CN205593891U - A device for testing coarse -grained soil osmotic coefficient - Google Patents
A device for testing coarse -grained soil osmotic coefficient Download PDFInfo
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- CN205593891U CN205593891U CN201620401287.3U CN201620401287U CN205593891U CN 205593891 U CN205593891 U CN 205593891U CN 201620401287 U CN201620401287 U CN 201620401287U CN 205593891 U CN205593891 U CN 205593891U
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- chamber
- grained soil
- coarse
- permeation chamber
- pressure
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Abstract
The utility model discloses a device for testing coarse -grained soil osmotic coefficient relates to water and electricity hydraulic engineering field, and the device includes: infiltration chamber, pressure boost chamber, the base of going to the bottom, controllable pressurization water supply installation, control terminal, wherein, the pressure boost chamber sets up in the top in infiltration chamber, is equipped with the closedtop lid on the pressure boost chamber, and control terminal and controllable pressurization water supply installation link to each other, and controllable pressurization water supply installation links to each other with the pressure boost chamber. Permeating the chamber and setting up on the base of going to the bottom, the infiltration intracavity is equipped with the pad panel, is equipped with delivery port and a plurality of reservation mouth on the infiltration chamber, and the delivery port is located and fills up the panel and go to the bottom between the base, reserves the mouth and is used for connecting the pressure -measuring pipe, infiltration intracavity wall still is equipped with the roughness increases the component. The utility model discloses increased measurable scope, the test to the coarse -grained soil osmotic coefficient that the permeability is good competent completely, and the result is accurate.
Description
Technical field
This utility model relates to water power hydraulic engineering field, a kind of dress for testing coarse-grained soil infiltration coefficient
Put.
Background technology
Coarse-grained soil infiltration coefficient is the flow process vector parameters of a kind of soil water body, oozing of the natural soil body or the engineering soil body
Thoroughly coefficient is as the soil body important mechanical stability influence index during hydro-environmental change, enjoys the pass of engineering circles always
Note.Permeameter is the coarse-grained soil infiltration under certain environment and particular state for the simulated determination nature soil body or the engineering soil body
A kind of device of coefficient, its operation principle is to apply different water pressures at soil body sample two ends so that water body is in soil body sample
Internal mobile, the measuring unit time passes through the discharge of sample cross and records the differential water pressures at sample two ends, and then obtains list
The discharge that bit time is amassed by soil body unit plane of structure.The darcy that its rationale is proposed by French engineer's darcy in 1856
Law, it may be assumed that
V=k·J
Wherein, V is water body flow velocity in the soil body, and k is infiltration coefficient, J be in the soil body in test process relevant 2 it
Between potential energy difference (head difference).
At present engineering commonly uses permeameter and mainly have three kinds: (1) rigid-walled permeameter, its adding according to outside body of water
Pressure mode, is specifically divided into constant head and the tester of two kinds of loading methods of varying head.This device characteristic is simple in construction, behaviour
Facilitating, completely according to classical Darcy's law design, and taken into full account the temperature impact on infiltration, rationale is perfect, can
The infiltration coefficient scope only boundary recorded is in 10-2～10-6cm/s.But coarse-grained soil preferable for water penetration (gravelly soil) oozes
Coefficient determination is inaccurate thoroughly, and owing to the inner wall surface roughness Ra of rigid-walled permeameter is 6.3 μm, at gradation of coarse grained soil
In composition, powder diameter is between 5～75 μm, and cosmid diameter is less than 5 μm, but powder cosmid component content is typically in the range of 5～50%, and
Therefore at sclerine inner surface, form sidewall seepage, therefore it can affect the mensuration to infiltration coefficient.The pressure of such permeameter is
Uncontrollable, as excessive in applied pressure, then cause the fine particle (slity soil, clay soil) a large amount of migrations in soil sample, impact
Test soil mass property, as pressure is the least, then may affect coarse-grained soil real Penetration Signature coefficient.(2) flexible wall formula permeameter, its
Increasing and joined in the outside confined pressure pressue device of sample and sample inside water pressure measurement apparatus, its test philosophy is in advance by specimen enclosure
In the rubber membrane of a flexible wall, and outside rubber membrane, inject pure water, utilize the pressue device examination to being wrapped in rubber membrane
Sample applies certain horizontal radial pressure, Earth Pressure Around under simulation soil body sample certain buried depth state in the wild.Again from sample
Top applies certain hydrostatic pressure, allows liquid pass through sample under certain pressure reduction.By recording the water at the upper and lower two ends of sample
Pressure reduction and the unit interval water yield by sample, calculate soil body osmotic coefficient.This kind of permeameter structure is complicated, to operator
Professional degree require higher, and remain the assessment lacking inwall infiltration to the impact of infiltration coefficient, the size of sample is also subject to
The restriction in equipment confined pressure chamber, the largest particles diameter that can comprise in sample is less.(3) real permeameter is hit, will examination when it is measured
Sample hits reality in the test specimen tube of rigidity, to increase the degree of compaction of soil sample, to reduce the soil sample distance with test specimen tube inwall, at utmost
Ground reduces the sidewall seepage effect in sample process of osmosis.But the limiting factor arranged because of budget in this test is too many, cost
The highest, so this kind of this assay device is the most perfect, practicality is the strongest.
In sum, the test currently for coarse-grained soil infiltration coefficient is primarily present problems with:
1. the tested scope of the infiltration coefficient of existing apparatus is less, the infiltration system of coarse-grained soil preferable for water penetration
Number mensuration is inaccurate.
2., owing to there is the present of inwall seepage, so bigger error can be produced during test, affect the accuracy of result.
Utility model content
The problem existed for above-mentioned prior art, this utility model provides a kind of for testing coarse-grained soil infiltration coefficient
Device.
A kind of device for testing coarse-grained soil infiltration coefficient, including: permeation chamber, booster cavity, base of going to the bottom, controllable compression
Water supply installation, controlling terminal, wherein, booster cavity is arranged at the top of permeation chamber, and booster cavity is provided with closedtop lid, control terminal with
Controllable compression water supply installation is connected, and controllable compression water supply installation is connected with booster cavity；
Permeation chamber is arranged at goes to the bottom on base, is provided with pad panel in permeation chamber, if permeation chamber is provided with outlet and intervenes
Staying mouth, outlet is at pad panel and goes to the bottom between base, and reserved opening is used for connecting pressure-measuring pipe；Permeation chamber inwall is additionally provided with coarse
Degree increases component.
Preferably, controllable compression water supply installation includes: storage tank, water pump, pressure transducer, wherein, and water pump, pressure sensing
Device is connected with controlling terminal, and pressure transducer is for detecting the hydraulic pressure in booster cavity, and water pump is connected with storage tank.
Preferably, also include: the turbine flowmeter being connected with control terminal, turbine flowmeter is used for measuring turnover permeation chamber
Water body amount.
Preferably, also include: the water pressure sensor being connected with control terminal, water pressure sensor is arranged by reserved opening
In sample, thus realizing the stepped change test of osmotic pressure in process of osmosis, the most perfect coarse-grained soil infiltration is surveyed
Examination theory, effectively expands measurable value range.
Preferably, also include: the temperature sensor being connected with control terminal, temperature sensor is arranged at examination by reserved opening
In sample, it is achieved in process of osmosis, variations in temperature measures so that measurement result is more accurate.
Preferably, also include: the photographic head that tests the speed being connected with control terminal, the photographic head that tests the speed is arranged at water outlet.
Preferably, permeation chamber is put together by the curved slab of some pieces of lucites.
Preferably, also include: some Steel Bolt, booster cavity cavity wall, closedtop lid, base of going to the bottom are equipped with some spiral shells
Hole, Steel Bolt connects booster cavity cavity wall and base of going to the bottom by screw；Steel Bolt connects booster cavity cavity wall also by screw
With closedtop lid；Go to the bottom and be provided with support seat of going to the bottom below base.
Preferably, also include: some sealing rings, be respectively arranged at go to the bottom base and permeation chamber connecting place, pad panel and ooze
Chamber connecting place, booster cavity and permeation chamber connecting place, booster cavity and closedtop lid connecting place thoroughly.
Being provided with two chiltern porous discs in permeation chamber, two chiltern porous discs are respectively arranged at the company of permeation chamber and booster cavity
Connect above place and pad panel.
Preferably, roughness increases component is liner sand paper.
Compared with prior art, this utility model has the advantages that
1., by supercharging cavity pressure is precisely controlled, increase measurable value range, can be competent at completely oozing
The test of the coarse-grained soil infiltration coefficient that property is good thoroughly.
2. increase component by roughness and increase the roughness of permeation chamber medial wall of otherwise smooth, it is to avoid because of interior
The measurement error that wall seepage causes.
Accompanying drawing explanation
Fig. 1 is longitudinal sectional drawing of the present utility model.
Fig. 2 is permeation chamber transverse cross-sectional view.
Fig. 3 is Curved plate structure schematic diagram.
Wherein, the parts that in accompanying drawing, labelling is corresponding are entitled: 1-closedtop lid, 2-booster cavity, and 3-booster cavity cavity wall, 4-oozes
Thoroughly chamber, 5-chiltern porous disc, 6-pad panel, 7-goes to the bottom base, and 8-goes to the bottom support seat, 9-curved slab.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings, and embodiment of the present utility model includes
But it is not limited to the following example.
Embodiment
A kind of device for testing coarse-grained soil infiltration coefficient, including: permeation chamber 4, booster cavity 2, base 7 of going to the bottom, controlled
Secondary water supply, control terminal, wherein, booster cavity 2 is arranged at the top of permeation chamber 4, and booster cavity 2 is provided with closedtop lid 1, control
Terminal processed is connected with controllable compression water supply installation, and controllable compression water supply installation is connected with booster cavity 2.Control terminal and refer to control
Make one, complete equipment or the terminal controller of a few complete equipment, be the one being applied to the fields such as automatization, communication, microelectronics
Common apparatus.
Permeation chamber 4 is arranged at goes to the bottom on base 7, be provided with in permeation chamber 4 pad panel 6, if permeation chamber 4 be provided with outlet and
Dry reserved opening, outlet is at pad panel 6 and goes to the bottom between base 7, and reserved opening is used for connecting pressure-measuring pipe；Permeation chamber 4 inwall is also
It is provided with roughness and increases component.
Preferably, controllable compression water supply installation includes: storage tank, water pump, pressure transducer, wherein, and water pump, pressure sensing
Device is connected with controlling terminal, and pressure transducer is for detecting the hydraulic pressure in booster cavity 2, and sends measured result to control
Terminal, controls terminal and can regulate the output of water pump, and then change the pressure in booster cavity 2.Water pump is connected with storage tank,
Water source is provided.
In the present embodiment, also include: the turbine flowmeter being connected with control terminal, turbine flowmeter is used for measuring turnover and oozes
The water body amount in chamber 4 thoroughly.Turbine flowmeter is also commonly used in the art in a kind of device measuring water body amount.
In the present embodiment, also include: the water pressure sensor being connected with control terminal, water pressure sensor passes through reserved opening
Being arranged in sample, thus realize the stepped change test of osmotic pressure in process of osmosis, the most perfect coarse-grained soil oozes
The theory of testing, effectively expands measurable value range thoroughly.
In the present embodiment, also include: the temperature sensor being connected with control terminal, temperature sensor is arranged by reserved opening
In sample, it is achieved in process of osmosis, variations in temperature measures so that measurement result is more accurate.
Also including in the present embodiment: the photographic head that tests the speed being connected with control terminal, the photographic head that tests the speed is arranged at water outlet,
Can complete mensuration pressure threshold defines work.In the present embodiment, permeation chamber 4 is by the curved slab 9 of three pieces of lucites
It is put together, it is possible to take the lucite split of other quantity according to practical situation.Lucite is cheap, and transparency
The highest, contribute to preferably observing the situation within permeation chamber 4.Permeation chamber 4 is the most one-body molded, dismantles and combine the most square
Just.
In the present embodiment, also include: some Steel Bolt, booster cavity cavity wall 3, closedtop lid 1, base 7 of going to the bottom are equipped with
Some screws, Steel Bolt connects booster cavity cavity wall 3 and base 7 of going to the bottom by screw；Steel Bolt connects increasing also by screw
Pressure chamber cavity wall 3 and closedtop lid 1；Go to the bottom and be provided with support seat 8 of going to the bottom below base 7.
In the present embodiment, also include: some sealing rings, be respectively arranged at go to the bottom base 7 and permeation chamber 4 connecting place, pad face
Plate 6 and permeation chamber 4 connecting place, booster cavity 2 and permeation chamber 4 connecting place, booster cavity 2 and closedtop lid 1 connecting place；
Being provided with two chiltern porous discs 5 in permeation chamber 4, two chiltern porous discs 5 are respectively arranged at permeation chamber 4 and booster cavity
Above the junction of 2 and pad panel 6.
In the present embodiment, it is liner sand paper that roughness increases component.
Claims (10)
1. one kind for testing the device of coarse-grained soil infiltration coefficient, it is characterised in that including: permeation chamber (4), booster cavity (2), under
Heelpiece seat (7), controllable compression water supply installation, control terminal, wherein, booster cavity (2) is arranged at the top of permeation chamber (4), supercharging
Chamber (2) is provided with closedtop lid (1), controls terminal and is connected with controllable compression water supply installation, controllable compression water supply installation and booster cavity
(2) it is connected；
Permeation chamber (4) is arranged on base of going to the bottom (7), is provided with pad panel (6) in permeation chamber (4), and permeation chamber (4) is provided with water outlet
Mouth and some reserved opening, outlet is positioned between pad panel (6) and base of going to the bottom (7), and reserved opening is used for connecting pressure-measuring pipe；Infiltration
Chamber (4) inwall is additionally provided with roughness increases component.
A kind of device for testing coarse-grained soil infiltration coefficient the most according to claim 1, it is characterised in that controllable compression
Water supply installation includes: storage tank, water pump, pressure transducer, and wherein, water pump, pressure transducer are connected with control terminal, and pressure passes
Sensor is used for detecting the hydraulic pressure in booster cavity (2), and water pump is connected with storage tank.
A kind of device for testing coarse-grained soil infiltration coefficient the most according to claim 1, it is characterised in that also include:
The turbine flowmeter being connected with control terminal, turbine flowmeter is used for measuring the water body amount of turnover permeation chamber (4).
A kind of device for testing coarse-grained soil infiltration coefficient the most according to claim 1, it is characterised in that also include:
The water pressure sensor being connected with control terminal, water pressure sensor is arranged in sample by reserved opening.
A kind of device for testing coarse-grained soil infiltration coefficient the most according to claim 1, it is characterised in that also include:
The temperature sensor being connected with control terminal, temperature sensor is arranged in sample by reserved opening.
A kind of device for testing coarse-grained soil infiltration coefficient the most according to claim 1, it is characterised in that also include:
The photographic head that tests the speed being connected with control terminal, the photographic head that tests the speed is arranged at water outlet.
A kind of device for testing coarse-grained soil infiltration coefficient the most according to claim 1, it is characterised in that permeation chamber
(4) it is put together by the curved slab (9) of some pieces of lucites.
A kind of device for testing coarse-grained soil infiltration coefficient the most according to claim 1, it is characterised in that also include:
Some Steel Bolt, booster cavity cavity wall (3), closedtop lid (1), base of going to the bottom be equipped with some screws on (7), and Steel Bolt is passed through
Screw connects booster cavity cavity wall (3) and base of going to the bottom (7)；Steel Bolt connects booster cavity cavity wall (3) and closedtop also by screw
Lid (1)；Go to the bottom base (7) lower section be provided with go to the bottom support seat (8).
A kind of device for testing coarse-grained soil infiltration coefficient the most according to claim 1, it is characterised in that also include:
Some sealing rings, be respectively arranged at base of going to the bottom (7) and permeation chamber (4) connecting place, pad panel (6) and permeation chamber (4) connecting place,
Booster cavity (2) and permeation chamber (4) connecting place, booster cavity (2) and closedtop lid (1) connecting place；
Being provided with two chiltern porous discs (5) in permeation chamber (4), two chiltern porous discs (5) are respectively arranged at permeation chamber (4) and increase
The junction of pressure chamber (2) and pad panel (6) top.
A kind of device for testing coarse-grained soil infiltration coefficient the most according to claim 1, it is characterised in that roughness
Increasing component is liner sand paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620401287.3U CN205593891U (en) | 2016-05-05 | 2016-05-05 | A device for testing coarse -grained soil osmotic coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620401287.3U CN205593891U (en) | 2016-05-05 | 2016-05-05 | A device for testing coarse -grained soil osmotic coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205593891U true CN205593891U (en) | 2016-09-21 |
Family
ID=56934089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620401287.3U Expired - Fee Related CN205593891U (en) | 2016-05-05 | 2016-05-05 | A device for testing coarse -grained soil osmotic coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205593891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840990A (en) * | 2016-11-21 | 2017-06-13 | 大连理工大学 | A kind of achievable permeability apparatus for becoming effect of water pressure |
-
2016
- 2016-05-05 CN CN201620401287.3U patent/CN205593891U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840990A (en) * | 2016-11-21 | 2017-06-13 | 大连理工大学 | A kind of achievable permeability apparatus for becoming effect of water pressure |
| CN106840990B (en) * | 2016-11-21 | 2023-07-14 | 大连理工大学 | Osmotic device capable of realizing variable water pressure effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20180505 |
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| CF01 | Termination of patent right due to non-payment of annual fee |