CN102175491A - Water-sediment compound simulation test device for accurately layering and collecting sediment - Google Patents
Water-sediment compound simulation test device for accurately layering and collecting sediment Download PDFInfo
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- CN102175491A CN102175491A CN 201010616981 CN201010616981A CN102175491A CN 102175491 A CN102175491 A CN 102175491A CN 201010616981 CN201010616981 CN 201010616981 CN 201010616981 A CN201010616981 A CN 201010616981A CN 102175491 A CN102175491 A CN 102175491A
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Abstract
The invention relates to a water-sediment compound simulation test device which is formed by combining a testing column with a built-in layering testing cylinder, wherein an outer cylinder top cover is transparent and detachable; a sampling valve is arranged on a side face; the water replenishing and water sampling operations can be carried out conveniently; and a dewatering valve is arranged on the bottom of the side face. If the device is used for a test, an inner cylinder is taken out firstly, and then the inner cylinder is slowly descended to the outer cylinder by taking a cotton thread by hand after being filled with the acquired field sediment, an evacuation valve is closed, water is slowly filled in from the top of the outer cylinder, and then the test is started. When the sediment sample is needed to be taken, the following operations are performed: exhausting the water of the outer cylinder by using the evacuation valve of the outer cylinder and then taking out the inner cylinder by taking the cotton thread by hand; taking off a PVC (polyvinyl chloride) short plug from one bottom corner of the inner cylinder and pulling out a PVC long nail from an inner cylinder top corner corresponding to the bottom corner by firmly holding a nail cap; inserting gaskets in layers by starting from the top layer and rotating the inner cylinder and gaskets by using the PVC long nail at another corner as a shaft; and then vertically moving the gaskets downwards, thereby guiding the sediment on the layers to fall onto the gaskets. Different layered sediment samples can be conveniently and accurately acquired by performing the operations layer by layer.
Description
Affiliated technical field
The present invention relates to the accurate layering of a cover and gather sedimental water-sediment composite analogy test unit, can be used for the lake water-sediment interface nutritive salt conversion in environmental science and engineering field and the repair mechanisms research of lake sediment.
Background technology
Sediment is the important component part of natural water environment such as lake, lake nutritive salt and pollutant store the storehouse.Lake endogenous material enters water body from sediment need pass through surface deposit, so nutritive salt is very important to the exploration of lake eutrophication mechanism in the migration and the transformation rule research at water-sediment interface.In the simulation test, the layering collection of sediment sample and analysis are the important prerequisites of the vertical characteristic of research sediment.At present, the most organic glass testing columns that adopt wound packages of water-sedimental simulation test, the post bottom is loaded sediment, on the deposition object plane, add water then, the principal character of this device and the problem of existence are: (1) S ﹠ W coexists in the column casing, Qu Shui and can not cause the disturbance at water sediment interface during sediment sample usually after the off-test; (2) testing column is the wound packages structure, and after the water sample sucking-off, tube is dark and caliber is less, is difficult to realize sedimental layering collection.
Summary of the invention
The purpose of this invention is to provide a cover accurately stratified sampling and the lake water-sediment composite analogy test unit low to the water sediment interfacial disturbance, this covering device is simple in structure, cheap, easy to use and sample effect is good.
Technical scheme of the present invention:
Accurately the lake water-sediment composite analogy test unit of stratified sampling comprises testing column (urceolus) and built-in each cover of layering test tube (inner core):
Testing column (urceolus) is processed by the White-opalescent pvc pipe of tubular, bore 15cm, external diameter 16cm, high 100cm.The sealing of PVC disk and the antiseepage of identical material adopted in the bottom, and the transparent organic glass dome of an easy accessibility is installed on the top, tears lid when water filling and moisturizing open, duration of test capping at ordinary times.Urceolus side 50cm highly locate with the same perpendicular line in bottom on have knob discharge water Plastic valve each one, from top to bottom, be respectively water sampling valve and atmospheric valve, the water sampling valve is opened when water sampling, other the time shut; Atmospheric valve is opened when draining emptying, other the time shut.
Built-in deposit test and stratified sampling tube (inner core) are to be the square PVC square of 3 centimetres (every layer of degree of depth of the getting mud) formation that vertically superposes by 10 hollows and thickness, and the interior length of side of square is 6cm, and the outer length of side is 10cm.A square bottom end seal of bottommost.Each PVC square respectively is equipped with a diameter in the position of two corners be 0.5 centimetre circular hole, and all squares vertically pile up the neat high 30cm in back, and the lake sediment that inside can hold 10 * 10 * 30cm3 volume is used for simulation test.
With two long circular holes that pass two jiaos of ten squares for the plastics spike of 32cm, the aperture that diameter is 0.5cm promptly appears after passing 10 squares, at two apertures diameter of riveting over is 0.5cm, the plastics bolt of long 1.5cm can be realized the fixing of whole inner core, cooperate the pad pin at tube two other angle, bottom surface, the whole test tube can be stablized placement.
Slit between the side facing of tube and the layer posts with plastic film wrapped and with adhesive waterproof tape, prevents to take place in the side of tube the mass exchange of water sludge interface.Be that thin cotton thread is so that inner core is placed and taking-up on two nuts on the top of inner core.
The invention has the beneficial effects as follows: (1) sampling thief is simple in structure, easy to operate, can be used for the water-sediment interface nutritive salt migration conversion of shallow lake and the simulation test research of passivation mechanism and restoration of the ecosystem, can enlarge the diameter of urceolus and inner core in addition as required in proportion, open ended water and sediment consumption increase.(2) after the off-test, can realize the layering collection (every layer thickness is 3cm) of sediment sample easily and accurately.
Description of drawings
Fig. 1 is an assembled perspective view of the present invention
Fig. 2 is the design sketch of inner core among the present invention (four kinds visual angle each one)
Among Fig. 1: 1. the transparent cap 2. waters surface 3. urceolus 4. sample taps 5. thin cotton thread 6. inner cores 7. freeing port 8. bases 9. plastics head of a nail 10. plastics spikes, 11. plastics bolts, 12 inner core synusia (the 2nd layer) 13. inner cores, 14. inner core synusia (the 10th layer)
Fig. 2: for the 3-D effect view of inner core, comprise 2 of oblique views, each one on vertical view and side view with the synusia of forming inner core.
Embodiment
In inner core, successively load the lake sediment that mixes when test starts, can add sediment passivation medicament in the fixing degree of depth as required in the filling process, and then continue to cover sediment to filling up inner core (30cm height).Afterwards can portable fine rule of fastening long 80cm on nut, the inner core stable landing is placed into the urceolus inner bottom part, and the 10cm cotton thread that will be higher than urceolus hangs over the proposition of outer drum outer wall whole inner core when making things convenient for sediment sampling.After putting inner core well, the lake water that injects field acquisition along outer tube inner wall is slowly highly located to the 90cm of urceolus, and overlying water is 60cm deeply in the test this moment system.At the plexiglass cover of the good printing opacity of urceolus upper end cover, test can be in outdoor startup.Water sample during the Plastic valve acquisition test that duration of test is highly located by outer tube side wall 50cm, after having gathered water sample, take off the plexiglass cover on top immediately, slowly pour into from the top of urceolus and the lake water of the equal volume of taking a sample as moisturizing, to keep the constancy of volume of duration of test overlying water.
When needing to gather sediment sample, take off the plexiglass cover on urceolus top, open the atmospheric valve of urceolus bottom side bottom, drain the overlying water in the urceolus.The both hands outer cotton thread that hangs of outer tube wall of holding proposes inner core stably, steadily places on the testing table.Successively take the adhesive waterproof tape of inner core lateral surface off; Take out the plastics stub of a plastics spike bottom, arrest this spike and from inner core, extract the plastics spike out at the nut on inner core top.Extract the plastics spike at a diagonal angle out, the plastics spike at another diagonal angle maintains static, and then the different layers square of inner core can be the axle rotation with fixing plastics spike at this moment, thereby realizes the sediment sample in the layering collection simulation system.Concrete detail operations step is: from the superiors of inner core, from inserting the plastic tab of a 20cm * 30cm between the slit of the ground floor and the second layer, to contain sedimental ground floor square afterwards and rotate 90 along one jiao of fixing plastics spike together with plastic tab, mobile vertically downward afterwards thin slice 3-5cm, then the sediment in ground floor (0-3cm) square falls to plastic tab owing to action of gravity; Sediment sample on the plastic tab is scraped, and collect this ground floor sediment with clean valve bag; Two sides with distilled water is cleaned and dried plastic tab is inserted between the slit of second layer square and the 3rd layer of square then, finishes the acquisition operations of the second layer (3-6cm) sediment sample with above method of operating; According to above method of operating, successively finish the collection of ground floor downwards to layer different depth sediment sample second from the bottom, every layer thickness of deposits is 3cm; The square bottom sealing of one deck of the end, sampling operation need take off another spike on the inner core angle earlier, removes after other all square layer, and last one deck square is tipped upside down on the film, directly pours out sediment.
After having got the sediment sample of all layers, the square of breaking when cleaning all samplings, again by claim 4,5,6 method assembling inner core, clean up inner core after, can reuse, the new simulation test of beginning is continued in the combination back.
Claims (7)
1. a cover is used for the water-sediment composite analogy test unit of analysis mode.
2. water according to claim 1-sediment composite analogy test unit is characterized in that: device comprises testing column (urceolus) and built-in sediment layering test tube (inner core).
3. water according to claim 2-sediment composite analogy test unit is characterized in that: testing column (urceolus) top is the dome of tool printing opacity and easy accessibility, makes things convenient for water filling and moisturizing operation; Side tool sampling valve is stratified sampling of water conveniently, has atmospheric valve to be used for quick draining near the side of bottom; Built-in sediment layering test tube (inner core) is to be the square PVC square of 3 centimetres (branch is got the degree of depth of the every layer of mud) formation that vertically superposes by 10 hollows and thickness, a square bottom end seal of bottommost, and do not have the diagonal position in hole to be stained with two bottom surface diameters and the high pad pin that is a centimeter two of ground.
4. water according to claim 3-sediment composite analogy test unit, it is characterized in that: each PVC square of inner core respectively is equipped with a diameter in the position of two corners be 0.5 centimetre circular hole, after all squares vertically pile up neatly, with two long for the plastics spike of 32cm passes the circular hole of two jiaos of ten squares, ten PVC squares are fixedly become one can contain the dark tube of sedimental 30cm.
5. water according to claim 4-sediment composite analogy test unit, it is characterized in that: after ten PVC squares pass its circular hole of two jiaos with the plastics spike, interting diameter at the aperture of two spike bottoms is 0.5cm, and the PVC of long 1.5cm lacks bolt and fixes realizing.
6. water according to claim 5-sediment composite analogy test unit, it is characterized in that: the plastics spike is formed by the PVC plastic processing, and length is 32cm, and it is the nut shape structure of 1cm that an end has thickness; It is the aperture of 0.5cm that the other end has diameter apart from the position of top 1cm.
7. water according to claim 6-sediment composite analogy test unit, it is characterized in that: fix constitute inner core by the vertical stack of square PVC square after, slit between the side facing of tube and the layer is with plastic film wrapped and add adhesive waterproof tape and post, and prevents the mass exchange at place, the synusia slit generation water sludge interface of tube side.Can be that fine rule is so that inner core is placed and taking-up on two nuts on the top of inner core.
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| CN 201010616981 CN102175491B (en) | 2010-12-31 | 2010-12-31 | Water-sediment compound simulation test device for accurately layering and collecting sediment |
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| CN 201010616981 CN102175491B (en) | 2010-12-31 | 2010-12-31 | Water-sediment compound simulation test device for accurately layering and collecting sediment |
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| CN102175491B CN102175491B (en) | 2013-05-15 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157424A (en) * | 2011-12-12 | 2013-06-19 | 同济大学 | Water environment simulation reactor based on water-soil interface |
| CN103217315A (en) * | 2013-04-28 | 2013-07-24 | 北京林业大学 | Foot extracting device for sand |
| CN103439143A (en) * | 2013-08-07 | 2013-12-11 | 中国水产科学研究院南海水产研究所 | Experimental apparatus and method for researching nutrient salt exchange flux of sediment layers |
| CN103645069A (en) * | 2013-12-26 | 2014-03-19 | 中国科学院南京地理与湖泊研究所 | Vertical stratification water sample synchronous sampling device and sampling method thereof |
| CN104655451A (en) * | 2015-02-13 | 2015-05-27 | 南通大学 | In-situ stratified sampling pipe for surface sediments and method |
| CN105784420A (en) * | 2016-04-13 | 2016-07-20 | 浙江大学 | Shallow water deposit and water sample collection device and method thereof |
| CN106198152A (en) * | 2016-09-06 | 2016-12-07 | 天津大学 | A kind of experimental provision obtaining grade stratified sediment sample and application thereof |
| CN106370805A (en) * | 2016-09-30 | 2017-02-01 | 吉林大学 | Device for measuring effect of bioturbation on distribution of pollutants in sediments |
| CN107389384A (en) * | 2017-09-15 | 2017-11-24 | 国家海洋局第二海洋研究所 | A kind of ocean single tube time series sediment trap |
| CN109387390A (en) * | 2018-11-23 | 2019-02-26 | 江苏大学 | A kind of deposit anaerobically incubating device |
| CN109596806A (en) * | 2018-11-23 | 2019-04-09 | 江苏大学 | A kind of anaerobically incubated combination unit of deposit |
| CN113060259A (en) * | 2021-03-17 | 2021-07-02 | 吉林大学 | Collection device of modern lake fine particle silt deposit thing |
| CN113686734A (en) * | 2021-08-17 | 2021-11-23 | 江南大学 | Integrated device and method for simulating micro-plastic migration and target extraction |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157424B (en) * | 2011-12-12 | 2014-10-22 | 同济大学 | Water environment simulation reactor based on water-soil interface |
| CN103157424A (en) * | 2011-12-12 | 2013-06-19 | 同济大学 | Water environment simulation reactor based on water-soil interface |
| CN103217315A (en) * | 2013-04-28 | 2013-07-24 | 北京林业大学 | Foot extracting device for sand |
| CN103439143A (en) * | 2013-08-07 | 2013-12-11 | 中国水产科学研究院南海水产研究所 | Experimental apparatus and method for researching nutrient salt exchange flux of sediment layers |
| CN103645069A (en) * | 2013-12-26 | 2014-03-19 | 中国科学院南京地理与湖泊研究所 | Vertical stratification water sample synchronous sampling device and sampling method thereof |
| CN104655451A (en) * | 2015-02-13 | 2015-05-27 | 南通大学 | In-situ stratified sampling pipe for surface sediments and method |
| CN104655451B (en) * | 2015-02-13 | 2017-08-01 | 南通大学 | One kind is used for surface deposit Stratified Sampling pipe in situ and method |
| CN105784420A (en) * | 2016-04-13 | 2016-07-20 | 浙江大学 | Shallow water deposit and water sample collection device and method thereof |
| CN106198152B (en) * | 2016-09-06 | 2018-10-16 | 天津大学 | A kind of experimental provision obtaining grade stratified sediment sample and its application |
| CN106198152A (en) * | 2016-09-06 | 2016-12-07 | 天津大学 | A kind of experimental provision obtaining grade stratified sediment sample and application thereof |
| CN106370805A (en) * | 2016-09-30 | 2017-02-01 | 吉林大学 | Device for measuring effect of bioturbation on distribution of pollutants in sediments |
| CN106370805B (en) * | 2016-09-30 | 2018-03-16 | 吉林大学 | The device that measurement bioturbation is distributed to pollutant in deposit |
| CN107389384A (en) * | 2017-09-15 | 2017-11-24 | 国家海洋局第二海洋研究所 | A kind of ocean single tube time series sediment trap |
| CN107389384B (en) * | 2017-09-15 | 2023-04-25 | 国家海洋局第二海洋研究所 | Marine single tube time series sediment catcher |
| CN109387390A (en) * | 2018-11-23 | 2019-02-26 | 江苏大学 | A kind of deposit anaerobically incubating device |
| CN109596806A (en) * | 2018-11-23 | 2019-04-09 | 江苏大学 | A kind of anaerobically incubated combination unit of deposit |
| CN109596806B (en) * | 2018-11-23 | 2022-11-08 | 江苏大学 | Combined device for anaerobic incubation of sediments |
| CN113060259A (en) * | 2021-03-17 | 2021-07-02 | 吉林大学 | Collection device of modern lake fine particle silt deposit thing |
| CN113686734A (en) * | 2021-08-17 | 2021-11-23 | 江南大学 | Integrated device and method for simulating micro-plastic migration and target extraction |
| CN113686734B (en) * | 2021-08-17 | 2022-09-06 | 江南大学 | Integrated device and method for simulating micro plastic migration and target extraction |
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