CN208705202U - A kind of equipment measuring intact loess Unsaturated Hydraulic Conductivity - Google Patents
A kind of equipment measuring intact loess Unsaturated Hydraulic Conductivity Download PDFInfo
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- CN208705202U CN208705202U CN201821429853.7U CN201821429853U CN208705202U CN 208705202 U CN208705202 U CN 208705202U CN 201821429853 U CN201821429853 U CN 201821429853U CN 208705202 U CN208705202 U CN 208705202U
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- native cylinder
- baffle
- dome
- cylinder
- native
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Abstract
The utility model discloses a kind of equipment for measuring intact loess Unsaturated Hydraulic Conductivity, including native cylinder and Markov bottle, native cylinder is used to fill long column type undisturbed soil, the tube head of native cylinder is cutting edge shape cutting ring, baffle of porous baffle is equipped in the pipe tail of native cylinder, there are several apertures on baffle of porous baffle, as penetrating passage, the pipe tail of native cylinder is closed by dome, dome is equipped with inlet opening, one is equipped with inside Markov bottle compared with thin glass tube, the stack shell side of native cylinder several moisture meter connectors side by side, several heat transfer are popped one's head in connectors side by side for the other side, the inlet opening of dome is connected to the bottom of Markov bottle by hose.The utility model has the beneficial effects that large scale intact loess sample can be obtained disposably, keeps infiltration sampling convenient, earth pillar will not be damaged.
Description
Technical field
The utility model belongs to geological technique field, is related to a kind of unsaturated soil permeability coefficient determinator device.
Background technique
The infiltration coefficient of saturated soil comparative maturity in previous research, all kinds of specifications pair such as ground, road and water conservancy
It has had been described in detail；And unsaturated soil cannot use conventional saturated soil test method due to there is the presence of matric suction
Determine its infiltration coefficient, so that there are certain difficulty for the research of unsaturated soil infiltration coefficient, this is also that research unsaturated soil seeps
Saturating characteristic and the biggish one of the main reasons of seepage flow characteristics difficulty.The infiltration coefficient of unsaturated soil not instead of constant, with volume
The variation of the factors such as moisture content, matric suction, most important is the real-time variation for obtaining the soil-water characteristic curve in soil.It is previous to obtain
The infiltration coefficient test apparatus of unsaturated soil is complex, how quickly, accurately, simply implement unsaturated soil infiltration coefficient
Measurement needs to develop more easy test apparatus.How instrument emphasis will obtain large scale undisturbed soil sample, and implement to obtain soil
Water characteristic curve.
Previous unsaturated soil osmotic coefficient investigating sampling equipment, when sampling, are easy to be destroyed earth pillar, and repeatedly sample
So that sampling quality is irregular, to the measurement inaccuracy of earth pillar sample.So developing a kind of large scale intact loess sample
Sampler, and then favourable conditions are provided to measure the Unsaturated Hydraulic Conductivity of intact loess.
Utility model content
The purpose of this utility model is to provide a kind of equipment for measuring intact loess Unsaturated Hydraulic Conductivity, this is practical new
The beneficial effect of type is disposably to obtain large scale intact loess sample, keeps infiltration sampling convenient, will not cause brokenly to earth pillar
It is bad.
Technical solution used by the utility model be include native cylinder and Markov bottle, native cylinder is used to fill long column type original state yellow
Soil, the tube head of native cylinder are cutting edge shape cutting ring, and baffle of porous baffle is equipped in the pipe tail of native cylinder, has several apertures on baffle of porous baffle, as
The pipe tail of penetrating passage, native cylinder is closed by dome, and dome is equipped with inlet opening, and one is equipped with inside Markov bottle compared with thin glass tube, soil
Stack shell side several moisture meter connectors side by side of cylinder, several heat transfer are popped one's head in connectors side by side for the other side, the inlet opening of dome
The bottom of Markov bottle is connected to by hose.
Further, native cylinder is the lucite tube of outer diameter 200mm, internal diameter 186mm, pipe range 1000mm.
Further, Markov bottle height is 2000mm, internal diameter 107.7mm, outer diameter 112.7mm.
Detailed description of the invention
Fig. 1 is the utility model unsaturated soil permeability coefficient determinator device structural schematic diagram.
In figure, 1. native cylinders, 2. cutting rings, 3. baffle of porous baffle, 4. domes, 5. Markov bottles, 6. glass tubes, the connection of 7. moisture meters
Mouthful, 8. heat transfer probe connector, 9. hoses.
Specific embodiment
The utility model is described in detail With reference to embodiment.
The utility model device includes native cylinder 1 and Markov bottle 5 as shown in Figure 1, and native cylinder 1 is used to fill long column type undisturbed soil.Soil
Lucite tube of the cylinder 1 using outer diameter 200mm, internal diameter 186mm, pipe range 1000mm.The tube head of native cylinder 1 is cutting edge shape cutting ring 2,
Tube head is whittled into cutting edge shape using lathe, plays the role of similar Ring-shape cutter.It can polish after cutting edge abrasion, in the pipe tail of native cylinder 1
Equipped with baffle of porous baffle 3, there are several apertures on baffle of porous baffle 3, as penetrating passage, the pipe tail of native cylinder 1 is closed by dome 4, dome 4
It is equipped with inlet opening, after soil sample installs, soil sample front end tiling 1cm thickness normal sand is pressed in normal sand as filtering layer, and by closure plate
On, it is fixed；The pipe tail of native cylinder 1 is closed with dome 4 again.At the end of to infiltration test, dome 4 can be knocked out, native cylinder 1 can weigh
It is multiple to utilize.Water supply device is the Markov bottle 5 processed with machine glass tube, controls head compared with thin glass tube 6 with one inside Markov bottle 5,
Test head height is controlled in 100mm.5 height of Markov bottle is 2000mm, internal diameter 107.7mm, outer diameter 112.7mm.The cylinder of native cylinder 1
Body side several moisture meter connectors 7 side by side, several heat transfer are popped one's head in connectors 8 side by side for the other side.The inlet opening of dome 4 passes through
The bottom of the connection Markov bottle 5 of hose 9.
Domestic moisture meter can be used in test, and volumetric water content precision is ± 2% in 0~50% range.Moisture meter buries
If preceding first demarcate it.Suction measurement selects Americanized Fredlund heat transfer suction sensor, and measuring accuracy is
5%.Suction can be obtained according to the pyroconductivity of actual measurement and the relation curve of the prior pyroconductivity and suction demarcated indoors
?.Each sample is mounted with that 5 moisture meters and 5 heat transfer probes, soil-water that 5 sections can be obtained are special according to 15cm distance
Levy curve.
When moisture meter probe insertion soil sample, to prevent from causing to disturb to soil sample, soil sample structure being avoided to destroy and crack
It generates, the preparatory pore-forming (diameter 3mm) of position electric drill of moisture meter probe tip is installed；It is pre- before heat transfer probe insertion soil sample
First pore-forming, hole diameter are slightly less than heat transfer probe diameter, make probe more preferably contacted with soil sample, moisture meter and heat transfer probe with
Native 1 contact position of cylinder carries out closed processes with paraffin, prevents moisture from flowing out.All devices install, so far permeability test
To carry out.
When wetting front is away from sample water inlet end 90cm, stops the data that supply water and record, knock out dome 4, earth pillar is slow
It is poured out from front end；And earth pillar is cut into the native cake of 3-5cm, it takes 5 boxes native each native cake, is measured using alcohol combustion method aqueous
Rate, and taking its average value is the moisture content of this section of soil sample, the foundation checked as moisture.
The utility model device is accurate for unsaturated soil osmotic coefficient investigating, and equipment is easy to use, easy to carry.
The above is only the better embodiment to the utility model, not makees any form to the utility model
On limitation, all any simple modifications made to embodiment of above according to the technical essence of the utility model are equivalent to become
Change and modify, is all within the scope of the technical scheme of the utility model.
Claims (3)
1. a kind of equipment for measuring intact loess Unsaturated Hydraulic Conductivity, it is characterised in that: including native cylinder and Markov bottle, native cylinder is used
Fill long column type undisturbed soil, the tube head of native cylinder is cutting edge shape cutting ring, baffle of porous baffle is equipped in the pipe tail of native cylinder, is had on baffle of porous baffle
Several apertures, as penetrating passage, the pipe tail of native cylinder is closed by dome, and dome is equipped with inlet opening, is equipped with one inside Markov bottle
Compared with thin glass tube, it is used for Control experiment head, several moisture meter connectors, the other side to be several side by side side by side for the stack shell side of native cylinder
Heat transfer probe connector, the inlet opening of dome pass through the bottom that hose is connected to Markov bottle.
2. according to a kind of equipment for measuring intact loess Unsaturated Hydraulic Conductivity described in claim 1, it is characterised in that: the soil
Cylinder is the lucite tube of outer diameter 200mm, internal diameter 186mm, pipe range 1000mm.
3. according to a kind of equipment for measuring intact loess Unsaturated Hydraulic Conductivity described in claim 1, it is characterised in that: the horse
Family name's bottle height degree is 2000mm, internal diameter 107.7mm, outer diameter 112.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821429853.7U CN208705202U (en) | 2018-09-03 | 2018-09-03 | A kind of equipment measuring intact loess Unsaturated Hydraulic Conductivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821429853.7U CN208705202U (en) | 2018-09-03 | 2018-09-03 | A kind of equipment measuring intact loess Unsaturated Hydraulic Conductivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208705202U true CN208705202U (en) | 2019-04-05 |
Family
ID=65945280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821429853.7U Expired - Fee Related CN208705202U (en) | 2018-09-03 | 2018-09-03 | A kind of equipment measuring intact loess Unsaturated Hydraulic Conductivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208705202U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261283A (en) * | 2019-07-23 | 2019-09-20 | 桂林理工大学 | A kind of device and method measuring unsaturation clay infiltration coefficient |
| CN115935710A (en) * | 2023-01-13 | 2023-04-07 | 水利部交通运输部国家能源局南京水利科学研究院 | Method for calculating permeability coefficient of gravel-doped clay core wall material of core wall rock-fill dam and evaluating seepage safety |
-
2018
- 2018-09-03 CN CN201821429853.7U patent/CN208705202U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261283A (en) * | 2019-07-23 | 2019-09-20 | 桂林理工大学 | A kind of device and method measuring unsaturation clay infiltration coefficient |
| CN115935710A (en) * | 2023-01-13 | 2023-04-07 | 水利部交通运输部国家能源局南京水利科学研究院 | Method for calculating permeability coefficient of gravel-doped clay core wall material of core wall rock-fill dam and evaluating seepage safety |
| CN115935710B (en) * | 2023-01-13 | 2023-07-07 | 水利部交通运输部国家能源局南京水利科学研究院 | Method for calculating permeability coefficient of gravel-doped clay core material of core rock-fill dam and evaluating seepage safety |
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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: 20190405 Termination date: 20190903 |