CN101915690B - Soil column freeze-thaw simulation device with unpliant ceramic cup during freeze-thaw process - Google Patents
Soil column freeze-thaw simulation device with unpliant ceramic cup during freeze-thaw process Download PDFInfo
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- CN101915690B CN101915690B CN2010102633405A CN201010263340A CN101915690B CN 101915690 B CN101915690 B CN 101915690B CN 2010102633405 A CN2010102633405 A CN 2010102633405A CN 201010263340 A CN201010263340 A CN 201010263340A CN 101915690 B CN101915690 B CN 101915690B
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Abstract
The invention discloses a pillar freeze thawing simulation device with not easily broken clay head during the process, relating to a freeze thawing simulation device. The present invention sloves the problem that the clay head is easy to be broken in the pillar freeze thawing simulation process. The device is characterized in that: a freeze-thaw column is externally coated with heat preservation material, and one soil solution extraction pipe is inserted into every layer of soil inside the freeze-thaw column and extends out of the freeze-thaw column. The method comprises the steps of: reversely filling soil in the freeze-thaw column layer by layer and embedding one soil solution extraction pipe respectively; adding water to soil, aging until the water-added soil becomes stable and then freeze-thawing the soil for a cycle; after the freeze-thaw cycle ends, extracting the soil solution of every layer and extracting the soil samples layer by layer. The device and the method are suitable for the research on the state of various factors inside the soil on condition of freeze-thaw.
Description
Technical field
The present invention relates to a kind of freeze thawing analogue means.
Background technology
Unfreezing is one of important climatic factor in seasonal freeze thawing district, and to soil physical properties, microflora and composition, greenhouse gas emission, and dissolubility carbon, nitrogen content all have appreciable impact in the soil.The timely extraction of the soil liquid and mensuration can accurately reflect the response of soil to unfreezing.In research in the past, most cultivation topsoils, and ignored the influence of unfreezing to other soil layer.And that the extraction of soil liquid sampling is K
2SO
4Extraction, this method has been destroyed the structure of soil, can not reflect the real conditions of the soil liquid.Therefore, development one cover is applicable to the soil column analogue means under the Freezing-Melting Condition, and can continuous nondestructive collection soil solution, and is most important.
" alternate freezing and thawing is handled the Dynamic variation of wetland soil soluble iron down " that Yu Xiaofei etc. deliver discloses a kind of earth pillar freeze thawing analogue means, but this device does not have the pot clay end protective device, and pot clay end fractures in frozen-thaw process easily.
Summary of the invention
The present invention is in order to solve in earth pillar freeze thawing simulation process, the problem that pot clay end fractures in frozen-thaw process easily, thereby provide a kind of in frozen-thaw process the pot clay end earth pillar freeze thawing analogue means of frangible not.
The pot clay end earth pillar freeze thawing analogue means of frangible not in frozen-thaw process; It comprises freeze thawing post, N root soil liquid extraction tube, adiabator layer and freeze thawing device; Said every soil liquid extraction tube includes pot clay end and plexi-glass tubular; Said pot clay end is a porous structure, and the Kong Junyu plexi-glass tubular on the said pot clay end is communicated with, and the tube wall edge of said pot clay end and plexi-glass tubular is tightly connected; Coat adiabator layer on the lateral wall of freeze thawing post; Be filled with N layer soil in the freeze thawing post, all corresponding soil liquid extraction tube in said every layer of soil, the pot clay end of said every soil liquid extraction tube all inserts in the soil of its respective layer; The end of the plexi-glass tubular in every soil liquid extraction tube all stretches out outside the freeze thawing post; The freeze thawing device is used for the soil of freeze thawing post is carried out freeze thawing; Said N is a positive integer; Every soil liquid extraction tube also comprises protective sleeve, and said protective sleeve is enclosed within on the pot clay end, has a plurality of through holes on the said protective sleeve, and the quantity in the hole on the quantity of said through hole and the pot clay end is identical, and corresponding one by one.
Based on the earth pillar soluble component extraction method of the earth pillar freeze thawing analogue means of said apparatus, it is realized by following steps:
Step 1, in the freeze thawing post, successively oppositely insert N layer soil, form earth pillar, and in every layer of soil, imbed a soil liquid extraction tube;
Step 2, the soil in the freeze thawing post are annotated and are added water and ageing to earth pillar Stability Analysis of Structures, make the inside and outside ionic equilibrium that reaches of soil liquid extraction tube;
Step 3, the freezing and thawing cycle of earth pillar experience after adopting the freeze thawing device with ageing in the freeze thawing post;
Step 4, after the described freezing and thawing cycle of step 3 finishes, extract the soil liquid of N layer soil respectively, and in N layer soil, successively extract soil sample, be used to carry out the soil sample analysis of physical and chemical property.
It is 30 days that soil described in the step 2 in the freeze thawing post is annotated the digestion time that adds water and ageing.
The method of every layer the soil liquid is in the N of extraction described in the step 4 layer soil: adopt the syringe needle of syringe to stretch into respectively in each soil liquid extraction tube, extract the solution in each soil liquid extraction tube.
The present invention can be simultaneously to the cultivation of a plurality of soil layer soil; And then the observation freeze thawing drives element or the migration conversion of nutrient in whole earth pillar down; And the process that the process and the soil soluble component of earth pillar freeze thawing cultivation are collected combines together; Reduce factor in the collection process, therefore the data of detected soluble component are accurate, precision is high, efficient is high.Than conventional method, efficient of the present invention has improved 2 times, and precision improves more than 20%.
Description of drawings
Fig. 1 be apparatus of the present invention structural representation; Fig. 2 is the schematic flow sheet of the inventive method.
Embodiment
Embodiment one, combination Fig. 1 explain this embodiment; The pot clay end earth pillar freeze thawing analogue means of frangible not in frozen-thaw process; It comprises freeze thawing post 1, N root soil liquid extraction tube, adiabator layer 3 and freeze thawing device; Said every soil liquid extraction tube includes pot clay end 21 and plexi-glass tubular 22; Said pot clay end 21 is a porous structure, and the Kong Junyu plexi-glass tubular 22 on the said pot clay end 21 is communicated with, and said pot clay end 21 is tightly connected with the tube wall edge of plexi-glass tubular 22; Coat adiabator layer 3 on the lateral wall of freeze thawing post 1; Be filled with N layer soil in the freeze thawing post 1, all corresponding soil liquid extraction tube in said every layer of soil, the pot clay end 21 of said every soil liquid extraction tube all inserts in the soil of its respective layer; The end of the plexi-glass tubular 22 in every soil liquid extraction tube all stretches out outside the freeze thawing post 1; The freeze thawing device is used for the soil of freeze thawing post 1 is carried out freeze thawing; Said N is a positive integer.
In this embodiment, the height of intercepting freeze thawing post 1 tubing as required, overcoat insulation material 3 guarantees that exchange heat mainly appears at the earth pillar upper surface, coincide with natural situation.
Embodiment two, this embodiment and embodiment one described in frozen-thaw process pot clay end not the difference of the earth pillar freeze thawing analogue means of frangible be; Every soil liquid extraction tube also comprises protective sleeve 23; Said protective sleeve 23 is enclosed within on the pot clay end 21; Have a plurality of through holes on the said protective sleeve 23, the quantity in the hole on the quantity of said through hole and the pot clay end 21 is identical, and corresponding one by one.
Protective sleeve 23 in this embodiment is used for protecting pot clay end 21 to fracture at frozen-thaw process.
Embodiment three, this embodiment and embodiment one or two described in frozen-thaw process pot clay end not the difference of the earth pillar freeze thawing analogue means of frangible be; It also comprises plug 4, and the end seal of the plexi-glass tubular 22 in said plug 4 and the soil liquid extraction tube is connected.
Embodiment four, this embodiment and embodiment three described in frozen-thaw process pot clay end not the difference of the earth pillar freeze thawing analogue means of frangible be that the internal diameter of the through hole on the pot clay end 21 is 0.2 micron ~ 0.5 micron.
The inside diameter ranges of the through hole on the pot clay end 21 in this embodiment can guarantee that the solubility composition gets in the soil liquid extraction tube.
Embodiment five, this embodiment and embodiment one, two or four described in frozen-thaw process pot clay end not the difference of the earth pillar freeze thawing analogue means of frangible be that the freeze thawing device is alternating temperature refrigerator-freezer or freeze thawing machine.
The difference of embodiment six, this embodiment and embodiment five described earth pillar freeze thawing analogue means is that freeze thawing post 1 is a PPR freeze thawing post.
Embodiment seven, this embodiment and embodiment one, two, four or six described in frozen-thaw process pot clay end not the difference of the earth pillar freeze thawing analogue means of frangible be that the thickness of said every layer of soil is 10cm.
Embodiment eight, combine Fig. 2 that this embodiment is described, based on embodiment one described in frozen-thaw process the pot clay end earth pillar soluble component extraction method of the earth pillar freeze thawing analogue means of frangible not, it is realized by following steps:
Step 1, in freeze thawing post 1, successively oppositely insert N layer soil, form earth pillar, and in every layer of soil, imbed a soil liquid extraction tube;
Step 2, the soil in freeze thawing post 1 are annotated and are added water and ageing to earth pillar Stability Analysis of Structures, make the inside and outside ionic equilibrium that reaches of soil liquid extraction tube;
Step 3, the freezing and thawing cycle of earth pillar experience after adopting the freeze thawing device with ageing in the freeze thawing post 1;
Step 4, after the described freezing and thawing cycle of step 3 finishes, extract the soil liquid of N layer soil respectively, and in N layer soil, successively extract soil sample, be used to carry out the soil sample analysis of physical and chemical property.
It is 30 days that soil described in the step 2 in freeze thawing post 1 is annotated the digestion time that adds water and ageing.
The method of every layer the soil liquid is in the N of extraction described in the step 4 layer soil: adopt the syringe needle of syringe to stretch into respectively in each soil liquid extraction tube, extract the solution in each soil liquid extraction tube.
In this embodiment, the soil liquid of extraction is used for the analytical test to soluble component, and the front and back of physicochemical property that the soil sample of extraction is used to analyze the solid phase part of soil change.
Claims (6)
1. the pot clay end earth pillar freeze thawing analogue means of frangible not in frozen-thaw process; It is characterized in that: it comprises freeze thawing post (1), N root soil liquid extraction tube, adiabator layer (3) and freeze thawing device; Said every soil liquid extraction tube includes pot clay end (21) and plexi-glass tubular (22); Said pot clay end (21) is a porous structure; Kong Junyu plexi-glass tubular (22) on the said pot clay end (21) is communicated with, and said pot clay end (21) is tightly connected with the tube wall edge of plexi-glass tubular (22); Coat adiabator layer (3) on the lateral wall of freeze thawing post (1); Be filled with N layer soil in the freeze thawing post (1), all corresponding soil liquid extraction tube in said every layer of soil, the pot clay end of said every soil liquid extraction tube (21) all inserts in the soil of its respective layer; The end of the plexi-glass tubular (22) in every soil liquid extraction tube all stretches out outside the freeze thawing post (1); The freeze thawing device is used for the soil of freeze thawing post (1) is carried out freeze thawing; Said N is a positive integer; Every soil liquid extraction tube also comprises protective sleeve (23); Said protective sleeve (23) is enclosed within on the pot clay end (21); Said protective sleeve has a plurality of through holes on (23), and the quantity in the hole on the quantity of said through hole and the pot clay end (21) is identical, and corresponding one by one.
2. according to claim 1 in frozen-thaw process the pot clay end earth pillar freeze thawing analogue means of frangible not, it is characterized in that it also comprises plug (4), the end seal of the plexi-glass tubular (22) in said plug (4) and the soil liquid extraction tube is connected.
3. according to claim 1 and 2 in frozen-thaw process the pot clay end earth pillar freeze thawing analogue means of frangible not, the internal diameter that it is characterized in that the through hole on the pot clay end (21) is 0.2 micron ~ 0.5 micron.
4. according to claim 3 in frozen-thaw process the pot clay end earth pillar freeze thawing analogue means of frangible not, it is characterized in that the freeze thawing device is alternating temperature refrigerator-freezer or freeze thawing machine.
According to claim 1,2 or 4 described in frozen-thaw process the pot clay end earth pillar freeze thawing analogue means of frangible not, it is characterized in that freeze thawing post (1) is a PPR freeze thawing post.
6. according to claim 5 in frozen-thaw process the pot clay end earth pillar freeze thawing analogue means of frangible not, it is characterized in that the thickness of said every layer of soil is 10cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102633405A CN101915690B (en) | 2010-08-26 | 2010-08-26 | Soil column freeze-thaw simulation device with unpliant ceramic cup during freeze-thaw process |
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| CN2010102633405A CN101915690B (en) | 2010-08-26 | 2010-08-26 | Soil column freeze-thaw simulation device with unpliant ceramic cup during freeze-thaw process |
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| CN101915690A CN101915690A (en) | 2010-12-15 |
| CN101915690B true CN101915690B (en) | 2012-05-30 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048852A (en) * | 2014-06-15 | 2014-09-17 | 齐齐哈尔大学 | Device for extracting soil solution in freeze-thawing process |
| CN104330339B (en) * | 2014-11-08 | 2017-02-22 | 内蒙古农业大学 | Simulator for solute migration under freeze-thaw actions |
| CN105806659A (en) * | 2016-05-24 | 2016-07-27 | 青岛理工大学 | Device for obtaining pore solution in cement-based material and method for analyzing components of pore solution |
| CN106706501B (en) * | 2017-02-22 | 2019-03-01 | 中国水利水电科学研究院 | A kind of measurement system and method for dilative soil saturation coefficient of transmissibility |
| CN107356726B (en) * | 2017-08-22 | 2023-05-12 | 中国科学院西北生态环境资源研究院 | Indoor simulation system for permafrost degradation process |
| CN107271473B (en) * | 2017-08-22 | 2023-06-30 | 中国科学院西北生态环境资源研究院 | Indoor simulation system for influence of freeze thawing process on soil environment |
| CN109596810B (en) * | 2018-12-25 | 2020-10-27 | 中国地质大学（北京） | Method for simulating and detecting distribution of colored soluble components in soil freeze-thawing process |
| CN114062645A (en) * | 2020-08-05 | 2022-02-18 | 北京市农林科学院 | Method for predicting loss of nitrogen in soil under freezing and thawing action |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1361420A (en) * | 2000-12-26 | 2002-07-31 | 中国科学院、水利部成都山地灾害与环境研究所 | Initial-state in-situ soil solution ion measuring system |
| CN101324488A (en) * | 2007-06-13 | 2008-12-17 | 中国科学院沈阳应用生态研究所 | Batch collecting device of soil solution of different soil layer depth |
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2010
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1361420A (en) * | 2000-12-26 | 2002-07-31 | 中国科学院、水利部成都山地灾害与环境研究所 | Initial-state in-situ soil solution ion measuring system |
| CN101324488A (en) * | 2007-06-13 | 2008-12-17 | 中国科学院沈阳应用生态研究所 | Batch collecting device of soil solution of different soil layer depth |
Non-Patent Citations (3)
| Title |
|---|
| Edwards L W..The effect of alternate freezing and thawing on aggragate stability and aggragate size distribution on some Prince Edward Island soils.《J Soil Sci》.1991,第42卷(第2期),193-204. * |
| 于晓菲等.冻融交替处理下湿地土壤可溶性铁的动态变化研究.《环境科学》.2010,第31卷(第5期),1387-1394. * |
| 邹元春等.不同水文情势下环形湿地土壤铁的时空分布特征.《环境科学》.2009,第30卷(第7期),2059-2064. * |
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