CN102175484A - Special soil-fetching device for static triaxial compression test of soil - Google Patents
Special soil-fetching device for static triaxial compression test of soil Download PDFInfo
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- CN102175484A CN102175484A CN2011100217429A CN201110021742A CN102175484A CN 102175484 A CN102175484 A CN 102175484A CN 2011100217429 A CN2011100217429 A CN 2011100217429A CN 201110021742 A CN201110021742 A CN 201110021742A CN 102175484 A CN102175484 A CN 102175484A
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Abstract
The invention relates to a special soil-fetching device for a static triaxial compression test of soil, comprising an external tube of the soil-fetching device, wherein the external tube of the soil-fetching device is a framework structure; the upper end of the external tube of the soil-fetching device is connected with a joint, and the lower end of the external tube of the soil-fetching device is connected with a tubular boot; a center shaft rod of the soil-fetching device is arranged in the inner center of the external tube of the soil-fetching device; the upper end of the center shaft rod of the soil-fetching device is connected with the joint; and a plurality of sampling tubes are arranged on the center shaft rod of the soil-fetching device. The special soil-fetching device is pressed into the soil layer at the bottom of a borehole to sample the soil in a static manner when the soil layer of a predetermined depth is drilled by a universal drilling device. After finishing sampling the soil, the special soil-fetching device is rotated at a certain angle through the drilling device so as to disconnect the soil sample in the standard sampling tubes from the lower soil layer, the special soil-fetching device is taken out from the borehole, and then the sampling tubes are unloaded, placed in a storage box and delivered to a lab; and the operation for next soil sampling can be performed by re-installing new sampling tubes. The soil sample taken out from the sampling tubes can be directly used for a test by testing personnel, thus the accuracy and success ratio of the test can be ensured, and the working efficiency is improved.
Description
Technical field
The present invention relates to a kind of drawing out soil equipment, the special-purpose soil sample barrel of especially a kind of quiet triaxial compression test of soil.
Background technology
The quiet triaxial compression test of soil is a kind of test method commonly used in the laboratory soil test, and test objective is to measure the total shear strength parameter and the effective shear strength parameters of fine grained soil and sandy soil.4 cylindrical samples of the general employing of soil sample.
Test principle: at different constant ambient pressure (σ
3) under apply corresponding axle pressure (σ
1) soil sample is sheared up to destruction; Theoretical according to mole-enclosed pasture then, calculate and try to achieve shear strength parameter.
The soil sample preparation process that test is adopted: be drilled in the predetermined depth soil layer with drilling tools, adopt common soil sample barrel to take a big soil sample.Then soil sample is transported to the laboratory.At first with fret-saw with repair the big soil sample of native hilt and be cut into cylindrical sample, be prepared into earlier greater than the blank of test with specimen finish and height, and then be put in the soil-cutter with fret-saw with repair native cutter and cut once more, be prepared into the test sample of the specification that requires.
Existing problems: relatively poor with the soil sample sealing that common soil sample barrel is taked, natural aqueous rate, the natural density of soil sample there is considerable influence; In the virgin state of soil sample that has been transported to testing laboratory's process vibration influence, make the sample data distortion; Preparation test sample success ratio is very low in the laboratory, has caused great waste in expense with on the duration.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art, a kind of special-purpose soil sample barrel of quiet triaxial compression test for preparing sample efficient height,, sampling success ratio height little to the sample disturbance, simple in structure, easy to use, expense is low, work efficiency is high soil is provided.
For achieving the above object, the present invention adopts following technical proposals:
The special-purpose soil sample barrel of a kind of quiet triaxial compression test of soil, comprise the soil sample barrel outer tube, described soil sample barrel outer tube is a tower structure, soil sample barrel outer tube upper end links to each other with joint, the lower end links to each other with shoe, the center is provided with axostylus axostyle in upper end and the soil sample barrel that joint links to each other in the soil sample barrel outer tube, and axostylus axostyle is provided with some sampler barrel devices in the soil sample barrel.
Described soil sample barrel outer tube comprises two protection annulus up and down, is connected with some vertical steel plates between the two protection annulus, and described vertical steel plate upper end is crossed the inside bending of top annulus and linked to each other with joint.
Described soil sample barrel outer tube lower end links to each other with shoe by screw thread.
The outside, described shoe lower end is a uniclinal declivous cutting edge structure.
Described joint top is provided with the screw thread that cooperates with the drilling rod nut.
Axostylus axostyle lower pole end is conical in the described soil sample barrel.
Described sampler barrel device comprises sampler barrel and sampler barrel sleeve pipe, the sampler barrel sleeve pipe is divided into two-layer setting up and down, every layer is equipped with several sampler barrel sleeve pipes, and the inner side edge of each sampler barrel sleeve pipe links to each other with axostylus axostyle in the soil sample barrel by connecting link, and outer side edges is fixedlyed connected with the soil sample barrel outer tube wall; Described sampler barrel is arranged in the sampler barrel sleeve pipe, and the sampler barrel upper end is by being threadedly connected in the sampler barrel sleeve pipe of upper strata, and lower floor's sampler barrel sleeve pipe is passed in the lower end.
Described sampler barrel is made up of two opposite opened semicanals, and the lower end of sampler barrel is by the sampler barrel shoe that has been threaded.
The outside, described sampler barrel shoe lower end is a uniclinal declivous cutting edge structure.
The present invention utilizes existing general drilling equipment to carry out work.Be drilled in the predetermined depth soil layer with drilling tools, utilize the static pressure mode that the present invention is pressed in the boring bottom solum and carry out soil sampling.Install 4 removably standard sampler barrels among the present invention, can take 4 standard soil samples that satisfy the test sample specification requirement simultaneously.The scene rotates to an angle the present invention by drilling tool after fetching earth and finishing, and soil sample and bottom soil layer gets in touch in the cut-out standard sampler barrel.From boring, take out the present invention then, unload sampler barrel, and be placed into to preserve in the case and deliver to the laboratory, reinstall new sampler barrel and carry out soil sampling next time.Testing crew can directly utilize the soil sample that takes out from sampler barrel to test, and has guaranteed accuracy, the success ratio of test, has improved work efficiency.
The present invention has following characteristics:
1. prepare test sample efficient height.Utilize the present invention can disposablely successfully make native 4 used samples of quiet triaxial compression test.The tradition method of preparing sample be at first with fret-saw with repair big soil sample of native hilt and be cut into cylindrical sample, be prepared into earlier greater than the blank of test with specimen finish and height, and then be put in the soil-cutter with fret-saw with repair native cutter and cut once more, be prepared into the test sample of the specification that requires.Shred easily for the pan soil sample during practical operation, it is very difficult to prepare 4 soil samples simultaneously; For the weak soil sample, because its creeping property, soil sample is shaped very difficult; If the soil sample preparation is unsuccessful or can not prepare 4 soil samples simultaneously, not only Tu quiet triaxial compression test can't be finished, and the soil sample that obtains from the scene is also scrapped simultaneously.
2. little to the test sample disturbance, test accuracy height.Adopting the little obtained sample of the present invention is disposable preparation, reduced manually repeatedly with fret-saw with repair native cutter working angles, reduced degree to the soil sample disturbance.
Because the protection of sampler barrel is arranged, the vibration influence of having avoided soil sample to produce from the scene to the laboratory handling process as far as possible.The sampler barrel upper end open, the foot of hole relict soil is scurried out from the upper end, and soil sample is not produced compacted influence.
Soil sample barrel top commonly used is for sealing, when the foot of hole relict soil produces artificial compacted effect to soil sample more easily.The soil sample barrel outer tube adopts the cutting edge design of partially enclosed structure, shoe all to effectively reduce the resistance of soil layer in the process of fetching earth and to the pressure influence of soil sample, makes the sample that the fetches earth structure that maintains the original state as far as possible.
3. test sample is taked the success ratio height.Use traditional soil sample barrel, take 1 cylindrical soil sample, upwards lift soil sample barrel after being pressed onto predetermined depth, so that break getting in touch of soil sample and following soil layer in the soil sample barrel; Because the soil sample barrel inner wall smooth, friction force is little, often makes that soil sample and the following soil layer in the soil sample barrel can not disconnect, and makes soil sample slippage soil sample barrel, and failure causes fetching earth.Use when of the present invention, owing to adopt the sampler barrel of 4 diverse locations, after soil sample barrel rotates to an angle, effectively cut off in the sampler barrel and to get in touch the success ratio that fetches earth height between the sample and the following soil body.
4. simple to operate, easy to use.The present invention adopts removably sampler barrel, uses very convenient.Because the soil sample barrel outer tube adopts unenclosed construction, be easier to remove sampler barrel roach all around, easily load and unload sampler barrel.
5. features simple structure is easy to safeguard.It is convenient to change for the shoe of rapid wear.Soil sample barrel is inner adopt in axostylus axostyle and two-layer connecting link structure, make that whole soil sample barrel structural strength is higher, effectively reduce in the process of fetching earth influence simultaneously to soil sample.
6. expense is low, the work efficiency height.The present invention is simple in structure, and cost is lower.Because on-the-spot specification of being materialsed satisfies testing requirements, can test immediately after delivering to the laboratory, shortened the duration, improved work efficiency.
Description of drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is an external structure front view of the present invention;
Fig. 3 is a vertical view of the present invention;
Fig. 4 is a upward view of the present invention;
Fig. 5 is the sampler barrel front view;
Wherein 1. joints, 2. soil sample barrel outer tube, 3. sampler barrel sleeve pipe, 4. sampler barrel, 5. axostylus axostyle in the soil sample barrel, 6. shoe, 7. sampler barrel shoe, 8. connecting link.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Shown in Fig. 1-5, the special-purpose soil sample barrel of a kind of quiet triaxial compression test of soil, comprise soil sample barrel outer tube 2, described soil sample barrel outer tube 2 is a tower structure, soil sample barrel outer tube 2 upper ends link to each other with joint 1, the lower end links to each other with shoe 6, and centers are provided with axostylus axostyle 5 in upper end and the soil sample barrel that joint 1 links to each other in the soil sample barrel outer tube 2, and axostylus axostyle 5 is provided with some sampler barrel devices in the soil sample barrel.
Soil sample barrel outer tube 2 lower ends link to each other with shoe 6 by screw thread.Fixedly connected with joint 1 in soil sample barrel outer tube 2 tops, the bottom is threaded with shoe 6.This soil sample barrel outer tube 2 is made up of 4 vertical steel plates, and upper and lower end is provided with a protection annulus respectively, and vertical steel plate upper end is crossed the inside bending of top annulus and linked to each other with joint 1, so that the reinforcement unitarity structural strength.Between steel plate, the annulus empty wall, reducing in the process of fetching earth the resistance of soil, and conveniently assemble and disassemble sampler barrel 4.
In the soil sample barrel fixedly connected with joint 1 in axostylus axostyle 5 upper ends, fixedlys connected with the connecting link 8 of cross shape in middle part, lower end, and it is conical that the bottom rod end is, the soil resistance that produces when reducing the injection soil layer.Mainly act as and strengthen the soil sample barrel overall construction intensity, prevent that soil sample barrel from use producing distortion.
The sampler barrel device comprises sampler barrel 4 and sampler barrel sleeve pipe 3, the two-layer setting up and down in 3 fens of sampler barrel sleeve pipe, every layer is equipped with 4 sampler barrel sleeve pipes 3, and the inner side edge of each sampler barrel sleeve pipe 3 links to each other with axostylus axostyle 5 in the soil sample barrel by connecting link 8, and outer side edges is fixedlyed connected with soil sample barrel outer tube 2 inwalls; Described sampler barrel 4 is arranged in the sampler barrel sleeve pipe 3, and sampler barrel 4 upper ends are by being threadedly connected in the upper strata sampler barrel sleeve pipe 3, and lower floor's sampler barrel sleeve pipe 3 is passed in the lower end.In soil sample barrel outer tube 2 inside two-layer connecting link is set, fixedlys connected, mainly act as and strengthen the soil sample barrel overall construction intensity, prevent that soil sample barrel from use producing distortion with axostylus axostyle in the soil sample barrel 5, sampler barrel sleeve pipe 3.
The two-layer setting in 3 fens of sampler barrel sleeve pipe.Upper strata sampler barrel sleeve pipe 3 is threaded with sampler barrel 4, is pressed into or proposes in the soil layer in the present invention, plays the fixedly effect of sampler barrel 4 positions; Lower floor's sleeve pipe is not connected with sampler barrel 4, restriction sampler barrel 4 levels to move, guarantee sampler barrel 4 when being pressed into soil layer, keep vertically to.The sampler barrel sleeve pipe is inboard fixedlys connected with connecting link 8, fixedlys connected with soil sample barrel outer tube 2 in the outside.
The present invention utilizes existing general drilling equipment to carry out work.Be drilled in the predetermined depth soil layer with drilling tools, utilize the static pressure mode that the present invention is pressed in the boring bottom solum and carry out soil sampling.Install 4 removably standard sampler barrels 4 among the present invention, can take 4 standard soil samples that satisfy the test sample specification requirement simultaneously.The scene rotates to an angle the present invention by drilling tool after fetching earth and finishing, and soil sample and bottom soil layer gets in touch in the cut-out standard sampler barrel.From boring, take out the present invention then, unload sampler barrel 4, and be placed into to preserve in the case and deliver to the laboratory, reinstall new sampler barrel and carry out soil sampling next time.Testing crew can directly utilize the soil sample that takes out from sampler barrel 4 to test, and has guaranteed accuracy, the success ratio of test, has improved work efficiency.
Claims (9)
1. the special-purpose soil sample barrel of the quiet triaxial compression test of a soil, comprise the soil sample barrel outer tube, it is characterized in that: described soil sample barrel outer tube is a tower structure, soil sample barrel outer tube upper end links to each other with joint, the lower end links to each other with shoe, the center is provided with axostylus axostyle in upper end and the soil sample barrel that joint links to each other in the soil sample barrel outer tube, and axostylus axostyle is provided with some sampler barrel devices in the soil sample barrel.
2. the special-purpose soil sample barrel of the quiet triaxial compression test of soil according to claim 1; it is characterized in that: described soil sample barrel outer tube comprises two protection annulus up and down; be connected with some vertical steel plates between the two protection annulus, described vertical steel plate upper end is crossed the inside bending of top annulus and is linked to each other with joint.
3. the special-purpose soil sample barrel of the quiet triaxial compression test of soil according to claim 1, it is characterized in that: described soil sample barrel outer tube lower end links to each other with shoe by screw thread.
4. the special-purpose soil sample barrel of the quiet triaxial compression test of soil according to claim 1 is characterized in that: be uniclinal declivous cutting edge structure outside the described shoe lower end.
5. the special-purpose soil sample barrel of the quiet triaxial compression test of soil according to claim 1, it is characterized in that: described joint top is provided with the screw thread that cooperates with the drilling rod nut.
6. the special-purpose soil sample barrel of the quiet triaxial compression test of soil according to claim 1, it is characterized in that: axostylus axostyle lower pole end is conical in the described soil sample barrel.
7. the special-purpose soil sample barrel of the quiet triaxial compression test of soil according to claim 1, it is characterized in that: described sampler barrel device comprises sampler barrel and sampler barrel sleeve pipe, the sampler barrel sleeve pipe is divided into two-layer setting up and down, every layer is equipped with several sampler barrel sleeve pipes, the inner side edge of each sampler barrel sleeve pipe links to each other with axostylus axostyle in the soil sample barrel by connecting link, and outer side edges is fixedlyed connected with the soil sample barrel outer tube wall; Described sampler barrel is arranged in the sampler barrel sleeve pipe, and the sampler barrel upper end is by being threadedly connected in the sampler barrel sleeve pipe of upper strata, and lower floor's sampler barrel sleeve pipe is passed in the lower end.
8. the special-purpose soil sample barrel of the quiet triaxial compression test of soil according to claim 7, it is characterized in that: described sampler barrel is made up of two opposite opened semicanals, and the lower end of sampler barrel is by the sampler barrel shoe that has been threaded.
9. the special-purpose soil sample barrel of the quiet triaxial compression test of soil according to claim 8 is characterized in that: be uniclinal declivous cutting edge structure outside the described sampler barrel shoe lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110021742 CN102175484B (en) | 2011-01-19 | 2011-01-19 | Special soil-fetching device for static triaxial compression test of soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110021742 CN102175484B (en) | 2011-01-19 | 2011-01-19 | Special soil-fetching device for static triaxial compression test of soil |
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| CN102175484A true CN102175484A (en) | 2011-09-07 |
| CN102175484B CN102175484B (en) | 2013-01-02 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419267A (en) * | 2011-12-15 | 2012-04-18 | 南京大学 | Indoor model test soil borrowing device based on micro-structure analysis and soil borrowing method |
| CN104048847A (en) * | 2014-06-05 | 2014-09-17 | 鞍钢集团矿业公司 | Tri-axial sample compression soil sampler |
| CN107024373A (en) * | 2017-04-27 | 2017-08-08 | 上海市政工程设计研究总院（集团）有限公司 | A kind of three axle soil-cutter devices |
| CN107676087A (en) * | 2017-11-07 | 2018-02-09 | 吉林大学 | A kind of quiet three axles original position soil sampler of weak soil |
| CN112647878A (en) * | 2020-12-24 | 2021-04-13 | 江苏拓海煤矿钻探机械有限公司 | Colliery drilling rod with sample structure |
| CN114112509A (en) * | 2021-12-15 | 2022-03-01 | 南京工业大学 | Soil sample membrane loading device for soil-driven triaxial test |
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| CN201575937U (en) * | 2009-11-19 | 2010-09-08 | 广西大学 | Two-dimensional concrete positioning and sampling device |
| CN201935825U (en) * | 2011-01-19 | 2011-08-17 | 山东电力工程咨询院有限公司 | Special soil sampler used for static triaxial compressing test of soil |
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Patent Citations (4)
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| CN201060110Y (en) * | 2006-12-29 | 2008-05-14 | 中国科学院武汉岩土力学研究所 | Group connecting type rotary earth borrowing apparatus |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419267A (en) * | 2011-12-15 | 2012-04-18 | 南京大学 | Indoor model test soil borrowing device based on micro-structure analysis and soil borrowing method |
| CN102419267B (en) * | 2011-12-15 | 2013-11-27 | 南京大学 | Indoor model test soil borrowing device based on micro-structure analysis and soil borrowing method |
| CN104048847A (en) * | 2014-06-05 | 2014-09-17 | 鞍钢集团矿业公司 | Tri-axial sample compression soil sampler |
| CN107024373A (en) * | 2017-04-27 | 2017-08-08 | 上海市政工程设计研究总院（集团）有限公司 | A kind of three axle soil-cutter devices |
| CN107676087A (en) * | 2017-11-07 | 2018-02-09 | 吉林大学 | A kind of quiet three axles original position soil sampler of weak soil |
| CN107676087B (en) * | 2017-11-07 | 2023-11-10 | 吉林大学 | Static triaxial in-situ soil sampler for soft soil |
| CN112647878A (en) * | 2020-12-24 | 2021-04-13 | 江苏拓海煤矿钻探机械有限公司 | Colliery drilling rod with sample structure |
| CN114112509A (en) * | 2021-12-15 | 2022-03-01 | 南京工业大学 | Soil sample membrane loading device for soil-driven triaxial test |
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| CN102175484B (en) | 2013-01-02 |
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