CN107796647B - Soil sampler and sampling method thereof - Google Patents
Soil sampler and sampling method thereof Download PDFInfo
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- CN107796647B CN107796647B CN201710962277.6A CN201710962277A CN107796647B CN 107796647 B CN107796647 B CN 107796647B CN 201710962277 A CN201710962277 A CN 201710962277A CN 107796647 B CN107796647 B CN 107796647B
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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
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a soil sampler and a sampling method thereof, wherein the soil sampler comprises an outer tube with a sludge discharge hole and a rubber plug at the top end, a plurality of flaps connected to the lower end of the outer tube by hinges, an inner tube with a plurality of openings matched with the flaps at the lower end, a sludge discharge hole positioned at the upper end of the inner tube, and a sampling tube. During sampling, the relative positions of the outer pipe and the inner pipe are fixed firstly to enable the petals to be in an open state, the position of the inner pipe is fixed after the soil sampler is inserted into a target soil layer, the outer pipe is moved downwards until the petals are closed, the drain hole of the inner pipe is sealed, the relative positions of the outer pipe and the inner pipe are fixed again, the soil sampler is pulled out, and a soil sample is taken out. The invention can avoid the disturbance of the soil sample caused by the sealing adsorption principle of the traditional soil sampler, greatly improves the sampling success rate of soil bodies with low water content and low viscosity, such as silt, and the like, and ensures the original state of the soil sample.
Description
Technical Field
The invention belongs to the field of engineering geological exploration, particularly relates to a soil sampler and a using method thereof, and particularly relates to application of the soil sampler in undisturbed soil sampling work.
Technical Field
The sampling by using the soil sampler is a basic work in geotechnical engineering investigation, and particularly in undisturbed soil sampling work, the quality of sampling directly influences engineering geological evaluation and geotechnical engineering design and construction. The soil sampler commonly used at present comprises an open thick-wall soil sampler, a thin-wall soil sampler, a free piston soil sampler and the like.
The principle of the existing soil sampler is that a ball valve or a piston is used for sealing a soil sampling pipe to form a sealed adsorption device so as to take out a soil sample. However, when the soil sample is lifted upwards, the adsorption force of the seal can disturb the soil sample, and the soil body with low water content and low viscosity, such as silt, is difficult to form a seal, so that the sampling effect is not ideal.
Disclosure of Invention
The invention aims to solve the technical problems that the sealing adsorption force of the existing soil sampler can disturb soil samples, soil bodies with low water content and low viscosity such as silt are difficult to seal, the sampling effect is not ideal and the like.
In order to solve the technical problem, the invention adopts the technical scheme that the soil sampler comprises an outer pipe, a plurality of flaps, an inner pipe, a soil discharge hole and a sampling pipe, wherein the top end of the outer pipe is provided with the soil discharge hole and a rubber ball, the flaps are connected to the lower end of the outer pipe through hinges, the lower end of the inner pipe is provided with a plurality of holes matched with the flaps, and the soil discharge hole and the sampling pipe are positioned at the upper end of the inner pipe.
Outer tube outside of tubes including the tight cover of outer tube, can move about from top to bottom, trompil and lamella are supporting, and the lamella inserts the inner tube through the trompil slant to the inside, when the lamella is in the open mode, the lamella can be placed in the trompil and does not influence the inner tube inner wall smoothness, and the trompil lower extreme can provide the fulcrum when outer tube downward movement makes the lamella closed, 2 ~ 6 pieces can be got to lamella quantity, inner tube upper portion has a plurality of screws, can unscrew the screw and open the inner tube in order to place or take out the sampling tube, and the inner tube lower extreme has the sword foot, the mud hole counterpoint of rubber buffer and inner tube upper end, when outer tube downward movement makes the lamella closed, the rubber buffer just seals the mud hole of inner tube upper end, the sampling tube can closely place in the inner tube, and the sampling tube internal diameter is the same with the inner tube internal diameter, the outer tube has connect the annular to connect pole, and controllable outer tube activity from top.
A sampling method of a soil sampler comprises the following steps:
s1, coating vaseline on the inner wall of the sampling tube, putting the sampling tube into the inner tube, and fixing the inner tube by using a screw;
s2, sleeving an outer pipe outside the inner pipe, and fixing the relative positions of the inner pipe and the outer pipe to enable the flaps to be placed in the open holes and to be in an open state;
s3, pressing the soil sampler into the soil layer according to the standard requirement to enable the target soil layer to enter the sampling pipe;
s4, fixing the position of the inner pipe, slowly moving the outer pipe downwards until the flaps are closed, sealing the drain hole of the inner pipe, and fixing the relative position of the inner pipe and the outer pipe;
s5, taking out the soil sampler upwards, transversely placing the soil sampler, pulling out the outer pipe, loosening the screw of the inner pipe, taking out the sampling pipe and the soil sample in the pipe, sealing and labeling;
and S6, cleaning the soil sampler.
The invention has the beneficial effects that: compared with the prior art, the soil sampler provided by the invention has the advantages that the upper end is provided with the drainage and sealing device, the lower end is provided with the closable flap, the soil sampler is adopted for sampling, the disturbance of a soil sample caused by the sealing adsorption principle of the traditional soil sampler can be avoided, the sampling success rate of soil bodies such as silt and the like with low water content and low viscosity is greatly improved by using the soil sampler and the sampling method thereof, and the original state of the soil sample is ensured.
In a word, the soil sampler of the invention consists of an inner pipe 2 and an outer pipe 1, the upper end of the soil sampler is provided with a drainage and sealing device, the lower end of the soil sampler is provided with a closable flap 3, and the corresponding sampling method can avoid soil sample disturbance caused by the sealing adsorption principle of the traditional soil sampler, greatly improve the sampling success rate of soil bodies with low water content and low viscosity such as silt and the like, and ensure the original state of the soil sample.
Drawings
FIG. 1 is a schematic longitudinal sectional view of the soil sampler of the present invention;
FIG. 2 is a schematic isometric view of the geotome of the present invention;
figure 3 is a schematic cross-sectional view of the closure of the geotome flaps of the present invention.
The reference numerals are 1-outer tube, 2-inner tube, 3-flap, 4-sampling tube, 5-opening, 6-rubber plug, 7-mud drainage hole, 8-mud drainage hole, 9-hinge and 10-screw.
Detailed Description
The invention will be further described with reference to the accompanying drawings
As shown in fig. 1 to 3, the soil sampler of the present invention comprises an outer tube 1 with a cutting edge at the lower part, an inner tube 2 sleeved in the outer tube 1, a flap 3 capable of being closed and connected to the lower end of the outer tube 1, an opening 5 matched with the lower end of the inner tube 2 and the flap 3, a sampling tube 4 tightly sleeved in the inner tube 2, a sludge discharge hole 8 at the top end of the outer tube 1, and a sludge discharge hole 7 aligned with a rubber stopper 6 at the top end of the inner tube 2. The outer tube 1 and the inner tube 2 can move relatively, and the flaps 3 can be closed when the outer tube 1 moves downwards.
Further, flap 3 couples to outer tube 1 lower extreme with hinge 9, and flap 3 quantity can be 2 ~ 6 pieces, trompil 5 and flap 3 need be supporting, and flap 3 inserts inner tube 2 through trompil 5 slant inwards, and when flap 3 was in the open mode, flap 3 can be placed in trompil 5 and do not influence inner tube 2 inner wall smooth, and trompil 5 lower extreme can provide the fulcrum and make flap 3 closed when outer tube 1 moved down, so flap 3 need have certain radian and rigidity open 5 upper portion need slant in can with flap 3 laminating, open 5 lower part need have certain radian in order to form the fulcrum and make flap 3 closed.
Further, on the premise of relative movement, the inner tube 2 and the outer tube 1 need to be tightly attached, so that the flaps 3 cannot be loosened when closed. In order to facilitate the placement and removal of the sampling tube 4 and the soil sample, the upper portion of the inner tube 2 needs to be openable, so that the upper portion of the inner tube 2 is provided with a plurality of screws 10, and the inner tube 2 can be opened when the screws are unscrewed. The sampling tube 4 needs to be tightly placed inside the inner tube 2, and the outer diameter of the sampling tube 4 is the same as the inner diameter of the inner tube 2, so that the inner tube is smooth and disturbance is reduced.
Furthermore, in order to discharge the muddy water in the pipe when the muddy water penetrates downwards, the top ends of the inner pipe 2 and the outer pipe 1 are provided with muddy water discharge holes 7 and 8. However, since the rubber stopper 6 is provided in the inner tube 2 in alignment with the sludge discharge holes 7 to seal the inner tube, the positions of the sludge discharge holes 7 and 8 of the outer tube 1 and the inner tube 2 need to be shifted. The positions of the mud discharging holes 7 of the rubber match 6 and the inner tube 2 need to be strictly aligned, and when the outer tube 1 moves downwards to close the flap 3, the rubber plug 6 just seals the mud discharging holes 7 at the upper end of the inner tube 2 to form sealing. The number of the drainage holes and the rubber plugs can be increased as necessary to increase the muddy water drainage speed.
Furthermore, the upper end of the outer pipe 1 is connected with an annular connecting rod which can control the outer pipe to move up and down, the upper end of the inner pipe 2 is connected with a circular connecting rod which can control the inner pipe to move up and down, and the circular connecting rod is placed in the annular connecting rod. In order to fix the positions of the inner pipe and the outer pipe conveniently, a device similar to a buckle can be arranged at the upper part of the extension rod during implementation.
The diameter of the soil sampler can be different from 70mm ~ 200mm according to the requirement, the wall thickness of the inner pipe is preferably 0.6mm ~ 2mm, the wall thickness of the outer pipe is preferably 0.6mm ~ 2mm, the length of the soil sampler can be freely changed according to the requirement, and the sizes of corresponding parts such as the petals and the like can be correspondingly adjusted.
The sampling steps of the soil sampler are as follows:
s1, putting the inner wall of the sampling tube 4 into the inner tube 2 after coating Vaseline, fixing the inner tube 2 by the screw 10, and replacing the Vaseline by other similar lubricants so as to reduce the disturbance of the soil sample caused by the friction of the tube wall.
S2, the outer tube 1 is sleeved outside the inner tube 2, and the relative positions of the inner tube and the outer tube are fixed, so that the flaps 3 are placed in the open holes 5 and are in an open state. In order to fix the positions of the inner pipe and the outer pipe, a bayonet can be arranged at the upper end of the extension rod, so that the petals 3 can not enter the pipe to disturb soil samples in the process of penetrating the soil sampler.
And S3, connecting the soil sampler with drilling equipment, and pressing the soil sampler into a soil layer according to the standard requirement to enable the target soil layer to enter the sampling tube 4.
S4, fixing the position of the inner tube 2 unchanged, slowly moving the outer tube 1 downwards until the flaps 3 are closed, and sealing the mud discharge holes 7 of the inner tube 2, so that the soil sample is closed in the soil sampler tube, and fixing the relative position of the inner tube and the outer tube again. A bayonet can be arranged at the upper end of the extension rod to ensure that the flap 3 is closed and is not loosened and the mud drainage hole 7 is sealed tightly.
S5, taking out the soil sampler upwards, taking the soil sampler off the drilling equipment, transversely placing, pulling out the outer pipe 1, loosening the inner pipe screw 10 to open the inner pipe 2, taking out the sampling pipe 4 and the soil sample in the pipe, sealing the soil sample according to the specification requirement and sticking a label.
And S6, washing the soil sampler with water.
If the sampling is to be continued, the above steps S1-S6 are repeated.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The soil sampler is characterized by comprising an outer tube (1) with a cutting edge at the lower part, an inner tube (2) sleeved in the outer tube (1) and connected with a flap (3) at the lower end of the outer tube (1) in a closed mode, holes (5) matched with the lower end of the inner tube (2) and the flap (3), a sampling tube (4) tightly sleeved in the inner tube (2), a mud discharge hole (8) at the top end of the outer tube (1), and a mud discharge hole (7) aligned with a rubber plug (6) at the top end of the inner tube (2), wherein the outer tube (1) and the inner tube (2) move relatively, and when the outer tube (1) moves downwards, the flap (3) can be closed; trompil (5) and lamella (3) are supporting, and inner tube (2) are inserted in lamella (3) process trompil (5) slant, and when lamella (3) were in the open mode, lamella (3) were placed in trompil (5) and are not influenced inner tube (2) inner wall and smooth, and trompil (5) lower extreme made lamella (3) closed through the fulcrum when outer tube (1) moves down.
2. The geotome of claim 1 wherein the flaps (3) are steel sheets having a set curvature, and are coupled to the lower end of the outer tube (1) with hinges (9), and the number of flaps (3) is 2 ~ 6.
3. The geotome of claim 1 wherein the upper portion of the opening (5) is inwardly inclined to engage the flaps (3) and the lower portion of the opening (5) has a curvature to form a fulcrum to close the flaps (3).
4. The sampler according to claim 1, wherein the inner tube (2) has a plurality of screws (10) at its upper portion, and when the screws (10) are unscrewed, the inner tube (2) is opened at its upper portion to place or remove the sampling tube (4).
5. The geotome of claim 1 wherein the inner tube (2) and the outer tube (1) are closely fitted, and the sampling tube (4) is closely placed inside the inner tube (2).
6. The soil sampler according to claim 1, wherein the rubber plug (6) is aligned with the sludge discharge hole (7) at the upper end of the inner tube (2), and when the outer tube (1) moves downwards to close the flap (3), the rubber plug (6) just closes the sludge discharge hole (7) at the upper end of the inner tube (2).
7. The soil sampler according to claim 1, characterized in that the outer pipe (1) is connected with a ring-shaped connecting rod, the outer pipe (1) is controlled to move up and down, the inner pipe (2) is connected with a round connecting rod, the inner pipe (2) is controlled to move up and down, the round connecting rod is placed in the ring-shaped connecting rod, and the upper part of the connecting rod is provided with a buckling device.
8. The geotome of claim 1 wherein the geotome has a diameter of 70mm to 200mm, preferably an inner tube wall thickness of 0.6mm ~ 2mm and an outer tube wall thickness of 0.6mm ~ 2 mm.
9. A method of sampling using the geotome of any one of claims 1 to 7, wherein the method comprises the steps of:
s1, smearing lubricant on the inner wall of the sampling tube (4), putting the sampling tube into the inner tube (2), and fixing the inner tube (2) by a screw (10);
s2, sleeving the outer pipe (1) outside the inner pipe (2), and fixing the relative positions of the inner pipe and the outer pipe to enable the flaps (3) to be placed in the openings (5) and to be in an open state;
s3, pressing the soil sampler into the soil layer according to the standard requirement to enable the target soil layer to enter the sampling tube (4);
s4, fixing the position of the inner pipe (2), moving the outer pipe (1) downwards until the flaps (3) are closed, and sealing the mud discharge holes (7) of the inner pipe (2) at the moment, so that a soil sample is closed in the soil sampler pipe, and fixing the relative positions of the inner pipe and the outer pipe;
s5, taking out the soil sampler upwards, transversely placing the soil sampler, pulling out the outer pipe (1), loosening the inner pipe screw (10), opening the inner pipe (2), taking out the sampling pipe (4) and the soil sample in the pipe, sealing and sticking a label;
and S6, cleaning the soil sampler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710962277.6A CN107796647B (en) | 2017-10-17 | 2017-10-17 | Soil sampler and sampling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710962277.6A CN107796647B (en) | 2017-10-17 | 2017-10-17 | Soil sampler and sampling method thereof |
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| Publication Number | Publication Date |
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| CN107796647A CN107796647A (en) | 2018-03-13 |
| CN107796647B true CN107796647B (en) | 2019-12-31 |
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| CN108918176A (en) * | 2018-09-20 | 2018-11-30 | 吴江伟 | A kind of sewage detection sludge sampler |
| CN109238772B (en) * | 2018-11-23 | 2023-11-14 | 中船勘察设计研究院有限公司 | Wedge type core-retaining device and soil sampler |
| CN109916655B (en) * | 2019-04-18 | 2021-09-17 | 海检检测有限公司 | Carrying type deep sea sediment sampler of underwater vehicle |
| CN110348862B (en) * | 2019-06-24 | 2024-04-30 | 余军 | Method for guaranteeing crop planting environment pollution-free and tracing agricultural products |
| CN110376011B (en) * | 2019-08-22 | 2021-08-13 | 吉林大学 | Diving soil layer sampler |
| CN111366406A (en) * | 2020-04-28 | 2020-07-03 | 吉林大学 | Sampling device and sampling method for undisturbed sample of residual granite soil |
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| CN111795857A (en) * | 2020-08-12 | 2020-10-20 | 自然资源部第一海洋研究所 | Columnar sampler for submarine sediment and application of columnar sampler in-situ measurement system |
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| CN111911088B (en) * | 2020-08-31 | 2021-09-14 | 中国科学院空间应用工程与技术中心 | Lunar soil deep layer sampling drill rod with sample locking function |
| CN113405836B (en) * | 2021-05-21 | 2023-04-07 | 上海化工院环境工程有限公司 | Sleeve driving closed tooth type fixed range sampler |
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| SU1504545A1 (en) * | 1987-12-04 | 1989-08-30 | Украинский Государственный Институт По Проектированию Металлургических Заводов | Soil-carrier tool |
| JP2722194B2 (en) * | 1987-12-18 | 1998-03-04 | 中部電力株式会社 | Ground sampler with built-in core catcher forced injection device |
| CN1182380C (en) * | 2002-11-28 | 2004-12-29 | 浙江大学 | Mechanical hand hold type deposit sediment sampler without boundary disturbance |
| CN100592062C (en) * | 2007-10-09 | 2010-02-24 | 水利部交通部电力工业部南京水利科学研究院 | Water pressure type thin-wall sampler used for soft soil |
| CN201687079U (en) * | 2010-03-25 | 2010-12-29 | 黑旋风工程机械开发有限公司 | Sludge vibration grab bucket |
| CN101886987B (en) * | 2010-06-13 | 2011-11-23 | 吉林大学 | Portable static sediment sampler |
| CN102839643B (en) * | 2012-09-19 | 2014-09-24 | 桂林理工大学 | Method for sampling soil body sample |
| CN103572756B (en) * | 2013-11-13 | 2015-07-29 | 河海大学 | Cast-in-place pile sleeve and construction method thereof |
| CN103954476B (en) * | 2014-05-09 | 2016-09-07 | 河海大学 | The uncovered thin-wall sampler of penetration type and sampling method |
| CN106248420B (en) * | 2016-07-11 | 2019-05-24 | 南京铁道职业技术学院 | A kind of two-tube vane locking-type sand extractor |
| CN206246885U (en) * | 2016-12-05 | 2017-06-13 | 龙岩畅丰专用汽车有限公司 | Drainage vehicle extension tube |
| CN106644571B (en) * | 2017-01-23 | 2023-05-23 | 浙江省水利水电勘测设计院有限责任公司 | Double-tube bottom mud sampler |
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