CN108627441A - One kind can survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig - Google Patents
One kind can survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig Download PDFInfo
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- CN108627441A CN108627441A CN201810384395.8A CN201810384395A CN108627441A CN 108627441 A CN108627441 A CN 108627441A CN 201810384395 A CN201810384395 A CN 201810384395A CN 108627441 A CN108627441 A CN 108627441A
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- 239000002689 soil Substances 0.000 title claims abstract description 44
- 230000008595 infiltration Effects 0.000 title claims abstract description 43
- 238000001764 infiltration Methods 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 230000035699 permeability Effects 0.000 claims abstract description 57
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 29
- 238000012360 testing method Methods 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 21
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000005484 gravity Effects 0.000 claims description 15
- 239000011148 porous material Substances 0.000 claims description 14
- 238000002474 experimental method Methods 0.000 claims description 10
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 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 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 230000003204 osmotic effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000003643 water by type Substances 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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- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses one kind can surveying stratiform gravel soil body multi-angle infiltration coefficient experimental rig, including support system, upstream water supply installation, permeability apparatus, downstream liquid collection device and data collecting system；The support system is used to control the angle of sample chamber and horizontal direction in permeability apparatus；The upstream water supply installation being connect with permeability apparatus is for saturated sample and provides permeation liquid needed for permeability test；The downstream liquid collection device being connect with permeability apparatus is for collecting the liquid permeated from sample chamber；The data transmission that data collecting system is used to acquire carries out the calculating of infiltration coefficient to computer.The present invention repeated multiple times can carry out the infiltration coefficient that permeability test obtains sample under different angle using same sample, avoid difference of the various sample in permeance property, more accurately and efficiently obtain soil body multi-angle infiltration coefficient.
Description
Technical field
The present invention relates to one kind can surveying stratiform gravel soil body multi-angle infiltration coefficient experimental rig, belongs to soil test technique
Field.
Background technology
The permeability of soil is several basic assignments in soil mechanics, intensity, deformation, seepage flow together with intensity, deformation characteristic
Between be influence each other, be mutually related relationship.Soil body osmotic coefficient is the quantitative target for reflecting soil body water permeability, in engineering
One extremely important index of water permeable ability, impermeabilisation deformability, the impermeabilisation damage capability of the middle evaluation soil body etc..Building
Many engineering problems are all closely related with the seepage flow of water in soil in engineering field, as compacted subgrade causes soil structures to be provided with layer
Shape characteristic, there is a phenomenon where the permeance properties of differential settlement and the soil body certain relationship for the soil body with stratiform property, i.e.,
Permeance property of the soil body under different angle shows notable difference.How to provide the infiltration of Multilayered Soil multi-angle by experiment is
Number, and further investigation is carried out with important significance of scientific research and realistic meaning to the correlation of its Penetration Signature and engineering characteristic.
The instrument for being usually used in measuring soil body osmotic coefficient at present has triaxial osmocope, TST-70 types permeameter, TST-55 types
Permeameter etc., all generally existing specimen size are smaller, the osmotic pressure of offer is small, is unable to measure multi-angle soil body osmotic coefficient etc.
Defect.Many scholars are directed to particular problem, to conventional permeameter improve or have had developed new permeameter, but still can not be real
The measurement for providing multi-angle infiltration coefficient in existing same instrument to the stratiform gravel class soil body, affect soil body permeability test and
Research.Problems are needed to develop a kind of soil body osmotic coefficient anisotropy measurement device more to test stratiform gravel soil body
Angle infiltration coefficient experimental rig is applied in side slope and embankment osmotic stability project analysis.
Invention content
The present invention provides one kind can surveying stratiform gravel soil body multi-angle infiltration coefficient experimental rig, polygonal for realizing
Spend the measurement of infiltration coefficient.
The technical scheme is that：One kind can survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig, including branch
Support system, upstream water supply installation, permeability apparatus, downstream liquid collection device and data collecting system；The support system is used for
Control the angle of sample chamber 31 and horizontal direction in permeability apparatus；The upstream water supply installation being connect with permeability apparatus is tried for being saturated
Permeation liquid needed for sample and offer permeability test；The downstream liquid collection device being connect with permeability apparatus is for collecting from examination
The liquid that specimen chamber 31 permeates；The data transmission that data collecting system is used to acquire carries out the calculating of infiltration coefficient to computer.
The support system includes pedestal 11, montant 12, fastener 13, cross bar 14, casing 15 and supporting rod 16；The bottom
It is arranged in vertical montant 12 on seat 11, cross bar 14 is connect by fastener 13 with montant 12, and upper layer and lower layer cross bar 14 is distinguished
Ring montant 12 is arranged to a rectangle, and two layers of cross bar 14 is parallel, and casing 15, supporting rod 16 are respectively provided on each layer both sides long side cross bar 14
It is arranged perpendicular to both sides long side cross bar 14 and is fixedly connected with the casing 15 on cross bar 14；Cross bar 14 passes through fastener 13
Elastic to be vertically moved on montant 12, the linkage supporting rod 16 of casing 15 moves in the horizontal plane, and upper layer and lower layer cross bar 14 moves vertically
It is dynamic to make upper layer and lower layer supporting rod 16 that different height differences be presented.
The upstream water supply installation include equipment 21 with air pressure capable of being increased, pressed gas air inlet pipe 22, liquid storage container 23, pressure water into
Water pipe 27 and scale 28；The liquid storage container 23 divides for gas compartment 24 and liquid chamber 25, and is detached by stopper 26；
The equipment with air pressure capable of being increased 21 is connected to by pressed gas air inlet pipe 22 in gas compartment 24, pressure water water inlet pipe 27 and liquid
Room 25 is connected to, and equipment 21 with air pressure capable of being increased makes the extruding application of liquid chamber 25 of stopper 26 give penetrating fluid by increasing by 24 internal pressure of gas compartment
Body simultaneously makes it through pressure water water inlet pipe 27 and enters in permeability apparatus, and scale 28 is indicated inside liquid storage container 23, passes through liquid
Pass through the liquid capacity of permeability apparatus during the 28 position analysis experiment of corresponding scale.
The permeability apparatus includes sample chamber 31, fixed lock ring 32；
31 lower section of the sample chamber is connected to upstream water supply installation, and 31 top of sample chamber is connected to downstream liquid collection device, fixing lock
The right angle in two sides of sample chamber or so is arranged in ring 32, the fixed lock ring 32 of two above a side and upper layer supporting rod
16 are attached, and the fixed lock ring 32 of two below another side is attached with lower layer support bar 16.
32 rounded structure of the fixed lock ring, internal diameter are 1.2-1.4 times of supporting rod internal diameter.
The shape of the permeability apparatus sample chamber 31 is the cuboid of a × a × b, and b is at least 1.5 times of a, less
In 4 times；31 upper and lower surface of the sample chamber be a × a square, be on one side at the water inlet of upstream 37, on one side for downstream water outlet at
38,38 can open and put sample at the water outlet of downstream, and 37 cannot then dismantle at the water inlet of upstream；31 side of the sample chamber is a × b
Rectangle.
The downstream liquid collection device includes liquid header 41, infiltration water outlet pipe 42；
The liquid header 41 is connected to permeability apparatus by permeating water outlet pipe 42, and sample chamber 31 of the liquid through permeability apparatus oozes
Liquid header 41 is penetrated, the measurement of gravity sensor 53 through 41 bottom of liquid header obtains seepage discharge.
The data collecting system includes gas pressure sensor 51, pore water pressure sensor 52, gravity sensor 53；
Multiple pore water pressure sensors 52 are equidistant in the vertical centerline of 31 former and later two sides of sample chamber along permeability apparatus to be set
It sets, gas pressure sensor 51 is set to the inside of gas compartment 24 in the water supply installation of upstream, and gravity sensor 53 is set to downstream
The lower section of liquid header 41 in fluid collection device, gas pressure sensor 51, pore water pressure sensor 52 and gravity pass
The data that sensor 53 acquires are transmitted to computer by data line 54.
The beneficial effects of the invention are as follows：
1）Stratiform gravel soil body multi-angle infiltration coefficient experimental rig can be surveyed, is come by using electronic digitalizing and automatic technology
Acquire and handle the data and as a result, it is possible to high precision and efficient test stratiform gravel soil body multi-angle of entire experimental rig
Infiltration coefficient.
2）There are scale and gas pressure sensor, gas pressure sensor real-time in the water supply installation of upstream inside liquid storage container
Internal pressure is recorded, when its pressure keeps stablizing, liquid corresponds to the variation of scale rule, you can formally starts test data sheet, upstream
The liquid capacity for entering permeability apparatus is calculated by scale analysis for water supply installation, is obtained with downstream liquid collection device
The seepage discharge collected by sample chamber compares and analyzes, and improves the accuracy and science of test result.
3）Prepared by sample prepares without being repeated as many times in the hope of multi-angle infiltration coefficient, and the sample of permeability test test can
Carry out preparing sample and saturation in the sample chamber of the device, sample chamber is only open on one side, can avoiding device to a certain degree
The upper possibility leaked.
4）The sample of permeability test test is attached by fixed lock ring with supporting rod, and adjusting two layers of support distance between tie rods makes
Sample is in angle needed for experiment, repeated multiple times can carry out permeability test using same sample and obtain sample under different angle
Infiltration coefficient avoids difference of the various sample in permeance property, more accurately and efficiently obtains soil body multi-angle infiltration system
Number.
Description of the drawings
Fig. 1 is the upstream water supply installation structural schematic diagram of the present invention；
Fig. 2 is the permeability apparatus structural schematic diagram of the present invention；
Fig. 3 is the multi-angle infiltration coefficient test schematic diagram of the present invention；
Fig. 4 is the sample chamber shape and scale diagrams of the present invention；
Fig. 5 is the downstream liquid collection device schematic diagram of the present invention；
In figure respectively marked as：11- pedestals；12- montants；13- fasteners；14- cross bars；15- casings；16- supporting rods；21- aeratings
Press equipment；22- pressed gas air inlet pipe；23- liquid storage containers；24- gas compartments；25- liquid chambers；26- stoppers；27- pressure water into
Water pipe；28- scales；31- sample chambers；32- fixes lock ring；33- soil body layer structures；The cross-section of river at 34- water inlets；35- permeates
Direction；The cross-section of river at 36- water outlets；At the water inlet of the upstreams 37-；At the water outlet of the downstreams 38-；41- liquid headers；42- infiltration water goes out
Water pipe；51- gas pressure sensors；52- pore water pressure sensors；53- gravity sensors；54- data lines.
Specific implementation mode
With reference to the accompanying drawings and examples, the invention will be further described, but present disclosure be not limited to it is described
Range.
Embodiment 1：As Figure 1-Figure 5, one kind can survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig, including
Support system, upstream water supply installation, permeability apparatus, downstream liquid collection device and data collecting system；The support system is used
In the angle for controlling sample chamber 31 and horizontal direction in permeability apparatus；The upstream water supply installation being connect with permeability apparatus is for being saturated
Permeation liquid needed for sample and offer permeability test；The downstream liquid collection device being connect with permeability apparatus for collect from
The liquid that sample chamber 31 permeates；Data transmission of the data collecting system by that will acquire is carried out to computer based on infiltration coefficient
It calculates.
Include pedestal 11, montant 12, fastener 13, cross bar 14, casing 15 it is possible to further which the support system is arranged
With supporting rod 16；Montant 12 is arranged in vertical on the pedestal 11, cross bar 14 is connect by fastener 13 with montant 12, on
Ring montant 12 is arranged to a rectangle to lower two layers of cross bar 14 respectively, and two layers of cross bar 14 is parallel, is all provided on each layer both sides long side cross bar 14
Casing 15 is set, supporting rod 16 is arranged perpendicular to both sides long side cross bar 14 and is fixedly connected with the casing 15 on cross bar 14；It is horizontal
Bar 14 is vertically moved by the elastic of fastener 13 on montant 12, and the linkage supporting rod 16 of casing 15 moves in the horizontal plane, on
Lower two layers of cross bar, 14 vertical shift makes upper layer and lower layer supporting rod 16 that different height differences be presented.
Include equipment 21 with air pressure capable of being increased, pressed gas air inlet pipe 22, storage it is possible to further which the upstream water supply installation is arranged
Liquid container 23, pressure water water inlet pipe 27 and scale 28；The liquid storage container 23 divides for gas compartment 24 and liquid chamber 25, and by every
Plug 26 is detached；The equipment with air pressure capable of being increased 21 is connected to by pressed gas air inlet pipe 22 in gas compartment 24, the water inlet of pressure water
Pipe 27 is connected to liquid chamber 25, and equipment 21 with air pressure capable of being increased makes the extruding liquid chamber 25 of stopper 26 apply by increasing by 24 internal pressure of gas compartment
Add to give permeation liquid and make it through pressure water water inlet pipe 27 and enter in permeability apparatus, scale is indicated inside liquid storage container 23
28, the liquid capacity during 28 position analysis of scale is tested by permeability apparatus is corresponded to by liquid.
Include sample chamber 31, fixed lock ring 32 it is possible to further which the permeability apparatus is arranged；31 lower section of the sample chamber
It is connected to upstream water supply installation, 31 top of sample chamber is connected to downstream liquid collection device, and fixed lock ring 32 is arranged in sample chamber or so
The right angle of two sides, two fixed lock rings 32 above a side are attached with upper layer supporting rod 16, another side
Two fixed lock rings 32 below face are attached with lower layer support bar 16.
It is possible to further which 32 rounded structure of the fixed lock ring is arranged, internal diameter is 1.2 times of supporting rod internal diameter.
The cuboid that shape it is possible to further which the permeability apparatus sample chamber 31 is arranged is a × a × b, and b is extremely
It is 1.5 times of a less, is not more than 4 times；31 upper and lower surface of the sample chamber is the square of a × a, is on one side at the water inlet of upstream 37,
It is that 38 can open and put sample at the water outlet of downstream, and 37 cannot then dismantle at the water inlet of upstream on one side 38 at the water outlet of downstream；The examination
31 side of specimen chamber is the rectangle of a × b.
Include liquid header 41, infiltration water outlet pipe 42 it is possible to further which the downstream liquid collection device is arranged；
The liquid header 41 is connected to permeability apparatus by permeating water outlet pipe 42, and sample chamber 31 of the liquid through permeability apparatus infiltrates through
Liquid header 41, the measurement of gravity sensor 53 through 41 bottom of liquid header obtain seepage discharge.
Include gas pressure sensor 51, pore water pressure sensing it is possible to further which the data collecting system is arranged
Device 52, gravity sensor 53；Multiple pore water pressure sensors 52 along permeability apparatus 31 former and later two sides of sample chamber it is perpendicular
It is equidistantly positioned on center line, gas pressure sensor 51 is set to the inside of gas compartment 24 in the water supply installation of upstream, gravity
Sensor 53 is set to the lower section of liquid header 41 in downstream liquid collection device, gas pressure sensor 51, pore water pressure
The data that force snesor 52 and gravity sensor 53 acquire are transmitted to computer by data line 54.
Embodiment 2, it is substantially the same manner as Example 1, the difference is that：32 rounded structure of the fixed lock ring,
Internal diameter is 1.4 times of supporting rod internal diameter.
The present invention experiment process be：
The experiment of multi-angle infiltration coefficient experimental rig is carried out using the present invention, it is necessary first to prepare experiment soil by certain requirement
Body sample, then by soil sample simulate the live soil body fill or the deposition placement in layers of soil layer is in sample chamber 31.The sample
It prepares and selection level spacing and earth material type is determined according to test objective, sample earth material is spread simultaneously using void is layered in permeability apparatus
It is successively compacted sample preparation, the level of prepared sample and two short sides of sample institute are parallel at face, i.e., vertical with the long side of sample chamber 31,
So that level is vertical with infiltration direction 35 when permeability apparatus is horizontal positioned；After the completion of prepared by the sample, sample chamber 31 is passed through
Fixed lock ring 32 is attached with supporting rod 16, and 37 is directed downward at the water inlet of upstream, and 38 directions are upward at the water outlet of downstream；
After the permeability apparatus is placed in support system according to necessary requirement, by permeability apparatus water inlet and upstream water supply installation into
Row connection, permeability apparatus water outlet are attached with downstream water collection device；Enough waters are stored in liquid storage container 23
Afterwards, it opens equipment 21 with air pressure capable of being increased and certain pressure is applied to 24 internal gas of liquid storage container gas compartment, squeezed by higher pressure
Pressure stopper 26 moves down so that 25 internal liquid of liquid chamber has certain pressure and is press-fit into from pressure water water inlet pipe 27
In permeability apparatus；It needed to meet the sample of sample requirement to having prepared in sample chamber 31 and be saturated before on-test, when liquid is received
The liquid of 42 outflow of water outlet pipe is permeated in storage 41 no longer with thinking that sample has been saturated after there is bubble；In gas compartment 24
Portion's gas pressure sensor 51 records internal pressure, when its pressure keeps stablizing（The effect of gas pressure sensor：It monitors and protects
The head for demonstrate,proving infiltration is constant）, liquid corresponds to scale 28 to be changed in rule, you can formally starts test data sheet.
It is adjusted according to permeability test angle needed for test objective, two above and below the elastic adjustment by adjusting fastener 13
Layer 14 spacing of cross bar, and then the spacing of upper layer and lower layer supporting rod 16 is controlled, supporting rod 16 can be by casing 15 in the horizontal plane
Mobile, sample chamber 21 is adjusted by fixed lock ring 22 between supporting rod 16, and entire sample chamber 31 is made to be tieed up in support system
It keeps steady fixed and is in a test objective angle state.
After the on-test, surveyed in real time by multiple pore water pressure sensors 52 mounted on 31 different location of sample chamber
The head of the cross-section of river, takes the pore water pressure sensor 52 of two of which difference height difference and measures its cross-section of river where fixed
Pore water pressure, the hydraulic gradients of two cross-sections of river is calculated in analysis；By the distance between two cross-sections of river, analysis is different
The area of the cross-section of river under angle；The permeation liquid infiltrates through liquid header 41 through sample chamber 31, by gravity sensor
53 measurement obtain seepage discharge.
The gas pressure sensor 51, pore water pressure sensor 52 and gravity sensor 53 are all during testing
Data are collected and are handled automatically by computer；According to Darcy's law, area and the distance of two cross-sections of river are it is known that hydraulic gradient
It is known that infiltration capacity is it is known that its infiltration coefficient can be acquired.
The experiment measures soil body other angles infiltration coefficient, without preparing sample again, adjusts 16 spacing tune of supporting rod
The angle of whole sample chamber 21 repeats experiment process, measures and completes angle infiltration coefficient needed for soil sample, terminates experiment.
The specific implementation mode of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (8)
1. one kind can survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig, it is characterised in that：Including support system, upstream
Water supply installation, permeability apparatus, downstream liquid collection device and data collecting system；
The support system is for controlling sample chamber in permeability apparatus（31）With the angle of horizontal direction；It is connect with permeability apparatus
Upstream water supply installation is for saturated sample and provides permeation liquid needed for permeability test；The downstream liquid being connect with permeability apparatus
Body collection device is for collecting from sample chamber（31）The liquid of infiltration；Data transmission of the data collecting system by that will acquire is based on
Calculation machine carries out the calculating of infiltration coefficient.
2. according to claim 1 survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig, it is characterised in that：Institute
It includes pedestal to state support system（11）, montant（12）, fastener（13）, cross bar（14）, casing（15）And supporting rod（16）；
The pedestal（11）On be arranged in vertical montant（12）, cross bar（14）Pass through fastener（13）With montant（12）Even
It connects, upper layer and lower layer cross bar（14）Ring montant respectively（12）It is arranged to a rectangle, two layers of cross bar（14）Parallel, each layer both sides long side is horizontal
Bar（14）On be respectively provided with casing（15）, supporting rod（16）Perpendicular to both sides long side cross bar（14）Setting and and cross bar（14）On set
Pipe（15）It is fixedly connected；Cross bar（14）Pass through fastener（13）It is elastic in montant（12）On vertically move, casing（15）
Link supporting rod（16）It moves in the horizontal plane, upper layer and lower layer cross bar（14）Vertical shift makes upper layer and lower layer supporting rod（16）It presents
Different height differences.
3. according to claim 1 survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig, it is characterised in that：Institute
It includes equipment with air pressure capable of being increased to state upstream water supply installation（21）, pressed gas air inlet pipe（22）, liquid storage container（23）, pressure water water inlet pipe
（27）And scale（28）；
The liquid storage container（23）It is divided into gas compartment（24）And liquid chamber（25）, and pass through stopper（26）It is detached；
The equipment with air pressure capable of being increased（21）Pass through pressed gas air inlet pipe（22）It is connected to gas compartment（24）It is interior, pressure water water inlet pipe
（27）With liquid chamber（25）Connection, equipment with air pressure capable of being increased（21）By increasing gas compartment（24）Internal pressure makes stopper（26）Squeezed fluid
Body room（25）Application gives permeation liquid and makes it through pressure water water inlet pipe（27）It enters in permeability apparatus, liquid storage container（23）
Inside indicates scale（28）, scale is corresponded to by liquid（28）Held by the liquid of permeability apparatus during position analysis experiment
Product.
4. according to claim 1 survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig, it is characterised in that：Institute
It includes sample chamber to state permeability apparatus（31）, fixed lock ring（32）；
The sample chamber（31）Lower section is connected to upstream water supply installation, sample chamber（31）Top is connected to downstream liquid collection device, Gu
Lock ring（32）Right angle in two sides of sample chamber or so is set, the fixed lock ring of two above a side（32）With it is upper
Layer supporting rod（16）It is attached, two below another side fix lock ring（32）With lower layer support bar（16）Connected
It connects.
5. according to claim 4 survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig, it is characterised in that：Institute
State fixed lock ring（32）Rounded structure, internal diameter are 1.2-1.4 times of supporting rod internal diameter.
6. according to claim 4 survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig, it is characterised in that：Institute
State permeability apparatus sample chamber（31）Shape be a × a × b cuboid, and b is at least 1.5 times of a, is not more than 4 times；Institute
State sample chamber（31）Upper and lower surface be a × a square, on one side for upstream water inlet at（37）, on one side for downstream water outlet at（38）,
At the water outlet of downstream（38）It can open and put sample, at the water inlet of upstream（37）It cannot then dismantle；The sample chamber（31）Side is a
The rectangle of × b.
7. according to claim 1 survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig, it is characterised in that：Institute
It includes liquid header to state downstream liquid collection device（41）, infiltration water outlet pipe（42）；
The liquid header（41）By permeating water outlet pipe（42）It is connected to permeability apparatus, sample chamber of the liquid through permeability apparatus
（31）Infiltrate through liquid header（41）, through liquid header（41）The gravity sensor of bottom（53）Measurement obtains seepage discharge.
8. according to claim 1 survey stratiform gravel soil body multi-angle infiltration coefficient experimental rig, it is characterised in that：Institute
It includes gas pressure sensor to state data collecting system（51）, pore water pressure sensor（52）, gravity sensor（53）；
Multiple pore water pressure sensors（52）The sample chamber along permeability apparatus（31）In the vertical centerline of former and later two sides
It is equidistantly positioned, gas pressure sensor（51）It is set to gas compartment in the water supply installation of upstream（24）Inside, gravity sensor
（53）It is set to liquid header in downstream liquid collection device（41）Lower section, gas pressure sensor（51）, pore water pressure
Force snesor（52）And gravity sensor（53）The data of acquisition pass through data line（54）It is transmitted to computer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024590A (en) * | 2020-01-13 | 2020-04-17 | 昆明理工大学 | Can fix on-spot measurement bulk material penetration test device of soil body |
| CN114279934A (en) * | 2021-12-28 | 2022-04-05 | 中国海洋大学 | Island reef water-rich calcareous sandy soil stratum grouting simulation and permeability test device and method |
| CN118311234A (en) * | 2024-06-07 | 2024-07-09 | 浙江大学 | Erosion test device and method for researching soil erosion and uneven filtering and blocking |
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