CN109932300A - A kind of self-starting drainage by suction experimental rig - Google Patents
A kind of self-starting drainage by suction experimental rig Download PDFInfo
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- CN109932300A CN109932300A CN201910234771.XA CN201910234771A CN109932300A CN 109932300 A CN109932300 A CN 109932300A CN 201910234771 A CN201910234771 A CN 201910234771A CN 109932300 A CN109932300 A CN 109932300A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000002689 soil Substances 0.000 claims abstract description 34
- 238000012360 testing method Methods 0.000 claims abstract description 32
- 239000007921 spray Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 7
- 239000004746 geotextile Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 238000001556 precipitation Methods 0.000 abstract description 8
- 238000011161 development Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 description 8
- 230000008595 infiltration Effects 0.000 description 8
- 238000005259 measurement Methods 0.000 description 6
- 230000035699 permeability Effects 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 210000000476 body water Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention provides a kind of self-starting drainage by suction experimental rig, including model casing, upper water-out mouth, lower outlet, anti- mud sieve plate, outlet pipe, transparent thin conduit, spray head, top cover, adjustable water injector, lower outlet is arranged in model casing, upper water-out mouth, two pieces of anti-mud sieve plates are set between two outlet on top and bottom mouth, anti- mud sieve plate and model chamber interior wall seal, the test soil body is placed between two pieces of anti-mud sieve plates, top cover is set at the top of model casing, spray head, several apopores are set at model casing difference elevation, side apopore connects several transparent thin conduits, side apopore connects several outlet pipes.The water spray of its analog Precipitation Process, measure the drainage rates of discharge outlet, height variation by observing transparent thin conduit liquid level within a certain period of time judge that respective cavities body position takes the size shape and development of water and cavity formation away, can make the functional relation of tested negative pressure self-starting drainpipe drainage rates and precipitation rate.
Description
Technical field
The invention belongs to geotechnical engineering fields, are related to a kind of side slope self-starting drainage by suction experimental rig, are suitable for side slope
The negative pressuren zone cavity analysis measurement of self-starting drainage by suction, simulating natural environment self-starting draining compartment analysis, quantitative and qualitative are surveyed
Determine the examination of influence of the factors such as sand sample infiltration coefficient, rainfall duration interval for side slope self-starting drainage by suction negative pressuren zone size
Experiment device.
Background technique
A large amount of landslides are because rainfall infiltration causes slopes level of ground water to rise and induce.Slopes level of ground water rises
The cumulative process of one rainfall infiltration takes the drainage measure of continuous and effective, and the underground water of slopes is infiltrated in discharge in real time, can subtract
The generation of few a large amount of landslide disasters.
The arterial drainage measure of current side slope has: surface drainage ditch and weeper drain, sump draw water, horizontal drainage channel,
Subdrainage hole etc..The validity of the top drainages measure such as surface drainage ditch and weeper drain, draining is difficult to ensure；Sump
It draws water and needs power and regular administration, energy consumption is big, and use cost is high；Horizontal drainage channel is because inclination angle is small, natural drainage
It is easy to happen blocking in journey, influences the long-term effectiveness of drainage measure；Subdrainage hole long construction period, complex process, expense
It is high.Side slope negative pressure self-starting drainage system and method are a kind of slope underground water drainage measures of continuous and effective, by slope
In vivo formed draining negative pressure, force around underground water rapidly enter negative pressuren zone and be discharged outside slopes.But at present for its draining
There are also to be studied for the research of negative pressuren zone cavity size, the drainage situation in practical rainfall and effect in the process.
Summary of the invention
The present apparatus can study the mistake of self-starting drainage by suction on the basis of quantitative measurment sand sample infiltration coefficient
The pressure change situation of different location negative pressuren zone analyzes the negative pressure cavity situation of change of negative pressuren zone simultaneously and is simulating certainly in journey
In right rainfall, the variation of the effect and all data of side slope self-starting drainage by suction.
The technical solution of the present invention is as follows: a kind of self-starting drainage by suction experimental rig, including model casing, upper water-out mouth, under
Water outlet, anti-mud sieve plate, outlet pipe, transparent thin conduit, spray head, top cover, adjustable water injector, the bottom of the model casing
Lower outlet is set, the top of model casing is arranged upper water-out mouth, two pieces of anti-mud sieve plates is arranged between upper water-out mouth and lower outlet,
Anti- mud sieve plate and model chamber interior wall seal, and the test soil body is placed between two pieces of anti-mud sieve plates, and top cover, top are arranged at the top of model casing
Connection spray head is covered, spray head is connect with adjustable water injector, and several apopores, side water outlet are arranged at model casing difference elevation
Hole connects several transparent thin conduits, and other side apopore connects several outlet pipes, permeable hole is arranged on the anti-mud sieve plate, prevents
Filtering material is wrapped up on mud sieve plate.
Further, the model casing uses transparent acrylic material, places rubber protection pad under model casing.
Further, the transparent thin conduit shows water pipe for equidistant observed stage.
Further, the outlet pipe is scalable and adjustment length, is extend into the cavity of the test soil body as needed.
Further, geotextiles can be used in the filtering material.
Further, the lower outlet is connect with aqueduct, and the water outlet of aqueduct is put into graduated cylinder.
The present invention uses that specific step is as follows:
(1) model casing is placed；
(2) it is packed into the test soil body, slowly adjusting adjustable water injector makes model tank test soil body water suction saturation, lower section
Water is full of in the cavity body of anti-mud sieve plate and model casing；
(3) adjustable water injector is adjusted, water level did not had upper water-out mouth slightly, because of the presence of upper water-out mouth, model casing
Head is kept constant on the interior test soil body, is tested seepage through soil mass water outlet at this time and is discharged into graduated cylinder by lower outlet；
(4) according to Darcy's law and darcy permeability test, two outlet on top and bottom mouth head difference is measured, time segment records graduated cylinder and carves
Degree reading variation, calculates drainage rates, calculates the infiltration coefficient of the test soil body；
(5) adjust adjustable water injector, carry out continuing simulated precipitation, test at this time the soil body due to drainage by suction rate with
Seepage flow speed occur the reason of difference can test inside soil body formed negative pressuren zone cavity, observe and measure lower outlet drainage rates
With measurement certain time in the transparent thin conduit fluctuation in stage of different location, come judge test the soil body lasting rainfall natural environment
The negative pressuren zone empty cavity position pump-out and cavity size change in shape situation of lower different location；
(5) adjustable water injector is adjusted, the spaced simulation precipitation in a period of time is carried out, observes and measures lower outlet row
The transparent thin conduit fluctuation in stage of different location in water speed rate and measurement certain time, to judge to test the soil body in interval rainfall
The negative pressuren zone empty cavity position pump-out of different location and cavity size change in shape situation and development under natural environment；
(6) be put into the different type test soil body, measure different soil properties, different infiltration coefficient the test soil body in different rainfalls
The variation of negative pressure self-starting drainpipe drainage rates and negative pressuren zone cavity situation of change under environment.
Beneficial effects of the present invention are as follows:
1. the present invention is to pass through Darcy's law and darcy permeability test by regulating and controlling adjustable water injector flow parameter
Method is measured the coefficient of permeability K of the test soil body in model casing.
2. the present invention can carry out the water spray of simulated precipitation process, the drainage rates of discharge outlet are measured, it is transparent by observing
Thin conduit within a certain period of time liquid level height variation judge respective cavities body position take away water and cavity formation size
Shape and development.
3. the present invention measures drainage rates by draining, tested negative pressure self-starting drainpipe draining speed can be made
The functional relation of rate and precipitation rate.
4. the present invention had not only prevented influence of the soil body silt loss for experiment by the design of anti-mud sieve plate, but also guaranteed
The accuracy of drainage rates measurement makes to operate more accurate reliable.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is side view of the invention；
Fig. 3 is the partial schematic diagram of anti-mud sieve plate；
In figure, model casing 1, upper water-out mouth 2, lower outlet 3, anti-mud sieve plate 4, outlet pipe 5, transparent thin conduit 6, spray head 7,
Top cover 8, adjustable water injector 9, permeable hole 10, filtering material 11, rubber protection pad 12, graduated cylinder 13, the test soil body 14.
Specific embodiment
The invention will be further described with example with reference to the accompanying drawing.
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate this hair
It is bright rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, art technology
Personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Fixed range.
Embodiment 1
As shown in Figure 1-3, a kind of self-starting drainage by suction experimental rig, including model casing 1, upper water-out mouth 2, lower outlet
3, anti-mud sieve plate 4, outlet pipe 5, transparent thin conduit 6, spray head 7, top cover 8, adjustable water injector 9, the bottom of the model casing 1
Lower outlet 3 is arranged in portion, and upper water-out mouth 2 is arranged in the top of model casing 1, and two pieces are arranged between upper water-out mouth 2 and lower outlet 3 and prevents
Mud sieve plate 4, anti-mud sieve plate 4 are sealed with 1 inner wall of model casing, and the test soil body 14 is placed between two pieces of anti-mud sieve plates 4, model casing 1
Top cover 8 is arranged in top, connects spray head 7 on top cover 8, and spray head 7 is connect with adjustable water injector 9, sets at the different elevations of model casing 1
Several apopores are set, side apopore connects several transparent thin conduits 6, and other side apopore connects several outlet pipes 5, described
Permeable hole 10 is set on anti-mud sieve plate 4, wraps up filtering material 11 on anti-mud sieve plate 4.
Model casing 1 uses transparent acrylic material, and model casing 1 is lower to place rubber protection pad 12.Transparent thin conduit 6 is between waiting
Show water pipe away from observed stage.Outlet pipe 5 is scalable and adjustment length, extend into the cavity of the test soil body 14 as needed
In.Filtering material 11 uses geotextiles.Lower outlet 3 is connect with aqueduct, and the water outlet of aqueduct is put into graduated cylinder 13.
The present invention uses that specific step is as follows:
(1) model casing 1 is placed；
(2) it is packed into the test soil body 14, slowly adjusting adjustable water injector 9 makes test soil body water suction saturation in model casing 1,
Water is full of in the cavity body of the anti-mud sieve plate in lower section and model casing；
(3) adjustable water injector 9 is adjusted, water level did not had upper water-out mouth 2 slightly, because of the presence of upper water-out mouth 2, model
Head is kept constant on the test soil body 14 in case 1, is tested 14 seepage flow water outlet of the soil body at this time by lower outlet 3 and is discharged into graduated cylinder 13
It is interior；
(4) according to Darcy's law and darcy permeability test, two outlet on top and bottom mouth head difference is measured, time segment records graduated cylinder and carves
Degree reading variation, calculates drainage rates, calculates the infiltration coefficient of the test soil body 14；
(5) adjustable water injector 9 is adjusted, carries out continuing simulated precipitation, tests the soil body 14 at this time due to drainage by suction speed
, which there is the reason of difference, in rate and seepage flow speed to form negative pressuren zone cavity inside the test soil body 14, observe and measure lower outlet 3
Transparent 6 fluctuation in stage of thin conduit of different location in drainage rates and measurement certain time, to judge to test the soil body 14 in lasting drop
The natural environment of rain descends the negative pressuren zone empty cavity position pump-out and cavity size change in shape situation of different location；
(5) adjustable water injector 9 is adjusted, the spaced simulation precipitation in a period of time is carried out, observes and measures lower outlet 3
Transparent 6 fluctuation in stage of thin conduit of different location in drainage rates and measurement certain time is dropped to judge to test the soil body at interval
The natural environment of rain descends the negative pressuren zone empty cavity position pump-out and cavity size change in shape situation and development of different location；
(6) be put into the different type test soil body 14, measure different soil properties, different infiltration coefficient the test soil body 14 in difference
The variation of negative pressure self-starting drainpipe drainage rates and negative pressuren zone cavity situation of change under rainfall environment.
Claims (6)
1. a kind of self-starting drainage by suction experimental rig, which is characterized in that including model casing, upper water-out mouth, lower outlet, anti-mud
Sieve plate, outlet pipe, transparent thin conduit, spray head, top cover, adjustable water injector, the lower water outlet of the bottom setting of the model casing
Mouthful, upper water-out mouth is arranged in the top of model casing, two pieces of anti-mud sieve plates are set between upper water-out mouth and lower outlet, anti-mud sieve plate with
The sealing of model chamber interior wall, the test soil body are placed between two pieces of anti-mud sieve plates, and top cover is arranged at the top of model casing, connects spray on top cover
Head, spray head are connect with adjustable water injector, and several apopores are arranged at model casing difference elevation, and apopore connection in side is several
Transparent thin conduit, other side apopore connect several outlet pipes, permeable hole are arranged on the anti-mud sieve plate, wraps on anti-mud sieve plate
Wrap up in filtering material.
2. self-starting drainage by suction experimental rig according to claim 1, which is characterized in that model casing is using transparent sub- gram
Dead-wood material places rubber protection pad under model casing.
3. self-starting drainage by suction experimental rig according to claim 1, which is characterized in that the transparent thin conduit is
Equidistant observed stage shows water pipe.
4. self-starting drainage by suction experimental rig according to claim 1, which is characterized in that the outlet pipe is scalable
And adjustment length, it is extend into the cavity of the test soil body as needed.
5. self-starting drainage by suction experimental rig according to claim 1, which is characterized in that the filtering material can make
Use geotextiles.
6. self-starting drainage by suction experimental rig according to claim 1, which is characterized in that the lower outlet with lead
Water pipe connection, the water outlet of aqueduct are put into graduated cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910234771.XA CN109932300B (en) | 2019-03-26 | 2019-03-26 | Self-starting negative pressure drainage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910234771.XA CN109932300B (en) | 2019-03-26 | 2019-03-26 | Self-starting negative pressure drainage test device |
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| CN109932300A true CN109932300A (en) | 2019-06-25 |
| CN109932300B CN109932300B (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06322772A (en) * | 1993-05-13 | 1994-11-22 | Nitsusaku:Kk | Drainage method in landslide area or the like |
| US20140216583A1 (en) * | 2013-02-04 | 2014-08-07 | Xiamen R&T Plumbing Technology Co., Ltd. | Water drain accelerating device |
| CN105178343A (en) * | 2015-08-12 | 2015-12-23 | 三峡大学 | Device for conducting siphon drainage by means of drainage ditch |
| CN205643343U (en) * | 2016-05-31 | 2016-10-12 | 成都理工大学 | Indoor test model case in multi -functional landslide |
| CN107246019A (en) * | 2017-06-30 | 2017-10-13 | 浙江大学 | A kind of slope underground water drilling self-starting drainage by suction system and method |
| CN208255017U (en) * | 2018-03-23 | 2018-12-18 | 深圳宏业基岩土科技股份有限公司 | Soil body hydraulic gradient model experimental rig |
| CN209802933U (en) * | 2019-03-26 | 2019-12-17 | 浙江大学 | Self-starting negative pressure drainage test device |
-
2019
- 2019-03-26 CN CN201910234771.XA patent/CN109932300B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06322772A (en) * | 1993-05-13 | 1994-11-22 | Nitsusaku:Kk | Drainage method in landslide area or the like |
| US20140216583A1 (en) * | 2013-02-04 | 2014-08-07 | Xiamen R&T Plumbing Technology Co., Ltd. | Water drain accelerating device |
| CN105178343A (en) * | 2015-08-12 | 2015-12-23 | 三峡大学 | Device for conducting siphon drainage by means of drainage ditch |
| CN205643343U (en) * | 2016-05-31 | 2016-10-12 | 成都理工大学 | Indoor test model case in multi -functional landslide |
| CN107246019A (en) * | 2017-06-30 | 2017-10-13 | 浙江大学 | A kind of slope underground water drilling self-starting drainage by suction system and method |
| WO2019000776A1 (en) * | 2017-06-30 | 2019-01-03 | 浙江大学 | Side slope underground water drilling self-starting negative pressure drainage system and method |
| CN208255017U (en) * | 2018-03-23 | 2018-12-18 | 深圳宏业基岩土科技股份有限公司 | Soil body hydraulic gradient model experimental rig |
| CN209802933U (en) * | 2019-03-26 | 2019-12-17 | 浙江大学 | Self-starting negative pressure drainage test device |
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| CN109932300B (en) | 2023-11-28 |
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