CN107478562A - It is a kind of to study the experimental rig that piping develops under complicated flow condition - Google Patents
It is a kind of to study the experimental rig that piping develops under complicated flow condition Download PDFInfo
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- CN107478562A CN107478562A CN201710777891.5A CN201710777891A CN107478562A CN 107478562 A CN107478562 A CN 107478562A CN 201710777891 A CN201710777891 A CN 201710777891A CN 107478562 A CN107478562 A CN 107478562A
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- piping
- flow condition
- permeable tank
- tank
- experimental rig
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 25
- 238000001764 infiltration Methods 0.000 claims abstract description 5
- 230000008595 infiltration Effects 0.000 claims abstract description 5
- 239000004576 sand Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 6
- 239000002689 soil Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 229920005479 Lucite® Polymers 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
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
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The experimental rig that piping develops under complicated flow condition is studied the invention discloses a kind of.Described device includes：Upstream analogue means and the transparent variable cross-section permeable tank connected with upstream analogue means；Multiple water pressure sensors are arranged at intervals with described infiltration groove sidewall, described water pressure sensor is connected by wire with data receiving processor；Described permeable tank is provided with delivery port in remote water inlet one end upper surface.The present invention is simple in construction, and operation is easy；Scientific structure design is reasonable, can soil body piping develops under study of many complicated flow condition well rule by being spliced and combined to multiple different cross section groove bodies.
Description
Technical field
The present invention relates to Geotechnical Engineering experimental test field, specifically a kind of experimental rig for studying seepage deformation.
Background technology
Seepage failure problem is the major issue that levee foundation and other hydraulic structures face, and is to cause embankment safety accident
One of with the principal mode that breaks down, piping is the principal mode of seepage failure, therefore the research tool to levee foundation piping development problem
It is of great importance.Due to historical river degradation, deposit and the geologic origin such as change its course, and sedimentary condition is ever-changing,
The levee foundation structure formed has very big difference, and the complicated and changeable of levee foundation structure make it that formed flow condition is also complicated
, the current inside levee foundation be frequently not it is uniform everywhere, the current formed by complex random systems structure can be divided into diverging, convergence,
The various states such as uniform.
The content of the invention
For above-mentioned technical problem, the present invention provides a kind of experimental rig for studying piping development under complicated flow condition.
To reach above-mentioned purpose, the present invention studies the experimental rig that piping develops under complicated flow condition, described device
Including：Upstream analogue means and the transparent variable cross-section permeable tank connected with upstream analogue means；In described infiltration groove sidewall
Multiple water pressure sensors are arranged at intervals with, described water pressure sensor is connected by wire with data receiving processor；Institute
The permeable tank stated is provided with delivery port in remote water inlet one end upper surface.
Preferably, described upstream analogue means includes：Lowering or hoisting gear and the upstream water tank being arranged on lowering or hoisting gear, its
In, upstream water tank rises to simulate the lifting of upper pond level under lowering or hoisting gear effect；Described upstream water tank by pipeline with
The water inlet connection of permeable tank.
Preferably, described permeable tank is：Converge permeable tank, diverging permeable tank or by convergence permeable tank and diverging permeable tank
It is spliced.Preferably, described lowering or hoisting gear includes steel wire rope and lifting pulley group forms.
Preferably, described permeable tank includes：Inhalant region and sample area；It is provided between inhalant region and sample area every sand
Net.
Preferably, the inhalant region top is additionally provided with steam vent.
The present invention is a kind of to study the experimental rig that piping develops under complicated flow condition, and apparatus structure is simple, and operation is easy,
Scientific structure design is reasonable, by being spliced and combined to multiple different cross section groove bodies, obtains the flow condition of Various Complex, so as to
The soil body piping rule of development under complicated flow condition is studied, reference and design considerations are provided for dyke design and reinforcing.
Brief description of the drawings
Fig. 1 is the structural representation of experimental rig of the present invention；
Fig. 2 is the permeable tank composition figure of the embodiment of the present invention one；
Fig. 3 is the permeable tank plan of embodiment one；
Fig. 4 is the permeable tank composition figure of the embodiment of the present invention two；
Fig. 5 is the permeable tank plan of embodiment two；
Fig. 6 is the permeable tank composition figure of the embodiment of the present invention three；
Fig. 7 is the permeable tank plan of embodiment three；
Fig. 8 is the permeable tank composition figure of the embodiment of the present invention four；
Fig. 9 is the permeable tank plan of example IV.
Reference title is as follows：
1st, steel wire rope；2nd, pulley；3rd, overflow pipe；4th, upstream water tank；5th, pipeline；6th, valve；7th, permeable tank；8th, steam vent；
9th, every sand net；10th, inhalant region；11st, sample area；12nd, cover plate；13rd, water pressure sensor；14th, wire；15th, data receiver is handled
Device；16th, delivery port；17th, glass plate.
Embodiment
With reference to Figure of description, the present invention will be further described.
The present invention studies the experimental rig that piping develops under complicated flow condition, including：Upstream analogue means and and upstream
The transparent variable cross-section permeable tank 7 of analogue means connection；Multiple water pressure sensings are arranged at intervals with described infiltration groove sidewall
Device 13, described water pressure sensor are connected by wire 14 with data receiving processor 15；Described permeable tank 7 is far being intake
Mouth one end upper surface is provided with delivery port 16.Wherein, upstream analogue means includes：Lowering or hoisting gear and be arranged on it is upper on lowering or hoisting gear
Swimming case 4, wherein, upstream water tank 4 rises to simulate the lifting of upper pond level under lowering or hoisting gear effect；Described upstream water tank
4 are connected by pipeline 5 with the water inlet of permeable tank 7.
Wherein, above-mentioned lowering or hoisting gear can use manual hoisting device, can also use electronic lowering or hoisting gear.Tie below
Close embodiment further instruction.
Embodiment one
Reference picture 1 is a kind of to study the experimental rig that piping develops under complicated flow condition, including steel wire rope 1, pulley 2, on
Swim case 4, pipeline 5, permeable tank 7, every sand net 9, inhalant region 10, sample area 11, cover plate 12, water pressure sensor 13, wire 14,
Data receiving processor 15, delivery port 16.
Upstream water tank 4 steps up upper pond level by steel wire rope 1 and pulley 2, and permeable tank 7 passes through pipeline 5 and upstream
Water tank 4 connects, and pipeline 5 is placed in the bottom of inhalant region 10, is provided with valve 6 on pipeline 5, is controlled by control valve 6 during experiment
The water level of upstream water tank 4 reaches stable, and overflow pipe 3 discharges water unnecessary in the water tank of upstream, inhalant region 10 and examination in permeable tank 7
By being separated every sand net 9, steam vent 8 is arranged on the top of inhalant region 10 in sample area 11, and cover plate 12 is provided with delivery port 16, delivery port 16
It is connected with plastic tube, for exporting water burst and gushing sand for measurement and record.
The section of permeable tank 7 is variable cross-section, is spliced by the groove body of multiple different cross sections, as shown in Figures 2 and 3, infiltration
Groove 7 is spliced by inhalant region 10, sample area 11, cover plate 12 and glass plate 17, close by fluid sealant and bolt between each part
Envelope connection, sample is located in sample area 11, and in the present embodiment, sample area 11 is spliced by two groove bodies, preceding end slot body section
From large to small, rear end slot body section is changed from small to big, as shown in figure 3, becoming uniform by convergence along journey streamflow regime, then becomes diverging.Together
Sample, cover plate 12 is spliced by two cover plates 12, and each cover plate 12 matches with groove body, and cover board of front end 12 narrows from the width,
Rear-end plate 12 is broadened by narrow, and delivery port 16 only retains on latter piece of cover plate 12, the envelope of delivery port 16 on previous piece of cover plate 12
Close.The section of inhalant region 10 and the section of permeable tank rear end glass plate 17 match with the heavy in section side size of sample area 11.Permeable tank 7
It is made of lucite, can be clearly seen that the motion conditions of the side wall sample of permeable tank 7.It is provided with sample area 11 multiple
Water pressure sensor 13, water pressure sensor 13 are connected by wire 14 with data receiving processor 15, and the water pressure passes
Sensor 13 is distributed on the side wall of sample area 11 and middle part along the length direction of permeable tank 7.Water pressure sensor 13 can be measured accurately
Water pressure, while the pressure changing under different constant heads in sample can be recorded in real time at.
Embodiment two
As shown in Figure 4 and Figure 5, in conjunction with the embodiments one, in the present embodiment, sample area 11 equally by two groove bodies splicings and
Into preceding end slot body section is changed from small to big, and rear end slot body section becomes uniform by diverging from large to small, along journey streamflow regime, then becomes remittance
It is poly-.Cover plate 12 is also spliced by two cover plates 12, and each cover plate 12 matches with groove body, and cover board of front end 12 is broadened by narrow,
Rear-end plate 12 narrows from the width, and delivery port 16 only retains on latter piece of cover plate 12, the envelope of delivery port 16 on previous piece of cover plate 12
Close.The section of inhalant region 10 and the section of permeable tank rear end glass plate 17 match with the small bore side size of sample area 11.
Embodiment three
As shown in Figure 6 and Figure 7, in conjunction with the embodiments one, in the present embodiment, sample area 11 is made up of a groove body, and groove body is cut
Face is convergence along journey streamflow regime from large to small.Cover plate 12 matches with groove body, and cover plate 12 narrows from the width, on cover plate 12
Delivery port 16 retains.The section of inhalant region 10 matches with sample area heavy in section side size, the section of permeable tank rear end glass plate 17 with
The small bore side size matching of sample area 11.
Example IV
As shown in Figure 8 and Figure 9, in conjunction with the embodiments one, in the present embodiment, sample area 11 is made up of a groove body, and groove body is cut
Face is changed from small to big, and is diverging along journey streamflow regime.Cover plate 12 matches with groove body, and cover plate 12 is broadened by narrow, on cover plate 12
Delivery port 16 retains.The section of inhalant region 10 matches with sample area small bore side size, the section of permeable tank rear end glass plate 17 with
The heavy in section side size matching of sample area 11.
A kind of operation principle for studying the experimental rig that piping develops under complicated flow condition of the present invention：By to it is multiple not
With splicing and combining for section slot body, obtain first to converge and dissipate afterwards, first dissipate the current Various Complex such as converge, converge, dissipating afterwards
Condition.During experiment, upstream water tank 4 is lifted to control upper pond level by steel wire rope 1 and pulley 2, lifting upper pond level step by step makes
Seepage deformation occurs for sample, observes and records the erosion of the water pressure situation of change and sample under different upper pond levels inside sample
Situation, measure the water yield at different water level lower outlets and gush sand amount, piping is finally given by the comparative analysis to data
Seepage field changing rule and the piping rule of development in evolution inside sample.By testing piping under different flow conditions
As a result contrast and analysis, the influence that flow condition develops to piping may finally be obtained, ginseng is provided for dyke design and reinforcing
Examine and design considerations.
More than, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto is any to be familiar with sheet
Those skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in should all be covered
Within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by the protection domain that claim is defined.
Claims (6)
1. a kind of study the experimental rig that piping develops under complicated flow condition, it is characterised in that described device includes：Upstream
Analogue means and the transparent variable cross-section permeable tank connected with upstream analogue means；It is arranged at intervals with described infiltration groove sidewall
Multiple water pressure sensors, described water pressure sensor are connected by wire with data receiving processor；Described permeable tank
Delivery port is provided with remote water inlet one end upper surface.
2. the experimental rig that piping develops under complicated flow condition is studied as claimed in claim 1, it is characterised in that：Described
Upstream analogue means includes：Lowering or hoisting gear and the upstream water tank being arranged on lowering or hoisting gear, wherein, upstream water tank is in lowering or hoisting gear
Effect is lower to be risen to simulate the lifting of upper pond level；Described upstream water tank is connected by pipeline and the water inlet of permeable tank.
3. the experimental rig that piping develops under complicated flow condition is studied as claimed in claim 1, it is characterised in that：Described
Permeable tank is：Convergence permeable tank, diverging permeable tank are spliced by convergence permeable tank and diverging permeable tank.
4. the experimental rig that piping develops under complicated flow condition is studied as claimed in claim 2, it is characterised in that：Described
Lowering or hoisting gear includes steel wire rope and lifting pulley group forms.
5. the experimental rig that piping develops under complicated flow condition is studied as claimed in claim 1, it is characterised in that：Described
Permeable tank includes：Inhalant region and sample area；It is provided between inhalant region and sample area every sand net.
6. the experimental rig that piping develops under complicated flow condition is studied as claimed in claim 1, it is characterised in that：Described
Permeable tank top is provided with steam vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710777891.5A CN107478562A (en) | 2017-08-31 | 2017-08-31 | It is a kind of to study the experimental rig that piping develops under complicated flow condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710777891.5A CN107478562A (en) | 2017-08-31 | 2017-08-31 | It is a kind of to study the experimental rig that piping develops under complicated flow condition |
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| Publication Number | Publication Date |
|---|---|
| CN107478562A true CN107478562A (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710777891.5A Pending CN107478562A (en) | 2017-08-31 | 2017-08-31 | It is a kind of to study the experimental rig that piping develops under complicated flow condition |
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| CN (1) | CN107478562A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562526A (en) * | 2018-03-21 | 2018-09-21 | 中冶华天工程技术有限公司 | The experimental rig and test method of study two-dimensional and three dimensional fluid flow-soil particle Erosion Law |
| CN112255158A (en) * | 2020-09-30 | 2021-01-22 | 中国水利水电科学研究院 | Embankment foundation piping damage mode experimental device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147420A (en) * | 2013-02-18 | 2013-06-12 | 河海大学 | Test device and method for researching sea wall engineering piping phenomenon |
| CN103233441A (en) * | 2013-04-19 | 2013-08-07 | 河海大学 | Multiple embankment foundation pipeline type piping seepage deformation model and test method |
| CN203705311U (en) * | 2014-01-16 | 2014-07-09 | 河海大学 | Experimental device for researching bidirectional piping under action of varying head |
| JP2016217043A (en) * | 2015-05-22 | 2016-12-22 | 国立研究開発法人土木研究所 | Method and device for assessing piping phenomenon |
| CN207557060U (en) * | 2017-08-31 | 2018-06-29 | 中冶华天工程技术有限公司 | It is a kind of to study the experimental rig that piping develops under complicated flow condition |
-
2017
- 2017-08-31 CN CN201710777891.5A patent/CN107478562A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| CN103147420A (en) * | 2013-02-18 | 2013-06-12 | 河海大学 | Test device and method for researching sea wall engineering piping phenomenon |
| CN103233441A (en) * | 2013-04-19 | 2013-08-07 | 河海大学 | Multiple embankment foundation pipeline type piping seepage deformation model and test method |
| CN203705311U (en) * | 2014-01-16 | 2014-07-09 | 河海大学 | Experimental device for researching bidirectional piping under action of varying head |
| JP2016217043A (en) * | 2015-05-22 | 2016-12-22 | 国立研究開発法人土木研究所 | Method and device for assessing piping phenomenon |
| CN207557060U (en) * | 2017-08-31 | 2018-06-29 | 中冶华天工程技术有限公司 | It is a kind of to study the experimental rig that piping develops under complicated flow condition |
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| Title |
|---|
| 梁媛: "非均匀流条件下的管涌试验研究", 《人民黄河》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562526A (en) * | 2018-03-21 | 2018-09-21 | 中冶华天工程技术有限公司 | The experimental rig and test method of study two-dimensional and three dimensional fluid flow-soil particle Erosion Law |
| CN112255158A (en) * | 2020-09-30 | 2021-01-22 | 中国水利水电科学研究院 | Embankment foundation piping damage mode experimental device and method |
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Application publication date: 20171215 |
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