CN106932308A - A kind of method for combining batch run with soil-column test to determine dispersion coefficient - Google Patents
A kind of method for combining batch run with soil-column test to determine dispersion coefficient Download PDFInfo
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- CN106932308A CN106932308A CN201511003993.9A CN201511003993A CN106932308A CN 106932308 A CN106932308 A CN 106932308A CN 201511003993 A CN201511003993 A CN 201511003993A CN 106932308 A CN106932308 A CN 106932308A
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- soil
- batch run
- dispersion coefficient
- column test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
Abstract
The invention belongs to environmental geotechnical technical field, and in particular to a kind of method that joint batch run determines dispersion coefficient with soil-column test；Comprise the following steps：Step one, chooses earth material, determines its geotechnological characteristic；Step 2, configures solution, prepares soil sample；Step 3, the absorption parameter under critical soil particle concentration conditions is determined using batch run；Step 4, concentration distribution of pollutants is determined using soil-column test；Step 5, dispersion coefficient is obtained by software inverting；Joint batch run of the present invention, come the method for determining landfill yard lining dispersion coefficient, can easily and effectively predict the diffusion mobility of pollutant in landfill yard lining with soil-column test；Determine to adsorb parameter value by the batch run under critical soil particle concentration conditions, dispersion coefficient is determined with reference to soil-column test, acquired results are more reasonable, closer with Practical Project condition；Can more accurately for landfill yard liner design provides reference frame.
Description
Technical field
The invention belongs to environmental geotechnical technical field, and in particular to one kind joint batch run and earth pillar
The method for testing to determine dispersion coefficient.
Background technology
Domestic waste is mainly disposed using landfill method.It is dirty containing plurality of heavy metal in landfill percolate
The harmful substances such as dye thing, migration situation of the reasonable prediction pollutant in landfill yard lining is served as a contrast to landfill yard
In design significant.In order to predict that pollutant is migrated in lining, it is thus necessary to determine that dispersion coefficient etc. is joined
Number.
Determining the method for dispersion coefficient mainly has earth pillar permeability test and batch run two ways.Interval is tried
Test simple to operation, time-consuming short, therefore application is more extensive.However, research shows, even if using identical
Test material, the absorption parameter that batch run and soil-column test draw is also different, and difference
It is very big.Cause concentration of solid particles and stirring that two kinds of different main reasons of test method result are soil
The difference of condition.Although needing more time and testing equipment, soil-column test compared with batch run
Closer with Practical Project condition, acquired results are more reasonable.
Research shows that the lining earth material obtained by batch run adsorbs parameter value with soil particle concentration
Increase and linear reduction, but absorption parameter value is basicly stable after soil particle concentration value exceedes critical value
.Balance moment unit adsorbance reduces with the increase of soil particle concentration, it may be possible to because adsorption area
Increase cause the amount of pollutant that unit soil particle is assigned to reduce.It is less in soil particle concentration
Under the conditions of, absorption parameter value is higher determined by batch run, if design that landfill yard can be over-evaluated with this
The safety coefficient of lining.Therefore should determine to inhale by the batch run under critical soil particle concentration conditions
Attached parameter value, so that for landfill yard liner design provides more reasonably design parameter.
Parameter is adsorbed in joint batch run under critical soil particle concentration conditions with soil-column test to determine landfill
The method of the dispersion coefficient of contaminant transportation is more reasonable in the lining of field, as a result more accurate, with engineering reality more
It is close.
The content of the invention
The technical problems to be solved by the invention are, in view of the shortcomings of the prior art, providing one kind combination earth pillar
The method that permeability test determines dispersion coefficient with batch run, determining dispersion coefficient with reference to two methods can
To realize having complementary advantages, the result for obtaining is more accurate.
The technical solution adopted in the present invention is：
A kind of joint batch run, come the method for determining dispersion coefficient, is comprised the following steps with soil-column test：
Step one, chooses earth material, determines its geotechnological characteristic；
Step 2, configures solution, prepares soil sample；
Step 3, the absorption parameter under critical soil particle concentration conditions is determined using batch run；
Step 4, concentration distribution of pollutants is determined using soil-column test；
Step 5, dispersion coefficient is obtained by software inverting.
Selected geological parameter has grading curve, infiltration coefficient, liquid limit, modeling in the step one
Limit, maximum dry density, optimum moisture content, porosity and proportion；Choose representative heavy metal-polluted
Dye thing is used as test object.
Solution is configured in the step 2 to prepare certain density contamination sources solution, is carried out as needed
Dilution；By after soil sample air-dry, sieving, drying is cooled to room temperature to the preparation soil sample, is put into polybag
In store for future use.
The step 3 use batch run determine the absorption parameter under critical soil particle concentration conditions include with
Lower step：
3.1 by soil sample and pollutant solution mix under isothermal condition vibration a period of time after take supernatant
Liquid is centrifuged, and determines pollutants removal rate；
3.2 constantly adjust soil particle concentration, until clearance tends towards stability, it is dense so as to obtain critical soil particle
Degree, determines the balance solution pollutant concentration under critical soil particle concentration conditions, unit of account adsorbance；
3.3 pairs of balance solution pollutant concentrations and unit adsorbance are fitted and obtain adsorbing parameter value.
5. a kind of joint batch run according to claim 1 determines dispersion coefficient with soil-column test
Method, it is characterised in that：The step 4 obtains concentration distribution of pollutants by soil-column test.
The step 5 obtains dispersion coefficient by software inverting, uses VS2DI softwares, input step
The absorption parameter that batch run is obtained in three, constantly converts diffusion coefficient values, makes concentration distribution calculated curve
Matched with the concentration distribution of pollutants that soil-column test in step 4 is measured, so as to obtain diffusion coefficient values.
The beneficial effects of the invention are as follows：
1. joint batch run of the present invention determines landfill yard lining dispersion coefficient with soil-column test
Method, can easily and effectively predict the diffusion mobility of pollutant in landfill yard lining；
2. determine to adsorb parameter value by the batch run under critical soil particle concentration conditions, with reference to earth pillar
Test to determine dispersion coefficient, acquired results are more reasonable, closer with Practical Project condition；
3. can more accurately for landfill yard liner design provides reference frame.
Brief description of the drawings
Fig. 1 is that a kind of joint batch run determines the method flow diagram of dispersion coefficient with soil-column test；
Specific embodiment
A kind of joint batch run, come the method for determining dispersion coefficient, is comprised the following steps with soil-column test：
Step one, chooses earth material, determines its geotechnological characteristic；
Step 2, configures solution, prepares soil sample；
Step 3, the absorption parameter under critical soil particle concentration conditions is determined using batch run；
Step 4, concentration distribution of pollutants is determined using soil-column test；
Step 5, dispersion coefficient is obtained by software inverting.
Selected geological parameter has grading curve, infiltration coefficient, liquid limit, modeling in the step one
Limit, maximum dry density, optimum moisture content, porosity and proportion；Choose representative heavy metal-polluted
Dye thing is used as test object.
Solution is configured in the step 2 to prepare certain density contamination sources solution, is carried out as needed
Dilution；By after soil sample air-dry, sieving, drying is cooled to room temperature to the preparation soil sample, is put into polybag
In store for future use.
The step 3 use batch run determine the absorption parameter under critical soil particle concentration conditions include with
Lower step：
3.1 by soil sample and pollutant solution mix under isothermal condition vibration a period of time after take supernatant
Liquid is centrifuged, and determines pollutants removal rate；
3.2 constantly adjust soil particle concentration, until clearance tends towards stability, it is dense so as to obtain critical soil particle
Degree, determines the balance solution pollutant concentration under critical soil particle concentration conditions, unit of account adsorbance；
3.3 pairs of balance solution pollutant concentrations and unit adsorbance are fitted and obtain adsorbing parameter value.
The step 4 obtains concentration distribution of pollutants by soil-column test.
The step 5 obtains dispersion coefficient by software inverting, uses VS2DI softwares, input step
The absorption parameter that batch run is obtained in three, constantly converts diffusion coefficient values, makes concentration distribution calculated curve
Matched with the concentration distribution of pollutants that soil-column test in step 4 is measured, so as to obtain diffusion coefficient values.
Claims (6)
1. a kind of method that joint batch run determines dispersion coefficient with soil-column test, it is characterised in that：
Comprise the following steps：
Step one, chooses earth material, determines its geotechnological characteristic；
Step 2, configures solution, prepares soil sample；
Step 3, the absorption parameter under critical soil particle concentration conditions is determined using batch run；
Step 4, concentration distribution of pollutants is determined using soil-column test；
Step 5, dispersion coefficient is obtained by software inverting.
2. a kind of joint batch run according to claim 1 determines dispersion coefficient with soil-column test
Method, it is characterised in that：Selected geological parameter has grading curve, oozes in the step one
Saturating coefficient, liquid limit, plastic limit, maximum dry density, optimum moisture content, porosity and proportion；Selection has
Representational heavy metal contaminants are used as test object.
3. a kind of joint batch run according to claim 1 determines dispersion coefficient with soil-column test
Method, it is characterised in that：Solution is configured in the step 2 molten to prepare certain density contamination sources
Liquid, is diluted as needed；By after soil sample air-dry, sieving, drying is cooled to the preparation soil sample
Room temperature, is put into polybag and stores for future use.
4. a kind of joint batch run according to claim 1 determines dispersion coefficient with soil-column test
Method, it is characterised in that：The step 3 is determined under critical soil particle concentration conditions using batch run
Absorption parameter comprise the following steps：
3.1 by soil sample and pollutant solution mix under isothermal condition vibration a period of time after take supernatant
Liquid is centrifuged, and determines pollutants removal rate；
3.2 constantly adjust soil particle concentration, until clearance tends towards stability, it is dense so as to obtain critical soil particle
Degree, determines the balance solution pollutant concentration under critical soil particle concentration conditions, unit of account adsorbance；
3.3 pairs of balance solution pollutant concentrations and unit adsorbance are fitted and obtain adsorbing parameter value.
5. a kind of joint batch run according to claim 1 determines dispersion coefficient with soil-column test
Method, it is characterised in that：The step 4 obtains concentration distribution of pollutants by soil-column test.
6. a kind of joint batch run according to claim 1 determines dispersion coefficient with soil-column test
Method, it is characterised in that：It is to use VS2DI that the step 5 obtains dispersion coefficient by software inverting
Software, the absorption parameter that batch run is obtained in input step three, constantly converts diffusion coefficient values, makes dense
The concentration distribution of pollutants that degree distribution calculated curve is measured with soil-column test in step 4 matches, so that
To diffusion coefficient values.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511003993.9A CN106932308A (en) | 2015-12-29 | 2015-12-29 | A kind of method for combining batch run with soil-column test to determine dispersion coefficient |
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| CN201511003993.9A CN106932308A (en) | 2015-12-29 | 2015-12-29 | A kind of method for combining batch run with soil-column test to determine dispersion coefficient |
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| CN106932308A true CN106932308A (en) | 2017-07-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505244A (en) * | 2017-08-11 | 2017-12-22 | 上海岩土工程勘察设计研究院有限公司 | A kind of Dispersion Test method suitable for hypotonicity soil |
| CN109813635A (en) * | 2019-01-01 | 2019-05-28 | 中国人民解放军63653部队 | Based on electric field through the device of diffusion method measurement nucleic diffusion coefficient in rock soil medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788552A (en) * | 2010-01-27 | 2010-07-28 | 北京师范大学 | Device and method for simulating migration and transformation of pollutants in freeze-thawing process of soil |
-
2015
- 2015-12-29 CN CN201511003993.9A patent/CN106932308A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788552A (en) * | 2010-01-27 | 2010-07-28 | 北京师范大学 | Device and method for simulating migration and transformation of pollutants in freeze-thawing process of soil |
| CN101788552B (en) * | 2010-01-27 | 2012-11-07 | 北京师范大学 | Device and method for simulating migration and transformation of pollutants in freeze-thawing process of soil |
Non-Patent Citations (3)
| Title |
|---|
| 杨清雷等: "Determination of Diffusion Coefficient and Analysis of Diffusion Factors of Cr(Ⅵ) Ion in Clay Soil", 《TRANSACTIONS OF TIANJIN UNIVERISTY》 * |
| 杨清雷等: "土颗粒浓度对Cd(Ⅱ)吸附影响的试验研究", 《国家安全地球物理丛书（十一）》 * |
| 杨清雷等: "重金属离子在改良黏土中迁移的土柱试验研究", 《国家安全地球物理丛书（十）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505244A (en) * | 2017-08-11 | 2017-12-22 | 上海岩土工程勘察设计研究院有限公司 | A kind of Dispersion Test method suitable for hypotonicity soil |
| CN109813635A (en) * | 2019-01-01 | 2019-05-28 | 中国人民解放军63653部队 | Based on electric field through the device of diffusion method measurement nucleic diffusion coefficient in rock soil medium |
| CN109813635B (en) * | 2019-01-01 | 2021-04-30 | 中国人民解放军63653部队 | Device for measuring diffusion coefficient of nuclide in rock-soil medium based on electric field penetration diffusion method |
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Application publication date: 20170707 |