CN209327171U - A kind of experimental provision measuring unsaturated soil infiltration coefficient curve - Google Patents
A kind of experimental provision measuring unsaturated soil infiltration coefficient curve Download PDFInfo
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- CN209327171U CN209327171U CN201822024022.8U CN201822024022U CN209327171U CN 209327171 U CN209327171 U CN 209327171U CN 201822024022 U CN201822024022 U CN 201822024022U CN 209327171 U CN209327171 U CN 209327171U
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- infiltration coefficient
- experimental provision
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- coefficient curve
- unsaturated soil
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Abstract
The utility model discloses a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve, including weighing unit, sample room, liquid-supplying system and data collection systems；Wherein sample room is connected to by rubber tube with liquid-supplying system, and sample room includes chassis and dress sample chamber, and chassis is set at the top of weighing unit, and dress sample chamber is located at the top of chassis, and is fixedly connected with chassis；Data collection system includes moisture meter, tensometer, data collector and computer, in the sample to be tested of moisture meter and tensometer insertion dress sample chamber, data collector is electrically connected with weighing unit, moisture meter, tensometer respectively, and electric signal is sent to computer, by reading moisture content, the matric suction, quality of sample different moments, the infiltration coefficient curve of unsaturated soil is obtained.Above-mentioned experimental provision disclosed by the utility model is easy to operate, measurement accuracy is high, the time is short, the measurement for the various soil properties infiltration coefficient curve in unsaturation that can be encountered suitable for civil engineering.
Description
Technical field
The utility model relates to environmental geotechnical technical field, more particularly to a kind of measurement unsaturated soil seeps
The experimental provision of saturating coefficient curve.
Background technique
Unsaturated soil refers to that soil aperture is filled by water and air, i.e. soil of the saturation degree between 100 and 0, wide
At the earth's surface, the soil major part as crude sedimentation soil, geotechnical engineering project encounter all is unsaturated soil, actual for general distribution
In environmental geotechnical, saturated soil is rarely encountered.During wherein the permeability analysis of the unsaturation soil body is soil body stability evaluation, is native
Pollution liquid migration analysis, soil layer water isolating evaluation basis, it is closely related with the life of the mankind, be related to water conservancy,
All conglomeraties such as environment, traffic, building.
Richards in 1931 is experimentally confirmed unsaturated soil and meets Darcy's law, i.e. the seepage flow speed of unsaturated flow
Degree is directly proportional to total soil water potential, and pass, vertical one-dimensional Richards is distributed with hole in soilIt is public
Formula are as follows:
Wherein, k (θ) is Unsaturated Hydraulic Conductivity, indicates complexity of the fluid by pore framework.
Currently, the method that the measurement of unsaturated soil infiltration coefficient uses can be divided into steady state method and cold store enclosure, wherein stable state
The measurement range of method is smaller and time of measuring is longer, more universal using cold store enclosure measurement unsaturated soil infiltration coefficient.
Therefore, how to provide it is a kind of it is easy to operate, measurement accuracy is high, the short measurement unsaturated soil infiltration coefficient of time of measuring
The problem of experimental provision of curve is those skilled in the art's urgent need to resolve.
Utility model content
In view of this, the present invention provides it is a kind of it is easy to operate, measurement accuracy is high, the time is short, can be suitable for soil
The experimental provision of the various soil properties infiltration coefficient curve determination in unsaturation encountered in wood engineering.
In order to achieve the above object, the utility model adopts the following technical solution:
A kind of experimental provision measuring unsaturated soil infiltration coefficient curve, including weighing unit, sample room, liquid-supplying system and
Data collection system；
Wherein the sample room is connected to by rubber tube with the liquid-supplying system, and the sample room includes chassis and dress sample
Chamber, the chassis are set at the top of the weighing unit, and the dress sample chamber is located at the top of the chassis, and fixes with the chassis
Connection；
The data collection system includes moisture meter, tensometer, data collector and computer, the moisture meter and described
Tensometer be inserted into it is described dress sample chamber sample to be tested in, the data collector respectively with the weighing unit, the moisture meter,
The tensometer electrical connection, and electric signal is sent to the computer, by the moisture content, the matrix that read sample different moments
Suction, quality obtain the infiltration coefficient curve of unsaturated soil.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, the dress sample chamber side wall
It is provided with moisture meter jack and tensometer jack, and close by glass cement in the moisture meter insertion moisture meter jack
Envelope, the tensometer are inserted into the tensometer jack and are sealed by glass cement.
Preferably, in a kind of above-mentioned experimental provision for measuring unsaturated soil infiltration coefficient curve, moisture meter setting
There is one, there are two the tensometer settings, specifically, the quantity of moisture meter and tensometer depends on the height of experimental rig entirety
Degree.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, the weighing unit packet
Include metal plate, lower metal plate and pressure sensor, the pressure sensor be fixedly installed on the upper metal plate and it is described under
Between metal plate, it is connect with the data collector for being set to external, can shows the data of weighing.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, the upper metal plate, institute
The material for stating lower metal plate is aluminium alloy, and aluminium alloy has density of material small, and same volume light weight, intensity is high, not perishable
The advantages of.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, the weighing unit is set
It is equipped with balance regulator.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, on the lower metal plate
Threaded hole is offered, matching setting balancing screw, makes the weighing by the adjusting to the balancing screw in threaded hole
Unit is in horizontality, so that measurement data is more accurate.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, the liquid-supplying system packet
Liquid storage bottle and bracket are included, the liquid storage bottle is set on the height-adjustable bracket, and the liquid storage bottle bottom is arranged
There is liquid outlet, the height control head of liquid storage bottle is adjusted by bracket, is saturated the indoor sample of sample sufficiently.
Preferably, it in a kind of above-mentioned experimental provision for measuring unsaturated soil infiltration coefficient curve, is set at the top of the chassis
It is equipped with groove, permeable stone and filter paper are provided in the groove, the filter paper is located at the top of the permeable stone.Wherein, permeable stone
A horizontal plane can be provided to sample, in addition permeable stone itself can be by moisture, so that sample inside be made to be saturated；Filter
Paper is put on permeable stone, can prevent the indoor sample of sample from entering in permeable stone, is blocked permeable stone, can be prevented permeable stone
Failure guarantees the accuracy of measured experimental data.
Preferably, the groove, described in a kind of above-mentioned experimental provision for measuring unsaturated soil infiltration coefficient curve
Water stone, the geomery of the filter paper are identical.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, the bottom portion of groove is set
It is equipped with screw channel, and the screw channel is divided into different height.
Wherein screw channel and groove are staggered, and screw channel is the cylindric of different-diameter, different height be because
There is certain tilt angle for the bottom surface of groove, low side is connected to benefit discharge outlet, however, to ensure that different cylinders
The upper top surface of shape is in identical height (in order to be horizontally arranged permeable stone), so screw channel is set as different height.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, the groove outer ring is set
Be equipped with sealing ring, preferred rubber sealing ring, the effect of the sealing ring be after chassis and dress sample chamber are screwed connection,
Prevent thering is moisture to flow out in saturation process from the two junction.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, the chassis side is opened
Equipped with discharge outlet is mended, it can both be used to enter liquid, can also be used to discharge liquid, the benefit discharge outlet and the screw channel
Minimum single order connection, the circulation for liquid.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, the dress sample chamber and institute
It states chassis outer ring and is equidistantly provided with fixed screw jack, fixed screw passes through the fixed screw jack, realizes the dress
Sample chamber is sealedly and fixedly connected with the chassis, becomes an entirety.
Preferably, it is above-mentioned it is a kind of measure unsaturated soil infiltration coefficient curve experimental provision in, further include fan, it is described
Fan is equal with the sample room apparent height, specifically refers to that the mesh enclosure minimum altitude of fan is in same with sample chamber surface
Highly.The setting of fan can accelerate the flowing of sample room superficial air, to accelerate the evaporation of sample inside, and wind
The flowing that can accelerate air near sample room is put in fan position, has prevented part wind from not blowing to sample chamber surface.
It can be seen via above technical scheme that compared with prior art, the utility model discloses that provide a kind of measurement non-
The experimental provision of saturated soil infiltration coefficient curve obtains the weight change of whole device by the pressure sensor of weighing unit,
Moisture content and matric suction change curve are obtained by moisture meter, tensometer；Accelerate the evaporation of soil sample to be measured, data by fan
Collector connection computer analyzes data, and easy to operate, measurement accuracy is high, and the utility model is suitable for civil engineering
The measurement of the various soil properties infiltration coefficient in unsaturation encountered.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 attached drawing is the overall structure diagram of the utility model；
Fig. 2 attached drawing is the left view of the utility model sample room；
Fig. 3 attached drawing is the right view of the utility model sample room；
Fig. 4 attached drawing is the top view on the utility model chassis.
In figure:
1 be liquid storage bottle, 2 be liquid outlet, 3 be rubber tube, 4 be mend discharge outlet, 5 be groove, 6 be chassis, 7 be fixed spiral shell
Silk, 8 be rubber seal, 9 be permeable stone, 10 be moisture meter, 11 be tensometer, 12 be fill sample chamber, 13 be fan, 1401 be on
Metal plate, 1402 be lower metal plate, 15 be pressure sensor, 16 be balancing screw, 17 be data collector, 18 be calculating
Machine, 19 be bracket, 20 be moisture meter jack, 21 be tensometer jack, 22 be filter paper, 23 be fixed screw jack.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model embodiment disclose it is a kind of it is easy to operate, measurement accuracy is high, the time is short, building work can be suitable for
The experimental provision of the various soil properties infiltration coefficient curve determination in unsaturation encountered in journey.
Referring to attached drawing, the utility model provides a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve, including
Weighing unit, sample room, liquid-supplying system and data collection system；
Wherein sample room is connected to by rubber tube 33 with liquid-supplying system, and sample room includes chassis 66 and dress sample chamber 1212, bottom
Disk 66 is set at the top of weighing unit, and dress sample chamber 12 is located at 6 top of chassis, and is fixedly connected with chassis 6；
Data collection system includes moisture meter 10, tensometer 11, data collector 17 and computer 18, moisture meter 10 and
In the sample to be tested of the insertion dress sample chamber 12 of power meter 11, data collector 17 is electric with weighing unit, moisture meter 10, tensometer 11 respectively
Connection, and electric signal is sent to computer 18.
In order to further optimize the above technical scheme, dress 12 side wall of sample chamber is provided with moisture meter jack 20 and tensometer jack
21, and moisture meter 10 is inserted into moisture meter jack 20 and is sealed by glass cement, and tensometer 11, which is inserted into tensometer jack 21, to be led to
Cross glass cement sealing.
In order to further optimize the above technical scheme, moisture meter 10 is provided with one, and there are two the settings of tensometer 11.
In order to further optimize the above technical scheme, weighing unit includes upper metal (aluminium alloy) plate, lower metal plate 1402
With pressure sensor 15, pressure sensor 15 is fixedly installed between metal plate 1401 and lower metal plate 1402, and is set to
External data collector 17 connects, and can show the data of weighing.
In order to further optimize the above technical scheme, weighing unit is provided with balance regulator.
In order to further optimize the above technical scheme, threaded hole is offered on lower metal plate 1402, matching is set in threaded hole
Balancing screw 16 is set, so that weighing unit is in horizontality by the adjusting to balancing screw 16.
In order to further optimize the above technical scheme, liquid-supplying system includes liquid storage bottle 1 and bracket 19, and liquid storage bottle 1 is set to
On height-adjustable bracket 19, and 1 bottom of liquid storage bottle is provided with liquid outlet 22, and liquid storage bottle 1 is adjusted by bracket 19
Height control head, is saturated the indoor sample of sample sufficiently.
In order to further optimize the above technical scheme, fluted 5 are arranged at the top of chassis 6, permeable stone 9 is provided in groove 5
With filter paper 22, filter paper 22 is located at 9 top of permeable stone.
In order to further optimize the above technical scheme, groove 5, permeable stone 9, the geomery of filter paper 22 are identical.
In order to further optimize the above technical scheme, 5 bottom of groove is provided with screw channel, and screw channel is divided into not
Same height.
In order to further optimize the above technical scheme, it is additionally provided with rubber seal 8 in groove 5,
In order to further optimize the above technical scheme, 6 side of chassis, which offers, mends discharge outlet 4, can both be used to enter liquid
Body can also be used to discharge liquid, mends discharge outlet 4 and is connected to the minimum single order of screw channel, the circulation for liquid.
In order to further optimize the above technical scheme, dress sample chamber 12 and 6 outer ring of chassis are equidistantly provided with fixed screw
Jack 23, fixed screw 7 pass through fixed screw jack 23, and realization dress sample chamber 12 is sealedly and fixedly connected with chassis 6, becomes
One entirety.
In order to further optimize the above technical scheme, it is provided with fan 13 right above sample room, for accelerating the steaming of sample
Hair.
Soil sample is packed into dress sample chamber, is plugged moisture meter and opens by the utility model fixed screw connection dress sample chamber and chassis
Power meter is saturated sample by the height that bracket adjusts liquid storage bottle to control head, and opening sample room benefit discharge outlet makes sample room
Interior moisture is no longer flowed out to moisture under the effect of gravity, is closed and is mended discharge outlet, and fan is opened, and accelerates soil sample surface evaporation.Using
Above-mentioned experimental provision can measure the infiltration coefficient curve of unsaturated soil by the data in acquisition soil sample evaporation process.
Specifically, passing through infiltration coefficient of the experimental provision to unsaturated soil of said determination unsaturated soil infiltration coefficient curve
The method that curve is measured is as follows:
(1) will put one piece of permeable stone 9 identical with 5 diameter of groove above chassis 6, be laid with above permeable stone 9 one with thoroughly
The identical filter paper 22 of 9 size of water stone, rubber seal 8 in groove 5, consolidated by fixed screw 7 by chassis 6 and dress sample chamber 12
It is fixed, to realize the sealing of the two, an entirety is become, sample to be tested is put into sample room, is inserted into moisture meter 10 and open
Power meter 11, is sealed with glass cement.
(2) weighing unit is connected to computer 18, by data collection system moisture meter 10 and tensometer 11 pass through
Data line and computer 18 connect.
(3) fan 13 is connected to computer 18, so that fan 13 is directed at the sample room upper surface for filling in soil sample, reaches acceleration
The effect of soil sample evaporation to be measured.
(4) liquid storage bottle of water system 1 is connect with sample room by rubber tube 3, liquid storage bottle 1 is adjusted by bracket 19
Height control head be saturated sample sufficiently, after sample saturation after, disconnect liquid storage bottle 1 and sample room connection, in soil sample table
Face plastic covering film allows extra moisture in soil sample to be freely discharged under gravity, after example weight is stablized, closes
Discharge outlet 4 is mended in sample room, opens plastic film, opens fan 13.
(5) its certain time interval is controlled by the capture program of computer 18 and reads a number, obtain moisture content at this time,
The song of coefficient of permeability K is obtained by calculation to obtain the curve of above-mentioned parameters in the quality of soil matrix suction and device
Line.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve, which is characterized in that including weighing unit, sample room,
Liquid-supplying system and data collection system；
Wherein the sample room is connected to by rubber tube (3) with the liquid-supplying system, and the sample room includes chassis (6) and dress sample
Chamber (12), the chassis (6) are set at the top of the weighing unit, and the dress sample chamber (12) is located at the top of the chassis (6), and
It is fixedly connected with the chassis (6)；
The data collection system includes moisture meter (10), tensometer (11), data collector (17) and computer (18), described
In moisture meter (10) and the sample to be tested of the tensometer (11) insertion dress sample chamber (12), the data collector (17) point
It is not electrically connected with the weighing unit, the moisture meter (10), the tensometer (11), and electric signal is sent to the calculating
Machine (18).
2. a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve according to claim 1, which is characterized in that institute
Stating weighing unit includes upper metal plate (1401), lower metal plate (1402) and pressure sensor (15), the pressure sensor
(15) it is fixedly installed between the upper metal plate (1401) and the lower metal plate (1402).
3. a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve according to claim 2, which is characterized in that institute
It states weighing unit and is additionally provided with balance regulator.
4. a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve according to claim 1, which is characterized in that institute
Stating liquid-supplying system includes liquid storage bottle (1) and bracket (19), and the liquid storage bottle (1) is set to the height-adjustable bracket (19)
On, and the liquid storage bottle (1) bottom is provided with liquid outlet (2).
5. a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve according to claim 1, which is characterized in that institute
It states and fluted (5) is set at the top of chassis (6), be provided with permeable stone (9) and filter paper (22), the filter paper in the groove (5)
(22) it is located at the top of the permeable stone (9).
6. a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve according to claim 5, which is characterized in that institute
It states groove (5) bottom and is provided with screw channel, and the screw channel is set as different height.
7. a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve according to claim 5, which is characterized in that institute
It states groove (5) outer ring and is provided with sealing ring (8).
8. a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve according to claim 6, which is characterized in that institute
It states chassis (6) side and offers benefit discharge outlet (4), benefit discharge outlet (4) is connected to the minimum single order of the screw channel.
9. a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve according to claim 1, which is characterized in that institute
It states dress sample chamber (12) and the chassis (6) outer ring is equidistantly provided with fixed screw jack (23), fixed screw (7) passes through institute
It states fixed screw jack (23), realization dress sample chamber (12) is sealedly and fixedly connected with the chassis (6).
10. a kind of experimental provision for measuring unsaturated soil infiltration coefficient curve according to claim 1, which is characterized in that
It further include fan (13), the fan (13) is equal with the sample room apparent height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822024022.8U CN209327171U (en) | 2018-12-04 | 2018-12-04 | A kind of experimental provision measuring unsaturated soil infiltration coefficient curve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822024022.8U CN209327171U (en) | 2018-12-04 | 2018-12-04 | A kind of experimental provision measuring unsaturated soil infiltration coefficient curve |
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| Publication Number | Publication Date |
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| CN209327171U true CN209327171U (en) | 2019-08-30 |
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| CN201822024022.8U Expired - Fee Related CN209327171U (en) | 2018-12-04 | 2018-12-04 | A kind of experimental provision measuring unsaturated soil infiltration coefficient curve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342296A (en) * | 2018-12-04 | 2019-02-15 | 山东科技大学 | A kind of experimental provision measuring unsaturated soil infiltration coefficient curve |
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2018
- 2018-12-04 CN CN201822024022.8U patent/CN209327171U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342296A (en) * | 2018-12-04 | 2019-02-15 | 山东科技大学 | A kind of experimental provision measuring unsaturated soil infiltration coefficient curve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 Termination date: 20211204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |