CN108801881A - The horizontal and vertical infiltration coefficient simultaneous determination device of silt, cohesive soil and its test method - Google Patents
The horizontal and vertical infiltration coefficient simultaneous determination device of silt, cohesive soil and its test method Download PDFInfo
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- CN108801881A CN108801881A CN201811040317.2A CN201811040317A CN108801881A CN 108801881 A CN108801881 A CN 108801881A CN 201811040317 A CN201811040317 A CN 201811040317A CN 108801881 A CN108801881 A CN 108801881A
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- 239000002689 soil Substances 0.000 title claims abstract description 59
- 238000001764 infiltration Methods 0.000 title claims abstract description 34
- 230000008595 infiltration Effects 0.000 title claims abstract description 34
- 238000010998 test method Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000004575 stone Substances 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- QRJOYPHTNNOAOJ-UHFFFAOYSA-N copper gold Chemical compound [Cu].[Au] QRJOYPHTNNOAOJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 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
-
- 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
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to a kind of silts, the horizontal and vertical infiltration coefficient simultaneous determination device of cohesive soil and its test method, it include the sample container for holding silt or cohesive soil soil sample, the upper end of the sample container is connected with the water level pipe being connected with varying head flood pattern vertically, the side wall of sample container is laid with the permeable hole that soil body particle can not pass through, it is cased with outside sample container, the transparent outer barrel that lower end is tightly connected with sample container respectively, the lower part of the transparent outer barrel is provided with the No.1 drainpipe towards varying head flood pattern, it is provided with horizontal direction data collecting instrument on the No.1 drainpipe, the sample container lower part is provided with permeable stone, the bottom of sample container is in funnel-form and is provided with No. two drainpipes towards varying head flood pattern, it is provided with vertical data collecting instrument on No. two drainpipes.
Description
Technical field
The present invention relates to a kind of silt, the horizontal and vertical infiltration coefficient simultaneous determination device of cohesive soil and its test methods.
Background technology
The phenomenon that water flows in soil body hole referred to as seepage flow, due to the effect of head difference or hydraulic gradient so that water exists
Occur seepage flow in the soil body, in Practical Project, seepage flow is in the horizontal direction simultaneous with vertical direction, and is influenced each other.Mesh
Preceding seepage flow test device, the predominantly independent device for measuring silt and cohesive soil vertical infiltration coefficient and horizontal-hole blasting,
There are no the test apparatuses measured simultaneously.For this reason, it may be necessary to the horizontal and vertical infiltration coefficient simultaneous determination dress of a kind of silt, cohesive soil
It sets.
Invention content
The purpose of the present invention is to provide a kind of silt, the horizontal and vertical infiltration coefficient simultaneous determination device of cohesive soil and its
Test method, the device can really reflect water in silt and cohesive soil in the seepage flow in horizontal and vertical direction, while test method
Simplicity, can measure silt and clay in the horizontal direction with the infiltration coefficient of vertical direction.
Technical program of the present invention lies in：A kind of silt, the horizontal and vertical infiltration coefficient simultaneous determination device of cohesive soil, packet
The sample container for holding silt or cohesive soil soil sample is included, the upper end of the sample container is connected with and varying head water filling vertically
The side wall of the water level pipe that system is connected, sample container is laid with the permeable hole that soil body particle can not pass through, sample container housing
There are the transparent outer barrel that upper and lower end is tightly connected with sample container respectively, the lower part of the transparent outer barrel to be provided with towards varying head
The No.1 drainpipe of flood pattern is provided with horizontal direction data collecting instrument, the sample container lower part on the No.1 drainpipe
It is provided with permeable stone, the bottom of sample container is in funnel-form and is provided with No. two drainpipes towards varying head flood pattern, institute
It states and is provided with vertical data collecting instrument on No. two drainpipes.
Further, the upper end of the sample container is provided with the head cover with its releasable connection and sealed processing, sample
There is hole positioned at the axis of sample container and close to sample container side-walls are symmetrically embedding from top to bottom in the soil sample of container
Water pressure gauge.
Further, the lower part of the sample container is provided with supporting table, and the side wall of sample container is made of copper by high intensity
Metal porous disc is made, and one layer of copper metal porous disc is additionally provided between the inner wall and soil sample of sample container, sample container
It is circumferentially spaced in the middle part of lateral wall to be provided with the connector being fixedly connected with transparent outer barrel.
Further, the varying head flood pattern includes water tank, and outlet pipe, institute are vertically arranged on the water tank
The upper end for stating outlet pipe is provided with intelligent water pump, and the output end of the intelligent water pump is connected with water injection pipe, the water injection pipe it is defeated
Outlet is connected with the funnel-form interconnecting piece for being set to water level pipe upper end, and the madial wall of the water level pipe, which is sticked, water level measuring instrument
Device.
Further, on the No.1 drainpipe No.1 is provided between horizontal direction data collecting instrument and transparent outer barrel
Valve is provided with No. two valves on No. two drainpipes between vertical data collecting instrument and sample container.
Further, the bottom of the water level pipe is provided with No. three valves.
Further, the lower end of the transparent outer barrel is obliquely installed with the drainage channel that sample container cooperatively forms, described
The least significant end of drainage channel is connected with No.1 drainpipe.
Further, the transparent outer barrel is made of transparent organic glass.
Further, interval is laid with osculum on the permeable stone, and the osculum aperture is 2mm.
A kind of test method applied to silt, the horizontal and vertical infiltration coefficient simultaneous determination device of cohesive soil, including with
Lower step：
（1）Head cover is opened, with ultrasonic washing instrument washed samples container inside wall, in one layer of copper gold of sample container disposed inboard
Belong to porous disc, replace and clean every time metal porous disc before experiment, and silt to be measured or cohesive soil soil sample are packed into sample container,
Distinguish from top to bottom symmetrically embedding 5 close to sample container side-walls along sample container axis and same level simultaneously
Pore pressure gauge；
（2）Top cover simultaneously completes fixed, sealing；
（3）Intelligent water pump is opened, initial water pressure is set, No. three valves is closed, setting height is filled into sample container, simultaneously
No.1 valve and No. two valves are opened, horizontal direction data collecting instrument and vertical data collecting instrument are opened；
（4）Open No. three valves of water level bottom of the tube；
（5）Wait for horizontal direction data collecting instrument, the horizontal direction seepage discharge in vertical data collecting instrument the surveyed unit interval and vertical
After seepage discharge is stablized, record respectivelyt 1、t 2Moment water level pipe water level test coupon container bottoms heighth 1、h 2And horizontal direction number
According to the water pressure for the No.1 drainpipe outflow water that Acquisition Instrument is surveyedp wh1Withp wh2, No. two drainpipes that vertical data collecting instrument is surveyed
The water pressure of outflow waterp wv1Withp wv2；
（6）Gathered data is input to computer, and horizontal direction when soil sample horizontal direction and vertical seepage flow is calculated while occurring is oozed
Saturating coefficient and vertical infiltration coefficient：
,,
In formula：k hHorizontal direction infiltration coefficient,k vVertical infiltration coefficient,LSoil body sample height,ASpecimen cross section area,a-
Water level pipe area of section,p wh1、p wh2 - t 1、t 2Moment No.1 drainpipe hydraulic pressure,p wv1、p wv2 - t 1、t 2No. two drainpipes of moment
Hydraulic pressure, γwThe severe of water,h 1、 h 2 - t 1、t 2Moment water level pipe water level test coupon container bottoms height.
Compared with prior art, the present invention has the following advantages：The horizontal and vertical infiltration coefficient connection of the silt, cohesive soil
Closing measurement device can really reflect that water in silt and cohesive soil in the seepage flow in horizontal and vertical direction, while can obtain water respectively
Flat, vertical infiltration coefficient, meets geotechnical engineering and teaching and engineering test needs.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the sample container sectional view of the present invention；
Fig. 3 is the sample container sectional view of the present invention；
Fig. 4 is the A-A sectional views of Fig. 2 of the present invention；
Fig. 5 is the permeable stone vertical view of the test specimen tube bottom of the present invention；
In figure：1- water tanks, 2- sample containers, the transparent outer barrels of 3-, 4- supporting tables, 5- head covers, 6- intelligent water pumps, 7- mono-
Number drainpipe, 8- No.1 valves, 9- horizontal direction data collecting instruments, No. bis- drainpipes of 10-, No. bis- valves of 11-, 12- are vertical
Data collecting instrument, 13- water level pipes, 131- funnel-form interconnecting pieces, No. tri- valves of 14-, 15- pore pressure gauges, 16- spiral shells
Bolt, 17- connectors, 18- permeable stones, 19- copper metal porous discs, 20- osculums, 21- outlet pipes, 22- water injection pipes.
Specific implementation mode
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and coordinate attached drawing, make detailed
It is carefully described as follows, but the present invention is not limited thereto.
Referring to figs. 1 to Fig. 5
A kind of silt, the horizontal and vertical infiltration coefficient simultaneous determination device of cohesive soil, including it is used to hold silt or cohesive soil soil
The sample container 2 of sample, the upper end of the sample container are connected with the water level pipe 13 being connected with varying head flood pattern vertically, examination
The side wall of sample container is laid with water body and can pass freely through and permeable hole that soil body particle can not pass through, is cased with outside sample container
The transparent outer barrel 3 that upper and lower end is tightly connected with sample container respectively, the lower part of the transparent outer barrel, which is provided with towards varying head, notes
The No.1 drainpipe 7 of water system is provided with horizontal direction data collecting instrument 9 on the No.1 drainpipe, for use in acquisition No.1
Drain inner pipe water pressure and seepage discharge in the unit interval.The sample container lower part is provided with permeable stone 18, the bottom of sample container
In funnel-form and No. two drainpipes 10 towards varying head flood pattern are provided with, vertical number is provided on No. two drainpipes
According to Acquisition Instrument 12, for use in No. two draining inner pipe water pressures of acquisition and seepage discharge in the unit interval.
In the present embodiment, the upper end of the sample container is provided with the head cover 5 with its releasable connection and sealed processing, top
Lid is fixed with sample container by bolt 16, easy to disassemble.Positioned at the axis of sample container and close in the soil sample of sample container
Sample container side-walls are symmetrically embedding from top to bottom pore pressure gauge 15, for use in side wall during experiment is measured
The pore water pressure force value of each point, and head loss when measurement occurred level direction seepage.
In the present embodiment, the lower part of the sample container is provided with supporting table 4, and the side wall of sample container is by high intensity copper
Metal porous disc 19 be made, convenient for horizontal direction water ooze out, finally converge into the cylinder bottom of transparent outer barrel 3.Sample container it is interior
It is additionally provided with one layer of copper metal porous disc between wall and soil sample, prevents the soil body to be lost in by metal porous disc, and is trying every time
Before testing metal porous disc is cleaned using ultrasonic washing instrument.In the middle part of the lateral wall of sample container it is circumferentially spaced be provided with it is transparent
The connector 17 that outer barrel is fixedly connected prevents sample container under the action of hydraulic pressure from deforming.
In the present embodiment, the water injection pipe connect with head cover and carries out encapsulation process, is arranged between head cover 5 and sample container
Sealing strip prevents from seeping water.
In the present embodiment, the varying head flood pattern includes water tank 1, and the water tank upper end is provided with intelligent water pump
6, the output end of the intelligent water pump is connected with the funnel-form interconnecting piece 131 for being set to water level pipe upper end, the water level pipe
Madial wall, which is sticked, water level measuring instrument.To by the heights of water level of water level measuring measurement different moments and be output to electricity
Brain.
In the present embodiment, one is provided between horizontal direction data collecting instrument and transparent outer barrel on the No.1 drainpipe
Number valve 8 is provided with No. two valves 11 on No. two drainpipes between vertical data collecting instrument and sample container.
In the present embodiment, the bottom of the water level pipe is provided with No. three valves 14.
In the present embodiment, lower end and the drainage channel that sample container cooperatively forms of the transparent outer barrel are obliquely installed, institute
The least significant end for stating drainage channel is connected with No.1 drainpipe, to collect the water that horizontal direction seepage flow goes out.
In the present embodiment, the transparent outer barrel is made of transparent organic glass.
In the present embodiment, interval is laid with osculum 20 on the permeable stone, and the osculum aperture is 2mm.It is described
Water stone 18 makes the water of vertical seepage flow pass through, and collects the water vertically permeated by the bottom funnel-shaped portion of sample container.
A kind of test method applied to silt, the horizontal and vertical infiltration coefficient simultaneous determination device of cohesive soil is such as permeated
The smaller stickiness soil sample of coefficient, is measured using variable head permeability test, is included the following steps：
（1）Head cover is opened, with ultrasonic washing instrument washed samples container inside wall, in one layer of copper gold of sample container disposed inboard
Belong to porous disc, replace and clean every time metal porous disc before experiment, and silt to be measured or cohesive soil soil sample are packed into sample container,
Distinguish from top to bottom symmetrically embedding 5 close to sample container side-walls along sample container axis and same level simultaneously
Pore pressure gauge；
（2）Top cover simultaneously completes fixed, sealing；
（3）Intelligent water pump is opened, initial water pressure is set, No. three valves is closed and is filled to setting height into sample container, simultaneously
No.1 valve and No. two valves are opened, horizontal direction data collecting instrument and vertical data collecting instrument are opened；
（4）Open No. three valves of water level bottom of the tube；
（5）Wait for horizontal direction data collecting instrument, the horizontal direction seepage discharge in vertical data collecting instrument the surveyed unit interval and vertical
After seepage discharge is stablized, record respectivelyt 1、t 2Moment water level pipe water level test coupon container bottoms heighth 1、h 2And horizontal direction number
According to the water pressure for the No.1 drainpipe outflow water that Acquisition Instrument is surveyedp wh1Withp wh2, No. two drainpipes that vertical data collecting instrument is surveyed
The water pressure of outflow waterp wv1Withp wv2；
（7）Gathered data is input to computer, and horizontal direction when soil sample horizontal direction and vertical seepage flow is calculated while occurring is oozed
Saturating coefficient and vertical infiltration coefficient：
,,
In formula：k hHorizontal direction infiltration coefficient,k vVertical infiltration coefficient,LSoil body sample height,ASpecimen cross section area,a-
Water level pipe area of section,p wh1、p wh2 - t 1、t 2Moment No.1 drainpipe hydraulic pressure,p wv1、p wv2 - t 1、t 2No. two drainpipes of moment
Hydraulic pressure, γwThe severe of water,h 1、 h 2 - t 1、t 2Moment water level pipe water level test coupon container bottoms height.
The foregoing is merely presently preferred embodiments of the present invention, for the ordinary skill in the art, according to this hair
The horizontal and vertical infiltration coefficient simultaneous determination device of various forms of silts, cohesive soil and its experiment side are designed in bright introduction
Method does not need to performing creative labour, all according to the present patent application patent model without departing from the principles and spirit of the present invention
Done equivalent change, modification, replacement and modification are enclosed, the covering scope of the present invention should be all belonged to.
Claims (10)
1. the horizontal and vertical infiltration coefficient simultaneous determination device of a kind of silt, cohesive soil, including it is used to hold silt or cohesive soil
The sample container of soil sample, which is characterized in that the upper end of the sample container is connected with vertically to be connected with varying head flood pattern
Water level pipe, the side wall of sample container is laid with the permeable hole that soil body particle can not pass through, upper and lower end point is cased with outside sample container
The transparent outer barrel not being tightly connected with sample container, the lower part of the transparent outer barrel is provided with one towards varying head flood pattern
Number drainpipe is provided with horizontal direction data collecting instrument on the No.1 drainpipe, and the sample container lower part is provided with permeable stone,
The bottom of sample container is in funnel-form and is provided with No. two drainpipes towards varying head flood pattern, on No. two drainpipes
It is provided with vertical data collecting instrument.
2. the horizontal and vertical infiltration coefficient simultaneous determination device of silt according to claim 1, cohesive soil, feature exist
The upper end of, the sample container is provided with the head cover with its releasable connection and sealed processing, position in the soil sample of sample container
There is pore pressure gauge in the axis of sample container and close to sample container side-walls are symmetrically embedding from top to bottom.
3. the horizontal and vertical infiltration coefficient simultaneous determination device of silt according to claim 2, cohesive soil, feature exist
In, the lower part of the sample container is provided with supporting table, and the side wall of sample container is made of high intensity metal porous disc made of copper,
One layer of copper metal porous disc is additionally provided between the inner wall and soil sample of sample container, the lateral wall middle part of sample container is circumferentially
It is arranged at intervals with the connector being fixedly connected with transparent outer barrel.
4. the horizontal and vertical infiltration coefficient simultaneous determination device of silt according to claim 2 or 3, cohesive soil, feature
Be, the varying head flood pattern includes water tank, is vertically arranged with outlet pipe on the water tank, the outlet pipe it is upper
End is provided with intelligent water pump, and the output end of the intelligent water pump is connected with water injection pipe, the output end of the water injection pipe be set to
The funnel-form interconnecting piece of water level pipe upper end is connected, and the madial wall of the water level pipe, which is sticked, water level measuring instrument.
5. the horizontal and vertical infiltration coefficient simultaneous determination device of silt according to claim 4, cohesive soil, feature exist
In, it is provided with No.1 valve on the No.1 drainpipe between horizontal direction data collecting instrument and transparent outer barrel, described No. two
No. two valves are provided on drainpipe between vertical data collecting instrument and sample container.
6. the horizontal and vertical infiltration coefficient simultaneous determination device of silt according to claim 5, cohesive soil, feature exist
In the bottom of the water level pipe is provided with No. three valves.
7. the horizontal and vertical infiltration coefficient simultaneous determination device of silt, cohesive soil according to claim 1,2,3,5 or 6,
It is characterized in that, the lower end of the transparent outer barrel is obliquely installed with the drainage channel that sample container cooperatively forms, the drainage is logical
The least significant end in road is connected with No.1 drainpipe.
8. the horizontal and vertical infiltration coefficient simultaneous determination device of silt according to claim 7, cohesive soil, feature exist
In the transparent outer barrel is made of transparent organic glass.
9. the horizontal and vertical infiltration coefficient simultaneous determination device of silt according to claim 1, cohesive soil, feature exist
In interval is laid with osculum on the permeable stone, and the osculum aperture is 2mm.
10. a kind of examination applied to the silt, the horizontal and vertical infiltration coefficient simultaneous determination device of cohesive soil described in claim 6
Proved recipe method, which is characterized in that include the following steps：
（1）Head cover is opened, with ultrasonic washing instrument washed samples container inside wall, in one layer of copper gold of sample container disposed inboard
Belong to porous disc, replace and clean every time metal porous disc before experiment, and silt to be measured or cohesive soil soil sample are packed into sample container,
Distinguish from top to bottom symmetrically embedding 5 close to sample container side-walls along sample container axis and same level simultaneously
Pore pressure gauge；
（2）Top cover simultaneously completes fixed, sealing；
（3）Intelligent water pump is opened, initial water pressure is set, No. three valves is closed, setting height is filled into sample container, simultaneously
No.1 valve and No. two valves are opened, horizontal direction data collecting instrument and vertical data collecting instrument are opened；
（4）Open No. three valves of water level bottom of the tube；
（5）Wait for horizontal direction data collecting instrument, the horizontal direction seepage discharge in vertical data collecting instrument the surveyed unit interval and vertical
After seepage discharge is stablized, record respectivelyt 1、t 2Moment water level pipe water level test coupon container bottoms heighth 1、h 2And horizontal direction number
According to the water pressure for the No.1 drainpipe outflow water that Acquisition Instrument is surveyedp wh1Withp wh2, No. two drainpipes that vertical data collecting instrument is surveyed
The water pressure of outflow waterp wv1Withp wv2；
（6）Gathered data is input to computer, and horizontal direction when soil sample horizontal direction and vertical seepage flow is calculated while occurring is oozed
Saturating coefficient and vertical infiltration coefficient：
,,
In formula：k hHorizontal direction infiltration coefficient,k vVertical infiltration coefficient,LSoil body sample height,ASpecimen cross section area,a-
Water level pipe area of section,p wh1、p wh2 - t 1、t 2Moment No.1 drainpipe hydraulic pressure,p wv1、p wv2 - t 1、t 2No. two drainpipes of moment
Hydraulic pressure, γwThe severe of water,h 1、 h 2 - t 1、t 2Moment water level pipe water level test coupon container bottoms height.
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|---|---|---|---|
| CN201811040317.2A CN108801881A (en) | 2018-09-07 | 2018-09-07 | The horizontal and vertical infiltration coefficient simultaneous determination device of silt, cohesive soil and its test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811040317.2A CN108801881A (en) | 2018-09-07 | 2018-09-07 | The horizontal and vertical infiltration coefficient simultaneous determination device of silt, cohesive soil and its test method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723025A (en) * | 2018-12-28 | 2019-05-07 | 青岛理工大学 | Underground structure boundary seepage test device and using method thereof |
| CN109752304A (en) * | 2019-02-27 | 2019-05-14 | 中国地质大学（武汉） | A kind of varying head soil permeability coefficient measurement device |
| CN110208128A (en) * | 2019-07-08 | 2019-09-06 | 中铁十一局集团第五工程有限公司 | Rock sound water environment and dry simulation comprehensive test system |
| CN110687033A (en) * | 2019-11-13 | 2020-01-14 | 哈尔滨工业大学（深圳） | Penetration test device for researching internal erosion anisotropy of soil body under stress action |
| CN111896449A (en) * | 2020-07-14 | 2020-11-06 | 中国海洋大学 | Permeameter and method for measuring permeability coefficient of saturated silt |
| CN112986102A (en) * | 2021-04-23 | 2021-06-18 | 山东科技职业学院 | Building concrete permeability testing device |
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