CN208721546U - A kind of antifouling barrier materials chemistry compatibility test device in underground - Google Patents
A kind of antifouling barrier materials chemistry compatibility test device in underground Download PDFInfo
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- CN208721546U CN208721546U CN201821216910.3U CN201821216910U CN208721546U CN 208721546 U CN208721546 U CN 208721546U CN 201821216910 U CN201821216910 U CN 201821216910U CN 208721546 U CN208721546 U CN 208721546U
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- 239000000463 material Substances 0.000 title claims abstract description 31
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- 230000008595 infiltration Effects 0.000 claims abstract description 50
- 238000001764 infiltration Methods 0.000 claims abstract description 50
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- 230000003204 osmotic effect Effects 0.000 claims abstract description 38
- 241001672694 Citrus reticulata Species 0.000 claims abstract description 33
- 239000000523 sample Substances 0.000 claims description 100
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- 239000007788 liquid Substances 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000004816 latex Substances 0.000 claims description 18
- 229920000126 latex Polymers 0.000 claims description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 10
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- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 6
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- 238000003032 molecular docking Methods 0.000 claims description 6
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- 239000012466 permeate Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 74
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 20
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Abstract
The utility model discloses a kind of antifouling barrier materials chemistry compatibility test devices in underground.Confining pressure-fixing fabric structure device connects osmotic pressure room, the isolator that becomes a mandarin is connected between osmotic pressure room and press-fixing fabric structure device, stream isolator is connected between osmotic pressure room and base pressure-fixing fabric structure device out, and pH monitor and monitored conductivity instrument are connected to out between stream isolator and osmotic pressure room.The utility model is used to test foul solution or simulating pollution solution infiltrates the variation degree that antifouling barrier material causes its infiltration coefficient, the chemical compatibility of antifouling barrier material is evaluated, provides measuring technology support to optimize antifouling barrier design and improving antifouling barrier service life assessment.
Description
Technical field
The utility model relates to underground environmental pollution prevention and control, and in particular to a kind of underground antifouling barrier materials chemistry is compatible
System safety testing device.
Background technique
China's industrialization and urbanization is quickly grown in recent years, but is also brought serious underground environmental pollution simultaneously and asked
Topic.Leaving after industrial enterprise's resettlement abandons place and Solid Waste Landfills, gas station's underground storage etc. and concentrates waste
All there is serious underground soil and water pollutions for landfill yard, and become the major obstacle that Site development utilizes.Antifouling barrier
Can simply direct prevention and control underground water and soil pollution, water conservation and the common people's is healthy and safe.
After inorganic or organic pollutant the antifouling barrier of Groundwater infiltration, pollutant may be with the antifouling barrier material of soil property
Generation physically or chemically acts on, and changes the engineering characteristic of antifouling barrier material, that is, there is antifouling barrier material and underground water
Chemical compatibility issues.For example, the infiltration coefficient of antifouling barrier material is caused to become larger, and then accelerate pollutant moving in barrier
Speed is moved, antifouling barrier service life is shortened.Therefore, the chemical compatibility for evaluating antifouling barrier material and underground water is Anti-pollution barrier
Hinder one of the key of design.Currently, antifouling barrier design mainly considers the initial engineering characteristic of barrier material, lack chemical compatibility
The test of property and its correlation method, often ignore this important factor of the chemical compatibility of antifouling barrier material, easily lead to anti-
The dirty practical service life of barrier is less than projected life.
Utility model content
The purpose of this utility model is that proposing a kind of antifouling barrier materials chemistry compatibility test device in underground, solve
Antifouling barrier material permeability coefficient test does not consider the problems of that foul solution and antifouling barrier material interact at present, and evaluation is dirty
Dye solution infiltration leads to the variation degree of antifouling barrier material permeability coefficient, provides foundation to optimize the design of antifouling barrier, prevents
The problem of only causing the practical service life of antifouling barrier significantly to shorten because of chemical compatibility deficiency.
It the purpose of this utility model and solves its technical problem and adopts the following technical solutions to realize:
Device includes osmotic pressure room, goes out stream isolator, the isolator that becomes a mandarin, pH monitor, monitored conductivity instrument, confining pressure-
Fixing fabric structure device, base pressure-fixing fabric structure device, press-fixing fabric structure device；Confining pressure-fixing fabric structure device connects osmotic pressure room, becomes a mandarin
Isolator is connected between osmotic pressure room and press-fixing fabric structure device, is flowed isolator out and is connected to osmotic pressure room and base pressure-
Between fixing fabric structure device, pH monitor and monitored conductivity instrument are connected to out between stream isolator and osmotic pressure room.
The osmotic pressure room include confining pressure top cap, latex film, infiltration top cap, casing, plexiglass tent, permeable stone,
Permeable base, confining pressure System drainage/waterflood-transmission line, infiltration top cap become a mandarin pipeline, infiltration top cap exhaust line, permeable base exhaust
Pipeline and permeable base outflow tube line；Confining pressure top cap is mounted on permeable base by plexiglass tent, passes through the fixed shape of screw rod
At confining pressure system；Casing is mounted on permeable base, and sample and permeable stone are mounted in casing, and sample upper and lower side is placed permeable
Latex film is enclosed between the side periphery and casing of stone, sample and permeable stone, casing top is equipped with infiltration top cap, O-ring
Latex film is fixed on permeable base and infiltration top cap, closed osmosis system is formed；The permeable stone of sample top surface is through permeating
The top cap pipeline that becomes a mandarin connect with the isolator that becomes a mandarin and communicates, and the permeable stone of sample bottom surface is isolated through permeable base outflow tube line with stream is gone out
Device connection communicates, and confining pressure system is connect through confining pressure System drainage/waterflood-transmission line with confining pressure-fixing fabric structure device.
Dial gauge is installed, dial gauge bottom end is connected to infiltration top cap top after passing through confining pressure top cap in the confining pressure top cap
Face, by permeating the variation of the vertical displacement acquisition specimen height of top cap during dial gauge monitoring and test when test.
It is described go out stream isolator it is identical with the spacer structures that become a mandarin, including upper pressure chamber, lower part solution cavity and
The rubber membrane between the two positioned at upper pressure chamber and lower part solution cavity；Upper pressure chamber include upper three-way valve, top cap and on
Portion's pressure chamber cylinder；Upper pressure chamber cylinder upper end is tightly connected top cap, and top cap top surface is equipped with three-way valve, upper three-way valve its
Middle Single port is communicated to upper pressure chamber, and in addition two-port is respectively exhaust/water filling port, pressure supply mouth；Lower part solution cavity includes bottom
Seat, lower part solution cavity cylinder and lower three-way valve；Lower part solution cavity cylinder lower end and pedestal are tightly connected, and base end face is equipped with down three
Port valve door, wherein one end is communicated to lower part solution cavity to lower three-way valve, and in addition two-port respectively adopts liquid/leakage fluid dram, sample connects
Mouthful；Upper pressure chamber cylinder lower end and the docking of lower part solution cavity cylinder upper end, and the sealed set rubber membrane at docking, by isolator spiral shell
Bar is fixed together by upper pressure chamber cylinder and lower part solution cavity cylinder.
The rubber membrane is no permeability, strong retractility, material resistant to chemical etching, not only acts as isolation intraluminal fluid up and down
The effect of body can also nondestructively transmit the pressure of two-way pressure intracavity liquid.
The pH monitor and monitored conductivity instrument through flow cell be connected to out stream isolator and osmotic pressure room it
Between pipeline on；PH monitor includes pH probe and pH value electronic console, and monitored conductivity instrument includes conductivity probe and electricity
Conductance electronic console, flow cell have an inner cavity and three interfaces, three interfaces be respectively probe interface, enter stream interface and
Stream interface out, probe interface install pH probe/conductivity probe, enter stream interface and stream interface is separately connected osmotic pressure room out
Permeable base outflow tube line and out stream isolator；Penetrate the inner cavity that flow liquid flows through flow cell, by pH in flow cell probe/
Conductivity probe monitors the pH or conductivity for penetrating flow liquid.
The beneficial effects of the utility model and advantage mainly have the following:
(1) it can be used for the chemical compatibility test of antifouling barrier material, evaluation foul solution infiltration causes barrier material to seep
The variation degree of saturating coefficient, optimizes antifouling barrier design, improves antifouling barrier long service Performance Evaluation.
(2) it becomes a mandarin and isolator and goes out stream isolator there is supply percolating solution and isolation percolating solution and press-volume control
Device processed and the effect of base pressure-fixing fabric structure avoid press-fixing fabric structure device and base pressure-fixing fabric structure device and percolating solution direct
It contacts and causes controller corrosion and damage, while nondestructively transmitting the fluid pressure of upper and lower cavity.
(3) pH monitor and monitored conductivity instrument can during the test real-time monitoring osmosis system go out flow liquid pH value and
Whether conductivity reaches stable state with the chemical physical action judged between antifouling barrier material and percolating solution.
(4) confining pressure system is combined with the independent osmosis system of sample in osmotic pressure room, is solved foul solution infiltration and is made
The problem of leaking at volume of sample diminution, solution from sample side wall, avoids infiltration coefficient test result bigger than normal.
Detailed description of the invention
Attached drawing 1 is test device entirety composition schematic diagram.
Attached drawing 2 is osmotic pressure room composition schematic diagram.
Attached drawing 3 is percolating solution isolating device composition schematic diagram.
Attached drawing 4 is flow cell thin portion schematic diagram.
Attached drawing 5 is casing thin portion schematic diagram.
Attached drawing 6 is that embodiment penetrates the pH of flow liquid with solution infiltration capacity variation diagram.
Attached drawing 7 is that embodiment penetrates the conductivity of flow liquid with solution infiltration capacity variation diagram.
Attached drawing 8 is embodiment soil-swelling soil sample infiltration coefficient with solution infiltration capacity variation diagram.
In figure: 1, osmotic pressure room；2, go out stream isolator；3, become a mandarin isolator；4, pH monitor；5, monitored conductivity
Instrument；6, confining pressure-fixing fabric structure device；7, base pressure-fixing fabric structure device；8, press-fixing fabric structure device；9, computer；10, flow cell；11,
Dial gauge；12, pressure chamber's exhaust outlet；13, confining pressure top cap；14, latex film；15, top cap is permeated；16, plexiglass tent；17, O-shaped
Circle；18, casing；19, permeable stone；20, sample；21, screw rod；22, permeable base；23, confining pressure System drainage/waterflood-transmission line；24,
Infiltration top cap becomes a mandarin pipeline；25, top cap exhaust line is permeated；26, permeable base exhaust line；27, permeable base outflow tube line；
28, upper three-way valve；29, exhaust/water filling port；30, pressure supply mouth；31, top cap；32, isolator screw rod；33, upper pressure chamber；
34, upper pressure chamber cylinder；35, rubber membrane；36, lower part solution cavity；37, lower part solution cavity cylinder；38, pedestal；39, liquid/drain is adopted
Mouthful；40, sample interface；41, lower three-way valve；42, go out stream interface；43, enter stream interface；44, probe interface；45, groove；46,
Fluid-through port；47, vertical inner passage；48, ring-shaped inner part channel.
Specific embodiment
Utility model is described in further detail with specific embodiment with reference to the accompanying drawing:
As shown in Figure 1, the utility model specific implementation comprising osmotic pressure room 1, go out stream isolator 2, the isolator 3 that becomes a mandarin,
PH monitor 4, monitored conductivity instrument 5, confining pressure-fixing fabric structure device 6, base pressure-fixing fabric structure device 7, press-fixing fabric structure device 8, electricity
Brain 9 and flow cell 10.The isolator 3 that becomes a mandarin is connected between osmotic pressure room 1 and press-fixing fabric structure device 8, flows isolator 2 out
And flow cell 10 is connected between osmotic pressure room 1 and base pressure-fixing fabric structure device 7, pH monitor 4 and monitored conductivity instrument 5 are equal
It is connected to out on the pipeline between stream isolator 2 and osmotic pressure room 1 through flow cell 10, stream 2 He of isolator is gone out in specific implementation
It is set on pipeline between osmotic pressure room 1 there are two flow cell 10, pH monitor 4 and conductance is installed respectively on two flow cells 10
Rate monitor 5.Three pressure versus volume controllers pass through data line and connect with computer 9, control pressure and acquisition, note by computer 9
Record percolating solution data on flows.
In the utility model, pressure versus volume controller is computer-controlled hydrostatic sensor, both can be with liquid with precise control
Pressure, and can recorde fluid pressure and liquid volume variation.Three pressure versus volume controllers of osmotic pressure room configuration, one
For pressure versus volume controller for applying confining pressure, other two pressure versus volume controller is respectively used to Control Assay top pressure
(press), sample base pressure (base pressure) and record flow into the amount of solution of sample and the percolating solution flow of effluent test sample.
The isolator 3 that becomes a mandarin is arranged between osmotic pressure room 1 and press-fixing fabric structure device 8, flows the setting of isolator 2 out and exists
Between osmotic pressure room 1 and base pressure-fixing fabric structure device 7, the effect of supply percolating solution is not only acted as, can also effectively prevent seeping
Saturating solution flows into controller and causes to it corrosion-damaged.
As shown in Figure 1 and Figure 5, pH monitor 4 includes pH probe and pH value electronic console, monitored conductivity instrument 5 include
Conductivity probe and electro conductivity sub-display, flow cell 10 have an inner cavity and are communicated to three interfaces of inner cavity, and three
Interface is respectively probe interface 44, enters stream interface 43 and out stream interface 42, and probe interface 44 installs pH probe or conductivity probe,
Enter stream interface 43 and stream interface 42 is separately connected osmotic pressure room 1 and goes out stream isolator 2, inflow and stream for percolating solution out
Out；When penetrating flow liquid and flowing through the inner cavity of flow cell 10, pH probe or conductivity probe in flow cell 10 can be monitored and be penetrated
Flow liquid pH and conductivity.The number of pH value electronic console and the surveyed pH value of solution of electro conductivity sub-display real-time display, conductivity
Value.PH monitor 4 and monitored conductivity instrument 5 can real-time monitoring is permeated through sample in solution penetration testing the pH for going out flow liquid and
Conductivity, can be used for judging whether the chemical physical action between antifouling barrier material and percolating solution reaches stable state.
Computer 9 is connect by data line with volume-pressure controller, so that the control of pressure and the acquisition of data can
To be arranged and be achieved by computer completely.
As shown in Fig. 2, osmotic pressure room 1 includes confining pressure top cap 13, latex film 14, infiltration top cap 15, casing 18, organic glass
Glass cover 16, permeable stone 19, permeable base 22, confining pressure System drainage/waterflood-transmission line 23, infiltration top cap become a mandarin pipeline 24, infiltration top
Cap exhaust line 25, permeable base exhaust line 26 and permeable base outflow tube line 27；Confining pressure top cap 13 passes through plexiglass tent
16 are mounted on permeable base 22, form confining pressure system by the fixation of screw rod 21；Casing 18 is mounted on permeable base 22, sample
20 and permeable stone 19 in the casing 18,20 upper and lower side of sample places permeable stone 19, the side of sample 20 and permeable stone 19
Latex film 14 is enclosed between surrounding and casing 18,18 top of casing is equipped with infiltration top cap 15, and O-ring 17 consolidates latex film 14
It is scheduled on permeable base 22 and infiltration top cap 15, forms the osmosis system of autonomous closure on sample periphery.20 top surface of sample it is saturating
Water stone 19 is permeated the top cap pipeline 24 that becomes a mandarin and connect and communicate with the isolator 3 that becomes a mandarin, and the permeable stone 19 of 20 bottom surface of sample is through infiltration bottom
Seat outflow tube line 27 connect with stream isolator 2 out and communicates, and confining pressure system is through confining pressure System drainage/waterflood-transmission line 23 and confining pressure-body
Plot controller 6 connects.Filter paper is placed in specific implementation between sample and permeable stone, prevents permeable stone from being blocked up by tiny soil particle
Plug；
In specific implementation, the permeable stone 19 of lower section is fixed on the permeable base 22 in casing 18, the permeable stone 19 of top
It is active in casing 18.
Confining pressure-fixing fabric structure device 6 is controlled by computer 9 and applies pressure into confining pressure system as confining pressure, is controlled by computer 9
Base pressure processed-fixing fabric structure device 7 applies pressure as base pressure to the lower section permeable stone 19 of osmosis system, passes through the control of computer 9 press-
Fixing fabric structure device 8 applies pressure as press to the top permeable stone 19 of osmosis system.
In order to exclude gas and control osmotic pressure, being embodied in infiltration top cap and pedestal respectively has an inlet tube and one
Exhaust pipe, pipeline is by valve control switch.
As shown in Fig. 2, being equipped with dial gauge 11 in confining pressure top cap 13,11 bottom end of dial gauge connects after passing through confining pressure top cap 13
To infiltration 15 top surface of top cap, the displacement that moves up and down by permeating top cap 15 during 11 monitoring and test of dial gauge is tried
The variation of 20 height of sample.
The confining pressure system of the utility model passes through latex film 14 and osmosis system combination outside sample 20, so that latex film 14
Limit sample 20 in solution can not be permeable from 20 side periphery of sample, solve solution infiltration cause volume of sample reduce,
The problem of solution is leaked from sample side wall, avoids infiltration coefficient test result bigger than normal.
The diameter of permeable stone 19 is identical as sample 20, and the infiltration coefficient of permeable stone 19 is greater than 10-5cm/s。
As shown in figure 3, stream isolator 2 is identical with 3 structure of isolator that becomes a mandarin out, it is molten including upper pressure chamber 33, lower part
Sap cavity 36 and the rubber membrane 35 between the two positioned at upper pressure chamber 33 and lower part solution cavity 36；Upper pressure chamber 33 includes upper
Three-way valve 28, top cap 31 and upper pressure chamber cylinder 34；34 upper end of upper pressure chamber cylinder is tightly connected top cap 31,31 top surface of top cap
Three-way valve 28 is installed, wherein Single port is communicated to upper pressure chamber 33 to upper three-way valve 28, and in addition two-port is respectively
Exhaust/water filling port 29, pressure supply mouth 30；Lower part solution cavity 36 includes pedestal 38, lower part solution cavity cylinder 37 and lower three-way valve 41；Under
37 lower end of portion's solution cavity cylinder and pedestal 38 are tightly connected, and 38 bottom surface of pedestal is equipped with lower three-way valve 41, lower three-way valve 41 its
Middle one end is communicated to lower part solution cavity 36, and in addition two-port is respectively to adopt liquid/leakage fluid dram 39, sample interface 40.Upper pressure chamber
Deionized water or distilled water are filled, lower part solution cavity fills percolating solution, and rubber can effectively resist the erosion of percolating solution.Upper pressure
34 lower end of chamber cylinder and the docking of 37 upper end of lower part solution cavity cylinder, and the sealed set rubber membrane 35 at docking, by isolator screw rod 32
Upper pressure chamber cylinder 34 and lower part solution cavity cylinder 37 is fixed together.Rubber membrane 35 is strong without permeability, retractility, not only act as every
Effect from upper and lower cavity liquid can also nondestructively transmit the pressure of liquid in upper and lower cavity.
Two of top three-way valve 28 outlets are exhaust outlet/water filling port 29 and pressure supply mouth 30, the two of lower part triple valve 41
A outlet is to adopt liquid/leakage fluid dram 39 and sample interface 40.The isolator 3 that becomes a mandarin is separately connected with the pressure supply mouth 30 for going out stream isolator 2
Press-fixing fabric structure device 8 and base pressure-fixing fabric structure device 7, sample interface 40 are separately connected become a mandarin pipeline and the stream out of osmosis system
Pipeline.Injection percolating solution and discharge percolating solution body are both needed to open simultaneously exhaust/water filling port 29 of upper pressure chamber and lower part
Solution cavity adopts liquid/leakage fluid dram 39.
In specific implementation, the lower part solution cavity for the isolator 3 that becomes a mandarin is provided with percolating solution, and the lower part for flowing isolator 2 out is molten
Liquid received therein penetrates flow liquid.
As shown in figure 4, flow cell 10 is made of pmma material, can not only prevent from being saturated solution erosion, but also can avoid
Influence the test result of pH and conductivity.Due to the outflow tube linear diameter very little of osmosis system, it can not be mounted directly probe, so
Flow cell not only acts as the effect of installation pH/ conductivity probe, and will not influence out the pressure of stream amount of solution and sample bottom.
There are three interfaces in total for flow cell 10: a side interface is used to install pH/ conductivity electrode, and another side interface and upper interface are used for
Percolating solution flows in and out.Since atmospheric density is smaller, after percolating solution flows into, air is squeezed the top of falling flow cell,
Prevent inside from having air impact measurement convenient for flow cell is discharged in gas in the outflow port of top setting percolating solution.Flow cell
The size of 10 inner cavities need to be designed according to the performance of probe, and the amount of solution for guaranteeing that inner cavity can accommodate is no less than needed for probe measurement
Minimal sample amount.
As shown in figure 5, casing 18 is made of pmma material.If sample 20 is softer before consolidation, casing 18 can
Support is provided for sample 20, prepares the sample of forming.Vertical inner passage 47 on 18 inner cavity of casing makes ring-shaped inner part channel 48
It is interconnected, and is connected with fluid-through port 46.In the dress sample stage, when extracting air from fluid-through port 46, vertical inner passage 47 and ring
Shape inner passage 48 can effectively go out the air transmitted between 18 inner cavity of latex film 14 and casing, and tensing latex film 14 makes it
It is close to 18 inner wall of casing.Water in consolidation, back-pressure saturation and penetration stage, pressure chamber can lead directly to casing 18 by fluid-through port 46
Vertical inner passage 47 and ring-shaped inner part channel 48, to sample 20 transmit confining pressure.Groove close to casing 18 top and bottom
45, the position for placing permeable stone 19 is provided, the height of sample 20 is accurately controlled when filling sample.
The utility model embodiment is as follows:
The present embodiment is the antifouling barrier material soil-bentonitic chemical compatibility of evaluation, the soil-bentonite completed to consolidation
Sample (consolidation stress=69kPa) is permeated, and percolating solution is 100mM NaCl.By obtaining soil-swelling in process of osmosis
The infiltration coefficient variation of soil, with soil-swelling soil sample initial infiltration coefficients comparison, evaluating solution infiltration leads to soil-bentonite
The variation degree of material permeability coefficient.
1. installing sample
Two diameters filter paper identical with specimen finish is cut, the permeable stone 19 and filter paper on upper layer are soaked with percolating solution
Bubble, the permeable stone 19 and filter paper of lower layer are impregnated with deionized water.
Latex film 14 is strutted and is covered in the inner cavity of casing 18, hose is connected on the fluid-through port 46 of casing 18, will wash ear
Ball is connected to the other end pumping of hose, so that latex film 14 is close to 18 inner cavity of casing, clamps hose with tongs.In permeable base
On be sequentially placed permeable stone 19 and filter paper, casing 18 is placed on permeable base 22, latex film 14 is fixed on infiltration by O-ring 17
On saturating permeable base 22.In osmotic pressure room 1, configured soil-bentonite is fitted into casing, glass during filling sample
Glass stick is smash even repeatedly.After sample 20 installs, then it is sequentially placed filter paper, permeable stone 19 and infiltration top cap 15.O-ring 17 is by latex film
14 are fixed in infiltration top cap 15, form individual osmosis system, make the confining pressure isolation of system outside sample and latex film 14.It is made
Soil-bentonite specimen finish and height be 70mm.
Will infiltration top cap become a mandarin pipeline 24 and infiltration top cap exhaust line 28 be connected to infiltration top cap 15 on, on pedestal 9
It is sequentially installed with machine cloche 16 and confining pressure top cap 13, forms confining pressure system.Osmotic pressure room is filled into deionized water or originally
Water.Deionized water is injected in confining pressure-fixing fabric structure device 6, is vented repeatedly until without visible bubble in bubble in the deionized water of discharge.It will
Confining pressure-fixing fabric structure device 6 is connect with the confining pressure of confining pressure system System drainage/waterflood-transmission line 23.
The stream isolator 2. connection becomes a mandarin and goes out
Percolating solution is 100mM NaCl solution: pH value 6.2, conductivity value 1.16S/m.
Open simultaneously out the exhaust/water filling port 29 and lower part solution of stream isolator 2 and the 3 upper pressure chamber 33 of isolator that becomes a mandarin
Chamber 36 adopts liquid/leakage fluid dram 39, fills the water into top pressure chamber 33, and injection 100mM NaCl is molten in portion's solution cavity 36 still further below
Liquid.Base pressure-fixing fabric structure device 7 and press-fixing fabric structure device 8 are connected respectively to out to the confession of stream isolator 2 and the isolator 3 that becomes a mandarin
Mouth 30 is pressed, and the infiltration top cap that sample interface 40 of the isolator 3 with stream isolator 2 out that becomes a mandarin is connected to osmotic pressure room 1 is entered
Flow tube line 24 and permeable base outflow tube line 27.
3. connecting pH monitor and monitored conductivity instrument
PH probe and conductivity probe are mounted on flow cell 10, flow cell 10 enters stream interface 43 and out stream interface 42
With the permeable base outflow tube line 27 of osmotic pressure room 1 and out, stream isolator 2 is connected respectively, fills deionized water outlet side by side
Body.Flow cell is mounted on to the position close with osmotic pressure room as far as possible, to test out the pH and conductivity of flow liquid in time.
4. osmosis system is vented
The confining pressure of confining pressure system is Pc, the press of osmosis system is Pt, base pressure Pb.P is arranged in adjusting controllerc=
30kPa, Pt=Pb=20kPa makes 100mM NaCl solution full of osmosis system, until all visible bubble in bubble are all from infiltration top cap
It becomes a mandarin and removes in pipeline 24 and permeable base outflow tube line 27.
5. sample back-pressure is saturated
Confining pressure P in back-pressure saturation process is arranged in controllerc, press PtWith base pressure Pb, while increasing confining pressure, press and base pressure
Back-pressure is applied to soil-swelling soil sample.After increasing pressure every time, pressure was further continued for increasing pressure after 2 hours at this stage for maintenance,
Back-pressure saturation occurs completely after 10 hours, and soil-swelling soil sample reaches saturation state.
6. sample consolidates
P is arranged in controllerc=414kPa, Pt=Pb=345kPa, maintains this pressure state 12 hours.Top cap after 12 hours
12 and pedestal 9 outflow be lower than 1 X 10-10M/s, consolidation are completed.
7. solution permeates
P is arranged in controllerc=414kPa, Pt=352kPa, Pb=338kPa carries out the long-time under 69kPa consolidation pressure
Solution process of osmosis.During permeability test, pH probe and conductivity probe carry out real-time monitoring to percolating solution, will seep
The pH of saturating solution and the initial pH and conductivity of conductivity and 100mM NaCl solution are compared, as a result as shown in Figure 6 and Figure 7.
8. sample infiltration coefficient is tested
The pressure that four groups of permeability tests are arranged in controller is as follows:
1)Pc=414kPa, Pt=352kPa, Pb=338kPa
2)Pc=414kPa, Pt=354kPa, Pb=336kPa
3)Pc=414kPa, Pt=356kPa, Pb=334kPa
4)Pc=414kPa, Pt=358kPa, Pb=332kPa
Soil-swelling soil sample infiltration coefficient is as shown in Figure 8 with the variation of 100mM NaCl solution seepage discharge.It can in Fig. 8
See, after 100mM NaCl solution flows into about 15 sample pore volumes of soil-swelling soil sample, NaCl solution and soil-swelling
Chemical reaction between soil sample reaches chemistry balance state.When 100mM NaCl solution flows into soil-examination of swelling soil sample 20
After sample pore volume, the infiltration coefficient of sample no longer changes with infiltrating for NaCl solution.Final infiltration coefficient is 1.02
ⅹ10-9M/s increases 12 times compared to initial infiltration coefficient.
Above-mentioned specific embodiment is used to illustrate the utility model, rather than limits the utility model,
In the spirit and scope of protection of the claims of the utility model, to any modifications and changes that the utility model is made, all fall
Enter the protection scope of the utility model.
Claims (5)
1. a kind of antifouling barrier materials chemistry compatibility test device in underground, it is characterised in that: comprising osmotic pressure room (1), go out
Flow isolator (2), the isolator that becomes a mandarin (3), pH monitor (4), monitored conductivity instrument (5), confining pressure-fixing fabric structure device (6), bottom
Pressure-fixing fabric structure device (7), press-fixing fabric structure device (8)；Confining pressure-fixing fabric structure device (6) connection osmotic pressure room (1), becomes a mandarin
Isolator (3) is connected between osmotic pressure room (1) and press-fixing fabric structure device (8), is flowed isolator (2) out and is connected to infiltration
Between pressure chamber (1) and base pressure-fixing fabric structure device (7), pH monitor (4) and monitored conductivity instrument (5) are connected to out stream isolation
Between device (2) and osmotic pressure room (1).
2. the antifouling barrier materials chemistry compatibility test device in a kind of underground according to claim 1, it is characterised in that: institute
The osmotic pressure room (1) stated includes confining pressure top cap (13), latex film (14), infiltration top cap (15), plexiglass tent (16), casing
(18), permeable stone (19), permeable base (22), confining pressure System drainage/waterflood-transmission line (23), infiltration top cap become a mandarin pipeline (24),
Permeate top cap exhaust line (25), permeable base exhaust line (26) and permeable base outflow tube line (27)；Confining pressure top cap (13)
It is mounted on permeable base (22) by plexiglass tent (16) and forms confining pressure system；Casing (18) is mounted on permeable base (22)
On, in casing (18), sample (20) upper and lower side places permeable stone (19), sample for sample (20) and permeable stone (19)
(20) it is enclosed between the side periphery of permeable stone (19) and casing (18) latex film (14), casing (18) top is equipped with infiltration
Cap (15) thoroughly form closed osmosis system；The permeable stone (19) of sample (20) top surface becomes a mandarin pipeline (24) through permeating top cap
It connect and communicates with the isolator that becomes a mandarin (3), the permeable stone (19) of sample (20) bottom surface is through permeable base outflow tube line (27) and stream out
Isolator (2) connection communicates, and confining pressure system connects through confining pressure System drainage/waterflood-transmission line (23) and confining pressure-fixing fabric structure device (6)
It connects.
3. the antifouling barrier materials chemistry compatibility test device in a kind of underground according to claim 2, it is characterised in that: institute
It states and is equipped on confining pressure top cap (13) dial gauge (11), dial gauge (11) bottom end is connected to infiltration top after passing through confining pressure top cap (13)
Cap (15) top surface, the vertical displacement by permeating top cap (15) during dial gauge (11) monitoring and test obtain sample (20)
The variation of height.
4. the antifouling barrier materials chemistry compatibility test device in a kind of underground according to claim 1, it is characterised in that: institute
Stream isolator (2) out stated is identical with the isolator that becomes a mandarin (3) structure, includes upper pressure chamber (33), lower part solution cavity (36)
And the rubber membrane (35) between upper pressure chamber (33) and lower part solution cavity (36)；Upper pressure chamber (33) includes upper three
Port valve door (28), top cap (31) and upper pressure chamber cylinder (34)；Upper pressure chamber cylinder (34) upper end is tightly connected top cap (31), top
Cap (31) top surface is equipped with three-way valve (28), and wherein Single port is communicated to upper pressure chamber (33) to upper three-way valve (28),
In addition two-port is respectively exhaust/water filling port (29), pressure supply mouth (30)；Lower part solution cavity (36) includes that pedestal (38), lower part are molten
Sap cavity cylinder (37) and lower three-way valve (41)；Lower part solution cavity cylinder (37) lower end and pedestal (38) are tightly connected, pedestal (38) bottom
Face is equipped with lower three-way valve (41), and wherein one end is communicated to lower part solution cavity (36) to lower three-way valve (41), in addition two-port
Respectively adopt liquid/leakage fluid dram (39), sample interface (40)；Upper pressure chamber cylinder (34) lower end and lower part solution cavity cylinder (37) upper end
Docking, and sealed set rubber membrane (35) at docking.
5. the antifouling barrier materials chemistry compatibility test device in a kind of underground according to claim 1, it is characterised in that: institute
The pH monitor (4) and monitored conductivity instrument (5) stated are connected to out stream isolator (2) and osmotic pressure room through flow cell (10)
(1) on the pipeline between；PH monitor (4) includes pH probe and pH value electronic console, and monitored conductivity instrument (5) includes conductance
Rate probe and electro conductivity sub-display, flow cell (10) have an inner cavity and three interfaces, and three interfaces are respectively to pop one's head in
Interface (44) enters stream interface (43) and out stream interface (42), and probe interface (44) installs pH probe/conductivity probe, becomes a mandarin and connect
Mouth (43) and out stream interface (42) are separately connected the permeable base outflow tube line (27) of osmotic pressure room (1) and go out stream isolator
(2)；The inner cavity that flow liquid flows through flow cell (10) is penetrated, is seeped by the pH probe in flow cell (10)/conductivity probe monitoring
Appear the pH or conductivity of flow liquid.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982325A (en) * | 2018-07-30 | 2018-12-11 | 浙江大学 | The antifouling barrier materials chemistry compatibility test device and method in underground |
| CN111022917A (en) * | 2019-12-31 | 2020-04-17 | 同济大学 | Constant pressure, volume and rate high pressure gas injection system |
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2018
- 2018-07-30 CN CN201821216910.3U patent/CN208721546U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982325A (en) * | 2018-07-30 | 2018-12-11 | 浙江大学 | The antifouling barrier materials chemistry compatibility test device and method in underground |
| CN111022917A (en) * | 2019-12-31 | 2020-04-17 | 同济大学 | Constant pressure, volume and rate high pressure gas injection system |
| CN111022917B (en) * | 2019-12-31 | 2021-12-07 | 同济大学 | Constant pressure, volume and rate high pressure gas injection system |
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