CN108645894A - Monitor NAPLs migration process and test method of phase transformation in unsaturated soil - Google Patents
Monitor NAPLs migration process and test method of phase transformation in unsaturated soil Download PDFInfo
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- CN108645894A CN108645894A CN201810377229.5A CN201810377229A CN108645894A CN 108645894 A CN108645894 A CN 108645894A CN 201810377229 A CN201810377229 A CN 201810377229A CN 108645894 A CN108645894 A CN 108645894A
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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
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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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
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/0813—Measuring intrusion, e.g. of mercury
Abstract
The present invention provides a kind of monitoring NAPLs migration process and test methods of phase transformation in unsaturated soil.This method includes：Soil sample is inserted into experimental box, by the specified position in the lucite cylinder embedment soil sample equipped with NAPLs, NAPLs penetrates into soil sample, metal mesh keg is fixed on the antetheca of experimental box, metal mesh keg is embedded in the soil sample, and NAPLs gas concentration sensors are mounted in the metal mesh keg；Each NAPLs gas concentration sensors are all connected to data acquisition device, data acquisition device obtains the measurement data of each NAPLs gas concentration sensors acquisition, analyzes measurement data.Experimental method provided by the invention can quantitatively measure when NAPLs migrates in unsaturated soil that each phase volume fraction changes with time at measuring point, also each phase concentration regularities of distribution of NAPLs at synchronization different measuring points can be obtained, NAPLs migrations and phase transformation law under conditions of different dry densities, water content can be also measured.
Description
Technical field
The present invention relates to soil investigation technical field more particularly to a kind of monitoring NAPLs (non-aqueous phase
Liquids, non-soluble liquid) migration process and the test method of phase transformation in unsaturated soil.
Background technology
For oil as current one of main energy sources object, application is more and more extensive.Some petroleum-type products are producing, fortune
It is defeated, some leakage accidents inevitably occur during storage and use, pollute underground environment, the pollutant and water of these nonaqueous phases are not
It is compatible and be difficult to degrade, long-term existing pollution sources in the soil of underground can be become.Currently, some scholars both domestic and external exist to NAPLs
Migration rule in unsaturated soil has done relevant research, but lacks direct experimental verification, also without relevant experimental method
Study the phase transformation of the NAPLs during this.
Invention content
The embodiment provides a kind of experiment sides of migration process and phase transformation in unsaturated soil monitoring NAPLs
Method, the shortcomings that overcome the prior art.
A kind of monitoring NAPLs migration process and experimental method of phase transformation in unsaturated soil, using including experimental box, organic
The experimental provision of glass infuser and NAPLs gas concentration sensors, the method specifically include：
The soil sample is filled in the experimental box by the soil sample for preparing specified dry density and specified water content from the bottom to top
Specified altitude assignment, the lucite cylinder equipped with NAPLs is embedded to the specified position in the soil sample, metal mesh keg is fixed on
On the antetheca of the experimental box, and the metal mesh keg is embedded in the soil sample, the NAPLs gas concentration sensors peace
In the metal mesh keg, the NAPLs penetrates into the soil sample；
Each NAPLs gas concentration sensors are all connected to data acquisition device, the data acquisition device obtains each
The measurement data of a NAPLs gas concentration sensors acquisition, analyzes measurement data.
Further, the method further includes：
Markov bottle is connect by rubber hose with intake tunnel built-in in the metab of the experimental box, according to reality
The height for testing required level of ground water adjusts the position of the Markov bottle, and the water in the Markov bottle flows to the bottom of the soil sample,
After after the height of water level needed for the water level in the soil sample reaches experiment and maintaining to stablize, the data acquisition device records each
The gas phase NAPLs concentration datas of NAPLs gas concentration sensors acquisition.
Further, the metal mesh keg is fixed on by cored screw on the antetheca of experimental box, and the metal mesh is small
Bucket is successively installed, and is installed metal mesh keg and NAPLs gas concentrations at this layer again after depth of banketing reaches this layer of position and is passed
Sensor.
Further, the NAPLs gas concentration sensors include semiconductor transducer, and the NAPLs gas concentrations pass
Sensor is put into using laterally three rows, the arrangement of longitudinal row in soil sample.
Further, the thickness of the organic glass case is less than its height and width, and the bottom of the lucite cylinder is set
There is metal mesh, the leakage of lucite cylinder bottom all directions is identical, and the barrel of the lucite cylinder is carved with
Degree.
Further, the aperture of NAPLs gas concentration sensors entrance is reserved with before the experimental box, the aperture is straight
Diameter 4cm；Distance between the adjacent apertures center of circle is 15cm, and along centre, vertically there are 6 apertures, the small pitch bottoms of bottom
15cm, there are 3 row's apertures on the left of axis for horizontal direction, often arrange 4 apertures, and distance between row and row is 30cm；
Banket 1.1m high altogether in the experimental box body, and the lucite cylinder 10 is buried in the earth 10cm, the organic glass
Cylinder overall diameter take 7cm, high 30cm.
Further, the NAPLs gas concentration sensors are positioned over by the hole reserved on experimental box in experimental box
Metal mesh keg in, the tail portion of the metal mesh keg is provided with screw thread, this is threaded on a cored screw, and screw rod is another
One is connected with rubber nut, and the junction at the cored screw both ends is equipped with seal washer, NAPLs gas concentration sensors
After wiring is pierced by by the hole at rubber nut center, hole is sealed with glue.
Further, described that each NAPLs gas concentration sensors are all connected to data acquisition device, the data
Harvester obtains the measurement data of each NAPLs gas concentration sensors acquisition, analyzes measurement data, including：
The NAPLs gas concentration sensors include gas sensitive, do not have gas phase in gas when beginning in soil sample
NAPLs becomes gas phase, NAPLs gas into the NAPLs in soil sample with the leakage of NAPLs in the lucite cylinder with volatilization
The conductivity of concentration sensors increases, the NAPLs gas concentration sensors with the increase of gas phase NAPLs concentration in air
The variation of conductivity is converted to the electric signal of simulation corresponding with gas phase NAPLs concentration using circuit；
Data acquisition device is connected with Sampling Interface with each NAPLs gas concentration sensors by powering, data
Harvester receives the electric signal of the simulation of each NAPLs gas concentration sensors output, by internal ADC to the simulation
Electric signal carries out analog-to-digital conversion, obtains digital signal, carries out curve fitting to the digital signal and non-linear correction processing, obtains
To gas phase NAPLs concentration datas, by gas phase NAPLs concentration datas by local screen and the teletransmission of RS485 data lines to PC machine into
Row display and storage.
Further, the NAPLs includes gasoline, and red Ⅲ stain is added in the gasoline.
Further, the method further includes：
The soil sample for configuring different moisture content under a certain dry density is tested；Alternatively, configuring different dry under a certain water content
The soil sample of density is tested.
The experimental provision provided in an embodiment of the present invention it can be seen from the technical solution that embodiments of the invention described above provide
It can quantitatively measure when NAPLs migrates in unsaturated soil that each phase volume fraction changes with time at measuring point with method,
It can obtain each phase concentration regularities of distribution of the NAPLs at synchronization different measuring points.In unsaturated soil provided in an embodiment of the present invention
NAPLs migration process and the experimental method of phase transformation, definite principle, clear thinking can measure the item in different dry densities, water content
NAPLs migrations and phase transformation law under part.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without having to pay creative labor, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of monitoring NAPLs experiments of migration process and phase transformation in unsaturated soil provided in an embodiment of the present invention
The structural schematic diagram of device；
Fig. 2 is a kind of structure chart of experimental box provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of junction between a kind of experimental box each section provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of sensor metal mesh keg junction provided in an embodiment of the present invention；
Fig. 5 is a kind of structure chart of lucite cylinder provided in an embodiment of the present invention.
Reference sign：
1 experiment upper box part 2 tests 3 metab of lower box part, 4 Markov bottle
5 sensor preformed hole, 6 metal supports 7 bolt hole, 8 hose connection
9 bolt, 10 lucite cylinder, 11 sealing joint strip, 12 metal mesh keg
13 cored screw, 14 rubber nut, 15 experimental box side wall 16 surpasses fine-meshed metal net
Specific implementation mode
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with attached drawing
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Embodiment one：
This embodiment offers a kind of monitoring NAPLs migration process and experimental provisions of phase transformation in unsaturated soil.
Experimental principle：In a certain range, it can be assumed that the soil body is axisymmetric, that is to say, that NAPLs is horizontal each
The migration in direction is all identical, chooses any horizontal direction along with vertical direction can be obtained by NAPLs in the soil body
Transport conditions, practical three-dimensional problem translate into ideal two-dimensional problems.To be studied for gasoline in experiment, outside gasoline
It is transparency liquid to see, and is not easy to the migration position with observation sharp side, and soudan III stain can be added, and soudan III is a kind of chemistry dye
Toner is mainly used for the dyeing of oil, machine oil and some other industrial solvents, can clearly see sharp side in this way
Position；Gasoline can be undergone phase transition after entering the soil body, and under normal circumstances, mainly gas phase and liquid phase can pass through and measure different positions
The gas phase gasoline and liquid phase gasoline concentration set change with time, currently, the dense of gas phase gasoline can be measured with semiconductor transducer
Degree, currently without suitable reliable sensor, it is water content of soil to be presently considered primary variables for the measurement of the concentration of liquid phase gasoline
And dry density, the soil body for configuring different moisture content under a certain dry density are tested, it is aqueous before changing dry density and still pressing
The amount configuration soil body, can be obtained by the experimental result of same dry density different moisture content and same water content difference dry density in this way
Experimental result；Under conditions of given a certain dry density and water content, it is dense that gas phase gasoline at a certain measuring point can also be obtained
The case where degree changes over time.
The structure for a kind of monitoring the NAPLs migration process and the experimental provision of phase transformation in unsaturated soil that the embodiment provides
As shown in Figure 1, including experimental box, lucite cylinder 10, NAPLs gas concentration sensors and Markov bottle 4.Experimental box includes experiment
Upper box part 1, experiment lower box part 2, metab 3 and metal support 6；Test upper box part 1 and experiment lower box part 2, experiment lower box part 2
Between metab 3 connected by bolt hole 7 and bolt 9, the junction of the bolt hole 7 and bolt 9 is equipped with sealing
Adhesive tape is tested between upper box part 1 and metab 3 through 6 connection of metal support.
In the concrete application of the present invention, banket 1.1m high altogether in experimental box body, and simulated leakage source is equipped with NAPLs
Lucite cylinder 10 be buried in the earth 10cm, the cylinder overall diameter of the organic glass 10 in simulated leakage source takes 7cm, high 30cm.Wait for it
Gasoline is added in lucite cylinder 10 after the completion for preparation in he.
Metal mesh keg is fixed on by cored screw on the antetheca of experimental box, and dismounting is easily installed.To banket conveniently, gold
Belong to net keg successively to install, metal mesh keg 12 and the sensor at this are installed again after depth of banketing reaches this layer of position, and
And the metal mesh keg 12 is embedded in the soil sample, NAPLs gas concentration sensors are mounted in metal mesh keg, NAPLs
Gas concentration sensor is also embedded in soil sample, it is ensured that the good working environment of sensor.
The gas phase concentration that above-mentioned NAPLs gas concentration sensors are used for measuring NAPLs in soil sample in practical applications can
With by NAPLs gas concentration sensors, using laterally three rows, the arrangement of longitudinal row is put into soil sample, substantially covers two
Maintenance and operation moves required whole region.
To be positioned over the metal mesh in experimental box small by the hole reserved on experimental box for above-mentioned NAPLs gas concentration sensors
In bucket.Above-mentioned metal mesh keg is made of fine metal mesh, and soil particle cannot be introduced into, and air can freely come in and go out, the small cylinder tail portion of metal
There is screw thread, be connected on a cored screw, screw rod other end is connected with rubber nut, and metal mesh keg is fixed by cored screw
On the wall of experimental box.The junction at above-mentioned cored screw both ends can be equipped with seal washer, NAPLs gas concentration sensors
After wiring is pierced by by the hole at rubber nut center, hole is sealed with glue.
Markov bottle 4 is connect with intake tunnel built-in in experimental box metab (if not considering underground by rubber hose 8
The influence of water or level of ground water can be not connected to Markov bottle when being far below soil depth).Water in Markov bottle 4 flows to the soil sample
Bottom.The scale that the outer wall of the experimental box upper and lower part carries horizontal and vertical direction will be protected during the experiment
Confirm the level of ground water of soil body maintenance certain altitude in tryoff.
The thickness of organic glass case (1 and 2) is much smaller than its height and width, and installs metal support 6 and ensure its stabilization, uses
To simulate the two-dimentional migration process of NAPLs in soil sample.The bottom of lucite cylinder 10 is equipped with super fine-meshed metal net, simulated leakage
Source, it is ensured that the leakage of all directions is identical, and barrel is carved with scale can read the total amount of leakage at any time.Lucite cylinder is logical
The mode being buried in the earth is crossed to fix, it is easy to operate and tally with the actual situation.
Fig. 2 is a kind of structure chart of experimental box provided in an embodiment of the present invention, and Fig. 3 is one kind provided in an embodiment of the present invention
The schematic diagram of junction between experimental box each section.Experiment box main body is made of organic glass, and experimental box high 1.2m is wide
1.2m, thick 15cm；Organic glass wall thickness 1cm, it is ensured that the safety of experimental box；Experimental box pedestal is made of metal, and passes through gold
Belong to support to connect with experiment upper box part, ensures the stabilization of experimental box.
Junction between experimental box each section is equipped with the sealing joint strip of antiseep.It is reserved with before the experimental box
The aperture that NAPLs gas concentration sensors enter, hole diameter 4cm；Distance between the adjacent apertures center of circle is 15cm, in
Between vertically there are 6 apertures, the small pitch bottom 15cm of bottom, horizontal direction, there are 3 row's apertures, often arranges 4 on the left of axis
A aperture, distance between row and row is 30cm, can refer to Fig. 1.
Optionally, semiconductor transducer may be used in NAPLs gas concentration sensors.
Sensor operating principles：NAPLs gas concentration sensors use the lower air-sensitive material of conductivity in air
Expect stannic oxide (SnO2).There is no gas phase NAPLs in gas when beginning in soil sample, with the leakage of NAPLs, into soil sample
NAPLs become gas phase with volatilization, the conductivity of NAPLs gas concentration sensors with gas phase NAPLs concentration in air increase
And increase, the variation of conductivity is converted into output electric signal corresponding with gas phase NAPLs concentration using circuit.
Data acquisition device is connected with Sampling Interface with each NAPLs gas concentration sensors by powering, data
Harvester receives the electric signal of the simulation of each NAPLs gas concentration sensors output, by internal ADC to the telecommunications of simulation
Number analog-to-digital conversion is carried out, obtains digital signal, carry out curve fitting according to calibration and is corrected to non-linear to obtain correctly
Gas phase NAPLs concentration datas carry out gas phase NAPLs concentration datas by local screen and RS485 data lines teletransmission to PC machine
Display and storage.Then, measurement data is analyzed, obtains analysis result.Then zeroing data.The sensor of different layers
The measurement data meaning of acquisition is identical, only measured to represent position difference.
Embodiment two
Based on device shown in FIG. 1, the embodiment provide a kind of monitoring NAPLs in unsaturated soil migration process and phase
The test method of change includes：
Soil sample first has been configured by certain dry density and water content, has been sealed with preservative film.Connect 3 He of metab
Lower box part 2 is tested, layering is by the soil sample prepared filling experiment lower box part 2 and successively installation metal mesh keg and NAPLs gases are dense
Sensor is spent, experiment lower box part is not filled up when banketing, the height of reserved 2-3cm is easily installed, experiment upper box part 1 and in fact
Tryoff lower part 2 connects, and metal support is used in combination 6 experiment upper box part 1 and metab 3 to be fixed, continue to banket as stated above with
Metal mesh keg is installed, in preset distance depth of fill 10cm, lucite cylinder 10, simulated leakage source are placed in specified position
The lucite cylinder 10 equipped with NAPLs be buried in the earth 10cm, continue to banket the specified altitude assignment into experimental box.
Markov bottle 4 is connect with the hose connection 8 of metab according to experimental conditions rubber hose, and ensures Markov bottle
Water in 4 can flow to the bottom of soil sample, the position of Markov bottle 4 be adjusted according to the height of level of ground water needed for experiment, in geneva
It is put into suitable water in bottle 4, test apparatus is stood 24 hours or more, it is ensured that the water level in soil reaches experiment desired height simultaneously
It maintains to stablize.And check the leakproofness at each measuring point.
In practical applications, above-mentioned NAPLs can be gasoline, and red Ⅲ stain is added in the oil, takes a certain amount of
Gasoline is added in lucite cylinder 10, if the volume of the gasoline needed for experiment is more than the volume of lucite cylinder 10, can add in batches
Enter, after gasoline addition, with the upper end of closed with covers lucite cylinder, observes the experimental conditions at each measuring point and record number
According to.
Each NAPLs gas concentration sensors are all connected to data acquisition device, the data acquisition device obtains each
The measurement data of a NAPLs gas concentration sensors acquisition, analyzes measurement data.
In conclusion experimental provision provided in an embodiment of the present invention and method can quantitatively measure NAPLs in unsaturation
Each phase volume fraction changes with time at measuring point when migrating in soil, and it is each also to obtain the NAPLs at synchronization different measuring points
The phase concentration regularity of distribution.NAPLs migration process and the experimental method of phase transformation, principle in unsaturated soil provided in an embodiment of the present invention
Clear, clear thinking can measure NAPLs migrations and phase transformation law under conditions of different dry densities, water content.
One of ordinary skill in the art will appreciate that：Attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Flow is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that：The module in equipment in embodiment can describe to divide according to embodiment
It is distributed in the equipment of embodiment, respective change can also be carried out and be located in one or more equipment different from the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (10)
1. a kind of monitoring NAPLs migration process and experimental method of phase transformation in unsaturated soil, which is characterized in that it includes real to use
Tryoff, lucite cylinder and NAPLs gas concentration sensors experimental provision, the method specifically includes：
The soil sample is filled with the finger in the experimental box by the soil sample for preparing specified dry density and specified water content from the bottom to top
Fixed height, the specified position in the soil sample is embedded to by the lucite cylinder equipped with NAPLs, metal mesh keg is fixed on described
On the antetheca of experimental box, the metal mesh keg is embedded in the soil sample, and the NAPLs gas concentration sensors are mounted on described
In metal mesh keg, the NAPLs penetrates into the soil sample；
Each NAPLs gas concentration sensors are all connected to data acquisition device, the data acquisition device obtains each
The measurement data of NAPLs gas concentration sensors acquisition, analyzes measurement data.
2. according to the method described in claim 1, it is characterized in that, the method further includes：
Markov bottle is connect by rubber hose with intake tunnel built-in in the metab of the experimental box, according to experiment institute
The height of level of ground water is needed to adjust the position of the Markov bottle, the water in the Markov bottle flows to the bottom of the soil sample, waits for institute
It states the water level in soil sample to reach the height of water level needed for experiment and maintain after stablizing, the data acquisition device records each
The gas phase NAPLs concentration datas of NAPLs gas concentration sensors acquisition.
3. according to the method described in claim 1, it is characterized in that, the metal mesh keg is fixed on experiment by cored screw
On the antetheca of case, the metal mesh keg is successively installed, and installs the metal at this layer again after depth of banketing reaches this layer of position
Net keg and NAPLs gas concentration sensors.
4. according to the method described in claim 1, it is characterized in that, the NAPLs gas concentration sensors include semiconductor biography
Sensor, the NAPLs gas concentration sensors are put into using laterally three rows, the arrangement of longitudinal row in soil sample.
5. according to the method described in claim 1, it is characterized in that, the thickness of the organic glass case is less than its height and width
The bottom of degree, the lucite cylinder is equipped with metal mesh, and the leakage of lucite cylinder bottom all directions is identical, institute
The barrel for stating lucite cylinder is carved with scale.
6. according to the method described in claim 1, it is characterized in that, being reserved with NAPLs gas concentrations before the experimental box
The aperture that sensor enters, hole diameter 4cm；Distance between the adjacent apertures center of circle is 15cm, and along centre, vertically there are 6
Aperture, the small pitch bottom 15cm of bottom, there are 3 row's apertures on the left of axis for horizontal direction, often arrange 4 apertures, row and row
The distance between be 30cm；
Banket 1.1m high altogether in the experimental box body, and the lucite cylinder is buried in the earth 10cm, outside the cylinder of the organic glass
Diameter takes 7cm, high 30cm.
7. according to the method described in claim 6, it is characterized in that, the NAPLs gas concentration sensors pass through on experimental box
Reserved hole is positioned in the metal mesh keg in experimental box, and the tail portion of the metal mesh keg is provided with screw thread, the screw thread
It is connected on a cored screw, screw rod other end is connected with rubber nut, and the junction at the cored screw both ends is equipped with sealing
Washer, after the wiring of NAPLs gas concentration sensors is pierced by by the hole at rubber nut center, hole is sealed with glue.
8. method according to any one of claims 1 to 7, which is characterized in that described to pass each NAPLs gas concentrations
Sensor is all connected to data acquisition device, and the data acquisition device obtains the survey of each NAPLs gas concentration sensors acquisition
Data are measured, measurement data is analyzed, including：
The NAPLs gas concentration sensors include gas sensitive, do not have gas phase NAPLs in gas when beginning in soil sample, with
The leakage for NAPLs in the lucite cylinder becomes gas phase into the NAPLs in soil sample with volatilization, and NAPLs gas concentrations pass
The conductivity of sensor increases with the increase of gas phase NAPLs concentration in air, and the NAPLs gas concentration sensors use circuit
The variation of conductivity is converted to the electric signal of simulation corresponding with gas phase NAPLs concentration；
Data acquisition device is connected with Sampling Interface with each NAPLs gas concentration sensors by powering, data acquisition
Device receives the electric signal of the simulation of each NAPLs gas concentration sensors output, by internal ADC to the telecommunications of the simulation
Number analog-to-digital conversion is carried out, obtains digital signal, carry out curve fitting to the digital signal and non-linear correction processing, obtain gas
Phase NAPLs concentration datas show gas phase NAPLs concentration datas by local screen and RS485 data lines teletransmission to PC machine
Show and stores.
9. according to the method described in claim 1, it is characterized in that, the NAPLs includes gasoline, and being added in the gasoline
Red Ⅲ stain.
10. according to the method described in claim 8, it is characterized in that, the method further includes：
The soil sample for configuring different moisture content under a certain dry density is tested；Alternatively, configuring different dry densities under a certain water content
Soil sample tested.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398360A (en) * | 2018-05-10 | 2018-08-14 | 北京交通大学 | A kind of experimental rig for studying NAPLs migrations and phase transformation law |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201575963U (en) * | 2009-12-31 | 2010-09-08 | 四川农业大学 | Dynamic monitoring tester for soil moisture and salt in greenhouse |
| CN102721799A (en) * | 2012-06-15 | 2012-10-10 | 徐良骥 | Soil column simulation experiment device aiming at reclaimed soil and coal ash matrix in mining area |
| CN103884635A (en) * | 2014-04-10 | 2014-06-25 | 宁夏大学 | Vertical saturation and non-saturation earth pillar infiltration testing device and testing method thereof |
| CN104316566A (en) * | 2014-10-11 | 2015-01-28 | 武汉工程大学 | Gas sensitive material and preparation method and application thereof |
| CN205280549U (en) * | 2016-01-08 | 2016-06-01 | 三峡大学 | Chang shuitou ground body osmotic coefficient testing arrangement is moved in light perturbation |
| CN105717275A (en) * | 2016-01-28 | 2016-06-29 | 东南大学 | One-dimensional testing device for simulating transport of volatile organic pollutants in soil |
| CN106526135A (en) * | 2017-01-04 | 2017-03-22 | 北京市政路桥股份有限公司 | VOCs simulation test system and VOCs concentration measurement method |
| CN106769747A (en) * | 2016-11-17 | 2017-05-31 | 河海大学 | Experimental rig and its test method that soil body inflation resistance is oozed |
| CN206209420U (en) * | 2016-10-20 | 2017-05-31 | 西安理工大学 | A kind of experimental rig of use geneva bottle method controlling groundwater level balance |
| CN206470267U (en) * | 2017-01-04 | 2017-09-05 | 北京市政路桥股份有限公司 | A kind of VOCs simulation experiment systems |
| CN206862945U (en) * | 2017-05-25 | 2018-01-09 | 浙江海洋大学 | A kind of monitoring analogue means of LNAPLs subsurface three-dimensionals migration process |
| CN206862946U (en) * | 2017-05-25 | 2018-01-09 | 浙江海洋大学 | The device of the three-dimensional migrations of resistivity monitoring LNAPLs |
| CN107589040A (en) * | 2017-08-02 | 2018-01-16 | 三峡大学 | A kind of experimental provision and measuring method for being used to measure soil aeration amount |
| CN107677709A (en) * | 2015-11-13 | 2018-02-09 | 大连民族大学 | With SnO2The method of testing of the semiconductor gas sensor of the controlled humidity of gas sensitive preparation process |
| CN207423248U (en) * | 2017-09-27 | 2018-05-29 | 云南省农业科学院农业环境资源研究所 | A kind of farmland shallow groundwater position, monitoring water quality on line and automatic sampling system |
-
2018
- 2018-04-25 CN CN201810377229.5A patent/CN108645894A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201575963U (en) * | 2009-12-31 | 2010-09-08 | 四川农业大学 | Dynamic monitoring tester for soil moisture and salt in greenhouse |
| CN102721799A (en) * | 2012-06-15 | 2012-10-10 | 徐良骥 | Soil column simulation experiment device aiming at reclaimed soil and coal ash matrix in mining area |
| CN103884635A (en) * | 2014-04-10 | 2014-06-25 | 宁夏大学 | Vertical saturation and non-saturation earth pillar infiltration testing device and testing method thereof |
| CN104316566A (en) * | 2014-10-11 | 2015-01-28 | 武汉工程大学 | Gas sensitive material and preparation method and application thereof |
| CN107677709A (en) * | 2015-11-13 | 2018-02-09 | 大连民族大学 | With SnO2The method of testing of the semiconductor gas sensor of the controlled humidity of gas sensitive preparation process |
| CN205280549U (en) * | 2016-01-08 | 2016-06-01 | 三峡大学 | Chang shuitou ground body osmotic coefficient testing arrangement is moved in light perturbation |
| CN105717275A (en) * | 2016-01-28 | 2016-06-29 | 东南大学 | One-dimensional testing device for simulating transport of volatile organic pollutants in soil |
| CN206209420U (en) * | 2016-10-20 | 2017-05-31 | 西安理工大学 | A kind of experimental rig of use geneva bottle method controlling groundwater level balance |
| CN106769747A (en) * | 2016-11-17 | 2017-05-31 | 河海大学 | Experimental rig and its test method that soil body inflation resistance is oozed |
| CN106526135A (en) * | 2017-01-04 | 2017-03-22 | 北京市政路桥股份有限公司 | VOCs simulation test system and VOCs concentration measurement method |
| CN206470267U (en) * | 2017-01-04 | 2017-09-05 | 北京市政路桥股份有限公司 | A kind of VOCs simulation experiment systems |
| CN206862945U (en) * | 2017-05-25 | 2018-01-09 | 浙江海洋大学 | A kind of monitoring analogue means of LNAPLs subsurface three-dimensionals migration process |
| CN206862946U (en) * | 2017-05-25 | 2018-01-09 | 浙江海洋大学 | The device of the three-dimensional migrations of resistivity monitoring LNAPLs |
| CN107589040A (en) * | 2017-08-02 | 2018-01-16 | 三峡大学 | A kind of experimental provision and measuring method for being used to measure soil aeration amount |
| CN207423248U (en) * | 2017-09-27 | 2018-05-29 | 云南省农业科学院农业环境资源研究所 | A kind of farmland shallow groundwater position, monitoring water quality on line and automatic sampling system |
Non-Patent Citations (4)
| Title |
|---|
| 席劲瑛 等: "《工业源挥发性有机物（VOCs）排放特征与控制技术》", 31 December 2014 * |
| 康绍忠: "《农业水土工程概论》", 30 September 2007, 北京：中国农业出版社 * |
| 王丽: "轻非水相液体(LNAPL)污染土壤多相流实验研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑（月刊）》 * |
| 邢巍巍: "LNAPLs在土体中的运移特性研究", 《中国优秀博硕士学位论文全文数据库（硕士）工程科技I辑（月刊）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398360A (en) * | 2018-05-10 | 2018-08-14 | 北京交通大学 | A kind of experimental rig for studying NAPLs migrations and phase transformation law |
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