CN107014982A - Dialysis experimental rig and method - Google Patents
Dialysis experimental rig and method Download PDFInfo
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- CN107014982A CN107014982A CN201710352148.5A CN201710352148A CN107014982A CN 107014982 A CN107014982 A CN 107014982A CN 201710352148 A CN201710352148 A CN 201710352148A CN 107014982 A CN107014982 A CN 107014982A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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Abstract
The invention discloses a kind of dialysis experimental rig, including constant temperature water bath oscillator, constant temperature water bath oscillator carries oscillator and constant temperature bottle, PEG solution placement bottle is shelved with constant temperature bottle, PEG solution placement bottle top carries a pair of lever necks being oppositely arranged, lever neck has been inserted and soil sample is lifted with lever, lever, and soil sample is wrapped up using pellicle.The invention also discloses the method for the matric suction for testing and setting up the soil body and the indicatrix of its moisture content.The method for implementing to test and set up the matric suction and its moisture content of the unsaturation soil body using said apparatus, it is more convenient, and also entirely process of the test can be carried out more stably.
Description
Technical field
The present invention relates to a kind of dialysis experimental rig.Surveyed the invention further relates to one kind using above-mentioned dialysis experimental rig
The method for trying and setting up the matric suction of the soil body and the indicatrix of its moisture content.
Background technology
Compared with saturated soil, there is more gas in the hole of unsaturated soil, the presence for having suction, the general unsaturation soil body
Suction be primarily referred to as its matric suction, soil-water characteristic curve (Soil- water characteristic curve, letter
Claim SWCC) matric suction of unsaturated soil body and the relation of its moisture content describes, it for prediction unsaturated soil mechanics
Property, permeability parameters and shearing strength etc. are significant, are also a necessary condition for carrying out the dynamic hydraulic analysis of side slope.
Traditional testing method has:Filter paper method, balance of steam method, Dew- point potentiometer methods, pressure plare method, Tempe instrument
Method of testing and dialysis etc. relatively at present to use dialysis more.
But, it is necessary to carry out the dialyzability assay of isoperibol to the soil sample that is wrapped in pellicle in dialysis experiment, by
In not special testing equipment, cause to occur in test operation difficulty greatly, orientation test personnel are difficult the phenomenon carried out.
The content of the invention
In view of the deficiency of prior art, the technical problems to be solved by the invention are to provide a kind of dialysis experimental rig,
The device facilitates testing crew to operate, and operation is more quick, and is conducive to ensureing the stability that experiment is carried out.The present invention to be solved
Technical problem certainly also includes providing a kind of method for the matric suction and its moisture content tested and set up the unsaturation soil body.
Therefore, the technical scheme is that:A kind of dialysis experimental rig, including constant temperature water bath oscillator, water-bath are permanent
Warm oscillator carries and PEG solution placement bottle is shelved with oscillator and constant temperature bottle, constant temperature bottle, PEG solution placement bottle upper inner
With a pair of lever necks being oppositely arranged, lever neck, which has been inserted, is lifted with soil sample on lever, lever, soil sample uses pellicle
Bottle stopper is configured with parcel, the PEG solution placement bottle.
Present invention also offers a kind of method tested and set up the matric suction of the soil body and the indicatrix of its moisture content,
It is characterized in that:Including:
A, soil sample disposal
First soil sample is dried and grinds the sieve for dissipating 2mm, about 100 g soil sample is weighed after drying again, is that target is aqueous with 11%
Rate prepares dry density d=1.46 g/cm3Dialysis sample, to simulate the soil body under rainfall by doing wet change
Change process is computed the quality of water needed for can obtaining, and is then successively sprayed at water on drying soil with watering can, close after stirring
Envelope stand 24 hours it is standby;
B, pellicle processing
Pellicle is taken out from refrigerator, is cut into 7cm segment, and 30min is soaked in deionized water or is boiled in distilled water
10min, to eliminate influence of the pellicle protective layer to experiment;
C, configuration polyglycol solution
Configured using 5,25,80,200,500, six kinds of suction of 1000kPa as target suction, pass through formula(1)Calculate above solution
Brix angle value should be 1.88%, 4.10%, 7.07%, 10.69%, 15.82%, 20.85%, be respectively pivoted to PEG solution peace
Put bottle standby;
D, the preparation of soil sample
Use cutting ring sample preparation, cutting ring sample is averagely cut into 4 parts, be whittled into 10g earth pillar, at least six sample, be put into it is standby in preservative film,
Remaining soil sample surveys moisture content, dry density;
E, water-bath constant temperature oscillator preparation
Constant temperature water bath oscillator adds appropriate amount of water, and temperature is transferred to 20 DEG C, keeps water temperature, and adjust concussion speed;
F, sample assembling
Soil sample is taken out from preservative film, loads pellicle, pellicle two ends tie with fine rule, and is hanging to fine rule molten equipped with PEG
The PEG solution placement bottle of liquid, solution, which will be totally submerged in soil sample, solution, instills a few drop penicillin, PEG solution placement bottleneck envelope
Plug seals and posts label, and PEG solution placement bottle is put into water-bath constant temperature oscillator and starts experiment;
G, data measure
PEG solution is taken with dropper from PEG solution placement bottle, on the refractive prism for uniformly dripping to refractometer, prism cover plate is covered
Brix angle value is measured, and is recorded;The moisture content that soil sample surveys soil sample is taken out from pellicle;
H, data processing
A, bring Brix angle value into using formula, obtain the suction value of PEG solution, this suction value is exactly the suction value of soil sample;Drying
Method measures the moisture content of correspondence style, is converted into volumetric water content;
B, fitting experimental data obtain soil-water characteristic curve;
C, record form.
The operability that the above-mentioned dialysis experimental rig of use that the present invention is provided is tested is stronger, more facilitates fast
Victory, and entirely process of the test can be carried out more stably.
Brief description of the drawings
The dialysis experimental rig schematic diagram that Fig. 1 provides for the present invention.
Fig. 2 is Fig. 1 Split type structure schematic diagram.
Fig. 3 be Fig. 1 in bottle stand schematic top plan view.
SWCC curves and matched curve of the Fig. 4 for the experiment soil body.
Embodiment
Shown in reference picture 1, Fig. 2, Fig. 3, the dialysis experimental rig that the present invention is provided, including constant temperature water bath oscillator 1, water
Bath isothermal vibration device 1 carries and PEG solution placement bottle 3 is shelved with oscillator and constant temperature bottle 2, constant temperature bottle 2, PEG solution placement bottle 3
Upper inner carries a pair of lever necks 4 being oppositely arranged, and lever neck 4 has been inserted on lever 5, lever 5 and has been lifted with soil sample 6,
Soil sample 6 is wrapped up using pellicle, and bottle stopper 9 is configured with the PEG solution placement bottle 3.Bottle stand 7, bottle are carried on the constant temperature bottle 2
Frame 7 carries outer circle rack 71 and inner ring 72, is connected between outer circle rack 71 and inner circle rack 72 using at least three hack levers 73, the PEG
Solution placement bottle 3 carries outer 31, and PEG solution placement bottle 3 is inserted in inner circle rack 72 and its outer 31 is shelved on inner circle rack 72.
Lanyard 8 is tied with the lever 5 in the present embodiment, the lower end of lanyard 8 carries barb, and the sample uses cord colligation, described
Hook is hooked on cord.Because PEG solution disposes bottle 3 to be arranged on by the way that bottle stand 7 is stable on constant temperature bottle 2, and the thick stick with soil sample 6
Bar 5 is placed into lever neck 4, makes whole device all linked with one another, and the stability of structure is extremely strong, and above-mentioned fit structure
Very convenient dismounting, therefore be conducive to ensureing that experiment is smoothed out.
Shown in reference picture 1,2,3,4, test and set up the matric suction of the soil body and the spy of its moisture content that the present invention is provided
Levying the method for curve includes:
Laboratory apparatus and material
1st, pellicle(MWCO is 14000)(Need refrigeration)
2nd, PEG 20000
3rd, water-bath constant temperature oscillator
4th, hand refractometer(The Brix degree of polyglycol solution is surveyed, solution suction can be calculated by Brix degree, to be adjusted before
Zero)
5th, penicillin(Sterilization is used, and needs refrigeration)
6th, preservative film(Temporarily deposit soil sample)
7th, plastic foil, rubber band(Sealing is used)
8th, electronic balance(Survey the quality of soil)
9th, fine rule(The soil sample of pellicle parcel is hung in polyglycol solution)
Experimental procedure
A, soil sample disposal
First soil sample is dried and grinds the sieve for dissipating 2mm, about 100 g soil sample is weighed after drying again, is that target is aqueous with 11%
Rate prepares dry density d=1.46 g/cm3Dialysis sample, to simulate the soil body under rainfall by doing wet change
Change process is computed the quality of water needed for can obtaining, and is then successively sprayed at water on drying soil with watering can, close after stirring
Envelope stand 24 hours it is standby.
B, pellicle processing
Pellicle is taken out from refrigerator, is cut into 7cm segment, and 30min is soaked in deionized water or is boiled in distilled water
10min, to eliminate influence of the pellicle protective layer to experiment.(Note:Disposable glove will be worn since this step, life is prevented
Thing pollutes)
C, configuration polyglycol solution
Configured using 5,25,80,200,500, six kinds of suction of 1000kPa as target suction, pass through formula(1)Calculate above solution
Brix angle value should be 1.88%, 4.10%, 7.07%, 10.69%, 15.82%, 20.85%.It is respectively pivoted to PEG solution peace
Bottle is put to use for 3.
Wherein, the suction value of solution is referred to, Br is solution Brix degree.
Relation between suction and Brix degree
D, soil sample preparation
Use cutting ring sample preparation, cutting ring sample is averagely cut into 4 parts, be whittled into 10g earth pillar, at least six sample, be put into it is standby in preservative film,
Remaining soil sample surveys moisture content, dry density.(sample size can within a day or two survey in test Brix degree with multiple spot,
Brix degree terminates soon being tested when occurring, and can also so determine the optimal dialysis time)
E, water-bath constant temperature oscillator preparation
Constant temperature water bath oscillator 1 adds appropriate amount of water, and temperature is transferred to 20 DEG C, keeps water temperature, and adjust concussion speed.(Adjusted in document
For 110 revs/min, have leaper without waves splash about.Occurrence is fixed according to actual conditions)
F, sample assembling
Soil sample is taken out from preservative film, loads pellicle, pellicle two ends tie with fine rule, and is hanging to fine rule molten equipped with PEG
The PEG solution placement bottle 3 of liquid, solution, which will be totally submerged in soil sample 6, solution, instills a few drop penicillin.PEG solution disposes 3 mouthfuls of bottle
Sealed with blocking 9 and post label.PEG solution placement bottle is put into water-bath constant temperature oscillator and starts experiment.(Concussion about 10 days)
G, data measure
PEG solution is taken with dropper from PEG solution placement bottle, on the refractive prism for uniformly dripping to refractometer, prism cover plate is covered
Brix angle value is measured, and is recorded;The moisture content that soil sample surveys soil sample is taken out from pellicle.Test operation needs to clear up instrument after finishing
Device.
H, data processing and drawing
1st, bring Brix angle value into using formula, obtain the suction value of PEG solution, this suction value is exactly the suction value of soil sample;Drying
Method measures the moisture content of correspondence style, is converted into volumetric water content.
2nd, fitting experimental data obtains soil-water characteristic curve.
3rd, record form
6th, key issue
1st, the optimal dialysis time
When carrying out dialyzability assay, it is necessary first to it is determined that the optimal dialysis time corresponding to the experiment soil body.The dialysis time is too short, soil sample
Suction is not up to balance with PEG solution suction;Dialysis overlong time, then the PEG macromoleculars in solution be highly likely to enter in film,
And pellicle is easily destroyed, it will cause that the suction value measured is less than normal, moisture content is bigger than normal.Therefore, determine in test used
The optimal dialysis time of soil, then follow-up test is carried out with this.
2nd, the fitting of soil-water characteristic curve
Using Fredlund- Xing models, simulation fitting is carried out to experimental data, can obtain testing soil body continuous and derivable
SWCC。
3rd, the use of penicillin
Microbes make pellicle reduce the life-span with the increase of soak time in water, therefore the addition of penicillin is essential.
Claims (6)
1. a kind of dialysis experimental rig, it is characterized in that:Including constant temperature water bath oscillator, constant temperature water bath oscillator carries oscillator
And constant temperature bottle, PEG solution placement bottle is shelved with constant temperature bottle, PEG solution placement bottle upper inner carries a pair be oppositely arranged
Lever neck, lever neck has been inserted and soil sample is lifted with lever, lever, and soil sample is wrapped up using pellicle, the PEG solution peace
Put and bottle stopper is configured with bottle.
2. dialysis experimental rig according to claim 1, it is characterized in that:Bottle stand, bottle stand band are carried on the constant temperature bottle
There are outer circle rack and inner circle rack, using at least three hack lever connections between outer circle rack and inner circle rack, the PEG solution placement bottle is carried
Outer, PEG solution placement bottle is inserted in inner circle rack and its outer is shelved on inner circle rack.
3. dialysis experimental rig according to claim 1 or 2, it is characterized in that:It is tied with the lever under lanyard, lanyard
End carries barb, and the sample uses cord colligation, and the hook is hooked on cord.
4. the matric suction and its moisture content of the soil body are tested and set up to the dialysis experimental rig described in a kind of use claim 1
Indicatrix method, it is characterized in that:Including:
A, soil sample disposal
First soil sample is dried and grinds the sieve for dissipating 2mm, about 100 g soil sample is weighed after drying again, is that target is aqueous with 11%
Rate prepares dry density d=1.46 g/cm3Dialysis sample, to simulate the soil body under rainfall by doing wet change
Change process is computed the quality of water needed for can obtaining, and is then successively sprayed at water on drying soil with watering can, close after stirring
Envelope stand 24 hours it is standby;
B, pellicle processing
Pellicle is taken out from refrigerator, is cut into 7cm segment, and 30min is soaked in deionized water or is boiled in distilled water
10min, to eliminate influence of the pellicle protective layer to experiment;
C, configuration polyglycol solution
Configured using 5,25,80,200,500, six kinds of suction of 1000kPa as target suction, pass through formula(1)Calculate above solution
Brix angle value should be 1.88%, 4.10%, 7.07%, 10.69%, 15.82%, 20.85%, be respectively pivoted to PEG solution peace
Put bottle standby;
D, the preparation of soil sample
Use cutting ring sample preparation, cutting ring sample is averagely cut into 4 parts, be whittled into 10g earth pillar, at least six sample, be put into it is standby in preservative film,
Remaining soil sample surveys moisture content, dry density;
E, water-bath constant temperature oscillator preparation
Constant temperature water bath oscillator adds appropriate amount of water, and temperature is transferred to 20 DEG C, keeps water temperature, and adjust concussion speed;
F, sample assembling
Soil sample is taken out from preservative film, loads pellicle, pellicle two ends tie with fine rule, and is hanging to fine rule molten equipped with PEG
The PEG solution placement bottle of liquid, solution, which will be totally submerged in soil sample, solution, instills a few drop penicillin, PEG solution placement bottleneck envelope
Plug seals and posts label, and PEG solution placement bottle is put into water-bath constant temperature oscillator and starts experiment;
G, data measure
PEG solution is taken with dropper from PEG solution placement bottle, on the refractive prism for uniformly dripping to refractometer, prism cover plate is covered
Brix angle value is measured, and is recorded;The moisture content that soil sample surveys soil sample is taken out from pellicle;
H, data processing
A, bring Brix angle value into using formula, obtain the suction value of PEG solution, this suction value is exactly the suction value of soil sample;Drying
Method measures the moisture content of correspondence style, is converted into volumetric water content;
B, fitting experimental data obtain soil-water characteristic curve;
C, record form.
5. the native water feature of the matric suction according to claim 4 for testing and setting up the unsaturation soil body and its moisture content is bent
The method of line, it is characterized in that:Using Fredlund- Xing models, simulation fitting is carried out to experimental data, obtains testing the soil body
The SWCC of continuous and derivable.
6. the native water feature of the matric suction according to claim 5 for testing and setting up the unsaturation soil body and its moisture content is bent
The method of line, it is characterized in that:Carry out step G data measure constantly, it is necessary first to it is determined that the optimal dialysis corresponding to the experiment soil body
Time.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107843482A (en) * | 2017-11-27 | 2018-03-27 | 中国石油天然气集团公司 | A kind of middle large scale test specimen cryogenic box |
CN109211642A (en) * | 2018-11-14 | 2019-01-15 | 中国科学院、水利部成都山地灾害与环境研究所 | The soil sample makeup that is made into one is set |
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CN204503137U (en) * | 2015-01-30 | 2015-07-29 | 河南健康源生物科技有限公司 | A kind of thermostat water bath |
CN105467098A (en) * | 2015-11-16 | 2016-04-06 | 天津城建大学 | Correction method for unsaturated soil soil-water characteristic curve based on axis translation technique test |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107843482A (en) * | 2017-11-27 | 2018-03-27 | 中国石油天然气集团公司 | A kind of middle large scale test specimen cryogenic box |
CN107843482B (en) * | 2017-11-27 | 2024-04-02 | 中国石油天然气集团公司 | Low-temperature box for medium-and-large-size test piece |
CN109211642A (en) * | 2018-11-14 | 2019-01-15 | 中国科学院、水利部成都山地灾害与环境研究所 | The soil sample makeup that is made into one is set |
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Application publication date: 20170804 |