CN207586088U - A kind of Single Fracture solute transport experiments device of line source release - Google Patents
A kind of Single Fracture solute transport experiments device of line source release Download PDFInfo
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- CN207586088U CN207586088U CN201721366446.1U CN201721366446U CN207586088U CN 207586088 U CN207586088 U CN 207586088U CN 201721366446 U CN201721366446 U CN 201721366446U CN 207586088 U CN207586088 U CN 207586088U
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- line source
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- solute transport
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Abstract
The utility model discloses a kind of Single Fracture solute transport experiments device of line source release, belongs to groundwater environment protection technique field.The device includes fixed and adjustment means, intake-outlet connector, line source control valve and rock fracture test specimen.This device is by designing special line source control valve, it can be achieved that the defects of line source of tracer discharges purpose, makes up point source release test in rock Single Fracture.The liquid storage cavity of this device water inlet connector is injection, mixing and the release of reactor solution, provides a kind of easy, effective method.This device can not only carry out the migration experiment of water soluble contaminants, additionally it is possible to carry out the experiment of the two phase flows such as water gas and water oil.
Description
Technical field
The utility model is related to groundwater environment protection technique fields, concretely relate to indoor simulation subsurface rock and split
The experiment simulator and its application method that gap medium underground water pollutant is migrated in a manner of line source are for underground water pollution
Or the testing equipment of repairing research.
Background technology
Underground water pollution, Surrounding Nuclear Waste Repositories processing and CO2The engineerings such as geological storage and environmental area are all referred to crack
Medium solute transfer process is one of hot and difficult issue problem studied in recent decades.Since crack geometry is special in nature
The complexity and randomness of sign, solute transfer mechanism is sufficiently complex in coarse Single Fracture, and physical experiments are that research crack is situated between
One of the important means of contaminant transportation in matter.
At present, in domestic Single Fracture solute transport experiments majority using point source method for implanting, i.e. pollutant or tracer
Agent is injected by input end aperture inside crack, and pollutant mainly passes through privileged way diffusion mobility.Some researches show that coarse
Inner width wide smaller region in crack is the one of the major reasons that solute transfer breakthrough curve generates trailing phenomenon.It is noted using point source
The method entered can not reflect influence of these regions to solute transfer.Therefore, it is necessary to the method for tracer is injected by line source
It can comprehensively, truly reflect that crack whole geometry constructs the influence to solute transfer process.
Invention content
Goal of the invention：In order to overcome the deficiencies in the prior art, the utility model, which provides one kind, can realize line source
Discharge the Single Fracture solute transport experiments simulator of tracer.Specific technical solution is as follows：
A kind of Single Fracture solute transport experiments device of line source release, connect including fixed with adjustment means, intake-outlet
Part, line source control valve and rock fracture test specimen；
The fixation includes test specimen fixed frame, valve regulated handle and side with adjustment means and adjusts clamping plate；It is fixed with
The major function of adjustment means is fixed crack test specimen, and it is made to be seamlessly connected between Inlet and outlet water connector, while assist reality
The opening and closing operations of existing line source control valve.
The intake-outlet connector includes water inlet connector and water outlet connector；The water inlet connector includes
Liquid storage cavity, venthole, coupling, inlet seal rubber slab and water inlet pipe；The liquid storage cavity and the venthole and institute
Water inlet pipe is stated to communicate；The coupling is connect with the venthole；The water outlet connector includes outlet pipe and water outlet is close
Seal rubber slab；
The line source control valve includes bar shaped stainless steel substrates and valve seal rubber strip, adjusting screw rod and hand nutting；Institute
It states valve seal rubber strip and is bonded in the bar shaped stainless steel steel disc surface；
The bar shaped stainless steel substrates of line source control valve and the major function of sealing rubber strip are, under valve closedown condition, counterincision
The sealing of gap water inlet, adjusting screw rod and hand nutting are used for realizing the opening and closing action of valve.
The rock fracture test specimen includes crack and lithosome.
Preferably, the test specimen fixed frame and valve regulated handle by aluminium alloy or stainless steel material processing and fabricating and
Into.
Preferably, the intake-outlet connector main body part is processed by pmma material.
Preferably, the rock fracture test specimen is made by the rock material containing horizontal fissure forms.
Advantageous effect：
1st, the utility model can not only carry out the migration experiment of water soluble contaminants, additionally it is possible to carry out water gas and water oil etc.
Two phase flow is tested.
2nd, the utility model is by designing special line source control valve, it can be achieved that the line source of tracer is released in rock Single Fracture
The defects of putting purpose, making up point source release test.
3rd, the liquid storage cavity of the utility model water inlet connector is injection, mixing and the release of reactor solution, carries
A kind of easy, effective method is supplied.
Description of the drawings
Fig. 1 is the tomograph of the utility model.
Fig. 2 is the structural side view of the utility model.
Fig. 3 disassembles schematic diagram for the utility model line source control valve with water inlet connector.
Fig. 4 is the solute transfer breakthrough curve figure drawn using the shale crack experiment of the utility model device.
Wherein, it is fixed to be tried with adjustment means 1, water inlet connector 2a, water outlet connector 2b, line source control valve 3, crack
Part 4, test specimen fixed frame 5, valve regulated handle 6, side adjust clamping plate 7, liquid storage cavity 8, venthole 9, coupling 10, water inlet
Mouth sealed rubber plate 11, water inlet pipe 12, outlet pipe 13, water outlet sealed rubber plate 14, bar shaped stainless steel substrates 15, valve seal rubber
Adhesive tape 16, adjusting screw rod 17, rubber seal 18, hand nutting 19, crack 20, lithosome 21.
Specific embodiment
The utility model is further described with reference to attached drawing.
As shown in Figures 1 to 3, the crack solute transport experiments device of the utility model, including it is fixed with adjustment means 1, into
Water outlet connector 2a, line source control valve 3 and rock fracture test specimen 4.
Test specimen fixed frame 5 uses about 1cm thickness stainless steel plate or aluminium alloy plate processing and fabricating, and lower portion size is 17cm
× 20cm, frame size can be according to required crack sample dimensions designed, designeds.
Pmma material processing and fabricating can be used in entery and delivery port connector 2b main parts.Wherein, water inlet connects
Part overall dimensions are 17cm × 2.8cm × 5cm (length × width × height), and the cube that 17cm × 1.8cm × 2cm is excavated in inside is empty
Between, as liquid storage cavity 8.Water outlet connector overall dimensions are 17cm × 1.8cm × 5cm (length × width × height), and water outlet connects
The apopore of 5~7 a diameter of 4mm is evenly arranged on fitting.
The shale rock that crack test specimen is about 5cm using thickness is raw material, after cleaving crack along vertical thickness direction, makes
Into the cuboid test specimen that size is 15cm × 15cm.
Crack test specimen and intake-outlet connector joining part are sealed using the sealed rubber plate 11,14 that thickness is 2mm,
Prevent to leak.Crack test specimen both sides and fixed frame close part, the side of setting 1cm thickness adjust clamping plate 7, prevent test specimen
It loosens.
Experimental rig installation process：The bar shaped steel disc end of line source control valve is packed into water inlet connector by the 1st step first
Liquid storage cavity 8 in, as shown in figure 3, adjusting screw rod 17 is sealed across the part of connector 2a using rubber seal 18, prevent
Fluid seepage in liquid storage cavity installs hand nutting 19 and valve regulated handle 6 successively.2nd step, installation water outlet connector 2b
And outlet pipe 13.3rd step is packed into after rock fracture test specimen side is sealed in experimental rig, and examination is fixed using clamping plate 7 is adjusted
Part position, and sealed test specimen and intake-outlet connector connecting portion using rubber slab.
The utility model is further illustrated in conjunction with solute transport experiments method in shale crack.
Experimental rig integral level is positioned on test platform, and pilot system is supplied water using peristaltic pump or tracer is molten
Liquid adjusts wriggling revolution speed control crack flow rate of water flow.
The water filling into crack using peristaltic pump, it is intact whether check device sealing position seals, and if there is leakage point, makes
It is sealed with glass cement.After check device leakproofness is intact, using the bubble in vacuum pumped water, make to be completely filled with water in crack
Reach saturation state.
Before tracer test carries out, tracer standard solution is first prepared, tracer (can also be used using brilliant blue dyeing agent solution
The solution such as NaCl), using ultraviolet specrophotometer bioassay standard solution absorbance, and the calibration for establishing absorbance and concentration is bent
Line.
Inlet end line source control valve 3 is closed, the water in liquid storage cavity 8 is extracted out, and inwardly fill and show by coupling 10
Track agent solution.
Start peristaltic pump and keep 2rpm rotation speed operations, open simultaneously inlet end line source control valve 3, start crack line source
Tracer test.
When timer is used during on-test, water sample is picked up in water outlet using small test tube every 2min, and according to when
Between uniformly put after serial number.
Shale crack solute transport experiments terminate after carrying out 2h altogether.Duration of test runs can be according to crack's volume and crack
Uninterrupted determines that flow can measure before the test or after experiment, and when wriggling revolution speed is 2rpm, crack rate of discharge is
0.21mL/s。
Measure water outlet water sample tracer absorbance one by one according to number order using spectrophotometer, according to absorbance-
Concentration calibration curve calculates tracer concentration, and relative concentration is obtained after then concentration value is standardized, and finally draws shale crack
Solute transfer breakthrough curve such as Fig. 4.
Shale crack solute transport experiments the result shows that, shale fracture flow be 0.21mL/s under the conditions of, crack water outlet
Solute concentration is continuously increased early period at any time, and the later stage tends towards stability, and breakthrough curve trend meets solute transport experiments universal law.
Solute penetrates crack for the first time after experiment carries out 10min, and subsequent crack water outlet solute concentration increases comparatively fast, illustrates solute in crack
It is interior to pass through privileged way fast transferring.In 40min to 60min sections, solute concentration, which is increased speed, to slow down, after testing 60min,
Solute concentration variation is smaller, and general trend is constantly close to maximum value, and there are certain trailing phenomenon, and this is mainly due in crack
The region of the wide very little of gap forms flow " motionless area ", leads to the hangover of solute transfer breakthrough curve.
The above is only the preferred embodiment of the utility model, it should be pointed out that：For the common skill of the art
For art personnel, under the premise of the utility model principle is not departed from, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (4)
1. a kind of Single Fracture solute transport experiments device of line source release, it is characterised in that：Including it is fixed with adjustment means (1),
Intake-outlet connector (2), line source control valve (3) and rock fracture test specimen (4)；
The fixation adjusts clamping plate with adjustment means (1) including test specimen fixed frame (5), valve regulated handle (6) and side
(7)；
The intake-outlet connector (2) includes water inlet connector (2a) and water outlet connector (2b)；The water inlet connects
Fitting (2a) includes liquid storage cavity (8), venthole (9), coupling (10), inlet seal rubber slab (11) and water inlet pipe
(12)；The liquid storage cavity (8) communicates with the venthole (9) and the water inlet pipe (12)；The coupling (10) with it is described
Venthole (9) connects；The water outlet connector (2b) includes outlet pipe (13) and water outlet sealed rubber plate (14)；
The line source control valve (3) including bar shaped stainless steel substrates (15) and valve seal rubber strip (16), adjusting screw rod (17) and
Hand nutting (19)；The valve seal rubber strip (16) is bonded in bar shaped stainless steel steel disc (15) surface；
The rock fracture test specimen (4) includes crack (20) and lithosome (21).
2. a kind of Single Fracture solute transport experiments device of line source release according to claims 1, it is characterised in that：Institute
Test specimen fixed frame (5) is stated to be formed by aluminium alloy or stainless steel material processing and fabricating with valve regulated handle (6).
3. a kind of Single Fracture solute transport experiments device of line source release according to claims 1, it is characterised in that：Institute
Intake-outlet connector (2) main part is stated to be processed by pmma material.
4. a kind of Single Fracture solute transport experiments device of line source release according to claims 1, it is characterised in that：Institute
The rock fracture test specimen (4) stated is made by the rock material containing horizontal fissure to be formed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721366446.1U CN207586088U (en) | 2017-10-20 | 2017-10-20 | A kind of Single Fracture solute transport experiments device of line source release |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721366446.1U CN207586088U (en) | 2017-10-20 | 2017-10-20 | A kind of Single Fracture solute transport experiments device of line source release |
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| CN207586088U true CN207586088U (en) | 2018-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576605A (en) * | 2017-10-20 | 2018-01-12 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of the Single Fracture solute transport experiments device and its application method of line source release |
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2017
- 2017-10-20 CN CN201721366446.1U patent/CN207586088U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576605A (en) * | 2017-10-20 | 2018-01-12 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of the Single Fracture solute transport experiments device and its application method of line source release |
| CN107576605B (en) * | 2017-10-20 | 2024-05-28 | 水利部交通运输部国家能源局南京水利科学研究院 | Single-crack solute migration test device released by line source and application method thereof |
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