CN109060598A - A kind of filling fracture solute transfer monitoring test device and method - Google Patents
A kind of filling fracture solute transfer monitoring test device and method Download PDFInfo
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- CN109060598A CN109060598A CN201810918589.1A CN201810918589A CN109060598A CN 109060598 A CN109060598 A CN 109060598A CN 201810918589 A CN201810918589 A CN 201810918589A CN 109060598 A CN109060598 A CN 109060598A
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- 238000012546 transfer Methods 0.000 title claims abstract description 42
- 238000012544 monitoring process Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 163
- 229910021607 Silver chloride Inorganic materials 0.000 claims abstract description 35
- 239000004576 sand Substances 0.000 claims abstract description 29
- 238000012806 monitoring device Methods 0.000 claims abstract description 17
- 239000003381 stabilizer Substances 0.000 claims abstract description 11
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 23
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 23
- 239000003344 environmental pollutant Substances 0.000 claims description 19
- 231100000719 pollutant Toxicity 0.000 claims description 19
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 15
- 239000011780 sodium chloride Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000000872 buffer Substances 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000013401 experimental design Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 239000008202 granule composition Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000001934 delay Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims 2
- 238000007405 data analysis Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 238000011156 evaluation Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000003542 behavioural effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
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Abstract
A kind of filling fracture solute transfer monitoring test device and method is suitable for filling fracture medium solute transfer and monitors and identify.Including filling fracture model and monitoring device.The filling fracture model by die body, for/water outlet and constant-current stabilizer, monitoring device, filling fracture is simulated by filling river sand to directional light slip gap die body, Ag-AgCl electrode is laid on crack, it is detected in crack by monitoring device because solute transfer causes the dynamic change of filling fracture natural potential parameter to analyze the solute transfer state in not visible crack, foundation is provided for the pollution monitoring of underground medium solute, evaluation and prediction, the characteristics of it is efficient, convenient that its method has, strong operability.
Description
Technical field
The invention mainly relates to a kind of filling fracture solute transfer monitoring test device and methods, are particularly suitable for crack Jie
The monitoring and pollution level, status evaluation of solute transfer process status in matter belong to the inspective regulation of groundwater environment pollution
Field.
Background technique
As mankind's activity is constantly goed deep into underground, various pollutions also gradually aggravate the threat of underground deep crevice water.
Transport of solute in fissuted medium has been attached great importance, and becomes the fields such as Geological Engineering, oil gas engineering, environmental project
The hot issue of water environment scientific research.Natural rock cranny is often filled with the pore materials such as sand, mud, and the presence of charges will
It is significant to change water flow and solute transfer characteristic in crack.Currently, about the process monitoring of water vein solute transfer and identification
Aspect, main or sampling and testing and tracer technique, but this is difficult to reflect the seepage flow of seepage state inside crack, different parts
The real-time behavioral characteristics of otherness and solute transfer.Natural potential is in seepage action of ground water and solute transfer back analysis and identification
Aspect has significant advantage.Therefore, it is badly in need of research and development and is suitable for filling fracture solute transfer dynamic monitoring tester, acquisition is filled
Fill out that crack solute transfer is convenient, non-destructive monitoring recognition methods, the research for filling fracture rock mass transport of solute provides new think of
Road and means.
Summary of the invention
The object of the present invention is to provide a kind of simple and convenient, strong operability, it is low in cost, to monitoring medium without damage,
The good filling fracture solute transfer monitoring test device and method of monitoring effect.
To achieve the above object, filling fracture solute transfer of the invention monitoring system monitoring system, including die body,
For/water outlet and constant-current stabilizer, monitoring device；Wherein die body both ends are respectively equipped with detachable confession/water outlet and constant-current stabilizer, mould
Type main body is connected with monitoring device by data transmission wires；
The die body includes model of fissuration, and model of fissuration includes two pieces of poly (methyl methacrylate) plates disposed in parallel, and two pieces have
There are crack perforation left and right between machine glass plate, it is equipped with charges in crack, covers plastic packaging and solid using poly (methyl methacrylate) plate up and down
It is fixed, the equal identical electrode hole of seven sizes of row's spacing is set on wherein one piece of poly (methyl methacrylate) plate, in each electrode hole
It is respectively provided with Ag-AgCl electrode and fixed plastic packaging, Ag-AgCl electrode tail end is connected by data transmission wires with monitoring device,
For monitoring solute transfer in crack, away from water inlet end baffle-box 20mm be arranged solution injection ports, it is molten for injecting sodium chloride
Liquid；
Confession/the water outlet and constant-current stabilizer include water inlet system and outlet system, and water inlet system includes intake chamber, water outlet
Slot, water inlet end baffle-box and water outlet buffer case apparatus；The first overflow baffle is vertically equipped in intake chamber, the first overflow baffle will
Space is divided into the first rhone and the first overflow groove in intake chamber, and first row bottom of gullet is vertically additionally provided with the first drainpipe,
First spilling water trench bottom is respectively equipped with the water inlet pipe of two same models, and a water inlet pipe connects with water source, another water inlet pipe
It is connected with water inlet end baffle-box, water inlet end baffle-box bottom is connected by water inlet pipe with the first overflow groove, water inlet pipe
On be respectively equipped with valve and flowmeter, water inlet end baffle-box chamber poly (methyl methacrylate) plate is equipped with and size phase in crack in model of fissuration
With bar shaped water inlet, water inlet end baffle-box communicates by the water inlet with model of fissuration, equipped with the in water inlet end baffle-box
Water inlet end baffle-box is divided into two chambers, is respectively equipped with downtake pipe at the top of two chambers by one flow distribution plate, the first flow distribution plate,
First flow distribution plate is equipped with multiple through-holes；
Outlet system includes the water outlet baffle-box connecting with model of fissuration, the chamber poly (methyl methacrylate) plate of water outlet baffle-box
It is equipped with the bar shaped water outlet with model of fissuration same size, model of fissuration is connected by water outlet and water outlet baffle-box chamber
It is logical, it is equipped with the second flow distribution plate in the middle part of the baffle-box of water outlet by water outlet baffle-box and is divided into two chambers, the second flow distribution plate is equipped with
Multiple through-holes, the two chambers of water outlet baffle-box are respectively equipped with second row stomata, water end (W.E.) baffle-box bottom by outlet pipe with
Effluent trough is connected, and is equipped in effluent trough and incites somebody to action with the second overflow baffle mutually level in intake chamber, second overflow baffle
Effluent trough is divided into the second overflow groove and the second rhone, and outlet pipe is connected with the second spilling water trench bottom, second row bottom of gullet
Equipped with the second drainpipe；
Monitoring device includes the multi-Channels Data Acquisition connecting with Ag-AgCl electrode, multi-Channels Data Acquisition and number
It is connected according to processor.
The poly (methyl methacrylate) plate model of fissuration design size is that length × height × width is the wide 5mm of 1200 × 200 × gap, length to height ratio
Example degree is higher than 6:1, and gap width is modified according to demand.
Charges are equipped in crack between two pieces of poly (methyl methacrylate) plates of the model of fissuration, charges select alluvial river
Sand is configured after the screening of grain group according to experimental design, and with effective grain size d10: the grain diameter of particulate soil layer is less than should
Partial size sand accounts for the 10% of total sand weight again, as adjustment filling composition granule composition reduced parameter, be respectively configured multiple groups it is non-homogeneous and
Each range partial size sand grains is mixed with the good sand grains of grade and is added in model of fissuration by uniform pack object, and matches the undesirable sand of grade
Grain is directly added into model of fissuration.
The conducting wire of the Ag-AgCl electrode is data transmission wires, and data collecting instrument is that the intelligence of Australian import can
Programming data collector DT85, the data processor are computer.
A kind of filling fracture solute transfer method of real-time of filling fracture solute transfer monitoring test system, including such as
Lower step:
A. material fill: model of fissuration and water inlet end baffle-box are installed, then by model with water inlet end baffle-box for
Under, it is disposed vertically and fixes, introduce the water into the model of fissuration from water inlet pipe to after 1/2 or so, stop water inlet, will slowly fill
Object is filled out from other end filling model of fissuration, filling charges while slight vibration model are accomplished to keep charges closely knit as far as possible, with
The continuous filling of sand sample, the water in model of fissuration is slowly discharged from upper end crack mouthful with the filling of charges, until mould
It is full of charges in type, may make the sand sample bubble of charges in model greatly to reduce in this way, make the sand sample of charges
It is closely knit, water outlet baffle-box is installed to the water outlet of model of fissuration after the completion of charges filling；
B. the model of fissuration that water inlet end baffle-box and water outlet baffle-box will be installed, is placed horizontally at work top, benefit
Intake chamber is connected with the water inlet end baffle-box with PVC transparent hose, same method delays effluent trough and the water outlet
It rushes case to be connected, water inlet end baffle-box, model of fissuration, water outlet baffle-box is placed on horizontal experimental bench after being completed, it is fixed
The overflow horizontal plane of the effluent trough is higher than within the scope of model of fissuration 10cm-30cm, further according to the head difference of requirement of experiment, control
The overflow elevation of water of intake chamber is within the scope of 10cm-70cm；
C., the natural potential data type of sampling and the time of sampling triggering are set in data collecting instrument by computer；
D. in the solution injection ports of filling fracture upstream, i.e., on the poly (methyl methacrylate) plate in the non-electrode hole of model of fissuration, according into
Sodium chloride solution is injected at water end (W.E.) baffle-box 20mm；
E. the process of solute transfer in filling fracture is analyzed by the natural potential data of analysis acquisition and solute is polluted
Situation is assessed: being raised and reduced by acquiring the natural potential numerical value acquired at each Ag-AgCl electrode in real time come in real time
The diffusion mobility situation of monitoring pollution object, the raising of natural potential numerical value then illustrate that pollutant is still moved to the Ag-AgCl electrode points
It moves and increases in the pollutant concentration of the Ag-AgCl electrode points, natural potential numerical value reduces then pollutant positive transfer far from the Ag-
The pollutant concentration of AgCl electrode and Ag-AgCl electrode points reduces, until the natural potential of all Ag-AgCl electrodes is restored to surely
Surely it can determine that pollutant all migrates out model of fissuration, it can also be according to the natural potential peak value at each Ag-AgCl electrode, peak face
Come pollutant concentration and contaminant transportation position in the entire model of fissuration of real-time monitoring.
The sodium chloride solution of the injection is 10g/L, can also be needed to prepare other concentration according to test.
The utility model has the advantages that filling fracture solute transfer simulation experiment system of the invention and monitoring method, monitoring device is utilized
Data collecting instrument is changed by natural potential during monitoring crack solute transfer, to disclose filling fracture solute transfer process
In natural potential response pattern, to crack dielectric testing simulation and solute transfer dynamic process be monitored, be underground solute
The monitoring of migration provides completely new, succinct method；This model of fissuration is detachable with water inlet end baffle-box and water outlet baffle-box
, this allows for the filling of the filler in model of fissuration and cleaning is more convenient；In this model use Double-buffer device, i.e., into
Water end (W.E.) baffle-box and water outlet baffle-box allow the solute transfer process in crack more steady in this way, keep test data more quasi-
Really；Using double spilling water slot devices in this model, making water flow, flow velocity is more stable in a model, and the control and measurement for making head difference are more
Add simplicity, water inlet end water flow size in experimentation is avoided to be unable to control, to influence the simulation effect to crack.
Detailed description of the invention
Fig. 1 is filling fracture migration monitoring test system structural schematic diagram of the invention.
In figure: A- die body, B- confession/water outlet and constant-current stabilizer, C- monitoring device；1. intake chamber, 2. water inlet baffle-boxs,
3. model of fissuration, 4. water outlet baffle-boxs, 5. effluent troughs, 6. water inlet pipes, 7. first overflow grooves, 8. first overflow baffles, 9. first
Rhone, 10. first drainpipes, 11. valves, 12. flowmeters, 13. first flow distribution plates, 14. first row stomatas, 15. solution note
Loophole, 16. electrode holes, 17.Ag-AgCl electrode, 18. charges, 19. data transmission wires, 20. second flow distribution plates, 21. second
Gas vent, 22. outlet pipes, 23. second overflow grooves, 24. second rhones, 25. second overflow baffles, 26. second drainpipes.
Specific embodiment
One embodiment of the present of invention is further described with reference to the accompanying drawing:
As shown in Figure 1, filling fracture solute transfer monitoring test device of the invention, including die body A, for/water outlet
And constant-current stabilizer B, monitoring device C；Wherein the both ends die body A are respectively equipped with detachable confession/water outlet and constant-current stabilizer B, model
Main body A is connected with monitoring device C by data transmission wires；
The die body A includes model of fissuration 3, and model of fissuration 3 includes two pieces of poly (methyl methacrylate) plates disposed in parallel, described
Poly (methyl methacrylate) plate model of fissuration 3 is 1200 × 200 × 5mm having a size of length × height × gap width, and the proportional band that grows tall is higher than 6:1, gap
Width is modified according to demand, there are crack perforation left and right between two pieces of poly (methyl methacrylate) plates, covers modeling using poly (methyl methacrylate) plate up and down
It seals and fixes, the equal identical electrode hole 16 of seven sizes of row's spacing is set on wherein one piece of poly (methyl methacrylate) plate, each
It is respectively provided with Ag-AgCl electrode 17 in electrode hole 16 and fixed plastic packaging, 17 tail end of Ag-AgCl electrode pass through data transmission wires 19
Electrode is connected with monitoring device C, and for monitoring solute transfer in crack, the conducting wire of the Ag-AgCl electrode 17 is data biography
Transporting line 19, data collecting instrument are the Intelligent programmable data collector DT85 of Australian import, the data processor
For computer, solution injection ports 15 are arranged in 20mm at away from water inlet end baffle-box 2, for injecting sodium chloride solution；Model of fissuration 3
Charges 18 are equipped in crack between two pieces of poly (methyl methacrylate) plates, charges 18 select alluviation river sand, the root after the screening of grain group
It is configured according to experimental design, and with effective grain size d10: the grain diameter of particulate soil layer accounts for total sand weight less than the partial size sand again
10%, as the reduced parameter of adjustment filling composition granule composition, it is respectively configured that multiple groups are non-homogeneous and uniform pack object, it is good with grade
Sand grains each range partial size sand grains mixed add in model of fissuration 3, and be directly added into model of fissuration 3 with the undesirable sand grains of grade
In.
Confession/the water outlet and constant-current stabilizer B includes water inlet system and outlet system, and water inlet system includes intake chamber 1, goes out
4 device of sink 5, water inlet end baffle-box 2 and water outlet baffle-box；The first overflow baffle 8 is vertically equipped in intake chamber 1, first overflows
It flows baffle 8 and space in intake chamber 1 is divided into the first rhone 9 and the first overflow groove 7,9 bottom of the first rhone is vertically also set
There is the first drainpipe 10,7 bottom of the first overflow groove is respectively equipped with the water inlet pipe 6 of two same models, a water inlet pipe 6 and water source
Connect, another water inlet pipe 6 is connected with water inlet end baffle-box 2, and 2 bottom of water inlet end baffle-box passes through water inlet pipe 6 and the
One overflow groove 7 is connected, and valve 11 and flowmeter 12,2 chamber poly (methyl methacrylate) plate of water inlet end baffle-box are respectively equipped on water inlet pipe 6
It is equipped with bar shaped water inlet identical with crack size in model of fissuration 3, water inlet end baffle-box 2 passes through the water inlet and crack
Model 3 communicates, and the first flow distribution plate 13 is equipped in water inlet end baffle-box 2, and water inlet end baffle-box 2 is divided into two by the first flow distribution plate 13
Chamber, two chambers top are respectively equipped with downtake pipe 14, and the first flow distribution plate 13 is equipped with multiple through-holes；
Outlet system includes the water outlet baffle-box 4 connecting with model of fissuration 3, the organic glass of the chamber of water outlet baffle-box 4
Glass plate is equipped with the bar shaped water outlet with 3 same size of model of fissuration, and model of fissuration 3 passes through water outlet and water outlet baffle-box 4
Chamber is equipped with the second flow distribution plate 20 in the middle part of water outlet baffle-box 4 for water outlet baffle-box 4 and is divided into two chambers, and second point
Flowing plate 20 is equipped with multiple through-holes, and the two chambers of water outlet baffle-box 4 are respectively equipped with second row stomata 21, water end (W.E.) baffle-box 4
Bottom is connected by outlet pipe 22 with effluent trough 5, is equipped with and the second overflow baffle mutually level in intake chamber in effluent trough 5
25, second overflow baffle 25 divides effluent trough 5 for the second overflow groove 23 and the second rhone 24, and outlet pipe 22 and second overflows
23 bottom of sink is connected, and 24 bottom of the second rhone is equipped with the second drainpipe 26；
Monitoring device C includes the multi-Channels Data Acquisition connecting with Ag-AgCl electrode 17, multi-Channels Data Acquisition with
Data processor is connected.
A kind of filling fracture solute transfer method of real-time of filling fracture solute transfer monitoring system monitoring system, packet
Include following steps:
A. material fills: model of fissuration 3 and water inlet end baffle-box 2 being installed, then are with water inlet end baffle-box 2 by model
Downwards, it is disposed vertically and fixes, introduce the water into the model of fissuration 3 from water inlet pipe 6 to after 1/2 or so, stop water inlet, slowly
By charges 18 from other end filling model of fissuration 3, filling charges 18 while slight vibration model are accomplished to make to fill as far as possible
Object 18 is closely knit, and with the continuous filling of sand sample, the water in model of fissuration 3 is with the filling of charges 18 and slowly from upper end crack
Mouth discharge, until being full of charges 18 in model.The sand sample bubble of charges 18 in model may make greatly to subtract in this way
It is few, keep the sand sample of charges 18 closely knit, going out the installation of water outlet baffle-box 4 to model of fissuration 3 after the completion of charges 18 are filled
Water end (W.E.)；
B. the model of fissuration 3 that water inlet end baffle-box 2 and water outlet baffle-box 4 will be installed, is placed horizontally at work top,
Intake chamber 1 is connected with the water inlet end baffle-box 2 using PVC transparent hose, same method, effluent trough 5 and it is described go out
Water end (W.E.) baffle-box 4 is connected, and water inlet end baffle-box 2, model of fissuration 3, water outlet baffle-box 4 are placed on level in fact after being completed
Platform is tested, the overflow horizontal plane of the fixed effluent trough 5 is higher than model of fissuration 3 within the scope of 10cm-30cm, further according to requirement of experiment
Head difference, control intake chamber 1 overflow elevation of water within the scope of 10cm-70cm；
C., the natural potential data type of sampling and the time of sampling triggering are set in data collecting instrument by computer；
D. in the solution injection ports 15 of filling fracture upstream, i.e., on the poly (methyl methacrylate) plate in the non-electrode hole of model of fissuration, according to
The sodium chloride solution of 10g/L is injected at water inlet end baffle-box 20mm, concentration of sodium chloride solution can need to prepare change according to test；
E. the process of solute transfer in filling fracture is analyzed by the natural potential data of analysis acquisition and solute is polluted
Situation is assessed: being raised and reduced by acquiring the natural potential numerical value acquired at each Ag-AgCl electrode 17 in real time come real
When monitoring pollution object diffusion mobility situation, the raising of natural potential numerical value then illustrates pollutant still to the Ag-AgCl electrode 17
Point migrates and increases in 17 points of the Ag-AgCl electrode of pollutant concentration, and it is remote that natural potential numerical value reduces then pollutant positive transfer
From the Ag-AgCl electrode 17 and 17 points of Ag-AgCl electrode of pollutant concentration reduces, until all Ag-AgCl electrodes 17 from
Right current potential, which is restored to stabilization, can determine that pollutant all migrates out model of fissuration 3, can also be according to each Ag-AgCl electrode 17 at
Natural potential peak value, peak face come pollutant concentration and contaminant transportation position in the entire model of fissuration 3 of real-time monitoring.
Claims (6)
1. a kind of filling fracture solute transfer monitoring test device, it is characterised in that: it include die body (A), for/water outlet and
Constant-current stabilizer (B), monitoring device (C)；Wherein the both ends die body (A) are respectively equipped with detachable confession/water outlet and constant-current stabilizer
(B), die body (A) is connected with monitoring device (C) by data transmission wires；
The die body (A) includes model of fissuration (3), and model of fissuration (3) includes two pieces of poly (methyl methacrylate) plates disposed in parallel, and two
There are crack perforation or so between block poly (methyl methacrylate) plate, charges (18) are equipped in crack, are covered up and down using poly (methyl methacrylate) plate
The identical electrode hole (16) of seven equal sizes of row's spacing is arranged in plastic packaging and fixation on wherein one piece of poly (methyl methacrylate) plate,
It is respectively provided with Ag-AgCl electrode (17) in each electrode hole (16) and fixed plastic packaging, Ag-AgCl electrode (17) tail end are passed by data
Transporting line (19) is connected with monitoring device (C), for monitoring in crack natural potential Parameters variation during solute transfer,
Away from solution injection ports (15) are arranged at water inlet end baffle-box (2) 20mm, for injecting sodium chloride solution；
Confession/the water outlet and constant-current stabilizer (B) include water inlet system and outlet system, and water inlet system includes intake chamber (1), water outlet
Slot (5), water inlet end baffle-box (2) and water outlet baffle-box (4) device；The first overflow baffle is vertically equipped in intake chamber (1)
(8), intake chamber (1) interior space is divided into the first rhone (9) and the first overflow groove (7), first row by the first overflow baffle (8)
Sink (9) bottom is vertically additionally provided with the first drainpipe (10), the first overflow groove (7) bottom be respectively equipped with two same models into
Water pipe (6), a water inlet pipe (6) connect with water source, and another water inlet pipe (6) is connected with water inlet end baffle-box (2), it is described into
Water end (W.E.) baffle-box (2) bottom is connected by water inlet pipe (6) with the first overflow groove (7), and water inlet pipe is respectively equipped with valve on (6)
(11) it is equipped with and crack size phase in model of fissuration (3) with flowmeter (12), water inlet end baffle-box (2) chamber poly (methyl methacrylate) plate
Same bar shaped water inlet, water inlet end baffle-box (2) are communicated by the water inlet with model of fissuration (3), water inlet end baffle-box (2)
In be equipped with the first flow distribution plate (13), water inlet end baffle-box (2) is divided into two chambers by the first flow distribution plate (13), at the top of two chambers
It is respectively equipped with downtake pipe (14), the first flow distribution plate (13) is equipped with multiple through-holes；
Outlet system includes the water outlet baffle-box (4) connecting with model of fissuration (3), and the chamber of water outlet baffle-box (4) is organic
Glass plate is equipped with the bar shaped water outlet with model of fissuration (3) same size, and model of fissuration (3) is slow by water outlet and water outlet
Case (4) chamber is rushed, the second flow distribution plate (20) is equipped in the middle part of water outlet baffle-box (4) and water outlet baffle-box (4) is divided into two
A chamber, the second flow distribution plate (20) are equipped with multiple through-holes, and the two chambers of water outlet baffle-box (4) are respectively equipped with second exhaust
Hole (21), water outlet baffle-box (4) bottom are connected by outlet pipe (22) with effluent trough (5), in effluent trough (5) equipped with into
Effluent trough (5) is divided into the second spilling water by mutually level second overflow baffle (25) in sink, second overflow baffle (25)
Slot (23) and the second rhone (24), outlet pipe (22) are connected with the second overflow groove (23) bottom, the second rhone (24) bottom
Portion is equipped with the second drainpipe (26)；
Monitoring device (C) includes the multi-Channels Data Acquisition connecting with Ag-AgCl electrode (17), multi-Channels Data Acquisition with
Data processor is connected.
2. filling fracture solute transfer monitoring test device according to claim 1, it is characterised in that: the organic glass
Plate model of fissuration (3) design size is that length × height × gap width is 1200 × 200 × 5mm, and the proportional band that grows tall is higher than 6:1, slit width
Degree is modified according to demand.
3. filling fracture solute transfer monitoring test device according to claim 1, it is characterised in that: the model of fissuration
(3) charges (18) are equipped in the crack between two pieces of poly (methyl methacrylate) plates, charges (18) select alluviation river sand, by grain group
It is configured after screening according to experimental design, and with effective grain sized 10: the grain diameter of particulate soil layer accounts for again less than the partial size sand
The 10% of total sand weight is respectively configured that multiple groups are non-homogeneous and uniform pack object as the reduced parameter of adjustment filling composition granule composition,
It is added in model of fissuration (3) after mixing each range partial size sand grains with the good sand grains of grade, and it is direct with the undesirable sand grains of grade
It is added in model of fissuration (3).
4. filling fracture solute transfer monitoring test device according to claim 1, it is characterised in that: the Ag-AgCl
The conducting wire of electrode (17) is data transmission wires (19), and data collecting instrument is the Intelligent programmable data acquisition of Australian import
Device DT85, the data processor are computer.
5. a kind of filling fracture solute transfer using filling fracture solute transfer monitoring test device described in claim 1 monitors
Test method, feature include the following steps:
A. material fills: model of fissuration (3) and water inlet end baffle-box (2) being installed, then by model with water inlet end baffle-box (2)
Be it is downward, be disposed vertically and fix, from water inlet pipe (6) introduce the water into the model of fissuration (3) to after 1/2 or so, stop into
Water, slowly by charges (18) from other end filling model of fissuration (3), filling charges (18) while slight vibration model,
Make charges (18) closely knit as far as possible, with the continuous filling of sand sample, water in model of fissuration (3) with charges (18) filling
And be slowly discharged from upper end crack mouthful, until being full of charges (18) in model, it may make charges in model (18) in this way
Sand sample bubble is greatly reduced, and keeps the sand sample of charges (18) closely knit, delays water outlet after the completion of charges (18) filling
Rush the water outlet of case (4) installation to model of fissuration (3)；
B. the model of fissuration (3) that water inlet end baffle-box (2) and water outlet baffle-box (4) will be installed, is placed horizontally at workbench
Intake chamber (1) is connected by face using PVC transparent hose with the water inlet end baffle-box (2), same method, effluent trough (5)
It is connected with the water outlet baffle-box (4), buffers water inlet end baffle-box (2), model of fissuration (3), water outlet after being completed
Case (4) is placed on horizontal experimental bench, and the overflow horizontal plane of the fixed effluent trough (5) is higher than model of fissuration (3) 10cm-30cm model
In enclosing, further according to the head difference of requirement of experiment, the overflow elevation of water of intake chamber (1) is controlled within the scope of 10cm-70cm；
C., the natural potential data type of sampling and the time of sampling triggering are set in data collecting instrument by computer；
D. in the solution injection ports (15) of filling fracture upstream, i.e., on the poly (methyl methacrylate) plate in the non-electrode hole of model of fissuration, according into
The sodium chloride solution injected at water end (W.E.) baffle-box 20mm；
E. by the process of solute transfer in the natural potential data analysis filling fracture of analysis acquisition and to solute pollution situation
It is assessed: being raised and reduced by acquiring the natural potential numerical value at each Ag-AgCl electrode (17) in real time come real-time monitoring
The diffusion mobility situation of pollutant, the raising of natural potential numerical value then illustrate that pollutant is still moved to Ag-AgCl electrode (17) point
It moves and increases in the pollutant concentration of Ag-AgCl electrode (17) point, it is separate that natural potential numerical value reduces then pollutant positive transfer
The pollutant concentration of the Ag-AgCl electrode (17) and Ag-AgCl electrode (17) point reduces, until all Ag-AgCl electrodes (17)
Natural potential be restored to stabilization can determine that pollutant all migrates out model of fissuration (3), can also be according to each Ag-AgCl electrode
(17) natural potential peak value, peak face at come pollutant concentration and contaminant transportation position in the entire model of fissuration of real-time monitoring (3)
It sets.
6. a kind of use filling fracture solute transfer monitoring test method described in claim 5, it is characterised in that: the injection
Sodium chloride solution is 10g/L, can be needed to prepare other concentration according to test.
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