CN112394021B - Indoor testing arrangement of permeable pavement structure osmotic coefficient - Google Patents
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 230000003204 osmotic effect Effects 0.000 title claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000003860 storage Methods 0.000 claims abstract description 45
- 230000035699 permeability Effects 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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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
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Abstract
The invention discloses an indoor permeable pavement structure permeability coefficient testing device, and relates to the field of permeable pavement overall structure permeability coefficient measurement for sponge cities. Indoor testing arrangement of permeable pavement structure osmotic coefficient mainly by: a seepage cavity, a flow storage cavity, an overflow port and a water collector; an overflow groove is arranged at the upper edge of the seepage cavity, and a limiting net is arranged inside the overflow groove; the flow storage cavity is communicated with the seepage cavity through a water passing hole arranged at the bottom, and a water baffle is arranged between the top and the seepage cavity for isolation; the outer side wall of the flow storage cavity is provided with an overflow port, and the overflow port consists of an overflow window, a rubber sealing ring, an overflow water-blocking plate, an overflow notch, a water-blocking plate sliding groove and a drainage platform; the water collector is used for containing seepage water. Adopt indoor testing arrangement of permeable pavement structure osmotic coefficient can test the measurement to permeable pavement overall structure's water permeability indoor, quantizes the permeable pavement overall structure's for the sponge city effect of permeating water.
Description
Technical Field
The invention relates to the technical field of sponge cities, in particular to the technical field of measuring the permeability coefficient of the whole structure of a permeable pavement in a sponge city, and particularly relates to an indoor testing device for the permeability coefficient of the structure of the permeable pavement.
Background
The permeable pavement is an important measure for sponge city construction, and the technical key for practicing sponge city construction and perfecting the permeable performance evaluation mode of the integral structure of the permeable pavement is how to quantitatively detect the permeable effect of the integral structure of the permeable pavement indoors.
The existing permeable pavement integral structure water permeability detection usually refers to the existing compact asphalt pavement water permeability field test method, and belongs to an in-situ detection method. However, in the in-situ detection method, no enclosure structure is arranged inside the test point pavement structure in the test process, so that the phenomenon that water flows diffuse and seep around through a surface layer or a base layer in the seepage process can occur, and the test result cannot accurately reflect the vertical seepage performance of the integral structure of the test point permeable pavement. Meanwhile, the traditional indoor detection method of the permeable material for the permeable pavement is only limited to the permeability test of a single permeable material, the test of the vertical permeability of the whole permeable pavement structure cannot be realized, the test result of the material with strong permeability is inaccurate, the permeability of the whole permeable pavement structure is directly related to the permeability of the pavement after the permeable pavement structure is paved, and therefore a relatively accurate and comprehensive device is needed for testing the permeable effect of the permeable pavement.
Therefore, aiming at the problems, the invention provides an indoor testing device convenient for measuring the permeability of the whole structure of the permeable pavement, which is used for measuring the permeability coefficient of the whole structure of the permeable pavement in a sponge city.
Disclosure of Invention
The invention aims to provide an indoor testing device for the permeability coefficient of a permeable pavement structure, which is used for measuring the permeability of the integral structure of a permeable pavement in a sponge city.
In order to realize the purpose, the indoor testing device for the permeability coefficient of the permeable pavement structure comprises the following structure.
Indoor testing arrangement of permeable pavement structure osmotic coefficient mainly by: a seepage cavity, a flow storage cavity, an overflow port and a water collector; the seepage chamber is used for filling a permeable pavement integral structure layer indoors and simulating the seepage working condition of the permeable pavement integral structure under the condition of rainwater submergence; an overflow groove is arranged at the upper edge of the seepage cavity, and a limiting net is arranged inside the seepage cavity; the water storage cavity is used for temporarily storing the seepage water passing through the integral structure of the permeable pavement, the water storage cavity is communicated with the seepage cavity through a water passing hole formed in the bottoms of the water storage cavity and the seepage cavity, and the top of the water storage cavity is isolated from the seepage cavity by a water baffle; the outer side wall of the flow storage cavity is provided with an overflow port, and the overflow port consists of an overflow window, a rubber sealing ring, an overflow water-blocking plate, an overflow notch, a water-blocking plate sliding groove and a drainage platform; the water collector is used for containing the water quantity which flows through the permeable pavement structure within a set time and measuring the volume of the permeable pavement structure.
Furthermore, the seepage cavity is made of a transparent organic glass plate and is used for filling a permeable pavement integral structure layer indoors and simulating the seepage working condition of the permeable pavement integral structure under the condition of rainwater submergence; the transparent organic glass plate structure is convenient for observing the flow track of water flow in the seepage cavity and the change state of each structural layer of the permeable pavement along with the water seepage process in real time; the upper edge of the seepage cavity is provided with an overflow groove, and a limiting net is arranged inside the overflow groove.
Furthermore, an overflow groove is arranged on the outer side wall of the seepage cavity 2cm below the top surface, so that the water flow in the seepage cavity keeps constant water head height; the cross section of the overflow groove is in an outwards inclined wedge shape, so that the influence of a water choking effect on the water head height in the seepage cavity when water flows overflow can be conveniently eliminated.
Furthermore, a limiting net arranged in the seepage cavity is woven into a square mesh frame with the aperture of 10 mm by using a phi 6mm steel bar; spacing net is horizontal in the seepage flow intracavity apart from bottom 15cm eminence for support permeable pavement overall structure model, the seepage water of being convenient for simultaneously passes through.
Further, the flow storage cavity is made of a transparent organic glass plate and is used for temporarily storing water penetrating through the whole structure of the permeable pavement; the flow storage cavity and the seepage cavity are communicated through a water passing hole arranged at the bottom of the flow storage cavity and the seepage cavity, and the water passing hole is 60 cm in size and 10 cm in height; a water baffle is arranged between the top of the flow storage cavity and the seepage cavity for isolation; an overflow port is arranged on the outer side wall of the flow storage cavity.
Furthermore, the overflow port comprises an overflow window, a rubber sealing ring, an overflow water-blocking plate, an overflow notch, a water-blocking plate sliding groove and a drainage platform.
Further, the overflow window is positioned on the outer side wall of the flow storage cavity; the rubber sealing ring is positioned on the outer side edge of the overflow window to prevent water from flowing out from the space between the outer side wall of the flow storage cavity and the overflow water-blocking plate; the overflow water-blocking plate is arranged in the water-blocking plate sliding groove and can slide along the vertical direction, the height of a water head in the flow storage cavity is adjusted, and the function of adjusting the water head difference between the seepage cavity and the flow storage cavity is achieved; the upper end of the overflow water-blocking plate is provided with an outward-inclined wedge-shaped overflow notch, so that the influence on a fluid head of the flow storage cavity due to the effect of stagnant water when water flows over is reduced; the outer edge of the overflow notch is provided with a drainage platform for guiding seepage water to flow to the water collector; the water-blocking plate sliding groove is located in the L-shaped clamping grooves on two sides of the overflow port, and threaded round holes which are longitudinally arranged at intervals of 5cm are formed in the outer side wall of the water-blocking plate sliding groove and used for fixing the position of the overflow water-blocking plate according to needs.
Furthermore, the water collector is made of a graduated measuring cylinder and is used for containing seepage water flow and measuring the volume of the seepage water flow.
The embodiment of the invention brings the following beneficial effects.
The invention can realize the test of the longitudinal permeability of the whole permeable pavement structure layer, and can conveniently and clearly observe the water flow track in the seepage cavity and the change state of each structure layer of the permeable pavement along with the water seepage process in real time.
The overflow groove is in a wedge shape, so that the influence of a water blocking effect on the height of a water head in the seepage cavity when flowing water overflows can be eliminated conveniently, and the water flow in the seepage cavity keeps constant height of the water head; the limiting net is a square mesh frame with the aperture of 10 mm woven by steel bars with the diameter of 6mm, so that the permeable pavement integral structure layer model is conveniently supported, and the obstruction to seepage liquid is reduced.
The overflow water-blocking plate is fixed in the water-blocking plate sliding groove through the water-blocking plate limiting hole, so that the stepless adjustment of the water head difference between the seepage cavity and the flow storage cavity can be realized, and the water-blocking device can be more widely applied to the permeability coefficient test of various water-permeable structures and materials; the overflow water-blocking plate and the flow storage cavity are reinforced and compressed through screws in the water-blocking plate limiting holes, so that the sealing property of the rubber ring is improved, and water is prevented from flowing out from the space between the outer side wall of the flow storage cavity and the overflow water-blocking plate; the drainage platform adopts a structure with a wide inner part and a narrow outer part, so that the fluid flowing out of the overflow notch can be conveniently guided to be gathered and flow to the water collector.
The invention is further described with reference to the following figures and detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description. Or may be learned by practice of the invention.
Drawings
The invention is described in further detail below with reference to the figures and the detailed description.
FIG. 1 is a split three-dimensional schematic view of an indoor testing device for permeability coefficient of a permeable pavement structure;
FIG. 2 is a schematic view of a seepage chamber of an indoor testing device for the permeability coefficient of a permeable pavement structure;
FIG. 3 is a schematic view of a flow storage cavity of an indoor testing device for permeability coefficient of a permeable pavement structure;
FIG. 4 is a schematic view of a water baffle of the indoor testing device for permeability coefficient of a permeable pavement structure;
FIG. 5 is a schematic side view of an indoor permeable pavement structure permeability coefficient testing device;
FIG. 6 is a schematic top view of an indoor testing device for permeability coefficient of a permeable pavement structure;
FIG. 7 is a schematic cross-sectional view of an indoor testing device A-A for permeability coefficient of a permeable pavement structure;
FIG. 8 is a schematic cross-sectional view of a permeable pavement structure permeability coefficient indoor testing device B-B;
FIG. 9 is a schematic cross-sectional view of a permeable pavement structure permeability coefficient indoor testing device C-C.
In the figure: 1-seepage cavity, 2-overflow groove, 3-water baffle, 4-limiting net, 5-water passing opening, 6-flow storage cavity, 7-overflow window, 8-overflow water baffle, 9-overflow notch, 10-rubber ring, 11-water baffle sliding groove, 12-drainage platform, 13-water collector and 14-water baffle limiting hole.
Detailed Description
The invention will be described more fully hereinafter with reference to the accompanying drawings. Those skilled in the art will be able to implement the invention based on these teachings. Before the present invention is described in detail with reference to the accompanying drawings, it is to be noted that:
the technical solutions and features provided in the present invention in the respective sections including the following description may be combined with each other without conflict.
Moreover, the embodiments of the invention described in the following description are generally only some embodiments of the invention, rather than all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
With respect to terms and units in the present invention. The term "comprises" and any variations thereof in the description and claims of this invention and the related sections are intended to cover non-exclusive inclusions.
As shown in fig. 1, 2, 3 and 6, the permeable pavement structure testing device comprises a seepage cavity 1, an overflow groove 2, a water baffle 3, a limiting net 4, a water passing opening 5, a flow storage cavity 6, an overflow window 7, an overflow water baffle 8, an overflow notch 9, a rubber ring 10, a water baffle sliding groove 11, a drainage platform 12, a water collector 13 and a water baffle limiting hole 14.
As shown in fig. 2 and 5, the overflow groove 2 is arranged at the position 2cm lower than the top surface outside the seepage cavity 1; the water baffle 3 is arranged between the seepage cavity 1 and the flow storage cavity 6 and is higher than the seepage cavity 1 and the flow storage cavity 6 by a certain height; the limiting net 4 is arranged at a certain height in the seepage cavity 1; as shown in fig. 3 and 6, the overflow window 7 is arranged outside the flow storage cavity 6; in the embodiment, the opening of the overflow window 7 is 40cm long, the drainage platform 12 is connected with the overflow notch 9, and the water collector 13 is placed below the drainage platform 12; as shown in FIG. 4, the water passing opening 5 is positioned at the bottom of the water baffle 3, and the height of the water passing opening 5 is 15 cm.
The specific implementation is as follows.
Before the permeable pavement structure permeability coefficient test is carried out, the height of a limiting net 4 is preferentially determined, permeable pavement base material and permeable pavement surface layer material are sequentially arranged on the limiting net 4 according to the permeable pavement structure, the highest position height of all the materials is kept below an overflow groove 2, in the embodiment, the base material is open graded broken stone, the surface layer material is structural permeable concrete, in the embodiment, the structure in a seepage cavity 1 is sequentially provided with the limiting net 4, the open graded broken stone base layer and the permeable concrete sample surface layer from bottom to top, after the materials are sequentially laid, an overflow water baffle plate 8 is arranged at the highest position to enable an overflow gap 9 to be flush with the top surface of a flow storage cavity 6, clear water is injected into the seepage cavity 1 and does not pass through the overflow groove 2 to enable the materials in the seepage cavity 1 to be fully soaked, after the materials are soaked for a certain period of time, the height of the overflow gap 9 is determined according to the water permeability of the arranged materials, as shown in fig. 7, 8 and 9, if the material permeability coefficient is large and the water permeability is strong, the seepage chamber 1 and the storage chamber 6 should adopt a small water head difference, the overflow water-blocking plate 8 is moved downwards, the overflow water-blocking plate 8 is fixed by a bolt through the water-blocking plate limiting hole 14 and is tightly attached to the outer wall of the storage chamber 6, the rubber ring 10 is compressed to ensure that no water seepage occurs between the storage chamber 6 and the overflow water-blocking plate 8, clear water is continuously injected into the seepage chamber 1, the water head height in the seepage chamber 1 is the height of the overflow tank 2, when the water flow in the overflow notch 9 is observed to be stable, the seepage water flowing out of the drainage platform 12 is contained by the water collector 13, and the timing is started at the same time, the timing is stopped after a period of time, the volume of the seepage water in the water collector 13 is measured, at this time, according to the fixed water head difference delta h between the overflow tank 2 and the overflow notch 9, the seepage chamber 1 simulates the cross-section area a permeable pavement structure a, and (4) calculating the integral permeability coefficient of the set pavement structure by the seepage time t and the seepage volume V in the time period.
Claims (8)
1. Indoor testing arrangement of permeable pavement structure osmotic coefficient, its characterized in that mainly by: a seepage cavity, a flow storage cavity, an overflow port and a water collector; an overflow groove is arranged at the upper edge of the seepage cavity, and a limiting net is arranged inside the seepage cavity; the water storage cavity is communicated with the seepage cavity through a water passing hole formed in the bottoms of the water storage cavity and the seepage cavity, and a water baffle is arranged between the top of the water storage cavity and the seepage cavity for isolation; the outer side wall of the flow storage cavity is provided with an overflow port, and the overflow port consists of an overflow window, a rubber sealing ring, an overflow water-blocking plate, an overflow notch, a water-blocking plate sliding groove and a drainage platform; the overflow window is positioned on the outer side wall of the flow storage cavity; the rubber sealing ring is positioned on the outer side edge of the overflow window; the overflow water-blocking plate is arranged in the water-blocking plate sliding groove; the upper end of the overflow water-blocking plate is provided with a wedge-shaped overflow notch which inclines outwards; a drainage table is arranged on the outer side edge of the overflow notch; the water collector is arranged below the overflow port.
2. The indoor permeable pavement structure permeability coefficient testing device of claim 1, wherein the seepage chamber is made of a transparent organic glass plate material; the length of the inner diameter of the seepage cavity is 70 cm, the width of the seepage cavity is 20 cm, and the height of the seepage cavity is 120 cm; the overflow groove is arranged at the position, 2cm below the top surface, of the outer side wall of the seepage cavity, and the width of the overflow groove is 15 cm; the limiting net is transversely arranged at the position, which is 15cm high away from the bottom, in the seepage cavity.
3. The indoor permeable pavement structure permeability coefficient testing device of claim 2, wherein the cross section of the overflow groove is in an outward-inclined wedge shape.
4. The indoor permeable pavement structure permeability coefficient testing device of claim 2, wherein the limiting net arranged in the seepage chamber is a square mesh frame with a 10 mm aperture woven by a phi 6mm steel bar.
5. The indoor permeable pavement structure permeability coefficient testing device of claim 1, wherein the flow storage cavity is made of a transparent organic glass plate; the length of the inner diameter of the flow storage cavity is 70 cm, the width of the flow storage cavity is 10 cm, and the height of the flow storage cavity is 120 cm; the flow storage cavity is communicated with the seepage cavity through a water passing hole formed in the bottom of the flow storage cavity and the bottom of the seepage cavity, the size of the water passing hole is 60 cm, and the height of the water passing hole is 10 cm.
6. The indoor permeable pavement structure permeability coefficient testing device of claim 1, wherein the overflow window is positioned on the outer side wall of the flow storage cavity; the rubber sealing ring is located on the outer side edge of the overflow window and is tightly attached to the overflow window.
7. The indoor permeable pavement structure permeability coefficient testing device of claim 1, wherein the overflow water blocking plate is installed in a water blocking plate sliding groove; the upper end of the overflow water-blocking plate is provided with a wedge-shaped overflow notch which inclines outwards; the width of the overflow notch is 15 cm; a drainage table is arranged on the outer side edge of the overflow notch; the water-blocking plate sliding groove is an L-shaped clamping groove located on two sides of the overflow port, and threaded circular holes which are longitudinally arranged at intervals of 5cm are formed in the outer side wall of the water-blocking plate sliding groove.
8. The indoor permeable pavement structure permeability coefficient testing device of claim 1, wherein the water collector is made of a transparent graduated measuring cylinder; the inner diameter of the water collector is larger than the length of the overflow port.
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| CN115598038B (en) * | 2022-12-14 | 2023-03-28 | 叙镇铁路有限责任公司 | Indoor test determination device for blockage recovery capability of modified permeable pavement |
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