CN201561922U - In situ precision control permeameter - Google Patents
In situ precision control permeameter Download PDFInfo
- Publication number
- CN201561922U CN201561922U CN2009203166963U CN200920316696U CN201561922U CN 201561922 U CN201561922 U CN 201561922U CN 2009203166963 U CN2009203166963 U CN 2009203166963U CN 200920316696 U CN200920316696 U CN 200920316696U CN 201561922 U CN201561922 U CN 201561922U
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- Prior art keywords
- ring
- permeameter
- displacement rod
- cover plate
- little ring
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to an in situ precision control permeameter which comprises a large ring, a small ring and a dial indicator; the small ring is arranged in the large ring; the upper end of the small ring is provided with a cover plate capable of sealing the small ring; the cover plate is provided with a through hole; a foam board is arranged in the small ring; the foam board is connected with one end of a displacement rod; the displacement rod extends out of the through hole; and the other end of the displacement rod is provided with the dial indicator; the cover plate is provided with a support for fixing the horizontal direction of the displacement rod; and the in situ precision control permeameter has the advantages of economy and applicability, simple operation, precise measurement, reasonable control, larger covered area and the like, and is applicable to industrial production.
Description
Technical field
The utility model relates to a kind of permeameter, and refering in particular to is the smart control of a kind of original position permeameter, is applicable at the scene the infiltration coefficient of the soil body is measured.
Background technology
Infiltration coefficient is an index of concentrated expression soil body penetration ability, and the correct of its numerical value determines that infiltration calculation is had very important meaning.Infiltration coefficient fixes on the indoor or on-the-spot relevant method that all has really, shop experiment is measured the required undisturbed soil of infiltration coefficient, owing in processes such as sampling, transportation, sample preparation, inevitably produce disturbance, perhaps can only use by disturbed soil being carried out later stage preparation back, soil body size is little after the sample preparation, and therefore the soil sample of making can not well reflect the original state soil characteristics.Compare with shop experiment, on-the-spot in-situ test is keeping aspect the soil sample undisturbed soil characteristic unrivaled advantage being arranged.Test in situ commonly used test pits water penetration test, monocycle test, dicyclo test etc., preceding two kinds of test operations are simple, but instrument is more coarse, and the result is very inaccurate; Dicyclo test test findings is more accurate, but when carrying out field test, owing in advance the characteristic of soil infiltration is not understood, perhaps because soil body shrinkage cracking, when infiltrating intensity when big, the Ma Shi bottle must frequent substitution, so very easily produce mistake, and because test area is less than normal, for the bigger soil body of cleavage block area, the dicyclo test has no idea to accomplish to cover fully.Therefore, in conjunction with existing test unit advantage separately, it is very necessary developing a kind of on-the-spot original position infiltration instrument economic and practical, simple to operate, that measurement is accurate, control is reasonable, area coverage is bigger.
The utility model content
The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of original position economic and practical, simple to operate, that measurement is accurate, control is reasonable, area coverage is bigger the smart permeameter of controlling.
The purpose of this utility model is achieved by following technical proposals:
The smart control of a kind of original position permeameter, comprise big ring, little ring, dial gauge, described little ring is arranged in the big ring, the upper end of described little ring is equipped with the cover plate of salable little ring, and described cover plate is provided with through hole, is provided with a cystosepiment in the described little ring, described cystosepiment is connected with an end of displacement rod, described displacement rod stretches out from described through hole, and the other end is equipped with dial gauge, and described cover plate is provided with the support of fixed displacement rod horizontal direction.
In the utility model, the bottom of described big ring is communicated with an end of adjustable pipe, the other end of described adjustable pipe passes through adjuster bar, first strut fixation on support, described first pole can be moved in vertical direction along support, and described adjuster bar is provided with by flexibly connecting second pole that button is connected with described displacement rod.
In the utility model, described little ring diameter is 40cm, and big ring diameter is 75cm.
In the utility model, the range of described dial gauge is 10cm.
Owing to adopt above-mentioned scheme, the utlity model has following advantage:
1, water level can be controlled by adjustable pipe in the big ring, thereby stable, controlled outer shroud head can be provided;
2, big ring can be controlled as required with the water-head in the little ring, thereby makes computation process simpler and more direct;
3, adopt the large scale design: little ring diameter is 40cm, and big ring diameter is 75cm, can make the area coverage of device bigger like this, especially at the soil body with big cleavage block area;
4, at the coarse problem of existing test measurement means, the dial gauge that the smart range of controlling the permeameter employing of original position is 10cm is the Displacement Measurement value with a wide range of precise;
5, little ring has been equipped with cover plate, thereby has reduced the influence of extraneous weather to measuring.
In sum, the utlity model has advantages such as economic and practical, simple to operate, that measurement is accurate, control is reasonable, area coverage is bigger, be suitable for commercial production.
Description of drawings
Figure is a cut-away view of the present utility model.
In the accompanying drawing: 1--water supply bottle, the big ring of 2--, the little ring of 3--, 4--cystosepiment, 5--displacement rod, 6--conduit, 7--dial gauge, 8--support, 9--cover plate, 10--first pole, 11--adjuster bar, 12--adjustable pipe, 13--second pole.
Embodiment
Below in conjunction with accompanying drawing, describe the embodiment of the smart control of original position permeameter in detail.
As shown in the figure, the smart control of a kind of original position permeameter, comprise big ring 2, little ring 3, dial gauge 7, described little ring 3 is arranged in the big ring 2, and the upper end of described little ring 3 is equipped with the cover plate 9 of salable little ring 3, described cover plate 9 is provided with through hole, be provided with a cystosepiment 4 in the described little ring 3, described cystosepiment 4 is connected with an end of displacement rod 5, and described displacement rod 5 stretches out from described through hole, the other end is equipped with dial gauge 7, and described cover plate 9 is provided with the support 8 of fixed displacement rod 5 horizontal directions.
In the utility model, described big ring 2 downsides are communicated with an end of adjustable pipe 12 near the place, bottom, the other end of described adjustable pipe 12 is fixed on the support 8 by adjuster bar 11, first pole 10, described first pole 10 can be moved in vertical direction along support 8, and described adjuster bar 11 is provided with by flexibly connecting button and excellent 5 second poles 13 that are connected of described displacement.Described little ring 3 diameters are 40cm, and encircling 2 diameters greatly is 75cm.The range of described dial gauge 7 is 10cm.Be provided with conduit 6 in the described through hole.
Operation steps of the present utility model is as follows:
(1) experimental field check up table, leveling selected, dig out a recessed annular region with instrument, the recessed degree of depth is 10cm, and annular internal diameter is 40cm, and external diameter is 75cm.
(2) little ring 3 is enclosed within circular island outward to the bottom, with clay end circumferential location back cover in little ring 3, put into cystosepiment 4, displacement rod 5, make displacement rod 5 pass conduit 6 bonnet upper cover plates 9, cover plate 9 upper brackets 8 are fixing in advance, adjust dial gauge 7 positions and return to zero to displacement rod 5 tops.
(3) as required, adjust first pole 10 and adjuster bar 11,,, encircle 2 the also corresponding growth of water level greatly, thereby keep inside and outside head difference constant along with the growth of little ring 3 water levels with regulating and controlling pipe 12 height.
(4) will encircle 2 greatly and be inserted in about 4cm in the annular region, install and secured adjusted pipe 12, and use clay at big ring 2 outer bottom circumferential location back covers.
(5) supply water to big ring 2 by water supply bottle 1, guarantee that adjustable pipe 12 there are flowing out all the time, after water level in the little ring 3 rises, can begin to measure.
(6) use manual time-keeping, measure certain time dial gauge 7 reading; In big ring 2, put into thermometer, the determination test water temperature.
(7) keep the outer shroud head height constant if desired, can adjust first pole 10 and adjuster bar 11 as required, with regulating and controlling pipe 12 height, along with the growth of little ring 3 water levels, it is constant to encircle 2 water level greatly.
(8), can take multiple measurements by regulating the position of dial gauge 7 on support 8 if 5 displacements of displacement rod surpass dial gauge 7 ranges.
(9) observed and recorded:
1. calculation permeability coefficient:
K in the formula
TThe infiltration coefficient of soil sample during-water temperature T ℃; Unit: cm/s,
The recessed degree of depth of L-annular region is a seepage distance, is 10cm herein; Unit: cm,
Big ring of H-and little ring head difference; Unit: cm,
Δ h-displacement rod displacement difference; Unit: cm,
The Δ t-mistiming; Unit: s,
Infiltration coefficient when 2. calculating water temperature and being 20 ℃:
K in the formula
20The infiltration coefficient of soil sample during 20 ℃ of-water temperatures; Unit: cm/s,
k
TThe infiltration coefficient of soil sample when-water temperature is T ℃; Unit: cm/s,
η
TThe coefficient of dynamic viscosity of water in the time of-T ℃; Unit: kPa.s,
η
20The coefficient of dynamic viscosity of water in the time of-20 ℃; Unit: kPa.s, ratio η
T/ η
20Can look into the relation of temperature.
Test data sheet is as follows:
As can be seen, along with carrying out of test, infiltration coefficient reduces from test data sheet, and the infiltration coefficient of soil sample tends towards stability after 25min, can determine soil sample steady seepage coefficient k
20=1.92E-03cm/s.
Claims (5)
1. an original position essence is controlled permeameter, comprise big ring (2), little ring (3), dial gauge (7), it is characterized in that: described little ring (3) is arranged in the big ring (2), the upper end of described little ring (3) is equipped with the cover plate (9) of salable little ring (3), described cover plate (9) is provided with through hole, be provided with a cystosepiment (4) in the described little ring (3), described cystosepiment (4) is connected with an end of displacement rod (5), described displacement rod (5) stretches out from described through hole, the other end is equipped with dial gauge (7), and described cover plate (9) is provided with the support (8) of fixed displacement rod (5) horizontal direction.
2. the smart control of original position according to claim 1 permeameter, it is characterized in that: described big ring (2) downside is communicated with an end of adjustable pipe (12) near the place, bottom, the other end of described adjustable pipe (12) is fixed on the support (8) by adjuster bar (11), first pole (10), described first pole (10) can be moved in vertical direction along support (8), and described adjuster bar (11) is provided with by flexibly connecting second pole (13) that button is connected with described displacement rod (5).
3. the smart control of original position according to claim 1 and 2 permeameter, it is characterized in that: described little ring (3) diameter is 40cm, big ring (2) diameter is 75cm.
4. the smart control of original position according to claim 1 and 2 permeameter, it is characterized in that: the range of described dial gauge (7) is 10cm.
5. the smart control of original position according to claim 1 and 2 permeameter is characterized in that: be provided with conduit (6) in the described through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203166963U CN201561922U (en) | 2009-12-07 | 2009-12-07 | In situ precision control permeameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203166963U CN201561922U (en) | 2009-12-07 | 2009-12-07 | In situ precision control permeameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201561922U true CN201561922U (en) | 2010-08-25 |
Family
ID=42627070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203166963U Expired - Fee Related CN201561922U (en) | 2009-12-07 | 2009-12-07 | In situ precision control permeameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201561922U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252947A (en) * | 2011-07-07 | 2011-11-23 | 西北工业大学 | Special apparatus of method for measuring seepage characteristics, and method for measuring dynamic seepage characteristics of molten metal |
| CN107014739A (en) * | 2017-06-16 | 2017-08-04 | 成都理工大学 | Undisturbed soil infiltration experiment device and the method for measuring infiltration coefficient |
| CN107764713A (en) * | 2017-09-19 | 2018-03-06 | 刘学浩 | The home position testing method of range-adjustable double-ring infiltration device and soil permeability coefficient |
| CN110031380A (en) * | 2019-05-21 | 2019-07-19 | 科利尔环保科技有限责任公司 | A kind of method of scene nondestructive measurement celluar concrete infiltration rate |
-
2009
- 2009-12-07 CN CN2009203166963U patent/CN201561922U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252947A (en) * | 2011-07-07 | 2011-11-23 | 西北工业大学 | Special apparatus of method for measuring seepage characteristics, and method for measuring dynamic seepage characteristics of molten metal |
| CN107014739A (en) * | 2017-06-16 | 2017-08-04 | 成都理工大学 | Undisturbed soil infiltration experiment device and the method for measuring infiltration coefficient |
| CN107014739B (en) * | 2017-06-16 | 2023-09-08 | 成都理工大学 | Undisturbed soil permeability test device and permeability coefficient measurement method |
| CN107764713A (en) * | 2017-09-19 | 2018-03-06 | 刘学浩 | The home position testing method of range-adjustable double-ring infiltration device and soil permeability coefficient |
| CN107764713B (en) * | 2017-09-19 | 2019-12-06 | 刘学浩 | range-adjustable double-ring infiltration device and soil permeability coefficient in-situ test method |
| CN110031380A (en) * | 2019-05-21 | 2019-07-19 | 科利尔环保科技有限责任公司 | A kind of method of scene nondestructive measurement celluar concrete infiltration rate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100825 Termination date: 20111207 |