CN109580703A - Soil body freezing point measuring system and soil body freezing point measurement method - Google Patents
Soil body freezing point measuring system and soil body freezing point measurement method Download PDFInfo
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- CN109580703A CN109580703A CN201910073667.7A CN201910073667A CN109580703A CN 109580703 A CN109580703 A CN 109580703A CN 201910073667 A CN201910073667 A CN 201910073667A CN 109580703 A CN109580703 A CN 109580703A
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- 239000002689 soil Substances 0.000 title claims abstract description 106
- 238000007710 freezing Methods 0.000 title claims abstract description 44
- 230000008014 freezing Effects 0.000 title claims abstract description 44
- 238000000691 measurement method Methods 0.000 title claims description 6
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 238000007405 data analysis Methods 0.000 claims abstract description 36
- 238000005057 refrigeration Methods 0.000 claims abstract description 26
- 239000000523 sample Substances 0.000 claims abstract description 17
- 239000003507 refrigerant Substances 0.000 claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000005070 sampling Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/04—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of melting point; of freezing point; of softening point
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention is suitable for building technical field, a kind of soil body freezing point measuring system is provided, including the probe unit for being inserted into inside soil body to be measured, refrigeration unit, data analysis unit, temperature measuring unit；Probe unit is equipped with the first closed cavity, the liquid outlet and inlet of refrigeration unit are connected with the first cavity, refrigeration unit recycles in the first cavity for controlling refrigerant, temperature measuring unit is fixedly mounted on the detection unit, temperature measuring unit connects data analysis unit, temperature measuring unit is used to acquire the temperature value of the soil body, and the temperature value of acquisition is sent to data analysis unit, and data analysis unit analyzes temperature value.This system structure is simple, small in size, easy to carry to be tested to scene, does not need to remold the soil body sampling, the soil body of reset condition is tested in realization, improves the accuracy of test.
Description
Technical field
The invention belongs to building technical field more particularly to a kind of soil body freezing point measuring system and soil body freezing point measurement sides
Method.
Background technique
With the development of economic technology, the development and utilization of the underground space become mainstream development trend, the exploitation of the underground space
It is a kind of important means for solving current census's congestion problem and traffic blocking problem and shortening region distance.
Freezing process has significant technical advantage and biggish as a kind of reinforcing engineering method for being applied to underground space development
Economic advantages.Construction freezing method is applied to coal industry, mainly freeze sinking at first, and achieve more research at
Fruit, it is perfect with construction freezing method technology, it is now widely used for the urban construction of the region of FuShui such as coastal area.Different soil
Body freezing temperature is different, needs the high-precision soil body freezing point data when carrying out Design of Reinforcement using freezing process, guarantees to freeze
Frozen wall thickness reaches design value within the scope of the freeze-off time of design when construction, forms effective water-protected enclosure layer, littoral
Area's salt amount in strata is often higher, causes soil body freezing point lower, it is therefore desirable to measure soil body freezing temperature.
Soil body freezing point measuring device is complicated at present, and volume is larger, is merely able to be sampled the soil body to be measured, takes back laboratory
It is tested, can not be tested at the scene.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of soil body freezing point measuring system and soil body freezing point measurement method, with
Solve the problems, such as that soil body freezing point test equipment is complicated, bulky in the prior art.
In order to solve the above technical problems, first embodiment of the invention provides a kind of soil body freezing point measuring system, including with
In the probe unit, the refrigeration unit, data analysis unit, temperature measuring unit that are inserted into inside soil body to be measured；
The probe unit is equipped with the first closed cavity, and the liquid outlet and inlet of the refrigeration unit are with described the
The conducting of one cavity, the refrigeration unit is for controlling refrigerant in the first chamber body-internal-circulation, the fixed peace of the temperature measuring unit
On the probe unit, the temperature measuring unit connects the data analysis unit, and the temperature measuring unit is for acquiring the soil body
Temperature value, and the temperature value of acquisition is sent to the data analysis unit, the data analysis unit carries out temperature value
Analysis.
Further, the probe unit includes tube body, and one end of the tube body is equipped with taper bit, other end installation
Have a sealing-plug, the tube body, the taper bit and the sealing-plug form first cavity, the sealing-plug be equipped with into
Liquid mouth and liquid outlet, the inlet on the sealing-plug connect the liquid outlet of the refrigeration unit, go out liquid on the sealing-plug
Mouth connects the inlet of the refrigeration unit, and the temperature measuring unit is fixedly mounted on the outer surface of the tube body.
Further, the temperature measuring unit includes annulus, and the annulus is socketed on the outer surface of the tube body, the ring
It taking and is equipped with several temperature measuring mechanisms, each temperature measuring mechanism includes being mounted on the insulated shell that the second cavity is had on the annulus,
Be inlaid with heat carrier in the insulated shell, the heat carrier runs through the insulation shell, second inside cavity be equipped with it is described
The temperature sensor of heat carrier contact, the temperature sensor in each temperature measuring mechanism are all connected with the data analysis unit.
Further, second inside cavity is filled with heat-insulating material.
Further, the insulating materials is extrusion molding polystyrene polyfoam.
Further, the insulated shell is made for organic glass.
Further, the refrigeration unit includes cryostat machine, the first liquid pipe and the second liquid pipe, one end of first liquid pipe
The liquid outlet of the cryostat machine is connected, the other end of first liquid pipe passes through the inlet on the sealing-plug and extends to and leans on
The position of the nearly taper bit, is equipped with gap, second liquid between the end and the taper bit of first liquid pipe
One end of pipe connects the inlet of the cryostat machine, the other end of second liquid pipe pass through liquid outlet on the sealing-plug with
The first cavity conducting.
Further, the outer surface of the tube body is equipped with channel, between the data analysis unit and the temperature measuring unit
Connecting line be located in the channel.
Further, the data analysis unit includes processor, loader and display, and the processor is separately connected
The loader, the display and temperature measuring unit.
The second embodiment of the present invention provides a kind of soil body freezing point measurement method, comprising:
Tube body is inserted into soil body predetermined depth to be measured, cryostat machine is opened and cools down to the soil body；
Temperature measuring unit acquires the temperature value of the soil body, and the temperature value of acquisition is sent to data analysis unit；
The temperature value that data analysis unit acquires temperature measuring unit is handled, and generates soil temperature change curve.
The beneficial effects of adopting the technical scheme are that the present invention devises a kind of soil body freezing point measurement system
System when on-the-spot test, probe unit is inserted into the soil body in region to be measured, the temperature measuring unit installed on the detection unit is inserted together
Enter in the soil body to be measured, open refrigeration unit, refrigeration unit controls the first chamber body-internal-circulation of refrigerant on the detection unit, passes through
Heat-conduction principle makes the cooling soil body around probe unit, and temperature measuring unit is in real time acquired the temperature of the soil body, and will acquisition
Temperature value be sent to data analysis unit, data analysis unit handles temperature value, generate soil temperature change curve,
Experimenter can study the freezing temperature of the soil body by observing soil temperature change curve.This system structure is simple,
It is small in size, it is easy to carry to be tested to scene, do not need to remold the soil body sampling, the soil body of reset condition is surveyed in realization
Examination, improves the accuracy of test.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of soil body freezing point measuring system provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of temperature measuring mechanism provided in an embodiment of the present invention；
Fig. 3 is soil body freezing point measuring method flow chart provided in an embodiment of the present invention；
Fig. 4 is soil temperature change curve in temperature-fall period provided in an embodiment of the present invention.
In figure: 1, taper bit；2, tube body；3, the first cavity；4, annulus；5, insulated shell；6, heat carrier；7, temperature sensing
Device；8, the second cavity；9, the first liquid pipe；10, the second liquid pipe；11, handle；12, cryostat machine；13, copper sheet；14, block tin.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
As depicted in figs. 1 and 2, soil body freezing point measuring system includes for being inserted into the probe unit of inside soil body to be measured, system
Cold unit, data analysis unit, temperature measuring unit；Probe unit be equipped with the first closed cavity 3, the liquid outlet of refrigeration unit and into
Liquid mouth is connected with the first cavity 3, and refrigeration unit recycles in the first cavity 3 for controlling refrigerant, the fixed peace of temperature measuring unit
On the detection unit, temperature measuring unit connects data analysis unit to dress, and temperature measuring unit is used to acquire the temperature value of the soil body, and will acquisition
Temperature value be sent to data analysis unit, data analysis unit analyzes temperature value.
When on-the-spot test, probe unit is inserted into the soil body in region to be measured, temperature measuring unit on the detection unit is installed
It is inserted into the soil body to be measured together, opens refrigeration unit, followed in the first cavity 3 of refrigeration unit control refrigerant on the detection unit
Ring makes the cooling soil body around probe unit by heat-conduction principle, and temperature measuring unit is in real time acquired the temperature of the soil body, and
The temperature value of acquisition is sent to data analysis unit, data analysis unit handles temperature value, generates soil temperature and becomes
Change curve, experimenter can study the freezing temperature of the soil body by observing soil temperature change curve.This system knot
Structure is simple, small in size, easy to carry to be tested to scene, does not need to remold the soil body sampling, realizes the soil to reset condition
Body is tested, and the accuracy of test is improved.
In one embodiment of the present of invention, probe unit includes tube body 2, and one end of tube body 2 is equipped with taper bit 1, separately
One end is equipped with sealing-plug, and tube body 2, taper bit 1 and sealing-plug form the first cavity 3, and sealing-plug is equipped with inlet and goes out
Liquid mouth, the liquid outlet of the inlet connection refrigeration unit on sealing-plug, the feed liquor of the liquid outlet connection refrigeration unit on sealing-plug
Mouthful, temperature measuring unit is fixedly mounted on the outer surface of tube body 2.
In use, the design of taper bit 1 can make soil by one end insertion soil body of the tube body 2 with taper bit 1
Body separation, convenient for the insertion that tube body 2 is whole；Refrigeration unit can control refrigerant and be recycled in the first cavity 3, realization pair
The continued down of the soil body, to guarantee to reach the freezing point (freezing temperature) of the soil body to be measured, temperature measuring unit is fixedly mounted on the outer of tube body 2
Surface, and temperature measuring unit is located at close to one end of taper bit 1, to guarantee that temperature measuring unit is able to enter the inside of the soil body,
Realize the real-time acquisition to soil temperature.
In one embodiment of the present of invention, temperature measuring unit includes annulus 4, and annulus 4 is socketed on the outer surface of tube body 2, ring
Band 4 is equipped with several temperature measuring mechanisms, and each temperature measuring mechanism includes being mounted on the insulated shell 5 that the second cavity 8 is had on annulus 4,
It is inlaid with heat carrier 6 in insulated shell 5, heat carrier 6 runs through the insulation shell, is equipped with inside the second cavity 8 and contacts with heat carrier 6
Temperature sensor 7, the temperature sensor 7 in each temperature measuring mechanism are all connected with data analysis unit.
Temperature sensor 7 is mounted in the second cavity 8 of insulated shell 5, when being inserted into inside soil body, can protect temperature
Sensor 7 is not damaged, insulated shell 5 using heat-insulating material can be realized between tube body 2 and temperature sensor 7 without heat transfer
Or the heat transfer between reduction tube body 2 and sensor, raising temperature sensor 7 acquire the accurate of soil temperature to greatest extent
Property, while heat carrier 6 and temperature sensor 7 and heat carrier 6 contact inlayed in insulated shell 5, heat carrier 6 can be by the soil body
Temperature is transmitted in the second cavity 8, realizes temperature sensor 7 to the precise acquisition of soil temperature.Furthermore several thermometrics are set
Mechanism, for each temperature measuring mechanism distributing installation around tube body 2, the temperature sensor 7 in each temperature measuring mechanism acquires corresponding position
The temperature value of the soil body is set, data analysis unit can receive the temperature value that multiple temperature sensors 7 acquire, then to several temperature
The temperature value that degree sensor 7 acquires is averaged, and is reduced the error of acquisition soil temperature value, is improved the accuracy of acquisition.
In one embodiment of the present of invention, the shape of insulated shell 5 is hollow rectangular pyramid, and bottom surface is parallelogram, is put down
The obtuse angle of row quadrangle is greater than 120 degree, and the long-diagonal of parallelogram is parallel with the axis of tube body 2, this design can reduce
Frictional force when tube body 2 is inserted into the soil body between insulated shell 5 and the soil body, can smoothly be inserted into the soil body, while can convenient for tube body 2
The deformation for reducing surrounding soil, improves the accuracy of test.
In one embodiment of the present of invention, heat-insulating material is filled with inside the second cavity 8, insulating materials is extruded polystyrene second
Alkene foamed plastics, this design can reduce the heat transfer between tube body 2 and temperature sensor 7 to greatest extent, to reduce temperature
Sensor 7, which acquires soil temperature, is worth interference, improves the accuracy that temperature sensor 7 acquires；Tube body 2 can select low-carbon seamless
Steel pipe has the characteristics that intensity is big, can be inserted into the soil body convenient for tube body 2, while also having good thermal conductivity, realize to tube body
The cooling of 2 surrounding soils；Heat carrier 6 can select the combination of copper sheet 13 and block tin 14, and copper sheet 13 runs through insulated shell 5, by the soil body
Actual temperature be transmitted in the second cavity 8, block tin 14 is mounted on copper sheet 13, and temperature sensor 7 is mounted on block tin 14, by
Good thermal conductivity is all had in copper sheet 13 and block tin 14, therefore temperature sensor 7 can accurately acquire the real time temperature of the soil body
Value；Insulated shell 5 is made for organic glass, and organic glass has the characteristics that intensity is big and poor thermal conductivity, can be very good
To the effect of protection temperature sensor 7, while heat-insulated effect can be played, reduce tube body 2 and temperature sensor 7 to greatest extent
Between heat exchange, improve temperature sensor 7 acquire accuracy.
In one embodiment of the present of invention, refrigeration unit includes cryostat machine 12, the first liquid pipe 9 and the second liquid pipe 10, and first
The liquid outlet of one end connection cryostat machine 12 of liquid pipe 9, the other end of the first liquid pipe 9 pass through the inlet on sealing-plug and extend to
Close to the position of taper bit 1, gap is equipped between the end and taper bit 1 of the first liquid pipe 9, one end of the second liquid pipe 10 connects
The inlet of cryostat machine 12 is connect, the other end of the second liquid pipe 10 passes through liquid outlet and the conducting of the first cavity 3 on sealing-plug.
Cryostat machine 12 can be realized constant temperature output, before experiment can the cooling temperature to cryostat machine 12 set, cryostat
The temperature that machine 12 can be set cools down to the soil body, the flexible control convenient for experimenter to test condition；First liquid pipe 9
As inlet tube, the second liquid pipe 10 are outlet tube, and the end of the first liquid pipe 9 extends close to the position of taper bit 1, in pipe
When body 2 is in insertion state of soil, refrigerant is entered by the bottom of tube body 2, is flowed out by the top of tube body 2, realizes that refrigerant exists
Rapid Circulation in first cavity 3 improves the efficiency to cooling soil body.
In one embodiment of the present of invention, the refrigerant in cryostat machine 12 selects ethylene glycol, and the freezing point of ethylene glycol is taken the photograph for -25
Family name's degree meets the requirement that soil body freezing point is tested under various environment.
In one embodiment of the present of invention, the outer surface of tube body 2 is equipped with channel, between data analysis unit and temperature measuring unit
Connecting line be located in channel.The design in channel can play the role of connecting line in protection system, improve the steady of system entirety
It is qualitative.
In one embodiment of the present of invention, data analysis unit includes processor, loader and display, processor difference
Connect loader, display and temperature measuring unit.
Temperature measuring unit includes several temperature sensors 7, i.e. several temperature sensors 7 are connect with processor, processing
Device receives the temperature value that multiple temperature sensors 7 acquire, and is analyzed and processed to several temperature values, generates soil temperature and becomes
Change curve graph, and curve graph is shown by display, experimenter studies soil body freezing point by curve graph.
In one embodiment of the present of invention, the outer surface of tube body 2 is additionally provided with handle 11, and experimenter can pass through handle 11
Tube body 2 is pushed, is inserted into inside soil body convenient for tube body 2.
As shown in figure 3, soil body freezing point measurement method, comprising:
Tube body 2 is inserted into soil body predetermined depth to be measured by step S301, is opened cryostat machine 12 and is cooled down to the soil body, can be with
The output temperature of cryostat machine 12 is preset, setting output temperature range is -10 degrees Celsius to -5 degrees Celsius, such as setting -5 is taken the photograph
Family name's degree, then cryostat machine 12 cools down to the soil body with -5 degrees Celsius of constant temperature.
Step S302, temperature measuring unit acquire the temperature value of the soil body, and the temperature value of acquisition is sent to data analysis unit.
Step S303, the temperature value that data analysis unit acquires temperature measuring unit are handled, and generate soil temperature variation
Curve graph；After cooling refrigeration starts, the 13 outside soil body of copper sheet can undergo temperature-fall period, supercooling stage, mutation rank on thermometric cone angle
Section freezes the stage, continues five stages such as cooling section, when the latent heat of the incoming cooling capacity in the external world and phase transformation release balances, temperature
Rise and stop, temperature at this time is exactly the freezing temperature of the soil, as shown in figure 4, for the soil obtained during an actual test
Temperature change curve.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of soil body freezing point measuring system, which is characterized in that including the probe unit for being inserted into inside soil body to be measured, refrigeration
Unit, data analysis unit, temperature measuring unit；
The probe unit be equipped with the first closed cavity, the liquid outlet and inlet of the refrigeration unit with first chamber
Body conducting, for controlling refrigerant in the first chamber body-internal-circulation, the temperature measuring unit is fixedly mounted on the refrigeration unit
On the probe unit, the temperature measuring unit connects the data analysis unit, and the temperature measuring unit is used to acquire the temperature of the soil body
Angle value, and the temperature value of acquisition is sent to the data analysis unit, the data analysis unit analyzes temperature value.
2. soil body freezing point measuring system according to claim 1, which is characterized in that the probe unit includes tube body, institute
The one end for stating tube body is equipped with taper bit, and the other end is equipped with sealing-plug, the tube body, the taper bit and the sealing
Plug forms first cavity, and the sealing-plug is equipped with inlet and liquid outlet, and the inlet on the sealing-plug connects institute
The liquid outlet of refrigeration unit is stated, the liquid outlet on the sealing-plug connects the inlet of the refrigeration unit, the temperature measuring unit
It is fixedly mounted on the outer surface of the tube body.
3. soil body freezing point measuring system according to claim 2, which is characterized in that the temperature measuring unit includes annulus, institute
It states annulus to be socketed on the outer surface of the tube body, the annulus is equipped with several temperature measuring mechanisms, and each temperature measuring mechanism includes
It is mounted on the insulated shell for having the second cavity on the annulus, is inlaid with heat carrier in the insulated shell, the heat carrier runs through
The insulation shell, second inside cavity are equipped with the temperature sensor that contacts with the heat carrier, in each temperature measuring mechanism
Temperature sensor is all connected with the data analysis unit.
4. soil body freezing point measuring system according to claim 3, which is characterized in that second inside cavity is filled with exhausted
Hot material.
5. soil body freezing point measuring system according to claim 4, which is characterized in that the insulating materials is extruded polystyrene second
Alkene foamed plastics.
6. soil body freezing point measuring system according to claim 3, which is characterized in that the insulated shell is organic glass production
It forms.
7. soil body freezing point measuring system according to claim 2, which is characterized in that the refrigeration unit include cryostat machine,
First liquid pipe and the second liquid pipe, one end of first liquid pipe connect the liquid outlet of the cryostat machine, first liquid pipe it is another
One end passes through the inlet on the sealing-plug and extends close to the position of the taper bit, the end of first liquid pipe
Gap is equipped between the taper bit, one end of second liquid pipe connects the inlet of the cryostat machine, and described second
The liquid outlet that the other end of liquid pipe passes through on the sealing-plug is connected with first cavity.
8. soil body freezing point measuring system according to claim 2, which is characterized in that the outer surface of the tube body is equipped with logical
Road, the connecting line between the data analysis unit and the temperature measuring unit are located in the channel.
9. soil body freezing point measuring system according to any one of claims 1 to 8, which is characterized in that the data analysis is single
Member includes processor, loader and display, and the processor is separately connected the loader, the display and thermometric list
Member.
10. a kind of soil body freezing point measurement method characterized by comprising
Tube body is inserted into soil body predetermined depth to be measured, cryostat machine is opened and cools down to the soil body；
Temperature measuring unit acquires the temperature value of the soil body, and the temperature value of acquisition is sent to data analysis unit；
The temperature value that data analysis unit acquires temperature measuring unit is handled, and generates soil temperature change curve.
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| CN201910073667.7A CN109580703A (en) | 2019-01-25 | 2019-01-25 | Soil body freezing point measuring system and soil body freezing point measurement method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114487101A (en) * | 2021-12-31 | 2022-05-13 | 中国民航大学 | Freezing point detection and ice accumulation early warning method and device, storage medium and computer equipment |
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