CN111487178B - Non-destructive rapid detection device and method for water permeability of permeable pavement - Google Patents
Non-destructive rapid detection device and method for water permeability of permeable pavement Download PDFInfo
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- CN111487178B CN111487178B CN202010490202.4A CN202010490202A CN111487178B CN 111487178 B CN111487178 B CN 111487178B CN 202010490202 A CN202010490202 A CN 202010490202A CN 111487178 B CN111487178 B CN 111487178B
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- 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
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- 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
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
Abstract
The invention discloses a non-destructive rapid detection device and a non-destructive rapid detection method for water permeability of a permeable pavement, wherein the non-destructive rapid detection device comprises a cart, and a permeable pavement knocking device and an audio collector are arranged at the bottom of the cart; the audio collector is wirelessly connected with an upper computer; and the upper computer obtains the water permeability of the water permeable pavement at the knocking part of the water permeable pavement knocking device according to the comparison curve of the sound frequency of the water permeable pavement received by the audio collector when the received water permeable pavement knocking device knocks the water permeable pavement and the water permeability and knocking sound frequency of the water permeable pavement stored in the upper computer. The invention has simple structure and convenient use, and can quickly detect the water permeability of the permeable pavement by a knocking method, thereby greatly accelerating the detection speed of the water permeability of the permeable pavement.
Description
Technical Field
The invention relates to the field of machinery, in particular to a non-destructive rapid detection device and a non-destructive rapid detection method for water permeability of a permeable pavement.
Background
The permeable pavement is a pavement which is internally provided with a large number of through holes so that the pavement has good water permeability and can quickly allow a large amount of rainwater to permeate into the ground, thereby effectively reducing or eliminating urban rainstorm flood disasters. At present, most of urban pavements are permeable interiors. However, due to the fact that the ground silt and a large amount of suspended particles contained in surface runoff generated by rainfall continuously enter pores of the water permeable material along with water, the pores are blocked, so that the water permeability of the water permeable pavement is improved to be the non-water permeable pavement, the service life is shortened, and the possibility of urban flood and freeze-thaw disasters is increased. Therefore, the water permeability of the permeable pavement needs to be detected. The existing detection device, for example, patent 201711394180.6, discloses an in-situ detector and method for permeability coefficient of a permeable pavement, which detects the permeability of the permeable pavement through the speed of water seepage by injecting water into the permeable pavement under a certain pressure. Although the method is accurate, the detection speed is slow, the traffic is obstructed, and due to different silting conditions of various parts of the permeable pavement, the accurate result can be obtained by carrying out multi-point measurement, and the detection method is a greatly prolonged detection process.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a non-destructive rapid detection device and a non-destructive rapid detection method for water permeability of a permeable pavement. The invention has simple structure and convenient use, and can quickly detect the water permeability of the permeable pavement by a knocking method, thereby greatly accelerating the detection speed of the water permeability of the permeable pavement.
In order to achieve the purpose, the invention mainly provides the following scheme:
a non-destructive rapid detection device for water permeability of a permeable pavement comprises a cart, wherein a permeable pavement knocking device and an audio collector are mounted at the bottom of the cart; the audio collector is wirelessly connected with an upper computer;
the upper computer obtains the water permeability of the water permeable pavement at the knocking part of the water permeable pavement knocking device according to the comparison curve of the sound frequency of the water permeable pavement received by the audio collector when the received water permeable pavement knocking device knocks the water permeable pavement and the water permeability and knocking sound frequency of the water permeable pavement stored in the upper computer;
the method for obtaining the comparison curve of the water permeability of the pavement and the knocking sound frequency comprises the following steps: step one, manufacturing a test pavement which is completely the same as the detected permeable pavement;
knocking the test pavement by using a permeable pavement knocking device, recording the frequency of the sound of the test pavement during knocking, and then detecting and recording the water permeability of the test pavement by using a double-ring method;
thirdly, laying silt on the test pavement, watering to block the permeable pavement, then flushing away excessive silt, and drying the pavement; knocking the test pavement by using a permeable pavement knocking device, recording the frequency of the sound of the test pavement during knocking, and detecting and recording the water permeability of the test pavement by using a double-ring method;
step four, repeating the step three until the water permeability of the test pavement detected by the double-ring method is not changed any more;
and fifthly, respectively making the sound frequency of the test pavement and the water permeability corresponding to the test pavement when the permeable pavement knocking device knocks the test pavement into a horizontal coordinate and a vertical coordinate to obtain a series of marking points, and fitting the series of marking points to obtain a comparison curve of the permeable pavement water permeability and the knocking sound frequency.
In a further improvement, the number of the marking points is not less than one.
In a further improvement, a horn-shaped sound collecting tube is fixed outside the audio collector.
The permeable pavement knocking device comprises a knocking hammer, wherein the knocking hammer is connected with a hammer handle, and the hammer handle is connected to a U-shaped frame fixedly connected with the trolley through a shaft; the tail end of the hammer handle is connected with a telescopic device which is connected with the cart through a shaft.
In a further improvement, the telescopic device is an air cylinder or an oil cylinder.
The trolley is characterized in that a plurality of magnetic blocks are uniformly fixed on the wheels at the bottom of the trolley along the circumferential direction, a magnetic sensor matched with the magnetic blocks is fixed on the trolley, and the magnetic sensor is in wireless connection with an upper computer.
A non-destructive rapid detection method for water permeability of a permeable pavement comprises the following steps:
firstly, establishing a comparison curve of the water permeability of the pavement and the frequency of the knocking sound;
pushing the cart to one end of the permeable pavement to be detected;
pushing the cart, enabling the telescopic device to be telescopic at a preset frequency, enabling the knocking hammer to knock the permeable pavement, collecting sound frequency when the permeable pavement is knocked by the audio collector, comparing the sound frequency with a comparison curve of the pavement permeability and the knocking sound frequency to obtain the permeability of the knocked permeable pavement,
fourthly, the upper computer calculates the action distance of the cart when the knocking hammer strikes the water-permeable path through the times of the magnetic blocks sensed by the magnetic sensor;
fifthly, the water permeability of each knocking point of the permeable pavement is obtained, and the average value is calculated to obtain the integral water permeability of the permeable pavement;
sixthly, when the integral water permeability is lower than a preset threshold value, cleaning the permeable pavement;
and seventhly, after the permeable pavement is cleaned, repeating the second step to the fifth step, detecting whether the cleaned permeable pavement meets the cleaning requirement, and if not, cleaning the permeable pavement again until the requirement is met.
Further improvement, the method for obtaining the comparison curve of the road surface water permeability and the knocking sound frequency is as follows: step one, manufacturing a test pavement which is completely the same as the detected permeable pavement;
knocking the test pavement by using a permeable pavement knocking device, recording the frequency of the sound of the test pavement during knocking, and then detecting and recording the water permeability of the test pavement by using a double-ring method;
thirdly, laying silt on the test pavement, watering to block the permeable pavement, then flushing away excessive silt, and drying the pavement; knocking the test pavement by using a permeable pavement knocking device, recording the frequency of the sound of the test pavement during knocking, and detecting and recording the water permeability of the test pavement by using a double-ring method;
step four, repeating the step three until the water permeability of the test pavement detected by the double-ring method is not changed any more;
and fifthly, respectively making the sound frequency of the test pavement and the water permeability corresponding to the test pavement when the permeable pavement knocking device knocks the test pavement into a horizontal coordinate and a vertical coordinate to obtain a series of marking points, and fitting the series of marking points to obtain a comparison curve of the permeable pavement water permeability and the knocking sound frequency.
The invention has the advantages that:
the invention has simple structure and convenient use, and can quickly detect the water permeability of the permeable pavement by a knocking method, thereby greatly accelerating the detection speed of the water permeability of the permeable pavement.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects and advantages of the present invention more clearly understood, the following detailed description will be made of a non-destructive fast testing apparatus and method for water permeability of a permeable pavement according to the present invention with reference to the accompanying drawings and embodiments.
The principle of the invention is that when the material and the shape of the object are fixed, the sound frequency generated after knocking is only related to the change of the pores in the object, the larger the pores are, the smaller the vibration frequency is, otherwise, the larger the vibration frequency is. Thus, the frequency of sound generated by the vibration of the object can be used to obtain the approximate water permeability.
The nondestructive rapid detection device for the water permeability of the permeable pavement as shown in fig. 1 comprises a cart 1, wherein a permeable pavement knocking device 2 and an audio collector 3 are installed at the bottom of the cart 1; the audio collector 3 is wirelessly connected with an upper computer;
and the upper computer obtains the water permeability of the water permeable pavement at the knocking part of the water permeable pavement knocking device 2 according to the comparison curve of the sound frequency of the water permeable pavement received by the audio collector 3 when the received water permeable pavement knocking device 2 knocks the water permeable pavement and the sound frequency of the knocking sound and the water permeability of the water permeable pavement stored in the upper computer. The number of the marked points is not less than 20. A horn-shaped sound collecting tube 4 is fixed outside the audio collector 3.
The permeable pavement knocking device 2 comprises a knocking hammer 5, the knocking hammer 5 is connected with a hammer handle 6, and the hammer handle 6 is connected to a U-shaped frame 7 fixedly connected with the trolley 1 in a shaft connection mode; the tail end of the hammer handle 6 is connected with a telescopic device 8 which is connected with the cart 1 in a shaft coupling mode.
The telescopic device 8 is a cylinder or an oil cylinder.
A plurality of magnetic blocks 10 are uniformly fixed on a wheel 9 at the bottom of the cart 1 along the circumferential direction, a magnetic inductor 11 matched with the magnetic blocks 10 is fixed on the cart 1, and the magnetic inductor 11 is in wireless connection with an upper computer.
A non-destructive rapid detection method for water permeability of a permeable pavement comprises the following steps:
firstly, establishing a comparison curve of the water permeability of the pavement and the frequency of the knocking sound;
pushing the cart 1 to one end of the permeable pavement to be detected;
step three, pushing the cart 1, enabling the telescopic device 8 to be telescopic at a preset frequency, enabling the knocking hammer 5 to knock the permeable pavement, collecting the sound frequency of the knocked permeable pavement by the audio collector 3, comparing the sound frequency with the comparison curve of the pavement permeability and the knocking sound frequency to obtain the permeability of the knocked permeable pavement,
fourthly, the upper computer calculates the action distance of the trolley when the knocking hammer 5 knocks the waterway surface through the times of the magnetic blocks 10 sensed by the magnetic sensor 11;
fifthly, the water permeability of each knocking point of the permeable pavement is obtained, and the average value is calculated to obtain the integral water permeability of the permeable pavement;
sixthly, when the integral water permeability is lower than a preset threshold value, cleaning the permeable pavement;
and seventhly, after the permeable pavement is cleaned, repeating the second step to the fifth step, detecting whether the cleaned permeable pavement meets the cleaning requirement, and if not, cleaning the permeable pavement again until the requirement is met.
The method for obtaining the comparison curve of the water performance and the knocking sound frequency comprises the following steps: step one, manufacturing a test pavement which is completely the same as the detected permeable pavement;
secondly, knocking the test pavement by using the permeable pavement knocking device 2, recording the frequency of the sound of the test pavement during knocking, and then detecting and recording the water permeability of the test pavement by using a double-ring method;
thirdly, laying silt on the test pavement, watering to block the permeable pavement, then flushing away excessive silt, and drying the pavement; knocking the test pavement by using the permeable pavement knocking device 2, recording the frequency of the sound of the test pavement during knocking, and detecting and recording the water permeability of the test pavement by using a double-ring method;
step four, repeating the step three until the water permeability of the test pavement detected by the double-ring method is not changed any more;
and fifthly, respectively making the sound frequency of the test pavement and the water permeability corresponding to the test pavement when the permeable pavement knocking device 2 knocks the test pavement into a horizontal coordinate and a vertical coordinate to obtain a series of marking points, and fitting the series of marking points to obtain a comparison curve of the permeable pavement water permeability and the knocking sound frequency.
The above is merely an example of the present invention and is not intended to limit the scope of the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A non-destructive rapid detection device for water permeability of a permeable pavement is characterized by comprising a cart (1), wherein the bottom of the cart (1) is provided with a permeable pavement knocking device (2) and an audio collector (3); the audio collector (3) is wirelessly connected with an upper computer;
the upper computer obtains the water permeability of the water permeable pavement at the knocking part of the water permeable pavement knocking device (2) according to the comparison curve of the sound frequency of the water permeable pavement received by the audio collector (3) when the water permeable pavement knocking device (2) knocks the water permeable pavement and the water permeability and knocking sound frequency of the water permeable pavement stored in the upper computer;
the method for obtaining the comparison curve of the water permeability of the pavement and the knocking sound frequency comprises the following steps: step one, manufacturing a test pavement which is completely the same as the detected permeable pavement;
knocking the test pavement by using a permeable pavement knocking device (2), recording the frequency of the sound of the test pavement during knocking, and then detecting and recording the water permeability of the test pavement by using a double-ring method;
thirdly, laying silt on the test pavement, watering to block the permeable pavement, then flushing away excessive silt, and drying the pavement; knocking the test pavement by using a permeable pavement knocking device (2), recording the frequency of the sound of the test pavement during knocking, and detecting and recording the water permeability of the test pavement by using a double-ring method;
step four, repeating the step three until the water permeability of the test pavement detected by the double-ring method is not changed any more;
and fifthly, respectively making the sound frequency of the test pavement and the water permeability corresponding to the test pavement when the permeable pavement knocking device (2) knocks the test pavement into a horizontal coordinate and a vertical coordinate to obtain a series of marking points, and fitting the series of marking points to obtain a comparison curve of the permeable pavement water permeability and the knocking sound frequency.
2. The apparatus for nondestructive rapid detection of water permeability of permeable pavement according to claim 1, wherein the number of the marking points is not less than 20.
3. The non-destructive rapid detection device for the water permeability of the permeable pavement according to claim 1, characterized in that a horn-shaped sound collecting cylinder (4) is fixed outside the audio collector (3).
4. The device for nondestructive rapid detection of water permeability of the permeable pavement according to claim 1, characterized in that the permeable pavement knocking device (2) comprises a knocking hammer (5), the knocking hammer (5) is connected with a hammer handle (6), and the hammer handle (6) is axially connected to a U-shaped frame (7) fixedly connected with the cart (1); the tail end of the hammer handle (6) is connected with a telescopic device (8) which is connected with the cart (1) through a shaft.
5. The device for nondestructive rapid detection of water permeability of permeable pavement according to claim 4, characterized in that the telescopic device (8) is a cylinder or an oil cylinder.
6. The device for nondestructive rapid detection of water permeability of a permeable pavement according to claim 1, characterized in that a plurality of magnetic blocks (10) are uniformly fixed on the wheels (9) at the bottom of the cart (1) along the circumferential direction, a magnetic sensor (11) matched with the magnetic blocks (10) is fixed on the cart (1), and the magnetic sensor (11) is wirelessly connected with an upper computer.
7. A non-destructive rapid detection method for water permeability of a permeable pavement is characterized by comprising the following steps:
step one), establishing a comparison curve of the water permeability of the pavement and the frequency of the knocking sound;
step two), pushing the cart (1) to one end of the permeable pavement to be detected;
step three), pushing the cart (1), and enabling the telescopic device (8) to be telescopic at a preset frequency, so that the knocking hammer (5) knocks the permeable pavement, the audio collector (3) collects the sound frequency when the permeable pavement is knocked and compares the sound frequency with the contrast curve of the pavement water permeability and the knocking sound frequency to obtain the water permeability of the knocked permeable pavement,
step four), the upper computer calculates the action distance of the trolley when the knocking hammer (5) knocks the waterway surface through the times of the magnetic block (10) induced by the magnetic inductor (11);
step five), obtaining the water permeability of each knocking point of the permeable pavement, and calculating the average value to obtain the integral water permeability of the permeable pavement;
sixthly), when the integral water permeability is lower than a preset threshold value, cleaning the permeable pavement;
and step seven), after the permeable pavement is cleaned, repeating the step two) to the step five), detecting whether the cleaned permeable pavement meets the cleaning requirement, and if not, cleaning the permeable pavement again until the requirement is met.
8. The method for nondestructive rapid detection of water permeability of permeable pavement according to claim 7, wherein the method for obtaining the comparison curve of the water permeability of the pavement and the knocking sound frequency is as follows: step one, manufacturing a test pavement which is completely the same as the detected permeable pavement;
knocking the test pavement by using a permeable pavement knocking device (2), recording the frequency of the sound of the test pavement during knocking, and then detecting and recording the water permeability of the test pavement by using a double-ring method;
thirdly, laying silt on the test pavement, watering to block the permeable pavement, then flushing away excessive silt, and drying the pavement; knocking the test pavement by using a permeable pavement knocking device (2), recording the frequency of the sound of the test pavement during knocking, and detecting and recording the water permeability of the test pavement by using a double-ring method;
step four, repeating the step three until the water permeability of the test pavement detected by the double-ring method is not changed any more;
and fifthly, respectively making the sound frequency of the test pavement and the water permeability corresponding to the test pavement when the permeable pavement knocking device (2) knocks the test pavement into a horizontal coordinate and a vertical coordinate to obtain a series of marking points, and fitting the series of marking points to obtain a comparison curve of the permeable pavement water permeability and the knocking sound frequency.
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| CN112834625B (en) * | 2021-01-05 | 2024-03-01 | 长安大学 | Lightweight high-density pavement performance detection method |
| CN117434151B (en) * | 2023-12-15 | 2024-03-19 | 安徽省交通规划设计研究总院股份有限公司 | Method for determining water permeability coefficient of permeable concrete pavement in sound processing vision field |
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| JP2000046803A (en) * | 1998-07-31 | 2000-02-18 | Ono Sokki Co Ltd | Apparatus for measuring drainage properties of road surface |
| JP2011242293A (en) * | 2010-05-19 | 2011-12-01 | Hanshin Expressway Engineering Co Ltd | Road inspection method and road inspection vehicle |
| CN205426738U (en) * | 2015-12-19 | 2016-08-03 | 长安大学 | OGFC rainfall simulation's device and water permeability tester |
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