CN202362166U - Model test soil sampler for analyzing microstructure - Google Patents
Model test soil sampler for analyzing microstructure Download PDFInfo
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- CN202362166U CN202362166U CN2011205252443U CN201120525244U CN202362166U CN 202362166 U CN202362166 U CN 202362166U CN 2011205252443 U CN2011205252443 U CN 2011205252443U CN 201120525244 U CN201120525244 U CN 201120525244U CN 202362166 U CN202362166 U CN 202362166U
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- 239000002689 soil Substances 0.000 title claims abstract description 90
- 238000012360 testing method Methods 0.000 title claims abstract description 35
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- 238000004519 manufacturing process Methods 0.000 claims description 4
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- 238000003780 insertion Methods 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract description 4
- 238000005527 soil sampling Methods 0.000 abstract 5
- 238000013461 design Methods 0.000 description 4
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- 238000012545 processing Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
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- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229940099259 vaseline Drugs 0.000 description 2
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- 239000011435 rock Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model relates to a model test soil sampler for analyzing a microstructure. The model test soil sampler comprises tube shoes, a soil sampling tube, a piston, a connection cap, a double-pass joint, a rubber hose, an electric air pump, an electric push rod and an insertion pin, wherein the tube shoes are arranged at the lower end of the soil sampling tube and are single-inclination cutting edges; the piston is arranged in the soil sampling tube and can move up and down; the upper end of the soil sampling tube is in threaded connection with the connection cap; a cylindrical convex block is arranged at the upper end of the connection cap; a cylindrical groove is formed on the convex block; an insertion pin hole is formed on each of two sides of the groove; a through hole is formed at the lower end of the electric push rod, and the electric push rod is connected with the connection cap through the insertion pin; a through hole with an internal thread is formed on one side of the connection cap and communicated with an inner cavity of the soil sampling tube; the through hole is connected with an external thread at one end of the double-pass joint; one end of the rubber hose is sleeved with the double-pass joint; and the other end of the rubber hose is sleeved with an air nozzle of the electric air pump. The utility model has the advantages that the model test soil sampler is easy to process and convenient to test, the quality of the sampled soil is good and the like.
Description
Technical field:
The utility model relate to a kind of based on indoor model test, can fetch earth and be used for the laboratory soil test instrument of Micro-Structure Analysis the soil body in the model casing, promptly be used for the model test soil sample barrel of Micro-Structure Analysis.
Background technology:
Geotechnical model test is the important means that people are familiar with the soil body and soil and structural interaction macroscopic behavior, because actual geotechnical engineering problems is larger, geotechnical model test adopts scaled model usually.The micromechanism of so-called soil generally is meant size, shape, surface characteristics and the quantitative ratio relation thereof of microstructure unit body, also comprises spatially arrangement mode and interaction type thereof between each cell cube.The various physico-mechanical propertieses of soil and micromechanism are formed closely related, and the macroscopic property of understanding soil at first must have deep understanding to the micromechanism of soil.In soil mechanics research, based on the soil body microstructural parameter research of indoor model test, for holding its macroscopical physico-mechanical properties, the constitutive model of the foundation and the verification soil body all has crucial meaning.
Present soil sample barrel both domestic and external is used for engineering geological drilling more; Generally mostly be the uncovered and uncovered soil sample barrel of thin-walled of heavy wall; The performance of this soil sample barrel own just is not very desirable; Adding most engineering drillers does not have and is pressed into and counterforce device and generally adopt the multi-hit method sampling of light hammer, very big to the structural perturbation of gathering soil sample.Even the mode of fetching earth is controlled better, also can only obtain the soil sample of slight disturbance and carry out macroscopical physico-mechanical properties test.At last, the galvanized iron sheet that is loaded in the soil sample barrel avoids occurring squeezing flat, crooked or curling phenomenon unavoidably in the process of fetching earth.Consider that the sample that is used for Micro-Structure Analysis should reduce the disturbance that causes owing to unreasonable structure to greatest extent, the structure of such soil sample barrel and technical parameter can not satisfy the requirement of fetching earth of indoor model test.
With regard to present level, be used for indoor model test, can fetch earth and the sampler that is used for Micro-Structure Analysis is still a weak link to the soil body in the model casing.This aspect research mainly concentrates on the transparent wall that utilizes model casing, claps the cross sectional image of the body that fetches earth and handles and analyze, thereby obtain the fine sight structural parameters of the soil body.This method test operation is comparatively complicated, and the installation of on-the-spot camera and floor light facility is limit by site condition.In addition, the soil body and wall exist friction and wall that soil deformation is had effect of restraint, and the digital picture that sees through the transparent wall picked-up of model casing can not reflect the ambient stress of the inner soil body of model casing truly.For this reason, need a kind of indoor model test that is applicable to of research, can the model tank test soil body not had the small-sized soil sample barrel that disturbance is taken out as far as possible, be used for Micro-Structure Analysis.
The utility model content:
To the soil sample barrel that above-mentioned engineering investigation commonly used adopted and the defective of sampling method, and the limitation of applicable elements, the utility model provides a kind of model test soil sample barrel that is used for Micro-Structure Analysis.
For realizing above-mentioned test objective, the utility model has adopted following technical scheme:
A kind of model test soil sample barrel that is used for Micro-Structure Analysis, this soil sample barrel comprises shoe, the pipe that fetches earth, piston, attachment cap, duplex fitting, rubber hose, electric air pump, electric pushrod and latch; Wherein, shoe is located at the lower end of the pipe that fetches earth, and is the uniclinal declivous cutting edge; Fetch earth the pipe in a piston is set, can move up and down; Fetch earth pipe upper end is connected with screw thread with attachment cap, on the attachment cap cylindrical bump is arranged, and a cylinder shape groove is arranged on the projection, and respectively there is a pin hole groove both sides; The electric pushrod lower end is provided with a through hole, and links to each other with attachment cap through latch; Attachment cap one side be provided with one have an internal thread through hole, the intracavity inter-connection of this through hole and the pipe that fetches earth; Through hole is connected with the external thread of duplex fitting one end, an end of rubber hose and duplex fitting socket, the valve socket of the other end and electric air pump; Shoe is integral manufacturing with the pipe that fetches earth, and shoe, the pipe that fetches earth are the thin-walled pressure parts; The inner wall smooth that fetches earth and manage, internal diameter is identical, and the upper end of external diameter is less than the lower end.
Shoe is the uniclinal declivous cutting edge, has reduced penetration resistance; Shoe, the pipe that fetches earth have reduced to press down the extruding disturbance that in the process soil sample is caused for the thin-walled pressure parts; Shoe, the pipe that fetches earth have higher integral rigidity, can adapt to the big pressure in top and not deform; Smooth in shoe, the pipe that fetches earth, subtracted frictional resistance and to the disturbance of soil sample in the pipe that fetches earth; Fetch earth pipe upper end external diameter less than the lower end external diameter, promptly be provided with a little tapering, guarantee to fetch earth pipe be pressed into withdrawal process in keep a determining deviation with surrounding soil, having reduced contacting and friction of fetch earth pipe outer wall and the soil body, be convenient to carry and soil sample twisted off before native; Fetch earth pipe upper end is connected with screw threads for fastening with attachment cap, keeps airtight; Electric pushrod links to each other with attachment cap through latch, as injection with carry native propulsion system; Gas bleeding in the pipe that fetches earth provided suction upwards when electric air pump was carried on fetching earth, and made soil sample barrel inner chamber formation negative pressuren zone, and piston and soil sample have by the trend of drawing so that fetch earth; Upwards carry in the native process at soil sample barrel, can keep the power of getting sample and fall a kind equilibrium of forces relation, make soil sample difficult drop-off in the soil sample barrel, avoided pull of vacuum to directly act on soil sample simultaneously and caused inhomogeneous disturbance; After soil sample barrel fetched earth and finishes, electric air pump provided outside thrust toward the interior inflation of the pipe that fetches earth, and by piston soil sample is released in the pipe that fetches earth.
A kind of soil basketing method that is used for the model test soil sample barrel of Micro-Structure Analysis, said method comprises the steps:
1), before the test, the sample soil sample is put into model casing, and with the soil sample surface evening;
2), smear a little vaseline at the inside and outside wall of the shoe and the pipe that fetches earth; The shoe cutting edge just in time is affixed on the position soil body surface that fetches earth, and the piston in the pipe that fetches earth drops to the surface of fetching earth automatically because of gravity;
3), with the be connected disconnection of rubber hose with duplex fitting, open electric pushrod then, the lower end of electric pushrod slowly at the uniform velocity descends, and the shoe and the pipe static pressure that fetches earth are gone in the soil sample;
4), the pipe of waiting to fetch earth is pressed into the design degree of depth place that fetches earth, and breaks off electric pushrod and is connected with the latch of attachment cap, the pin hole that then latch is inserted on the attachment cap rotated for 2 weeks, the soil sample that fetches earth in managing and soil sample in the case is twisted off separate;
5), with latch electric pushrod is connected with attachment cap then, and with rubber hose and duplex fitting socket, open electric pushrod and electric air pump then simultaneously, slowly at the uniform velocity rising in the electric pushrod lower end, makes soil sample barrel upwards carry soil; Electric air pump gas bleeding in the pipe that fetches earth simultaneously provides to upper pulling force and prevents to propose the decline generation of native phenomenon of native process; Finally, the pipe that fetches earth is slowly extracted the soil body of electric pushrod in model casing, closes electric air pump;
6), the latch in the middle of electric pushrod and the attachment cap is pulled out; The parts of soil sample barrel except that electric pushrod are placed cut on the earthen platform, open electric air pump inflation in the pipe that fetches earth, under the effect that the pipe internal pressure strengthens, piston is slowly released soil sample in the pipe that fetches earth;
7), with the fret-saw excision soil sample two ends part that is squeezed, and the part that receives the sidewall friction force-disturbance all around can obtain not having disturbed soil appearance; Prepare requirement according to scanning electron microscope example, produce the elongated bar-shaped sample of required observation place of test, be used for carrying out scanning electron microscope analysis, obtain the micromechanism of soil sample.
The utility model can not only adapt to the site condition of indoor model test, can also satisfy the requirement of fetching earth that is used for Micro-Structure Analysis preferably.And this test apparatus is easy to processing, the sampling reliability is high, is easy to get the no disturbed soil appearance that is used for micro-analysis.This utility model softly mould, plastic and mould firmly in the rock earth model test of shape cohesive soil and silty clay, silt and all can adopt.
Description of drawings:
Fig. 1: the soil sample barrel structural representation that designs voluntarily;
Fig. 2: the attachment cap structural representation that designs voluntarily;
Reference numeral: 1-shoe, the 2-pipe that fetches earth, 3-piston, 4-attachment cap, 5-rapid-acting coupling, 6-rubber hose, 7-electric air pump, 8-electric pushrod, 9-latch.
Embodiment:
Below in conjunction with accompanying drawing and specific embodiment, the present invention is done further explain.
A kind of model test soil sample barrel that is used for Micro-Structure Analysis, this soil sample barrel comprise shoe 1, pipe 2, piston 3, attachment cap 4, duplex fitting 5, rubber hose 6, electric air pump 7, electric pushrod 8 and latch 9 fetch earth; Wherein, shoe 1 is located at the lower end of the pipe 2 that fetches earth, and is the uniclinal declivous cutting edge; Fetching earth to manage in 2 is provided with a piston 3, can move up and down; Fetch earth pipe 2 upper ends and attachment cap 4 is connected with screw thread, and there is a cylindrical bump attachment cap 4 upper ends, and a cylinder shape groove is arranged on the projection, and respectively there is a pin hole groove both sides; Electric pushrod 8 lower ends are provided with a through hole, and link to each other with attachment cap 4 through latch 9; Attachment cap 4 one sides be provided with one have an internal thread through hole, the intracavity inter-connection of this through hole and the pipe 2 that fetches earth; Through hole is connected with the external thread of duplex fitting 5 one ends, an end of rubber hose 6 and duplex fitting 5 sockets, the valve socket of the other end and electric air pump 7; Shoe 1 is integral manufacturing with the pipe 2 that fetches earth, and shoe 1, the pipe 2 that fetches earth are the thin-walled pressure parts; Pipe 2 the inner wall smooth that fetches earth, internal diameter is identical, and the upper end of external diameter is less than the lower end.
A kind of model test soil sample barrel that is used for Micro-Structure Analysis, wherein, shoe 1, pipe 2 material therefors that fetch earth are 303 stainless steels, the utilization Technology for Heating Processing, stiffened has higher integral rigidity to HRC50; Pipe 2 the length that fetches earth is 425mm, and internal diameter is 49mm; The pipe 2 upper end external diameters that fetch earth are 53mm, and the lower end external diameter is 55mm; Shoe 1 is located at pipe 2 lower ends of fetching earth, and is the uniclinal declivous cutting edge of 5 ° of the basils; Shoe 1 length is 35mm, the shoe 1 and pipe 2 integral manufacturings that fetch earth; Shoe 1, pipe 2 endoporus that fetch earth adopt the deep hole boring, then grind, and inner wall roughness is 0.8; Piston 3 materials are 7075 aviation ultralumins, carry out thermal deformation before the processing and handle, and its compressive deformation amount is little, and density is little, and hardness is big, and wearing quality is high; Piston 2 fits tightly with the soil sample barrel inwall, can in the shoe 1 and the pipe 2 that fetches earth, move freely; Attachment cap 4 materials are 302 stainless steels, and internal diameter is 53mm, and external diameter is 60mm; Attachment cap 4 inboards are provided with screw thread, are connected with the screw thread in pipe 2 outsides of fetching earth; It is the cylindrical bump of 36mm that there is a diameter attachment cap 4 upper ends, and it is the cylinder shape groove of 24mm that a diameter is arranged on the projection, and respectively there is a pin hole groove both sides; The diameter of electric pushrod 8 lower ends is 23mm, and is provided with a through hole, links to each other with attachment cap 4 through latch 9; It is the through hole that 10mm has internal thread that attachment cap 4 one sides are provided with a diameter, and through hole is communicated with pipe 2 inner chambers that fetch earth, and through hole is connected with the external thread of duplex fitting 5 one ends; The internal diameter of rubber hose 6 is 16mm, an end and duplex fitting 5 sockets, the valve socket of the other end and electric air pump 7; Electric air pump 7 is selected ACO-018A type electromagnetic air pump for use, and voltage is 220V, and frequency is 50Hz, and electric current is 2.30A, and power is 520W, and discharge pressure is 0.04MPa, and the valve external diameter is 16mm.
In order to set forth the utility model more in detail, the operation and the process of the test of the utility model are following:
1), the test before, the sample soil sample is put into model casing, with the soil sample surface evening;
2), smear a little vaseline at the inside and outside wall of the shoe 1 and the pipe 2 that fetches earth; Shoe 1 cutting edge just in time is affixed on the position soil body surface that fetches earth, and the piston 3 in the pipe 2 that fetches earth drops to the surface of fetching earth automatically because of gravity;
3), with the be connected disconnection of rubber hose 6 with duplex fitting 5, open electric pushrod 8 then, the lower end of electric pushrod 8 slowly at the uniform velocity descends, and the shoe 1 and pipe 2 static pressure that fetch earth are gone in the soil sample;
4), the pipe 2 of waiting to fetch earth is pressed into the design degree of depth place that fetches earth, and breaks off electric pushrod 8 and is connected with the latch of attachment cap 4, then the pin hole on the latch 9 insertion attachment caps 4 rotated for 2 weeks, making fetches earth manages soil sample in 2 and twists off with soil sample in the case and separate;
5), with latch 9 electric pushrod 8 is connected with attachment cap 4 then, and with rubber hose 6 and duplex fitting 5 sockets, open electric pushrod 8 and electric air pump 7 then simultaneously, slowly at the uniform velocity rising in electric pushrod 8 lower ends, makes soil sample barrel upwards carry soil; Electric air pump 7 gas bleedings in the pipe 2 that fetches earth simultaneously provide to upper pulling force and prevent to propose the decline generation of native phenomenon of native process; Finally, the pipe 2 that fetches earth is slowly extracted the soil body of electric pushrod 8 in model casing 1, closes electric air pump 7;
6), the latch 9 in the middle of electric pushrod 8 and the attachment cap 4 is pulled out; The parts of soil sample barrel except that electric pushrod 8 are placed cut on the earthen platform, open electric air pump 7 inflation in the pipe 2 that fetches earth, under the effect that the pipe internal pressure strengthens, piston 3 is slowly released soil sample in the pipe 2 that fetches earth;
7), with the fret-saw excision soil sample two ends part that is squeezed, and the part that receives the sidewall friction force-disturbance all around can obtain not having disturbed soil appearance; Prepare requirement according to scanning electron microscope example, produce the elongated bar-shaped sample of required observation place of test, be used for carrying out scanning electron microscope analysis, obtain the micromechanism of soil sample.
Claims (3)
1. model test soil sample barrel that is used for Micro-Structure Analysis; It is characterized in that this soil sample barrel comprises shoe (1), the pipe (2) that fetches earth, piston (3), attachment cap (4), duplex fitting (5), rubber hose (6), electric air pump (7), electric pushrod (8) and latch (9); Wherein, shoe (1) is located at the lower end of pipe (2) of fetching earth, and is the uniclinal declivous cutting edge; Fetching earth is provided with a piston (3) in the pipe (2), can move up and down; Fetch earth pipe (2) upper end is connected with screw thread with attachment cap (4), on the attachment cap (4) cylindrical bump is arranged, and a cylinder shape groove is arranged on the projection, and respectively there is a pin hole groove both sides; Electric pushrod (8) lower end is provided with a through hole, and links to each other with attachment cap (4) through latch (9); Attachment cap (4) one sides be provided with one have an internal thread through hole, the intracavity inter-connection of this through hole and pipe (2) of fetching earth; Through hole is connected with the external thread of duplex fitting (5) one ends, an end of rubber hose (6) and duplex fitting (5) socket, the valve socket of the other end and electric air pump (7).
2. according to claims 1 described a kind of model test soil sample barrel that is used for Micro-Structure Analysis, it is characterized in that said shoe (1) is an integral manufacturing with the pipe (2) that fetches earth, shoe (1), the pipe (2) that fetches earth are the thin-walled pressure parts.
3. according to claims 1 described a kind of model test soil sample barrel that is used for Micro-Structure Analysis, it is characterized in that, the inner wall smooth of said pipe (2) of fetching earth, internal diameter is identical, and the upper end of external diameter is less than the lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205252443U CN202362166U (en) | 2011-12-15 | 2011-12-15 | Model test soil sampler for analyzing microstructure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011205252443U CN202362166U (en) | 2011-12-15 | 2011-12-15 | Model test soil sampler for analyzing microstructure |
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| CN202362166U true CN202362166U (en) | 2012-08-01 |
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| CN2011205252443U Expired - Fee Related CN202362166U (en) | 2011-12-15 | 2011-12-15 | Model test soil sampler for analyzing microstructure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692336A (en) * | 2012-05-29 | 2012-09-26 | 南昌大学 | Undisturbed soil sampler |
| CN103968774A (en) * | 2014-04-30 | 2014-08-06 | 河海大学 | Model test device for measuring internal displacement of soil body in soil sampling process and use method thereof |
| CN106198109A (en) * | 2016-07-20 | 2016-12-07 | 河南理工大学 | A kind of bauxite mineral exploration sampler |
| CN107505167A (en) * | 2017-08-17 | 2017-12-22 | 上海市城市排水有限公司 | A kind of drainage pipeline undisturbed sediment sampler and its method for sampling |
-
2011
- 2011-12-15 CN CN2011205252443U patent/CN202362166U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692336A (en) * | 2012-05-29 | 2012-09-26 | 南昌大学 | Undisturbed soil sampler |
| CN102692336B (en) * | 2012-05-29 | 2017-08-22 | 南昌大学 | Undisturbed soil soil sampler |
| CN103968774A (en) * | 2014-04-30 | 2014-08-06 | 河海大学 | Model test device for measuring internal displacement of soil body in soil sampling process and use method thereof |
| CN106198109A (en) * | 2016-07-20 | 2016-12-07 | 河南理工大学 | A kind of bauxite mineral exploration sampler |
| CN107505167A (en) * | 2017-08-17 | 2017-12-22 | 上海市城市排水有限公司 | A kind of drainage pipeline undisturbed sediment sampler and its method for sampling |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20121215 |