A comparative test device and comparative test method of road surface water seepage meter

Abstract

The present invention discloses a comparison test device for a road surface water seepage meter, comprising a water tank body and a supporting disc and an adjusting disc arranged on the upper part thereof, wherein the contact surfaces of the supporting disc and the adjusting disc are closely attached, the upper surface of the supporting disc is used for sealing connection with the bottom of the road surface water seepage meter, and a water leakage hole is arranged on the supporting disc, and a water seepage hole which can be aligned with and staggered with the water leakage hole is arranged on the adjusting disc, and a sealing mechanism is arranged on the contact surface of the supporting disc and the adjusting disc. The supporting disc and the adjusting disc are both made of non-water-permeable materials. The adjusting disc is provided with a plurality of water seepage holes of different specifications. A comparison test method for the comparison test device is also disclosed. The present invention can achieve the staggering and connection of the water leakage hole and the water seepage hole by arranging two closely attached supporting discs and adjusting discs, so as to realize the detection of the sealing performance and different water seepage speeds of the road surface water seepage meter. The comparison test method can effectively compare the reliability of the water seepage test results of different road surface water seepage meters, and thus effectively evaluate the detection capability of the detection mechanism.

Description

Technical Field

[0001] The invention relates to the field of test detection capability verification, and in particular to a comparison test device of a road surface water seepage meter and a comparison test method thereof. Background Art

[0002] Pavement refers to a layered structure made of road-building materials laid on the roadbed for vehicles to travel. The pavement has the functions of bearing the weight of vehicles, resisting wheel wear and keeping the road surface flat. The quality of the pavement directly affects the smoothness and safety of transportation. Among them, the pavement water permeability is an important factor that directly affects the durability of the pavement and occupies an important position in the pavement quality inspection.

[0003] In actual work, a pavement water seepage meter is used to test the water seepage coefficient of asphalt pavement on site. The structure of the existing pavement water seepage meter is as shown in the attached figure. Figure 1 As shown, it includes a water measuring cylinder 1, a bracket 2, a valve 3, a base 4, a sealing material 5 and a weighted steel ring 6, and an exhaust hole 7 is provided on the upper part of the base 4. The water measuring cylinder 1 is made of transparent organic glass, with a capacity of 600mL, a scale on the outer wall, and thick markings at 100mL and 500mL. The bottom is connected to the base 4 through a Φ10mm capillary tube, and the valve 3 is set in the middle of the capillary tube. The water measuring cylinder 1 is connected to the base 4 through the bracket 2. The middle part of the lower surface of the base 4 is set to a conical cavity structure, and the conical cavity structure is connected to the capillary tube. The exhaust hole 7 is connected to the conical cavity structure. A sealing material 5 is provided at the outer edge of the lower surface of the base 4 to achieve sealing between the base and the road surface.

[0004] When the pavement water seepage meter is conducting pavement water seepage detection, it will be affected by factors such as the sealing properties of the sealing material, the diameter of the capillary tube, the installation position of the vent hole, etc., resulting in inaccurate test result data of the pavement water seepage meter, making it impossible to determine the ability level of different testing agencies in detecting pavement water seepage coefficients and the reliability of the test data.

[0005] Comparison test refers to the organization, implementation and evaluation of the same test object (called "capability verification object") by multiple laboratories according to pre-specified conditions. Comparison test is a form of laboratory capability verification. It can evaluate whether the testing and inspection agency is competent for the testing and inspection work it is engaged in and whether the data issued is reliable and valid. It is also one of the technical means for metrology certification agencies and management agencies to determine the laboratory capabilities. If the technical level of the inspection agency is judged by conducting comparison tests, it is necessary to have appropriate capability verification items. The object of the pavement water permeability meter is the pavement. Since the water permeability of the pavement will be affected for a period of time after the test, the pavement does not meet the conditions of being a capability verification item. Therefore, the comparison test of the pavement water permeability meter has not been effectively carried out.

[0006] This application is based on the above-mentioned situation and creates a comparison test device and a comparison test method for pavement water seepage meters, so that they can be effectively used in the comparison test of pavement water seepage meters, to realize the evaluation of the reliability and effectiveness of the pavement water seepage meter detection data, and to realize the evaluation of whether the detection agency is competent for the work ability of pavement water seepage detection. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a comparison test device for a pavement water seepage meter, so that it can be effectively used in the comparison test of the pavement water seepage meter, to realize the evaluation of the reliability and effectiveness of the pavement water seepage meter detection data, and to realize the evaluation of whether the detection agency is competent for the work ability of pavement water seepage detection.

[0008] In order to solve the above technical problems, the present invention provides a comparison test device for a pavement water permeability meter, comprising a water trough body, and a supporting disc and an adjusting disc arranged on the upper part of the water trough body, the contact surfaces of the supporting disc and the adjusting disc are tightly fitted, the upper surface of the supporting disc is used to be sealed and connected with the bottom of the pavement water permeability meter, and a leakage hole is provided on the supporting disc, and a seepage hole is provided on the adjusting disc, the seepage hole is aligned and staggered with the leakage hole when the adjusting disc and the supporting disc are in different tightly fitted positions, and a sealing mechanism is provided at the edge of the contact surface of the supporting disc and the adjusting disc.

[0009] As a further improvement, the supporting disc and the adjusting disc are both made of water-impermeable material.

[0010] As a further improvement, the sealing mechanism comprises two oppositely disposed sealing ring grooves respectively disposed at the edges of the contact surfaces of the support disc and the adjustment disc, and a sealing strip disposed in the sealing ring grooves, wherein the two oppositely disposed sealing strips are configured to form a concave-convex close-fitting structure.

[0011] As a further improvement, a plurality of water seepage holes of different sizes are provided on the adjusting disc, and as the adjusting disc rotates at different angles relative to the supporting disc, the water seepage holes are aligned with the water seepage holes of different sizes.

[0012] As a further improvement, the regulating disc has a non-water seepage hole area for sealing the water leakage hole.

[0013] As a further improvement, two symmetrically arranged water leakage holes are arranged on the supporting disc, and two arc-shaped water seepage hole groups corresponding to the two water leakage holes are arranged on the adjusting disc, and the arc-shaped water seepage hole groups are composed of water seepage holes with gradually increasing diameters.

[0014] As a further improvement, the outer side walls of the support disc and the adjustment disc are both provided with adjustment scales, and the adjustment scales are used to indicate the alignment status of the leakage holes and seepage holes of different specifications.

[0015] As a further improvement, a clamping structure for fixing different close-fitting angles between the supporting disc and the adjusting disc is provided on the contact surfaces of the supporting disc and the adjusting disc.

[0016] As a further improvement, the upper edge of the water tank of the water tank body is provided with a countersunk hole for mounting the supporting disc and the adjusting disc, and the bottom of the water tank of the water tank body is provided with a drainage hole.

[0017] The present invention also provides a comparison test method according to the comparison test device of the pavement water permeability meter, the method comprising the following steps:

[0018] (1) According to a preset water seepage speed, align the water seepage holes of corresponding specifications in the adjusting disc with the water leakage holes in the supporting disc, and after the adjusting disc and the supporting disc are fixedly assembled, install them on the water tank body;

[0019] (2) placing the pavement water seepage meter on the upper surface of the supporting disc through a sealing material, opening the valve and the vent hole of the pavement water seepage meter, and injecting water into the measuring cylinder until water flows out of the vent hole of the pavement water seepage meter, then closing the valve and the vent hole; and injecting water into the measuring cylinder again until the mark of 100 ml is reached;

[0020] (3) Open the valve, and when the water level drops to the 100 ml mark, immediately start the stopwatch and start timing. When the water level drops to 500 ml in less than 3 min, immediately record the time when the water level drops to 500 ml and end the test. If the water level fails to drop to the 500 ml mark within 3 min after the switch is turned on, immediately record the water volume after 3 min and end the test.

[0021] (4) After emptying the water in the water tank body, reset the alignment position of the adjustment disc and the support disc, or replace the sealing combination of a different pavement water seepage meter and the support disc, repeat the above steps (1) to (3), complete the detection data of the pavement water seepage meter under different seepage rate conditions or different pavement water seepage meters under the same seepage rate conditions, and finally complete the comparison test of the pavement water seepage meter.

[0022] As a further improvement, the method further comprises a pre-test step of testing the sealing performance, the step being:

[0023] (1) Align the water leakage hole in the supporting disc with the non-water seepage hole area of ​​the adjusting disc, and after the adjusting disc and the supporting disc are fixedly assembled, install them on the water tank body;

[0024] (2) placing a pavement water seepage meter on the upper surface of the support disc through a sealing material, opening the valve and the vent hole of the pavement water seepage meter, and injecting water into the measuring cylinder until water flows out of the vent hole of the pavement water seepage meter, then closing the valve and the vent hole; and injecting water into the measuring cylinder again to the 100 ml mark;

[0025] (3) Open the valve and observe whether the water level in the measuring cylinder drops. If the water level drops, it is judged that the sealing is unqualified. If the water level does not drop, it is judged that the sealing is qualified.

[0026] After adopting such a design, the present invention has at least the following advantages:

[0027] 1. The comparison test device of the pavement water seepage meter of the present invention can realize the staggering and connection of the leakage hole and the seepage hole by arranging two closely fitting supporting discs and adjusting discs, so as to realize the detection of the sealing performance and the seepage speed of the pavement water seepage meter. It can be used as a capability verification item of the pavement water seepage meter comparison test to ensure the stability of the pavement water seepage meter comparison test.

[0028] 2. By providing a plurality of seepage holes of different specifications on the adjusting disc, the detection of different seepage speeds can be realized to complete the comparison test of different seepage levels.

[0029] 3. A sealing mechanism is provided between the contact surfaces of the supporting disc and the adjusting disc to ensure the sealing between the supporting disc and the adjusting disc, thereby preventing water from flowing out from the gap between the two discs and affecting the final water seepage result.

[0030] 4. By setting an adjustment scale on the outer wall of the supporting disc and the adjusting disc, the alignment status indication of the leaking hole and the seepage holes of different specifications can be realized conveniently and quickly, which is convenient for adjustment and practical. By setting a clamping structure on the contact surface of the supporting disc and the adjusting disc, the fixation of different seepage states can be realized, which is stable and reliable.

[0031] 5. The present invention can effectively carry out comparison tests of pavement water seepage meters of different testing institutions by utilizing the comparison test method, thereby evaluating whether the testing institutions have the ability to perform the testing work and whether the water seepage test data they provide are reliable and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Figure 1 It is a structural schematic diagram of an existing pavement water seepage meter.

[0034] Figure 2The present invention is a schematic structural diagram of a comparison test device of a road surface water seepage meter combined with a road surface water seepage meter.

[0035] Figure 3 It is a partially enlarged cross-sectional view of a sealing rubber strip in a comparison test device of a road surface water permeability meter of the present invention.

[0036] Figure 4 It is a schematic diagram of the lower surface structure of a supporting disc in a comparison test device of a road surface water permeability meter of the present invention.

[0037] Figure 5 The present invention is a schematic diagram of the upper surface structure of an adjusting disc in a comparison test device of a road surface water permeability meter. DETAILED DESCRIPTION

[0038] In view of the fact that there is no capability verification item suitable for the comparison test of the pavement water seepage meter at present, the present application develops the comparison test device of the pavement water seepage meter. The specific embodiment thereof is as follows.

[0039] See attached Figures 2 to 5 As shown, the comparative test device of the pavement water seepage meter of this embodiment includes a water tank body 11, and a support disc 12 and an adjustment disc 13 arranged on the upper part of the water tank body 11. The upper surface of the support disc 12 is used to achieve a sealing connection with the pavement water seepage meter through a sealing material 5 to achieve support for the pavement water seepage meter.

[0040] In this embodiment, the upper edge of the water tank 111 of the water tank body 11 is provided with a countersunk hole for installing the supporting disc 12 and the adjusting disc 13, and the water tank 111 is used to receive the water that seeps down from the road water infiltration meter through the supporting disc and the adjusting disc. The bottom of the water tank 111 of the water tank body 11 is provided with a drain hole 112 for emptying the seepage water in the water tank 111.

[0041] The support disc 12 and the adjustment disc 13 are both made of non-water-permeable materials, such as iron discs. A water leakage hole 121 is provided in the area opposite to the conical cavity structure of the road water seepage meter. In this embodiment, two symmetrically arranged water leakage holes 121 are provided on the support disc 12. Figure 4 The adjusting disc 13 is provided with a seepage hole 131 which can be aligned with or staggered with the leak hole 121. The seepage hole 131 can be of one or more different specifications, as shown in the attached Figure 5 In this embodiment, two arc-shaped water seepage hole groups corresponding to the two water leakage holes 121 are arranged on the adjusting disc 13, and the arc-shaped water seepage hole group is composed of water seepage holes 131 with gradually increasing diameters. As the adjusting disc 13 rotates relative to the supporting disc 12, the water seepage speeds achieved are different due to the different diameters of the water seepage holes. And as the diameter of the water seepage hole increases, the water seepage speed will gradually increase.

[0042] Of course, the adjusting disc 13 has a non-seepage hole area for sealing the water leakage hole 121. When the area corresponds to the water leakage hole 121, the water leakage hole 121 is in a closed state, so as to detect the sealing performance of the road surface water seepage meter.

[0043] Moreover, in this embodiment, a sealing mechanism is provided at the edge of the contact surface of the support disc 12 and the adjustment disc 13. The sealing mechanism includes two oppositely arranged sealing ring grooves 14 arranged at the edge of the contact surface of the support disc and the adjustment disc, and a sealing rubber strip 15 is provided in the sealing ring groove 14. The sealing ring groove 14 is arranged at the periphery of the water leakage hole 121 and the water seepage hole 131, and at least the support disc 12 and the adjustment disc 13 are closely attached to each other in the middle area of ​​the sealing ring groove 14. This structure can ensure that water will not flow between the support disc and the adjustment disc and flow out from the gap between the two discs, thereby ensuring the accuracy of water seepage detection.

[0044] In this embodiment, the sealing strip 15 in the sealing ring groove of the support disc 12 and the sealing strip 15 in the sealing ring groove of the adjustment disc 13 are arranged to form a concave-convex close contact structure, as shown in the attached Figure 3 As shown, it can achieve better close contact effect.

[0045] In order to facilitate the adjustment of the rotation position of the adjustment disc, an adjustment scale is provided on the outer side wall of the support disc 12 and the adjustment disc 13. The adjustment scale is used to indicate the alignment state of the leak hole 121 and the seepage holes 131 of different specifications, or to indicate that the drain hole is in a closed state, which is convenient for operation.

[0046] Alternatively, in this embodiment, corresponding clamping structures can be provided on the contact surfaces of the support disc 12 and the adjustment disc 13 to fix the different fitting angles of the adjustment disc relative to the support disc, so that the positions of the support disc and the adjustment disc can be fixed more accurately.

[0047] The comparison test method of different pavement water seepage meters using the comparison test device of the pavement water seepage meter comprises the following steps:

[0048] First, the sealing of the pavement water seepage meter is pre-checked. The steps of the sealing pre-check include:

[0049] (1) The leaking hole 121 in the supporting disc 12 is not aligned with any seepage hole 131 in the adjusting disc 13, that is, the leaking hole is sealed, and the adjusting disc 13 and the supporting disc 12 are fixedly assembled and installed on the water tank body 11;

[0050] (2) The pavement water seepage meter is arranged on the upper surface of the supporting disc 12 through the sealing material 5, the valve 3 and the vent hole 7 of the pavement water seepage meter are opened, and water is injected into the measuring cylinder 1 until water flows out of the vent hole 7 of the pavement water seepage meter, and then the valve 3 and the vent hole 7 are closed; and water is injected into the measuring cylinder 1 again to the 100 ml mark;

[0051] (3) Open valve 3 and observe whether the water level in measuring cylinder 1 drops. If the water level drops, it is judged that the sealing is unqualified and the sealing material is reset; if the water level does not drop, it is judged that the sealing is qualified and the water seepage comparison test is continued.

[0052] The specific steps of the water seepage comparison test are as follows:

[0053] (4) According to a preset water seepage speed, the seepage holes 131 of corresponding specifications in the adjusting disc 13 are adjusted to align with the leakage holes 121 in the supporting disc 12, and after the adjusting disc 12 and the supporting disc 13 are fixedly assembled, they are installed on the water tank body 11;

[0054] (5) Then open the valve 3 and the vent 7 of the pavement water seepage meter, and fill water into the measuring cylinder 1 until water flows out of the vent 7 of the pavement water seepage meter, then close the valve 3 and the vent 7; and fill water into the measuring cylinder 1 again until the mark of 100 ml is reached;

[0055] (6) Open valve 3, and when the water level drops to the 100ml mark, immediately start the stopwatch to start timing. When the water level drops to 500ml in less than 3min, immediately record the time when the water level drops to 500ml and end the test. If the water level cannot drop to the 500ml mark within 3min after the switch is turned on, immediately record the water volume after 3min and end the test. Then the water seepage rate under this state can be calculated.

[0056] (7) After emptying the water in the water tank 111, reset the alignment position of the adjustment disc 13 and the support disc 12, repeat steps (4) to (6), complete the water seepage rate under this state, and test in sequence until the detection data of the pavement water seepage meter under different water seepage rate conditions are completed.

[0057] According to the above steps, the water seepage rate tests of the pavement water seepage meters of different testing institutions are completed in turn, and finally the water seepage comparison test of different pavement water seepage meters under the same conditions is realized, and the comparison test results are issued after statistical analysis.

[0058] The present invention adopts the comparison test device with stable and reliable water seepage rate as the capability verification item for the pavement water seepage meter comparison test, thereby ensuring the stability of the pavement water seepage meter comparison test; by using the comparison test device to carry out the comparison test of the pavement water seepage meter, the comparison test of the pavement water seepage meters of different testing institutions can be effectively carried out, thereby evaluating whether the testing and inspection institutions have the level of competence for the testing and inspection work they are engaged in, and whether the water seepage test data they issue are reliable and effective.

[0059] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Those skilled in the art may make some simple modifications, equivalent changes or modifications using the technical contents disclosed above, which all fall within the protection scope of the present invention.

Claims

1. A comparative test device for a road surface water seepage meter, the road surface water seepage meter comprising a water measuring cylinder and a base arranged at the bottom thereof, a cavity is arranged in the middle of the lower surface of the base, the bottom of the water measuring cylinder is communicated with the cavity of the base, and a valve is arranged at the bottom of the water measuring cylinder, and an exhaust hole communicating with the cavity is arranged at the upper part of the base, characterized in that: The comparison test device comprises a water tank body, and a supporting disc and an adjusting disc arranged on the upper part of the water tank body, the contact surfaces of the supporting disc and the adjusting disc are in close contact, the upper surface of the supporting disc is used to be sealed and connected with the bottom of the road surface water permeability meter, and the supporting disc is provided with a leaking hole, and the adjusting disc is provided with a seepage hole, the seepage hole is aligned and staggered with the leaking hole when the adjusting disc and the supporting disc are in different close contact positions, and a sealing mechanism is provided at the edge of the contact surface of the supporting disc and the adjusting disc; The supporting disc and the adjusting disc are both made of non-permeable material. The upper edge of the water tank body is provided with countersunk holes for installing the supporting disc and the adjusting disc, and the bottom of the water tank body is provided with drainage holes.

2. The comparison test device of the road surface water permeability meter according to claim 1 is characterized in that: The sealing mechanism comprises two oppositely arranged sealing ring grooves respectively arranged at the edges of the contact surfaces of the supporting disc and the adjusting disc, and sealing strips respectively arranged in the sealing ring grooves. The two oppositely arranged sealing strips are arranged to form a concave-convex close-fitting structure.

3. The comparison test device of the road surface water permeability meter according to claim 1 is characterized in that: The adjusting disc is provided with a plurality of water seepage holes of different sizes. As the adjusting disc rotates at different angles relative to the supporting disc, the water seepage holes are aligned with the water seepage holes of different sizes.

4. The comparison test device of the road surface water permeability meter according to claim 3 is characterized in that: The supporting disc is provided with two symmetrically arranged water leakage holes, and the adjusting disc is provided with two arc-shaped water seepage hole groups respectively corresponding to the two water leakage holes, and the arc-shaped water seepage hole groups are composed of water seepage holes with gradually increasing diameters.

5. The comparison test device for road surface water permeability meter according to claim 3, characterized in that: The outer side walls of the supporting disc and the adjusting disc are both provided with adjusting scales, and the adjusting scales are used to indicate the alignment status of the water leakage holes and water seepage holes of different specifications.

6. The comparison test device for road surface water permeability meter according to claim 3, characterized in that: The contact surfaces of the supporting disc and the adjusting disc are provided with a clamping structure for fixing the different close contact angles between the two.

7. A comparative test method of the comparative test device of the road surface water permeability meter according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: (1) According to a preset water seepage speed, align the water seepage holes of corresponding specifications in the adjusting disc with the water leakage holes in the supporting disc, and after the adjusting disc and the supporting disc are fixedly assembled, install them on the water tank body; (2) placing the pavement water seepage meter on the upper surface of the supporting disc through a sealing material, opening the valve and the vent hole of the pavement water seepage meter, and injecting water into the measuring cylinder until water flows out of the vent hole of the pavement water seepage meter, then closing the valve and the vent hole; and injecting water into the measuring cylinder again until the mark of 100 ml is reached; (3) Open the valve, and when the water level drops to the 100 ml mark, immediately start the stopwatch and start timing. When the water level drops to 500 ml in less than 3 min, immediately record the time when the water level drops to 500 ml and end the test. If the water level fails to drop to the 500 ml mark within 3 min after the switch is turned on, immediately record the water volume after 3 min and end the test. (4) After emptying the water in the water tank body, reset the alignment position of the adjustment disc and the support disc, or replace the sealing combination of a different pavement water seepage meter and the support disc, repeat the above steps (1) to (3), complete the detection data of the pavement water seepage meter under different seepage rate conditions or different pavement water seepage meters under the same seepage rate conditions, and finally complete the comparison test of the pavement water seepage meter.

8. The comparison test method of the comparison test device of the road surface water permeability meter according to claim 7 is characterized in that: The method further comprises a pre-test step for testing the sealing performance, the step comprising: (1) Align the water leakage hole in the supporting disc with the non-water seepage hole area of ​​the adjusting disc, and after fixing and assembling the adjusting disc and the supporting disc, install them on the water tank body; (2) placing a pavement water seepage meter on the upper surface of the support disc through a sealing material, opening the valve and the vent hole of the pavement water seepage meter, and injecting water into the measuring cylinder until water flows out of the vent hole of the pavement water seepage meter, then closing the valve and the vent hole; and injecting water into the measuring cylinder again to the 100 ml mark; (3) Open the valve and observe whether the water level in the measuring cylinder drops. If the water level drops, it is judged that the sealing is unqualified. If the water level does not drop, it is judged that the sealing is qualified.

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