CN206346147U - Sand base Piping Occurring in Embankment experimental simulation and detection means - Google Patents
Sand base Piping Occurring in Embankment experimental simulation and detection means Download PDFInfo
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- CN206346147U CN206346147U CN201720003042.XU CN201720003042U CN206346147U CN 206346147 U CN206346147 U CN 206346147U CN 201720003042 U CN201720003042 U CN 201720003042U CN 206346147 U CN206346147 U CN 206346147U
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- sand
- back segment
- embankment
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- experimental simulation
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Abstract
The utility model discloses a kind of sand base Piping Occurring in Embankment experimental simulation and detection means, including glass molds type groove, water storage box, simulation dam, many conduits, aqueduct, valve, A-frame and detection components；Glass molds type groove includes leading portion rhone and back segment sand launder, the bottom of leading portion rhone is provided with discharge of wastewater hole, filled out in back segment sand launder and put sand sample, the water entering surface of back segment sand launder and go out on the water surface to open up two discharge pipe holes, many conduits are inserted in back segment sand launder by two discharge pipe holes respectively, simulation dam is arranged on the clay in back segment sand launder, water storage box is arranged on A-frame, one end of aqueduct is connected by the apopore of valve and water storage box, and the other end of aqueduct is connected to the inlet end of wherein one conduit；Detection components are inserted in the sand sample of back segment sand launder.The utility model can be good at detecting the presence of piping, when piping is also not fully developed, and find in time, in time processing, lower the massive losses that piping is brought significantly.
Description
Technical field
The utility model is related to a kind of water conservancy safety protection equipment, more particularly to a kind of sand base Piping Occurring in Embankment experimental simulation and
Detection means.
Background technology
At present, going back neither one has the equipment of good detection to piping, and existing technology has the inspection of DB-3 dike pipings seepage
Instrument is surveyed, although this equipment have good effect based on " flow field method ", " pseudorandom multi-frequency signal " to the detection of piping
Really, but it measures that scale is excessively huge, measurement point builds relative difficulty in actual piping detection process, and operation is relatively numb
Tired, cost is of a relatively high, therefore existing situation is not come into operation on a large scale.
The investigation of piping is up to the present still more investigated using manual patrol by the way of, this mode inefficiency, it is necessary to
Very big manpower and materials are expended, more seriously may be due to investigation not in time, piping inside dam when resulting in a finding that piping mouthful
The flow path size of passage is in the hole, and now safety of dam has had problem.
Utility model content
The purpose of this utility model：A kind of sand base Piping Occurring in Embankment experimental simulation and detection means are provided, so that " resistivity becomes
The coherent detection of piping situation is carried out based on change ", when piping is also not fully developed, is detected by equipment, outlet pipe is detected
The presence gushed, plays the effect that prevention piping occurs, and reduction piping causes the serious consequence of dam dam break.
To achieve these goals, the technical solution of the utility model is：
A kind of sand base Piping Occurring in Embankment experimental simulation and detection means, including glass molds type groove, water storage box, simulation dam, many
Root conduit, aqueduct, valve, A-frame and detection components；Described glass molds type groove is divided into two parts by dividing plate：Before
Section rhone and back segment sand launder, the bottom of described leading portion rhone is provided with discharge of wastewater hole, the width of described leading portion rhone
Spend for 5mm, the aperture in described discharge of wastewater hole is 5cm；The width of described back segment sand launder is 55cm, described back segment sand launder
Inside fill out and put sand sample, described sand sample is the fine sand for being laid on lower floor and the clay for being laid on upper strata, described back segment sand launder enters
The water surface and go out on the water surface to open up two discharge pipe holes, many described conduits are inserted in described by two described discharge pipe holes respectively
Back segment sand launder in, described many conduit levels laying, a diameter of 2cm of described many conduits, many described conduits
Perisporium be provided with perforate, and described many conduits and be enclosed with permeable gauze and sand control screens；Described simulation dam is arranged on
On clay in described back segment sand launder, positioned at the upstream face of described back segment sand launder；Described water storage box is arranged on described
On A-frame, positioned at the side of described glass molds type groove, one end of described aqueduct by described valve with it is described
Water storage box apopore connection, at the high 2cm in outside of described water storage box, the other end of described aqueduct is connected to
The inlet end of conduit wherein described in one；Described detection components are inserted in the sand sample of described back segment sand launder.
Above-mentioned sand base Piping Occurring in Embankment experimental simulation and detection means, wherein, described detection components include four electrodes,
Power supply and survey voltage device, four described electrodes are equidistantly inserted in " one " font in described sand sample, described power supply
Two ends be connected respectively with the electrode described in first and the 4th, the two ends of described survey voltage device respectively with second and third
Electrode connection described in root.
Above-mentioned sand base Piping Occurring in Embankment experimental simulation and detection means, wherein, described glass molds type groove is transparent sub- gram
Power plate makes, overall long 80cm, wide 60cm, high 50cm.
Above-mentioned sand base Piping Occurring in Embankment experimental simulation and detection means, wherein, the laying of described fine sand is highly 30cm,
Average grain diameter is about 0.25mm≤d≤0.35mm, and modulus of fineness μ f are between 2.2-1.6mm.
Above-mentioned sand base Piping Occurring in Embankment experimental simulation and detection means, wherein, the laying of described clay is highly 10cm.
Above-mentioned sand base Piping Occurring in Embankment experimental simulation and detection means, wherein, the height in two described discharge pipe holes is distinguished
At 5cm and 15cm, the width in described two described discharge pipe holes is located at 20cm, 40cm and 60cm of length direction respectively
Place.
Above-mentioned sand base Piping Occurring in Embankment experimental simulation and detection means, wherein, the length of described simulation dam is 80cm,
Width is 20cm, is highly 40cm.
Above-mentioned sand base Piping Occurring in Embankment experimental simulation and detection means, wherein, the length of described water storage box is 50cm, wide
Spend for 30cm, be highly 30cm, the height of described A-frame is 150cm.
Above-mentioned sand base Piping Occurring in Embankment experimental simulation and detection means, wherein, many described conduits are made up of PVC materials
Fire retardant insulating electrical casing pipe.
The utility model can be good at detecting the presence of piping, when piping is also not fully developed, and find in time, and
When handle, lower the massive losses that bring of piping significantly.
Brief description of the drawings
Fig. 1 is the utility model sand base Piping Occurring in Embankment experimental simulation and the front view of detection means.
Fig. 2 is the structural representation of the glass molds type groove of the utility model sand base Piping Occurring in Embankment experimental simulation and detection means
Figure.
Fig. 3 is the detection components connection figure of the utility model sand base Piping Occurring in Embankment experimental simulation and detection means.
Fig. 4 is Fig. 3 equivalent schematic diagram.
Embodiment
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
Refer to shown in accompanying drawing 1 to accompanying drawing 4, a kind of sand base Piping Occurring in Embankment experimental simulation and detection means, including glass molds
Type groove 1, water storage box 2, simulation dam 3, many conduits 4, aqueduct 5, valve 6, A-frame 7 and detection components；Described glass
Glass model groove 1 is divided into two parts by dividing plate：Leading portion rhone 11 and back segment sand launder 12, the bottom of described leading portion rhone 11
Portion is provided with discharge of wastewater hole 13, and the width of described leading portion rhone 11 is 5mm, and the aperture in described discharge of wastewater hole 13 is
5cm；The width of described back segment sand launder 12 is to fill out to put sand sample in 55cm, described back segment sand launder 12, and described sand sample is laying
Lower floor fine sand and be laid on the clay on upper strata, the water entering surface of described back segment sand launder 12 and go out on the water surface to open up two discharge pipes
Hole 14, many described conduits 4 are inserted in described back segment sand launder 12 by two described discharge pipe holes 14 respectively, described
Many levels of conduit 4 laying, a diameter of 2cm of described many conduits 4, the perisporium of many described conduits 4 is provided with perforate, and
Permeable gauze and sand control screens are enclosed with many described conduits 4；Described simulation dam 3 is arranged on described back segment sand launder 12
On interior clay, positioned at the upstream face of described back segment sand launder 12；Described water storage box 2 is arranged on described A-frame 7,
Positioned at the side of described glass molds type groove 1, one end of described aqueduct 5 passes through described valve 6 and described water storage box 2
Apopore connection, at the high 2cm in outside of described water storage box 2, the other end of described aqueduct 5 is connected to wherein one
The inlet end of conduit 4 described in root；Described detection components are inserted in the sand sample of described back segment sand launder 12.
Described detection components include four electrodes 8, power supply 9 and survey voltage device 10, and four described electrodes 8 are in " one "
Font is equidistantly inserted in described sand sample, and the two ends of described power supply 9 connect with the electrode 8 described in first and the 4th respectively
Connect, the two ends of described survey voltage device 10 are connected with the electrode 8 described in second and third root respectively.
Described glass molds type groove 1 is made using transparent ACRYLIC acrylic boards, overall long 80cm, wide 60cm, high
50cm。
The laying of described fine sand is highly 30cm, and average grain diameter is about 0.25mm≤d≤0.35mm, and modulus of fineness μ f exist
2.2-1.6mm between.
The laying of described clay is highly 10cm, simulation levee body and topsoil.
The height in two described discharge pipe holes 14 is located at 5cm and 15cm respectively, described two described discharge pipe holes 14
Width respectively positioned at length direction 20cm, 40cm and 60cm at.
The length of described simulation dam 3 is 80cm, and width is 20cm, is highly 40cm.
The length of described water storage box 2 is 50cm, and width is 30cm, is highly 30cm, the height of described A-frame 7
For 150cm.
Many described conduits 4 are the fire retardant insulating electrical casing pipe that PVC materials are made.
Leading portion rhone 11 holds the draining after experiment, and discharge of wastewater hole 13 is used to test the discharge for terminating rear waste stream.It is real
When testing, conduit 4 is inserted in two discharge pipe holes 14 to simulate the piping passage occurred in diverse location, to avoid soil during experiment
Enter pipeline by two discharge pipe holes 14, the permeable gauze in the outer wrapping of conduit 4 puts conduit 4 during sand is laid
At corresponding pipeline hole 14.Sand, the laying of piping passage are finished, and on the sample of the upstream face of back segment sand launder 12, are placed
One simulation dam 3.Water storage box 2 is placed on A-frame 7, and the apopore of water storage box 2 is by installing valve 6 and aqueduct 5
It is connected, the feeder connection of the other end of aqueduct 5 connection simulation piping.
Water storage box 2 is connected under the support of A-frame 7 by the aqueduct 5 with valve 6 with dam piping analogue means,
During detection, electrode 8 is inserted, is connected by respective wire with driving source with detector response, driving source is encapsulated with detector response
Response is shown together and by display device.
Electrode A, B, C, D are arranged on one wire, and electrode 8 is made for metal material, with very strong electric conductivity,
Power supply 9 is 5V dc sources, and the measurement accuracy for surveying voltage device 10 is 0.001V, and two electrodes 8 of A, D are connected with power supply 9, B, C
Two electrodes 8 are connected with surveying voltage device 10.In use, being measurement object along the straight line of base of dam, by the equidistant even depth of electrode 8
Insertion soil in, A, D electrode 8 provides excitation by power supply 9, and the detection response of voltage device 10 is surveyed in the connection of B, C electrode 8, is examined successively
The resistivity for each point surveyed on this line, a response data resistivity only poor proportionality constant K, therefore also can directly with respond come
Reflect the situation of resistivity, by the contrast of each response data, find out the data of notable difference, corresponding point also can be first
Step is judged as the point for having piping to occur, then is investigated on by this point direction vertical with base of dam, and then reduces generation.
Wherein
In no generation piping, the simulation downstream basal plane soil property situation of dam 3 is roughly the same, and each resistivity situation is big
Identical, R1=R2=R3 is caused, what each point was detectedCan be roughly the same, but when piping occurs between two electrodes 8 of B, C, B,
Resistivity is reduced between two electrodes 8 of C, and equivalent resistance R2 diminishes, can obtained by calculation formula, is encouraged between two electrodes 8 of A, D
Constant, R2 reduction causes circuital current to increase, R1, and R3 partial pressures increase, total voltage is constant, therefore voltage is reduced at R2, now R2
PlaceDiminish, the response between two electrodes 8 of B, C is compared with the response between other points, hence it is evident that diminishes, and then deduces
There is piping to occur or exist potential safety hazard between two electrodes 8 of B, C.
Glass molds type groove 1 is simulated by the conduit 4 of perisporium perforate, to prevent sand from blocking eyelet, in the wall of conduit 4
On be wrapped with gauze, and provided with plurality of passages with standby.
Operation principle of the present utility model is as follows：Hydraulic pressure and water, the control pipe of valve 6 are provided by the water storage box 2 raised
Flow when gushing, is linked into piping analog channel by aqueduct 5, water the opening by the perisporium of conduit 4 that there is certain hydraulic pressure
Hole is permeated to sand around, and sand equivalent resistance is after water leaking-in, and equivalent resistance reduces, i.e. R2 reduces to be carried out by detection device
When, it is possible to find significant change occurs for resistivity at B, C, therefore judges there is the presence of piping passage between B, C.
In summary, the utility model can be good at detecting the presence of piping, when piping is also not fully developed, and
The massive losses that piping is brought are lowered in Shi Faxian, in time processing significantly.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
The equivalent structure transformation that every utilization the utility model description is made, or it is directly or indirectly related with other are attached to
The technical field of product, is similarly included in scope of patent protection of the present utility model.
Claims (9)
1. a kind of sand base Piping Occurring in Embankment experimental simulation and detection means, it is characterised in that：Including glass molds type groove, water storage box, mould
Intend dam, many conduits, aqueduct, valve, A-frame and detection components；Described glass molds type groove is divided into by dividing plate
Two parts：Leading portion rhone and back segment sand launder, the bottom of described leading portion rhone are provided with discharge of wastewater hole, described leading portion row
The width of tank is 5mm, and the aperture in described discharge of wastewater hole is 5cm；The width of described back segment sand launder is 55cm, described
Filled out in back segment sand launder and put sand sample, described sand sample is the fine sand for being laid on lower floor and the clay for being laid on upper strata, described back segment
The water entering surface of sand launder and go out on the water surface to open up two discharge pipe holes, many described conduits are inserted by two described discharge pipe holes respectively
Enter in described back segment sand launder, described many conduit levels laying, a diameter of 2cm of described many conduits is described
The perisporium of many conduits is provided with perforate, and described many conduits and is enclosed with permeable gauze and sand control screens；Described simulation is big
Dam is arranged on the clay in described back segment sand launder, positioned at the upstream face of described back segment sand launder；Described water storage box is set
On described A-frame, positioned at the side of described glass molds type groove, one end of described aqueduct passes through described valve
Door is connected with the apopore of described water storage box, at the high 2cm in outside of described water storage box, described aqueduct it is another
End is connected to the inlet end of the conduit wherein described in one；Described detection components are inserted in the sand sample of described back segment sand launder
In.
2. sand base Piping Occurring in Embankment experimental simulation according to claim 1 and detection means, it is characterised in that：Described detection
Component includes four electrodes, power supply and surveys voltage device, and four described electrodes are in described in " one " font is equidistantly inserted in
In sand sample, the two ends of described power supply are connected with the electrode described in first and the 4th respectively, and described survey voltage device two
End is connected with the electrode described in second and third root respectively.
3. sand base Piping Occurring in Embankment experimental simulation according to claim 1 and detection means, it is characterised in that：Described glass
Model groove makes for transparent acrylic, overall long 80cm, wide 60cm, high 50cm.
4. sand base Piping Occurring in Embankment experimental simulation according to claim 1 and detection means, it is characterised in that：Described fine sand
Laying highly be 30cm, average grain diameter is about 0.25mm≤d≤0.35mm, and modulus of fineness μ f are between 2.2-1.6mm.
5. sand base Piping Occurring in Embankment experimental simulation according to claim 1 and detection means, it is characterised in that：Described clay
Laying highly be 10cm.
6. sand base Piping Occurring in Embankment experimental simulation according to claim 1 and detection means, it is characterised in that：Two described rows
The height of pipe hole is located at 5cm and 15cm respectively, and the width in described two described discharge pipe holes is located at length direction respectively
20cm, 40cm and 60cm at.
7. sand base Piping Occurring in Embankment experimental simulation according to claim 1 and detection means, it is characterised in that：Described simulation
The length of dam is 80cm, and width is 20cm, is highly 40cm.
8. sand base Piping Occurring in Embankment experimental simulation according to claim 1 and detection means, it is characterised in that：Described retaining
The length of case is 50cm, and width is 30cm, is highly 30cm, and the height of described A-frame is 150cm.
9. sand base Piping Occurring in Embankment experimental simulation according to claim 1 and detection means, it is characterised in that：Described many
Conduit is the fire retardant insulating electrical casing pipe that PVC materials are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720003042.XU CN206346147U (en) | 2017-01-03 | 2017-01-03 | Sand base Piping Occurring in Embankment experimental simulation and detection means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720003042.XU CN206346147U (en) | 2017-01-03 | 2017-01-03 | Sand base Piping Occurring in Embankment experimental simulation and detection means |
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| Publication Number | Publication Date |
|---|---|
| CN206346147U true CN206346147U (en) | 2017-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720003042.XU Expired - Fee Related CN206346147U (en) | 2017-01-03 | 2017-01-03 | Sand base Piping Occurring in Embankment experimental simulation and detection means |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164242A (en) * | 2018-07-17 | 2019-01-08 | 江苏省防汛防旱指挥部办公室 | A kind of landslide simulation test device for emergency flood fighting rehearsal |
| CN109163877A (en) * | 2018-07-12 | 2019-01-08 | 水利部交通运输部国家能源局南京水利科学研究院 | The large scale field test simulator of sub-bottom changes piping dangerous situation |
| 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 |
| CN112697673A (en) * | 2020-12-14 | 2021-04-23 | 中国水利水电科学研究院 | Visual test device and method for contact seepage damage of through-embankment pressureless culvert pipe |
| CN112986536A (en) * | 2021-02-22 | 2021-06-18 | 中国水利水电科学研究院 | Device and method for simulating contact scouring damage of crossing-dike culvert pipe |
-
2017
- 2017-01-03 CN CN201720003042.XU patent/CN206346147U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163877A (en) * | 2018-07-12 | 2019-01-08 | 水利部交通运输部国家能源局南京水利科学研究院 | The large scale field test simulator of sub-bottom changes piping dangerous situation |
| CN109164242A (en) * | 2018-07-17 | 2019-01-08 | 江苏省防汛防旱指挥部办公室 | A kind of landslide simulation test device for emergency flood fighting rehearsal |
| CN109164242B (en) * | 2018-07-17 | 2021-03-02 | 江苏省防汛防旱指挥部办公室 | Landslide simulation test device for flood prevention and emergency drilling |
| 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 |
| CN112697673A (en) * | 2020-12-14 | 2021-04-23 | 中国水利水电科学研究院 | Visual test device and method for contact seepage damage of through-embankment pressureless culvert pipe |
| CN112697673B (en) * | 2020-12-14 | 2021-09-17 | 中国水利水电科学研究院 | Visual test device and method for contact seepage damage of through-embankment pressureless culvert pipe |
| CN112986536A (en) * | 2021-02-22 | 2021-06-18 | 中国水利水电科学研究院 | Device and method for simulating contact scouring damage of crossing-dike culvert pipe |
| CN112986536B (en) * | 2021-02-22 | 2022-02-08 | 中国水利水电科学研究院 | Device and method for simulating contact scouring damage of crossing-dike culvert pipe |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170721 Termination date: 20180103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |