CN108732331A - A kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation - Google Patents
A kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation Download PDFInfo
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- CN108732331A CN108732331A CN201810513557.3A CN201810513557A CN108732331A CN 108732331 A CN108732331 A CN 108732331A CN 201810513557 A CN201810513557 A CN 201810513557A CN 108732331 A CN108732331 A CN 108732331A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
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Abstract
The invention discloses a kind of devices tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation, including earth pillar unit, evaporation element, water supplying unit and monitoring unit.Earth pillar unit includes the earth pillar of upper end opening, and earth pillar lateral wall is enclosed with adiabatic sponge.Monitoring unit includes monitoring system and data collecting system, and monitoring system includes the soil moisture-temperature-conductivity sensor and soil temperature sensor that several are inserted into earth pillar, and monitoring system connects data collecting system.Evaporation element includes the radial burner being suspended on above earth pillar.Water supplying unit includes water supply installation, and water supply installation is mounted on by jacking system on supporting rack, and water supply installation is connected to earth pillar and peristaltic pump.The present invention can easily realize the continuous monitoring with moisture, temperature, conductivity to unsaturation, to obtain the migration situation of liquid water, steam, hot-fluid and salinity in unsaturation band, submit necessary information to probe into partitioning rule of the unsaturation with water, heat, salt.
Description
Technical field
The invention belongs to groundwater environment engineering fields, and in particular to one kind is for the unsaturation band soil water, vapour, heat, salt
The device of simultaneous transport experiment.
Background technology
Transport And Transformation phenomenon in nature soil between matter and energy is very universal.Any point in unsaturated soil
Moisture movement, heat conversion and solute transfer are interrelated, interact, to form a complicated soil water power coupling
System.Therefore, the research of the soil water, heat and solute simultaneous transport mechanism within the system, to agricultural production, engineering construction, salt
The improvement in alkalization soil, the monitoring and controlling etc. of underground water pollution have important directive significance.
For this purpose, by observing soil water content, temperature, conductivity come the indirect gain soil water, the partitioning of heat, salt
Information.Though being useful for the experimental provision of similar research both at home and abroad, but still have the following defects：1. earth pillar itself does not do adiabatic place
Reason causes earth pillar to have heat exchange with external environment at the trial and cannot form the form of one-dimensional soil column leaching, to reality
Result is tested to have an impact；2. many laboratory tests all carry out in closed earth pillar, without considering outside moisture
Into the evaporation with soil moisture in coboundary, lead to the edge effect for not accounting for evaporation and soil-atmosphere interface.
Invention content
The present invention can observe soil moisture, temperature, conductance to solve the above problems, to provide a kind of globality stronger simultaneously
Rate and automatic data collection are simulated under conditions of evaporation, water-heat, water-vapour-heat, water-vapour-heat-salt migrate when
Between on change procedure, it is easy for monitoring experiment dress of the unsaturation with the soil water, vapour, heat, salt simultaneous transport in operation set
It sets.
The present invention solves its technical problem and is achieved through the following technical solutions：
A kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation, including earth pillar unit, evaporation list
Member, water supplying unit and monitoring unit；
The earth pillar unit includes the earth pillar that upper end opening is vertically arranged, the earth pillar sealed bottom, the earth pillar outside
Wall is enclosed with adiabatic sponge, and the earth pillar side wall offers several first group of probe mouth and second group of probe mouth, and described first
Group probe mouth and second group of probe mouth are oppositely arranged on earth pillar side wall both sides, and first group of probe mouth and second group of probe mouth
Along the central shaft of earth pillar longitudinal arrangement from top to bottom on earth pillar；
The monitoring unit includes monitoring system and data collecting system, and the monitoring system includes several soil water
Point-temperature-conductivity sensor and soil temperature sensor, the soil moisture-temperature-conductivity sensor pass through first group
Mouth of popping one's head in is inserted into earth pillar, and the soil temperature sensor is inserted into earth pillar, the soil moisture-temperature-by second group of probe mouth
Conductivity sensor and soil temperature sensor are all connected with data collecting system；
The evaporation element includes radial burner, and the radial burner is suspended on above earth pillar；
The water supplying unit includes water supply installation, and the water supply installation is mounted on supporting rack by the way that jacking system is liftable
On, the water supply installation is connected to earth pillar by the first aqueduct, and the water supply installation is communicated with peristaltic pump by the second aqueduct.
Further, the number of first group of probe mouth is 6, and the number of second group of probe mouth is also 6.
Further, first group of probe mouth is uniformly opened on earth pillar, and second group of spy mouth is also uniformly opened in
On earth pillar, first group of probe mouth of the top and the second second group of spy mouth arranged from top to bottom are symmetrical, described
It is symmetrical up to second first group of probe mouth of lower arrangement and the 4th second group of spy mouth arranging from top to bottom.
Further, the earth pillar inside bottom is equipped with loaded filter, and seal disc is equipped with below the loaded filter, described
Seal disc is fixedly connected with earth pillar outside earth pillar, and wire netting is equipped between the loaded filter and seal disc.
Further, the first water inlet is offered at the center of the seal disc, first aqueduct connects by first
The mouth of a river is connected to earth pillar.
Further, the water supply installation is double-layer water tank form, and the water supply installation includes outer layer sink and is set to
Internal layer sink in outer layer sink offers the second water inlet on internal layer basin sidewall, sealing is equipped on the outer layer sink
Valve；First aqueduct one end is connected to earth pillar by the first water inlet, and the first aqueduct other end is stretched into interior by the second water inlet
Layer sink；Internal layer sink is stretched into second aqueduct one end, and the second aqueduct other end is connected to peristaltic pump.
Further, the lateral wall of the earth pillar lower end is equipped with pressure-measuring pipe.
Further, the minimum altitude that the water supply installation can decline is less than or equal to the bottom level of earth pillar, the confession
Water installations can raised maximum height be greater than or equal to earth pillar overhead height.
Beneficial effects of the present invention are：
1, one-dimensional experimental simulation environment can be created.The adiabatic sponge of earth pillar outer wall has completely cut off soil and extraneous ring in earth pillar
The Horizontal Movement of hot-fluid can be ignored in the heat exchange in border with this condition, and then studies water, salt in unidirectional temperature gradient change shadow
Partitioning situation under ringing.
2, the laboratory experiment condition of evaporation can be created.By the radial burner above earth pillar, can be founded under the scale of laboratory
Evaporation conditions, and the pattern of evaporation can be changed by adjusting radial burner.
3, precisely careful to the temperature sensing of soil.Make the monitoring to temperature more into the mutual school of trip temperature by two kinds of sensors
To be accurate, because temperature is one of the main drive of water, vapour, salt, therefore accurately monitoring is essential to it.
4, the level of ground water simulated can change.It can change confession by the adjusting to the jacking system on supporting rack
The position of water installations, to adjust the position of level of ground water in earth pillar, it can be achieved that under a variety of water levels the soil water, heat, salt migration
Distribution research.
In conclusion the present invention can easily realize the continuous monitoring with moisture, temperature, conductivity to unsaturation,
To obtaining the migration situation of liquid water, steam, hot-fluid and salinity in unsaturation band, to probe into unsaturation with water, heat, salt
Partitioning rule is submitted necessary information.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the structural schematic diagram of earth pillar in the present invention；
Fig. 3 is the structural schematic diagram of sealed disc in the present invention；
Fig. 4 is the structural schematic diagram of water supply installation in the present invention.
Reference sign：
1- earth pillars, 2- jacking systems, 3- water supply installations, the first aqueducts of 4-, 5- supporting racks, 6- monitorings system, 7- data
First group of acquisition system, 8- radial burners, 9- soil moistures-temperature-conductivity sensor, 10- soil temperature sensors, 11- spy
Head mouth, second group of spy mouth of 12-, the second aqueducts of 13-, 14- peristaltic pumps, 15- thermal insulation sponge, 16- loaded filters, the first water receivings of 17-
Mouth, the second water inlets of 18-, 19- pressure-measuring pipes, 20- seal discs, 21- wire nettings, 22- water check valves.
Specific implementation mode
Below by specific embodiment, the invention will be further described, and following embodiment is descriptive, is not limit
Qualitatively, protection scope of the present invention cannot be limited with this.
As shown in Figure 1, a kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation, including earth pillar
Unit, evaporation element, water supplying unit and monitoring unit.
As shown in Figure 1 to Figure 3, earth pillar unit includes the earth pillar 1 being vertically arranged, and the material of earth pillar 1 is acrylic.Earth pillar 1
Upper end opening, it is ensured that earth pillar moisture can be evaporated processing.1 lateral wall of earth pillar is enclosed with adiabatic sponge 15, adiabatic sponge 15 every
The heat exchange of soil and external environment, can be ignored the Horizontal Movement of hot-fluid, and then study with this condition absolutely in earth pillar 1
The partitioning situation of water, salt under the influence of unidirectional temperature gradient changes.1 inside bottom of earth pillar is equipped with loaded filter 16, this hair
Bright loaded filter 16 is using gravel and coarse sand as filtrate, and 16 lower section of loaded filter is sealed by installing seal disc 20, seal disc 20
Earth pillar 1 is connected by fixed screw outside earth pillar 1, wire netting 21 is equipped between loaded filter 16 and seal disc 20, seal disc 20
The first water inlet 17 is offered at center.The effect of wire netting 21 is primarily to prevent top fine sand from entering during filling
Loaded filter 16 and block the first water inlet 17.
The lateral wall of 1 lower end of earth pillar is equipped with pressure-measuring pipe 19, and the saturation journey of soil in earth pillar 1 is observed by pressure-measuring pipe 19
Degree.1 side wall of earth pillar is uniformly provided with several first group of probe mouth 11 and second group of probe mouth 12, and the present invention uses six first
Group probe mouth 11 and six second group of probe mouths 12, first group of probe mouth 11 and second group of probe mouth 12 are oppositely arranged on earth pillar 1
Side wall both sides, and first group of probe mouth 11 and second group of probe mouth 12 equal longitudinal arrangement from top to bottom on earth pillar 1.Top
First group of probe mouth 11 and the second second group of spy mouth 12 arranged from top to bottom are symmetrical, second arranged from top to bottom
First group of probe mouth 11 and the 4th second group of spy mouth 12 arranged from top to bottom are symmetrical, between soil temperature sensor 10
Away from the half for being soil moisture -9 spacing of temperature-conductivity sensor.The present invention with two kinds of sensors into trip temperature mutually compared with, and add
The measurement of close temperature, because the migration for influencing soil moisture and salt is mainly temperature factor.
As depicted in figs. 1 and 2, monitoring unit includes monitoring system 6 and data collecting system 7, and monitoring system 6 includes six
Soil moisture-temperature-conductivity sensor 9 and six soil temperature sensors 10.Soil moisture-temperature-conductivity sensor 9
It is inserted into earth pillar 1 by first group of probe mouth 11, soil temperature sensor 10 is inserted into earth pillar 1, soil by second group of probe mouth 12
Moisture-temperature-conductivity sensor 9 and soil temperature sensor 10 are all connected with data collecting system 7.
As shown in Figure 1, evaporation element includes radial burner 8, radial burner 8 is suspended on 1 top of earth pillar, and radial burner 8 can provide soil
The condition of moisture evaporation in column simulates evaporitic environment, and can change the pattern of evaporation by adjusting radial burner.
As shown in Figure 1 and Figure 4, water supplying unit includes water supply installation 3, and water supply installation 3 is double-layer water tank form, water supply installation
3 include outer layer sink and the internal layer sink being set in outer layer sink, and the second water inlet 18 is offered on internal layer basin sidewall.For
Water installations 3 by the first aqueduct 4 be connected to earth pillar 1,4 one end of the first aqueduct by the first water inlet 17 be connected to earth pillar 1, first
4 other end of aqueduct stretches into internal layer sink by the second water inlet 18.Water supply installation 3 is communicated with wriggling by the second aqueduct 13
Internal layer sink is stretched into pump 14,13 one end of the second aqueduct, and 13 other end of the second aqueduct is connected to peristaltic pump 14.Internal layer tank water is full
After can outer layers gutter spill, water check valve 22 is installed on outer layer sink, extra spilling water can be discharged.Water supply installation 3 passes through lifting
System 2 is liftable to be mounted on supporting rack 5, by that can change water supply installation to the adjusting of the jacking system 2 on supporting rack 5
3 position, to adjust the position of level of ground water in earth pillar 1, it can be achieved that under a variety of water levels the soil water, heat, salt partitioning
Research.The minimum altitude that water supply installation 3 can decline is less than or equal to the bottom level of earth pillar 1, and water supply installation 3 can raised highest
Height is greater than or equal to the overhead height of earth pillar 1.
The application method of apparatus of the present invention is as follows：
(1) it is laid with wire netting 21 on the sealed disc 20 of 1 bottom of earth pillar, and loaded filter is laid on 21 upper layer of wire netting
16。
(1) soil sample is filled into earth pillar 1, the volume density in earth pillar 1 everywhere should be kept identical when filling soil sample.
(3) when soil sample is loaded into certain altitude, soil moisture-temperature-conductivity sensor 9 and soil temperature are inserted into installation
Spend sensor 10.
(4) with fluid sealant to the hole around soil moisture-temperature-conductivity sensor 9 and soil temperature sensor 10
Gap is sealed.
(5) it after having loaded soil sample and having set up sensor, is carried out using 2~3 layers of adiabatic sponge material in 1 outside of earth pillar
Package, and the interface position for the soil moisture-temperature-conductivity sensor 9 and soil temperature sensor 10 that be staggered.
(6) and automatic data collection by soil moisture-temperature-conductivity sensor 9 and soil temperature sensor 10
System 7 connects.
(7) water supply installation 3 is adjusted to set close to native epitope using jacking system 2.
(8) experiment salting liquid is configured.
(9) opening peristaltic pump 14 makes the inside groove of water supply installation 3 fill configured solution, and continuing for some time makes in earth pillar
The soil body is saturated.After observing soil body saturation by pressure-measuring pipe 19, closes peristaltic pump 14 and open automatic data acquisition system 7.It is quiet
A period of time is set, waits for gravity drainage to complete, one unsaturation band of self-assembling formation.
(10) radial burner 8 is opened, data are acquired and obtained by automatic data acquisition system 7, included data have soil
Earth temperature T, soil moisture content θ, soil conductivity, whole process continue 72h or more.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation, it is characterised in that：Including earth pillar list
Member, evaporation element, water supplying unit and monitoring unit；
The earth pillar unit includes the earth pillar (1) that upper end opening is vertically arranged, earth pillar (1) sealed bottom, the earth pillar (1)
Lateral wall is enclosed with adiabatic sponge (15), and earth pillar (1) side wall offers several first group of probe mouth (11) and second group
Probe mouth (12), first group of probe mouth (11) are oppositely arranged on earth pillar (1) side wall both sides with second group of probe mouth (12), and
First group of probe mouth (11) and second group of probe mouth (12) on earth pillar (1) along the central shaft of earth pillar (1) from top to bottom
Longitudinal arrangement；
The monitoring unit includes monitoring system (6) and data collecting system (7), and the monitoring system (6) includes several soil
Earth moisture-temperature-conductivity sensor (9) and soil temperature sensor (10), the soil moisture-temperature-conductivity sensors
Device (9) is inserted into earth pillar (1) by first group of probe mouth (11), and the soil temperature sensor (10) passes through second group of probe mouth
(12) it is inserted into earth pillar (1), the soil moisture-temperature-conductivity sensor (9) and soil temperature sensor (10) are all connected with number
According to acquisition system (7)；
The evaporation element includes radial burner (8), and the radial burner (8) is suspended on above earth pillar (1)；
The water supplying unit includes water supply installation (3), and the water supply installation (3) is mounted on by the way that jacking system (2) is liftable
On supporting rack (5), the water supply installation (3) is connected to earth pillar (1) by the first aqueduct (4), and the water supply installation (3) passes through the
Two aqueducts (13) are communicated with peristaltic pump (14).
2. a kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation as described in claim 1, special
Sign is：The number of first group of probe mouth (11) is 6, and the number of second group of probe mouth (12) is also 6.
3. a kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation as claimed in claim 2, special
Sign is：First group of probe mouth (11) is uniformly opened on earth pillar (1), and second group of spy mouth (12) is also uniformly opened in
On earth pillar (1), first group of probe mouth (11) of the top and second second group of spy mouth (12) phase arranged from top to bottom
It is mutually symmetrical, described second first group of probe mouth (11) up to lower arrangement and the 4th second group of spy mouth arranged from top to bottom
(12) symmetrically.
4. a kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation as described in claim 1, special
Sign is：Earth pillar (1) inside bottom is equipped with loaded filter (16), and seal disc is equipped with below the loaded filter (16)
(20), the seal disc (20) is fixedly connected with earth pillar (1) outside earth pillar (1), between the loaded filter (16) and seal disc (20)
Equipped with wire netting (21).
5. a kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation as claimed in claim 4, special
Sign is：The first water inlet (17) is offered at the center of the seal disc (20), first aqueduct (4) connects by first
The mouth of a river (17) is connected to earth pillar (1).
6. a kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation as described in claim 1, special
Sign is：The water supply installation (3) is double-layer water tank form, and the water supply installation (3) includes outer layer sink and is set to outer layer
Internal layer sink in sink offers the second water inlet (18) on internal layer basin sidewall, sealing is equipped on the outer layer sink
Valve (22)；First aqueduct (4) one end is connected to earth pillar (1) by the first water inlet (17), and the first aqueduct (4) other end passes through
Second water inlet (18) stretches into internal layer sink；Internal layer sink, the second aqueduct (13) are stretched into described second aqueduct (13) one end
The other end is connected to peristaltic pump (14).
7. a kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation as described in claim 1, special
Sign is：The lateral wall of earth pillar (1) lower end is equipped with pressure-measuring pipe (19).
8. a kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation as described in claim 1, special
Sign is：The minimum altitude that the water supply installation (3) can decline is less than or equal to the bottom level of earth pillar (1), the water supply dress
Set (3) can raised maximum height be greater than or equal to earth pillar (1) overhead height.
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| CN201810513557.3A CN108732331A (en) | 2018-05-25 | 2018-05-25 | A kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation |
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| CN201810513557.3A CN108732331A (en) | 2018-05-25 | 2018-05-25 | A kind of device tested with the soil water, vapour, heat, salt simultaneous transport for unsaturation |
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Cited By (10)
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| CN109387617A (en) * | 2018-12-27 | 2019-02-26 | 中国科学院地理科学与资源研究所 | A kind of dry earth pillar aqueous vapor heat migration observation experiment device |
| CN109470840A (en) * | 2018-12-03 | 2019-03-15 | 石河子大学 | A kind of multifunction soil water salt fertilizer migration study on regulation device |
| CN110057854A (en) * | 2019-04-29 | 2019-07-26 | 河海大学 | A kind of test method of simulating drought desert Influence of Evaporation critical depth |
| CN110208148A (en) * | 2019-07-10 | 2019-09-06 | 中国市政工程华北设计研究总院有限公司 | For studying and testing the integrated system of moisture and salt regime rule in coastal region soil |
| CN110426338A (en) * | 2019-09-09 | 2019-11-08 | 河海大学 | It is a kind of for being saturated the varying load consolidation testing device of the elastoplasticity soil body |
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| CN113075383A (en) * | 2021-03-30 | 2021-07-06 | 陕西地建土地工程技术研究院有限责任公司 | Experimental device and method for simulating water and salt migration of saline-alkali soil |
| 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 |
| CN114544909A (en) * | 2022-02-11 | 2022-05-27 | 中国农业大学 | Heterogeneous unsaturated soil evaporation process tracing experimental device and method |
| CN116793514A (en) * | 2023-08-29 | 2023-09-22 | 常州乐研分离技术有限公司 | Temperature detection structure of evaporation drying all-in-one machine |
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