CN218098786U - Detection apparatus for drainage road surface infiltration coefficient - Google Patents
Detection apparatus for drainage road surface infiltration coefficient Download PDFInfo
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- CN218098786U CN218098786U CN202221893844.XU CN202221893844U CN218098786U CN 218098786 U CN218098786 U CN 218098786U CN 202221893844 U CN202221893844 U CN 202221893844U CN 218098786 U CN218098786 U CN 218098786U
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Abstract
The utility model discloses a detection device for water seepage coefficient of drainage pavement, which comprises a rainfall simulation device, wherein a holding disc is arranged below the rainfall simulation device; a test piece is placed in the containing disc; an overflow shell is arranged on the periphery of the containing disc; the bottom of the overflow shell is communicated with a reservoir; the reservoir is placed on the support frame. The utility model truly restores the real condition of the road surface in rainy days, thereby measuring the water permeability coefficient of the road surface more truly; the method has the advantages of simple and convenient operation, portability, economy, accurate measurement and truer simulation scene; the Darcy's law of hydrodynamics is utilized, the condition that the measuring result has an error because the direction of water in the traditional detection device is changed can not appear.
Description
Technical Field
The utility model relates to a road maintenance experiment technical field especially relates to a detection apparatus for drainage road surface infiltration coefficient.
Background
In the field of road engineering, how to improve the service function of a road surface and how to provide high-safety, more comfortable and more environment-friendly road surface characteristics to the society has become a new pursued target. The drainage asphalt pavement with the large-gap characteristic has the outstanding advantages of high skid resistance, low noise, water mist inhibition, water drift prevention, glare reduction and the like, achieves the top pavement performance in the prior asphalt pavement technology, and becomes a pavement form for realizing the leap of the surface characteristic quality of the road. The drainage pavement is explored and tried for more than ten years, and the popularization and application stage is entered at present. However, as the drainage pavement is built and used, the permeability to water gradually decreases, and the degree of the decrease varies greatly according to different positions.
At present, a traditional drainage pavement water seepage coefficient detection device cannot simulate real rainfall conditions, and further has certain limitation and inaccuracy; and the measurement time of the traditional drainage pavement water seepage coefficient detection device is very long, so that the measured data is inaccurate.
Therefore, it is necessary to design a detection device for detecting the water permeability coefficient of the drainage pavement, which is convenient to operate, accurate in measurement and capable of simulating a real scene.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a detection apparatus for drainage road surface infiltration coefficient to solve the problem that above-mentioned prior art exists.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a detection device for water seepage coefficient of drainage pavement, which comprises a rainfall simulation device, wherein a holding disc is arranged below the rainfall simulation device; a test piece is placed in the containing disc; an overflow shell is arranged on the periphery of the containing disc; the bottom of the overflow shell is communicated with the reservoir; the reservoir is placed on the support frame.
And pulleys are fixedly arranged at the bottom of the support frame.
The rainfall simulation device comprises a sprinkling plate; a plurality of water outlet holes are formed in the bottom surface of the sprinkling disc at equal intervals; a spray head is arranged at each water outlet; the top of the sprinkling plate is communicated with the automatic booster pump through a water delivery pipe.
And the water delivery pipe is provided with a flow control valve.
The top end of the containing disc extends outwards to form a flow guide extension; the flow guide extension is arranged above the inner cavity of the overflow shell; and an overflow hole is formed in the bottom of the overflow shell and communicated with the reservoir by installing a plurality of overflow pipes.
The holding tray, the test piece with overflow shell structure is the same, all is cube structure or cylinder structure.
The automatic booster pump is fixedly arranged in the water storage tank.
A detection control system is also arranged in the water storage tank; the detection control system comprises a water inlet flowmeter and a backflow flowmeter; the water inlet flow meter is arranged at the communication position of the automatic booster pump and the water delivery pipe; the backflow water flowmeter is arranged at the communication position of the overflow pipe and the reservoir.
A detection method for the water permeability coefficient of a drainage pavement comprises the detection device for the water permeability coefficient of the drainage pavement, and comprises the following steps: determining the water level difference between the opening of the containing tray and the sprinkling tray;
starting the automatic booster pump until the return flow of the overflow pipe is stable, and recording the water flow passing through the test piece in unit time by using a return water flow meter;
and calculating the saturated water seepage coefficient of the test piece.
The calculation formula of the saturated water permeability coefficient k of the test piece is
Wherein Q is the time flow rate of the permeation cross section A within t time;
a is the cross section area of the test piece; i is hydraulic gradient i = Δ h/L, Δ h is head loss; l is the effective height (thickness) of the test piece.
The utility model discloses a following technological effect: the utility model truly restores the real condition of the road surface in rainy days, thereby measuring the water seepage coefficient of the road surface more truly; the method has the advantages of simple and convenient operation, portability, economy, accurate measurement and truer simulation scene; the Darcy's law of hydrodynamics is utilized, the condition that the direction of water changes in the traditional detection device to cause errors in the measurement result can not occur.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic view of the overall structure;
FIG. 2 is a top view of a test piece structure;
wherein, 1, a rainfall simulation device; 2. a holding tray; 3. an overflow shell; 4. a flow control valve; 5. a return water flow meter; 6. a water inlet flow meter; 7. an automatic booster pump; 8. a reservoir; 9. A pulley; 10. a test piece; 11. a support frame; 12. a watering plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The utility model provides a detection device for water seepage coefficient of drainage pavement, which comprises a rainfall simulation device 1, wherein a holding disc 2 is arranged below the rainfall simulation device 1; a test piece 10 is placed in the containing disc 2; the periphery of the containing disc 2 is provided with an overflow shell 3; the bottom of the overflow shell 3 is communicated with a reservoir 8; the reservoir 8 is placed on the support frame 11.
The bottom of the support frame 11 is fixedly provided with a pulley 9.
The rainfall simulation device 1 comprises a watering plate 12; a plurality of water outlet holes are formed in the bottom surface of the sprinkling plate 12 at equal intervals; a spray head is arranged at each water outlet; the top of the sprinkling disc 12 is communicated with the automatic booster pump 7 through a water delivery pipe.
The water pipe is provided with a flow control valve 4.
The top end of the containing disc 2 extends outwards to form a flow guide extension; the diversion extension is arranged above the inner cavity of the overflow shell 3; the bottom of the overflow shell 3 is provided with overflow holes which are communicated with the reservoir 8 by installing a plurality of overflow pipes.
The holding tray 2 and the test piece 10 have the same structure as the overflow shell 3 and are of a cubic structure or a cylindrical structure.
The automatic booster pump 7 is fixedly arranged in the reservoir 8.
A detection control system is also arranged in the reservoir 8; the detection control system comprises a water inlet flow meter 6 and a water return flow meter 5; the water inlet flowmeter 6 is arranged at the communication part of the automatic booster pump 7 and the water delivery pipe; the return water flowmeter 5 is arranged at the communication part of the overflow pipe and the reservoir 8.
A detection method for the water permeability coefficient of a drainage pavement comprises the detection device for the water permeability coefficient of the drainage pavement, and comprises the following steps: determining the water level difference between the opening of the containing disc 2 and the water sprinkling disc 12;
starting the automatic booster pump 7 until the return flow of the overflow pipe is stable, and recording the water flow passing through the test piece 10 in unit time through the return water flow meter 5;
the saturated water permeability coefficient of the test piece 10 was calculated.
Of the test piece 10The saturated water permeability coefficient k is calculated by the formula
Wherein Q is the time flow rate of the permeation cross section A within t time;
a is the cross section area of the test piece; i is hydraulic gradient i = Δ h/L, Δ h is head loss; l is the effective height of the test piece.
In one embodiment of the present invention, the angle of the spray header on the sprinkler disk 12 is adjustable in the present application; the rainfall condition of a real road surface is known, the direction of raindrops is uncertain, and the speed is not zero. Therefore, the traditional method for measuring the water permeability coefficient of the pavement has certain limitations and inaccuracy. Compared with the traditional device, the device well solves the two problems. The detection device can well simulate the falling process of raindrops, not only can enable the raindrops to have speed, but also can enable the raindrops to have directions, and the real condition of the road surface in rainy days is restored more truly, so that the water seepage coefficient of the road surface can be measured more truly.
In one embodiment of the present invention, various rainfall conditions can be simulated by adjusting the power of the automatic booster pump 7 and adjusting the opening degree of the flow control valve 4; the automatic booster pump 7 pumps water in the reservoir 8 into the sprinkling plate 12 for sprinkling for simulation; and then flows back to the reservoir 8 through an overflow pipe to realize cyclic utilization.
In one embodiment of the present invention, the intake flow meter 6 is used to measure the intake rate; the automatic reading of the water seepage rate is realized, human errors in the detection process are eliminated to a great extent, the water seepage stability in the detection process is improved, and the accuracy of the detection result is improved.
In one embodiment of the present disclosure, the test piece 10 is a rut plate test piece.
The utility model discloses an embodiment, this road surface infiltration coefficient detection device has many advantages than traditional infiltration coefficient device. The traditional water seepage coefficient device needs to seal the surrounding area by substances such as plasticine and the like, and the water seepage direction cannot be well ensured, so that the deviation between the measured water seepage coefficient and the true value is possibly large. In addition, the traditional device also needs a heavy weight for balancing, if the heavy weight is light or other conditions occur, the permeation direction of water is likely to change, and therefore the measured permeation coefficient has errors and is not consistent with the true value.
Furthermore, the Darcy's law of hydrodynamics has been used to this device fine, and the advantage of this device lies in can not appearing the condition that the measuring result error takes place because of the direction change of water among the traditional detection device. In addition, some complex operations and devices are omitted, so that complex and tedious work becomes simple and easy to operate, a large amount of manpower and material resources are saved, and the accuracy of the road surface water seepage coefficient is also ensured.
In one embodiment of the present invention, a sealing material is attached to the periphery of the test piece 10.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (8)
1. The utility model provides a detection apparatus for drainage road surface infiltration coefficient, its characterized in that includes: the rainfall simulation device comprises a rainfall simulation device (1), wherein a containing disc (2) is arranged below the rainfall simulation device (1); a test piece (10) is placed in the containing disc (2); an overflow shell (3) is arranged on the periphery of the containing disc (2); the bottom of the overflow shell (3) is communicated with a reservoir (8); the water reservoir (8) is placed on the support frame (11).
2. The detection device for the water permeability coefficient of the drainage pavement according to claim 1, characterized in that: and a pulley (9) is fixedly arranged at the bottom of the support frame (11).
3. The device for detecting the water permeability coefficient of the drainage pavement according to claim 1, wherein: the rainfall simulation device (1) comprises a sprinkling plate (12); a plurality of water outlet holes are formed in the bottom surface of the sprinkling plate (12) at equal intervals; a spray head is arranged at each water outlet; the top of the sprinkling plate (12) is communicated with the automatic booster pump (7) through a water delivery pipe.
4. The apparatus for detecting the water permeability coefficient of a drainage pavement according to claim 3, wherein: and the water conveying pipe is provided with a flow control valve (4).
5. The apparatus for detecting the water permeability coefficient of a drainage pavement according to claim 3, characterized in that: the top end of the containing disc (2) extends outwards to form a flow guide extension; the flow guide extension is arranged above the inner cavity of the overflow shell (3); an overflow hole is formed in the bottom of the overflow shell (3), and the overflow hole is communicated with the reservoir (8) through a plurality of overflow pipes.
6. The detection device for the water permeability coefficient of the drainage pavement according to claim 1, characterized in that: the containing disc (2), the test piece (10) and the overflow shell (3) are of the same structure and are of a cubic structure or a cylindrical structure.
7. The apparatus for detecting the water permeability coefficient of a drainage pavement according to claim 5, characterized in that: the automatic booster pump (7) is fixedly arranged in the water storage tank (8).
8. The apparatus for detecting the water permeability coefficient of a drainage pavement according to claim 5, wherein: a detection control system is also arranged in the reservoir (8); the detection control system comprises a water inlet flow meter (6) and a backflow water flow meter (5); the water inlet flow meter (6) is arranged at the communication part of the automatic booster pump (7) and the water delivery pipe; the backflow water flowmeter (5) is installed at the communication position of the overflow pipe and the water storage tank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221893844.XU CN218098786U (en) | 2022-07-21 | 2022-07-21 | Detection apparatus for drainage road surface infiltration coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221893844.XU CN218098786U (en) | 2022-07-21 | 2022-07-21 | Detection apparatus for drainage road surface infiltration coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218098786U true CN218098786U (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221893844.XU Active CN218098786U (en) | 2022-07-21 | 2022-07-21 | Detection apparatus for drainage road surface infiltration coefficient |
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| CN (1) | CN218098786U (en) |
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2022
- 2022-07-21 CN CN202221893844.XU patent/CN218098786U/en active Active
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