CN112903390A - Method and device for preparing standard suspended sand concentration field - Google Patents
Method and device for preparing standard suspended sand concentration field Download PDFInfo
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- 239000004576 sand Substances 0.000 title claims abstract description 155
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 238000005303 weighing Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000005070 sampling Methods 0.000 claims description 72
- 230000007246 mechanism Effects 0.000 claims description 31
- 239000013049 sediment Substances 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 12
- 238000005485 electric heating Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000000967 suction filtration Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 6
- 239000000523 sample Substances 0.000 description 45
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004164 analytical calibration Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N2001/2893—Preparing calibration standards
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Abstract
The invention discloses a method and a device for preparing a standard suspended sand concentration field, wherein the method for preparing the standard suspended sand concentration field comprises the following steps: weighing materials; stirring the solution; testing the uniformity of the concentration field of the suspended sand; and preparing a standard suspended sand concentration field. The invention can provide a standard suspended sand concentration field with a standard suspended sand concentration value in a flowing water environment, meets the calibration requirement of suspended sand concentration measurement equipment, and ensures that the suspended sand concentration measurement is more accurate.
Description
Technical Field
The invention relates to the technical field of suspended sand concentration measuring instrument calibration, in particular to a method and a device for preparing a standard suspended sand concentration field.
Background
The value of the concentration of suspended sand in a water body is the quality of dry sediment carried in a water sample of a unit volume, and is an important parameter for researching the problems of reservoir sediment accumulation, port and channel sediment accumulation, channel transportation, water quality environment, beach water and soil loss and the like. Under the dynamic water environment, the problem of accurately measuring the concentration of the suspended sand in the water body is not solved all the time, and different water body environmental conditions influence the measurement result of the concentration of the suspended sand, so that the influence of different concentrations and particle size distributions of silt suspended particles on a standard suspended sand concentration field needs to be researched as soon as possible. In the process of constructing a standard suspended sand concentration field, how to reproduce the standard suspended sand concentration value becomes the greatest importance of research on a suspended sand concentration value calibration method. Therefore, from the research level of the source tracing theory analysis and calibration method, it is increasingly necessary to construct a standard suspended sand concentration field to reproduce the suspended sand concentration value, no matter from the complexity or the urgency of the problem.
At present, a suspended sand concentration field is mostly prepared in a barrel, a water-sand mixture is stirred by a stirrer, the suspended sand concentration field is considered to be uniform under the condition that the uniformity test is not carried out on the suspended sand concentration field, and a suspended sand concentration measuring device is calibrated, so that the calibration requirement is not met in the technical field of measurement and test.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a method and an apparatus for preparing a standard suspended sand concentration field, which can provide an accurate standard suspended sand concentration field, make the calibration of the suspended sand concentration measurement device more accurate, and ensure the measurement of the suspended sand concentration more accurate.
The invention provides a method for preparing a standard suspended sand concentration field, which is characterized by comprising the following steps:
weighing materials, namely weighing a dry sediment sample with the mass m, weighing the total volume v of the sediment sample and pure water, and pouring the weighed sediment sample and pure water into a stirring barrel;
stirring the solution, opening a stirring mechanism in the stirring barrel, adjusting a rotating speed control knob to gradually increase the rotating speed of the stirring mechanism so as to mix the silt sample with the pure water until no sediment sample is precipitated at the bottom of the stirring barrel, and forming a suspended sand concentration field;
testing the uniformity of the suspended sand concentration field, and sampling and detecting the solution in the suspended sand concentration field to obtain the uniformity Es；
Preparing standard suspended sand concentration field, if EsIf the rotating speed is more than 3.0 percent, increasing the rotating speed of the stirring mechanism, and repeating the step of testing the uniformity of the suspended sand concentration field, if E is greater than 3.0 percentsAnd (3) obtaining a standard suspended sand concentration field with a standard suspended sand concentration value S which is equal to or less than 3.0%, wherein the standard suspended sand concentration value S is equal to m/v.
Preferably, the step of testing the uniformity of the concentration field of the suspended sand comprises:
the suspended sand concentration field is sampled, and sampling is simultaneously carried out at a sampling point in the suspended sand concentration field by using a sampling mechanism, wherein the sampling point comprises: n points are uniformly distributed on the upper part of the suspended sand concentration field, N points are uniformly distributed in the middle of the suspended sand concentration field, and N points are uniformly distributed on the lower part of the suspended sand concentration field, wherein N is a positive integer;
water sample treatment, measuring the volume V of the water sample sampled at each sampling pointiSeparating silt in the water sample by using a suction filtration device, drying the silt and weighing the mass M of the siltiCalculating the suspended sand concentration value S of each water sample according to a formulai，Si＝Mi/ViWherein i represents any one of 1 to 3N, SiSuspended sand concentration value, M, for the ith water sampleiIs the quality of silt, V, in the ith water sampleiThe volume of the ith water sample.
Calculating the concentration of suspended sandField uniformity, Es＝(Smax-Smin) S x 100%, where SmaxIs the maximum value of the concentration of suspended sand in a water sample, SminIs the minimum value of the suspended sand concentration in the water sample, and S is the standard suspended sand concentration value.
Preferably, the silt-like particle size in the material weighing step is 0.4 to 120 μm.
Preferably, in the step of testing the uniformity of the concentration field of the suspended sand, the sampling point comprises: a, B, C, D points are uniformly distributed on the upper portion of the suspended sand concentration field, E, F, G, H points are uniformly distributed in the middle of the suspended sand concentration field, and I, J, K, L points are uniformly distributed on the lower portion of the suspended sand concentration field.
Preferably, the A, B, C, D point is 3cm from the top liquid level of the suspended sand concentration field, and the I, J, K, L point is 3cm from the bottom liquid level of the suspended sand concentration field; the A, B, C, D, E, F, G, H, I, J, K, L point is 6cm from the inner wall of the stirring barrel.
Preferably, in the step of testing the uniformity of the suspended sand concentration field, the silt is dried by adopting an electric heating drying oven to adjust the temperature to 150 ℃ and baking for 30 min.
In addition, the invention also provides a device for preparing the standard suspended sand concentration field, which comprises a transparent stirring barrel; a stirring mechanism with adjustable rotating speed is arranged in the stirring barrel; the stirring barrel is communicated with a sampling mechanism; the sampling mechanism comprises a large flask, a first sampling bottle, a second sampling bottle, a third sampling bottle, a negative pressure vacuum pump and a water level measuring needle, wherein the large flask is airtight, the first sampling bottle is provided with N, the N sampling bottles are respectively communicated with the large flask through first hoses and are respectively communicated with the large flask and are respectively communicated with the suspended sand concentration field through first rubber sampling pipes, the N sampling bottles are respectively communicated with the large flask through second hoses and are respectively communicated with the suspended sand concentration field through second rubber sampling pipes, the N sampling bottles are respectively communicated with the large flask through third hoses and are respectively communicated with the suspended sand concentration field through the first rubber sampling pipes, the negative pressure vacuum pump is communicated with the large flask through fourth hoses, the water level measuring needle is provided with N, even fixed set up in the inside of agitator.
Preferably, the stirring mechanism comprises a supporting plate fixedly arranged at the top of the stirring barrel, a shaft rod is arranged on the axis of the stirring barrel, a plurality of propeller type blades are fixedly arranged on the outer wall of the shaft rod at equal intervals, a driving motor for driving the shaft rod to rotate is fixedly arranged on the supporting plate, and the driving motor is electrically connected with a controller.
Preferably, the diameter of the stirring barrel is 40cm, and the height of the stirring barrel is 100 cm.
Preferably, the driving motor is a miniature alternating current speed reducing motor, and the controller is a direct current brushless driving controller.
Compared with the prior art, the invention has the beneficial effects that:
the method for preparing the standard suspended sand concentration field ensures that the suspended sand concentration field meets the standard requirement that the uniformity is not more than 3.0 percent through repeated verification of the uniformity of the suspended sand concentration field, and can obtain (0.1-20) kg/m3The standard suspended sand concentration field in the range solves the problem of (0.1-20) kg/m in the flowing water environment3The calibration of the measuring instrument in the range of suspended sand concentration.
It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of any embodiment of the invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a block flow diagram of a method of formulating a standard suspended sand concentration field;
FIG. 2 is a schematic diagram of the location of a sampling point;
FIG. 3 is a schematic structural diagram of an apparatus for preparing a standard suspended sand concentration field;
fig. 4 is a schematic top view of the mixing tank.
Reference numbers in the figures: 11. a stirring barrel; 12. a stirring mechanism; 13. a sampling mechanism;
21. a support plate; 22. a shaft lever; 23. a propeller type blade; 24. a drive motor; 25. a controller;
31. a large flask; 32. a first sampling bottle; 33. a second sampling bottle; 34. a third sampling bottle; 35. a negative pressure vacuum pump; 36. a water level measuring probe;
321. a first hose; 322. a first rubber sampling tube;
331. a second hose; 332. a second rubber sampling tube;
341. a third hose; 342. a first rubber sampling tube;
351. and a fourth hose.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 2, an embodiment of the present invention provides a method for preparing a standard suspended sand concentration field, including the following steps:
s11, weighing a material, weighing a dry silt sample with the mass m, weighing the total volume v of the silt sample and the pure water, and pouring the weighed silt sample and the pure water into a stirring barrel, wherein the silt sample and the pure water are mixed together for volume weighing because the volume of the silt sample is independently weighed inaccurately;
s12, stirring the solution, turning on a stirring mechanism in the stirring barrel, adjusting a rotating speed control knob to gradually increase the rotating speed of the stirring mechanism to mix the silt sample with the pure water until no sediment sample is precipitated at the bottom of the stirring barrel, and forming a suspended sand concentration field;
s13 testing the uniformity of the suspended sand concentration field, and sampling the solution in the suspended sand concentration field to detect the uniformity Es；
S14 preparing standard sand concentration field, if EsIf the rotating speed is more than 3.0 percent, the rotating speed of the stirring mechanism is increased, the step of testing the uniformity of the suspended sand concentration field is carried out again, and if the rotating speed is more than 3.0 percent, the step E is carried outsAnd (3) obtaining a standard suspended sand concentration field with a standard suspended sand concentration value S which is m/v.
In a preferred embodiment, the step of testing the uniformity of the concentration field of the suspended sand comprises:
the sample of hanging sand concentration field is taken a sample simultaneously with the sampling point department in the hanging sand concentration field of sampling mechanism, and the sampling point includes: n points are uniformly distributed on the upper part of the suspended sand concentration field, N points are uniformly distributed in the middle of the suspended sand concentration field, and N points are uniformly distributed on the lower part of the suspended sand concentration field, wherein N is a positive integer;
water sample treatment, measuring the volume V of the water sample sampled at each sampling pointiSeparating silt in water sample by suction filter, drying silt and weighing mass M of siltiCalculating the suspended sand concentration value S of each water sample according to a formulai，Si＝Mi/ViWherein i represents any one of 1 to 3N, SiSuspended sand concentration value, M, for the ith water sampleiIs the quality of silt, V, in the ith water sampleiThe volume of the ith water sample.
Calculating the uniformity of the suspended sand concentration field, Es＝(Smax-Smin) S x 100%, where SmaxIs the maximum value of the concentration of suspended sand in a water sample, SminIs the minimum value of the suspended sand concentration in the water sample, and S is the standard suspended sand concentration value.
In a preferred embodiment, the silt-like particle size in the material weighing step is 0.4 μm to 120 μm.
In a preferred embodiment, in the step of testing the uniformity of the concentration field of the suspended sand, the sampling points comprise: a, B, C, D points are uniformly distributed on the upper part of the suspended sand concentration field, E, F, G, H points are uniformly distributed in the middle of the suspended sand concentration field, and I, J, K, L points are uniformly distributed on the lower part of the suspended sand concentration field.
In a preferred embodiment, the A, B, C, D point is 3cm from the top liquid level of the suspended sand concentration field, and the I, J, K, L point is 3cm from the bottom liquid level of the suspended sand concentration field; A. b, C, D, E, F, G, H, I, J, K, L points 6cm from the inner wall of the stirring barrel.
In a preferred embodiment, in the step of testing the uniformity of the suspended sand concentration field, the drying of the sediment is carried out by adjusting the temperature to 150 ℃ by using an electric heating drying oven and baking for 30 min.
In some embodiments:
weighing 44g of dry silt sample by using an electronic balance, wherein the dry silt sample is acquired by filtering, drying, crushing and the like, and the particle size range of the silt sample is 0.4-120 mu m. The measuring barrel sleeve group respectively weighs the total volume 44L of the pure water and the silt sample, and the weighed silt sample and the pure water are put into a stirring barrel to be mixed.
And opening a switch of the stirring mechanism, and adjusting the rotating speed control knob to 1500r/min to mix the silt sample and the pure water until no silt sample is precipitated at the bottom of the stirring barrel, so as to form a suspended sand concentration field.
The correspondence between the standard suspended sand concentration value and the stirring speed is shown in table 1 below:
TABLE 1 Standard value of suspended Sand concentration and stirring speed
Testing the uniformity of the concentration field of the suspended sand:
sampling simultaneously with a sampling mechanism at sampling points within a suspended sand concentration field, the sampling points comprising: a, B, C, D points which are 3cm away from the top liquid level of the suspended sand concentration field and are uniformly distributed, E, F, G, H points which are uniformly distributed in the middle of the suspended sand concentration field, I, J, K, L points which are 3cm away from the bottom liquid level of the suspended sand concentration field and are uniformly distributed, and each sampling point is 6cm away from the inner wall of the stirring barrel.
Measuring the volume V of the water sample sampled at each sampling pointiSeparating silt in the water sample by using a suction filtration deviceThe silt is put into an electric heating drying box, the temperature of the electric heating drying box is adjusted to 150 ℃, the electric heating drying box is baked for 30min, and the mass M of the silt is weighediCalculating the suspended sand concentration value S of each water samplei。
And calculating the uniformity of the concentration field of the suspended sand. See table 2 for details:
TABLE 2 test data record table
In addition, referring to fig. 3 to 4, an embodiment of the present invention further provides an apparatus for preparing a standard suspended sand concentration field, including a transparent stirring barrel 11; a stirring mechanism 12 with adjustable rotating speed is arranged in the stirring barrel 11; the stirring barrel 11 is communicated with a sampling mechanism 13; the sampling mechanism 13 comprises a large flask 31, a first sampling bottle 32, a second sampling bottle 33, a third sampling bottle 34, a negative pressure vacuum pump 35 and a water level measuring needle 36, wherein the large flask 31 is closed, the first sampling bottle 32 is provided with N, the N sampling bottles are respectively communicated with the large flask 31 through first hoses 321 and are respectively communicated with the upper part of the suspended sand concentration field through first rubber sampling pipes 322 in a uniformly distributed manner, the N sampling bottles 33 are respectively communicated with the large flask 31 through second hoses 331 and are respectively communicated with the middle part of the suspended sand concentration field through second rubber sampling pipes 332 in a uniformly distributed manner, the N sampling bottles 34 are respectively communicated with the large flask 31 through third hoses 341 and are respectively communicated with the lower part of the suspended sand concentration field through first rubber sampling pipes 342, the negative pressure vacuum pump 35 is communicated with the large flask 31 through a fourth hose 351, the water level measuring needles 36 are provided with N, and are uniformly and fixedly arranged inside the stirring barrel 11.
In this embodiment, a sediment sample and pure water are added into the stirring barrel 11, stirring is performed by the stirring mechanism 12, and the rotation speed of the stirring mechanism 12 is adjusted to ensure that no sediment is deposited at the bottom of the stirring barrel 11, thereby forming a suspended sediment concentration field. Sampling is carried out through the sampling mechanism 13, the detection of the uniformity of the suspended sand concentration field can be completed, and the formation of a standard suspended sand concentration field is ensured for the calibration of detection equipment.
In a preferred embodiment, as shown in fig. 1 and 2, the stirring mechanism 12 includes a supporting plate 21 fixedly disposed on the top of the stirring barrel 11, a shaft 22 is disposed on the axial line of the stirring barrel 11, a plurality of propeller-type blades 23 are fixedly disposed on the outer wall of the shaft 22 at equal intervals, a driving motor 24 for driving the shaft 22 to rotate is fixedly disposed on the supporting plate 21, and the driving motor 24 is electrically connected to a controller 25.
In the present embodiment, the output power of the driving motor 24 can be adjusted by the controller 25, so as to adjust the rotation speed of the propeller blades 23, and facilitate the adjustment of the uniformity of the suspended sand concentration field.
In a preferred embodiment, the mixing drum 11 has a diameter of 40cm and a height of 100 cm.
In a preferred embodiment, the drive motor 24 is a miniature AC gearmotor and the controller 25 is a DC brushless drive controller.
In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, the description of the terms "one embodiment," "some embodiments," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A method for preparing a standard suspended sand concentration field is characterized by comprising the following steps:
weighing materials, namely weighing a dry sediment sample with the mass m, weighing the total volume v of the sediment sample and pure water, and pouring the weighed sediment sample and pure water into a stirring barrel;
stirring the solution, opening a stirring mechanism in the stirring barrel, adjusting a rotating speed control knob to gradually increase the rotating speed of the stirring mechanism so as to mix the silt sample with the pure water until no sediment sample is precipitated at the bottom of the stirring barrel, and forming a suspended sand concentration field;
testing the uniformity of the suspended sand concentration field, and sampling and detecting the solution in the suspended sand concentration field to obtain the uniformity Es；
Preparing standard suspended sand concentration field, if EsIf the rotating speed is more than 3.0 percent, increasing the rotating speed of the stirring mechanism, and repeating the step of testing the uniformity of the suspended sand concentration field, if E is greater than 3.0 percentsAnd (3) obtaining a standard suspended sand concentration field with a standard suspended sand concentration value S which is equal to or less than 3.0%, wherein the standard suspended sand concentration value S is equal to m/v.
2. The method of formulating a standard suspended sand concentration field as claimed in claim 1, wherein said step of testing the uniformity of the suspended sand concentration field comprises:
the suspended sand concentration field is sampled, and sampling is simultaneously carried out at a sampling point in the suspended sand concentration field by using a sampling mechanism, wherein the sampling point comprises: n points are uniformly distributed on the upper part of the suspended sand concentration field, N points are uniformly distributed in the middle of the suspended sand concentration field, and N points are uniformly distributed on the lower part of the suspended sand concentration field, wherein N is a positive integer;
water sample treatment, measuring the volume V of the water sample sampled at each sampling pointiSeparating silt in the water sample by using a suction filtration device, drying the silt and weighing the mass M of the siltiCalculating the suspended sand concentration value S of each water sample according to a formulai，Si＝Mi/ViWhich isWherein i represents any one of 1 to 3N, SiSuspended sand concentration value, M, for the ith water sampleiIs the quality of silt, V, in the ith water sampleiThe volume of the ith water sample.
Calculating the uniformity of the suspended sand concentration field, Es＝(Smax-Smin) S x 100%, where SmaxIs the maximum value of the concentration of suspended sand in a water sample, SminIs the minimum value of the suspended sand concentration in the water sample, and S is the standard suspended sand concentration value.
3. The method of preparing a standard suspended sand concentration field according to claim 2, wherein the silt sample in the material weighing step has a particle size of 0.4 μm to 120 μm.
4. The method of formulating a standard suspended sand concentration field as claimed in claim 3, wherein said step of testing the uniformity of the suspended sand concentration field, said sampling points comprise: a, B, C, D points are uniformly distributed on the upper portion of the suspended sand concentration field, E, F, G, H points are uniformly distributed in the middle of the suspended sand concentration field, and I, J, K, L points are uniformly distributed on the lower portion of the suspended sand concentration field.
5. The method of formulating a standard suspended sand concentration field according to claim 4, wherein said A, B, C, D point is 3cm from the top level of the suspended sand concentration field, said I, J, K, L point is 3cm from the bottom level of the suspended sand concentration field; the A, B, C, D, E, F, G, H, I, J, K, L point is 6cm from the inner wall of the stirring barrel.
6. The method for preparing a standard suspended sand concentration field according to claim 5, wherein in the step of testing the uniformity of the suspended sand concentration field, the drying of the sediment is carried out by adjusting the temperature to 150 ℃ by using an electric heating drying oven and baking for 30 min.
7. A device for preparing a standard suspended sand concentration field is characterized by comprising a transparent stirring barrel; a stirring mechanism with adjustable rotating speed is arranged in the stirring barrel; the stirring barrel is communicated with a sampling mechanism; the sampling mechanism comprises a large flask, a first sampling bottle, a second sampling bottle, a third sampling bottle, a negative pressure vacuum pump and a water level measuring needle, wherein the large flask is airtight, the first sampling bottle is provided with N, the N sampling bottles are respectively communicated with the large flask through first hoses and are respectively communicated with the large flask and are respectively communicated with the suspended sand concentration field through first rubber sampling pipes, the N sampling bottles are respectively communicated with the large flask through second hoses and are respectively communicated with the suspended sand concentration field through second rubber sampling pipes, the N sampling bottles are respectively communicated with the large flask through third hoses and are respectively communicated with the suspended sand concentration field through the first rubber sampling pipes, the negative pressure vacuum pump is communicated with the large flask through fourth hoses, the water level measuring needle is provided with N, even fixed set up in the inside of agitator.
8. The apparatus for preparing a standard suspended sand concentration field according to claim 7, wherein the stirring mechanism comprises a supporting plate fixedly arranged at the top of the stirring barrel, a shaft rod is arranged on the axis of the stirring barrel, a plurality of propeller type blades are fixedly arranged on the outer wall of the shaft rod at equal intervals, a driving motor for driving the shaft rod to rotate is fixedly arranged on the supporting plate, and the driving motor is electrically connected with a controller.
9. The apparatus for preparing a standard suspended sand concentration field according to claim 8, wherein the diameter of the stirring barrel is 40cm, and the height of the stirring barrel is 100 cm.
10. The apparatus for preparing a standard suspended sand concentration field according to claim 9, wherein the driving motor is a micro ac speed reducing motor, and the controller is a dc brushless driving controller.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2341143Y (en) * | 1997-12-10 | 1999-09-29 | 中国科学院成都有机化学研究所 | Sampler |
| CN101246094A (en) * | 2008-03-25 | 2008-08-20 | 中国农业科学院农业资源与农业区划研究所 | Gravity flow type farmland underground leaching liquor collecting device |
| CN203370356U (en) * | 2013-07-11 | 2014-01-01 | 上海翔浩环境检测技术咨询有限公司 | Suspended matter filtering device |
| CN204086242U (en) * | 2014-07-28 | 2015-01-07 | 河海大学 | A kind of experimental provision studied suspension bed sediment and submerged plant growth is coerced |
| CN106198110A (en) * | 2016-08-03 | 2016-12-07 | 北京市环境保护科学研究院 | A kind of road cumulated dust wet type sampler |
| CN206862701U (en) * | 2017-06-27 | 2018-01-09 | 青海锂业有限公司 | Sampler |
| CN207680636U (en) * | 2017-12-12 | 2018-08-03 | 天津大学 | The surge flask that gas dry and increase buffering effect for Solid Phase Extraction are integrated |
| CN110057732A (en) * | 2019-04-22 | 2019-07-26 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of device and scaling method of the continuous calibration suspension concentration of interior OBS dynamic |
-
2021
- 2021-01-26 CN CN202110106038.7A patent/CN112903390A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2341143Y (en) * | 1997-12-10 | 1999-09-29 | 中国科学院成都有机化学研究所 | Sampler |
| CN101246094A (en) * | 2008-03-25 | 2008-08-20 | 中国农业科学院农业资源与农业区划研究所 | Gravity flow type farmland underground leaching liquor collecting device |
| CN203370356U (en) * | 2013-07-11 | 2014-01-01 | 上海翔浩环境检测技术咨询有限公司 | Suspended matter filtering device |
| CN204086242U (en) * | 2014-07-28 | 2015-01-07 | 河海大学 | A kind of experimental provision studied suspension bed sediment and submerged plant growth is coerced |
| CN106198110A (en) * | 2016-08-03 | 2016-12-07 | 北京市环境保护科学研究院 | A kind of road cumulated dust wet type sampler |
| CN206862701U (en) * | 2017-06-27 | 2018-01-09 | 青海锂业有限公司 | Sampler |
| CN207680636U (en) * | 2017-12-12 | 2018-08-03 | 天津大学 | The surge flask that gas dry and increase buffering effect for Solid Phase Extraction are integrated |
| CN110057732A (en) * | 2019-04-22 | 2019-07-26 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of device and scaling method of the continuous calibration suspension concentration of interior OBS dynamic |
Non-Patent Citations (2)
| Title |
|---|
| 赵冲久等: "波流共同作用下粉沙质悬移质运动规律的研究", 《水道港口》 * |
| 高术仙 等: "基于机械式自动搅拌的标准悬沙浓度场测试技术及应用", 《第三十一届全国水动力学研讨会论文集》 * |
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