CN205898837U - Thin sight flow field observation device during liquefaction in granule hole - Google Patents
Thin sight flow field observation device during liquefaction in granule hole Download PDFInfo
- Publication number
- CN205898837U CN205898837U CN201620748105.XU CN201620748105U CN205898837U CN 205898837 U CN205898837 U CN 205898837U CN 201620748105 U CN201620748105 U CN 201620748105U CN 205898837 U CN205898837 U CN 205898837U
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- CN
- China
- Prior art keywords
- quartz glass
- pressure
- liquefaction
- sample container
- glass sample
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000008187 granular material Substances 0.000 title abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 113
- 239000011148 porous material Substances 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 22
- 239000012528 membrane Substances 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 239000008188 pellet Substances 0.000 claims description 22
- 239000011521 glass Substances 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000010453 quartz Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 239000012266 salt solution Substances 0.000 abstract 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 14
- 239000011780 sodium chloride Substances 0.000 description 14
- 239000011324 bead Substances 0.000 description 7
- 239000004576 sand Substances 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 239000004793 Polystyrene Substances 0.000 description 3
- 239000005356 container glass Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a thin sight flow field observation device during liquefaction in granule hole, taking place container, water pressure monitoring system, liquefaction including liquefaction and taking place container fixing device, move pressure controller, laser particle speed sensor, the container takes place and includes quartz glass sample container and pressure transmission mechanism for liquefaction, places quartz glass ball and salt solution sample in the quartz glass sample container, and two cavities are kept apart into to pressure transmission mechanism interior rubber membrane, and one of them cavity is continuous with quartz glass sample container, another cavity with move pressure controller and be connected, water pressure monitoring system contains two pore water pressure meter, and one of them pore water pressure meter is placed in quartz glass sample container, another pore water pressure meter place with move the cavity that pressure controller is connected in, move pressure controller and pass through pressure transmission mechanism for quartz glass ball in the quartz glass sample container and salt solution sample notes pressure. The utility model discloses a mechanism research of carefully seeing the flow field during liquefaction provides an observation device.
Description
Technical field
Thin sight flow field in pellet pores when this utility model belongs to a kind of geotechnical study field, more particularly, to liquefaction
Observation device.
Background technology
Saturation loosening sand ground can liquefy under seismic loading, macroscopically shows as soil body mesopore hydraulic pressure
Power rises, and the effective contact stress of soil body solid phase is zero simultaneously, and at this moment soil mass property similar to fluid and loses shearing strength.Ground
Shake liquefaction causes following harm: such as inclined building, settlement of foundation, subway tunnel floating, road foundation sliding etc..Traditional sand
Soil liquefaction observation mainly passes through shaketalle test and dynamic triaxial tests, but macroscopical water pressure is only monitored in these tests, lacks liquid
The thin observation method seeing flow field between granule during change.Therefore in order to further investigate the thin sight mechanism of liquefaction further, need a kind of liquid
Thin sight flow observation device in pellet pores during change.
Utility model content
In order to overcome existing apparatus cannot observe the thin problem seeing flow field during liquefaction, this utility model provides this utility model
A kind of thin sight flow observation device in pellet pores during liquefaction.
The technical solution of the utility model: the thin sight flow observation device in pellet pores during a kind of liquefaction, including liquefaction
Generation container, water pressure monitoring system, liquefaction generation container fixing device, dynamic pressure force controller, laser particle speed measuring device, described
Liquefaction generation container includes quartz glass sample container and pressure transferred structure, places quartz in described quartz glass sample container
Glass bead and saline sample, the interior rubber membrane of described pressure transferred structure is isolated into two chambers, one of chamber and quartz
Glass specimen container is connected, and another chamber is connected with dynamic pressure force controller；Described water pressure monitoring system comprises two holes
Hydraulic pressure gauge, one of ventage piezometer is placed in quartz glass sample container, the quartzy glass specimen container endoparticle of test
Between pore water pressure, another ventage piezometer is placed on the within the chamber being connected with dynamic pressure force controller, tests dynamic pressure control
The hydrodynamic pressure value that device processed provides, described dynamic pressure force controller passes through pressure transferred structure to the stone in quartz glass sample container
English glass bead and saline sample injection pressure.
Preferably, described liquefaction generation container fixing device is experimental apparatus fixed mount, for fixing liquefaction generation container,
Two chambers are respectively first chamber and second chamber, and described first chamber is connected with quartz glass sample container, and described second
Chamber is connected with dynamic pressure force controller；Two ventage piezometers are respectively the first ventage piezometer and the second ventage piezometer, institute
State among the sample that the first ventage piezometer is placed in quartz glass sample container, described second ventage piezometer is placed on
Two within the chambers.
Preferably, described quartz glass sample container top is provided with circular lid, and described circular lid has a circular hole,
The electric wire of the first ventage piezometer is worn in public from circular hole and is connected with data acquisition unit, then is connected with computer.
Preferably, described quartz container, circular lid, pressure transferred structure are made by quartz glass.Wherein stone
English glass specimen its external diameter 112mm, wall thickness 2mm, high 155mm.The external diameter 500mm of pressure transferred structure, wall thickness 2mm, height
900mm.
Preferably, with hose connection, rubber membrane is placed on tripping power and passes for described pressure transferred structure and dynamic pressure force controller
Pass at mechanism top 30mm, quartz glass sample container and dynamic pressure force controller are isolated and formed two chambers, described pressure
Controller injection pressure is to pressure transferred structure to quartz glass sample container voltage supply.
Preferably, the Circularhole diameter in described circular lid is 10mm, and circular hole is from the circular lid of quartz glass sample container
Sub- outermost edge 15mm, the mean diameter of described quartz glass ball is 1mm.
Preferably, described first pore pressure gauge is placed on away from quartz glass sample container opening 30mm, the first hole
Gap WG is also 30mm with a distance from the outer wall of quartz glass sample container, and described second pore pressure gauge is placed on tripping
At the 30mm of force transfer mechanism bottom.
The observation procedure of the thin sight flow observation device in pellet pores during a kind of liquefaction, comprises the steps:
Step 1: put into the second pore pressure gauge in pressure transferred structure；
Step 2: quartz glass ball and saline sample are poured in quartz glass sample container；
Step 3: place the first ventage piezometer in quartz glass sample container sample；
Step 4: equably pour laser particle in the quartz glass ball of quartz glass sample container and saline sample top layer
The trace particle polystyrene of speed measuring device, then covers round-meshed circular lid to quartz glass sample container, two
The electric wire of pore pressure gauge all wears out from the circular hole circular lid, is connected with data acquisition unit, then with computer even
Connect；
Step 5: quartz glass sample container is fixed with experimental apparatus fixed mount；
Step 6: the second chamber in pressure transferred structure is filled water and is connected with pressure controller with flexible pipe, Ran Houshe
Pressure value in level pressure force controller, then pressure controller by certain speed with one inhale one pressure in the way of transmit pressure, this
When second chamber in water accept pressure controller offer pressure, and by extrude rubber membrane by pressure transmission give the first chamber
Room, first chamber is communicated with quartz glass sample container, thus by pressure transmission to the quartzy glass in quartz glass sample container
Glass ball and saline sample；
Step 7: when the dynamic pressure force value of two pore pressure gauges is equal, then the quartzy glass in quartz glass sample container
Glass ball and saline sample liquefy；
Step 8: connect tracing particle device, open tracing particle device, carry out the thin sight in pellet pores
Flow observation.
Preferably, in described step 1, the second pore pressure gauge puts into tripping at the opening of quartz glass sample container
At the 30mm of force transfer mechanism bottom, at tripping force transfer mechanism top 30mm, then place rubber membrane；Quartz in described step 2
Glass bead is deposited with sand rain method；Then flat mouth formula hourglass is adopted to load in quartz glass sample container by quartz glass ball, by sand
The lower section of leakage presses close to quartz glass sample container bottom just, starts knockout deposition, along one end of quartz glass sample container
Side is at the uniform velocity poured into the other end of glass, until filling quartz glass ball in quartz glass quartz container；Certain with graduated cylinder amount
The saline of amount, saline is slowly poured in the quartz glass filling quartz glass ball, until saline and quartz glass ball mixing
Thing is parallel with the top bead of quartz glass sample container；Quartz glass sample container is measured with gage in described step 3, and
, use when quartz glass ball sample is placed at line with stroke one diatom away from quartz glass sample container opening 30mm
Gage measures 30mm with the direction of opening parallel at the opening of quartz glass sample container, then puts the first pore pressure cell
Put and from quartz glass sample container opening 30mm, in the quartz glass ball sample away from outer wall 30mm, then proceeding to place stone
English glass bead sample；The interface that in described step 6, second chamber bottom is connected with pressure controller is a diameter of 10mm, a height of
The cylinder of 10mm.
Preferably, described laser particle speed measuring device include laser system, digital camera devices, power supply box, lock unit and
Computer, described laser system is radiated on the sample in liquefaction generation container device at a certain time interval, digital camera
The cooperation of equipment and laser system carries out photograph taking, then picture data is delivered to computer, finally according to not remembering in the same time
The trace particle displacement diagram picture of record carries out data analysiss and can draw the flow velocity in pellet pores.
Laser particle speed measuring device in this utility model is with shooting the thin sight flow field in record and analysis pellet pores.Swash
The trace particle polystyrene of light particle speed measuring device is 0.64l, and its mean diameter is 10 μm of particle diameters, and density is 1 050 kg
/m3 .
The beneficial effects of the utility model are to overcome existing apparatus to observe the thin problem seeing flow field during liquefaction, are sand
During soil liquefaction, thin sight flow observation experiment provides a kind of novel device.
Brief description
Fig. 1 is integral assembling structure schematic diagram of the present utility model；
Fig. 2 is the structural representation that quartz glass sample container of the present utility model is connected with pressure transferred structure；
Fig. 3 is the structural representation of this utility model circular lid；
The structural representation of Fig. 4 position liquefaction of the present utility model generation container fixing device；
In figure 1. quartz glass sample container, 2. pressure transferred structure, 3. rubber membrane, 4. first chamber, 5. second chamber,
6. the first pore pressure cell, 7. experimental apparatus fixed mount, 8. data acquisition unit, 9. dynamic pressure power apparatus, 10. digital camera devices,
11. laser systems, 12. power supply boxs, 13. lock units, 14. computers, 15. second pore pressure cells, 16. circular lid, 17. circles
Hole, 18. interfaces.
Specific embodiment
In order that technological means, character of innovation, reached purpose and effect that this utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and this utility model is expanded on further.
As in Fig. 1 liquefy when pellet pores in thin sight flow observation device, experimental provision include liquefy generation container dress
Put, water pressure monitoring system and device, dynamic pressure control device, laser particle speed measuring device.Described liquefaction generation container device bag
Include quartz glass sample container 1, pressure transferred structure 2.Quartz glass sample container 1 fills quartz glass ball and saline sample.
There are first chamber 4 and second chamber 5, two chambers rubber membrane 3 is isolated, and this rubber membrane can transmit in pressure transferred structure 2
Water pressure between two chambers, wherein first chamber 4 are connected with quartz glass sample container 1, second chamber 5 and dynamic pressure control
Device 9 processed is connected.Described water pressure monitoring system and device includes the first pore pressure gauge 6 and the second pore pressure gauge 15, and first
Pore pressure gauge 6 is placed among the sample in quartz glass sample container 1, the stone in the quartzy glass specimen container 1 of test
Pore water pressure between English glass bead, the second pore pressure gauge 15 is placed on the second chamber being connected with dynamic pressure force controller 9
Interior, the hydrodynamic pressure value that test dynamic pressure force controller 9 provides, measured pore water pressure and dynamic pressure force controller 9 are provided
Pressure is compared, and judges whether the sample in quartz glass sample container 1 reaches liquefaction condition.Two pore pressure gauges 6
Circular hole 17 from the circular lid 16 of quartz glass sample container 1 for the electric wire wear in public, be connected with data acquisition unit 8.Institute
Stating liquefaction generation container fixing device is experimental apparatus fixed mount 7.Described dynamic pressure force controller 9 and pressure transferred structure 2 are with soft
Pipe connects, and pressure controller 9 injection pressure to pressure transferred structure 2 gives quartz glass sample container 1 voltage supply.Described laser particle tests the speed
Device includes digital camera devices 10, laser system 11, power supply box 12, lock unit 13, computer 14, laser particle speed measuring device
With shooting and analyzing the thin sight flow field in pellet pores.
The work process of the thin sight flow observation device in pellet pores during this utility model liquefaction is as follows:
Step 1: put into the second pore pressure gauge 15 in pressure transferred structure 2 as shown in Figure 1.Specifically comprise the following steps that
Second pore pressure gauge 15 enters at tripping force transfer mechanism 2 bottom 30mm at the opening of quartz glass sample container 1, so
Rubber membrane 3 is placed afterwards at tripping force transfer mechanism 2 top 30mm.
Step 2: put into quartz glass summation saline sample in quartz glass sample container 1 as shown in Figure 1.Concrete steps
As follows: to deposit quartz glass ball with sand rain method.Load quartz glass ball in flat mouth formula hourglass, the lower section of hourglass is pressed close to stone just
English glass specimen container 1 bottom, starts to deposit, the end edge along quartz glass sample container 1 is at the uniform velocity poured into glass
The other end, until fill quartz glass ball in quartz glass quartz container 1；With a certain amount of saline of graduated cylinder amount, by saline slowly
Pour in the quartz glass filling quartz glass ball, until saline and quartz glass ball mixture and quartz glass sample container
1 the top bead is parallel.
Step 3: place the first ventage piezometer 6 in quartz glass sample container 1 sample as shown in Figure 1.Concrete step
Suddenly as follows: to measure the quartz glass sample container 1 of Fig. 1 with gage, and using pen away from quartz glass sample container 1 opening 30mm
Standardized diatom, when quartz glass ball sample is placed at line, with gage at the opening of quartz glass sample container 1 with open
30mm is measured in mouthful parallel direction, then by the first pore pressure cell 6 be placed on from quartz glass sample container 1 opening 30mm,
In the quartz glass ball sample away from outer wall 30mm, then proceed to place quartz glass ball sample.
Step 4: the sample top layer of the quartz glass sample container 1 shown in Fig. 1 is equably poured laser particle into and tested the speed dress
The trace particle polystyrene put, then covers the circular lid 16 with circular hole 17, two holes to quartz glass sample container 1
The electric wire of gap WG 6 from circular lid 16 circular hole 17 wear out, be connected with data acquisition unit 8.
Step 5: quartz glass sample container 1 is fixed with experimental apparatus fixed mount 7.
Step 6: the second chamber 5 in the pressure transferred structure 2 in Fig. 1 is filled water and with flexible pipe and pressure controller 9
Connect, its interface is a diameter of 10mm, the cylinder of a height of 10mm.Then the pressure value in pressure controller 9, then pressure are set
Controller 9 transmits pressure in the way of certain speed inhales a pressure with one, and at this moment the water in second chamber 5 accepts pressure controller
The pressure of 9 offers, and by extruding rubber membrane 3 by pressure transmission to first chamber 4, first chamber 4 is held with quartz glass sample
Device 1 communicates, thus by pressure transmission to the sample in quartz glass sample container 1.
Step 7: when the dynamic pressure force value of two pore pressure gauges is equal, then the sample in quartz glass sample container 1
Liquefy.
Step 8: connect the tracing particle device in Fig. 1, open tracing particle device, carry out in pellet pores
Thin sight flow observation.Laser system 11 is radiated on the sample in liquefaction generation container device at a certain time interval, number
Code-phase machine equipment 10 carries out photograph taking with laser system 11 cooperation, then picture data is delivered to computer 14, last root
Carry out data analysiss according to the trace particle displacement diagram picture not recorded in the same time and can draw the flow velocity in pellet pores.
Claims (8)
1. a kind of liquefaction when pellet pores in thin sight flow observation device it is characterised in that: it include liquefy generation container, water
Pressure monitoring system, liquefaction generation container fixing device, dynamic pressure force controller, laser particle speed measuring device, described liquefaction is held
Device includes quartz glass sample container and pressure transferred structure, places quartz glass ball and salt in described quartz glass sample container
Water sample, the interior rubber membrane of described pressure transferred structure is isolated into two chambers, and one of chamber is held with quartz glass sample
Device is connected, and another chamber is connected with dynamic pressure force controller；Described water pressure monitoring system comprises two ventage piezometers, wherein
One ventage piezometer is placed in quartz glass sample container, the pore water pressure between the quartzy glass specimen container endoparticle of test
Power, another ventage piezometer is placed on the within the chamber being connected with dynamic pressure force controller, and it is dynamic that test dynamic pressure force controller provides
Hydraulic pressure force value, described dynamic pressure force controller passes through pressure transferred structure to the quartz glass ball in quartz glass sample container and salt
Water sample injection pressure.
2. according to claim 1 a kind of liquefaction when pellet pores in thin sight flow observation device it is characterised in that: institute
Stating liquefaction generation container fixing device is experimental apparatus fixed mount, and for fixing liquefaction generation container, two chambers are respectively the
One chamber and second chamber, described first chamber is connected with quartz glass sample container, and described second chamber is controlled with dynamic pressure
Device connects；Two ventage piezometers are respectively the first ventage piezometer and the second ventage piezometer, described first ventage piezometer
It is placed among the sample in quartz glass sample container, described second ventage piezometer is placed in second chamber.
3. according to claim 2 a kind of liquefaction when pellet pores in thin sight flow observation device it is characterised in that: institute
State quartz glass sample container top and be provided with circular lid, described circular lid has a circular hole, the first ventage piezometer
Electric wire is worn in public from circular hole and is connected with data acquisition unit, then is connected with computer.
4. according to claim 3 a kind of liquefaction when pellet pores in thin sight flow observation device it is characterised in that: institute
State quartz container, circular lid, pressure transferred structure are made by quartz glass.
5. according to claim 4 a kind of liquefaction when pellet pores in thin sight flow observation device it is characterised in that: institute
State pressure transferred structure and dynamic pressure force controller with hose connection, rubber membrane is placed at tripping force transfer mechanism top 30mm,
Quartz glass sample container and dynamic pressure force controller are isolated and formed two chambers, described pressure controller injection pressure to pressure passes
Pass mechanism to quartz glass sample container voltage supply.
6. according to claim 3 a kind of liquefaction when pellet pores in thin sight flow observation device it is characterised in that: institute
The Circularhole diameter stated in circular lid is 10mm, and circular hole is from circular lid outermost edge 15mm of quartz glass sample container, institute
The mean diameter stating quartz glass ball is 1mm.
7. according to claim 2 a kind of liquefaction when pellet pores in thin sight flow observation device it is characterised in that: institute
State the first pore pressure gauge to be placed on away from quartz glass sample container opening 30mm, the first pore pressure gauge is from quartzy glass
The outer wall distance of glass sample container is also 30mm, and described second pore pressure gauge is placed on tripping force transfer mechanism bottom 30mm
Place.
8. the observation procedure of the thin sight flow observation device in pellet pores during a kind of liquefaction according to claim 1, its
It is characterised by: described laser particle speed measuring device includes laser system, digital camera devices, power supply box, lock unit and computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748105.XU CN205898837U (en) | 2016-07-15 | 2016-07-15 | Thin sight flow field observation device during liquefaction in granule hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748105.XU CN205898837U (en) | 2016-07-15 | 2016-07-15 | Thin sight flow field observation device during liquefaction in granule hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205898837U true CN205898837U (en) | 2017-01-18 |
Family
ID=57773314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620748105.XU Expired - Fee Related CN205898837U (en) | 2016-07-15 | 2016-07-15 | Thin sight flow field observation device during liquefaction in granule hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205898837U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053878A (en) * | 2016-07-15 | 2016-10-26 | 浙江科技学院 | Observation device for microscopic flow field in particle pore in liquidation and observation method thereof |
| CN107345883A (en) * | 2017-02-22 | 2017-11-14 | 浙江科技学院（浙江中德科技促进中心） | Ludox reinforces the intensive analysis device and method of a wide range of sand |
-
2016
- 2016-07-15 CN CN201620748105.XU patent/CN205898837U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053878A (en) * | 2016-07-15 | 2016-10-26 | 浙江科技学院 | Observation device for microscopic flow field in particle pore in liquidation and observation method thereof |
| CN106053878B (en) * | 2016-07-15 | 2018-09-21 | 浙江科技学院 | Thin sight flow observation device and its observation procedure when liquefaction in pellet pores |
| CN107345883A (en) * | 2017-02-22 | 2017-11-14 | 浙江科技学院（浙江中德科技促进中心） | Ludox reinforces the intensive analysis device and method of a wide range of sand |
| CN107345883B (en) * | 2017-02-22 | 2019-10-01 | 浙江科技学院（浙江中德科技促进中心） | Silica solution reinforces the intensive analysis device and method of a wide range of sand |
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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: 20170118 Termination date: 20190715 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |