CN206161486U - Quick permeability test device suitable for low permeability medium - Google Patents
Quick permeability test device suitable for low permeability medium Download PDFInfo
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- CN206161486U CN206161486U CN201621065698.6U CN201621065698U CN206161486U CN 206161486 U CN206161486 U CN 206161486U CN 201621065698 U CN201621065698 U CN 201621065698U CN 206161486 U CN206161486 U CN 206161486U
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Abstract
The utility model relates to a quick permeability test device suitable for low permeability medium. The utility model aims at providing a simple structure, quick, the accurate quick permeability test device suitable for low permeability medium of measurement. The utility model provides a: a quick permeability test device suitable for low permeability medium which characterized in that: including water supply installation, infiltration appearance, buchner flask, electronic balance and vacuum device. The utility model is suitable for a geotechnical test technique, environment test and appraisal field are particularly useful for the measurement of low permeability medium osmotic coefficient.
Description
Technical field
The utility model is related to a kind of rapid osmotic experimental rig suitable for hypotonicity medium.Suitable for soil test
Technology, environmental judgment field, are particularly suited for the measurement of hypotonicity medium osmosis coefficient.
Background technology
Infiltration coefficient is the important indicator weighed soil body penetration ability and judge soil solidifying speed, is also the weight of the soil body
Want one of physical performance index.The seepage stability sex chromosome mosaicism of soil is soil mechanics and engineering geology question of common concern, even more
Using Vacuum Preloading Method for Consolidation of Soft Soil Foundation focus of attention.According to test principle, hypotonicity method of testing mainly has two big
Class：Constant head test and varying head are tested.
Constant head test applies in general to the test of coarse-grained soil, and varying head test applies in general to fine grained soil.But for
The superfine hypotonicity clay of the particles such as similar kaolin, conventional varying head testing experiment, required test period is longer, estimates water
Head difference is also easy to produce error, and head difference excursion is less, and temperature change is inconsiderate, and hardly possible matches with actual condition.
The content of the invention
The technical problems to be solved in the utility model is：For above-mentioned problem, there is provided a kind of simple structure, measurement
Fast, accurately suitable for the rapid osmotic experimental rig of hypotonicity medium.
The technical scheme that the utility model is adopted is：A kind of rapid osmotic test dress suitable for hypotonicity medium
Put, it is characterised in that：Including water supply installation, permeameter, bottle,suction, electronic balance and negative pressure device；
The permeameter has lid in base, cartridge type side wall and pressure-bearing, and cartridge type sidewalls vertical is placed on base, cartridge type side wall
The standard cutting ring for soil sampling is inside coaxially fitted with, the cartridge type sidewall upper is provided with for closing cartridge type sidewall upper mouth
Cover in pressure-bearing；Soil sample position in the base upper surface correspondence standard cutting ring is formed with intake chamber, and intake chamber Jing inlet openings connect
Water inlet connection on logical base side wall, is equipped with successively filter paper and porous disc, institute between the soil sample and intake chamber in standard cutting ring
State the soil sample position on the lower surface covered in pressure-bearing in correspondence standard cutting ring and be formed with effluent trough, effluent trough Jing apopores connection pressure-bearing
Water outlet joint on the wall of upper lid side, between the soil sample and effluent trough in standard cutting ring porous disc is equipped with；
The delivery port of the water supply installation connects the water inlet connection on the permeameter base, in permeameter pressure-bearing on lid
The connection bottle,suction of water outlet joint Jing connecting tube I, the connection negative pressure device of bottle,suction Jing connecting tubes II, the bottle,suction is placed in electricity
On sub- balance.
The bottle,suction is interior, the delivery port of connecting tube I is equipped with thermometer.
End connection on covering in the pressure-bearing lifts hold-down devices, and the lifting hold-down devices include clamping screw, crossbeam and prop up
Frame, clamping screw is vertically arranged, and clamping screw lower end is rotatably connected in pressure-bearing on lid, and bolt hole, institute are formed with the crossbeam
State clamping screw to be threadedly coupled with crossbeam through bolt hole, crossbeam two ends Jing supports are fixed on the base.
O-shaped sealing collar is provided with the base between the cartridge type side wall lower ends face.
O-ring seal is provided with the pressure-bearing between lid and the standard cutting ring upper surface.
The water supply installation includes water supply bottle and rubber tube, and water supply bottle Jing rubber tubes connect entering on the permeameter base
Water outlet connector.
The negative pressure device is numerical control vavuum pump.
Vacuum table is connected in the connecting tube II.
The beneficial effects of the utility model are：The utility model simple structure, simple and quick, test hypotonicity soil
The infiltration coefficient fast and stable of body, can significantly shorten time of measuring, be particularly well-suited to the survey of the infiltration coefficient of hypotonicity medium
Amount, efficiently solves the problems, such as the gas permeability measurement of the soil body under the effect of high water head pressure.The utility model is provided with negative pressure device,
The permeability test under different suction functions can according to actual needs be carried out, earth and rockfill dam bottom soil body is in difference in simulation Practical Project
Seepage flow situation under the conditions of head difference.
Description of the drawings
Fig. 1 is the structural representation of embodiment.
Fig. 2 is the sectional view of permeameter in embodiment.
Specific embodiment
As shown in figure 1, the present embodiment is a kind of rapid osmotic experimental rig suitable for hypotonicity medium, including water supply
Device, permeameter, bottle,suction 16, electronic balance 18 and negative pressure device 19 (numerical control vavuum pump).
As shown in Fig. 2 permeameter has lid 11 in base 3, cartridge type side wall 8 and pressure-bearing in this example.It is formed with base 3 and cylinder
The circular groove that the size of type side wall 8 is adapted, cartridge type side wall 8 is vertically placed, and it is circular recessed that cartridge type side wall lower ends are placed on base 3
In groove, O-shaped sealing collar 5 is provided between the lower surface of cartridge type side wall 8 on base 3.The top of cartridge type side wall 8 is provided with lid 11 in pressure-bearing,
Lid can be used to close the upper end port of cartridge type side wall 8 in the pressure-bearing, and the upper end of lid 11 is connected to be lifted or pushes in pressure-bearing in pressure-bearing
The lifting hold-down devices of lid, lifting hold-down devices includes clamping screw 13, crossbeam 14 and support 20, and the horizontal positioned of crossbeam 14 is horizontal
The two ends Jing support 20 of beam 14 is fixed on the base 3, and the center of lid 11 is provided with bolt hole, locking screw in correspondence pressure-bearing on crossbeam 14
Bolt 13 is vertically threadedly coupled through the bolt hole of crossbeam 14 with crossbeam 14, and clamping screw lower end is rotatably connected to lid 11 in pressure-bearing
On.
Standard cutting ring 9 can be coaxially inserted in the present embodiment in cartridge type side wall 8, standard cutting ring 9 is used for soil sampling 21.In this example
Soil sample 21 is formed with intake chamber 301 in the corresponding standard cutting ring 9 in the upper surface of base 3, the connection of intake chamber Jing inlet openings 302 base side wall
On water inlet connection 4；Soil sample 21 is formed with effluent trough 1101, water outlet in correspondence standard cutting ring 9 on the lower surface of lid 11 in pressure-bearing
Water outlet joint 12 in the connection pressure-bearing of groove Jing apopores 1102 on the wall of lid side.In this example between soil sample 21 and intake chamber 301 according to
It is secondary to be equipped with filter paper and porous disc 7, be equipped with filter paper and porous disc 7 between soil sample 21 and effluent trough 1101 successively, in pressure-bearing lid 11 with
Standard cutting ring 9 is provided with O-ring seal 10 between upper surface.
On the base 3 corresponding porous disc 7 is formed with the groove 304 for placing porous disc 7, the side wall Jing of the groove in this example
Exhaust outlet joint 24 on the connection base side wall of steam vent 303, exhaust outlet joint is equipped with plug 6 of blocking up.
Water supply installation includes water supply bottle 1 and rubber tube 2, entering on water supply bottle Jing rubber tubes connection base 3 in the present embodiment
Water outlet connector 4, (the organic pressure-bearing pipe of transparent polymer, can hold the Jing connecting tubes I 15 of water outlet joint 12 in permeameter pressure-bearing on lid
It is stressed as >=0.1MPa) connection bottle,suction 16, bottle,suction 16 is interior, the delivery port of connecting tube I 15 is equipped with thermometer 17, by temperature
Meter 17 records experimental situation temperature.16 Jing connecting tubes of bottle,suction II 22 connect negative pressure device 19, and in connecting tube II 22 negative pressure is connected to
Table 23, vacuum table 23 can real-time monitoring negative pressure, feed back negative pressure source information.Bottle,suction 16 is placed in precision for 0.01g by the present embodiment
Electronic balance 18 on.
The course of work of the present embodiment is as follows：
1st, corresponding soil sample 21 has been taken with standard cutting ring 9, in the upper and lower side of soil sample 21 circular filter paper has been sticked；
2nd, vaseline is smeared at the upper end flange of standard cutting ring 9, the standard cutting ring that will be equipped with soil sample is put into the cylinder of permeameter
In type side wall 8；
3rd, porous disc 7 and O-shaped sealing collar 5 are installed in the top of intake chamber 301 of base 3, will be equipped with soil sample 21 and standard ring
The cartridge type side wall 8 of knife 9 is placed on the top of O-shaped sealing collar 5；
4th, the lid 11 on the top of standard cutting ring 9 successively mounting O-shaped sealing ring 10, porous disc 7 and pressure-bearing；
5th, rotation lock bolt 13 moves down lid 11 in pressure-bearing, extrudes O-ring seal 10 and O-shaped sealing collar 5；
6th, install and block up plug 6 and will be equipped with the act of water supply bottle 1 of water to eminence；
7th, the plug 6 of blocking up at exhaust outlet joint 24 is opened, the inside of net porous disc 7 is drained and below in intake chamber 301
Air, closes plug 6 of blocking up；
8th, connecting tube I 15 is inserted into water outlet joint 12；
9th, numerical control vavuum pump and electronic balance 18 are opened；
10th, the digital control case in numerical control vavuum pump arranges corresponding negative pressure；
11st, there is obvious ponding (seepage flow reaches stable state) in bottle,suction 16, and the numerical value of high Accuracy Electronic Balance 18 is bright
Rezero operation and timing are carried out during aobvious increase；
12nd, timing, record water yield and time are stopped after displacement reaches requirement；
13rd, calculation permeability coefficient；
14th, according to Practical Project negative pressure needs, above-mentioned 10th to 13 step operation is repeated.
Vertically be put into after the soil sampling 21 of this example standard cutting ring 9 within the cartridge type side wall 8 of permeameter, the upper and lower side of soil sample 21 according to
Secondary to put filter paper, porous disc 7, permeameter water inlet connection 4 is connected with water supply bottle 1 by rubber tube 2, between water outlet joint 12
Connect numerical control vavuum pump in succession, by the negative pressure value for adjusting vavuum pump, make the upper and lower ends of soil sample 21 there is pressure differential, so make water by
From bottom to top seepage flow is acted in soil sample 21 in pressure differential, full of non-close hole in soil sample, by the unit of account time
The water yield of bottle,suction 16 is flowed into, the infiltration coefficient of hypotonicity medium under different condition of negative pressure can simply, be quickly calculated.
Claims (9)
1. a kind of rapid osmotic experimental rig suitable for hypotonicity medium, it is characterised in that：Including water supply installation, infiltration
Instrument, bottle,suction (16), electronic balance (18) and negative pressure device (19)；
The permeameter has lid (11) in base (3), cartridge type side wall (8) and pressure-bearing, and cartridge type side wall (8) is vertically placed to base
(3) on, the standard cutting ring (9) for soil sampling (21), cartridge type side wall (8) upper end are coaxially fitted with cartridge type side wall (8)
It is provided with for covering (11) in the pressure-bearing for closing cartridge type sidewall upper mouth；Soil in base (3) the upper surface correspondence standard cutting ring
Sample (21) position is formed with intake chamber (301), and intake chamber Jing inlet openings (302) connect the water inlet connection (4) on base side wall,
Filter paper and porous disc (7) are equipped with successively between soil sample (21) and intake chamber (301) in standard cutting ring, and in the pressure-bearing (11) are covered
Lower surface on soil sample (21) position in correspondence standard cutting ring be formed with effluent trough (1101), effluent trough Jing apopores (1102) is even
Water outlet joint (12) in logical pressure-bearing on the wall of lid side, is equipped between the soil sample (21) and effluent trough (1101) in standard cutting ring
Water plate (7)；
The delivery port of the water supply installation connects the water inlet connection (4) on the permeameter base, in permeameter pressure-bearing on lid
Water outlet joint (12) Jing connecting tubes I (15) connection bottle,suction (16), bottle,suction (16) Jing connecting tubes II (22) connection negative pressure
Device (19), the bottle,suction (16) is placed on electronic balance (18).
2. the rapid osmotic experimental rig suitable for hypotonicity medium according to claim 1, it is characterised in that：It is described
Bottle,suction (16) is interior, the delivery port of connecting tube I (15) is equipped with thermometer (17).
3. the rapid osmotic experimental rig suitable for hypotonicity medium according to claim 1 and 2, it is characterised in that：
The connection of (11) upper end is covered in the pressure-bearing and lifts hold-down devices, the lifting hold-down devices include clamping screw (13), crossbeam (14)
With support (20), clamping screw (13) is vertically arranged, and clamping screw lower end is rotatably connected in pressure-bearing to be covered on (11), the crossbeam
(14) bolt hole is formed with, the clamping screw is threadedly coupled through bolt hole with crossbeam, crossbeam (14) two ends Jing supports (20)
It is fixed on the base (3).
4. the rapid osmotic experimental rig suitable for hypotonicity medium according to claim 1, it is characterised in that：It is described
The correspondence porous disc (7) is formed with the groove (304) that size is adapted with porous disc, the side wall Jing rows of the groove on base (3)
Exhaust outlet joint (24) on pore (303) connection connection base side wall, exhaust outlet joint is equipped with plug (6) of blocking up.
5. the rapid osmotic experimental rig suitable for hypotonicity medium according to claim 1, it is characterised in that：It is described
O-shaped sealing collar (5) is provided with base (3) between wall (8) lower surface of the cartridge type side.
6. the rapid osmotic experimental rig suitable for hypotonicity medium according to claim 1, it is characterised in that：It is described
Cover in pressure-bearing between (11) and standard cutting ring (9) upper surface and be provided with O-ring seal (10).
7. the rapid osmotic experimental rig suitable for hypotonicity medium according to claim 1, it is characterised in that：It is described
Water supply installation includes water supply bottle (1) and rubber tube (2), and water supply bottle Jing rubber tubes connect the water inlet connection on the base (3)
(4)。
8. the rapid osmotic experimental rig suitable for hypotonicity medium according to claim 1, it is characterised in that：It is described
Negative pressure device (19) is numerical control vavuum pump.
9. the rapid osmotic experimental rig suitable for hypotonicity medium according to claim 1, it is characterised in that：It is described
Vacuum table (23) is connected in connecting tube II (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621065698.6U CN206161486U (en) | 2016-09-20 | 2016-09-20 | Quick permeability test device suitable for low permeability medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621065698.6U CN206161486U (en) | 2016-09-20 | 2016-09-20 | Quick permeability test device suitable for low permeability medium |
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| Publication Number | Publication Date |
|---|---|
| CN206161486U true CN206161486U (en) | 2017-05-10 |
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ID=58651138
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621065698.6U Active CN206161486U (en) | 2016-09-20 | 2016-09-20 | Quick permeability test device suitable for low permeability medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370580A (en) * | 2016-09-20 | 2017-02-01 | 中国电建集团华东勘测设计研究院有限公司 | Rapid penetration testing device for low-penetrability media |
| CN108051355A (en) * | 2017-12-12 | 2018-05-18 | 中国铁道科学研究院铁道建筑研究所 | One kind newly mixes cement-based material testing permeability device |
| CN110044796A (en) * | 2019-05-15 | 2019-07-23 | 河海大学 | Geotechnical fibre filter performance and multifunctional tester |
| CN112730190A (en) * | 2020-12-18 | 2021-04-30 | 中山大学 | Experimental facility of control by temperature change hyposmosis soil |
-
2016
- 2016-09-20 CN CN201621065698.6U patent/CN206161486U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370580A (en) * | 2016-09-20 | 2017-02-01 | 中国电建集团华东勘测设计研究院有限公司 | Rapid penetration testing device for low-penetrability media |
| CN108051355A (en) * | 2017-12-12 | 2018-05-18 | 中国铁道科学研究院铁道建筑研究所 | One kind newly mixes cement-based material testing permeability device |
| CN110044796A (en) * | 2019-05-15 | 2019-07-23 | 河海大学 | Geotechnical fibre filter performance and multifunctional tester |
| CN112730190A (en) * | 2020-12-18 | 2021-04-30 | 中山大学 | Experimental facility of control by temperature change hyposmosis soil |
| CN112730190B (en) * | 2020-12-18 | 2022-05-20 | 中山大学 | Experimental facility of control by temperature change hyposmosis soil |
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