CN209280521U - A kind of geotextiles silting and permeability simulation experimental device - Google Patents
A kind of geotextiles silting and permeability simulation experimental device Download PDFInfo
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- CN209280521U CN209280521U CN201822042868.4U CN201822042868U CN209280521U CN 209280521 U CN209280521 U CN 209280521U CN 201822042868 U CN201822042868 U CN 201822042868U CN 209280521 U CN209280521 U CN 209280521U
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- geotextiles
- silting
- lucite tube
- permeability
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Abstract
The utility model discloses a kind of geotextiles silting and permeability simulation experimental devices, including liquid input system and material filling system, the material filling system includes pedestal and multiple transparent organic glass pipes 3, the lucite tube 3 stacks gradually setting from top to bottom, it is connected between the lucite tube 3 using hubbed flange, geotextiles clamping plate and sealing ring are installed on the hubbed flange, the geotextiles clamping plate is detachable, and the liquid input system is connected to lucite tube 3.The device can carry out permeability test when single layer and multilayer filler；The infiltration of multilayer geotextiles can be carried out to test with silting；It can carry out the silting and permeability test of drying and watering cycle effect retrofilling material and geotextiles.
Description
Technical field
The utility model relates to test Hydraulie Conductivity of Geotetile technical field, specially a kind of geotextiles silting and infiltration
Rate imitative experimental appliance.
Background technique
In the slope project of mine and highway, it is necessary to which the drainage pipe of embedded package different type geotextiles is to reduce side slope
In level of ground water, avoid destroying because of the excessively high initiation slope instability of water level.Drainage pipe, can be because of soil after the long-time service of decades
Work cloth surface, which generates silting deposition, to cause to fail, and underground water can not flow out.To analyze this deposition silting mechanism, need to carry out interior
Simulated experiment discloses the silting process and influence factor of geotextiles, the changing rule of its permeability of synchronism detection, to be the later period
Design and the silting prevention and treatment of drainage pipe provide basis.
Test to all kinds of soil bodys and geotextiles permeability, technology is mature at present, mainly uses two methods, i.e., often
Head permeability test and variable head permeability test, and form national standard (GB/T 15789-2016, geotextiles and its related
The test of vertical Penetration Signature when product is zero load；GB/T 50123-1999, Standard for test methods of earthworks).The main original of test
Reason is the volume by passing through the water of vertical direction sample in cooling water of units of measurement time, calculates and obtains infiltration coefficient.It is for infiltration
The biggish sample of number, generallys use hydrostatic head method, and the sample small for infiltration coefficient then preferably uses variable water level method to test.According to
When national standard is tested, properties of samples is uniform to be existed without interlayer.
To geotextiles silting phenomenon and mechanism study, usually carried out using simulating lab test.Domestic easily China is strong etc.
(2005), (2011), Gu Gaoli etc. such as (2008), Wu Jun etc. such as Jiang Long etc. (2006), Zhang Guojun (2008), Duan Xiangbao
(2011), Hu Xuetao etc. (2012) and Li Shibo etc. (2013) devise it is suitable for oneself research field, can carry out
The experimental provision that permeability is tested after silting.These devices generally include water circulation system (pump pressurizing unit, water inlet pipe, water outlet
Pipe and connecting pipeline), sand and geotextiles sample filling system, several parts such as pressure and infiltration monitoring system.Water inlet system
Be divided into two classes: 1) from bottom apply high pressure make water from water storage container enter experimental channel again from top flow out, then fluid into
Enter post-processing stages, when the method tests permeability, the hydraulic pressure of application needs to be greater than gravity, and when calculating is the equal of that constant head is surveyed
The mutation method of examination needs to take into account the pressure of application in formula；2) water is promoted to using peristaltic pump disposed above
Water tank, then water carries out experimental channel from water tank, penetrates filler under Gravitative Loads, flows out from outlet at bottom, then
Carry out the post analysis stage.According to experiment purpose difference, arrangement geotechnique is distributed in duct bottom in part Experiment pipeline, and part is directly
Filling sand is not laid with geotextiles, only one layer of experimental channel, is disposed with pressure monitor system in side wall some.
In terms of existing technology, when carrying out penetration clogging experiment to earthen materia, various experimental facilities can carry out single
The permeability of filler is tested, and in use, there are problems that the following aspects: 1) great soil group filled in experiment is
Homogeneous material, if material is multilayer, the material permeability coefficient measured is average value, and the infiltration coefficient of single layer can not obtain；2)
Geotextiles can only arrange one layer, and cloth is postponed and can not be replaced, after can not carrying out same solution different time effect
Silting comparative experiments；3) water level control is relatively easy, can not carry out water level lifting and reduce circulation experiment, after analyzing ringing
The infiltration coefficient of filler and the infiltration coefficient of geotextiles are tested；4) in experimentation, some equipment are provided with pressure monitoring
Equipment, sample position is arranged in few side walls, therefore can not sample during the experiment, analyzes initial soln after different time
The variation of ingredient and concentration.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of tests of the permeability of geotextiles and deposition silting simulation
Experimental provision, the permeability that geotextiles and filler may be implemented are tested, and the long period of soaking and infiltration of geotextiles can also be carried out
Saturating rate synchronism detection experiment.
In order to reach above-mentioned technical purpose, the utility model is realized especially by following technical scheme:
A kind of geotextiles silting and permeability simulation experimental device, including liquid input system and material filling system, institute
The material filling system stated includes pedestal and multiple transparent organic glass pipes, and the lucite tube stacks gradually from top to bottom
Setting is connected using hubbed flange between the lucite tube, be equipped on the hubbed flange geotextiles clamping plate with
Sealing ring, the geotextiles clamping plate is detachable, and the liquid input system is connected to lucite tube.
The liquid input system includes the first water tank and pressure pump, and first water tank and pressure pump pass through connection
Pipeline is connected to least significant end lucite tube.
Spinner flowmeter and valve are disposed between the pressure pump and least significant end lucite tube.
The bottom end closure of the lucite tube, top are equipped with apertured partition.
Side wall of the lucite tube close to bottom is provided with drainpipe, is provided with valve on the drainpipe,
It is used to open or is closed.
The experimental provision further includes liquid output processing system, and the liquid output processing system includes successively leading to
Cross flowmeter, pressure gauge and the water tank of connecting pipeline connection.
The utility model has the following beneficial effects:
1) hydrostatic head method is used, the number of segment of the glass tube by changing connection can carry out filler not of the same race and soil
The infiltration coefficient of work cloth is tested；
2) pre-buried geotechnique is distributed in filler, carries out the immersion test of chemical solution, can simulate geotextiles in side slope
In with fluid Long Term Contact process the permeability and table of geotextiles can be obtained by constituent analysis, permeability and structured testing
The variation characteristic of face structure；
3) by test different location and the ingredient of different time chemical solution and the variation of concentration, it can reflect solution warp
The long-term filtered changing rule of over packing material and geotextiles, discloses the process and efficiency of chemical reaction；
4) by long-term multiple chemical solution drying and watering cycle immersion test, geotextiles and filler can be simulated in length
Under phase geological conditions, the changing rule of permeability and microstructure more really reflects the silting process of geotextiles；
5) it during the experiment, can synchronize and carry out permeability test, obtain the change of the mean permeability of material at any time
Law discloses the changing rule of the factors such as type, depth, the action time of infiltration coefficient and chemical solution.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model experimental provision；
In figure: 1, pressure pump, 2, spinner flowmeter, 3, lucite tube, 31, lucite tube a, 32, lucite tube
B, 33, lucite tube c, 34, lucite tube d, 35, lucite tube e, 4, partition.
Specific embodiment
Below in conjunction with the utility model specific embodiment, technical solutions of the utility model are carried out clearly and completely
Description, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.It is based on
The embodiments of the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments are fallen within the protection scope of the utility model.
In practical Geological Engineering, row's infiltration system is generally wrapped in pvc pipe outer surface by geotextiles, and connects out side slope
Outside, for geotextiles since physics and chemical colmatage act on, surface pore is deposited object filling, and Penetration Signature is prolonged with the time
It is long to reduce, it is therefore desirable to the silting mechanism of geotextiles is disclosed by simulating lab test.The utility model devises a kind of infiltration
The pipeline of great soil group fill area is changed to segmented by silting imitative experimental appliance, and in every segment pipe side-wall hole, external valve
, geotextiles are placed at adjacent tube ends, are clamped with sealing ring.After change, have the characteristics that following: 1) can be
The different types of soil body material of filling in the pipeline of different sections, while filling more uniform；2) single layer can be carried out to fill with multilayer
Permeability test when filling chock material；3) infiltration of multilayer geotextiles can be carried out to test with silting；4) drying and watering cycle effect can be carried out
The silting and permeability test of retrofilling material and geotextiles.It is specific as shown in Figure 1.
A kind of geotextiles silting and permeability simulation experimental device, including liquid input system, material filling system and defeated
Accepting/ordering system, wherein material filling system includes pedestal and transparent organic glass pipe a, b, c, d, e (31~35), and liquid is defeated
Enter system include the first water tank and pressure pump 1, liquid output processing system include pass sequentially through connecting pipeline connection flowmeter,
Pressure gauge and the second water tank.
Lucite tube a, b, c, d, e (31~35) stack gradually setting, the bottom end closure of machine glass tube, top from top to bottom
End is equipped with apertured partition 4, and junction is connected using hubbed flange, is equipped with geotextiles clamping plate and sealing ring on hubbed flange,
Geotextiles clamping plate is detachable, is provided with drainpipe on the side wall of lucite tube a, b, c, d, e (31~35) close to bottom, arranges
It is provided with valve on water pipe, is used to open or is closed.
First water tank and pressure pump 1 are connected to by connecting pipeline with lucite tube e 35, in pressure pump 1 and organic glass
Spinner flowmeter 2 and valve are respectively arranged in the connecting pipeline of pipe e 35.
Preferably, 1 flow 6l/min of pressure pump adjusts flow velocity, 2 range of flow 40- of spinner flowmeter using potentiometer
The internal diameter of 400l/h, lucite tube a~e (31~35) are 200mm, and lucite tube a, b, c, d's ((31~34)) is a height of
A height of 10cm of 20cm, lucite tube e 35.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these examples can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of geotextiles silting and permeability simulation experimental device, which is characterized in that filled including liquid input system and material
System is filled out, the material filling system includes pedestal and multiple transparent organic glass pipes (3), the lucite tube (3)
Setting is stacked gradually from top to bottom, is connected between the lucite tube (3) using hubbed flange, on the hubbed flange
Geotextiles clamping plate and sealing ring are installed, the geotextiles clamping plate is detachable, the liquid input system and organic glass
Manage (3) connection.
2. a kind of geotextiles silting according to claim 1 and permeability simulation experimental device, which is characterized in that described
Liquid input system includes the first water tank and pressure pump (1), and first water tank and pressure pump (1) are by connecting pipeline and most
Low side lucite tube (3) connection.
3. a kind of geotextiles silting according to claim 2 and permeability simulation experimental device, which is characterized in that described
Spinner flowmeter (2) and valve are disposed between pressure pump (1) and least significant end lucite tube (3).
4. a kind of geotextiles silting according to claim 1 and permeability simulation experimental device, which is characterized in that described
The bottom end closure of lucite tube (3), top are equipped with apertured partition (4).
5. a kind of geotextiles silting according to claim 4 and permeability simulation experimental device, which is characterized in that described
Side wall of the lucite tube (3) close to bottom is provided with drainpipe, is provided with valve on the drainpipe.
6. a kind of geotextiles silting according to claim 1 and permeability simulation experimental device, which is characterized in that described
Experimental provision further includes liquid output processing system, and the liquid output processing system includes passing sequentially through connecting pipeline connection
Flowmeter, pressure gauge and water tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822042868.4U CN209280521U (en) | 2018-12-06 | 2018-12-06 | A kind of geotextiles silting and permeability simulation experimental device |
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| CN201822042868.4U CN209280521U (en) | 2018-12-06 | 2018-12-06 | A kind of geotextiles silting and permeability simulation experimental device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406367A (en) * | 2018-12-06 | 2019-03-01 | 中国科学院武汉岩土力学研究所 | A kind of geotextiles silting and permeability simulation experimental device |
| CN113804092A (en) * | 2021-09-17 | 2021-12-17 | 北京科技大学 | Experimental device and method for measuring deformation of filled retaining wall geotextile |
-
2018
- 2018-12-06 CN CN201822042868.4U patent/CN209280521U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406367A (en) * | 2018-12-06 | 2019-03-01 | 中国科学院武汉岩土力学研究所 | A kind of geotextiles silting and permeability simulation experimental device |
| CN113804092A (en) * | 2021-09-17 | 2021-12-17 | 北京科技大学 | Experimental device and method for measuring deformation of filled retaining wall geotextile |
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