A monitoring device for a frozen soil model test and its application method
A monitoring device and model test technology, applied in measuring devices, material thermal analysis, instruments, etc., can solve the problems of long measurement time period, errors in temperature, moisture, and salt migration rules, and the inability of sensing devices to accurately measure the temperature of fixed points of soil Problems such as changes in water and salinity, to achieve the effect of accelerating the monitoring test process, simple structure, and accelerating the test process
Active Publication Date: 2021-05-25
ANHUI UNIVERSITY OF ARCHITECTURE
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Problems solved by technology
[0007] Aiming at the deficiencies of the prior art, the present invention provides a monitoring device for a frozen soil model test and its use method, which solves the problem that the traditional measurement time period is long and the sensor device cannot accurately measure the fixed point of the soil during the freeze-thaw process. Changes in temperature, moisture and salt, there are errors in the study of different points and interfaces of frozen soil samples and the overall temperature, moisture, and salt migration laws of frozen soil models
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[0029]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] see Figure 1-3 , the present invention provides a technical solution: a monitoring device for permafrost model tests, including a sample tank, the sample tank includes a sample tank outer wall 1, a sample tank inner wall 2 and a sample tank base 3, the sample tank base 3. A lifting cylinder 6 is installed at the bottom, and the outside of the lifting cylinder 6 is provided with a lifting cylinder air duct hole 7 and a lifting cylinder switch 8. The top ...
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The invention discloses a monitoring device for a frozen soil model test and a method for using the same. A lifting cylinder is installed at the bottom, and the outside of the lifting cylinder is provided with a lifting cylinder air pipe hole and a lifting cylinder switch. The top of the lifting cylinder is fixedly connected with a movable slide plate, and the inner wall of the sample tank is fixedly connected with an insulation layer. The two sides of the movable sliding plate are in contact with the inner wall of the thermal insulation layer of the sample tank, and the permafrost samples are placed on the movable sliding plate. The invention relates to the technical field of geotechnical testing and measurement. The monitoring device for the frozen soil model test and its use method solve the problem that the traditional measurement method is easy to cause measurement errors in the study of different points and interfaces of the frozen soil sample and the overall temperature, moisture and salt migration of the frozen soil model. The test process is accelerated, and the ideal freeze-thaw effect can be achieved in a short period of time.
Description
technical field [0001] The invention relates to the technical field of geotechnical testing and measurement, in particular to a monitoring device for a frozen soil model test and a method for using the same. Background technique [0002] According to statistics, 70% of the global land area has frozen soil, of which 14% is permafrost and 56% is seasonal frozen soil; my country is the third largest country in the world with permafrost, and the distribution area of permafrost is 2.068×10 6 km 2 , accounting for 21.5% of my country's land area, the distribution area of seasonal frozen soil is very wide, which is 5.137×10 6 km 2 , accounting for 53.5% of my country's land area, and the two together account for about 3 / 4 of the country's total area. The upper limit change of the permafrost subgrade is mainly caused by repeated freezing and thawing of the soil due to temperature changes, and the freezing and thawing of soil is a very A complex process that is accompanied by p...
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IPC IPC(8): G01N25/00G01N25/20G01N13/00
CPCG01N13/00G01N25/00G01N25/20
Inventor 王芳闫禹佳芦川李凯马志平陶明霞韦璐
Owner ANHUI UNIVERSITY OF ARCHITECTURE