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Real-time test probe and device for water content of triaxial sample of unsaturated soil

A triaxial sample and real-time testing technology, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems that the water content of the sample cannot be tested in the triaxial test, the damage of the triaxial sample, and the influence of the test parameters, etc. To achieve the effect of solving the problem that cannot be tested in real time

Active Publication Date: 2016-11-23
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the vast majority of TDR probes are in the form of probes, which need to be inserted into the soil. Obviously, this type of probe cannot be used to test the water content of the sample in the triaxial test, because the probe probe will affect the three Shaft specimens cause damage, which directly affects the acquisition of its test parameters

Method used

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  • Real-time test probe and device for water content of triaxial sample of unsaturated soil
  • Real-time test probe and device for water content of triaxial sample of unsaturated soil
  • Real-time test probe and device for water content of triaxial sample of unsaturated soil

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited thereby.

[0036] Such as Figure 1~3 As shown, the TDR probe consists of three parts: the flexible base layer 1, the flexible conductor 2 and the connector 3, wherein the flexible base layer 1 is a polyimide film insulation layer, and the flexible conductor 2 is a long tube made of copper, stainless steel or other metal films. strip conductor. The connector 3 is a radio frequency connector.

[0037] The flexible base layer 1 and the flexible conductor 2 are directly integrated by gluing or immersion gold. The thickness of the strip-shaped conductor is 0.1-0.5 mm, the width is 1-5 mm, and the length is 10-500 mm. There are three flexible conductors 2, which are distributed on the flexible base layer 1 in such a way that both ends are aligned, distributed in parallel, and the distance between them is equal...

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Abstract

The invention discloses a TDR (time domain reflection) technology based real-time test probe and device for water content of a triaxial sample of unsaturated soil. The probe and the device can be used for testing the local water content of the sample in a triaxial test of the unsaturated soil in geotechnical engineering. The probe comprises a base layer (1), multiple flexible conductors (2) and a connector (3), has certain flexibility, can be horizontally mounted on the cylindrical sample for the triaxial test of geotechnical engineering in a winding manner, is located between the triaxial sample (10) and a rubber membrane (4), is connected with a TDR tester (9) through a wire (8) and can monitor the water content of a mounting part at any time in a triaxial test process of the unsaturated soil. The problem that the water content of a local position cannot be acquired in the triaxial test process of the unsaturated soil in the geotechnical engineering is solved.

Description

technical field [0001] The invention relates to a real-time test device for soil water content, in particular to a real-time test probe and test device for the water content of unsaturated soil triaxial samples based on time domain reflection (TDR) technology. Background technique [0002] In geotechnical engineering testing, triaxial test is an important test method to obtain the shear strength of rock and soil. The shear strength of rock and soil is closely related to the degree of consolidation of the triaxial sample, so the acquisition of the water content of the sample has important engineering significance. As far as the current test methods are concerned, the content of the triaxial sample The water content can only be obtained before putting it into the base or after the test, and there is no way to directly determine the water content in the middle of the test, especially in the triaxial test of unsaturated soil, it is possible that the upper and lower parts of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/00
CPCG01N23/00
Inventor 陈仁朋罗宏洪鹏云程威鲁立
Owner HUNAN UNIV
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