CN108195742A - A kind of device and method for quickly measuring a variety of sand infiltration coefficients - Google Patents
A kind of device and method for quickly measuring a variety of sand infiltration coefficients Download PDFInfo
- Publication number
- CN108195742A CN108195742A CN201810144069.XA CN201810144069A CN108195742A CN 108195742 A CN108195742 A CN 108195742A CN 201810144069 A CN201810144069 A CN 201810144069A CN 108195742 A CN108195742 A CN 108195742A
- Authority
- CN
- China
- Prior art keywords
- soil sample
- sand
- drainpipe
- plexiglass cylinder
- sand soil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- G01N2015/0813—Measuring intrusion, e.g. of mercury
Abstract
The invention discloses a kind of device and methods for quickly measuring a variety of sand infiltration coefficients, and including osmotic system and image capturing system, the osmotic system includes plexiglass cylinder, and multilayer sand soil sample is equipped in the plexiglass cylinder；Every layer of soil sample bottom connects a pressure-measuring pipe；Described image acquisition system includes one for tracking the detector of the ray that radioactive isotope discharges in plexiglass cylinder, the present invention obtains the percolation flow velocity of each layer by the method for tagging, the head loss of each layer is obtained by pressure-measuring pipe, it disposably can rapidly determine the infiltration coefficient of a variety of sand soil samples, time is short, efficient.
Description
Technical field
The present invention relates to a kind of device and methods for quickly measuring a variety of sand infiltration coefficients, belong to geotechnical engineering correlation neck
Domain.
Background technology
Seepage problems are one of very important basic problems in geotechnical engineering, and the engineerings such as many foundation pits, tunnel are not all from
The influence of underground water is opened, many accidents are also due in soil caused by the seepage flow of water.For avoiding stream soil etc. in engineering construction
The antiseep of generation, tunnel-liner of seepage failure and the prediction of sedimentation are required for grasping the infiltration coefficient of the soil body, to the soil body
Infiltration coefficient be measured, so as to instruct the design and construction of underground engineering, indoor measurement sand infiltration system existing at present
Several devices every time can only measure a kind of soil sample, and realizing that the infiltration coefficient for once quickly measuring a variety of sands becomes needs
It solves the problems, such as.
Invention content
A kind of a variety of sand infiltration coefficients are quickly measured in view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide
Device and method.
The purpose of the present invention is what is be achieved through the following technical solutions：A kind of dress for quickly measuring a variety of sand infiltration coefficients
It puts, including osmotic system and image capturing system, the osmotic system includes plexiglass cylinder, the plexiglass cylinder
Inside it is horizontally installed with superposed second permeable stone and the first permeable stone positioned at lower part；The under-filled gravel of first permeable stone
Stone；Multilayer sand soil sample is equipped between second permeable stone and the first permeable stone；The plexiglass cylinder side wall is connected with
Two drainpipes, third drainpipe and multiple pressure-measuring pipes, pressure-measuring pipe quantity is identical with the number of plies of the sand soil sample, is separately positioned on
At the interface of each layer sand soil sample and at the interface of lowest level sand soil sample and the first permeable stone；Second drainpipe
Bottom of cylinder is arranged on, third drainpipe is arranged on above the second permeable stone；Described image acquisition system includes one for tracking
The detector for the ray that radioactive isotope discharges in plexiglass cylinder, the detector are mounted on the one of plexiglass cylinder
Side.
Further, it is provided with flow control valve on the third drainpipe.
Further, the water supply installation for injecting water to plexiglass cylinder is further included.
Further, the water supply installation includes aqua storage tank and the first drainpipe, and the outlet of first drainpipe is located at
Above plexiglass cylinder.
Further, it is provided with flow control valve on first drainpipe.
Further, scale is carved on the pressure-measuring pipe, scale value is the height value apart from plexiglass cylinder bottom surface.
A kind of method for quickly measuring a variety of sand infiltration coefficients, this method are specially：
(1) water is injected to plexiglass cylinder, controls injection rate, ensure that liquid level is constant in a definite value H；Stablize
Afterwards, isotopic tracer H is added in2 18O。
(2) detector acquisition radioactive tracer H2 18The movement locus of O.
(3) the Seepage flow time t in one layer of sand soil sample is obtained according to movement locus, so as to obtain percolation flow velocity v, v=
D/t, wherein, D is the thickness of this layer of sand soil sample；
(4) according to connection and the liquid level h in the pressure-measuring pipe at this layer of sand soil sample bottom surface, head loss Δ h is obtained,
Δ h=H-h；
(5) osmotic coefficient k, k=vD/ Δs h is calculated.
Compared with prior art, the beneficial effects of the invention are as follows：
1. the present invention can intuitively visual inspection to the percolation flow velocity of flow.
2. the present invention disposably can rapidly determine the infiltration coefficient of a variety of sand soil samples, the time is short, efficient.
3. the device simple structure, easy to operate.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
In figure, 1-aqua storage tank, the 2-the first drainpipe, the 3-the first pressure-measuring pipe, the 4-the second pressure-measuring pipe, the pressure measurement of 5-third
Pipe, the 6-the four pressure-measuring pipe, the 7-the first permeable stone, 8-sand gravel, 9-captation, the 10-the second drainpipe, 11-the first
Kind sand soil sample, 12-second sand soil sample, 13-the third sand soil sample, 14-the four kind of sand soil sample, 15-the second
Permeable stone, 16-third drainpipe, 17-computer, 18-detector
Specific embodiment
As shown in Figure 1, a kind of device for quickly measuring a variety of sand infiltration coefficients, including osmotic system and Image Acquisition system
System, the osmotic system include plexiglass cylinder 19, are horizontally installed in the plexiglass cylinder 19 superposed
Second permeable stone 15 and the first permeable stone 7 positioned at lower part；First permeable stone 7 and the second permeable stone 15 for make flow pass through but
Pass through soil particle；First permeable stone, 7 under-filled sand gravel 8；It is equipped between second permeable stone 15 and the first permeable stone 7
Multilayer sand soil sample (being 4 layers in figure)；19 side wall of plexiglass cylinder is connected with the second drainpipe 10, third drainpipe 16
With multiple pressure-measuring pipes, pressure-measuring pipe quantity is identical with the number of plies of the sand soil sample, is separately positioned on the boundary of each layer sand soil sample
At face and at the interface of lowest level sand soil sample and the first permeable stone 7；Second drainpipe 10 is arranged on bottom of cylinder,
Third drainpipe 16 is arranged on 15 top of the second permeable stone；Described image acquisition system includes one for tracking plexiglass cylinder
The detector for the ray that radioactive isotope discharges in 19, the detector are mounted on the side of plexiglass cylinder 19.
Hydraulic gradient i is multiplied by equal to osmotic coefficient k according to percolation flow velocity v, and hydraulic gradient i is removed equal to head loss Δ h
With percolation path D,
Thereby determine that assay method, it is as follows：
(1) water is injected to plexiglass cylinder (19), controls injection rate, ensure that liquid level is constant in a definite value H
(height apart from cylinder bottom surface)；After seepage stability, isotopic tracer H is added in2 18O.In figure, using aqua storage tank 1 and first
2 water filling of drainpipe, the outlet of the first drainpipe 2 is located at 19 top of plexiglass cylinder, by being arranged in the first drainpipe 2 or third
Flow control valve is provided on water pipe 16, to keep liquid level, i.e. head remains unchanged.The mark of seepage stability is to treat liquid
Face is highly stable and the second drainpipe drainage situation is stablized.
(2) detector acquisition radioactive tracer H2 18The movement locus of O.It is obtained according to the movement locus one
Seepage flow time t in layer sand soil sample, so as to obtain percolation flow velocity v, v=D/t, wherein, D is the thickness of this layer of sand soil sample；
(4) according to connection and the liquid level h in the pressure-measuring pipe at this layer of sand soil sample bottom surface, head loss Δ h is obtained,
Δ h=H-h；Head loss for the 4th kind of sand soil sample 14 is the liquid level h in the first pressure-measuring pipe 3 and liquid level in cylinder
The difference of height H；The head loss of the third sand soil sample 13 is that the liquid level h in the second pressure-measuring pipe 4 and liquid level in cylinder are high
Spend the difference of H；The head loss of second of sand soil sample 12 is the liquid level h and liquid level H in cylinder in third pressure-measuring pipe 5
Difference；The head loss of the first sand soil sample 11 be in liquid level h and cylinder in the 4th pressure-measuring pipe 6 liquid level H it
Difference；
(5) osmotic coefficient k, k=vD/ Δs h is calculated.
As a preferred option, scale is carved on the pressure-measuring pipe, scale value is apart from 19 bottom surface of plexiglass cylinder
Height value.
Claims (7)
1. a kind of device for quickly measuring a variety of sand infiltration coefficients, which is characterized in that including osmotic system and Image Acquisition system
System, the osmotic system include plexiglass cylinder (19), are horizontally installed in the plexiglass cylinder (19) positioned at upper
Second permeable stone (15) in portion and the first permeable stone (7) positioned at lower part；First permeable stone (7) under-filled sand gravel (8)；The
Multilayer sand soil sample is equipped between two permeable stones (15) and the first permeable stone (7)；Plexiglass cylinder (19) side wall connects
It is connected to the second drainpipe (10), third drainpipe (16) and multiple pressure-measuring pipes, the number of plies of pressure-measuring pipe quantity and the sand soil sample
It is identical, it is separately positioned at the interface of each layer sand soil sample and lowest level sand soil sample and the boundary of the first permeable stone (7)
At face；Second drainpipe (10) is arranged on plexiglass cylinder (19) bottom, and third drainpipe (16) is arranged on second thoroughly
Above water stone (15)；Described image acquisition system includes one for tracking the interior radioactive isotope release of plexiglass cylinder (19)
Ray detector, the detector be mounted on plexiglass cylinder (19) side.
2. the apparatus according to claim 1, which is characterized in that be provided with a flow control on the third drainpipe (16)
Valve.
3. the apparatus according to claim 1, which is characterized in that further include to inject water to plexiglass cylinder (19)
Water supply installation.
4. device according to claim 3, which is characterized in that the water supply installation includes aqua storage tank (1) and the first draining
It manages (2), the outlet of first drainpipe (2) is located above plexiglass cylinder (19).
5. device according to claim 4, which is characterized in that be provided with a flow control on first drainpipe (2)
Valve.
6. the apparatus according to claim 1, which is characterized in that scale is carved on the pressure-measuring pipe, scale value has for distance
The height value of machine glass cylinder (19) bottom surface.
A kind of 7. method for quickly measuring a variety of sand infiltration coefficients, which is characterized in that this method is based on described in claim 1
Device realization, specially：
(1) water is injected to plexiglass cylinder (19), controls injection rate, ensure that liquid level is constant in a definite value H；Stablize
Afterwards, isotopic tracer H is added in2 18O。
(2) detector acquisition radioactive tracer H2 18The movement locus of O.
(3) the Seepage flow time t in one layer of sand soil sample is obtained according to movement locus, so as to obtain percolation flow velocity v, v=D/t,
Wherein, D is the thickness of this layer of sand soil sample；
(4) according to connection and the liquid level h in the pressure-measuring pipe at this layer of sand soil sample bottom surface, head loss Δ h, Δ h are obtained
=H-h；
(5) osmotic coefficient k, k=vD/ Δs h is calculated.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144069.XA CN108195742A (en) | 2018-02-12 | 2018-02-12 | A kind of device and method for quickly measuring a variety of sand infiltration coefficients |
| PCT/CN2018/110314 WO2019153782A1 (en) | 2018-02-12 | 2018-10-15 | Apparatus and method for quickly measuring multiple sandy soil infiltration coefficients |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144069.XA CN108195742A (en) | 2018-02-12 | 2018-02-12 | A kind of device and method for quickly measuring a variety of sand infiltration coefficients |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108195742A true CN108195742A (en) | 2018-06-22 |
Family
ID=62593872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810144069.XA Pending CN108195742A (en) | 2018-02-12 | 2018-02-12 | A kind of device and method for quickly measuring a variety of sand infiltration coefficients |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108195742A (en) |
| WO (1) | WO2019153782A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297872A (en) * | 2018-11-30 | 2019-02-01 | 山东科技大学 | Based on isotope tracer technique induced infiltration grouting test device and test method |
| WO2019153782A1 (en) * | 2018-02-12 | 2019-08-15 | 浙江大学 | Apparatus and method for quickly measuring multiple sandy soil infiltration coefficients |
| CN110146395A (en) * | 2019-05-14 | 2019-08-20 | 浙江大学 | A kind of laboratory testing rig measuring multilayer soil sample seepage inflow erosion characteristic under pressure in situ |
| CN110736822A (en) * | 2019-11-26 | 2020-01-31 | 长安大学 | method for simulating groundwater evaporation and soil column experimental device thereof |
| CN111735749A (en) * | 2020-07-28 | 2020-10-02 | 山东科技大学 | Isotope labeling-based permeability coefficient and permeability measurement system and measurement method |
| CN111781121A (en) * | 2020-07-03 | 2020-10-16 | 四川大学 | Subway surface subsidence early warning system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672493B (en) * | 2019-10-23 | 2022-03-29 | 哈尔滨工业大学 | Method for extracting microscopic seepage path of asphalt mixture |
| CN112797963A (en) * | 2021-01-18 | 2021-05-14 | 王春林 | Engineering cost ware for desert planting |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130143Y (en) * | 2007-12-19 | 2008-10-08 | 中国核工业华兴建设有限公司 | Porous medium material permeability coefficient determinator |
| CN202735215U (en) * | 2012-07-23 | 2013-02-13 | 中国神华能源股份有限公司 | Device for detecting permeability coefficient of soil |
| CN202869938U (en) * | 2012-11-06 | 2013-04-10 | 中国化学工程第十三建设有限公司 | Constant head soil layer permeability coefficient tester |
| CN204228377U (en) * | 2014-10-14 | 2015-03-25 | 河海大学 | A kind of multifunction experiment apparatus of hydrogeological parameter synthesis measuring |
| CN105181549A (en) * | 2015-08-27 | 2015-12-23 | 中原工学院 | Test system and method for testing seepage and solidification time characteristic of grouting |
| CN105588796A (en) * | 2015-12-17 | 2016-05-18 | 扬州大学 | Device for accurately and rapidly determining permeability coefficient of soil |
| CN105823715A (en) * | 2016-03-18 | 2016-08-03 | 山东大学 | Rock mass seepage path observation device based on isotopic tracing technology and application method thereof |
| CN105866005A (en) * | 2016-05-23 | 2016-08-17 | 河海大学 | Intelligent testing device for soil mass layered permeability characteristic analysis, measuring method and evaluation method |
| CN105866001A (en) * | 2016-04-18 | 2016-08-17 | 三峡大学 | Device and method for measuring rock-soil body osmotic coefficient based on water-based fluorescent agent dilution method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101101707B1 (en) * | 2009-07-21 | 2012-01-05 | 한국지질자원연구원 | A ground contact type artificial rainfall apparatus for estimating infiltration characteristics into the ground and an in-situ infiltration velocity measurement equipment using thereof |
| CN104819925A (en) * | 2015-05-14 | 2015-08-05 | 湘潭大学 | Comprehensive test equipment for observing permeation and settlement of accumulated gravel soil |
| CN107121369A (en) * | 2017-03-22 | 2017-09-01 | 吉林大学 | A kind of full-automatic Darcy's law experimental system |
| CN207908316U (en) * | 2018-02-12 | 2018-09-25 | 浙江大学 | A kind of device quickly measuring a variety of sand infiltration coefficients |
| CN108195742A (en) * | 2018-02-12 | 2018-06-22 | 浙江大学 | A kind of device and method for quickly measuring a variety of sand infiltration coefficients |
-
2018
- 2018-02-12 CN CN201810144069.XA patent/CN108195742A/en active Pending
- 2018-10-15 WO PCT/CN2018/110314 patent/WO2019153782A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130143Y (en) * | 2007-12-19 | 2008-10-08 | 中国核工业华兴建设有限公司 | Porous medium material permeability coefficient determinator |
| CN202735215U (en) * | 2012-07-23 | 2013-02-13 | 中国神华能源股份有限公司 | Device for detecting permeability coefficient of soil |
| CN202869938U (en) * | 2012-11-06 | 2013-04-10 | 中国化学工程第十三建设有限公司 | Constant head soil layer permeability coefficient tester |
| CN204228377U (en) * | 2014-10-14 | 2015-03-25 | 河海大学 | A kind of multifunction experiment apparatus of hydrogeological parameter synthesis measuring |
| CN105181549A (en) * | 2015-08-27 | 2015-12-23 | 中原工学院 | Test system and method for testing seepage and solidification time characteristic of grouting |
| CN105588796A (en) * | 2015-12-17 | 2016-05-18 | 扬州大学 | Device for accurately and rapidly determining permeability coefficient of soil |
| CN105823715A (en) * | 2016-03-18 | 2016-08-03 | 山东大学 | Rock mass seepage path observation device based on isotopic tracing technology and application method thereof |
| CN105866001A (en) * | 2016-04-18 | 2016-08-17 | 三峡大学 | Device and method for measuring rock-soil body osmotic coefficient based on water-based fluorescent agent dilution method |
| CN105866005A (en) * | 2016-05-23 | 2016-08-17 | 河海大学 | Intelligent testing device for soil mass layered permeability characteristic analysis, measuring method and evaluation method |
Non-Patent Citations (2)
| Title |
|---|
| 叶为民等: "新型多功能渗透仪与达西定律实验教学" * |
| 李松林;: "采用放射性同位素观测红山水库坝基渗流" * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153782A1 (en) * | 2018-02-12 | 2019-08-15 | 浙江大学 | Apparatus and method for quickly measuring multiple sandy soil infiltration coefficients |
| CN109297872A (en) * | 2018-11-30 | 2019-02-01 | 山东科技大学 | Based on isotope tracer technique induced infiltration grouting test device and test method |
| CN110146395A (en) * | 2019-05-14 | 2019-08-20 | 浙江大学 | A kind of laboratory testing rig measuring multilayer soil sample seepage inflow erosion characteristic under pressure in situ |
| WO2020228230A1 (en) * | 2019-05-14 | 2020-11-19 | 浙江大学 | Indoor test apparatus for measuring seepage erosion characteristics of multilayer soil samples under in-situ pressure |
| CN110736822A (en) * | 2019-11-26 | 2020-01-31 | 长安大学 | method for simulating groundwater evaporation and soil column experimental device thereof |
| CN111781121A (en) * | 2020-07-03 | 2020-10-16 | 四川大学 | Subway surface subsidence early warning system |
| CN111735749A (en) * | 2020-07-28 | 2020-10-02 | 山东科技大学 | Isotope labeling-based permeability coefficient and permeability measurement system and measurement method |
| CN111735749B (en) * | 2020-07-28 | 2022-08-05 | 山东科技大学 | Isotope labeling-based permeability coefficient and permeability measurement system and measurement method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019153782A1 (en) | 2019-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207908316U (en) | A kind of device quickly measuring a variety of sand infiltration coefficients | |
| CN108195742A (en) | A kind of device and method for quickly measuring a variety of sand infiltration coefficients | |
| CN107167411B (en) | Visible model testing device and method is permeated in piping in seepage liquefaction | |
| CN108318396B (en) | Test method of tailing dam seepage field similarity simulation test system | |
| CN104330533B (en) | The test unit of tunnel surrounding landslide under simulated rainfall and seepage action of ground water and method | |
| CN104880396B (en) | The soil body two is to flow model in porous media device and method of testing under outside charge function | |
| CN108088982B (en) | Simulate the Experimental Method in Laboratory of fine grained seepage inflow erosion inside deep aquifers sand | |
| CN206756653U (en) | Determine head and varying head soil permeability coefficient measure combination unit | |
| CN206339470U (en) | Debris flow dam dam foundation soil horizontal infiltration experimental rig | |
| CN108035301B (en) | The experimental rig and test method that suspended cut-off wall anti-seepage effect is simulated under a kind of seepage liquefaction | |
| CN109270244A (en) | Solute transfer analogue observation device in soil under a kind of rainfall | |
| CN111337650B (en) | Multifunctional test device for researching seepage damage mechanism of underground engineering soil body | |
| CN202735215U (en) | Device for detecting permeability coefficient of soil | |
| CN206470116U (en) | A kind of experimental rig for simulating the lower basement bottom board stress of artesian water effect | |
| CN204142710U (en) | The test unit of tunnel surrounding landslide under simulated rainfall and seepage action of ground water | |
| Boersma | Field measurement of hydraulic conductivity above a water table | |
| CN104977149A (en) | Simulated test apparatus and method for flow and sediment transport | |
| CN103389260A (en) | Laboratory simulation test method for researching underground water seepage obstruction caused by pile foundation | |
| CN203821296U (en) | Model test device for cohesiveless soil piping failure development process | |
| CN203824878U (en) | Test device for simulating seepage prevention of embankment foundation engineering soil | |
| CN108414728A (en) | Weak soil displacement field and the visual experimental rig of seepage field and test method under a kind of vacuum method | |
| CN203821294U (en) | Model test device for simulating reservoir earth dam seepage damage developing process | |
| Yao et al. | Study on permeability and collapsibility characteristics of sandy loess in northern Loess Plateau, China | |
| Ye et al. | Seepage behavior of an inclined wall earth dam under fluctuating drought and flood conditions | |
| CN110261277A (en) | A kind of determining experimental rig and method for being saturated soil sample critical hydraulic gradient in situ |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |