CN113720636A - Portable pit-exploring thin-wall soil sampling device and method - Google Patents
Portable pit-exploring thin-wall soil sampling device and method Download PDFInfo
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- CN113720636A CN113720636A CN202110967127.0A CN202110967127A CN113720636A CN 113720636 A CN113720636 A CN 113720636A CN 202110967127 A CN202110967127 A CN 202110967127A CN 113720636 A CN113720636 A CN 113720636A
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- soil
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- 238000005527 soil sampling Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002689 soil Substances 0.000 claims abstract description 70
- 238000005070 sampling Methods 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 241000209128 Bambusa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction 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 a portable pit detection thin-wall soil sampling device and method, which are mainly suitable for obtaining an undisturbed sample of fine-grained soil in a field pit detection. The soil sampling device and the method comprise a handle, a hollow dowel bar, a sample cylinder cap, a sampling cylinder and a soil cutting ring cutter, wherein the sampling cylinder consists of a first half cylinder and a second half cylinder, and an assembly plane between the two half cylinders is in half-closed connection of a tongue-and-groove structure. The main parts of the device can be disassembled, and the device is connected by using threads, so that the device is simple to assemble and convenient to carry, and the working efficiency is improved; the two half cylinders are assembled through the tongue-and-groove structure, so that the sampling is convenient to disassemble after an original soil sample is obtained, the method is different from the traditional piston pushing or rotating pushing sample-removing mode, the secondary disturbance to the soil sample is reduced, and the accuracy of soil body parameters obtained in later indoor tests is ensured.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering investigation, and particularly relates to a portable pit-exploring thin-wall soil-taking device and method.
Background
The acquisition of an undisturbed sample of a soil body is essential work in a pit exploration process and is basic work for acquiring the physical and mechanical characteristics of the rock and soil and quantitatively evaluating the conditions of the rock and soil engineering. Whether the original state of the soil sample directly influences the accuracy of the soil body parameters can be ensured.
At present, in the using process of various field undisturbed soil sampling devices commonly used, the sampling mode mainly comprises a direct pushing type and a rotary pushing type. No matter be straight pushing-type or rotatory bulldoze formula, when getting soil from the sampling pipe after soil sample collection is accomplished, all push out the soil body through the mode that external force promoted, this process causes the extrusion to the soil body easily, especially the relatively soft soil body can cause the destruction to soil body original state structure. In addition, the conventional undisturbed soil sampling device is of an integrated structure, and is large in size and inconvenient to carry.
To sum up, current original state soil device of fetching earth has and is difficult to ensure the defect that the original state structure of the soil sample of fetching earth and carry inconvenience, urgently needs an improve equipment to take a sample, remedies the not enough of traditional device of fetching earth, and it facilitates to sample for the original state soil body.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a portable pit-exploring thin-wall soil sampling device and a method, which are convenient to disassemble, simple to assemble and convenient to carry and can ensure the undisturbed characteristic of a soil sample.
According to the first aspect of the invention, the following technical scheme is adopted:
the utility model provides a portable exploration pit thin wall device of fetching earth which characterized in that: comprises a handle, a hollow dowel bar, a sample cylinder cap, a sampling cylinder and a soil cutting ring cutter; wherein the handle, the hollow dowel bar, the sample cylinder cap, the sampling cylinder and the soil cutting ring are sequentially connected by threads; the sampling cylinder consists of a first half cylinder and a second half cylinder, and the assembly planes between the first half cylinder and the second half cylinder are detachably connected in a half-closed mode of a tongue-and-groove structure; the lower extreme and the inside intercommunication of sampler barrel of cavity dowel steel, the cavity dowel steel sets up the gas vent that can seal and open.
On the basis of the technical scheme, the invention can also adopt the following further technical schemes or combine the further technical schemes for use:
the handle is provided with a threaded connecting through hole and is in threaded connection with the upper part of the hollow dowel bar through the threaded connecting through hole, and the upper end of the hollow dowel bar is provided with an exhaust port; the handle is fixed with a rubber plug for sealing the air outlet at the upper part of the hollow dowel bar, and can control whether the hollow dowel bar exhausts or not.
The sampling section of thick bamboo comprises two semicylindrical section of thick bamboos, by tongue and groove structure lock between the half section of thick bamboo of first half and the second.
The lower end of the soil cutting ring cutter is provided with an annular cutter head cutting edge; the cutting edge of the annular tool bit is a single inclined edge, the conical inclined plane of the cutting edge faces the outer side, and the inner side of the cutting edge of the annular tool bit is a cylindrical surface with the diameter consistent with that of the inner wall of the sampling tube.
According to the second aspect of the invention, the following technical scheme is adopted:
the thin-wall soil sampling method by utilizing the portable pit-exploring thin-wall soil sampling device is characterized by comprising the following steps of: selecting a sampling area in the pit, and removing soil above a sampling soil layer; removing a soil sample by using the assembled portable pit-exploring thin-wall soil sampling device, pressing the portable pit-exploring thin-wall soil sampling device into a soil layer to be sampled by using a handle until the whole sampling cylinder is filled with the soil sample, and opening an exhaust port in the process to ensure the exhaust function; when the exhaust is closed, the portable pit detection thin-wall soil sampling device is taken out of the soil layer; through the reverse rotation screw thread, lift the sampling tube off, open the sampling tube, take out the soil sample, make the soil sample not receive the disturbance, can guarantee the former appearance of soil sample to the at utmost.
The thin-wall soil sampling device and method convenient to assemble have the beneficial effects that:
1. is convenient to carry. The main components of the soil sampler are connected or inserted by screw threads, so that the soil sampler is convenient to disassemble, and the inconvenience of integrally carrying the whole large-volume soil sampler is avoided.
2. The disturbance to the soil sample is small, and the undisturbed characteristic of the soil sample is guaranteed. The sampling cylinder is connected in a half-closed mode of a mortise structure, the inner wall of the sampling cylinder is a cylindrical surface which is smooth as a whole, extrusion damage caused by the pushing action of external force is avoided in the sample removing process, and the original structural characteristics of the soil sample are guaranteed.
Drawings
FIG. 1 is a schematic view in full section of the present invention;
FIG. 2 is a cross-sectional view of a soil sampling site of the present invention;
FIG. 3 is a cross-sectional view of a sample barrel cap of the present invention;
FIG. 4 is an exploded view of the construction of the coupon of the present invention;
FIG. 5 is a cross-sectional view of a sampling tube of the present invention;
fig. 6 is a sectional view a-a in fig. 5.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
The invention provides a specific embodiment of a portable pit detection thin-wall soil sampling device as shown in figures 1-6, which comprises a handle 1, a hollow dowel bar 2, a sample cylinder cap 3, a sampling cylinder 4 and a soil cutting ring cutter 5, wherein the sampling cylinder is composed of a first half cylinder 41 and a second half cylinder 42, and an assembly plane between the two half cylinders is in half-closed connection of a tongue-and-groove structure. The handle 1 is in threaded connection with the hollow dowel bar 2, the hollow dowel bar 2 is in central threaded connection with the sample cylinder cap 3, the sample cylinder cap 3 is provided with the cap cylinder section 31, the lower end of the cap cylinder section is in threaded connection with the upper end of the sampling cylinder 4 which is integrally connected with the mortise, and the lower end of the sampling cylinder 4 which is integrally connected with the mortise is in threaded connection with the upper end connecting part of the soil cutting ring cutter 5.
Specifically, the handle 1 is provided with a threaded connection through hole 11, the threaded connection through hole 11 is in threaded connection with the upper part of the hollow dowel bar 2, and the upper end of the hollow dowel bar 2 is provided with an exhaust port 20; anti-skid handles 11 are arranged on two sides of the handle 1, and anti-skid lines are arranged on the anti-skid handles 11 and used for increasing the friction force of hands; the handle 1 is fixed with a rubber plug 12 for sealing the air outlet at the upper part of the hollow dowel bar, and can control whether the hollow dowel bar 2 exhausts or not.
Specifically, cavity dowel bar 2 upper end is equipped with external screw thread 21, links to each other with handle 1, and the lower extreme is equipped with external screw thread 22, and the crown of a hat of appearance section of thick bamboo cap sets up central screw hole 30, and external screw thread 22 links to each other with central screw hole 30, and cavity dowel bar 2 is the cavity design, and its lower extreme is the air inlet to with the inner chamber switch-on of sampling tube 4, can exhaust at the firming appearance in-process. The upper part of the sampling tube 4 is connected with the cap tube section 31 of the sample tube cap 3 through external threads, and the lower part of the sampling tube is connected with the soil cutting ring 5 through external threads to form a smooth inner wall 40 for wrapping the soil sample.
Specifically, the sampling tube 4 is formed by connecting a first half tube 41 and a second half tube 42 through a tongue-and-groove structure; one side of the first half cylinder 41 along the axial direction is provided with three tenons 43, the other side is provided with three grooves 44, one side of the second half cylinder 41 along the axial direction is provided with three grooves 44, the other side is provided with three tenons 43, the tenons of the first half cylinder 41 are matched with the grooves of the second half cylinder 42, and the tenons of the second half cylinder 42 are matched with the grooves of the second half cylinder 41. After the assembly, the structure is firm and not easy to loosen. The upper ends and the lower ends of the first half cylinder 41 and the second half cylinder 42 are provided with external threads, and after the sampling cylinder 4 is connected into a whole, the external threads of the two half cylinders 41 and 42 are connected with continuous external threads.
The upper end of the soil cutting ring cutter 5 is provided with an internal thread and is connected with the external thread of the lower end of the sampling tube 4 which is connected into a whole, and the lower end of the soil cutting ring cutter 5 is provided with an annular cutter head cutting edge 51. The cutting edge 51 of the annular cutter head is a single inclined edge, the conical inclined plane 511 of the cutting edge faces the outer side, and the inner side of the cutting edge 51 of the annular cutter head is a cylindrical surface 512 which has the same diameter with the inner wall of the sampling tube 4, so that when soil is sampled, soil outside the soil is extruded to obtain a soil sample, and the influence of external force on the soil sample is reduced.
The invention provides a pit detection thin-wall soil sampling method by utilizing the portable pit detection thin-wall soil sampling device, which comprises the following specific steps: selecting a sampling area in the pit, and removing soil above a sampling soil layer; the portable pit-exploring thin-wall soil sampling device is pressed into a soil layer to be sampled by using the handle until a soil sample is filled in the whole sampling cylinder, and in the process, the rubber plug is in a pulled-out state, so that the exhaust function is guaranteed; the portable pit-exploring thin-wall soil sampling device is taken out of a soil layer, and in the process, the rubber plug is in an inserted state, so that the air-tight function is guaranteed, and the sample is guaranteed not to fall off due to negative-pressure flexible adsorption; and (3) dismounting the sampling cylinder, dismounting the soil cutting ring, opening the sampling cylinder, and taking out the soil sample, so that the soil sample is not disturbed, and the original soil sample can be ensured to the maximum extent.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (5)
1. The utility model provides a portable exploration pit thin wall device of fetching earth which characterized in that: comprises a handle (1), a hollow dowel bar (2), a sample cylinder cap (3), a sampling cylinder (4) and a soil cutting ring cutter (5); wherein the handle (1), the hollow dowel bar (2), the sample cylinder cap (3), the sampling cylinder (4) and the soil cutting ring cutter (5) are connected in sequence by using threads; the sampling tube is composed of a first half tube (41) and a second half tube (42), and the assembly planes between the first half tube (41) and the second half tube (42) are detachably connected in a half-closed mode of a tongue-and-groove structure; the lower extreme and the inside intercommunication of sampling tube (4) of cavity dowel steel (2), cavity dowel steel (2) set up exhaust port (20) that can seal and open.
2. The portable pit-exploring thin-wall soil sampling device according to claim 1, characterized in that: the handle (1) is provided with a threaded connecting through hole (11), the handle is in threaded connection with the upper part of the hollow dowel bar (2) through the threaded connecting through hole (11), and the upper end of the hollow dowel bar (2) is provided with an exhaust port (21); a rubber plug (12) for sealing the air outlet at the upper part of the hollow dowel bar is fixed on the handle (1) and can control whether the hollow dowel bar (2) exhausts or not.
3. The portable pit-exploring thin-wall soil sampling device according to claim 1, characterized in that: the sampling tube (4) is composed of two semi-cylindrical tubes (41) and (42), and the first semi-cylindrical tube (41) and the second semi-cylindrical tube (42) are buckled by a tongue-and-groove structure.
4. The portable pit-exploring thin-wall soil sampling device according to claim 1, characterized in that: the lower end of the soil cutting ring cutter (5) is provided with an annular cutter head cutting edge (51); the cutting edge (51) of the annular tool bit is a single inclined edge, the conical inclined plane (511) of the cutting edge faces the outer side, and the inner side of the cutting edge (51) of the annular tool bit is a cylindrical surface (512) with the diameter consistent with that of the inner wall of the sampling cylinder (4).
5. The thin-wall soil sampling method by using the portable pit-exploring thin-wall soil sampling device of any one of claims 1 to 4 is characterized in that: selecting a sampling area in the pit, and removing soil above a sampling soil layer; removing a soil sample by using the assembled portable pit detection thin-wall soil sampling device of any one of claims 1-4, pressing the portable pit detection thin-wall soil sampling device into a soil layer to be sampled by using a handle until the soil sample fills the whole sampling cylinder, and opening an exhaust port in the process to ensure the exhaust function; when the exhaust is closed, the portable pit detection thin-wall soil sampling device is taken out of the soil layer; through the reverse rotation screw thread, lift the sampling tube off, open the sampling tube, take out the soil sample, make the soil sample not receive the disturbance, can guarantee the former appearance of soil sample to the at utmost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110967127.0A CN113720636A (en) | 2021-08-23 | 2021-08-23 | Portable pit-exploring thin-wall soil sampling device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110967127.0A CN113720636A (en) | 2021-08-23 | 2021-08-23 | Portable pit-exploring thin-wall soil sampling device and method |
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| CN113720636A true CN113720636A (en) | 2021-11-30 |
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| CN202110967127.0A Pending CN113720636A (en) | 2021-08-23 | 2021-08-23 | Portable pit-exploring thin-wall soil sampling device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720182A (en) * | 2022-03-09 | 2022-07-08 | 山东电力工程咨询院有限公司 | Soil sampler and soil sampling method |
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| CN212432592U (en) * | 2020-06-10 | 2021-01-29 | 江苏文博建筑设计有限公司 | A portable soil sampling device for normal position test |
| CN216771099U (en) * | 2021-08-23 | 2022-06-17 | 浙江华东建设工程有限公司 | Portable pit-exploring thin-wall soil sampling device |
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2021
- 2021-08-23 CN CN202110967127.0A patent/CN113720636A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954059A (en) * | 2016-06-01 | 2016-09-21 | 青岛农业大学 | Convenient undisturbed soil taking device |
| CN206321446U (en) * | 2016-11-22 | 2017-07-11 | 中国有色金属工业昆明勘察设计研究院 | A kind of improved beam section formula cutting ring soil sampler |
| JP2018084049A (en) * | 2016-11-22 | 2018-05-31 | 鉱研工業株式会社 | Sampling method and sampling device |
| CN110243632A (en) * | 2019-07-10 | 2019-09-17 | 天津市水利勘测设计院 | A kind of portable hydraulic engineering geological mapping bottom weak soil dispensing device |
| CN111220407A (en) * | 2020-03-30 | 2020-06-02 | 昆明理工大学 | Continuous undisturbed sample geotome of well shallow layer cutting ring |
| CN212432592U (en) * | 2020-06-10 | 2021-01-29 | 江苏文博建筑设计有限公司 | A portable soil sampling device for normal position test |
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| CN216771099U (en) * | 2021-08-23 | 2022-06-17 | 浙江华东建设工程有限公司 | Portable pit-exploring thin-wall soil sampling device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720182A (en) * | 2022-03-09 | 2022-07-08 | 山东电力工程咨询院有限公司 | Soil sampler and soil sampling method |
| CN114720182B (en) * | 2022-03-09 | 2024-03-19 | 山东电力工程咨询院有限公司 | Soil sampler and soil sampling method |
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