Device and method for measuring unfrozen-water content of soil body

A measurement device, unfrozen water technology, applied in measurement devices, material analysis by optical means, instruments, etc., can solve the problems of complicated operation and calculation, ineffective implementation, human radiation damage, etc., and achieve simple real-time performance , Improve the efficiency of temperature control and save space
CN106546557AActive Publication Date: 2017-03-29CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2017-03-29

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Abstract

The invention discloses a device and method for measuring the unfrozen-water content of a soil body. The device for measuring the unfrozen-water content of a soil body comprises a THz-TDS system, a sample mould system for loading a soil sample, a temperature control system for adjusting the soil sample temperature and a data acquisition system for acquiring the measured data of the soil sample, wherein the THz-TDS system comprises a beam splitter, a THz transmitter, a THz receiver and multiple reflectors; and the beam splitter splits laser into two beams, one for irradiating the THz transmitter to generate THz pulse, and the other one serving as probe light to pass through the THz receiver together with the THz pulse passing the soil sample. The measuring device disclosed by the invention has the characteristics of high precision, real-time property and easiness in operation.
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Description

technical field

[0001] The invention relates to a soil unfrozen water content measurement device and a measurement method, belonging to the field of soil unfrozen water content measurement. Background technique

[0002] The measurement of unfrozen water content is an important and difficult problem in the scientific research of frozen soil. Under negative temperature conditions, only part of the water in the soil undergoes phase transition and freezes, thus forming a four-phase soil of water, ice, air, and soil particles. Under negative temperature conditions, the content of water and ice has an important influence on the thermal and mechanical properties of frozen soil. It is a necessary index for thermal engineering calculation of frozen soil, and it is the leading factor in the change of mechanical properties of frozen soil. Therefore, the test and research of unfrozen water content in frozen soil have important research value and significance for the basic thermal and m...

Claims

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