CN214585393U - Earth pillar test device - Google Patents
Earth pillar test device Download PDFInfo
- Publication number
- CN214585393U CN214585393U CN202023058014.9U CN202023058014U CN214585393U CN 214585393 U CN214585393 U CN 214585393U CN 202023058014 U CN202023058014 U CN 202023058014U CN 214585393 U CN214585393 U CN 214585393U
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- soil column
- base
- earth pillar
- fine sand
- sampling
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- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 35
- 239000004576 sand Substances 0.000 claims abstract description 23
- 239000010865 sewage Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 72
- 239000002689 soil Substances 0.000 claims description 49
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 239000011241 protective layer Substances 0.000 abstract description 5
- 238000010992 reflux Methods 0.000 abstract description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 4
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 4
- 241001330002 Bambuseae Species 0.000 abstract description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 4
- 239000011425 bamboo Substances 0.000 abstract description 4
- 230000003204 osmotic effect Effects 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract description 3
- 238000009530 blood pressure measurement Methods 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003269 fluorescent indicator Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011158 quantitative evaluation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses an earth pillar test device, including overflow-reflux unit, earth pillar appearance main part device, vacuum sampling device, slight shock exhaust apparatus and portable mobile device, earth pillar section of thick bamboo lateral wall is equipped with the equidistance sampling tube, and sampling tube upper portion is equipped with the overflow hole. The utility model discloses to the fine sand medium characteristic, adopt intelligent calculation display screen to show pressure measurement flood peak and osmotic coefficient in the post in real time, can sensitively observe the small disturbance influence that sample etc. arouse, confirm fine sand pollution protective layer thickness, to the type of general sewage and pollutant kind not the restriction, the precision is high and portable, has extensive adaptability; the protective capability of other media as a pollutant protective layer can be calculated through the protective capability of the fine sand.
Description
Technical Field
The utility model relates to a soil body sewage inoxidizing coating effective thickness's test device, concretely relates to soil column test device.
Background
The pollution degree of the underground water is increasingly serious, and the prevention and the treatment of the pollution of the underground water are urgent. How to better, more reasonably and more economically prevent and control groundwater pollution by utilizing natural conditions is a hot point direction commonly considered by the current scientific and technological community. Wherein, how to reasonably determine the thickness of the soil protective layer under the natural condition of the local pollutants is often a technical problem of water pollution prevention and control engineering. Open-air actual measurement often faces experimental apparatus and does not lay well, and osmotic coefficient and concentration change are difficult to obtain through real-time supervision simultaneously, and the soil body excavation has more disturbances, and to water-deficient mountain area and arid area, open-air experiment often can't go on in situ because of the lack of water.
In the existing soil column device, the experimental medium is often unsaturated loam, and the experimental target is the problem of water distribution and migration in the loam. And often the design is coarser, and is bulky, and difficult transport lacks intelligent display device, and because input waterhead can not be stable, the influence estimation that causes to sample gas not fully get rid of, sample disturbance etc. is not enough, leads to the sample time long, and the experimental result precision is not high, has wasted a large amount of time and manpower and materials. And the problems of difficulty in water taking, sand-water co-flow and the like of soil body media such as on-site fine sand, clay and the like during sampling are solved, and the problem can not be effectively solved in a short time on a working site. Therefore, the effective thickness of the sewage protective layer under natural conditions cannot be determined quickly and accurately, and the effective thickness can only be selected conservatively by experience, so that pollution prevention and control measures are lack of scientificity, and the prevention and control cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
To the technical problem, an object of the utility model is to provide an earth pillar test device, can be when the sample real-time observation thief hole flood peak pressure, the osmotic coefficient change, the small disturbance that produces when taking a sample is surveyd and quantitative evaluation, in addition, through the adsorption aspect of flood peak pressure, osmotic coefficient, pollutant, in solving the saturated soil, the definite problem of sewage inoxidizing coating effective thickness can evaluate the protective capacities of different medium pollutants, can overcome the difficult technical problem that the pollution inoxidizing coating was selected by experience under the current condition.
In order to achieve the above object, the utility model adopts the following technical scheme:
an earth pillar test device comprising:
the soil column cylinder is made of transparent material and has a structure with an upper end and a lower end which are opened, the upper end opening is provided with a top cover in a sealing way, the lower end opening is provided with a base in a sealing way, and the soil column cylinder is filled with fine sand,
the top cover is connected with sewage conveying equipment through a first drainage tube;
a drain hole is formed in the side wall of the bottom of the base, a drain pipe is connected to the drain hole, and a flowmeter with a valve is connected to the drain pipe;
the base is a cavity structure with an opening at one end, the opening end of the base is hermetically connected with the opening at the lower end of the earth pillar barrel, the cavity structure of the base is communicated with the inner cavity of the earth pillar barrel after connection, and a water permeable plate and a gravel layer are sequentially arranged in the cavity of the base from top to bottom;
a plurality of sampling tubes are arranged on the side wall of the soil column barrel at equal intervals along the height direction of the soil column barrel, and an overflow pipe is arranged above the sampling tubes;
the air pump is connected with any one of the sampling tubes through an air pumping tube, and a sampling bottle is connected on the air pumping tube between the air pump and the sampling tube;
the micro-vibration mechanism is arranged at the bottom of the base through a base bracket;
a pressure sensor is embedded in the fine sand of the soil column cylinder at the same height with each sampling tube, and the pressure sensors are respectively connected with a computer through data lines;
a water outlet hole communicated with the first drainage tube is formed in the bottom of the side wall of one side of the water tank, and a water stop valve is arranged on the first drainage tube;
the device is characterized by also comprising a second drainage tube, wherein a cavity is arranged at the upper end of fine sand in the inner cavity of the soil column barrel, an overflow port is arranged on the side wall of one side of the cavity and connected with the second drainage tube, the water outlet of the second drainage tube is connected with an overflow water tank, the wall of one side of the overflow water tank is connected with the water tank through a return pipe, and a small-sized water pump is arranged on the return pipe;
the interior of the sampling tube is provided with a filter.
The fine sand is fine sand with a gravel diameter of 100-200 meshes.
The sewage conveying equipment is a water tank.
The bottom of base is equipped with the base support, sets up in the base support the microseism mechanism still includes a handling device, be equipped with on the handling device and supply the soil post to place the ring channel of embedding, the bottom of handling device is equipped with removes the wheel, is equipped with on the handling device and fixes the mount of soil post section of thick bamboo is equipped with computer strorage device in addition on the handling device.
The soil column barrel comprises a plurality of soil column barrel section units with the same diameter, and the soil column barrel section units are fixedly connected through a fixed frame in a sealing mode.
Compared with the prior art, the utility model discloses following beneficial effect has:
the overflow-reflux device part of the soil column test of the utility model can ensure constant water level of sewage supply, recycle overflowed sewage, improve the utilization rate of sewage and reduce the risk of sewage overflow;
secondly, putting a fluorescent agent into the sewage as an indicator, so as to improve the accuracy of the deionized water displacement time;
and thirdly, the sampling bottle is arranged between the sampling tube and the vacuum pump, and the filter is arranged in the sampling tube, so that the problem of difficulty in taking water samples due to negative pressure during sampling of soil column media such as silty sand, clay and the like can be solved while the water samples are not polluted.
And fourthly, the embedded pressure sensor is connected with a computer, the computer can conveniently and visually observe the experimental result through a display, observe the disturbance effect caused by sampling, conveniently and accurately analyze the influence factors of the test, and improve the test precision.
And a carrying and moving device is additionally arranged, so that the defects of heaviness and inconvenience in carrying of the earth pillar instrument after sample loading are overcome, and the carrying and the moving of the device are facilitated.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a conveying device of the present invention;
the figures in the drawings represent:
in the figure, 1 water tank, 11 first water stop valve, 12 first drainage tube, 13 second drainage tube, 14 overflow water tank, 15 water pump, 16 return tube, 2 top cover, 3 base, 4 soil column barrel, 41 permeable plate, 42 fixing clamp, 43 artificial gravel, 44 second water stop valve, 45 flow meter, 46 water outlet hole, 47 sampling tube, 48 overflow hole, 49 filter, 5 sampling bottle, 6 air pump, 7 sensor, 71 data line, 72 computer, 8 bottom bracket, 81 microseismic mechanism, 9 movable carrying device, 91 rotating wheel, 92 annular groove, 93 fixing bracket, 94 handle, 95 bottom bracket, 96 computer storage device.
Detailed Description
The technical solutions of the present invention will be described in detail with reference to the drawings and specific embodiments so that those skilled in the art can understand the technical solutions of the present invention more clearly.
Examples
As shown in fig. 1, an earth pillar test apparatus includes: the device comprises an overflow-reflux device, a main earth pillar instrument device arranged below the overflow-reflux device, a micro-seismic exhaust device arranged below the main earth pillar instrument device and a transportable mobile device;
the overflow-reflux device comprises a water tank for containing sewage, a first drainage tube and a second drainage tube with valves, a water pump and an overflow water tank;
the main body earth pillar instrument device comprises an earth pillar cylinder, a top cover, a base, a permeable plate, a pressure sensor, a data line, a computer and a flowmeter, wherein equidistant sampling pipes are arranged on the side wall of the earth pillar cylinder, an overflow hole is formed in the upper part of the uppermost sampling pipe, the upper end of the earth pillar cylinder is in rotary sealing with the top cover through threads, and the lower end of the earth pillar cylinder is in rotary sealing with the base through threads;
a base support and a micro-seismic mechanism which are larger than the area of the base are arranged below the main earth pillar device, and the micro-seismic mechanism and the base support are fixed by four screws;
the portable moving device can conveniently move the main body earth pillar instrument device for a long distance through the handle and the bottom moving wheel, the annular groove and the fixing frame for the earth pillar to place the embedded part are arranged on the carrying device, the stability of the testing device can be ensured, and the carrying device is provided with a computer storage device.
The water tank is connected with a top cover of the main body earth pillar device through a first drainage tube; a drill hole is arranged in the middle of the top cover, and a rubber gasket is arranged in the drill hole and is tightly sealed with the drainage tube;
one end of the overflow water tank is connected with the overflow hole, and the other end of the overflow water tank is connected with the water pump; and the outlet of the water pump is connected with the water tank. The water tank can be collected with unnecessary sewage again, practices thrift experimental sewage, reduces the excessive risk of sewage.
A water outlet hole is formed in the side wall of the base; the water outlet hole is provided with a flow meter with a valve; an artificial gravel layer and a water permeable plate with four clamping supports are arranged in the base, and the diameter of the water permeable plate is slightly smaller than the inner diameter of the base;
as the preferred embodiment of the utility model, the placing height of the water tank is greater than that of the main earth pillar instrument device, thereby effectively ensuring that the sewage is continuously supplied to the earth pillar instrument;
as the preferred embodiment of the utility model, the upper and lower ends of the soil column casing are internally provided with threaded steel rings, and the top cover and the base are externally provided with threaded steel rings; the soil column barrel, the top cover and the base are all made of toughened glass, and the steel ring is made of stainless steel.
As the preferred embodiment of the utility model, the sampling tube is a stainless steel sampling tube with a gasket at the joint with the soil column barrel, and the sampling tube is internally provided with a filter and is a detachable and telescopic device; the indicator for observing the sewage displacement process adopts a fluorescent agent;
as the utility model discloses a preferred embodiment, consider that the fine sand of powder is as medium filled soil column section of thick bamboo, the seepage flow speed is slow, easily plugs up the apopore, forms vacuum state at the lateral wall, draws experimental water sample with the aspiration pump, and the sampling bottle is arranged in between sampling tube and the aspiration pump, and the water sample that conveniently draws directly flows into the sampling bottle, and does not disturbed by the aspiration pump.
As the preferred embodiment of the utility model, the soil column medium adopts the fine sand, the pressure sensor is embedded at the same height with the sampling tube, the pressure sensor is connected with the computer through the data line, and the pressure measuring water head, the permeability coefficient and the like can be directly read out;
as the utility model discloses a preferred embodiment, be equipped with on the handling device and supply the soil post to place the ring channel of embedding, handling device's bottom is equipped with removes the wheel, is equipped with fixedly on the handling device the mount of a soil post section of thick bamboo is equipped with computer strorage device in addition on the handling device, can fix earth pillar appearance device after experimental the end, removes the wheel convenience through handle and bottom and moves main part earth pillar appearance long distance.
Utilize the utility model discloses method that earth pillar test device tested includes following step:
a: placing a layer of artificial gravel on the base, and placing a water permeable plate at the clamping position above the gravel; carrying out rough treatment on the side wall of the soil column barrel, placing the soil column barrel above a base, and rotating the soil column barrel in alignment with the screw thread until the soil column barrel is tightly sealed; inserting the whole device into a base bracket, mounting a micro-vibration mechanism in the base, and fixing the micro-vibration mechanism by using screws;
b: filling fine sand into the soil column barrel layer by layer, burying pressure sensors, wherein the number of the pressure sensors is multiple, one pressure sensor is buried in the fine sand corresponding to the height of each sampling tube, each pressure sensor is connected with a computer through a data line, part of sand is filled, part of deionized water is filled, and meanwhile, a bottom micro-vibration mechanism is opened for exhaust treatment, so that the uniform compactness of a sand sample is ensured, and gas is completely exhausted;
c: after sand filling is finished, closing a valve on a drain pipe, injecting a large amount of deionized water downwards into the upper part of the earth pillar instrument device, after saturation is carried out for 24 hours, opening a water outlet valve to drain water, then saturating the earth pillar from bottom to top by changing the direction, repeating the test for many times to completely remove gas and impurities, and covering a top cover after the completion;
d: taking out the water tank, placing the water tank at a high position, closing a valve on the drain pipe, and putting the fluorescent agent serving as an indicator into the water tank;
e: connecting a first drainage tube with a top cover, wherein the top cover is an organic glass cover, opening a valve on the first drainage tube to enable sewage to enter the soil column, connecting an overflow port with an overflow water tank by using a second drainage tube, opening a water pump, and pumping the sewage flowing out of the overflow water tank back to a water tank for recycling;
f: inserting a computer power supply, opening an upper valve of a drain pipe, installing a flow meter, regularly recording the water head pressure, the permeability coefficient and the reading of the flow meter, and starting an air suction pump to take a water sample when the deionized water is completely replaced by the sewage with the fluorescent indicator;
g: analyzing the water quality of the collected water sample, and calculating the thickness of the protective layer of the fine sand of the pollutant powder after obtaining a result;
h: after the test is finished, the earth pillar instrument device is conveniently transported through the transportable moving device.
Claims (5)
1. An earth pillar test device comprising:
the soil column cylinder is made of transparent material and has a structure with an upper end and a lower end which are opened, the upper end opening is provided with a top cover in a sealing way, the lower end opening is provided with a base in a sealing way, and the soil column cylinder is filled with fine sand,
the top cover is connected with sewage conveying equipment through a first drainage tube;
a drain hole is formed in the side wall of the bottom of the base, a drain pipe is connected to the drain hole, and a flowmeter with a valve is connected to the drain pipe;
the base is a cavity structure with an opening at one end, the opening end of the base is hermetically connected with the opening at the lower end of the earth pillar barrel, the cavity structure of the base is communicated with the inner cavity of the earth pillar barrel after connection, and a water permeable plate and a gravel layer are sequentially arranged in the cavity of the base from top to bottom;
a plurality of sampling tubes are arranged on the side wall of the soil column barrel at equal intervals along the height direction of the soil column barrel, and an overflow pipe is arranged above the sampling tubes;
the air pump is connected with any one of the sampling tubes through an air pumping tube, and a sampling bottle is connected on the air pumping tube between the air pump and the sampling tube;
the micro-vibration mechanism is arranged at the bottom of the base through a base bracket;
a pressure sensor is embedded in the fine sand of the soil column cylinder at the same height with each sampling tube, and the pressure sensors are respectively connected with a computer through data lines;
the sewage conveying equipment is a water tank, a water outlet hole communicated with the first drainage tube is formed in the bottom of the side wall of one side of the water tank, and a water stop valve is arranged on the first drainage tube;
the device is characterized by also comprising a second drainage tube, wherein a cavity is arranged at the upper end of fine sand in the inner cavity of the soil column barrel, an overflow port is arranged on the side wall of one side of the cavity and connected with the second drainage tube, the water outlet of the second drainage tube is connected with an overflow water tank, the wall of one side of the overflow water tank is connected with the water tank through a return pipe, and a small-sized water pump is arranged on the return pipe;
the interior of the sampling tube is provided with a filter.
2. The soil column test device according to claim 1, wherein the fine sand is fine sand with a gravel diameter of 100-200 meshes.
3. The soil column test device according to claim 1, characterized in that a base bracket is arranged at the bottom of the base, and the micro-seismic mechanism is arranged in the base bracket.
4. The soil column test device according to claim 1, further comprising a carrying device, wherein the carrying device is provided with an annular groove for placing the soil column, the bottom of the carrying device is provided with a moving wheel, the carrying device is provided with a fixing frame for fixing the soil column barrel, and the carrying device is further provided with a computer storage device.
5. The soil column test device according to claim 1, wherein the soil column casing comprises a plurality of soil column casing section units with the same diameter, and the soil column casing section units are fixedly connected through a fixed frame in a sealing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023058014.9U CN214585393U (en) | 2020-12-17 | 2020-12-17 | Earth pillar test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023058014.9U CN214585393U (en) | 2020-12-17 | 2020-12-17 | Earth pillar test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214585393U true CN214585393U (en) | 2021-11-02 |
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ID=78333553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023058014.9U Expired - Fee Related CN214585393U (en) | 2020-12-17 | 2020-12-17 | Earth pillar test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214585393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114994245A (en) * | 2022-05-19 | 2022-09-02 | 浙江大学 | Microuniverse test device and method for simulating migration and transformation of pollutants in multi-media |
-
2020
- 2020-12-17 CN CN202023058014.9U patent/CN214585393U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114994245A (en) * | 2022-05-19 | 2022-09-02 | 浙江大学 | Microuniverse test device and method for simulating migration and transformation of pollutants in multi-media |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |