CN209784112U - Survey device of soil aggregate stability - Google Patents
Survey device of soil aggregate stability Download PDFInfo
- Publication number
- CN209784112U CN209784112U CN201920437516.0U CN201920437516U CN209784112U CN 209784112 U CN209784112 U CN 209784112U CN 201920437516 U CN201920437516 U CN 201920437516U CN 209784112 U CN209784112 U CN 209784112U
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- soil
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- 239000002688 soil aggregate Substances 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000002689 soil Substances 0.000 claims abstract description 42
- 238000004088 simulation Methods 0.000 claims abstract description 23
- 239000007921 spray Substances 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000003556 assay Methods 0.000 claims 5
- 238000005070 sampling Methods 0.000 abstract description 6
- 238000002791 soaking Methods 0.000 abstract description 3
- 238000009736 wetting Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 239000012615 aggregate Substances 0.000 description 4
- 238000012216 screening Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 238000007605 air drying Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013075 data extraction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
A device for measuring the stability of soil aggregate comprises a bracket, a rainfall simulation device and a sleeve screen; a grating bottom plate and a water collecting tank are arranged at the bottom of the bracket; the rainfall simulation device comprises a water tank, a water pump, a water pipe, a water control valve, a water pressure gauge and a rainwater nozzle, wherein the water tank is fixedly arranged on a bottom plate of the bracket, the water pump is arranged in the water tank, one end of the water pipe is fixedly connected with the water pump, the other end of the water pipe is fixedly provided with the rainwater nozzle, and the water pipe is fixedly provided with the water control valve and the rainwater pressure gauge; the nested sieve is composed of a sieve frame, a first layer sieve, a second layer sieve, a third layer sieve, a fourth layer sieve, a fifth layer sieve and a soil retaining sieve, wherein the sieve frame is vertically and fixedly arranged on a bottom plate of the support, and the first layer sieve, the second layer sieve, the third layer sieve, the fourth layer sieve, the fifth layer sieve and the soil retaining sieve are sequentially arranged on the sieve frame from top to bottom. The beneficial effects are that: the real environment of soil soaking and wetting can be simulated according to different rainfall intensities, so that the soil aggregate is more accurately formed, and the sampling and detecting accuracy is improved.
Description
Technical Field
The utility model particularly relates to a survey device of soil aggregate stability.
background
The wet screening method is the most common method for measuring the stability of soil aggregates, and the existing wet screening method is to completely soak a soil sample in deionized water, control the soil sample for a period of soaking time, then use a dry screening method to select soil water-stable aggregates, and perform data extraction calculation. The method has the disadvantages that the method does not accord with the actual environmental conditions of soil in rainfall weather, the measured data has errors, the rainwater generally has the problem of scouring erosion to the soil in the rainfall weather, the scouring erosion intensity is different according to different rainfall intensities, and the measured data of the stability of soil aggregates are different under the influence of the conditions. Therefore, the most accurate method for measuring the rainfall weather soil water stability is to soak the soil in a rainfall simulation state, but the existing measuring device does not have a special matched device capable of measuring the rainfall simulation soil stability.
Disclosure of Invention
The utility model aims at providing a can simulate rainfall weather and carry out the survey device that the rainwater soaked to soil in order to solve the equipment defect and not enough that above-mentioned soil aggregate stability survey method exists.
in order to achieve the purpose, the technical scheme adopted by the device for measuring the stability of the soil aggregates comprises a bracket, a rainfall simulation device and a sleeve screen; a grid bottom plate is arranged at the bottom of the support, and a water collecting tank is arranged below the bottom plate; the rainfall simulation device comprises a water tank, a water pump, a water pipe, a water control valve, a water pressure gauge and a rainwater nozzle, wherein the water tank is fixedly arranged on a bottom plate of the bracket, the water pump is arranged in the water tank, one end of the water pipe is fixedly connected with the water pump, the other end of the water pipe is fixedly provided with the rainwater nozzle, and the water control valve and the water pressure gauge are fixedly arranged on the water pipe; the nested screen consists of a screen frame, a first layer screen, a second layer screen, a third layer screen, a fourth layer screen, a fifth layer screen and a soil retaining screen, wherein the screen frame is vertically and fixedly arranged on a bottom plate of the support, and the first layer screen, the second layer screen, the third layer screen, the fourth layer screen, the fifth layer screen and the soil retaining screen are sequentially arranged along the screen frame from top to bottom; the sleeve sieve is arranged right below the rainwater spray head; the sieve holes on the first layer of sieve, the second layer of sieve, the third layer of sieve, the fourth layer of sieve and the fifth layer of sieve are sequentially reduced; the soil blocking sieve is a filter sieve.
The water collecting tank on the bracket can be detached.
The size of the opening of the water control valve on the rainfall simulation device can be uniformly controlled and adjusted.
The diameter of a rainwater spray head on the rainfall simulation device is larger than that of the sleeve screen, and 4.0mm water leakage holes are uniformly formed in the rainwater spray head.
The distance between a rainwater spray head on the rainfall simulation device and the first layer of sieve is 500 mm.
The sieve holes on the first layer sieve, the second layer sieve, the third layer sieve, the fourth layer sieve and the fifth layer sieve of the sleeve sieve are 5mm, 2mm, 1mm, 0.5mm and 0.25mm in sequence.
The utility model has the advantages that: the real environment of soil soaking and wetting can be simulated according to different rainfall intensities, so that the soil aggregate is more accurately formed, and the sampling and detection accuracy is improved; the equipment is simple to manufacture, convenient to operate, low in cost and easy to popularize.
Drawings
FIG. 1 is a schematic structural view of the present invention;
In the drawings: the device comprises a support 1, a bottom plate 11, a water collecting tank 12, a rainfall simulation device 2, a water tank 21, a water pump 22, a water pipe 23, a water control valve 24, a water pressure gauge 25, a rainwater spray head 26, a sleeve screen 3, a screen frame 31, a first-layer screen 32, a second-layer screen 33, a third-layer screen 34, a fourth-layer screen 35, a fifth-layer screen 36 and a soil retaining screen 37.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail with reference to the embodiments.
As shown in the attached figure 1, the device for measuring the stability of the soil aggregates comprises a bracket 1, a rainfall simulation device 2 and a sleeve screen 3; a grid bottom plate 11 is arranged at the bottom of the support 1, and a water collecting tank 12 is arranged below the bottom plate 11; the rainfall simulation device 2 comprises a water tank 21, a water pump 22, a water pipe 23, a water control valve 24, a water pressure meter 25 and a rainwater spray head 26, wherein the water tank 21 is fixedly arranged on the bottom plate 11 of the bracket 1, the water pump 22 is arranged in the water tank 21, one end of the water pipe 23 is fixedly connected with the water pump 22, the other end of the water pipe 23 is fixedly provided with the rainwater spray head 26, and the water pipe 23 is fixedly provided with the water control valve 24 and the water pressure meter 25; the set screen 3 consists of a screen frame 31, a first layer screen 32, a second layer screen 33, a third layer screen 34, a fourth layer screen 35, a fifth layer screen 36 and a soil retaining screen 37, wherein the screen frame 31 is vertically and fixedly arranged on the bottom plate 11 of the support 1, and the first layer screen 32, the second layer screen 33, the third layer screen 34, the fourth layer screen 35, the fifth layer screen 36 and the soil retaining screen 37 are sequentially arranged along the screen frame 31 from top to bottom; the sleeve screen 3 is arranged right below the rainwater spray head 26; the screen holes on the first layer screen 32, the second layer screen 33, the third layer screen 34, the fourth layer screen 35 and the fifth layer screen 36 are reduced in sequence; the soil blocking screen 37 is a filter screen.
The water collecting tank 12 on the bracket 1 can be detached.
The opening size of the water control valve 24 on the rainfall simulation device 2 can be uniformly controlled and adjusted.
The diameter of the rainwater spray head 26 on the rainfall simulation device 2 is larger than that of the sleeve screen 3, and 4.0mm water leakage holes are uniformly formed in the rainwater spray head.
The distance between the rain water spray head 26 on the rainfall simulation device 2 and the first layer of screen 32 is 500 mm.
The screen holes on the first layer screen 32, the second layer screen 33, the third layer screen 34, the fourth layer screen 35 and the fifth layer screen 36 of the set screen 3 are 5mm, 2mm, 1mm, 0.5mm and 0.25mm in sequence.
Example 1
The utility model provides a method for determining soil aggregate stability, equipment adopts the utility model discloses device for determining soil aggregate stability specifically comprises the following steps:
1. Sampling: the samples are collected by taking care of the soil humidity, should not be too dry or too wet, and are preferably collected when the soil does not stick to the shovel and does not deform by contact. The sampling area was 10cm2, and the depth was taken from bottom to top in layers, as needed. The sampling is representative, common plough layers are sampled in two layers, the sampling point is not less than 10cm2, soil blocks are not extruded carefully, and the original structural state is kept as much as possible. The soil deformed by the direct contact with the shovel outside the clod is stripped off, about 1.5-2kg of the soil inside the clod is uniformly taken out and placed in a wooden box or an iron box (for preventing extrusion) to be brought back to the room.
2. Sample air drying treatment: the original-state soil sample brought back is firstly dried in the air, when the original-state soil sample is slightly dried, the soil block is gently divided into small soil blocks with the diameter of about 1cm along the natural structure surface, the soil blocks are prevented from being crushed by mechanical pressure, the coarse roots and the small stone blocks are removed, the soil blocks are placed on paper to be dried in the air, and the air is dried for later use.
3. Selecting a test sample: a50 g sample of air-dried soil was weighed by quartering method as a measurement sample.
4. Loading a sample into a sieve: soil test samples are placed in the first layer of screen 32 of the set screen 3, and the first layer of screen 32, the second layer of screen 33, the third layer of screen 34, the fourth layer of screen 35, the fifth layer of screen 36 and the retaining screen 37 of the set screen 3 are sequentially overlapped along the vertical direction of the screen frame 31.
5. Simulating rainfall: placing the sleeve screen 3 with the measurement sample placed on the right below a rainwater spray head 26 of the rainfall simulation device 2, adjusting the distance between the rainwater spray head 26 and a first layer of screen 32 to be 500mm, ensuring that the rainwater spray head 26 completely covers the first layer of screen 32, starting a water pump 22, and enabling the rainwater spray head 26 to begin to perform rainfall on the first layer of screen 32.
6. Simulation setting: the rainfall is adjusted by adjusting a water control valve 24 and a water pressure gauge 25 of the rainfall simulation device 2 to adjust the water spraying state of the rainwater spray head 26, the diameter of water drops sprayed by the rainwater spray head 26 is single particle size of 4.0mm, and the diameter of the sleeve screen 3 is 200 mm. For example, the duration is controlled to be 5 minutes, when the water control valve 24 is opened to the minimum angle of 0 degree, the precipitation is 33.8375mm, which is equivalent to a large heavy storm; when the water control valve 24 is opened to the minimum angle of 180 degrees, the precipitation is 4.65mm, which is equivalent to a small rain. After the rainfall was finished, the mixture was allowed to stand for 5 minutes. Rainwater sprayed out of the sleeve screen 3 by the rainwater spray head 26 falls on the bottom plate 11 of the bracket 1, flows into the water collecting tank 12, and is detached and dumped after the test.
7. Extracting sample agglomerates: the whole set of sieves 2 is dried by hand while being carefully swung left and right, and when the first layer sieve 32, the second layer sieve 33, the third layer sieve 34, the fourth layer sieve 35 and the fifth layer sieve 36 are separated, the aggregates blocking the sieve holes are knocked off by a palm several times while being carefully knocked on the sieve walls until the soil mass on each sieve does not leak.
8. And (3) sample aggregate treatment, namely independently collecting soil samples in the first layer of sieve 32, the second layer of sieve 33, the third layer of sieve 34, the fourth layer of sieve 35, the fifth layer of sieve 36 and the soil retaining sieve 37, drying the soil samples at 60 ℃ for 48 hours until the soil samples are constant in weight, then independently weighing the soil samples, and respectively calculating the percentage content of aggregates with each particle size fraction of more than 5mm, 5-2mm, 2-1mm, 1-0.5mm, 0.5-0.25mm and less than 0.25 mm.
Claims (6)
1. The utility model provides a survey device of soil aggregate stability which characterized in that: comprises a bracket (1), a rainfall simulation device (2) and a sleeve screen (3); a grid bottom plate (11) is arranged at the bottom of the support (1), and a water collecting tank (12) is arranged below the bottom plate (11); the rainfall simulation device (2) consists of a water tank (21), a water pump (22), a water pipe (23), a water control valve (24), a water pressure meter (25) and a rainwater spray head (26), wherein the water tank (21) is fixedly arranged on a bottom plate (11) of the support (1), the water pump (22) is arranged in the water tank (21), one end of the water pipe (23) is fixedly connected with the water pump (22), the other end of the water pipe (23) is fixedly provided with the rainwater spray head (26), and the water control valve (24) and the water pressure meter (25) are fixedly arranged on the water pipe (23); the nested screen (3) consists of a screen frame (31), a first layer of screen (32), a second layer of screen (33), a third layer of screen (34), a fourth layer of screen (35), a fifth layer of screen (36) and a soil blocking screen (37), wherein the screen frame (31) is vertically and fixedly arranged on a bottom plate (11) of the support (1), and the first layer of screen (32), the second layer of screen (33), the third layer of screen (34), the fourth layer of screen (35), the fifth layer of screen (36) and the soil blocking screen (37) are sequentially arranged along the screen frame (31) from top to bottom; the sleeve screen (3) is arranged right below the rainwater spray head (26); the screen holes on the first layer of screen (32), the second layer of screen (33), the third layer of screen (34), the fourth layer of screen (35) and the fifth layer of screen (36) are reduced in sequence; the soil blocking screen (37) is a filter screen.
2. The soil aggregate stability assay device of claim 1, wherein: the water collecting tank (12) on the bracket (1) is detachable.
3. The soil aggregate stability assay device of claim 1, wherein: the opening size of the water control valve (24) on the rainfall simulation device (2) can be uniformly controlled and adjusted.
4. The soil aggregate stability assay device of claim 1, wherein: the diameter of a rainwater spray head (26) on the rainfall simulation device (2) is larger than that of the sleeve screen (3), and 4.0mm water leakage holes are uniformly formed in the rainwater spray head.
5. The soil aggregate stability assay device of claim 1, wherein: the distance between a rainwater spray head (26) on the rainfall simulation device (2) and the first layer of screen (32) is 500 mm.
6. The soil aggregate stability assay device of claim 1, wherein: the sieve holes on the first layer of sieve (32), the second layer of sieve (33), the third layer of sieve (34), the fourth layer of sieve (35) and the fifth layer of sieve (36) of the set sieve (3) are 5mm, 2mm, 1mm, 0.5mm and 0.25mm in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920437516.0U CN209784112U (en) | 2019-04-02 | 2019-04-02 | Survey device of soil aggregate stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920437516.0U CN209784112U (en) | 2019-04-02 | 2019-04-02 | Survey device of soil aggregate stability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209784112U true CN209784112U (en) | 2019-12-13 |
Family
ID=68801089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920437516.0U Expired - Fee Related CN209784112U (en) | 2019-04-02 | 2019-04-02 | Survey device of soil aggregate stability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209784112U (en) |
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2019
- 2019-04-02 CN CN201920437516.0U patent/CN209784112U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 |