squeezing disc, a second squeezing disc, a loading device, a resistance testing instrument and a control system. The moisture content dynamic testing device is connected with the resistance testing instrument through a plurality of pairs of electrodes arranged on the first squeezing disc, so that changes of resistance in a soil body squeezing process can be fed back in real time. The moisture content of soil bodies at different positions on a squeezing surface is obtained, and real-time and continuous feedback of the moisture content in a soil body squeezing process is realized. The defect of a traditional moisture content determination device that dynamic real-time detection in the soil body squeezing process cannot be realized is overcome.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a moisture content dynamic testing device and a moisture content testing system. Background technique [0002] In the field of geotechnical engineering, the research on the consolidation and compression of soil is very extensive, and the consolidation and compression of soil is accompanied by the migration of water. Especially for the thinner weak soil in the layered foundation, in the process of being squeezed by the strata, the migration and change of its moisture content is not evenly distributed on the entire squeezed layer, resulting in the soil at different positions on the squeezed layer. There is a large difference in the degree of consolidation of the soil, which brings great obstacles to the study of the mechanical properties of the weak soil when it is squeezed. For the determination of soil moisture content, there are conventional geotechnical test methods suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04
CPCG01N27/041G01N27/048Y02A90/30
Inventor 殷勇石飞停徐桂中
Owner YANCHENG INST OF TECH
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