An artificial one-way freezing and layering sample preparation device suitable for high water (ice) content frozen soil

A layered sample preparation and frozen soil technology, which is applied in the field of artificial one-way freezing layered sample preparation devices

Active Publication Date: 2015-09-23
NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
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Problems solved by technology

[0004] In order to overcome the shortcoming of the artificial preparation technology of above-mentioned existing high water content (ice) content permafrost, the object of the present invention is to provide a kind of artificial unidirectional freezing layered sample preparation device applicable to high water content (ice) content permafrost

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  • An artificial one-way freezing and layering sample preparation device suitable for high water (ice) content frozen soil
  • An artificial one-way freezing and layering sample preparation device suitable for high water (ice) content frozen soil
  • An artificial one-way freezing and layering sample preparation device suitable for high water (ice) content frozen soil

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Embodiment Construction

[0013] The thermistor temperature sensor used in the present invention is composed of a thermistor and a needle-shaped pressure-resistant steel sleeve, and its lead wire is a two-wire system; Its dimensions are: sensor outer diameter 3.0mm, length 15.0mm, lead wire length 1.0-3.0m; its model is: small high-precision thermistor temperature sensor , produced by the State Key Laboratory of Frozen Soil Engineering, Institute of Cold and Arid Region Environment and Engineering, Lanzhou Chinese Academy of Sciences.

[0014] The technical scheme of the present invention will be further described below in conjunction with the accompanying drawings:

[0015] see Figure 1-3 , an artificial unidirectional freezing and layering sample preparation device suitable for high water (ice) content permafrost, mainly composed of cold bath 1, cooling liquid circulation pipeline 2, square cooling coil 3, aluminum plate 4, epoxy resin test A sample cylinder 6, a sample 8, a sample preparation mol...

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Abstract

The invention discloses a manual unidirectional freezing layered sample preparation device suitable for high water (ice) content frozen earth. The device is composed of three parts, namely a temperature control system, a layered sample loading system and a thermal insulation box, wherein the temperature control system comprises a cold bath for providing cold energy and pipelines for circulation of a cooling liquid, and further comprises a thermal resistor temperature sensor and a temperature regulation and control unit; the layered sample loading system is composed of a high heat-conducting aluminum baseplate, release filter paper, a thermal insulation epoxy resin sample sleeve, an epoxy resin top cover and a sample preparation die. The temperature of the baseplate of the layered sample loading system can be regulated and controlled through utilization of the temperature control system and the thermal insulation box, and layered sample loading is performed at the upper end opening of the sample preparation die, so that manual unidirectional freezing layered sample preparation can be realized. Through adoption of the device, the natural formation process of the ice and the consistency of the sample structure can be ensured during manual preparation of the high water (ice) content frozen earth sample, and thus reliable sample bases can be provided for experimental research of the mechanical properties of the high water (ice) content frozen earth.

Description

technical field [0001] The invention relates to an artificial one-way freezing and layering sample preparation device suitable for high water (ice) content frozen soil, mainly used for high water (ice) content (soil and water mixture in fluid flow under melting conditions) in mechanical testing of frozen soil. Plastic state) artificial preparation of frozen soil samples. Background technique [0002] Due to the economic development of cold regions and the guidance of engineering practice, permafrost scholars have carried out a lot of in-depth research on the mechanical properties of frozen soil, and explained the change mechanism of its mechanical properties from the micro level, but these works mainly focus on Frozen soil with low water content (ice), that is, the total mass water content in the frozen soil body is less than or equal to the saturation value. In comparison, there are few discussions on permafrost with high water content (ice) whose total water content ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
Inventor 马巍张淑娟孙志忠杜玉霞杜海民
Owner NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
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