CN108776209A - A kind of system tested for vacuum saturation and saturation degree - Google Patents
A kind of system tested for vacuum saturation and saturation degree Download PDFInfo
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- CN108776209A CN108776209A CN201810359919.8A CN201810359919A CN108776209A CN 108776209 A CN108776209 A CN 108776209A CN 201810359919 A CN201810359919 A CN 201810359919A CN 108776209 A CN108776209 A CN 108776209A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 13
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 239000004576 sand Substances 0.000 claims description 56
- 238000012545 processing Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 24
- 229960004424 carbon dioxide Drugs 0.000 description 10
- 230000008859 change Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 229920006395 saturated elastomer Polymers 0.000 description 7
- 239000002689 soil Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 101000774560 Crotalus atrox Zinc metalloproteinase-disintegrin-like VAP1 Proteins 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- -1 repeatedly 5 Chemical compound 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
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Abstract
The present invention relates to the systems for vacuum saturation and saturation degree test, including vacuum saturation device；Constant head device；Vacuum pump；Carbon dioxide air delivery device and saturation measuring device；Vacuum saturation device includes sample vacuum tank, the sample container being arranged in sample vacuum tank and the pressure gauge being arranged on sample vacuum tank；Saturation measuring device is arranged on vacuum saturation device；Constant head device body, constant head water inlet pipe and the constant head outlet pipe that constant head device includes constant head vacuum tank, is arranged in constant head vacuum tank, constant head device body includes inner cylinder, outer barrel, the disengaging water pump for connecting inner barrel and outer barrel, and constant head water inlet pipe and outlet pipe are connected to across constant head vacuum tank with inner cylinder；Vacuum pump is connected to vacuum saturation device and constant head device；The appendix of carbon dioxide air delivery device is connected to across sample vacuum tank with sample container, while being connected to constant head device, and constant head outlet pipe is connected to across sample vacuum tank with sample container.
Description
Technical field
The present invention relates to centrifugal modeling technology more particularly to a kind of systems tested for vacuum saturation and saturation degree.
Background technology
When solving geological problem related with all kinds of engineering constructions, it is necessary to understand the engineering geology of ground, native engineering
Geologic property includes physics, water reason and mechanical property, and wherein physical property is to show certain properties of native physical state, with soil
Basic physical index indicate that in these indexs some is directly measured such as water content, density, proportion, volume, some is logical
Calculating is crossed to acquire such as saturation degree.The saturation degree of soil refers to the ratio of water accounts in soil body hole volume and soil body pore volume
Value indicates the degree that water is full of in hole.Saturation degree can reflect the dry and wet degree and property of soil, in Practical Project
It has great significance.For geotechnical engineering liquefaction, native saturation degree is to differentiate the important indicator of sand liquefaction, saturation degree
Test is of great significance always.
The measurement of saturation degree is mainly obtained by calculating indirectly, and is calculated and usually generated due to various factors partially
Difference.Currently, for model experiment, there are no the test methods of relevant saturation degree.
Accordingly, there exist the demands of the technology to this respect.
Invention content
To overcome above-mentioned technical problem of the existing technology, the present invention provides one kind for vacuum saturation and saturation degree
The method and system of test, can measure sand saturation degree, have simple to operate, the reliable advantage of visual result.
According to another aspect of the present invention, a kind of system tested for vacuum saturation and saturation degree is provided, including：
Vacuum saturation device 10；Constant head device 20；Vacuum pump 30；And carbon dioxide air delivery device 40, and saturation
Spend measuring device 60；
Wherein, vacuum saturation device 10 include sample vacuum tank 11, be arranged in sample vacuum tank 11 sample container 12,
And the pressure gauge 14 being arranged on sample vacuum tank 11；
Saturation measuring device 60 includes laser emitter 61, and saturation measuring device 60 is arranged in vacuum saturation device 10
On；
Constant head device 20 includes constant head vacuum tank 21, the constant head device body being arranged in constant head vacuum tank 21
22, constant head water inlet pipe 23 and constant head outlet pipe 24；Wherein constant head device body 22 include inner cylinder 221, outer barrel 222,
The disengaging water pump 223 of inner cylinder 221 and outer barrel 222 is connected, constant head water inlet pipe 23 and constant head outlet pipe 24 pass through constant head
Vacuum tank 21 is connected to inner cylinder 221；
Vacuum pump 30 is connected to vacuum saturation device 10 and constant head device 20；
The appendix of carbon dioxide air delivery device 40 is connected to across sample vacuum tank 11 with sample container 12, constant head water outlet
Pipe 24 is connected to across sample vacuum tank 11 with sample container 12.Simultaneously carbon dioxide air delivery device 40 appendix also with constant head
Device 20 is connected to.
Further, the constant head device 20 further includes the pressure gauge being arranged on constant head vacuum tank 21.
Further, the constant head device 20 further includes the intake pump 25 being connect with constant head water inlet pipe 23.
Further, the inside of the sample vacuum tank 11 above sample container 12 is arranged in the saturation measuring device 60
On top surface.
Further, it is provided with switching device on the sample vacuum tank 11.
Further, the system for measuring sand saturation degree further includes data processing unit 50, at the data
Unit is managed to receive the detection data of saturation measuring device 60 and calculate sand saturation degree accordingly.
An embodiment according to the present invention, the saturation measuring device 60 are arranged in 12 internal side wall of sample container
On, the vacuum saturation device 10 further includes the kickboard 15 with a scale among being placed on sample container 12.
Further, the top surface of the sample vacuum tank 11 is transparent or is provided with observation window on the top.
Further, the constant head device 20 further includes that the flowmeter being arranged on constant head outlet pipe (24) (does not show
Go out), for measuring to the sample saturation water that water head equipment 20 exports often.
According to another aspect of the present invention, a kind of method measuring sand saturation degree is provided, including：
(1) the sand sample that volume is V is put into sample container, while sand sample and constant head device taken out true
It is empty.
(2) carbon dioxide is passed through to the sand sample and constant head device that vacuumize,
(3) step (1) and (2) is repeated repeatedly,
(4) while to sand sample and constant head device it vacuumizes；
(5) constant head saturation is carried out to sand sample using constant head device, until aqueous submerges the surface of sand sample；
(6) the sand sample after being saturated constant head is exposed under normal atmosphere P1；
(7) sand sample is evacuated down under P2 pressure again；
(8) measuring and calculating in step (6) and (7) under different pressures in sample container liquid level variation, and thus obtain
Obtain the variation △ V of volume；
(9) the saturation degree Sr of sand sample is calculated using following formula：
Sr=Vw/Vv100%
Vv=Va+Vw
Vv=V-Vs=V-Ms/ ρd
VaP1=V2P2
V2=Va+ △ V
Wherein, V is the total volume of sand sample, and Vv is pore volume in sand sample, and Vw is the body of water in sand sample
Product, Vs are solid volume in sand sample, and Va is that gas volume, V2 are step (7) in sand sample under P1 pressure in step (6)
Gas volume in sand sample under middle P2 pressure, Ms are the solid masses of sand sample, ρdFor the dry density of sand sample.
Further, step (8) detects liquid level including the use of the saturation measuring device including laser generator
Change △ h, and multiply the floor space S in the sample container using △ h, obtains the variation △ V of volume.
Further, step (8) emits incident light, detection including the use of the saturation measuring device including laser generator
Then incident light utilizes tan α △ L, obtains liquid level in the variation △ L of the horizontal direction distance of liquid level incoming position
Change △ h, wherein α is incidence angle of the incident light relative to liquid level.
Further, step (8) emits incident light including the use of the saturation measuring device including laser generator, vertically
It is incident on liquid level, the variation △ h of liquid level is measured using reflected light.
Further, step (8) and (9) are completed by computer program element.
Description of the drawings
Fig. 1 is the structural representation for vacuum saturation and the system of saturation degree test according to one embodiment of the invention
Figure；
Fig. 2 is to be shown according to the structure of the constant head device (constant head vacuum tank is not shown) of one embodiment of the invention
It is intended to；
Fig. 3 is the flow diagram according to the method for the measurement sand saturation degree of one embodiment of the invention；
Fig. 4 is to detect liquid level in sample container using saturation measuring device according to one embodiment of the invention
Variation schematic diagram；
Fig. 5 is according to solid-liquid-gas three phase schematic diagram in sand sample in the sample container of one embodiment of the invention；
Fig. 6 is the schematic diagram according to gas volume and pressure change in the sand sample of one embodiment of the invention.
Specific implementation mode
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.It should be noted that in the absence of conflict, in embodiments herein and embodiment
Feature can be combined with each other.
Fig. 1 is the structural representation for vacuum saturation and the system of saturation degree test according to one embodiment of the invention
Figure.With reference to figure 1, vacuum of the invention saturation and saturation degree test system include：Vacuum saturation device 10, constant head device 20,
Vacuum pump 30, carbon dioxide air delivery device 40 and data processing unit 50 and saturation degree including laser generator 61 are surveyed
Measure device 60 (referring to Fig. 4).
As shown, vacuum saturation device 10 includes sample vacuum tank 11, the sample being arranged in sample vacuum tank 11 appearance
Device 12 and the pressure gauge 14 being arranged on sample vacuum tank 11.
Sample container 12 generally has well-regulated shape for filling sand sample to be detected, for example, can be cuboid,
Cube or cylinder etc. it is possible thereby to understand its length, width and height in advance, and (can utilize water by detecting liquid level therein
After being saturated) variation acquire the variation of volume.The top surface of sample container 12 is generally open, is thus conducive to sample
Placement and the setting (if being disposed thereon) of saturation measuring device 60 and detection.Sample container 12 is placed on sample
In vacuum tank 11, the position of placement does not specially require, as long as it is placed and fixes.Sample container 12 is in bottom surface or side
Face, which is provided with, to be connected with the constant head outlet pipe 24 of the gas tube of carbon dioxide air delivery device 40 and constant head device 20
Interface (not shown), it is possible thereby to be inflated to sample and water-filling.
Sample vacuum tank 11 is for content sample container 12 and for being vacuumized to sample container 12.Its shape and material
It does not require particularly, as long as it is suitable for vacuumizing, such as can be made of transparent organic material.Sample vacuum tank 11
On pressure gauge can be installed, for showing the pressure in sample vacuum tank 11, such as pressure value after evacuation.Sample
Be provided in vacuum tank 11 allow carbon dioxide air delivery device 40 gas tube and 24 phase of constant head outlet pipe by through-hole (not
It shows).As the interface of sample container 12, sealing can be realized between such through-hole and gas tube and water pipe, will not be oozed
Permeable or gas.
Saturation measuring device 60 including laser emitter 61 is used to detect the liquid level after sample water-filling saturation
And the variation of volume, such as such saturation measuring device 60 can be arranged in sample container 12, as shown in Figure 4.It is full
It is arranged in the side wall upper part of sample container 12 with degree measuring device 60, with a scale float is also provided in sample container 12
Ruler 15.The length of float meter 15 can be almost the same with sample container 12, but can be with the variation of liquid level in sample container 12
And change, such as rise or fall.As shown in figure 4, laser emitter 61 can (incident light be relative to liquid with α at an angle
The incidence angle in face) in transmitting laser to sample container 12 on liquid level on float meter 15, scale is provided on float meter 15 it is possible thereby to remember
Record the numerical value of incoming position.When liquid level rises (or decline), float meter 15 changes therewith, and the incoming position of incident light is also therewith
Variation.It is possible thereby to which the incoming position for obtaining incident light changes front and back difference L and further obtains the variation △ of liquid level
h。
The acquisition of such difference L can be identified and calculated by laser measurer itself, can also pass through human eye
Observation.Such as the top surface of the sample vacuum tank 11 can be transparent or be provided with observation window on the top, thus
Incoming position and changing value can be determined by the observation of human eye.
Certainly, the saturation measuring device 60 including laser emitter 61 can also be arranged in vacuum saturation device 10
Other component on, such as on sample vacuum tank 11.The sample above sample container 12 can be arranged in saturation measuring device 60
In the inside top surface of product vacuum tank 11.In this way laser measurer emit incident light, vertical incidence on liquid level, using reflected light come
Measure the variation △ h of liquid level.Such laser measurer is well known to those skilled in the art, and is not described in detail herein.
In addition, being also provided with switching device (not shown), such as switch valve on the sample vacuum tank 11.To sample
When product vacuum tank 11 draws sky, the device can be closed, the device can be opened when not needing vacuum, thus is exposed to
Under normal pressure.
With reference to figure 1, constant head device 20 includes constant head vacuum tank 21, the constant head being arranged in constant head vacuum tank 21
Device body 22, constant head water inlet pipe 23, constant head outlet pipe 24 and the intake pump 25 being connect with constant head water inlet pipe 23.Two
The appendix of carbonoxide air delivery device 40 is also connected to constant head device (20) simultaneously, such as by constant head vacuum tank 21, even
The leakproofness of connection should be kept when logical.It in addition can also be in the setting pressure gauge on constant head vacuum tank 21, described in monitoring
The vacuum condition of constant head device 20.
With reference to figure 2, Fig. 2 is the constant head device (constant head vacuum tank is not shown) according to one embodiment of the invention
Structural schematic diagram.Wherein constant head device body 22 include inner cylinder 221, outer barrel 222, connection inner cylinder 221 and outer barrel 222 into
Water outlet pump 223, constant head water inlet pipe 23 and constant head outlet pipe 24 are connected to across constant head vacuum tank 21 with inner cylinder 221, even
The leakproofness of connection should be kept when logical；Constant head outlet pipe 24 is connected with the sample container 12 of vacuum saturation device 10.
When operation, water constantly enters inner cylinder 221 under the action of intake pump 25 by water inlet pipe 23, in inner cylinder 221
Water spills into outer barrel 222 after excessive, and the water in outer barrel 222 is circulated back to inner cylinder 221 by passing in and out the effect of water pump 223
In.Thus the head holding in inner cylinder 221 is stablized constant.
Vacuum pump 30 is connected to the vacuum tank 21 of the vacuum tank 11 of vacuum saturation device 10 and constant head device 20, titanium dioxide
Carbon air delivery device 40 is also connected to the vacuum tank 11 of constant head device 20 and vacuum saturation device 10 simultaneously, can be to the two simultaneously
It is vacuumized or is inflated.Such as constant head device 20 and vacuum saturation device 11 are carried out at the same time and vacuumized and simultaneously
Inflation, it is ensured that the adequacy of saturation keeps the stabilization of head when sand is saturated, and can eliminate constant head device 20
The middle saturation gas dissolved in water improves accuracy of detection.
As shown in Figure 1, the system of the present invention can also include data processing unit 50.Data processing unit 50 can receive
The detection data that the saturation measuring device 60 transmits, and handled, to calculate the saturation of relevant parameter and sand
Degree.Such as wirelessly transmitting data, data processing unit can be carried out between data processing unit 50 and saturation measuring device 60
50 are handled and export final result.
The process and operation principle that the saturation degree detection of sand sample is carried out using the system of the present invention is explained in detail below.
Fig. 3 is the flow diagram according to the method for the measurement sand saturation degree of one embodiment of the invention；
With reference to figure 3, the method according to the present invention for measuring sand saturation degree is saturated vacuum first with vacuum pump 30 and fills
It sets 10 to be vacuumized, namely sand sample is vacuumized, while constant head device 20 is vacuumized, utilize dioxy later
It is 20 transport of carbon dioxide of sand sample and constant head device to change carbon air delivery device 40, such as reaches normal pressure, is then repeated
State the step of vacuumizing and leading to carbon dioxide, such as repeatedly 5,6,7 etc. number.Constant head is filled followed by vacuum pump 30
Set 20 and vacuum saturation device 10 while vacuumizing, utilize under vacuum conditions later constant head device 20 to sand sample into
Row constant head is saturated, until the water surface did not had sample surfaces (with reference to figure 4).It after saturation, will be on the sample vacuum tank 11
Switching device (not shown) such as switch valve is opened, and sample is thus allowed to be exposed under normal pressure (P1).Then sample is taken out again
For vacuum to certain pressure, for example, P2, P2 can be 1/2,1/5,1/10,1/20 etc. of P1.In the process, packet is utilized
The saturation measuring device 60 for including laser generator 61 measures under different pressures such as P1 and P2 incident light in liquid level incoming position
Horizontal direction distance variation △ L, then utilize tan α △ L, obtain the variation △ h of liquid level, wherein α is incident light
Relative to the incidence angle (with reference to figure 4) of liquid level, or using include laser generator 61 saturation measuring device 60 emit into
Light is penetrated, vertical incidence measures the variation △ h of liquid level using reflected light on liquid level.Then change is obtained using △ h × S
The volume △ V of change, wherein S is the floor space of sample container 12.
Illustrate that the principle of the measurement of the present invention, Fig. 5 are the sample according to one embodiment of the invention below in conjunction with the accompanying drawings
Solid-liquid-gas three phase schematic diagram in sand sample in container；Fig. 6 is according to gas in the sand sample of one embodiment of the invention
The schematic diagram of volume and pressure change.
With reference to figure 5 and Fig. 6, generally there are hole in sand sample, hole is by water and gas institute in the sample after saturation
It occupies, as shown in Figure 6.According to Boyle's law, under conditions of quality is certain, temperature-resistant, the pressure of gas and volume
The value of product (i.e. pV) is constant.Therefore for saturation after, for gas contained in sand sample, it is above-mentioned fixed to substantially conform to
Rule, that is, there are P1 × V1=P2 × V2, wherein P1 is normal pressure, and P2 is the pressure after vacuumizing, and V2-V1=△ V are (referring to attached
Fig. 6).Note that basic for pressure P2 of the pressure relative to normal atmosphere or after vacuumizing caused by liquid level due to water
Do not consider that pressure change caused by fluid change, influence can be ignored when can be ignored, therefore calculating.
In above process, the variation V2-V1=△ V of volume can be obtained by △ h × S, further according to above formula P1 × V1
=P2 × V2, (wherein P1 is normal pressure, and about 101.325kPa, P2 are the pressure after vacuumizing, it is known that), therefore V1 can be calculated
Value, that is, sample other gas V1 (being hereinafter also denoted as Va) for being included under normal pressure after saturation.
In the saturation degree definition for combining soil, the saturation degree Sr of above-mentioned sand sample can be calculated.Specific formula for calculation is as follows：
Sr=Vw/Vv100% saturation degree definitions
Vv=Va+Vw
Vv=V-Vs=V-Ms/ ρ d
Wherein, V is the total volume of sand sample, and Vv is pore volume in sand sample, and Vw is the body of water in sand sample
Product, Vs are solid volume in sand sample, and Va (V1) is that gas volume, V2 are sand under P2 pressure in sand sample under P1 pressure
Gas volume in sample, Ms are the solid masses (dry weight) of sand sample, and ρ d are the dry density of sand sample.
Wherein, V, Ms, ρ d can be carried out by conventional methods measurement before detecting saturation degree, these methods are
It is well known in the art, therefore be not described in detail.
Above-mentioned calculating can be carried out by artificial or computer, such as the system of the present invention may include data processing
Unit 50, wherein it includes the saturation degree of laser generator 61 that storage, which has designed software module, the reception of data processing unit 50,
After the detection data that measuring device 60 is transmitted, you can calculate saturation degree.
The a certain sand sample of systematic survey of embodiment-utilization present invention
Sand sample is fitted into the sample container 12 of vacuum saturation device 10, using the device of the invention to sample and
Constant head device is vacuumized and filling CO 2, altogether three times；
Sand sample and constant head device are vacuumized again, then sand sample is carried out using constant head device normal
Head is saturated, until aqueous submerges the surface of sand sample；
Then the sand sample after constant head being saturated is exposed under normal atmosphere P1；
Sand sample is evacuated down under P2 (about 2/1 P1) pressure again；
Laser are emitted to calculate different pressures for 5.71 ° with incident angle α using saturation measuring device 60
The variation of liquid level in lower sample container, and thus calculate the variation of volume；Finally calculate saturation degree.
Experiment condition and result：The initial high 50cm of sand, void ratio 1, laser light incident angle α are 5.71 °, and P1 is about
101.325kPa, P2 1/2P1, laser light incident position displacement distance △ L are 36.5mm, lifting height 3.65mm, saturation degree
Be calculated is 97.08%.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two
More than.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of system tested for vacuum saturation and saturation degree, including：
Vacuum saturation device (10)；Constant head device (20)；Vacuum pump (30)；Carbon dioxide air delivery device (40), and saturation
Spend measuring device (60)；
Wherein, vacuum saturation device (10) includes the sample container of sample vacuum tank (11), setting in sample vacuum tank (11)
(12) and pressure gauge (14) on sample vacuum tank (11) is set；
Saturation measuring device (60) includes laser emitter (61), and saturation measuring device (60) is arranged in vacuum saturation device
(10) on；
Constant head device (20) includes the constant head device sheet of constant head vacuum tank (21), setting in constant head vacuum tank (21)
Body (22), constant head water inlet pipe (23) and constant head outlet pipe (24)；Wherein constant head device body (22) includes inner cylinder
(221), outer barrel (222), connection inner cylinder (221) and outer barrel (222) disengaging water pump (223), constant head water inlet pipe (23) and
Constant head outlet pipe (24) is connected to across constant head vacuum tank (21) with inner cylinder (221)；
Vacuum pump (30) is connected to vacuum saturation device (10) and constant head device (20)；
The appendix of carbon dioxide air delivery device (40) is connected to across sample vacuum tank (11) with sample container (12), at the same with it is normal
Water head equipment (20) is connected to；Constant head outlet pipe (24) is connected to across sample vacuum tank (11) with sample container (12).
2. the system according to claim 1 tested for vacuum saturation and saturation degree, wherein the constant head device
(20) further include the pressure gauge being arranged on constant head vacuum tank (21).
3. the system according to claim 1 tested for vacuum saturation and saturation degree, wherein the constant head device
(20) further include the intake pump (25) being connect with constant head water inlet pipe (23).
4. the system according to claim 1 tested for vacuum saturation and saturation degree, wherein the saturation degree measures dress
In the inside top surface for setting the sample vacuum tank (11) that (60) are arranged above sample container (12).
5. the system according to claim 1 tested for vacuum saturation and saturation degree, wherein the sample vacuum tank
(11) switching device is provided on.
6. the system according to claim 1 tested for vacuum saturation and saturation degree, further includes data processing unit
(50), the data processing unit receives the detection data of saturation measuring device (60) transmission and calculates sand saturation accordingly
Degree.
7. according to claim 1 go back for vacuum saturation and the system of saturation degree test, the constant head device (20)
Including the flowmeter being arranged on constant head outlet pipe (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810359919.8A CN108776209B (en) | 2018-04-20 | 2018-04-20 | System for be used for vacuum saturation and saturation test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810359919.8A CN108776209B (en) | 2018-04-20 | 2018-04-20 | System for be used for vacuum saturation and saturation test |
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| CN108776209B CN108776209B (en) | 2021-12-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221040A (en) * | 2019-05-27 | 2019-09-10 | 中国地震局工程力学研究所 | A kind of equipment for the detection of sand saturation degree |
| CN110221039A (en) * | 2019-05-27 | 2019-09-10 | 中国地震局工程力学研究所 | A kind of sales kit (SK) for the detection of sand saturation degree |
Citations (6)
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| CN110221039A (en) * | 2019-05-27 | 2019-09-10 | 中国地震局工程力学研究所 | A kind of sales kit (SK) for the detection of sand saturation degree |
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