Test device for making research on soil freezing and thawing temperature field, water migration and deformation law

A test device and temperature field technology, applied in the field of geotechnical engineering, can solve the problem of no comprehensive research test device, and achieve the effect of convenient instrument production and accurate test results

Inactive Publication Date: 2014-08-06
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the field of artificial formation freezing method research, there is no relevant test device for comprehensively studying the above-mentioned laws.

Method used

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  • Test device for making research on soil freezing and thawing temperature field, water migration and deformation law
  • Test device for making research on soil freezing and thawing temperature field, water migration and deformation law
  • Test device for making research on soil freezing and thawing temperature field, water migration and deformation law

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Embodiment

[0029] A test device for studying the temperature field, water migration and deformation law of frozen-thawed soil, the structure of which is as follows: Figure 1-4 As shown in the figure, it includes a freezing bottom plate that feeds freezing liquid into the device, erected on the freezing bottom plate, a split soil sample chamber 4 for containing soil samples, and a top cover 6 that is located on the top of the split soil sample chamber 4. Compress the soil sample cover plate that soil sample is used in split-type soil sample cavity 4, connect water supply device, add water supply connecting pipe 15 in the soil sample, and be connected to support 10 between top cover 6 and freezing bottom plate.

[0030] The material of the frozen bottom plate is high-strength aluminum alloy, which is formed by bonding the lower part 1 of the frozen bottom plate and the upper part 2 of the frozen bottom plate. The lower part 1 of the freezing base plate is oblate cylindrical, with an outer...

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Abstract

The invention relates to a test device for making a research on a soil freezing and thawing temperature field, water migration and a deformation law. The test device comprises a freezing bottom plate for feeding freezing liquid into the device, a split soil sample cavity which is arranged on the freezing bottom plate and used for storing soil samples, a top cover arranged at the top of the split soil sample cavity in a covering manner, a soil sample cover plate which is arranged in the split soil sample cavity and used for compacting the soil samples, a water replenishing connection pipe which is connected with a water replenishing device and used for adding water into the soil samples, and a bracket connected between the top cover and the freezing bottom plate. Compared with the prior art, the test device is simple in structure and convenient to operate, and a certain basis is provided for construction using an artificial ground freezing method.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a test device for studying the temperature field, water migration and deformation law of frozen-thawed soil. Background technique [0002] The artificial formation freezing method is a better formation reinforcement technology produced with the development of artificial refrigeration technology. The artificial ground freezing method is to arrange freezing pipes around the pre-reinforced soil, and through the circulation of low-temperature refrigerant in the pipes, the ground is continuously or intermittently cooled, so that the water in the ground is frozen, and the natural rock and soil are transformed into artificial frozen soil. Weak strata isolate the connection between groundwater and underground engineering, and excavation and lining are carried out under the protection of frozen walls. The artificial ground freezing method was first applied to mine excava...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
Inventor 唐益群严婧婧毛柏杨李珺肖思奇
Owner TONGJI UNIV
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