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Geo-technical frozen soil frost heave experiment machine

A frost heave test and frozen soil technology, applied in the field of soil freeze-thaw test system, can solve the problem of not taking into account the factors of deep soil ground pressure, and achieve the effects of poor thermal conductivity, mitigation of impact, and guarantee of reliability and performance.

Inactive Publication Date: 2016-02-24
TIANJIN GANGYUAN TEST INSTR FACTORY
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  • Abstract
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Problems solved by technology

Previously, people studied the physical properties of deep frozen soil, all under artificially set conditions, but did not take into account the ground pressure factor of deep soil. In order to truly reflect the physical properties of frozen soil under different ground pressure values ​​and the relationship between ground pressure and physical properties of frozen soil

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  • Geo-technical frozen soil frost heave experiment machine

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Embodiment Construction

[0020] 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.

[0021] see figure 1 , the present invention provides a technical solution: a geotechnical frozen soil frost heaving test machine, comprising an incubator 11; the incubator 11 includes a first insulated chamber A and a second insulated chamber B;

[0022] The inner wall of the first heat preservation chamber A is provided with a heating device 9 and a refrigeration device 20; a bottom plate 13 is installed in the first heat preservation chamber A, and the organ...

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Abstract

The invention discloses a geo-technical frozen soil frost heave experiment machine. The experiment machine comprises the an insulation can; the insulation can comprises a first insulation chamber and a second insulation chamber; a heating device and a refrigeration apparatus are arranged on an inner wall of the first insulation chamber; a base plate is arranged in the first insulation chamber, an organic glass cylinder is arranged on the base plate; a top board is arranged on the upper end of the organic glass cylinder, a pressurization apparatus is arranged on the top board; several water tanks are arranged in the top board, externally connected cold bath is connected with the water tanks through thermotropic circulation solution inlet / outlet pipelines; a pressure transducer is arranged in the organic glass cylinder; through combination of a load transducer and a measuring cylinder, data acquisition for water-absorbing capacity and water-discharge capacity during a determination test process can be determined, change of water volume can be detected by the load transducer, and can be displayed by a data collector, the data is stored by an instrument, so that real-time change of water-absorbing capacity and water-discharge capacity of frozen soil during a freeze thawing process can be obtained.

Description

technical field [0001] The invention relates to a soil freeze-thaw test system, which is a field of test equipment for automatically detecting the mutual influence and relationship between temperature, moisture, pressure and displacement of seasonal frozen soil and deep soil during the freeze-thaw process, specifically The utility model relates to a geotechnical frozen soil frost heaving test machine. Background technique [0002] Seasonally frozen soil refers to the soil (rock) whose surface layer is frozen in winter and completely melted in summer, including seasonally frozen layer and seasonally thawed layer (also called active layer). When the seasonal frozen layer is formed in winter, as the freezing front moves from top to bottom, the water in the soil migrates to the freezing front and accumulates ice (see ), and the ice layer and ice lens are mainly concentrated in 2 / 3 to 1 / 2 position. The volume of the frozen soil increases, and the resulting frost heave can caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
CPCG01N25/00
Inventor 解海旺李辉代飞
Owner TIANJIN GANGYUAN TEST INSTR FACTORY
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