CN110082281A - A kind of Radial Flow Through Porous Media instrument and its operating method - Google Patents
A kind of Radial Flow Through Porous Media instrument and its operating method Download PDFInfo
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- CN110082281A CN110082281A CN201910528937.9A CN201910528937A CN110082281A CN 110082281 A CN110082281 A CN 110082281A CN 201910528937 A CN201910528937 A CN 201910528937A CN 110082281 A CN110082281 A CN 110082281A
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- 238000011017 operating method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000002689 soil Substances 0.000 claims abstract description 68
- 238000002474 experimental method Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 18
- 239000003381 stabilizer Substances 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 230000008595 infiltration Effects 0.000 claims description 6
- 238000001764 infiltration Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of Radial Flow Through Porous Media instrument and its operating methods, belong to centrifugal modeling field.It can be used for the Radial Flow Through Porous Media experiment around from center, can be used for the Radial Flow Through Porous Media experiment from four circumferential centers, and can rapidly convert between.It mainly include lower cover, upper cover, outer sleeve, permeable cylinder, permeable stick.Soil sample is in annulus column, and permeable stick is inserted in hole, and permeable stick connects upper cover and lower cover.There are two main water routes for flowing separately through soil sample centre bore and periphery in the Radial Flow Through Porous Media instrument, control the water inlet and draining in water route, the water in a water route can be made along the different radial penetration of soil sample to another water route, be discharged in measure of water container.Convenient to be discharged internal gas as early as possible at test initial stage, dual-use, structure is simple, economizes on resources and the time.
Description
Technical field
The present invention relates to centrifugal modeling field, in particular to a kind of Radial Flow Through Porous Media instrument and its operating method.
Background technique
The permeability of the soil body is one of basic engineering characteristic of the soil body, be in soil test research the index that must measure it
One, it is to analyze the basis that dam seepage calculates and seepage action of ground water calculates.The infiltration of soil body sample has vertical, transverse direction and radial infiltration
Saturating three kinds of modes.The one-dimensional vertically permeability test method and apparatus relative maturity with transverse direction, and at present for the soil body in radial infiltration
The experiment of permeability and radial penetration coefficient determination under the conditions of stream is simultaneously immature, has no more targeted experimental method and reality
Test equipment.Patent retrieval has found application No. is 201720773880.5, and entitled " one kind is special for evaluating soil body Radial Flow Through Porous Media
Property radial penetration experimental provision ", which is from center seepage flow around, and its water inlet is above, inconvenience discharge soil sample
Interior gas；The water that its water outlet oozes out in lower section, soil sample is possible to quickly flow out, and soil sample upper outside is made to be in unsaturation
State causes the state in soil sample and inhomogenous, and tests difference to be simulated, influences measuring accuracy.
Radial Flow Through Porous Media in two kinds of situation, including from center seepage flow around, and from four circumferential center seepage flow, scientific research is badly in need of
The seepage instrument that both of these case can be simulated measures corresponding radial penetration coefficient, and more can really react the soil body in diameter
Infiltrative development law in the case of to seepage flow, to provide reference frame for the processing of Practical Project problem.
Summary of the invention
It is an object of the invention to solve the problems, such as above-mentioned the deficiencies in the prior art and, provide a kind of Radial Flow Through Porous Media
Instrument and its operating method.
A kind of Radial Flow Through Porous Media instrument provided by the invention and its operating method, the main structure of the Radial Flow Through Porous Media instrument mainly include
Permeable cylinder on the outside of annulus column soil sample and the outer sleeve on the outside of permeable cylinder, two lids for being located at soil sample both ends
Body, the permeable stick across soil sample centre bore；Permeable stick in soil sample centre bore length range can make water through in permeable stick side surface
Outer circulation, two ends of permeable stick are fixed on the centre of corresponding lid, both ends have can external water pipe limbers, water
The other end can be flowed to from one end of permeable stick；The edge of each lid has edge corresponding with the barrel position of permeable cylinder logical
Hole, can external water pipe；There is sealing ring between the end face of outer sleeve and corresponding lid, between the both ends of permeable stick and corresponding lid
Sealing；After soil sample is installed in place, the both ends of soil sample respectively with have gasket between the lid that closes on, and each gasket is compressed, pad
It is waterproof between piece and corresponding lid and between gasket and soil sample end face.
Preferably, there is filter membrane between the lateral surface of soil sample and permeable cylinder and between medial surface and permeable stick；The filter
Film is filter paper.
Preferably, permeable stick is made of the Water permeable body section at middle part and the lengths of steel pipes at both ends, there is external screw thread in lengths of steel pipes；Two
Lid has centre bore, and permeable stick passes through the centre bore of soil sample centre bore and two lids, and there is limbers at both ends.
Preferably, top surface has o-ring groove, is placed with sealing ring in o-ring groove, and two sealing rings are respectively and outside
Two end faces of sleeve contact.
Preferably, in the end of permeable cylinder, lid has the catch basin of annular.
Preferably, the outer end face of a lid there are three or more than three leg bolt holes, mountable band it is externally threaded
Stabilizer blade.
Preferably, the material of the middle part Water permeable body of permeable stick and permeable cylinder is sintered copper；The material of the steel pipe of permeable stick end
Matter is stainless steel；The material of outer sleeve and lid is bronze；The material of nut is stainless steel.
Further, the operating method of the Radial Flow Through Porous Media instrument mainly comprises the steps that
Step 1: adjusting the stabilizer blade of lower cover, lower cover is made to be in horizontality；It is placed centrally lower gasket, and lower seal is put into down
The o-ring groove of lid；
Step 2: placing outer sleeve；Filter paper is placed in the inside of permeable cylinder, and soil sample is pushed into permeable cylinder, they are put into togerther housing
Cylinder, places filter paper into the hole at soil sample center, is placed centrally Upper gasket；
Step 3: placing upper seal in the o-ring groove of upper cover, and be buckled in the top of soil sample between two parties；
Step 4: permeable stick is upright, and upper end puts on gasket ring, and screws on top nut, makes gasket ring against top nut, and make to hold
The external screw thread initial position of portion's steel pipe is located at the intermediate altitude of upper gasket ring；The lower end of permeable stick sequentially passes through upper cover, in soil sample
Heart hole, lower cover from lower end cap underlay ring, and screw lower nut with spanner；
Step 5: connector, the connector of connector outer end and permeable stick end are screwed in the edge hole of upper cover and lower cover
Connector type is identical；All water pipe of the connector connection with switch, share 4, respectively edge water inlet pipe, edge goes out
Water pipe, center water inlet pipe, central water outlet pipe；The other end of edge outlet pipe and central water outlet pipe is respectively protruding into two collection bottles,
Each collection bottle is placed on an electronic balance；
If carrying out the experiment to center seepage flow:
Step 6a: all water inlet pipe and outlet pipe switch are opened, until there is no bubbles in the water of two outlet pipes discharge；It closes
The switch on edge outlet pipe is closed, the switch on the water inlet pipe of center is turned off, to there is no bubble discharges in central water outlet pipe, often
The reading of No. 1 electronic balance is recorded every 5min, record continues 8 hours；Close all water inlet pipe and outlet pipe switch；
If carrying out the experiment of seepage flow around:
Step 6b: all water inlet pipe and outlet pipe switch are opened, until there is no bubbles in the water of two outlet pipes discharge；It closes
The switch on central water outlet pipe is closed, the switch on edge water inlet pipe is turned off, to there is no bubble discharges in edge outlet pipe, often
The reading of No. 1 electronic balance is recorded every 5min, record continues 8 hours；
In this step, can between step 6a and step 6b multiple conversions；
Step 7: after terminating experiment, calculating to the corresponding infiltration coefficient of center seepage flow and around seepage flow.
Preferably, the outer sleeve and permeable cylinder are combined into one, and both ends of the surface are concordant, correspondingly, experimental implementation
Method only need to by step 2 be changed to:
Step 2: filter paper is placed in the inside of the assembly of outer sleeve and permeable cylinder, and soil sample is pushed into, together by assembly and soil sample
It is placed on lower lid, places filter paper into the hole at soil sample center, be placed centrally Upper gasket.
Preferably, outer sleeve is fixed together with lower cover, is integrally formed；Correspondingly, Examination on experimental operation only need by
First two steps are changed to:
Step 1: adjusting the stabilizer blade of lower cover, lower cover is made to be in horizontality；It is placed centrally lower gasket；
Step 2: filter paper is placed in the inside of permeable cylinder, and soil sample is pushed into permeable cylinder, they are put into togerther outer sleeve, into soil sample
Filter paper is placed in the hole of the heart, is placed centrally Upper gasket.
In the scheme of the application, edge hole and permeable cylinder on the lid of Radial Flow Through Porous Media instrument both ends constitute a water passage,
Another water passage of permeable bar construction.When the switch for the water pipe closed on a lid, and close another lid
The switch of water pipe on another upper water route, opens other two conduit switch, and the radial penetration instrument in this programme can simulate
From soil sample wall side to the seepage flow of the other side, including center seepage flow and four circumferential center seepage flow around.Start in experiment first
Phase, openable all conduit switch close the draining after being discharged in the drainpipe for needing to close its switch there is no bubble
Pipe switch, and then close corresponding water inlet pipe switch, the gas in instrument is discharged, in remaining drainpipe also there is no
Bubble discharge, illustrates the gas being discharged in soil sample by preliminary seepage flow, starts to measure the water in collection bottle.
Radial Flow Through Porous Media instrument in this programme can carry out two-way Seepage Experiment by once assembling, achieve the purpose that it is dual-purpose,
And it repeatedly can arbitrarily be converted to center seepage flow and around between seepage flow；The effect of permeable stick includes that (1) passes water through side table
Face enters barred body and is transported to the outlet pipe of connection, or the water in the water inlet pipe of connection is uniform in the overall height journey of soil sample centre bore
Ground passes through outer surface and enters soil sample；(2) applying pressure to two lids ensures that the seepage instrument seals；(3) two lids are applied
Pressure compresses Upper gasket and lower gasket in turn, it is ensured that soil sample end face not seepage flow realizes Radial Flow Through Porous Media；(4) it eliminates in addition
Loading mechanism, permeable stick has both load function, economizes on resources and invest, and saves experimental period, improves conventional efficient；Permeable stick
Middle section Water permeable body and the material of permeable cylinder be sintered copper, avoid conventional permeable stone and be easy damaged disadvantage, it is durable, and
Sintered copper itself does not absorb water, and experiment can rapidly enter the formal reading stage, can accelerate experiment process；The Radial Flow Through Porous Media instrument it is close
Seal structure, it can be ensured that the not outer leak of sealing.The gasket of aximal deformation value, it can be ensured that between experimentation gasket and lid and gasket with
Contact is close waterproof between soil sample end face.Upper cover and lower cover can be identical, the number of types of simplified assembly, nut, stabilizer blade and
Standard component can be used in connector, convenient for manufacture and assembling.
Detailed description of the invention
The main part structural schematic diagram of Fig. 1 radial penetration instrument.
The complete structural schematic diagram of Fig. 2 radial penetration instrument.
Fig. 3 crosses the perpendicular sectional schematic diagram of cover center line and edge hole.
The schematic elevation view of Fig. 4 lid groove side.
The elevational schematic view of Fig. 5 lower cover.
Fig. 6 crosses the permeable stick vertical section schematic diagram of center line.
The vertical section schematic diagram of Fig. 7 outer sleeve.
The vertical section schematic diagram of the permeable cylinder of Fig. 8.
The vertical section schematic diagram of the assembly of Fig. 9 outer sleeve and permeable cylinder.
The vertical section schematic diagram of the integrated pedestal of Figure 10 and outer sleeve.
It is identified in figure: 1- lower cover;1a- upper cover;2- lower nut;2a- top nut 3- outer sleeve;The permeable cylinder of 4-;5- soil sample;
6- lower seal;6a- upper seal;Gasket ring under 7-;The upper gasket ring of 7a-;The permeable stick of 8-;9- lower gasket;9a- Upper gasket;11- sealing
Enclose groove;12- catch basin;13- centre bore;14- edge hole;15- stabilizer blade screw hole;16- stabilizer blade;The middle section 17- Water permeable body;The end 18-
Portion's steel pipe;19- connector a;20- connector b;21- connector;The edge 22- water inlet pipe;The edge 22a- outlet pipe;The center 23- into
Water pipe;23a- central water outlet pipe.
Specific embodiment
The following is specific embodiments of the present invention, and technical solution of the present invention is described in conjunction with attached drawing, but this
Invention is not limited to this embodiment.
Embodiment one
The agent structure schematic diagram of the present embodiment is shown in that Fig. 1, complete structural schematic diagram are shown in that Fig. 2, Fig. 3 to Fig. 8 are primary clustering
Schematic diagram.The main structure of the Radial Flow Through Porous Media instrument mainly includes permeable cylinder 4, outer sleeve 3, upper cover 1a, lower cover 1, permeable stick 8；It is suitable
Soil sample 5 for the radial penetration instrument is annulus column, high 40.0mm, outer diameter 61.8mm, internal diameter 6.18mm, in centre bore
It is inserted with permeable stick 8；There is filter paper between the lateral surface of soil sample 5 and permeable cylinder 4 and between medial surface and permeable stick 8.Permeable cylinder 4
A height of 42.0mm, outer diameter 74.8mm, internal diameter 62.2mm；A height of 42.0mm of outer sleeve 3, outer diameter 81.8mm, thickness
For 3.4mm.The material of Upper gasket 9a and lower gasket 9 is soft rubber, and both for circular ring shape, internal diameter 5.8mm, outer diameter is
61.8mm, with a thickness of 2.0mm, with a thickness of 1.0mm after being compressed in experimentation.Upper cover 1a and lower cover 1 are circle, and outer diameter is
100.0mm, maximum gauge 19.5mm, central slot segment thickness are 16.0mm；The internal diameter of the equal diameter section of edge hole 14 is
8.0mm, a height of 10.0mm, top are connected to catch basin 12.Catch basin 12 is located at the underface of permeable 4 barrel of cylinder, cross section
Width is 3.2mm, depth 4.0mm.The width of o-ring groove 11 is 3.2mm, depth 2.0mm.Lower seal 6 and upper close
The material of seal 6a is rubber, and the diameter 3.2mm in cross section, lower seal 6 and upper seal 6a are under pressure, it is ensured that outer
The both ends of sleeve 3 seal.The aperture that the centre bore 13 of upper cover 1a and lower cover 1 is located at groove side is 5.7mm, deep 4.0mm, the other side
Aperture be 12.0mm, deep 12.0mm.Permeable cylinder 4, permeable stick 8 middle section Water permeable body 17 material be sintered copper, sintered copper
Cost of manufacture is not high, and cracky, good characteristics more durable, and that there is material itself not absorb water are not manufactured component
The alternative materials of permeable stone；The material of outer sleeve 3, upper cover 1a and lower cover 1 is bronze, is corroded convenient for making and being not easy；End
The material of steel pipe 18 is stainless steel, and the material of lower nut 2 and top nut 2a are stainless steel.Therefore, the various components of whole device
Durability is good, and does not absorb water.The overall length of permeable stick 8 is 115.0mm, and the length of outer diameter 5.6mm, middle section Water permeable body 17 are
46.0mm；The 4.0mm length range surfaces externally and internally that end steel pipe 18 is in contact with middle section Water permeable body 17 is smooth, separately there is connector
A19 is located at end, and rest part has external screw thread.The material of lower gasket ring 7 and upper gasket ring 7a are rubber, and with a thickness of 4.0mm, internal diameter is
5.6mm, outer diameter 12.0mm；A length of 17.0mm of lower nut 2 and top nut 2a, outer diameter 11.0mm, inner hole have and end steel
The corresponding internal screw thread of the external screw thread of pipe 18.There are three tapped stabilizer blade screw hole 15, mountable band phases for the end face directed downwardly of lower cover 1
Externally threaded stabilizer blade 16 is answered, 15 internal diameter 8.0mm of stabilizer blade screw hole, deep 12.0mm, the length of stabilizer blade 16 is 50.0mm.
The step of when carrying out Seepage Experiment using the Radial Flow Through Porous Media instrument it is following (it is assumed that first to center seepage flow, be then changed to
Surrounding seepage flow):
Step 1-1: the stabilizer blade 16 of adjustment lower cover 1 makes lower cover 1 be in horizontality；It is placed centrally lower gasket 9, and by lower sealing
Circle 6 is put into o-ring groove 11；
Step 1-2: outer sleeve 3 is placed；Filter paper is placed in the inside of permeable cylinder 4, and soil sample 5 is pushed into permeable cylinder 4, they are put together
Enter outer sleeve 3, place filter paper into the hole at 5 center of soil sample, is placed centrally Upper gasket 9a；
Upper seal 6a is placed in step 1-3: upper cover 1a o-ring groove 11, and is buckled in the top of soil sample 5 between two parties；
Step 1-4: permeable stick 8 is upright, and upper end puts on gasket ring 7a, and screws on top nut 2a, makes gasket ring 7a against upper spiral shell
Female 2a, and the intermediate altitude for making the external screw thread initial position of end steel pipe 18 be located at upper gasket ring 7a；It successively wears the lower end of permeable stick 8
Upper cover 1a, the centre bore of soil sample 5, lower cover 1 are crossed, from lower end cap underlay ring 7, and screws lower nut 2 with spanner；
Step 1-5: screwing in connector 21 in the edge hole 14 of upper cover 1a and lower cover 1, and the outer end of connector 21 is connector
b20；The water pipe with switch is connected with connector a19 for connector b20, shares 4, respectively edge water inlet pipe 22, edge
Outlet pipe 22a, center water inlet pipe 23, central water outlet pipe 23a；The other end of edge outlet pipe 22a and central water outlet pipe 23a difference
Two collection bottles are protruded into, each collection bottle is placed on an electronic balance；
Step 1-6: it first carries out to center Seepage Experiment: all water inlet pipe and outlet pipe switch is opened, until two outlet pipes
There is no bubbles in the water of discharge；Switch on closed edge outlet pipe 22a, turns off the switch on center water inlet pipe 23, to
There is no bubble discharges in central water outlet pipe 23a, record the reading of No. 1 electronic balance every 5min, record continues 8 hours；It closes
Close all water inlet pipe and outlet pipe switch；
Step 1-7: it carries out Seepage Experiment around: all water inlet pipe and outlet pipe switch is opened, until two outlet pipes are arranged
There is no bubbles in water out；Switch on closing center outlet pipe 23a, turns off the switch on edge water inlet pipe 22, to side
There is no bubble discharges in edge outlet pipe 22a, record the reading of No. 1 electronic balance every 5min, record continues 8 hours；
Step 1-8: it after terminating experiment, calculates to the corresponding infiltration coefficient of center seepage flow and around seepage flow.
Embodiment two
The present embodiment difference from example 1 is that, outer sleeve 3 and permeable cylinder 4 are combined into an assembly, see Fig. 9.Knot
That closes is achieved in that the both ends in 3 inner surface of outer sleeve respectively apply the structure glue of 10.0mm wide, and outer sleeve 3 and permeable cylinder 4 are glued
It becames one, and both ends of the surface are concordant.Correspondingly, Examination on experimental operation is basic as in the first embodiment, only step 2 is changed to:
Step 2-2: filter paper is placed in the inside of the assembly of outer sleeve 3 and permeable cylinder 4, soil sample 5 is pushed into, by assembly and soil sample
5 are placed into together on lower cover 1, place filter paper into the hole at 5 center of soil sample, are placed centrally Upper gasket 9a.
Embodiment three
The difference outer sleeve 3 and lower cover 1 of the present embodiment and embodiment 1 are integrated manufacture, and assembly schematic diagram is shown in Figure 10.
The production of o-ring groove 11 in lower cover 1 is thus eliminated, and eliminates lower seal 6, facilitates operation.Correspondingly, real
It is basic as in the first embodiment, being that preceding 2 step is changed to test operating method:
Step 3-1: the stabilizer blade 16 of adjustment lower cover 1 makes lower cover 1 be in horizontality；It is placed centrally lower gasket 9；
Step 3-2: filter paper is placed in the inside of permeable cylinder 4, and soil sample 5 is pushed into permeable cylinder 4, they are put into togerther outer sleeve 3, to
Filter paper is placed in the hole at 5 center of soil sample, is placed centrally Upper gasket 9a.
The description of above-mentioned specific embodiment is merely to illustrate the present invention, rather than the rights protection model that limitation is of the invention
It encloses.
Claims (10)
1. a kind of Radial Flow Through Porous Media instrument, it is characterised in that: the main structure of the Radial Flow Through Porous Media instrument mainly includes being located at annulus column soil
Permeable cylinder on the outside of sample and the outer sleeve on the outside of permeable cylinder, pass through in soil sample two lids for being located at soil sample both ends
The permeable stick in heart hole；Permeable stick in soil sample centre bore length range can make water through circulating inside and outside permeable stick side surface, permeable stick
Two ends be fixed on the centre of corresponding lid, both ends have can external water pipe limbers, water can be from permeable stick
One end flows to the other end；There is edge through-hole corresponding with the barrel position of permeable cylinder at the edge of each lid, can external water pipe；
There is sealing ring between the end face of outer sleeve and corresponding lid, is sealed between the both ends of permeable stick and corresponding lid；Soil sample installation
After in place, the both ends of soil sample respectively with have gasket between the lid that closes on, and each gasket is compressed, gasket and corresponding lid
Between and gasket and soil sample end face between it is waterproof.
2. a kind of Radial Flow Through Porous Media instrument as described in claim 1, it is characterised in that: between the lateral surface of soil sample and permeable cylinder and
There is filter membrane between medial surface and permeable stick；The filter membrane is filter paper.
3. a kind of Radial Flow Through Porous Media instrument as claimed in claim 2, it is characterised in that: permeable stick is by the Water permeable body section at middle part and both ends
Lengths of steel pipes composition, have external screw thread in lengths of steel pipes；Two lids have centre bore, and permeable stick passes through soil sample centre bore and two lids
There is limbers at the centre bore of body, both ends.
4. a kind of Radial Flow Through Porous Media instrument as claimed in claim 3, it is characterised in that: top surface has o-ring groove, sealing ring
Sealing ring is placed in groove, two sealing rings are contacted with two end faces of outer sleeve respectively.
5. a kind of Radial Flow Through Porous Media instrument as claimed in claim 4, it is characterised in that: in the end of permeable cylinder, lid has annular
Catch basin.
6. a kind of Radial Flow Through Porous Media instrument as claimed in claim 5, it is characterised in that: there are three the outer end faces of a lid or is more than
Three leg bolt holes, the mountable externally threaded stabilizer blade of band.
7. a kind of Radial Flow Through Porous Media instrument as claimed in claim 6, it is characterised in that: the middle part Water permeable body of permeable stick and permeable cylinder
Material is sintered copper；The material of the steel pipe of permeable stick end is stainless steel；The material of outer sleeve and lid is bronze；The material of nut
Matter is stainless steel.
8. a kind of Radial Flow Through Porous Media instrument as claimed in claim 7, operating method mainly comprise the steps that
Step 1: adjusting the stabilizer blade of lower cover, lower cover is made to be in horizontality；It is placed centrally lower gasket, and lower seal is put into down
The o-ring groove of lid；
Step 2: placing outer sleeve；Filter paper is placed in the inside of permeable cylinder, and soil sample is pushed into permeable cylinder, they are put into togerther housing
Cylinder, places filter paper into the hole at soil sample center, is placed centrally Upper gasket；
Step 3: placing upper seal in the o-ring groove of upper cover, and be buckled in the top of soil sample between two parties；
Step 4: permeable stick is upright, and upper end puts on gasket ring, and screws on top nut, makes gasket ring against top nut, and make to hold
The external screw thread initial position of portion's steel pipe is located at the intermediate altitude of upper gasket ring；The lower end of permeable stick sequentially passes through upper cover, in soil sample
Heart hole, lower cover from lower end cap underlay ring, and screw lower nut with spanner；
Step 5: connector, the connector of connector outer end and permeable stick end are screwed in the edge hole of upper cover and lower cover
Connector type is identical；All water pipe of the connector connection with switch, share 4, respectively edge water inlet pipe, edge goes out
Water pipe, center water inlet pipe, central water outlet pipe；The other end of edge outlet pipe and central water outlet pipe is respectively protruding into two collection bottles,
Each collection bottle is placed on an electronic balance；
If carrying out the experiment to center seepage flow:
Step 6a: all water inlet pipe and outlet pipe switch are opened, until there is no bubbles in the water of two outlet pipes discharge；It closes
The switch on edge outlet pipe is closed, the switch on the water inlet pipe of center is turned off, to there is no bubble discharges in central water outlet pipe, often
The reading of No. 1 electronic balance is recorded every 5min, record continues 8 hours；Close all water inlet pipe and outlet pipe switch；
If carrying out the experiment of seepage flow around:
Step 6b: all water inlet pipe and outlet pipe switch are opened, until there is no bubbles in the water of two outlet pipes discharge；It closes
The switch on central water outlet pipe is closed, the switch on edge water inlet pipe is turned off, to there is no bubble discharges in edge outlet pipe, often
The reading of No. 1 electronic balance is recorded every 5min, record continues 8 hours；
In this step, can between step 6a and step 6b multiple conversions；
Step 7: after terminating experiment, calculating to the corresponding infiltration coefficient of center seepage flow and around seepage flow.
9. such as claim 7 and a kind of Radial Flow Through Porous Media instrument according to any one of claims 8 and its operating method, it is characterised in that: described
Outer sleeve and permeable cylinder be combined into one, and both ends of the surface are concordant, correspondingly, Examination on experimental operation only need to by step 2 change
Are as follows:
Step 2: filter paper is placed in the inside of the assembly of outer sleeve and permeable cylinder, and soil sample is pushed into, together by assembly and soil sample
It is placed on lower lid, places filter paper into the hole at soil sample center, be placed centrally Upper gasket.
10. such as claim 7 and a kind of Radial Flow Through Porous Media instrument according to any one of claims 8 and its operating method, it is characterised in that: housing
Cylinder is fixed together with lower cover, is integrally formed；Correspondingly, first two steps need to be only changed to by Examination on experimental operation:
Step 1: adjusting the stabilizer blade of lower cover, lower cover is made to be in horizontality；It is placed centrally lower gasket；
Step 2: filter paper is placed in the inside of permeable cylinder, and soil sample is pushed into permeable cylinder, they are put into togerther outer sleeve, into soil sample
Filter paper is placed in the hole of the heart, is placed centrally Upper gasket.
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| CN113029897A (en) * | 2021-02-20 | 2021-06-25 | 中海油能源发展股份有限公司 | Visual full-diameter seepage simulation device and method |
| CN113029896A (en) * | 2021-02-20 | 2021-06-25 | 中海油能源发展股份有限公司 | Full-diameter visual core radial flow clamping device and method |
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