CN205941295U - Experimental penetrant unit of glutinous medium -sized sample constant head seepage deformation of matter coarse -grained soil - Google Patents
Experimental penetrant unit of glutinous medium -sized sample constant head seepage deformation of matter coarse -grained soil Download PDFInfo
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- CN205941295U CN205941295U CN201620907701.8U CN201620907701U CN205941295U CN 205941295 U CN205941295 U CN 205941295U CN 201620907701 U CN201620907701 U CN 201620907701U CN 205941295 U CN205941295 U CN 205941295U
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Abstract
The utility model discloses an experimental penetrant unit of glutinous medium -sized sample constant head seepage deformation of matter coarse -grained soil, including test specimen tube (1), test specimen tube (1) upper end is connected with upper portion steel loop (12), is provided with on upper portion cavity steel loop (12) delivery port (9), and upper portion cavity steel loop (12) top is round steel piece (10), and round steel piece (10) are connected rather than rotatory screw rod (11) of top, test specimen tube (1) lower extreme is connected with lower part steel loop (13), and lower part steel loop (13) go up to open has water inlet (7), and the outside terminal surface and the one end of screw rod (8) of upper portion cavity steel loop (12) are connected, and the other end and the lower part steel loop (13) of screw rod (8) are connected. The utility model discloses damage process accords with infiltration destruction characteristics, and the destruction gradient that records is authentic and valid, and this penetrant unit can record the osmotic coefficient of soil sample when the water inlet flood peak is lower, can record the seepage deformation gradient under the high water head.
Description
Technical field
This utility model is related to a kind of test permeability apparatus, can be used for carrying out the infiltration coefficient of medium size sample and oozes
Deformation test thoroughly, belongs to the experimental technique field in Geotechnical Engineering.
Background technology
The permeability test of the clayey soil in During Geotechnical Tests In Laboratory has two ways at present.First kind of way is thin for clayey
Grain soil, mainly uses the permeameter of standard, the size of style is Φ 61.8mm*40mm, and penetration mode permeates for varying head,
The infiltration coefficient of soil only can be recorded.The second way is directed to clayey coarse-grained soil, and sample maximum particle diameter, up to 60mm, mainly adopts
Specimen size is the Vertical permeameter of Φ 300mm*600mm, and penetration mode permeates for constant head, can record the infiltration coefficient of soil
With seepage deformation hydraulic slope.
The type of existing clayey soil permeability test can only be directed to fine grained soil and large-sized coarse-grained soil, there is not yet in being directed to
The permeameter of the clayey coarse-grained soil of type sample.In view of in soil test, typically it is both needed to carry out for clayey coarse-grained soil simultaneously
Large scale and the mechanical test of medium size, also are intended to carry out large scale in Penetration Signature simultaneously and the infiltration of medium size become
Property test.And the relevant regulations do not tested for medium-sized sample in specification, the main object of the present invention be in order to
Realize the seepage deformation test of the medium-sized sample of clayey coarse-grained soil.
Content of the invention
The technical problems to be solved in the utility model is：One kind is provided to can be used for carrying out clayey coarse-grained soil medium-sized sample ordinary water
The permeability apparatus of head seepage deformation test, to solve to carry out big-and-middle-sized Coarse Grained Soil Seepage Deformation test in current During Geotechnical Tests simultaneously
Demand.
The technical solution of the utility model is as follows：
A kind of permeability apparatus of the medium-sized sample constant head seepage deformation test of clayey coarse-grained soil, including test specimen tube, test specimen tube
Upper end is connected with upper hollow steel loop by upper sealing collar, upper hollow steel loop is provided with outlet, on upper hollow steel loop
Side is round steel piece, and round steel piece is connected with the rotary screw above it.
Test specimen tube lower end is connected with bottom steel loop by lower sealing collar, and also sets up between test specimen tube lower end and bottom steel loop
There is permeable stone.
Compare existing permeability apparatus, the maximum substantive features of this utility model are exactly that the area of round steel piece is less than upper hollow
The hollow area of steel loop, and its center of circle is on the axis of test cylinder.Area due to round steel piece is less than upper hollow steel loop
Hollow area, the upper surface of therefore sample not completely encloses, this set so that experimental condition close to the soil body reality
Border collapse state, can accurately measure destruction gradient, and can understand the destructive process intuitively observing soil.
Water inlet is had on the steel loop of bottom, the end face outside of upper hollow steel loop is connected with one end of screw rod, screw rod another
One end is connected with bottom steel loop.
Described rotary screw is connected with the entablature of door shape reaction frame.
Described test specimen tube is supreme, lower surface rustless steel cylinder, and the size of test specimen tube is Φ 100mm*100mm.
Specimen size in the medium-sized mechanical test of clayey coarse-grained soil is generally Φ 100mm, the infiltration dress in this utility model
Put and be made up of a size of test specimen tube of Φ 100mm*100mm and an a set of rigid reaction rack equipment, rigid reaction rack equipment bag
Upper hollow steel loop, bottom steel loop and door shape reaction frame are included.Test specimen tube is a stainless steel cylinder, and thickness is about 5mm, and rustless steel tries
Sample cylinder built-in infiltration sample, rustless steel test specimen tube is placed in a shape reaction frame.Reaction rack equipment plays fixing test specimen tube and sealing
Effect.Coordinated by two screw rods and upper hollow steel loop, the upper end of test specimen tube fixed, the bottom steel loop of reaction frame and on
It is respectively provided with a watertight rubber circle between portion's hollow steel loop and test specimen tube, produce pressure by tightening screw rod, by two rubber rings
It is pressed on the lower edges of test specimen tube, play sealing the effect of fixing test specimen tube.The bottom steel loop of reaction rack equipment is provided with one
Individual press water water inlet, upstream constant head hydraulic pressure enters sample bottom from this water inlet, upper hollow steel loop has one go out
The mouth of a river, infiltration current oozed inside sample from bottom to top, flowed out to carry out flow measurement from this mouthful.Door shape reaction frame upper end is horizontal
Beam is provided with a rotary screw, and a piece of roundlet steel disc has been welded in rotary screw bottom, is rotated down this rotary screw, due to
It is empty in the middle of upper hollow steel loop, so that roundlet steel disc is contacted with sample upper face center, you can to give in seepage deformation test
Sample applies counter-force, and applying counter-force is the impact test in order to prevent sample from floating up under hydraulic pressure effect in process of the test
Result.
This utility model originally provides one kind and can be used for carrying out clayey coarse-grained soil medium-sized sample constant head seepage deformation test
Permeability apparatus, the seepage deformation test of clayey coarse-grained soil medium size sample can be carried out.Can be surveyed using this device simultaneously
Obtain infiltration coefficient and the seepage deformation hydraulic slope of soil sample, can intuitively observe the breakoff phenomenon of soil sample, due in test
During a soil sample counter-force being subject to from upper face center, sample can be prevented prematurely overall floating in process of the test
Rise.And this counter-force is not to act on the whole upper surface of sample, act only in a small area, other regions still give soil
There is the space of failure by piping in sample, that is, soil sample still can be destroyed from other regions.Process of the test soil sample stress is clear, surveys
The seepage deformation hydraulic slope obtaining is neither excessive, only little, and destructive process meets seepage failure feature, makes the destruction slope recording
Fall is authentic and valid.And this permeability apparatus can record the infiltration coefficient of soil sample when water inlet head is relatively low, can under high water head
To record seepage deformation gradient.
Brief description
Fig. 1 is the test specimen tube structural representation in this utility model；
Fig. 2 is the permeability apparatus schematic diagram in this utility model；
Fig. 3 is the right view of Fig. 2.
Specific embodiment
Specimen size in the medium-sized mechanical test of clayey coarse-grained soil is generally Φ 100mm, the infiltration dress in this utility model
Put and be made up of a size of test specimen tube 1 of Φ 100mm*100mm and an a set of rigid reaction rack equipment, rigid reaction rack equipment bag
Include a shape reaction frame 2, upper hollow steel loop 12, bottom steel loop 13 and two screw rods 8.
As shown in FIG. 1 to 3, the permeability apparatus of the medium-sized sample constant head seepage deformation test of a kind of clayey coarse-grained soil, bag
Include supreme, lower surface cylindrical rustless steel test specimen tube 1, filling sample 4 in test specimen tube 1, test specimen tube 1 upper end is by upper sealing collar
3 are connected with upper hollow steel loop 12, upper hollow steel loop 12 are provided with outlet 9, upper hollow steel loop 12 top is round steel
Piece 10, the area of round steel piece 10 is less than the hollow area of upper hollow steel loop 12 and its center of circle is located on the axis of test cylinder 1,
Round steel piece 10 is connected with the rotary screw 11 above it, and rotary screw 11 is connected with the entablature of door shape reaction frame 2.Test specimen tube
1 lower end is connected with bottom steel loop 13 by lower sealing collar 5, and is additionally provided with permeable between test specimen tube 1 lower end and bottom steel loop 13
Stone 6；Water inlet 7 is had on bottom steel loop 13, the end face outside of upper hollow steel loop 12 is connected with one end of screw rod 8, screw rod 8
The other end is connected with bottom steel loop 13.
Claims (3)
1. a kind of medium-sized sample constant head seepage deformation test of clayey coarse-grained soil permeability apparatus it is characterised in that：Including sample
Cylinder (1), test specimen tube (1) upper end is connected with top steel loop (12) by upper sealing collar (3), and upper hollow steel loop is provided with (12)
Outlet (9), is round steel piece (10) above upper hollow steel loop (12), and round steel piece (10) is connected with the rotary screw (11) above it
Connect；
Described test specimen tube (1) lower end is connected with bottom steel loop (13) by lower sealing collar (5), and test specimen tube (1) lower end and bottom
It is additionally provided with permeable stone (6) between steel loop (13)；
The area of described round steel piece (10) is less than the hollow area of upper hollow steel loop (12), and its center of circle is located at test cylinder (1)
Axis on；
Water inlet (7), one end of the end face outside of upper hollow steel loop (12) and screw rod (8) are had on described bottom steel loop (13)
Connect, the other end of screw rod (8) is connected with bottom steel loop (13).
2. the permeability apparatus of the medium-sized sample constant head seepage deformation test of a kind of clayey coarse-grained soil as claimed in claim 1, its
It is characterised by：Described rotary screw (11) is connected with the entablature of door shape reaction frame (2).
3. the permeability apparatus of the medium-sized sample constant head seepage deformation test of a kind of clayey coarse-grained soil as claimed in claim 1, its
It is characterised by：Test specimen tube (1) is supreme, lower surface rustless steel cylinder, and the size of test specimen tube (1) is Φ 100mm*
100mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620907701.8U CN205941295U (en) | 2016-08-19 | 2016-08-19 | Experimental penetrant unit of glutinous medium -sized sample constant head seepage deformation of matter coarse -grained soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620907701.8U CN205941295U (en) | 2016-08-19 | 2016-08-19 | Experimental penetrant unit of glutinous medium -sized sample constant head seepage deformation of matter coarse -grained soil |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181220A (en) * | 2017-12-13 | 2018-06-19 | 浙江大学 | The experimental rig of coarse-grained soil horizontal direction and vertical saturation permeability coefficient under different pressures is tested in a kind of interior simultaneously |
| CN109752305A (en) * | 2019-02-27 | 2019-05-14 | 中国地质大学（武汉） | A kind of constant head soil permeability coefficient measurement device |
| CN113820194A (en) * | 2021-10-25 | 2021-12-21 | 福建工程学院 | Infiltration device and method for removing free iron oxide in soil |
-
2016
- 2016-08-19 CN CN201620907701.8U patent/CN205941295U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181220A (en) * | 2017-12-13 | 2018-06-19 | 浙江大学 | The experimental rig of coarse-grained soil horizontal direction and vertical saturation permeability coefficient under different pressures is tested in a kind of interior simultaneously |
| CN108181220B (en) * | 2017-12-13 | 2024-02-27 | 浙江大学 | Test device for simultaneously testing horizontal and vertical saturation permeability coefficients of coarse-grained soil under different pressures indoors |
| CN109752305A (en) * | 2019-02-27 | 2019-05-14 | 中国地质大学（武汉） | A kind of constant head soil permeability coefficient measurement device |
| CN109752305B (en) * | 2019-02-27 | 2022-09-30 | 中国地质大学（武汉） | Constant head soil permeability coefficient measuring device |
| CN113820194A (en) * | 2021-10-25 | 2021-12-21 | 福建工程学院 | Infiltration device and method for removing free iron oxide in soil |
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