CN113640045A - Non-compression soil sampling device for soil pollution condition investigation - Google Patents
Non-compression soil sampling device for soil pollution condition investigation Download PDFInfo
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- CN113640045A CN113640045A CN202110882741.7A CN202110882741A CN113640045A CN 113640045 A CN113640045 A CN 113640045A CN 202110882741 A CN202110882741 A CN 202110882741A CN 113640045 A CN113640045 A CN 113640045A
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- 238000005527 soil sampling Methods 0.000 title claims abstract description 88
- 238000007906 compression Methods 0.000 title claims abstract description 25
- 238000003900 soil pollution Methods 0.000 title claims abstract description 25
- 238000011835 investigation Methods 0.000 title claims abstract description 24
- 239000002689 soil Substances 0.000 claims abstract description 97
- 238000005553 drilling Methods 0.000 claims abstract description 51
- 230000006835 compression Effects 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 239000004927 clay Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
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Classifications
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
Abstract
The invention relates to the technical field of soil sampling, in particular to a non-compression soil sampling device for investigating soil pollution conditions; comprises a drilling pipe, a soil sampling pipe and a soil protecting bag; the upper end of the drilling pipe is connected with a drilling and pressing end of an external hydraulic machine, the lower end of the drilling pipe is provided with a blade foot, and an opening of the blade foot is smaller than the inner diameter of the soil taking pipe; the soil sampling pipe is coaxially arranged in the drilling pipe, and the lower end of the soil sampling pipe extends to the blade foot; an annular bagging groove is formed in the inner wall of the lower portion of the soil sampling pipe, and soil protection bags with downward openings are stacked in the bagging groove; according to the invention, through the three-layer design of the drilling pipe, the soil sampling pipe and the soil protection bag, the compression of soil in the sampling process can be effectively avoided, the soil with a set depth can be accurately collected, the physical parameters such as the porosity and the water content of undisturbed soil are maintained, in addition, the diffusion of volatile organic pollutants in a soil sample can be effectively prevented by the soil protection bag, and the accuracy of the investigation of the soil pollution condition is ensured.
Description
Technical Field
The invention relates to the technical field of soil sampling, in particular to a non-compression soil sampling device for investigating soil pollution conditions.
Background
According to the regulations of the soil pollution prevention and control law of the people's republic of China, the usage is changed to the land for housing, public management and public service, and the soil pollution condition is investigated according to the regulations before the change. When the land becomes a scarce resource, the supervision of land circulation and the like is stricter, and the requirement on the accuracy of soil pollution condition investigation is higher and higher.
In practical investigation, not only the soil level pollution condition of the land needs to be grasped, but also the pollution level in the vertical direction needs to be found. The accurate spatial distribution survey data of pollutants can provide powerful basis for the environmental management and the subsequent repair engineering of the land parcel. Traditional soil pollution situation investigation sampling device causes the compression to original state soil easily, can not accurate reaction sample correspond the actual degree of depth, causes the deviation of investigation pollution degree of depth and vertical scope.
At present, to the sampling of soil non-compression, patent CN101403658B discloses an earth sampling device under water, adopts tether to drag out the sample with flexible inner wall sample, can't effectively support weak soil at the flexible inner wall of taking out the in-process, causes the destruction of original soil sequence easily, has in addition, to gathering deep soil, and the device adopts once to eat soil jacking, and whole section earth pillar takes out, and the actual operation degree of difficulty is big, and the flexibility is not strong. In addition, the film hose is folded and stored in the space between the outer wall layer and the middle layer, and is required to be refilled when the point location is moved every time, so that the working efficiency is low.
Disclosure of Invention
Solves the technical problem
Aiming at the defects in the prior art, the invention provides a non-compression soil sampling device for soil pollution condition investigation, which can effectively solve the problems that the soil pollution condition investigation sampling device in the prior art is easy to compress undisturbed soil, cannot accurately reflect the actual depth corresponding to a sample, and causes the investigation of the deviation of the pollution depth and the vertical range.
Technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention provides a non-compression soil sampling device for soil pollution condition investigation, which comprises a drilling pipe, a soil sampling pipe and a soil protection bag, wherein the drilling pipe is connected with the soil sampling pipe; the upper end of the drilling pipe is connected with a drilling and pressing end of an external hydraulic machine, the lower end of the drilling pipe is provided with a blade foot, and an opening of the blade foot is smaller than the inner diameter of the soil taking pipe; the soil sampling pipe is coaxially arranged in the drilling pipe, and the lower end of the soil sampling pipe extends to the blade foot; the soil sampling pipe is characterized in that an annular bagging groove is formed in the inner wall of the lower portion of the soil sampling pipe, soil protection bags with downward openings are stacked in the bagging groove and can gradually extend out of the bagging groove along with soil feeding drilling of the drilling pipe and move towards the upper portion of the soil sampling pipe.
When in use, firstly, a sampling point position is determined according to a point distribution scheme, and surface impurities are removed; then the soil protection bag is folded and plugged into a bagging groove of the soil sampling pipe, the soil sampling pipe is placed into the drilling pipe from the upper end of the drilling pipe, and the lower end of the soil sampling pipe extends to the blade foot, so that the soil sampling pipe and the drilling pipe form a non-compression soil sampling device; then pressing the uncompressed soil sampling device into a target depth soil layer through a hydraulic machine tool, and taking out the uncompressed soil sampling device; finally, the soil sampling pipe is pulled out, the soil protection bag and the soil sample are taken out, and the sampling of the soil layer with the target depth is completed; under the action of a hydraulic machine tool, the cutting edge breaks the soil and jacks in, the soil protection bag continuously extends out along with the soil-eating drill, the soil protection bag carries a soil sample to enter the upper part of the soil sampling pipe, and the sliding friction force between the soil protection bag and the inner wall of the soil sampling pipe is negligible, so that the compression on the soil in the sampling process can be effectively avoided, the soil with a set depth can be accurately collected, the physical parameters such as the porosity and the water content of the undisturbed soil are kept, and in addition, the soil protection bag can also effectively prevent the diffusion of volatile organic pollutants in the soil sample, and the accuracy of the investigation of the soil pollution condition is ensured; in the process of taking out the soil sample, the soil taking pipe and the soil protecting bag are taken out together, so that the original soil sequence and structure are effectively protected by the supporting effect of the soil taking pipe; the soil protection bag is stored at the bottom of the soil sampling pipe and is bagged to form a whole, so that the soil sampling pipe can be prefabricated and assembled, and can be taken and used at any time during drilling and sampling, thereby improving the soil sampling efficiency; meanwhile, the soil protection bag and the soil sampling pipe are independent of the drilling pipe, one section of the soil can be drilled, a section of sample can be taken out, and the construction workability and flexibility of soil sampling at different depths are improved.
Furthermore, a check clamp capable of being smoothly turned upwards is arranged on the inner wall of the soil-taking pipe at the lower end of the bagging groove. Through the setting of non return card, can make soil advance only and do not retreat to hold the soil sample, make the soil sampling pipe extract the in-process soil sample and can not drop.
Furthermore, the drilling pipe above the blade foot is a split type multi-section assembled pipe body, and adjacent assembled pipe bodies are connected through threads. Through the setting of body is assembled to the multistage, can realize creeping into the regulation of tub actual length, and then can take a sample to darker soil layer
Furthermore, a top cover plate is clamped at the upper end of the soil sampling pipe. Through the setting of top apron, can avoid upper debris to fall into through the drilling pipe and get in the native pipe.
Further, top apron upper end is provided with the spread groove, the top apron passes through the spread groove and is connected with outside steel pipe, outside steel pipe can pass the multistage and assemble the body and extend to the drilling pipe upper end and contradict with the weight end of boring of outside hydraulic pressure machines.
Furthermore, the drilling pipe is a high-strength corrosion-resistant stainless steel pipe with the diameter of 60-100mm, and the opening of the blade foot is 45-85 mm.
Furthermore, the soil sampling pipe is a PVC pipe with the inner wall coated with polytetrafluoroethylene.
Furthermore, the soil protection bag is made of high-strength polyethylene materials, the friction coefficient between the soil protection bag and the inner wall of the soil sampling pipe is less than 0.05, the puncture resistance of the soil protection bag is greater than 5N, and the thickness of the soil protection bag is less than 1 mm.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
according to the invention, through the three-layer design of the drilling pipe, the soil sampling pipe and the soil protection bag, the compression of soil in the sampling process can be effectively avoided, the soil with a set depth can be accurately collected, the physical parameters such as the porosity and the water content of undisturbed soil are maintained, in addition, the diffusion of volatile organic pollutants in a soil sample can be effectively prevented by the soil protection bag, and the accuracy of the investigation of the soil pollution condition is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic cross-sectional view of a non-compressed soil sampling device according to the present invention with the bottom portion thereof not being sampled;
FIG. 2 is a schematic cross-sectional view of a non-compressed soil sampling device of the present invention during bottom sampling;
FIG. 3 is a top cross-sectional view of an uncompressed soil sampling device of the present invention.
The reference numerals in the drawings denote: 1. drilling a pipe; 2. a soil sampling pipe; 3. a soil protection bag; 4. a blade foot; 5. bagging grooves; 6. a check card; 7. a thread; 8. a top cover plate; 9. connecting grooves; 10. and (6) sampling soil.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example (b):
as shown in fig. 1-3, a non-compression soil sampling device for soil pollution condition investigation comprises a drilling pipe 1, a soil sampling pipe 2 and a soil protection bag 3; the upper end of the drilling pipe 1 is connected with a drilling and pressing end of an external hydraulic machine, the lower end of the drilling pipe 1 is provided with a blade foot 4, and the opening of the blade foot 4 is smaller than the inner diameter of the soil sampling pipe 2; the soil sampling pipe 2 is coaxially arranged in the drilling pipe 1, and the lower end of the soil sampling pipe extends to the blade foot 4; an annular bagging groove 5 is formed in the inner wall of the lower portion of the soil sampling pipe 2, a soil protection bag 3 with a downward opening is stacked in the bagging groove 5, and the soil protection bag 3 can gradually extend out and move towards the upper portion of the soil sampling pipe 2 along with soil feeding drilling of the drilling pipe 1.
When in use, firstly, a sampling point position is determined according to a point distribution scheme, and surface impurities are removed; then the soil protection bag 3 is folded and plugged into a bagging groove 5 of the soil sampling pipe 2, and the soil sampling pipe 2 is placed into the drilling pipe 1 from the upper end of the drilling pipe 1, and the lower end of the soil sampling pipe extends to a blade foot 4, so that the soil sampling pipe and the drilling pipe 1 form a non-compression soil sampling device; then pressing the uncompressed soil sampling device into a target depth soil layer through a hydraulic machine tool, and taking out the uncompressed soil sampling device; finally, the soil sampling pipe 2 is pulled out, the soil protection bag 3 and the soil sample 10 are taken out, and sampling of the soil layer with the target depth is completed; under the action of a hydraulic machine, the cutting edge 4 breaks the soil and jacks in, the soil protection bag 3 continuously extends out along with the soil-eating drill, the soil protection bag 3 carries the soil sample 10 to enter the upper part of the soil sampling pipe 2, and the sliding friction force between the soil protection bag 3 and the inner wall of the soil sampling pipe 2 is negligible.
The soil pollution condition investigation soil sampling compression measurement results obtained by sampling by the method are shown in the following table:
| point location | Soil layer | Depth (m) | Sampling length (m) | Amount of compression (m) |
| SS1 | Miscellaneous fill | 0-1.5 | 1.485 | 0.015 |
| SS2 | Soil for tillage and planting | 0-1.5 | 1.491 | 0.009 |
| SS3 | Powdery clay | 1.5-3.0 | 1.493 | 0.007 |
| SS4 | Powdery clay | 3.0-4.5 | 1.486 | 0.014 |
| SS5 | Silt silty clay | 4.5-6.0 | 1.489 | 0.011 |
| SS6 | Silty sandy soil | 4.5-6.0 | 1.496 | 0.004 |
Therefore, it can be seen from the above table that, through the three-layer design of the drilling pipe, the soil sampling pipe and the soil protection bag, the compression to the soil in the sampling process can be effectively avoided, the soil with the set depth can be accurately collected, the physical parameters such as the original state soil porosity and the water content are kept, in addition, the soil protection bag 3 can also effectively prevent the diffusion of volatile organic pollutants in the soil sample 10, and the accuracy of the soil pollution condition investigation is ensured.
As an optional scheme, a non-return clamp 6 capable of being smoothly turned upwards is arranged on the inner wall of the soil sampling pipe 2 at the lower end of the bagging groove 5. Through the setting of non return card 6, can make soil advance only and do not retreat to hold soil sample 10, make soil sampling pipe 2 extract in-process soil sample 10 can not drop.
As an optional scheme, the drilling pipe 1 above the blade foot 4 is a split type multi-section assembled pipe body, and adjacent assembled pipe bodies are connected through threads 7. Through the setting of body is assembled to the multistage, can realize the regulation of 1 actual length of pipe that drills, and then can take a sample to darker soil layer
As an optional scheme, the upper end of the soil sampling pipe 2 is clamped with a top cover plate 8. Through the setting of top apron 8, can avoid upper debris to fall into in soil sampling pipe 2 through drilling pipe 1.
As an optional scheme, 8 upper ends of top apron are provided with spread groove 9, top apron 8 passes through spread groove 9 and is connected with outside steel pipe, outside steel pipe can pass the multistage and assemble the body and extend to drilling pipe 1 upper end and contradict with the brill pressure end of outside hydraulic pressure machines.
As an optional scheme, the drilling pipe 1 is a high-strength corrosion-resistant stainless steel pipe with the diameter of 60-100mm, and the opening of the blade foot 4 is 45-85 mm.
As an alternative scheme, the soil sampling pipe 2 is a PVC pipe with the inner wall coated with polytetrafluoroethylene.
As an alternative, the soil protection bag 3 is made of high-strength polyethylene material, the friction coefficient between the soil protection bag 3 and the inner wall of the soil sampling pipe 2 is less than 0.05, the puncture resistance of the soil protection bag 3 is greater than 5N, and the thickness of the soil protection bag is less than 1 mm.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A non-compression soil sampling device for soil pollution condition investigation is characterized by comprising a drilling pipe (1), a soil sampling pipe (2) and a soil protection bag (3); the upper end of the drilling pipe (1) is connected with a drilling and pressing end of an external hydraulic machine, a cutting edge (4) is arranged at the lower end of the drilling pipe (1), and an opening of the cutting edge (4) is smaller than the inner diameter of the soil sampling pipe (2); the soil sampling pipe (2) is coaxially arranged in the drilling pipe (1) and the lower end of the soil sampling pipe extends to the blade foot (4); the soil sampling pipe is characterized in that an annular bagging groove (5) is formed in the inner wall of the lower portion of the soil sampling pipe (2), soil protection bags (3) with downward openings are stacked in the bagging groove (5), and the soil protection bags (3) can gradually extend out and move towards the upper portion of the soil sampling pipe (2) along with soil feeding drilling of the drilling pipe (1).
2. The non-compression soil sampling device for soil pollution condition investigation according to claim 1, wherein the inner wall of the soil sampling pipe (2) at the lower end of the bagging groove (5) is provided with a non-return clamp (6) which can be smoothly folded upwards.
3. The non-compression soil sampling device for soil pollution condition investigation according to claim 2, characterized in that the drilling pipe (1) above the blade foot (4) is a split type multi-section assembled pipe body, and adjacent assembled pipe bodies are connected through a thread (7).
4. The non-compression soil sampling device for soil pollution condition investigation of claim 1, wherein the upper end of the soil sampling pipe (2) is clamped with a top cover plate (8).
5. The non-compression soil sampling device for soil pollution condition investigation according to claim 4, wherein the top cover plate (8) is provided with a connecting groove (9) at the upper end, the top cover plate (8) is connected with an external steel pipe through the connecting groove (9), and the external steel pipe can penetrate through the multi-section assembled pipe body and extend to the upper end of the drilling pipe (1) to be abutted against the drilling pressure end of an external hydraulic machine.
6. The non-compression soil sampling device for the soil pollution condition investigation according to claim 1, wherein the drilling pipe (1) is a high-strength corrosion-resistant stainless steel pipe with the diameter of 60-100mm, and the opening of the blade foot (4) is 45-85 mm.
7. The non-compression soil sampling device for soil pollution condition investigation of claim 1, wherein the soil sampling pipe (2) is a PVC pipe coated with polytetrafluoroethylene on the inner wall.
8. The non-compression soil sampling device for soil pollution condition investigation according to claim 1, wherein the soil protection bag (3) is made of high strength polyethylene material and has a friction coefficient with the inner wall of the soil sampling pipe (2) of less than 0.05, and the soil protection bag (3) has a puncture resistance of more than 5N and a thickness of less than 1 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110882741.7A CN113640045A (en) | 2021-08-02 | 2021-08-02 | Non-compression soil sampling device for soil pollution condition investigation |
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| CN202110882741.7A CN113640045A (en) | 2021-08-02 | 2021-08-02 | Non-compression soil sampling device for soil pollution condition investigation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323752A (en) * | 2021-12-17 | 2022-04-12 | 中国长江三峡集团有限公司 | Soil sampling device and sampling method for collecting full-shading sample of fine particle accumulation layer |
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2021
- 2021-08-02 CN CN202110882741.7A patent/CN113640045A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114323752A (en) * | 2021-12-17 | 2022-04-12 | 中国长江三峡集团有限公司 | Soil sampling device and sampling method for collecting full-shading sample of fine particle accumulation layer |
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Inventor after: Xiang Jiajia Inventor after: Yin Yao Inventor after: Sun Rui Inventor after: Huang Cheng Inventor after: Jiang Wenchao Inventor before: Xiang Jiajia Inventor before: Yin Yao Inventor before: Sun Rui Inventor before: Huang Cheng Inventor before: Jiang Wenchao |