CN207764217U - A kind of earth pillar device of the one-dimensional hydro-thermal salt migration of closed simulation frozen soil - Google Patents
A kind of earth pillar device of the one-dimensional hydro-thermal salt migration of closed simulation frozen soil Download PDFInfo
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- CN207764217U CN207764217U CN201820181493.7U CN201820181493U CN207764217U CN 207764217 U CN207764217 U CN 207764217U CN 201820181493 U CN201820181493 U CN 201820181493U CN 207764217 U CN207764217 U CN 207764217U
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Abstract
The utility model discloses a kind of earth pillar devices of the closed one-dimensional hydro-thermal salt migration of simulation frozen soil, including incubator, the cylinder to set within it, cryostat circulating temperature control system, in real time monitoring and data collecting system；Cylinder body bottom is equipped with bottom end cryostat circulation plates, and cylinder top is equipped with top cryostat circulation plates, is soil fill area between bottom end and top cryostat circulation plates；Cryostat circulating temperature control system includes bottom cryostat cycle temperature conditioning unit and top cryostat cycle temperature conditioning unit；Monitoring and data collecting system include multiple 5TE sensors and data acquisition unit in real time, and multiple 5TE sensors are separately positioned at the different depth of soil fill area, and are connect respectively with data acquisition unit by the outlet hole on cylinder lateral wall.The utility model energy two-way thawing of good simulation frost zone Unidirectional Freezing and the two-way frozen-thaw process for freezing unidirectionally to melt of ever-frozen ground mobile layer, good support is provided to probe into hydro-thermal salt Transport and mechanism in permafrost region soil underground water.
Description
Technical field
The utility model is related to area's soil underground water scientific research technical fields of trembling with fear, more particularly to a kind of closed simulation
The earth pillar device of the one-dimensional hydro-thermal salt migration of frozen soil.
Background technology
Frozen soil is divided into ever-frozen ground and frost zone, and the freeze thawing feature of ever-frozen ground mobile layer is two-way freezes, unidirectionally
Melt, the freeze thawing feature of frost zone is Unidirectional Freezing, two-way thawing.Under different freeze thawing features in soil underground water
Hydro-thermal salt has different migration and variation rule and mechanism, but at present due to the coupling and complexity of hydro-thermal salt migration and variation,
The scientific contents research is still shallow.To further investigate the contents of the section, simulating lab test has the period short compared to field test, can
The advantages of strong operability, is welcome by numerous scholars.
But there are the following problems for current indoor experimental apparatus：(1) of high cost, implement difficulty；(2) cold heat end temperature
Be difficult to control, mostly use cold wind refrigeration, it is uncertain by cold heat face, it is difficult to control Unidirectional Freezing, two-way thawing and it is two-way freeze,
The experiment condition unidirectionally melted cannot simulate field temperature field well；(3) closure is poor, experiment column be mostly it is open so as to
Receive low-temperature receiver, this can lead to moisture evaporation, volatilization and non-experimental hot transport phenomenon etc.；(4) cannot earth pillar be monitored in real time simultaneously
The moisture and salt content of interior different height tear earth pillar open after mostly using experiment and soil sample Slice by slice cutting are measured moisture and salinity contains
Amount, pushes through journey with result is counter, is unfavorable for Analysis on Mechanism；(5) the experiment column limited amount that can be carried out at the same time, heavy workload.These
Problem seriously hinders probing into for the field problem in science.
It can be seen that the above-mentioned existing indoor experimental apparatus for studying the one-dimensional hydro-thermal salt migration of frozen soil is in structure, side
Method and using upper, it is clear that there are still there is inconvenient and defect, and need to be further improved.How a kind of new closing is founded
Formula simulates the earth pillar device of the one-dimensional hydro-thermal salt migration of frozen soil, and becoming current industry pole needs improved target.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of soil of the closed one-dimensional hydro-thermal salt migration of simulation frozen soil
Column device can simulate the one-dimensional hydro-thermal salt migration in interior of frost zone and perennial permafrost active layer freeze thawing well,
Research for permafrost region hydro-thermal salt Transport and mechanism provides advantageous support, to overcome existing indoor experimental apparatus not
Foot.
In order to solve the above technical problems, the utility model provides a kind of soil of the one-dimensional hydro-thermal salt migration of closed simulation frozen soil
Column device, including incubator, the cylinder being arranged in the incubator, cryostat circulating temperature control system, real-time monitoring and data are adopted
Collecting system；
The bottom of the cylinder is equipped with bottom end cryostat circulation plates, and the top of the cylinder is equipped with top cryostat circulation plates, institute
It is to be used to form the soil fill area of earth pillar to state between bottom end cryostat circulation plates and top cryostat circulation plates, the cylinder with it is described
The corresponding side wall lower ends of soil fill area and upper end are separately connected water inlet pipe and outlet pipe, and the cylinder is filled with the soil
Corresponding its axial direction of side wall upper edge in area is additionally provided with multiple outlet holes；
The cryostat circulating temperature control system includes the first cryostat circulating instrument and the second cryostat circulating instrument, and first cryostat follows
Ring instrument is connected to by cryostat circulation pipe with bottom end cryostat circulation plates cycle, is formed bottom cryostat and is recycled temperature conditioning unit, described
Second cryostat circulating instrument is connected to by cryostat circulation pipe with top cryostat circulation plates cycle, is formed top cryostat and is recycled temperature control
Unit；
The real-time monitoring and data collecting system include multiple 5TE sensors and data acquisition unit, the multiple 5TE
Sensor is separately positioned at the different depth of the soil fill area, and passes through multiple outlets on the cylinder lateral wall respectively
Hole is connect with the data acquisition unit.
As a kind of improvement of the utility model, the bottom end cryostat circulation plates are internally provided with s type anti-icing fluid pipelines, described
The anti-icing fluid inlet and outlet of bottom end cryostat circulation plates offer on the side of the bottom end cryostat circulation plates, the cylinder lateral wall
Through-hole corresponding with the bottom end cryostat circulation plates anti-icing fluid inlet and outlet, the bottom end cryostat circulation plates periphery and the cylinder
It is tightly connected between inner wall.
It is further improved, the bottom of the cylinder is additionally provided with the polyurethane foam board below bottom end cryostat circulation plates.
It is further improved, the top cryostat circulation plates are internally provided with s type anti-icing fluid pipelines, the top cryostat circulation plates
Anti-icing fluid inlet and outlet in the top of the top cryostat circulation plates, the top cryostat circulation plates periphery and the cylinder
It is tightly connected between wall.
It is further improved, polyurethane foam board and sealing cover is also equipped with successively above the top cryostat circulation plates of the cylinder
Plate, the seal cover board is fixedly connected with the ring flange that the cylinder top opening is arranged, and the ring flange and sealing cover
Gasket is equipped between plate, offered on the polyurethane foam board and seal cover board above the top cryostat circulation plates with it is described
Cryostat circulation plates anti-icing fluid in top imports and exports corresponding through-hole.
It is further improved, the bottom end cryostat circulation plates are sealed with the cylinder inboard wall using fluid sealant；The top is cold
It bathes circulation plates to seal using vaseline with the cylinder inboard wall, watertight head is equipped at the outlet hole of the cylinder.
It is further improved, the real-time monitoring and data collecting system further include two temperature sensors, described two temperature
Degree sensor is separately positioned on the bottom and the top of the soil fill area, and described two temperature sensors pass through institute respectively
The outlet hole stated on cylinder lateral wall is connect with the data acquisition unit.
Be further improved, the data acquisition unit include the Em50 recorders being connect with the 5TE sensors and with it is described
The SMS alarm moisture recorder of temperature sensor connection, and connect with the Em50 recorders and SMS alarm moisture recorder
The terminal control unit connect.
It is further improved, the outside of the cylinder is wrapped up using heat-preservation cotton；The incubator includes babinet and lid, described
Babinet and lid are double-layer structure, and polyurethane foams is filled in interlayer.
It is further improved, the incubator includes more than two cylinders, and in described two above cylinders
Bottom end cryostat circulation plates between connect, connect between the top cryostat circulation plates in described two above cylinders.
By adopting such a design, the utility model has at least the following advantages：
By being respectively set in earth pillar layer upper and lower part, top cryostat recycles temperature conditioning unit to the utility model and bottom is cold
Bath cycle temperature conditioning unit, and controlled by the temperature of the cryostat circulating instrument in each unit, and then control earth pillar top and bottom end
Temperature reaches the two-way thawing of simulation frost zone Unidirectional Freezing well and ever-frozen ground mobile layer is two-way freezes unidirectionally to melt
Frozen-thaw process, provide good support to probe into hydro-thermal salt Transport and mechanism in permafrost region soil underground water.
Soil in the utility model in earth pillar is directly contacted with cryostat circulation plates, and cryostat circulation plates and not direct and cylinder
Body cover board and contacts baseplate are avoided that cryostat circulation plates influence cylinder wall temperature, and then reduce the barrel wall soil internal with it
Heat is transmitted, while wrapping up heat-preservation cotton in cylinder periphery, is completely cut off extraneous heat transfer, is cooled (heat) to reach only top and bottom end
Effect.
The utility model by the different location in earth pillar be equipped with can simultaneously monitoring temperature, moisture content, conductivity 5TE
Sensor, on the one hand can monitor the data in experimentation in real time, and direct analytic process is probed into conducive to mechanism；On the other hand
It avoids multiple separated sensors from bringing experimental error because of installation site difference, while also can avoid beating caused by multiple holes
The problem of earth pillar leakproofness reduces.Also by being set to the temperature sensor of soil fill area upper and lower side, earth pillar top can be measured
With the actual temperature of bottom end, the accuracy of experimental studies results is improved.
It is sealed using watertight head at the outlet hole of the utility model cylinder, the top of cylinder uses gasket and seal cover board
Sealing, bottom end cryostat circulation plates are sealed with cylinder inboard wall using fluid sealant, and cryostat circulation plates in top use all scholars with cylinder inboard wall
Woods seals, and being formed has good leakproofness.
Multiple cylinder earth pillar devices can be set simultaneously inside the incubator of the utility model, and realization is completed at the same time multiple soil
The purpose of column experiments improves conventional efficient.
The utility model is simple in structure, easy for installation, at low cost, efficient.
Description of the drawings
Above-mentioned is only the general introduction of technical solutions of the utility model, in order to better understand the technology hand of the utility model
Section, below in conjunction with attached drawing, the utility model is described in further detail with specific implementation mode.
Fig. 1 is the overall structure signal of the earth pillar device of the one-dimensional hydro-thermal salt migration of the closed simulation frozen soil of the utility model
Figure.
Fig. 2 is the structural schematic diagram of incubator in the utility model.
Fig. 3 is the structural schematic diagram of auto-real-time monitoring system in earth pillar and earth pillar in the utility model.
Fig. 4 is the structural schematic diagram of the bottom end and the top cryostat circulatory system that are connect with earth pillar in the utility model.
Fig. 5 is the structural schematic diagram of cryostat circulation plates in bottom end in the utility model.
Fig. 6 is the structural schematic diagram of cryostat circulation plates in top in the utility model.
Fig. 7 is the thermo parameters method figure under the conditions of simulation seasonal frozen soil region Unidirectional Freezing in the utility model embodiment.
Fig. 8 is the thermo parameters method figure under the simulation two-way thaw condition in seasonal frozen soil region in the utility model embodiment.
Fig. 9 is the thermo parameters method under the simulation two-way freezing condition in ever-frozen ground behaviour area in the utility model embodiment
Figure.
Figure 10 is the thermo parameters method under the simulation unidirectional thaw condition in ever-frozen ground behaviour area in the utility model embodiment
Figure.
Wherein：1, incubator, 2, cylinder, the 6, first cryostat circulating instrument, the 6 ', second cryostat circulating instrument, 8, bottom end cryostat follows
Ring flat-plate, 8 ', top cryostat circulation plates, 9, soil fill area, 10, the polyurethane foam circular slab of bottom end, 10 ', the poly- ammonia on top
Ester foaming circular slab, 11, seal cover board, 11 ', ring flange, 12,5TE sensors, 13, temperature sensor, 14, water outlet, 15,
Water inlet, 16, heat-preservation cotton, 17, Em50 recorders, 17 ', SMS alarm moisture recorder, 18, computer, 19, watertight head, 20, bottom
Hold cryostat circulation plates import, 21, the outlet of bottom end cryostat circulation plates, 20 ', top cryostat circulation plates import, 21 ', top cryostat follows
Ring flat-plate exports, and 22, outlet pipe, 23, water inlet pipe, 25, bolt, 26, gasket, 31, babinet, 32, lid, 33, incubator interlayer
The polyurethane foams of filling, 34, incubator wire inlet/outlet hole.
Specific implementation mode
The present embodiment is described in detail the application, should not be construed as so that the incubator includes two earth pillars as an example
It is any restrictions to this application.
With reference to shown in attached drawing 1, a kind of earth pillar device of the closed one-dimensional hydro-thermal salt migration of simulation frozen soil of the utility model, packet
Include incubator 1, the cylinder being arranged in the incubator 12, cryostat circulating temperature control system, in real time monitoring and data collecting system.
With reference to shown in attached drawing 2, incubator 1 includes babinet 31 and lid 32 in the present embodiment, and the babinet 31 and lid 32 are equal
For stainless steel double-layer structure, interlayer is interior to fill polyurethane foams 33, is used for insulation.The left and right sides of the babinet 31 point
Other trepanning 34, for the various pipes and line across box house component.
With reference to shown in attached drawing 3, the cylinder 2 is using circular cylinder body made of organic glass, from lower in the present embodiment
On be followed successively by：Polyurethane foam circular slab 10, bottom end cryostat circulation plates 8, soil fill area 9, the top cryostat circulation plates of bottom end
8 ', the polyurethane foam circular slab 10 ', seal cover board 11 on top.
With reference to shown in attached drawing 5, the anti-icing fluid inlet and outlet 20,21 of the bottom end cryostat circulation plates 8 are located at the bottom end cryostat cycle
The side of plate 8 is internally provided with S type anti-icing fluid pipelines, anti-icing fluid can be allowed uniformly to flow through circulation plates.It is opened up on the cylinder lateral wall
Have and imports and exports 20,21 corresponding through-holes, the bottom end cryostat circulation plates periphery and the cylinder with the bottom end cryostat circulation plates anti-icing fluid
It is tightly connected between internal wall.Since the bottom end cryostat circulation plates 8 will not be dismantled after installing, so use close herein
Sealing is sealed, can prevent well soil fill area 9 the underwater polyurethane foam circular slab 10 being seeped into below or from
Cylinder lateral wall leaks.
It is equipped with ring flange 11 ' at the top end opening of the cylinder 2, sealing is equipped between the ring flange 11 ' and seal cover board 11
Pad 26, which is fixed on by bolt 25 on ring flange 11 ', for realizing the sealing of cylinder.The gasket 26 is
Black rubber material, seal cover board 11 are organic glass material.
With reference to shown in attached drawing 6, the anti-icing fluid inlet and outlet 20 ', 21 ' of the top cryostat circulation plates 8 ' are followed positioned at the top cryostat
The top of ring flat-plate 8 ', inside also be provided with S type anti-icing fluid pipelines, anti-icing fluid can be allowed uniformly to flow through circulation plates.The top cryostat
Offered on polyurethane foam board 10 ' and seal cover board 11 above circulation plates 8 ' with the 8 ' anti-icing fluid of top cryostat circulation plates into
Export corresponding through-hole.It is tightly connected between the 8 ' periphery of top cryostat circulation plates and the cylinder inboard wall.Since the top is cold
Bath circulation plates 8 ' can be dismantled after installing, so be sealed using vaseline herein.
The polyurethane foam board on the bottom end and top is in order to avoid bottom end and top cryostat circulation plates and cylinder top wall
With being in direct contact for base end wall, the temperature for influencing barrel wall is avoided, and then barrel wall is avoided to be transmitted with the heat inside earth pillar.
The cylinder 2 side wall lower ends corresponding with soil fill area 9 and upper end are respectively equipped with water inlet 15, water outlet 14,
The water inlet 15 and water outlet 14 are connect with water inlet pipe 23 and outlet pipe 22 respectively, for being supplemented to the earth pillar of soil fill area
Water.The water inlet pipe 23 and outlet pipe 22 can connect wriggling water supplying pump, and the earth pillar saturation before starting for freeze thawing can also connect
Water charging system is used for the moisturizing in frozen-thaw process.
Its axial direction of the cylinder 2 side wall upper edge corresponding with the soil fill area 9 is additionally provided with multiple outlet holes.
With reference to shown in attached drawing 4, which includes the first cryostat circulating instrument 6 and the second cryostat circulating instrument
6 ', which is connected to by cryostat circulation pipe with the bottom end cryostat circulation plates 8, and the bottom end in two cylinders
It connects between cryostat circulation plates 8, forms bottom cryostat and recycle temperature conditioning unit；The second cryostat circulating instrument 6 ' passes through cryostat circulation pipe
It recycles with the top cryostat circulation plates 8 ', and connects between the top cryostat circulation plates 8 ' in two cylinders, form top cryostat
Recycle temperature conditioning unit.
The first cryostat circulating instrument 6 and the second cryostat circulating instrument 6 ' can set specific temperature, ranging from：+50℃
~-50 DEG C, precision is ± 0.1 DEG C, sets the fluctuation after a certain temperature and is less than ± 0.5 DEG C.The anti-icing fluid of the cryostat circulating instrument into
Outlet can control the flow velocity size of anti-icing fluid by twisting valve.Anti-icing fluid can select ethylene glycol, wine according to actual conditions
Essence etc..
The real-time monitoring and data collecting system include multiple 5TE sensors 12 and data acquisition unit.The 5TE sensors
12 can simultaneously measured temperature (precision ± 0.1 DEG C), volumetric water content and volume conductance.Multiple 5TE sensors 12 are distinguished
Be arranged at the different depth of the soil fill area 9 (i.e. earth pillar), and respectively by multiple outlet holes on the cylinder lateral wall with
The data acquisition unit connects, for pacifying at the cylinder outlet hole of the 5TE sensors and data acquisition unit connecting line
Equipped with plastics watertight head 19, to seal and prevent leak.
The data acquisition unit includes the Em50 recorders 17 being correspondingly connected with 5TE sensors 12 and station terminal control
Device, such as computer 18.The Em50 recorders 17 can be arranged different time intervals and be recorded, and record data are uploaded to end
Side controller is carried out data monitoring and calculated to analyze by terminal control unit.
In order to actually measure the temperature on top and bottom end in soil fill area, this monitor in real time and data collecting system also
Including two temperature sensors 13 and SMS alarm moisture recorder 17 ' connected to it, the SMS alarm moisture recorder 17 '
It is connect with the terminal control unit.Two temperature sensors 13 are separately positioned on the bottom and the top of the soil fill area 9.
The precision of the temperature sensor is ± 0.1 DEG C.The SMS alarm moisture recorder 17 ' can also be arranged different time intervals into
Row record, and record data are uploaded to terminal control unit, it carries out data monitoring and calculates to analyze by terminal control unit, it can be with
Temperature alarming is set, short massage notice is sent when reaching alarming value, can also realize that teledata inquiry and record are set by short message
It sets.
The outside of the cylinder 2 can preferably ensure cylinder also using having the sticking package of heat-preservation cotton 16 in the present embodiment
In soil only have top and bottom end to receive cold (heat) source.
The specific filling of the earth pillar device of the one-dimensional hydro-thermal salt migration of the closed simulation frozen soil of the utility model and seal process
It is as follows：
1, the polyurethane foam circular slab 10 of cylinder body bottom and bottom end cryostat circulation plates 8 are embedded in when making cylinder test specimen；
When 2, loading earth pillar, it is first inserted into the temperature sensor 13 of bottom end, filling soil is layered followed by dry pushing manipulation, is formed
Earth pillar is layered embedded 5TE sensors 12 when banketing column, is inserted into the temperature sensor 13 of upper end at the top of earth pillar later, and will
All outlet hole watertight heads 19 tighten sealing；
3, top cryostat circulation plates 8 ' are placed above earth pillar, be allowed to soil close contact, and by polyurethane with holes
Foamed board 10 ' is placed on the top of top cryostat circulation plates 8 ', then places gasket 26 and sealing in the top of shell flange disk 11 '
Cover board 11 has been bolted seal cover board 11, is finished to this experiment earth pillar filling；
4, test cylinder is wrapped up with sticking heat-preservation cotton 16, that is, realizes the work of filling and sealing earth pillar.
After the completion of above-mentioned part work, in conjunction with Fig. 1 and Fig. 4, need to be attached water charging system, cryostat circulating temperature control system
With real-time monitoring and data collecting system work.It needs to fill before connection water charging system and cryostat circulating temperature control system
Earth pillar body be positioned in incubator, then the both sides of incubator connect benefit equipped with wire inlet/outlet hole for exporting various pipelines
After water system, cryostat circulating temperature control system and data collecting system, incubator lid is covered.
Wherein, water charging system can be that earth pillar is saturated before freeze thawing starts, and stop water quality exchanges later, to study freeze thawing
The Transport and mechanism of zone of saturation hydro-thermal salt in the process.Can also be that water replanishing device is connected in frozen-thaw process, to study
The Transport And Transformation of moisture in frozen-thaw process.Have a ripe method and device about specific water charging system, the application no longer into
Row is described in detail.
After completing above-mentioned steps, the temperature for adjusting cryostat circulating instrument can be started, simulate ever-frozen ground mobile layer and season
The freeze thawing of property frozen soil.As the freeze thawing feature of ever-frozen ground be it is two-way freeze, unidirectionally melt from top to bottom, therefore freezing the stage,
The temperature of two cryostat circulating instruments need to be all adjusted to 0 DEG C hereinafter, i.e. earth pillar top and bottom end are subzero temperature, it is two-way to freeze.Melting
Change stage, the temperature that bottom cryostat recycles the cryostat circulating instrument in temperature conditioning unit are in 0 DEG C hereinafter, top cryostat recycles temperature control list
The temperature of cryostat circulating instrument in member is adjusted to 0 DEG C or more, i.e. earth pillar top is just warm, bottom end subzero temperature, starts top-down unidirectional
Melt.
The freeze thawing feature of frost zone is unidirectionally to freeze from top to bottom, two-way thawing, therefore is freezing the stage, need to be the bottom of by
The temperature of cryostat circulating instrument in portion's cryostat cycle temperature conditioning unit is adjusted to 0 DEG C or more, and top cryostat recycles cold in temperature conditioning unit
Bath circulating instrument temperature is adjusted to 0 DEG C hereinafter, i.e. top subzero temperature, bottom end is just warm, starts top-down Unidirectional Freezing.Melting rank
Section, for the temperature of two cryostat circulating instruments all in 0 DEG C or more, i.e. earth pillar bottom end and top is positive temperature, starts two-way thawing.
It should be noted that since cryostat circulation canal inevitably has certain thermal loss, earth pillar top bottom
The temperature at end, subject to the measured data by the temperature sensor of earth pillar top bottom.
The temperature field feelings under four kinds of different Freezing-Melting Conditions are illustrated for the present embodiment (earth pillar high 18cm, diameter 15cm) below
Condition.
If Fig. 7 is the thermo parameters method figure for simulating seasonal frozen soil region Unidirectional Freezing from top to bottom.Wherein, earth pillar is initially warm
Degree is 11 DEG C, then starts Unidirectional Freezing, and the temperature of the left sides Fig. 1 cryostat circulating instrument is adjusted to 5.5 DEG C, and the temperature of circulating instrument is bathed on the right
It is adjusted to -10 DEG C.Start the increase of top frozen crust at any time to thicken gradually downward, end temperature field is tended to balance.
If Fig. 8 is the thermo parameters method figure for simulating the two-way thawing in seasonal frozen soil region.Wherein, the cryostat of the left sides Fig. 1 is recycled
The temperature of instrument is kept for 5.5 DEG C, and the temperature of the right cryostat circulating instrument is adjusted to 5.5 DEG C.Top bottom temperature is high, and medium temperature is low, freezes
Layer starts two-way thawing, melts completely to 7.6 hours earth pillars, reaches steady temperature field to 11.8h earth pillars.
If Fig. 9 is the simulation two-way thermo parameters method figure freezed in Permafrost Area.Wherein, earth pillar initial temperature is about 11
DEG C, then proceed by it is two-way freeze, the temperature of the left sides Fig. 1 cryostat circulating instrument is adjusted to -5 DEG C, the temperature of the right cryostat circulating instrument
Degree is adjusted to -10 DEG C.Top bottom temperature is less than middle portion temperature, and frozen crust is extended from both ends to middle part, freezes completely until 8.27 hours
Knot, reaches a stable temperature field later.
If Figure 10 is the thermo parameters method figure simulated Permafrost Area and unidirectionally melted from top to bottom.Wherein, start at earth pillar
In frozen state, start unidirectionally to melt later, the temperature of the left sides Fig. 1 cryostat circulating instrument is kept for -5 DEG C, and the temperature of circulating instrument is bathed on the right
Degree is adjusted to 3 DEG C.The melt layer on 0 DEG C of top or more thickens gradually downward increase with time, and end temperature field is tended to balance.
The utility model also carries out the temperature of temperature sensor by related corresponding software and 5TE sensor temperatures, contains
The real-time monitoring of water rate and conductivity and data are downloaded, and are carried out data analysis and are migrated with studying hydro-thermal salt in cold area's soil underground water
Rule and mechanism are probed into.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, those skilled in the art make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above,
It falls within the protection scope of the present utility model.
Claims (10)
1. a kind of earth pillar device of the one-dimensional hydro-thermal salt migration of closed simulation frozen soil, which is characterized in that exist including incubator, setting
Cylinder, cryostat circulating temperature control system, real-time monitoring in the incubator and data collecting system；
The bottom of the cylinder is equipped with bottom end cryostat circulation plates, and the top of the cylinder is equipped with top cryostat circulation plates, the bottom
It is the soil fill area for being used to form earth pillar, the cylinder and the soil between end cryostat circulation plates and top cryostat circulation plates
The corresponding side wall lower ends of fill area and upper end are separately connected water inlet pipe and outlet pipe, the cylinder and the soil fill area phase
Corresponding its axial direction of side wall upper edge is additionally provided with multiple outlet holes；
The cryostat circulating temperature control system includes the first cryostat circulating instrument and the second cryostat circulating instrument, the first cryostat circulating instrument
It is connected to bottom end cryostat circulation plates cycle by cryostat circulation pipe, formation bottom cryostat cycle temperature conditioning unit, described second
Cryostat circulating instrument is connected to by cryostat circulation pipe with top cryostat circulation plates cycle, is formed top cryostat and is recycled temperature control list
Member；
The real-time monitoring and data collecting system include multiple 5TE sensors and data acquisition unit, the multiple 5TE sensings
Device is separately positioned at the different depth of the soil fill area, and respectively by multiple outlet holes on the cylinder lateral wall with
The data acquisition unit connection.
2. a kind of earth pillar device of closed one-dimensional hydro-thermal salt migration of simulation frozen soil according to claim 1, feature exist
In the bottom end cryostat circulation plates are internally provided with s type anti-icing fluid pipelines, and the anti-icing fluid of the bottom end cryostat circulation plates imports and exports position
In the side of the bottom end cryostat circulation plates, offers on the cylinder lateral wall and passed in and out with the bottom end cryostat circulation plates anti-icing fluid
The corresponding through-hole of mouth, is tightly connected between the bottom end cryostat circulation plates periphery and the cylinder inboard wall.
3. a kind of earth pillar device of closed one-dimensional hydro-thermal salt migration of simulation frozen soil according to claim 2, feature exist
In the bottom of the cylinder is additionally provided with the polyurethane foam board below bottom end cryostat circulation plates.
4. a kind of earth pillar device of closed one-dimensional hydro-thermal salt migration of simulation frozen soil according to claim 3, feature exist
In the top cryostat circulation plates are internally provided with s type anti-icing fluid pipelines, and the anti-icing fluid of the top cryostat circulation plates imports and exports position
It is tightly connected between the top of the top cryostat circulation plates, the top cryostat circulation plates periphery and the cylinder inboard wall.
5. a kind of earth pillar device of closed one-dimensional hydro-thermal salt migration of simulation frozen soil according to claim 4, feature exist
In also successively equipped with polyurethane foam board and seal cover board, the seal cover board above the top cryostat circulation plates of the cylinder
It is fixedly connected with the ring flange of cylinder top opening setting, and is equipped with sealing between the ring flange and seal cover board
It pads, is offered and the top cryostat circulation plates on the polyurethane foam board and seal cover board above the top cryostat circulation plates
Anti-icing fluid imports and exports corresponding through-hole.
6. a kind of earth pillar device of closed one-dimensional hydro-thermal salt migration of simulation frozen soil according to claim 5, feature exist
In the bottom end cryostat circulation plates are sealed with the cylinder inboard wall using fluid sealant；The top cryostat circulation plates and the cylinder
Internal wall is sealed using vaseline, and watertight head is equipped at the outlet hole of the cylinder.
7. a kind of earth pillar device of closed one-dimensional hydro-thermal salt migration of simulation frozen soil according to claim 1, feature exist
In the real-time monitoring and data collecting system further include two temperature sensors, and described two temperature sensors are respectively set
In the bottom and the top of the soil fill area, described two temperature sensors pass through going out on the cylinder lateral wall respectively
String holes is connect with the data acquisition unit.
8. a kind of earth pillar device of closed one-dimensional hydro-thermal salt migration of simulation frozen soil according to claim 7, feature exist
In the data acquisition unit includes the Em50 recorders being connect with the 5TE sensors and connect with the temperature sensor
SMS alarm moisture recorder, and the terminal control unit that is connect with the Em50 recorders and SMS alarm moisture recorder.
9. a kind of earth pillar device of closed one-dimensional hydro-thermal salt migration of simulation frozen soil according to claim 1, feature exist
In the outside of the cylinder is wrapped up using heat-preservation cotton；
The incubator includes babinet and lid, and the babinet and lid are double-layer structure, and polyurethane foam is filled in interlayer
Agent.
10. being filled according to a kind of earth pillar of the closed one-dimensional hydro-thermal salt migration of simulation frozen soil of claim 1 to 9 any one of them
It sets, which is characterized in that the incubator includes more than two cylinders, and the bottom end in described two above cylinders
It connects between cryostat circulation plates, connects between the top cryostat circulation plates in described two above cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820181493.7U CN207764217U (en) | 2018-02-02 | 2018-02-02 | A kind of earth pillar device of the one-dimensional hydro-thermal salt migration of closed simulation frozen soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820181493.7U CN207764217U (en) | 2018-02-02 | 2018-02-02 | A kind of earth pillar device of the one-dimensional hydro-thermal salt migration of closed simulation frozen soil |
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| Publication Number | Publication Date |
|---|---|
| CN207764217U true CN207764217U (en) | 2018-08-24 |
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| CN201820181493.7U Active CN207764217U (en) | 2018-02-02 | 2018-02-02 | A kind of earth pillar device of the one-dimensional hydro-thermal salt migration of closed simulation frozen soil |
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| CN109765259B (en) * | 2019-01-18 | 2021-05-25 | 安徽建筑大学 | Method and device for determining upper limit change rule of frozen soil based on soil water and salt change |
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| CN110954675A (en) * | 2019-12-03 | 2020-04-03 | 同济大学 | Special device for seasonal frozen soil indoor test and research method |
| CN111239374B (en) * | 2020-03-25 | 2022-06-28 | 中铁二院成都勘察设计研究院有限责任公司 | Saline soil salt expansion characteristic test device |
| CN111239374A (en) * | 2020-03-25 | 2020-06-05 | 中铁二院成都勘察设计研究院有限责任公司 | Saline soil salt expansion characteristic test device |
| CN112730802A (en) * | 2020-12-18 | 2021-04-30 | 中山大学 | Experimental equipment and experimental method for artificially freezing water migration model |
| CN113092313A (en) * | 2021-03-16 | 2021-07-09 | 湖北工业大学 | Composite pollution heavy metal ion migration test device with loading function |
| CN113588912A (en) * | 2021-04-29 | 2021-11-02 | 中国科学院西北生态环境资源研究院 | Simulation system and method for on-site simulation of frozen soil environment |
| CN113588912B (en) * | 2021-04-29 | 2023-10-20 | 中国科学院西北生态环境资源研究院 | Simulation system and method for simulating frozen soil environment on site |
| CN115420666A (en) * | 2022-09-29 | 2022-12-02 | 西南石油大学 | Positive freeze thawing soil gas permeability coefficient dynamic continuous testing system |
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