CN113447637A - Slope rainfall device with controllable horizontal spatial variability and method thereof - Google Patents
Slope rainfall device with controllable horizontal spatial variability and method thereof Download PDFInfo
- Publication number
- CN113447637A CN113447637A CN202110685014.1A CN202110685014A CN113447637A CN 113447637 A CN113447637 A CN 113447637A CN 202110685014 A CN202110685014 A CN 202110685014A CN 113447637 A CN113447637 A CN 113447637A
- Authority
- CN
- China
- Prior art keywords
- rainfall
- water
- raindrop
- voltage
- nozzle
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Special Spraying Apparatus (AREA)
Abstract
The invention relates to the technical field of artificial rainfall simulation, in particular to a slope rainfall device and method with controllable horizontal spatial variability. Wherein the device includes water supply system, filtration system, water delivery system, rainfall system, the rainfall's of control raindrop shower nozzle voltage control system, rainfall system includes the rainfall dish, a plurality of raindrop shower nozzles, water supply system communicates the rainfall dish through water delivery system, filtration system sets up the department of going out at water supply system, filtration system's filter screen aperture is less than or equal to the aperture of raindrop shower nozzle, the rainfall dish is located the top of the side slope proof box that awaits measuring, a plurality of raindrop shower nozzles are connected on the rainfall dish, be equipped with piezoelectricity deformation component on the raindrop shower nozzle, voltage control system is connected to the piezoelectricity deformation component of a plurality of raindrop shower nozzles, voltage control system control raindrop shower nozzle blowout horizontal direction frequency and the raindrop of variation in size. The invention enables different positions to have different raindrop frequencies and sizes, and meets specific variability requirements.
Description
Technical Field
The invention relates to the technical field of artificial rainfall simulation, in particular to a slope rainfall device and method with controllable horizontal spatial variability.
Background
In the existing rain falls device patent, the rain spray head is arranged on a rainwater fluidization box (such as a simulation device for simulating surface loss and underground leakage of karst fissure zones on the surface layer of CN 112611850A), a rainfall frame (such as a simulation test device and a simulation test method for geological disaster chains of CN 112634728A), a three-way water pipe (such as a simulation test device for simulating drainage and ultraviolet aging of asphalt mixture of CN 213022798U, a portable artificial rainfall simulation device of CN 101585024A, a simulation test device and a test method for simulating slopes under the coupling action of CN 103728435A rainfall and underground water, and the like), a spray rod (such as an intelligent multifunctional artificial rainfall simulation system of CN 107402545A) and other parts, and can realize uniform rainfall with different intensities, but cannot change the frequency and magnitude of rainfall in the horizontal direction, i.e., cannot produce rainfall with horizontal spatial variability. Related patents are described below:
CN 112611850A a surface karst fissure zone soil surface loss and underground leakage simulation device: the rainfall simulation platform comprises a flow controller, a rainwater fluidization box, a lifting iron frame, a vibration motor and the like, and four vibration motors, a limiting steel plate and a circular sliding block are adopted to control the vibration amplitude and the frequency of the rainwater fluidization box, so that uniform rainfall with different strengths is realized. However, the use of a rainwater fluidization box does not allow for horizontally non-uniform rainfall, i.e., the horizontal spatial variability of rainfall cannot be controlled.
CN 112634728A geological disaster chain simulation test device and method: the rainfall frame is moved through the movable rolling wheels, the fixed pulleys and the guide rails, the partitioned rainfall on the side slope is simulated, and different rainfall intensities, rainfall types and rainfall time are realized. The rainfall frame moves at the top of the model box through the rollers and the slide rails, and only the block rainfall can be realized (only the area below the rainfall frame is rainy), and the frequency and the size of the rainfall at different positions of the side slope cannot be controlled.
CN 213022798U drainage and ultraviolet ageing analogue test device of bituminous mixture: the invention adopts the water supply pump and the flowmeter to simulate different rainfall intensities (namely, the rainfall intensity is adjusted by adjusting the pump pressure of the water supply pump), and the spray pipe and the spray header which are arranged in a rotary way are arranged, so that the uniform rainfall with different intensities can be realized. However, such conventional showers and showerheads are unable to produce rain with variations in rain drop frequency and size in the horizontal direction.
CN 101585024A portable artificial rainfall analogue means: the rain device is provided with the plurality of detachable nozzles, so that the rainfall can be adjusted by only installing one part of the nozzles to block other water spraying ports according to the requirement of the actual rainfall, the uniform rainfall in a part of areas is realized, the rainfall in other areas is not realized, and the rainfall with horizontal space variability can not be realized.
CN 107402545A intelligent multifunctional artificial rainfall simulation system: the water supply system disclosed by the invention adopts four spray bars to supply water independently, the expansion and contraction of the telescopic rods can be controlled through the PLC, the space between the four spray bars can be further adjusted, different rainfall scales can be realized, the closing of the electromagnetic valve can be controlled, and the independent water supply of each rainfall spray bar can be realized. By utilizing the PLC, the problems that continuous rainfall cannot be realized under the condition of the fault of the spray head of the artificial rainfall simulation device in the prior art, the space heterogeneity of strong rainfall and the single rainfall area cannot be solved, but the rainfall with the space variability in the horizontal direction still cannot be realized.
A slope simulation test device and a test method under the coupling action of CN 103728435A rainfall and underground water are as follows: the invention relates to a slope landslide model test device considering the coupling effect of rainfall infiltration and groundwater change.A spray head is arranged on a PCV three-way pipe, and a pressure water pump, a control valve and an automatic flowmeter are adopted to control rainfall intensity and rainfall capacity, so that uniform rainfall can be generated, and nonuniform rainfall in the horizontal direction cannot be realized.
Some of the techniques use rain fluidization boxes and spray devices, etc. as the water outlet terminals, which produce a plurality of streams of running water, not raindrops, and do not provide rainfall with horizontal spatial variability (i.e., different locations have different raindrop frequencies and sizes).
The spatial variability is realized by controlling the water outlet of different spraying devices through the valve in part of the technology, even if the spraying devices in part of the areas are filled with water and rain but the spraying devices in part of the areas are not filled with water and do not rain, and therefore the horizontal spatial variability is not realized by changing the frequency and the size of raindrops.
Disclosure of Invention
The invention provides a slope rainfall device with horizontal spatial variability and a method thereof, aiming at solving the defects of the prior art.
The invention provides a slope rainfall device with controllable horizontal spatial variability, which comprises a water supply system, a filtering system, a water delivery system, a rainfall system and a voltage control system for controlling raindrop sprayers to make rainfall, wherein the rainfall system comprises a rainfall disc and a plurality of raindrop sprayers, the water supply system is communicated with the rainfall disc through the water delivery system, the filtering system is arranged at the water outlet of the water supply system, the aperture of the filter mesh of the filtering system is smaller than or equal to the aperture of the raindrop sprayers, the rainfall disc is positioned above a slope test box to be tested, the raindrop sprayers are connected onto the rainfall disc, piezoelectric deformation elements are arranged on the raindrop sprayers, the piezoelectric deformation elements of the raindrop sprayers are connected with the voltage control system, and the voltage control system controls the raindrop sprayers to spray raindrops with different frequencies and sizes in the horizontal direction.
As a further improvement of the invention, the raindrop spray head comprises a deformable spray pipe and a water film, wherein a nozzle is arranged at the tail end of the spray pipe, the piezoelectric deformation element is wrapped on the outer wall of the spray pipe, the nozzle is of a structure gradually converging from the spray pipe to the water outlet, and the water film is connected to the water outlet of the nozzle.
As a further improvement of the present invention, the voltage control system includes a voltage gain control circuit board, a half-sine voltage generator and a control terminal, the control terminal is connected to the half-sine voltage generator, and the piezoelectric deformation elements of the raindrop nozzles are connected to the half-sine voltage generator through the voltage gain control circuit board.
As a further improvement of the invention, the rainfall system comprises a hinged ball, the rainfall disc is connected with the water delivery system through the hinged ball, and the hinged ball is of a hollow structure with openings at two ends.
As a further improvement of the present invention, the water supply system includes a water supply tank, the water delivery system includes a water pump, a water delivery pipe, a first water valve, a second water valve, and a flowmeter, one end of the water delivery pipe is connected to the water supply tank, the other end of the water delivery pipe is connected to the rainfall disc, the water pump is connected to the water delivery pipe, the first water valve is connected to the water delivery pipe between the water pump and the rainfall disc, the second water valve is connected to the water delivery pipe between the water supply tank and the water pump, and the flowmeter is connected to the water delivery pipe between the first water valve and the rainfall disc.
As a further improvement of the invention, the slope rainfall device comprises a lifting bracket for adjusting the height of the water delivery pipe, and the water delivery pipe is fixed on the lifting bracket.
The invention also provides a side slope rainfall method with controllable horizontal space variability, which comprises the following steps:
s1, before a side slope rainfall test is carried out, connecting all structural components, and detecting the sealing property and the working state of all the structural components;
s2, driving a piezoelectric deformation element to deform by a control terminal through a half-sine voltage generator and a voltage gain control circuit board so as to extrude water out of a raindrop nozzle in a raindrop mode;
and S3, the control terminal controls the half-sine voltage generator to output different voltage parameters and controls and adjusts the rainfall parameters of the raindrop spray head.
As a further improvement of the present invention, the step S1 specifically includes:
before a side slope rainfall test is carried out, all structural components are connected firstly, the first water valve, the second water valve, the flowmeter and the water pump are ensured to be in a closed state, then the second water valve, the first water valve, the flowmeter and the water pump are opened in sequence, and whether the whole device has a water leakage phenomenon or not and whether all equipment can work normally or not are checked.
As a further improvement of the present invention, the step S2 includes:
s21, in the test process, the raindrop spray head is filled with water all the time, the control terminal adjusts the half sine voltage generator to output a half sine wave, the half sine wave is transmitted to the piezoelectric deformation element through the voltage gain control circuit board, when voltage is applied and a threshold value is reached, the piezoelectric deformation element deforms, the deformation degree is in direct proportion to the voltage, when the voltage reaches an extreme value, the piezoelectric deformation element deforms to the maximum, pressure is generated on the water in the spray head, and the water is extruded out in the raindrop mode;
s22, when the raindrops are just separated from the nozzle, the voltage is reduced to zero, the piezoelectric deformation element immediately returns to an undeformed initial natural state, and the surface tension of a water film at the outlet of the raindrop nozzle prevents the water from flowing out, namely the raindrops are prevented from forming.
As a further improvement of the present invention, the step S3 includes:
s31, the control terminal adjusts the output voltage of the voltage generator, the piezoelectric deformation element obtains different displacement resolutions, different deformations are generated, and the size of the sprayed raindrops is controlled;
s32, the control terminal adjusts the frequency of the output voltage of the voltage generator and controls the rainfall frequency by controlling the piezoelectric deformation element;
s33, the control terminal adjusts the duration of the output voltage of the voltage generator and controls the rainfall duration by controlling the piezoelectric deformation element;
and S34, the control terminal controls the appointed piezoelectric deformation element to participate in work through the voltage generator, and the quantity of raindrop spray heads for rainfall is adjusted to control the rainfall area.
The invention has the beneficial effects that: (1) the slope rainer with controllable horizontal space variability is realized, different positions have different raindrop frequencies and sizes, and specific variability requirements are met; (2) the rainfall appears in a raindrop form, which is more consistent with the real situation; (3) providing rainfall at different angles and heights; (4) a rainwater supply with servo control is provided.
Drawings
FIG. 1 is a schematic diagram of a slope rainfall apparatus with controlled horizontal spatial variability according to the present invention;
FIG. 2 is a schematic structural view of a raindrop sprinkler head according to the present invention when it is not raining;
fig. 3 is a schematic structural view of a raindrop spray head in rainfall according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
The invention is suitable for generating different rainfall conditions in indoor and outdoor slope stability tests, slope surface scouring and sputtering tests and ecological geotechnical slope protection tests, provides controllable rainfall modes (comprising rainfall height, rainfall angle, rainfall intensity, raindrop size and generation frequency, spatial difference and duration), enables the rainfall on the slope to have controllable horizontal spatial variability (namely different raindrop frequencies and sizes at different positions), and defines the influence of the variability on the slope.
As shown in FIG. 1, the slope rainfall device with controllable horizontal spatial variability of the invention comprises a water supply system, a filtering system, a water delivery system, a rainfall system, a lifting system and a voltage control system.
The water supply system comprises a water supply tank 1 and water in the tank for providing a water source for slope rainfall.
The filtration system is a filter 2. One end of the filter 2 is connected with the water outlet of the water supply tank 1, and the other end is connected with the water delivery pipe 5. The aperture of the filter screen in the filter 2 is consistent with that of the raindrop nozzle 10 or smaller than that of the raindrop nozzle 10, and the filter screen is used for filtering impurities precipitated in the water supply tank 1 and preventing the raindrop nozzle 10 from being blocked.
The water delivery system is used for guiding a water source in the water supply tank 1 to the raindrop spray head 10 and comprises a water pump 3, a water delivery pipe 5, a first water valve 6, a second water valve 12 and a flowmeter 7. One end of a water conveying pipe 5 is connected with the water supply tank 1, the other end of the water conveying pipe is connected with a rainfall disc 9, the water pump 3 is connected to the water conveying pipe 5, the first water valve 6 is connected to the water conveying pipe 5 between the water pump 3 and the rainfall disc 9, the second water valve 12 is connected to the water conveying pipe 5 between the water supply tank 1 and the water pump 3, and the flowmeter 7 is connected to the water conveying pipe 5 between the first water valve 6 and the rainfall disc 9. The water pump 3 can provide constant pump pressure, and the water delivery is uniform and stable. The water pump 3 and the flowmeter 7 realize the servo control of the rainfall intensity, and when the rainfall intensity calculated by the flowmeter 7 is lower than a design value, the water supply pressure of the water pump 3 is increased, and vice versa. The water delivery pipe 5 is formed by connecting a horizontal PVC pipe and a vertical telescopic corrugated pipe, and can be matched with a lifting system for use so as to adapt to slope working conditions of different heights. The first water valve 6 can control the water flow to the raindrop nozzle 10, and is a main switch for rainfall. The second water valve 12 controls the flow of water out of the supply tank 1, which is a main water supply switch. The flow meter 7 is used to observe and record the total amount of rainfall.
The rainfall system comprises a hinged ball 8, a rainfall disc 9 and a raindrop spray head 10. The hinged ball 8 can rotate freely and is fixed for changing the rainfall direction, the structure is hollow, and two ends are provided with openings to be connected with the water delivery pipe 5. The hinged ball 8 allows the rain dish 9 and the raindrop spray head 10 to rotate freely, thereby providing different angles of rainfall. The rainfall disc 9 is positioned below the hinged ball 8, a plurality of raindrop spray heads 10 are arranged on the disc surface of the rainfall disc 9, the raindrop spray heads 10 are connected in parallel through a circuit, and a voltage control system provides rainfall power for the raindrop spray heads 10.
The raindrop spray head 10 comprises a deformable spray pipe 17, a piezoelectric deformation element 18 and a water film 19, wherein a spray nozzle 16 is arranged at the tail end of the spray pipe 17. The piezoelectric deformation element 18 is wrapped on the outer wall of the spray pipe 17, and the piezoelectric deformation element 18 is connected with a voltage control system. A water film 19 is connected at the water outlet of the nozzle 16. The piezoelectric deformation element 18 is preferably a piezoelectric ceramic.
The raindrop nozzle 10 mainly uses the principle that the piezoelectric deformation element can be driven by voltage to deform, so that the horizontal spatial variability and raindrop size variability of rainfall are realized. As shown in fig. 2, when no voltage is applied, the piezoelectric deformation element is not deformed, and the surface tension of the water film 19 at the outlet of the raindrop nozzle 10 prevents water from flowing out, i.e., prevents raindrops 20 from forming. When a voltage is applied and a certain threshold value is reached, the piezoelectric deformation element 18 deforms, and the degree of deformation is in direct proportion to the magnitude of the voltage, so that pressure is generated on water in the raindrop nozzle 10, and the water is extruded in the form of raindrops 20. The magnitude and frequency of the voltage applied to the piezoelectric deformation element plate 18 can be varied by a voltage control system, so that the raindrops 20 have different sizes and frequencies, and the horizontal spatial variability of rainfall is realized.
The lifting system comprises a lifting frame 4 for adjusting the height of the rain dish 9 to provide raindrops 20 from different heights.
The voltage control system comprises a voltage gain control circuit board 14, a half-sine voltage generator 13 and a control terminal, wherein the control terminal is a computer 15, and the voltage generator 13 is a half-sine voltage generator. The piezoelectric deformation elements 18 of the raindrop nozzles 10 are connected in parallel to the voltage gain control circuit board 14 through a circuit, the computer 15 is connected with and controls the half-sine voltage generator 13, and the half-sine voltage generator 13 is connected with the voltage gain control circuit board 14. The voltage generated by the half-sine voltage generator 13 is applied to the piezoelectric deformation element pieces on the raindrop nozzle 10 after passing through the voltage gain/amplification circuit, and each piezoelectric deformation element piece can independently obtain half sine waves and voltage gains with different frequencies according to requirements. As shown in fig. 2 and 3, since the piezoelectric sheet 18 is deformed most when the voltage reaches the extreme value in the case of applying the half sine wave, raindrops are formed, and the piezoelectric sheet 18 is restored when the voltage drops to 0. Therefore, the size of the raindrops produced by each raindrop nozzle 10 is proportional to the voltage gain, and the frequency is identical to the voltage frequency. The raindrop nozzles 10 are controlled in parallel, and the raindrop frequency and size generated by different nozzles are determined according to the Markov random field theory, so that the raindrop frequency and size meet certain spatial variability statistical requirements, namely mean value and variance, or the raindrop frequency and size generated by different nozzles are directly specified according to user requirements, and rainfall with controllable horizontal spatial variability is realized. In addition, the total rainfall intensity and the water delivery amount of rainfall are calculated by a circuit and input into the flowmeter 7 to servo-control the water pump 3.
The invention discloses a slope rainfall method with horizontal spatial variability based on a slope rainfall device, which comprises the following steps:
s1, before a side slope rainfall test is carried out, connecting all structural components, and detecting the sealing property and the working state of all the structural components;
s2, a computer 15 of the control terminal drives a piezoelectric deformation element to deform by controlling a voltage generator 13 and a voltage gain control circuit board 14 so as to extrude water out of a raindrop nozzle in a raindrop mode;
and S3, the control terminal controls the driving power supply to output different voltage parameters and controls and adjusts the rainfall parameters of the raindrop spray head.
Specifically, before a side slope rainfall test is performed, all structural components are connected to ensure that all water valves, the flowmeter 7, the water pump 3 and the like are in a closed state, then the second water valve 12, the first water valve 6, the flowmeter 7 and the water pump 3 are opened in sequence, and whether the whole device has a water leakage phenomenon or not and whether all equipment can work normally or not are checked. During the test, the computer 15 controls the half-sine voltage generator 13 to drive the raindrop spray head 10 to start and stop rainfall, and the frequency and the size of rainfall in the horizontal direction can be automatically controlled, so that the horizontal space variability of the rainfall is realized.
Step S2 specifically includes:
s21, in the test process, the raindrop nozzle 10 is filled with water, the control terminal adjusts the half sine voltage generator 13 to output a half sine wave, the half sine wave is transmitted to the piezoelectric deformation element through the voltage gain control circuit board 14, when voltage is applied and a threshold value is reached, the piezoelectric deformation element 18 deforms, the deformation degree is in direct proportion to the voltage, when the voltage reaches an extreme value, the piezoelectric deformation element 18 deforms to the maximum, pressure is generated on water in the nozzle, and the water is extruded out in the raindrop mode;
s22, when the raindrop 20 just separates from the nozzle 16, the voltage drops to zero, the piezoelectric deformation element 18 immediately returns to the original natural state without deformation, and the surface tension of the water film 19 at the outlet of the raindrop nozzle 10 prevents the water from flowing out, i.e. prevents the raindrop 20 from forming.
Step S3 specifically includes:
s31, the control terminal adjusts the output voltage of the voltage generator 13, the piezoelectric deformation element 18 obtains different displacement resolutions, different deformations are generated, and the size of the ejected raindrops is controlled;
s32, the control terminal adjusts the frequency of the voltage output by the voltage generator 13 and controls the rainfall frequency by controlling the piezoelectric deformation element 18;
s33, the control terminal adjusts the duration of the voltage output by the voltage generator 13 and controls the rainfall duration by controlling the piezoelectric deformation element 18;
and S34, the control terminal controls the appointed piezoelectric deformation element 18 to participate in work through the voltage generator 13, and adjusts the quantity of raindrop spray heads 10 for rainfall so as to control the rainfall area.
The invention realizes the slope rainfall device with controllable horizontal space variability, so that different positions have different raindrop frequencies and sizes and meet specific variability requirements; the rainfall appears in a raindrop form, which is more consistent with the real situation; providing rainfall at different angles and heights; a rainwater supply with servo control is provided.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The utility model provides a side slope rainfall device with variability of controllable horizontal space, its characterized in that, including water supply system, filtration system, water delivery system, rainfall system, the rainfall system of control raindrop shower nozzle rainfall, the rainfall system includes rainfall dish, a plurality of raindrop shower nozzle, water supply system communicates the rainfall dish through water delivery system, filtration system sets up the department of producing water at water supply system, filtration system's filter screen aperture is less than or equal to the aperture of raindrop shower nozzle, the rainfall dish is located the top of the side slope test box that awaits measuring, and is a plurality of the raindrop shower nozzle is connected on the rainfall dish, be equipped with piezoelectricity deformation element on the raindrop shower nozzle, it is a plurality of the piezoelectricity deformation element connection voltage control system of raindrop shower nozzle, voltage control system control raindrop shower nozzle blowout horizontal direction frequency and the raindrop of variation in size.
2. The slope rainfall device with controllable horizontal spatial variability of claim 1 wherein the raindrop nozzle comprises a deformable nozzle tube and a water film, the end of the nozzle tube is provided with a nozzle, the piezoelectric deformation element is wrapped on the outer wall of the nozzle tube, the nozzle is a structure gradually converging from the nozzle tube to the water outlet, and the water film is connected to the water outlet of the nozzle.
3. The device of claim 1, wherein said voltage control system comprises a voltage gain control circuit board, a half-sine voltage generator and a control terminal, said control terminal is connected to said half-sine voltage generator, and said piezoelectric deformation elements of said raindrop nozzles are connected to said half-sine voltage generator through said voltage gain control circuit board.
4. The slope rainfall device of claim 1 wherein the rainfall system comprises a hinged ball, the rainfall disk connected to the water delivery system by a hinged ball, the hinged ball being hollow and open at both ends.
5. The slope rainfall device of claim 1 wherein the water supply system comprises a water supply tank, the water delivery system comprises a water pump, a water delivery pipe, a first water valve, a second water valve, and a flow meter, wherein one end of the water delivery pipe is connected to the water supply tank, the other end of the water delivery pipe is connected to the rainfall disc, the water pump is connected to the water delivery pipe, the first water valve is connected to the water delivery pipe between the water pump and the rainfall disc, the second water valve is connected to the water delivery pipe between the water supply tank and the water pump, and the flow meter is connected to the water delivery pipe between the first water valve and the rainfall disc.
6. The device of claim 5, comprising a lifting bracket for adjusting the height of the water pipe, wherein the water pipe is fixed on the lifting bracket.
7. A method of rainfall on a slope with controlled horizontal spatial variability comprising the steps of:
s1, before a side slope rainfall test is carried out, connecting all structural components, and detecting the sealing property and the working state of all the structural components;
s2, driving a piezoelectric deformation element to deform by a control terminal through a half-sine voltage generator and a voltage gain control circuit board so as to extrude water out of a raindrop nozzle in a raindrop mode;
and S3, the control terminal controls the half-sine voltage generator to output different voltage parameters and controls and adjusts the rainfall parameters of the raindrop spray head.
8. The method for rainfall on slopes with controllable level of spatial variability according to claim 7, wherein said step S1 specifically comprises:
before a side slope rainfall test is carried out, all structural components are connected firstly, the first water valve, the second water valve, the flowmeter and the water pump are ensured to be in a closed state, then the second water valve, the first water valve, the flowmeter and the water pump are opened in sequence, and whether the whole device has a water leakage phenomenon or not and whether all equipment can work normally or not are checked.
9. The method for rainfall on slopes with controllable level of spatial variability of claim 7, wherein said step S2 comprises:
s21, in the test process, the raindrop spray head is filled with water all the time, the control terminal adjusts the half sine voltage generator to output a half sine wave, the half sine wave is transmitted to the piezoelectric deformation element through the voltage gain control circuit board, when voltage is applied and a threshold value is reached, the piezoelectric deformation element deforms, the deformation degree is in direct proportion to the voltage, when the voltage reaches an extreme value, the piezoelectric deformation element deforms to the maximum, pressure is generated on the water in the spray head, and the water is extruded out in the raindrop mode;
s22, when the raindrops are just separated from the nozzle, the voltage is reduced to zero, the piezoelectric deformation element immediately returns to an undeformed initial natural state, and the surface tension of a water film at the outlet of the raindrop nozzle prevents the water from flowing out, namely the raindrops are prevented from forming.
10. The method for rainfall on slopes with controllable level of spatial variability of claim 7, wherein said step S3 comprises:
s31, the control terminal adjusts the output voltage of the voltage generator, the piezoelectric deformation element obtains different displacement resolutions, different deformations are generated, and the size of the sprayed raindrops is controlled;
s32, the control terminal adjusts the frequency of the output voltage of the voltage generator and controls the rainfall frequency by controlling the piezoelectric deformation element;
s33, the control terminal adjusts the duration of the output voltage of the voltage generator and controls the rainfall duration by controlling the piezoelectric deformation element;
and S34, the control terminal controls the appointed piezoelectric deformation element to participate in work through the voltage generator, and the quantity of raindrop spray heads for rainfall is adjusted to control the rainfall area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110685014.1A CN113447637B (en) | 2021-06-21 | 2021-06-21 | Slope rainfall device with controllable horizontal spatial variability and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110685014.1A CN113447637B (en) | 2021-06-21 | 2021-06-21 | Slope rainfall device with controllable horizontal spatial variability and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113447637A true CN113447637A (en) | 2021-09-28 |
| CN113447637B CN113447637B (en) | 2022-03-01 |
Family
ID=77812015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110685014.1A Active CN113447637B (en) | 2021-06-21 | 2021-06-21 | Slope rainfall device with controllable horizontal spatial variability and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113447637B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640501A (en) * | 2021-10-13 | 2021-11-12 | 四川省公路规划勘察设计研究院有限公司 | Bedding rock slope simulation test device under coupling effect of rainfall and underground water |
| NL2030188B1 (en) * | 2021-12-18 | 2022-10-07 | Univ Hohai | An artificial rainfall simulation device composed by multiple nozzles and units |
| CN116908416A (en) * | 2023-09-13 | 2023-10-20 | 中山大学 | Multifunctional rainfall landslide simulation test system and method |
| CN116908415A (en) * | 2023-09-13 | 2023-10-20 | 中山大学 | Rainfall landslide simulation test device and method with variable landslide surface morphology |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011240294A (en) * | 2010-05-20 | 2011-12-01 | Kitakyushu Foundation For The Advancement Of Industry Science & Technology | Rainfall apparatus |
| CN103143465A (en) * | 2013-02-25 | 2013-06-12 | 中国水利水电科学研究院 | System and method for simulating regional rainfall process |
| CN103283545A (en) * | 2013-04-09 | 2013-09-11 | 华南理工大学 | Automatic control combined simulated rainfall device based on Stm 32 microcontroller |
| CN103439759A (en) * | 2013-07-31 | 2013-12-11 | 中国人民解放军理工大学 | Speed regulation rotary type precipitation particle standard device |
| CN103885095A (en) * | 2014-01-10 | 2014-06-25 | 中国人民解放军理工大学 | Surface uniform rainfall field simulation device |
| CN107014978A (en) * | 2017-04-10 | 2017-08-04 | 中国农业大学 | A kind of method and device for controlling raindrop diameter in artificially-simulated rainfall and being distributed |
| CN107064458A (en) * | 2017-03-20 | 2017-08-18 | 安徽工业大学 | It is a kind of to produce the artificially-simulated rainfall device and method of Various Complex rainfall pattern |
| CN107544593A (en) * | 2017-09-15 | 2018-01-05 | 华中农业大学 | A kind of method of needle-based rainfall simulator and its simulated rainfall |
| CN110320344A (en) * | 2019-07-10 | 2019-10-11 | 中原工学院 | A kind of rainfall simulator and method for centrifugal model test |
| CN110823741A (en) * | 2019-11-07 | 2020-02-21 | 常州合欣达旭新能源科技发展有限公司 | Rainfall simulator |
| CN112147308A (en) * | 2020-10-23 | 2020-12-29 | 昆明理工大学 | Artificial rainfall simulation system and method suitable for strip mine slope field test |
-
2021
- 2021-06-21 CN CN202110685014.1A patent/CN113447637B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011240294A (en) * | 2010-05-20 | 2011-12-01 | Kitakyushu Foundation For The Advancement Of Industry Science & Technology | Rainfall apparatus |
| CN103143465A (en) * | 2013-02-25 | 2013-06-12 | 中国水利水电科学研究院 | System and method for simulating regional rainfall process |
| CN103283545A (en) * | 2013-04-09 | 2013-09-11 | 华南理工大学 | Automatic control combined simulated rainfall device based on Stm 32 microcontroller |
| CN103439759A (en) * | 2013-07-31 | 2013-12-11 | 中国人民解放军理工大学 | Speed regulation rotary type precipitation particle standard device |
| CN103885095A (en) * | 2014-01-10 | 2014-06-25 | 中国人民解放军理工大学 | Surface uniform rainfall field simulation device |
| CN107064458A (en) * | 2017-03-20 | 2017-08-18 | 安徽工业大学 | It is a kind of to produce the artificially-simulated rainfall device and method of Various Complex rainfall pattern |
| CN107014978A (en) * | 2017-04-10 | 2017-08-04 | 中国农业大学 | A kind of method and device for controlling raindrop diameter in artificially-simulated rainfall and being distributed |
| CN107544593A (en) * | 2017-09-15 | 2018-01-05 | 华中农业大学 | A kind of method of needle-based rainfall simulator and its simulated rainfall |
| CN110320344A (en) * | 2019-07-10 | 2019-10-11 | 中原工学院 | A kind of rainfall simulator and method for centrifugal model test |
| CN110823741A (en) * | 2019-11-07 | 2020-02-21 | 常州合欣达旭新能源科技发展有限公司 | Rainfall simulator |
| CN112147308A (en) * | 2020-10-23 | 2020-12-29 | 昆明理工大学 | Artificial rainfall simulation system and method suitable for strip mine slope field test |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640501A (en) * | 2021-10-13 | 2021-11-12 | 四川省公路规划勘察设计研究院有限公司 | Bedding rock slope simulation test device under coupling effect of rainfall and underground water |
| NL2030188B1 (en) * | 2021-12-18 | 2022-10-07 | Univ Hohai | An artificial rainfall simulation device composed by multiple nozzles and units |
| CN116908416A (en) * | 2023-09-13 | 2023-10-20 | 中山大学 | Multifunctional rainfall landslide simulation test system and method |
| CN116908415A (en) * | 2023-09-13 | 2023-10-20 | 中山大学 | Rainfall landslide simulation test device and method with variable landslide surface morphology |
| CN116908416B (en) * | 2023-09-13 | 2024-02-13 | 中山大学 | Multifunctional rainfall landslide simulation test system and method |
| CN116908415B (en) * | 2023-09-13 | 2024-05-17 | 中山大学 | Rainfall landslide simulation test device and method with variable landslide surface morphology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113447637B (en) | 2022-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113447637B (en) | Slope rainfall device with controllable horizontal spatial variability and method thereof | |
| CN111551694B (en) | Slope instability experimental device and method with rainfall and overload as inducers | |
| CN201556340U (en) | Movable type adjustable rainfall simulator | |
| CN111855121B (en) | Slope instability experimental device and experimental method using rainfall and earthquake as inducements | |
| CN105891037A (en) | Slope scouring simulation test device | |
| CN109192052A (en) | Dynamic construction Landform Evolution physical simulation experiment device and experimental method | |
| CN105926692A (en) | Raining simulation device for slope washing test | |
| CN113063925A (en) | Multi-factor coupling test system for researching instability and damage mechanism of foundation pit and side slope | |
| CN104678077B (en) | A kind of pin blockage resisting artificial Field simulation rainer | |
| CN106290127A (en) | The rainfall simulator of simulation laboratory test is washed away for roadbed side slope | |
| CN106706886B (en) | Rainfall slope model experiment device and method under lateral non-uniform loading condition | |
| CN209542345U (en) | A kind of side slope surface antiscour experimental rig | |
| CN215180182U (en) | Side slope rainfall device with controllable horizontal space variability | |
| CN106153863A (en) | Roadbed side slope washes away simulation laboratory test device | |
| CN106596897A (en) | Test device and method for measuring slope fixation effects and water absorption performances of reinforced plant soil | |
| KR102206840B1 (en) | Apparatus for testing artificial rainfall | |
| CN107843714B (en) | Artificial rainfall simulation device for debris flow test | |
| CN107764500A (en) | A kind of rainfall simulator for wind energy conversion system wind and rain coupling test | |
| CN110320344A (en) | A kind of rainfall simulator and method for centrifugal model test | |
| Kesgin et al. | Rainfall simulator for investigating sports field drainage processes | |
| CN214277768U (en) | Test device for simulating flowing water scouring behavior of asphalt mixture | |
| CN105973789B (en) | Rain erosion simulation device special for earthen site | |
| KR102302420B1 (en) | Apparatus for testing artificial rainfall | |
| CN110820711A (en) | Rainfall-adjustable deep foundation pit multi-support-form test device and method | |
| CN114609366B (en) | Rainfall simulation system for outdoor large-scale slope model experiment |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |