CN210322721U - Water-permeable paving material blocking rule testing device - Google Patents
Water-permeable paving material blocking rule testing device Download PDFInfo
- Publication number
- CN210322721U CN210322721U CN201921176006.9U CN201921176006U CN210322721U CN 210322721 U CN210322721 U CN 210322721U CN 201921176006 U CN201921176006 U CN 201921176006U CN 210322721 U CN210322721 U CN 210322721U
- Authority
- CN
- China
- Prior art keywords
- water
- sleeve
- communicated
- upper sleeve
- water outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a plugging rule testing device for permeable pavement materials, wherein an upper sleeve is communicated above a lower sleeve, and a rubber sleeve is arranged in the upper sleeve, wherein a permeable pavement test piece to be tested is positioned in the rubber sleeve, a first test port is arranged on the side wall of the upper sleeve, a second test port is arranged on the side wall of the lower sleeve, and the first test port and the second test port are communicated with a pressure measuring pipe; an inclined plate is arranged in the lower sleeve, a water outlet is formed in the side wall of the lower sleeve, the second testing port is located above the inclined plate, the water outlet is located at the lowest end of the inclined plate, one end of a water outlet pipe is communicated with the water outlet, the other end of the water outlet pipe is located above a filter sieve, and the filter sieve is fixed at the position of an opening in the top of the water collecting tank; the rainfall simulation system is communicated with the inlet of the spray head through the flow velocity meter, and the device can test the decay condition of the permeability of the permeable material under different blocking substances and different rainfall conditions.
Description
Technical Field
The utility model belongs to the sponge city field of mating formation of permeating water relates to a material of mating formation of permeating water blocks up rule testing arrangement.
Background
The sponge city is a new idea provided for solving the serious water environment problem in the rapid urbanization process of China, and the permeable pavement has good permeability due to the special pore structure, is an important measure for the construction of the sponge city, and is widely applied. The permeable pavement mainly comprises a permeable asphalt pavement, a permeable cement concrete pavement and a permeable brick pavement, and can effectively reduce or eliminate urban rainstorm flood disasters. Therefore, the excellent permeability of the permeable pavement plays a key role in reducing peak runoff and controlling peak staggering effect.
However, the permeable pavement is widely applied to urban roads, and is often blocked by sand, dust and foreign matters in the road environment due to large pores, so that the function of the permeable pavement is difficult to be exerted, the permeability of the permeable pavement is continuously attenuated, the service life of the permeable pavement is shortened, and the possibility of urban flood and freeze-thaw disasters is increased.
Due to the fact that the different permeable pavement structures are different in blocking conditions and environmental conditions, the change of the permeability attenuation rule of the permeable pavement is complex. At present, when the traditional permeable pavement blockage test device measures the attenuation change of the permeability, the permeability coefficient of the original pavement material is measured, and the decay condition of the permeability of the permeable material under different blocking substances and different rainfall conditions is not researched.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a material of mating formation that permeates water blocks up law testing arrangement, the device can test the permeability decay condition of the material that permeates water under different jam material and different rainfall conditions.
In order to achieve the purpose, the device for testing the blocking rule of the permeable paving material comprises an upper sleeve, a lower sleeve, a pressure measuring pipe, a filter sieve, a water collecting tank, a rainfall simulation system, a spray head, a current meter and a feeding system;
the upper sleeve is communicated with the upper part of the lower sleeve, a rubber sleeve is arranged in the upper sleeve, a to-be-tested permeable pavement test piece is positioned in the rubber sleeve, a first test port is formed in the side wall of the upper sleeve, a second test port is formed in the side wall of the lower sleeve, and the first test port and the second test port are communicated with the pressure measuring pipe;
an inclined plate is arranged in the lower sleeve, a water outlet is formed in the side wall of the lower sleeve, the second testing port is located above the inclined plate, the water outlet is located at the lowest end of the inclined plate, one end of a water outlet pipe is communicated with the water outlet, the other end of the water outlet pipe is located above a filter sieve, and the filter sieve is fixed at the position of an opening in the top of the water collecting tank;
the rainfall simulation system is communicated with the inlet of the spray head through the flow velocity meter;
when the porosity of the permeable pavement test piece to be tested is measured, the spray head is positioned right above the upper sleeve;
when the simulation plug sand granule is experimental, throw material system and shower nozzle and be located the top of upper sleeve respectively in proper order.
The feeding system comprises a feeding hopper, a supporting frame and a vibrating screen;
feed hopper is fixed in the top of support frame, is provided with the live-rollers in the feed hopper, and the stirring leaf has been arranged to the periphery of live-rollers, and the shale shaker is located the position department of feed hopper bottom export, and the shale shaker is connected with vibrating motor.
The rainfall simulation system comprises a water source, a submersible pump and a water temperature meter for detecting the water temperature in the water source, wherein the submersible pump is positioned in the water source, and the outlet of the submersible pump is communicated with the spray head through a flow velocity meter.
A plurality of overflow ports are axially formed in the side surface of the top of the upper sleeve;
the pressure measuring pipe is communicated with the first test port and the second test port through the pressure water pipe.
An inner sleeve is arranged in the upper sleeve, wherein the rubber sleeve is positioned in the inner sleeve.
The upper sleeve is connected with the lower sleeve through a connecting flange.
The water collecting tank is provided with a scale used for measuring the water level in the water collecting tank.
The utility model discloses following beneficial effect has:
permeable pavement material blocks up law testing arrangement when concrete operation, the rainfall simulation system is linked together through the entry of velocity of flow meter and shower nozzle, cooperate through velocity of flow meter and rainfall simulation system, in order to simulate different rainfall conditions, throw the material system simultaneously and will predetermine the even upper portion of scattering the test piece of permeable pavement of awaiting measuring of plug sand granule of quality ms, through changing plug sand granule, in order to simulate different plug material conditions, then utilize the reading of pressure-measuring pipe, the water level in the header, the test is permeable pavement the quality of test piece surface not got into the sand in hole and is filtered the quality calculation of sand on the sieve of permeable pavement test piece that awaits measuring at T ℃ of osmotic coefficient k1And the sand mass m blocked in the pores of the permeable pavement test piece to be testedcThe purpose of testing the permeability decay condition of the permeable material under different blocking substances and different rainfall conditions is achieved, the structure is stable and reliable, the operation steps are simple, the popularization is easy, and a foundation is laid for researching the blocking mechanism of the permeable pavement.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a permeability coefficient measuring system.
Wherein, 1 is a support frame, 2 is a feeding hopper, 3 is a rotating roller, 4 is a stirring blade, 5 is a vibrating screen, 6 is a vibrating motor, 71 is an upper sleeve, 72 is a lower sleeve, 8 is an overflow port, 9 is a pressure measuring pipe, 10 is a pressure water pipe, 11 is a rubber sleeve, 12 is an inner sleeve, 13 is a permeable pavement test piece to be tested, 14 is a water outlet, 15 is a filter screen, 16 is a scale, 17 is a water collecting tank, 18 is a connecting flange, 19 is an inclined plate, 20 is a spray head, 21 is a flow velocity meter, 22 is a submersible pump, 23 is a water source, and 24 is a water temperature meter.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1 and 2, the device for testing the blocking law of permeable paving materials of the present invention comprises an upper sleeve 71, a lower sleeve 72, a pressure measuring pipe 9, a filter sieve 15, a water collecting tank 17, a rainfall simulation system, a spray head 20, a flow rate meter 21 and a feeding system; the upper sleeve 71 is communicated above the lower sleeve 72, the rubber sleeve 11 is arranged in the upper sleeve 71, the to-be-tested permeable pavement test piece 13 is positioned in the rubber sleeve 11, a first test port is arranged on the side wall of the upper sleeve 71, a second test port is arranged on the side wall of the lower sleeve 72, and the first test port and the second test port are communicated with the pressure measuring pipe 9; an inclined plate 19 is arranged in the lower sleeve 72, a water outlet 14 is formed in the side wall of the lower sleeve 72, the second test port is located above the inclined plate 19, the water outlet 14 is located at the lowest end of the inclined plate 19, one end of a water outlet pipe is communicated with the water outlet 14, the other end of the water outlet pipe is located above the filter sieve 15, and the filter sieve 15 is fixed at the opening position of the top of the water collecting tank 17; the rainfall simulation system is communicated with the inlet of the spray head 20 through the flow meter 21;
the feeding system comprises a feeding hopper 2, a support frame 1 and a vibrating screen 5; feed hopper 2 is fixed in the top of support frame 1, is provided with live-rollers 3 in the feed hopper 2, and stirring leaf 4 has been arranged to the periphery of live-rollers 3, and shale shaker 5 is located the position department of 2 bottom exports of feed hopper, and shale shaker 5 is connected with vibrating motor 6.
The rainfall simulation system comprises a water source 23, a submersible pump 22 and a water temperature meter 24 for detecting the water temperature in the water source 23, wherein the submersible pump 22 is positioned in the water source 23, and the outlet of the submersible pump 22 is communicated with a spray head 20 through a flow velocity meter 21.
The side surface of the top of the upper sleeve 71 is provided with a plurality of overflow ports 8 along the axial direction; the pressure measuring pipe 9 is communicated with the first test port and the second test port through a pressure water pipe 10; an inner sleeve 12 is arranged in the upper sleeve 71, wherein the rubber sleeve 11 is positioned in the inner sleeve 12; the upper sleeve 71 is connected with the lower sleeve 72 through a connecting flange 18; the water collection tank 17 is provided with a scale 16 for measuring the water level in the water collection tank 17.
The stirring blades 4 and the rotating roller 3 are fixed through bolts, and sand particles directly fall to the upper part of a permeable pavement test piece 13 to be tested after passing through the vibrating screen 5; the water in the water source 23 is tap water in a laboratory, the rainfall simulation system can set different flow rates to simulate different rainfall intensity conditions, the water temperature under the test conditions is measured by the water temperature meter 24, the number of the overflow ports 8 is three, and the three overflow ports 8 are different in height so as to control the height of the water head.
The forming mode of the permeable pavement test piece 13 to be tested is preferably static compaction forming and low-frequency vibration forming, the wall protecting material is preferably vaseline, and the support frames 1 of the feeding system and the rainfall simulation system are made of aluminum alloy materials so as to ensure economy and stability; the upper sleeve 71 and the lower sleeve 72 are made of organic glass acrylic, PVC pipes or UPVC pipes, and the inner diameters of the upper sleeve 71 and the lower sleeve 72 are generally selected to be 10-15 mm.
Example one
The upper end surface and the lower end surface of the to-be-measured permeable pavement test piece 13 are cut to be flat, the height h of the to-be-measured permeable pavement test piece 13 is measured, and the porosity n of the to-be-measured permeable pavement test piece 13 is measured by adopting a volume-volume methodeComprises the following steps:
wherein m is1The mass of the test piece 13 to be measured in water after soaking for 24 hours is measured, v is the volume of the test piece 13 to be measured by a volume method, rhowIs the density of water.
Example two
Measuring the diameter of the to-be-measured permeable pavement test piece 13, and calculating the cross section area A of the to-be-measured permeable pavement test piece 13 according to the diameter of the to-be-measured permeable pavement test piece 13;
soaking a to-be-detected permeable pavement test piece 13 in a NaCl solution, taking out the to-be-detected permeable pavement test piece, wiping the surface of the to-be-detected permeable pavement test piece 13, coating vaseline on the side surface of the to-be-detected permeable pavement test piece 13, wrapping the to-be-detected permeable pavement test piece 13 through a rubber sleeve 11, then placing the to-be-detected permeable pavement test piece into an inner sleeve 12, communicating an upper sleeve 71 with a lower sleeve 72, and finally placing the inner sleeve 12 into the upper sleeve 71;
opening the rainfall simulation system, observing the reading of the flow meter 21, injecting water into the inner sleeve 12 until the upper part of the upper sleeve 71 begins to overflow, and recording the reading h of the current piezometer tube 91And simultaneously recording the water level Q of the water in the water collection tank 171Observing the reading of the pressure measuring pipe 9, and recording the reading h of the current pressure measuring pipe 9 when the reading of the pressure measuring pipe 9 is stable2And the water level Q in the water collection tank 172Calculating a hydraulic gradient J;
wherein h iswThe head loss after flowing through the permeable pavement test piece 13 to be tested, and h is the height of the permeable pavement test piece 13 to be tested;
calculating the permeability coefficient k of the permeable pavement test piece 13 to be tested at T ℃ by utilizing Darcy's lawTComprises the following steps:
wherein, Q is the flow rate corresponding to the steady upper and lower surface pressure values of the permeable pavement test piece 13 to be tested.
EXAMPLE III
Moving the feeding system to the position right above the upper sleeve 71, starting the feeding system, and enabling the preset mass msUniformly spreading the sand particles of the blocking object on the upper part of the permeable pavement test piece 13 to be tested, and then moving away the feeding system;
aligning the spray head 20 with the water inlet at the top of the upper sleeve 71, opening the rainfall simulation system, observing the reading of the flow meter 21, injecting water into the inner sleeve 12 until the upper part of the upper sleeve 71 begins to overflow, and recording the reading h of the current piezometer tube 911And simultaneously recording the water level Q of the water in the water collection tank 1711And the reading of the pressure measuring tube 9 is observed,when the reading of the piezometric tube 9 is stable, recording the reading h of the current piezometric tube 912And the water level Q in the water collection tank 1712Calculating the hydraulic gradient J1；
Wherein h iswThe head loss after flowing through the permeable pavement test piece 13 to be tested, and h is the height of the permeable pavement test piece 13 to be tested;
calculating the permeability coefficient k of the permeable pavement test piece 13 to be tested at T ℃ by utilizing Darcy's law1Comprises the following steps:
wherein Q is the flow corresponding to the steady upper and lower surface pressure values of the permeable pavement test piece 13 to be tested, and A is the cross section area of the permeable pavement test piece 13 to be tested;
closing the rainfall simulation system, collecting the sand which does not enter the pores on the upper surface of the permeable pavement test piece 13 to be tested and the sand precipitated on the filter screen 15, drying the sand respectively and weighing the sand and the dried sand to obtain the weight of the sand and the weight of the sand which are m respectively1And m2And calculating the sand mass m blocked in the pores of the permeable pavement test piece 13 to be testedcComprises the following steps:
mc＝ms-m1-m2。
in actual operation, only one of the following test parameters is changed, and the influence of the corresponding parameter on the anti-blocking capacity of the permeable pavement test piece is researched, wherein the test parameters comprise the porosity of the test piece, the grain size and grading, the rainfall simulation intensity and the free water height of the upper surface of the test piece.
Claims (7)
1. The blockage law testing device for the permeable paving material is characterized by comprising an upper sleeve (71), a lower sleeve (72), a pressure measuring pipe (9), a filter screen (15), a water collecting tank (17), a rainfall simulation system, a spray head (20), a flow velocity meter (21) and a feeding system;
the upper sleeve (71) is communicated above the lower sleeve (72), a rubber sleeve (11) is arranged in the upper sleeve (71), a to-be-tested permeable pavement test piece (13) is positioned in the rubber sleeve (11), a first test port is formed in the side wall of the upper sleeve (71), a second test port is formed in the side wall of the lower sleeve (72), and the first test port and the second test port are communicated with the pressure measuring pipe (9);
an inclined plate (19) is arranged in the lower sleeve (72), a water outlet (14) is formed in the side wall of the lower sleeve (72), the second testing port is located above the inclined plate (19), the water outlet (14) is located at the position of the lowest end of the inclined plate (19), one end of the water outlet pipe is communicated with the water outlet (14), the other end of the water outlet pipe is located above the filter sieve (15), and the filter sieve (15) is fixed at the position of an opening in the top of the water collecting tank (17);
the rainfall simulation system is communicated with an inlet of the spray head (20) through a flow velocity meter (21);
when the porosity of the permeable pavement test piece (13) to be tested is measured, the spray head (20) is positioned right above the upper sleeve (71);
when a blockage sand particle test is simulated, the feeding system and the spray head (20) are sequentially and respectively positioned right above the upper sleeve (71).
2. The water permeable paving material blockage law testing device according to claim 1, wherein the feeding system comprises a feeding hopper (2), a support frame (1) and a vibrating screen (5);
feed hopper (2) are fixed in the top of support frame (1), are provided with live-rollers (3) in feed hopper (2), and stirring leaf (4) have been arranged to the periphery of live-rollers (3), and shale shaker (5) are located the position department of feed hopper (2) bottom export, and shale shaker (5) are connected with vibrating motor (6).
3. The water permeable paving material blockage law testing device according to claim 1, wherein the rainfall simulation system comprises a water source (23), a submersible pump (22) and a water temperature meter (24) for detecting the water temperature in the water source (23), wherein the submersible pump (22) is positioned in the water source (23), and the outlet of the submersible pump (22) is communicated with the spray head (20) through a flow rate meter (21).
4. The water permeable paving material blockage law testing device according to claim 1, wherein the side surface of the top of the upper sleeve (71) is provided with a plurality of overflow ports (8) along the axial direction;
the pressure measuring pipe (9) is communicated with the first test port and the second test port through a pressure water pipe (10).
5. The permeable pavement plugging rule testing device according to claim 1, characterized in that an inner sleeve (12) is arranged in the upper sleeve (71), wherein the rubber sleeve (11) is positioned in the inner sleeve (12).
6. The plugging law testing device of the permeable pavement material according to claim 1, characterized in that the upper sleeve (71) is connected with the lower sleeve (72) through a connecting flange (18).
7. The water permeable paving material blockage law testing device according to claim 1, wherein the water collecting tank (17) is provided with a scale (16) for measuring the water level in the water collecting tank (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921176006.9U CN210322721U (en) | 2019-07-24 | 2019-07-24 | Water-permeable paving material blocking rule testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921176006.9U CN210322721U (en) | 2019-07-24 | 2019-07-24 | Water-permeable paving material blocking rule testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210322721U true CN210322721U (en) | 2020-04-14 |
Family
ID=70125566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921176006.9U Active CN210322721U (en) | 2019-07-24 | 2019-07-24 | Water-permeable paving material blocking rule testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210322721U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320147A (en) * | 2019-07-24 | 2019-10-11 | 长安大学 | A kind of sponge urban water-through is mated formation permeance property attenuation law test device and method |
| CN112684157A (en) * | 2020-11-30 | 2021-04-20 | 重庆大学 | Asphalt pavement adhesive layer performance testing device |
| CN115598038A (en) * | 2022-12-14 | 2023-01-13 | 叙镇铁路有限责任公司（Cn） | Indoor test determination device for blockage recovery capability of modified permeable pavement |
| CN115855769A (en) * | 2022-11-29 | 2023-03-28 | 水利部交通运输部国家能源局南京水利科学研究院 | Testing device for simulating concrete blocking mechanism and using method thereof |
| CN117782941A (en) * | 2024-02-23 | 2024-03-29 | 山东省地矿工程勘察院(山东省地质矿产勘查开发局八〇一水文地质工程地质大队) | Medium permeability coefficient test device |
-
2019
- 2019-07-24 CN CN201921176006.9U patent/CN210322721U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320147A (en) * | 2019-07-24 | 2019-10-11 | 长安大学 | A kind of sponge urban water-through is mated formation permeance property attenuation law test device and method |
| CN112684157A (en) * | 2020-11-30 | 2021-04-20 | 重庆大学 | Asphalt pavement adhesive layer performance testing device |
| CN115855769A (en) * | 2022-11-29 | 2023-03-28 | 水利部交通运输部国家能源局南京水利科学研究院 | Testing device for simulating concrete blocking mechanism and using method thereof |
| CN115598038A (en) * | 2022-12-14 | 2023-01-13 | 叙镇铁路有限责任公司（Cn） | Indoor test determination device for blockage recovery capability of modified permeable pavement |
| 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 |
| CN117782941A (en) * | 2024-02-23 | 2024-03-29 | 山东省地矿工程勘察院(山东省地质矿产勘查开发局八〇一水文地质工程地质大队) | Medium permeability coefficient test device |
| CN117782941B (en) * | 2024-02-23 | 2024-05-28 | 山东省地矿工程勘察院(山东省地质矿产勘查开发局八〇一水文地质工程地质大队) | Medium permeability coefficient test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210322721U (en) | Water-permeable paving material blocking rule testing device | |
| CN110320147A (en) | A kind of sponge urban water-through is mated formation permeance property attenuation law test device and method | |
| CN103439236B (en) | Permeable concrete road surface blocking test analogue means and method | |
| CN208999271U (en) | A kind of test device of pervious concrete blocking test infiltration coefficient | |
| CN110940625A (en) | Device and method for simulating permeable concrete blocking mechanism under real rainfall condition | |
| CN207147938U (en) | A kind of experimental rig for simulating permeable compound plugging performance | |
| CN106768840B (en) | Device and method for simulating sand carrying of running water under seepage-vibration effect | |
| US20220205971A1 (en) | Integrated test device and method for filling karst cave deposition and tunnel intermittent water and mud inrush disasters | |
| CN101813605B (en) | Permeable environment simulator experimental device and method suitable for permeable brick | |
| CN208043608U (en) | A kind of novel water permeable concrete permeable coefficient testing device | |
| CN111337650A (en) | Multifunctional test device for researching underground engineering soil body seepage failure mechanism | |
| CN213986117U (en) | Device that pervious concrete road surface blockked up under different rainfall of simulation and runoff circumstances | |
| CN112834375B (en) | Soil and stone water tank erosion test device considering seepage | |
| CN109060624B (en) | Method for researching seepage-discharging effect of seepage-discharging pipe and seepage device | |
| CN203414388U (en) | Water-permeable concrete pavement blocking experiment simulation device | |
| CN103439237A (en) | Blocking test device and method for water-permeable concrete pile in piping soil foundation | |
| CN108593518B (en) | Device for testing water permeability and decay performance of water permeable pavement structure and working method thereof | |
| CN113959925A (en) | Ecological water permeable pavement work simulation device and simulation method | |
| CN207557065U (en) | A kind of porous pavement infiltration coefficient in situ detection instrument | |
| CN208520728U (en) | A kind of device of automatic measurement permeable pavement structural behaviour | |
| CN114894655A (en) | Experimental device and method for simulating combined driving of soil particle loss by back-and-forth seepage and dry-wet cycle | |
| CN111024587A (en) | Soil-rock mixture flow potential testing device and method | |
| CN207586097U (en) | A kind of road surface water-permeable brick permeability coefficient tester | |
| CN206920294U (en) | A kind of permeation coefficient of permeable concrete determines device | |
| CN216560181U (en) | Experimental device for simply and conveniently evaluating permeable concrete blocking condition by using water permeability index |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |