CN206583772U - A kind of device that infiltration coefficient is quickly measured based on variable water level method - Google Patents
A kind of device that infiltration coefficient is quickly measured based on variable water level method Download PDFInfo
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- CN206583772U CN206583772U CN201720248850.2U CN201720248850U CN206583772U CN 206583772 U CN206583772 U CN 206583772U CN 201720248850 U CN201720248850 U CN 201720248850U CN 206583772 U CN206583772 U CN 206583772U
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- cylinder
- head
- water filling
- draining
- water
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Abstract
The utility model discloses a kind of device that infiltration coefficient is quickly measured based on variable water level method, including water filling cylinder, determine head cylinder, draining cylinder and disc base, the water filling cylinder, determine head cylinder and draining cylinder is arranged concentrically on disc base, water filling barrel diameter, which is less than, determines head barrel diameter, head barrel diameter is determined less than draining barrel diameter, and water filling cylinder is highly higher than head cylinder height is determined, head cylinder is determined highly higher than draining cylinder height；The bottom surface of water filling cylinder, which is provided with above aperture, aperture, is provided with a metafiltration sand net, and the side of draining cylinder is provided with osculum, and osculum is connected with drainpipe；Because the volume of water filling cylinder, which is more than, determine the volume of head cylinder, injecting cylinder body is interior to be filled with water more in head cylinder than determining, so that flowing through the water of sand sample will increase, that is, extends test period；Structure of the present utility model is integrated, without assembling, and profile is exquisite and is easy to carry.
Description
Technical field
The utility model belongs to soil test engineering device technique field, more particularly to a kind of quickly measured based on variable water level method is oozed
The device of saturating coefficient.
Background technology
Infiltration coefficient is an index of concentrated expression soil body penetration ability, and the correct determination of its numerical value has to infiltration calculation
Very important meaning.The assay method of soil permeability coefficient is a lot, is generally divided into constant head and varying head：The former is applied to
The big coarse-grained soil of water penetration, such as gravel and sand；The latter is applied to the small fine grained soil of water penetration, such as silt and clay.Carefully
Grain soil flows through the total Water very little of soil sample due to infiltration coefficient very little, seepage flow, is difficult Accurate Determining；Or determine total Water when
Between need very long, can be become larger by evaporation and the experimental error that is influenceed of temperature change, it is necessary to use varying head THROUGH METHOD.
Varying head test method(s) is exactly head difference time to time change always in process of the test, during experiment in transparent plastic cylinder
Soil pattern is loaded, water flows through soil sample from bottom to top from a graduated glass tube of upright band and U-tube., will during experiment
Glass tube, which is filled with water to, to be needed after height, starts stopwatch, and beginning head difference is remembered in survey, after certain time, then surveys note end of a period head difference,
By setting up instantaneous Darcy's law, you can calculate infiltration coefficient.And when determining the infiltration coefficient of sand with variable water level method, because of sand
The seepage discharge of soil causes greatly the time of experiment very short very much, so that the infiltration coefficient calculated is very inaccurate, and existing sample
Apparatus structure is complicated, and not portable.
The content of the invention
The purpose of this utility model is to provide that a kind of low-profile is portative quickly to measure infiltration based on variable water level method
The device of coefficient.
The purpose of this utility model is achieved through the following technical solutions：
A kind of device that infiltration coefficient is quickly measured based on variable water level method, including water filling cylinder, determine head cylinder, adjutage
Body and disc base, the water filling cylinder, determine head cylinder and draining cylinder is arranged concentrically on disc base, and water filling cylinder is straight
Footpath be less than determine head barrel diameter, determine head barrel diameter be less than draining barrel diameter, and water filling cylinder highly be higher than determine head
Cylinder height, determines head cylinder highly higher than draining cylinder height；The bottom surface of water filling cylinder, which is provided with above aperture, aperture, is provided with one
Metafiltration sand net, the side of draining cylinder is provided with osculum, and osculum is connected with drainpipe.
Further, the water filling cylinder is provided with scale value.
Further, the water filling cylinder, to determine head cylinder, draining cylinder and disc base be organic clear glass system
Into.
The utility model has the advantages that：
1st, it is filled with water because the volume of water filling cylinder is more than in the volume for determining head cylinder, injecting cylinder body than determining head
It is many in cylinder, so that flowing through the water of sand sample will increase, that is, extend test period.
2nd, scale value is provided with water filling cylinder, testing crew can fast and effectively read change of water level value, measure infiltration
Coefficient.
3rd, structure of the present utility model is integrated, without assembling, and profile is exquisite and is easy to carry.
Brief description of the drawings
Fig. 1 is cross-sectional view of the present utility model.
Fig. 2 is overlooking the structure diagram of the present utility model.
Marked in figure：1-water filling cylinder, 2-determine head cylinder, 3-draining cylinder, 4-disc base, 5-aperture,
6-filter sand net, 7-osculum.
Embodiment
As shown in Figure 1 and Figure 2, the device that infiltration coefficient is quickly measured based on variable water level method that the present embodiment is provided, including note
Water drum body 1, determine head cylinder 2, draining cylinder 3 and disc base 4, the water filling cylinder 1, determine head cylinder 2 and draining cylinder 3
It is arranged concentrically on disc base 4, the diameter of water filling cylinder 1, which is less than, determines the diameter of head cylinder 2, determines the diameter of head cylinder 2 and is less than
The diameter of draining cylinder 3, and water filling cylinder 1 height higher than the height of head cylinder 2 determine, determine the height of head cylinder 2 and be higher than adjutage
The height of body 3, the bottom of water filling cylinder 1 is provided with aperture 5, the water in water filling cylinder 1 is flowed into and determine in head cylinder 2, aperture 5
Top is provided with a metafiltration sand net 6, filters sand, it is to avoid sand, which is flowed into, to be determined in head cylinder 2, is provided with the side wall of draining cylinder 3
Osculum 7, osculum 7 is connected with drainpipe, the water for determining the spilling of head cylinder 2 is quickly discharged.
In order to which testing crew can fast and effectively read change of water level value and be easy to observation, the water filling cylinder 1 is provided with
Scale value, and water filling cylinder 1, determine head cylinder 2, draining cylinder 3 and disc base 4 and be made of transparent organic glass.
Use flow of the present utility model：First filter sand net 6 is placed on the aperture 5 of the bottom of water filling cylinder 1, then will be fixed
Water is filled in head cylinder 1, is then loaded sand sample layering in water filling cylinder 1, uniform compaction during loading treats that sand sample is installed, amount
Sand sampling height L；Followed by the water filling into water filling cylinder 1, a period of time is stood, the initial height of head in record water filling cylinder 2
Spend H0, in process of the test, the water level in water filling cylinder 1 is gradually reduced, and it is fixed that the water in water filling cylinder 1 is entered by small hole at bottom part seepage flow
In head cylinder 2 so that determine to spill into draining cylinder 3 after the water of head cylinder 2 is full, then discharged by osculum 7；Treat under water level
When being down to the drawdown value H being pre-designed, the time is recorded.
It is described above be only the utility model preferred embodiment, but protection domain of the present utility model is not limited to
This, any transformation carried out based on technical scheme provided by the utility model and inventive concept and replacement should all be covered in this reality
With in new protection domain.
Claims (3)
1. a kind of device that infiltration coefficient is quickly measured based on variable water level method, it is characterised in that：Including water filling cylinder, determine head cylinder
Body, draining cylinder and disc base, the water filling cylinder, determine head cylinder and draining cylinder is arranged concentrically on disc base,
Water filling barrel diameter, which is less than, determines head barrel diameter, determines head barrel diameter less than draining barrel diameter, and water filling cylinder is highly
Higher than head cylinder height is determined, head cylinder is determined highly higher than draining cylinder height；The bottom of water filling cylinder is provided with aperture, aperture
Top is provided with a metafiltration sand net, and the side of draining cylinder is provided with osculum, and osculum is connected with drainpipe.
2. the device according to claim 1 that infiltration coefficient is quickly measured based on variable water level method, it is characterised in that：The note
Water drum body is provided with scale value.
3. the device according to claim 1 that infiltration coefficient is quickly measured based on variable water level method, it is characterised in that：The note
Water drum body, to determine head cylinder, draining cylinder and disc base be made of transparent organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720248850.2U CN206583772U (en) | 2017-03-15 | 2017-03-15 | A kind of device that infiltration coefficient is quickly measured based on variable water level method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720248850.2U CN206583772U (en) | 2017-03-15 | 2017-03-15 | A kind of device that infiltration coefficient is quickly measured based on variable water level method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206583772U true CN206583772U (en) | 2017-10-24 |
Family
ID=60111949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720248850.2U Expired - Fee Related CN206583772U (en) | 2017-03-15 | 2017-03-15 | A kind of device that infiltration coefficient is quickly measured based on variable water level method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206583772U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115290533A (en) * | 2022-08-05 | 2022-11-04 | 水利部交通运输部国家能源局南京水利科学研究院 | Centrifugal model test device and method for simulating soil body permeation |
| CN115308110A (en) * | 2022-08-09 | 2022-11-08 | 河南省地质调查院 | Method and device for measuring permeability coefficient of variable water head |
-
2017
- 2017-03-15 CN CN201720248850.2U patent/CN206583772U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115290533A (en) * | 2022-08-05 | 2022-11-04 | 水利部交通运输部国家能源局南京水利科学研究院 | Centrifugal model test device and method for simulating soil body permeation |
| CN115308110A (en) * | 2022-08-09 | 2022-11-08 | 河南省地质调查院 | Method and device for measuring permeability coefficient of variable water head |
| CN115308110B (en) * | 2022-08-09 | 2024-01-30 | 河南省地质调查院 | Variable water head permeability coefficient determination method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20190315 |