CN216051289U - Be used for on-spot permeable pavement to block up test device - Google Patents
Be used for on-spot permeable pavement to block up test device Download PDFInfo
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- CN216051289U CN216051289U CN202122060472.4U CN202122060472U CN216051289U CN 216051289 U CN216051289 U CN 216051289U CN 202122060472 U CN202122060472 U CN 202122060472U CN 216051289 U CN216051289 U CN 216051289U
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Abstract
The utility model discloses a blocking test device for an on-site permeable pavement, which comprises a water injection assembly and a test assembly, wherein the water injection assembly comprises a water injection pipe, the test assembly comprises a measuring cylinder, a water level control assembly and a blocking simulation assembly, and the lower part of the measuring cylinder is pre-buried in the pavement; the water level control assembly comprises a first water level sensor, a second water level sensor and a control valve, the control valve is installed on the water injection pipe, the first water level sensor and the second water level sensor are respectively arranged on the inner wall of the measuring cylinder, the first water level sensor and the second water level sensor are respectively connected with the control valve, the blocking simulation assembly comprises a throwing pipe, a throwing valve, a baffle plate and a baffle plate support, the baffle plate is fixed in the measuring cylinder through the baffle plate support, the throwing valve is installed on the throwing pipe, the throwing pipe is communicated with the measuring cylinder, an outlet of the throwing pipe is located right above the baffle plate, and the water injection pipe is communicated with the throwing pipe. The device simple structure can carry out permeable pavement on-site blocking test, reachs the stopper permeability decay rule that accords with reality.
Description
Technical Field
The utility model relates to the technical field of municipal engineering road maintenance, in particular to a test device for site permeable pavement blockage.
Background
The permeable pavement has good permeability due to the special pore structure, has quick rainwater infiltration capacity, can effectively reduce or eliminate urban flood disasters caused by rainstorm, and is an important content for sponge urban construction. In the actual operation environment, a large amount of potential plug sources generally exist around the permeable pavement, and in rainfall runoff and infiltration processes, the plug sources can enter the permeable pavement structure along with rainwater to fill pores, so that the pores are blocked, the permeability of the permeable pavement is continuously attenuated, and the service life is shortened.
The existing permeable pavement blockage test device is mostly an indoor test device, indoor sample preparation, forming and the like can all influence the internal pore structure of a sample, and further influence the blockage permeability attenuation rule, so that the blockage rule obtained by the indoor test device is deviated from the actual situation.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a test device for field permeable pavement blockage, which has a simple structure and is convenient and fast to operate, and can be used for carrying out a field permeable pavement blockage test to obtain a blockage permeability attenuation rule which is in accordance with the actual situation.
The technical scheme adopted for realizing the above purpose of the utility model is as follows:
a test device for blocking of a field permeable pavement comprises a water injection assembly and a test assembly, wherein the water injection assembly comprises a water injection pipe, the test assembly comprises a measuring cylinder, a water level control assembly and a blocking simulation assembly, the bottom of the measuring cylinder is provided with an opening, and the lower part of the measuring cylinder is embedded in the pavement;
the water level control assembly comprises a first water level sensor, a second water level sensor and a control valve, the control valve is installed on the water injection pipe, the first water level sensor and the second water level sensor are respectively arranged on the inner wall of the measuring cylinder, the first water level sensor and the second water level sensor are respectively connected with the control valve, and the water level sensed by the second water level sensor is lower than the water level sensed by the first water level sensor;
the blockage simulation assembly comprises a throwing pipe, a throwing valve, a baffle and a baffle support, wherein the throwing pipe, the throwing valve, the baffle and the baffle support are used for throwing blockage particles, the baffle is fixed in a measuring cylinder through the baffle support, the baffle is parallel to the road surface, the throwing valve is installed on the throwing pipe, the throwing pipe is communicated with the measuring cylinder, an outlet of the throwing pipe is located right above the baffle, and a water injection pipe is communicated with the throwing pipe.
The water injection assembly further comprises a water storage container, a water pump and a flowmeter, the water storage container is arranged on the road surface, the water pump is installed in the water storage container, one end of the water injection pipe is connected with the water pump, and the flowmeter is installed on the water injection pipe.
The baffle support include brace rod and support ring, the brace rod has many, the baffle is discoid, the baffle is located the support ring, the axis of baffle and support ring is the same, many brace rods along circumferencial direction evenly distributed outside the baffle, the one end and the baffle lateral wall of each brace rod are connected, the other end and the support ring inner wall of each brace rod are connected, be equipped with annular support groove on the test section of thick bamboo inner wall, the lower part of support ring inserts in holding in the palm the groove.
The top of the measuring cylinder is sealed, and the outlet of the throwing pipe is in threaded connection with the center of the top of the measuring cylinder.
The water level difference sensed by the first water level sensor and the second water level sensor is less than 5 mm.
Compared with the prior art, the utility model has the beneficial effects and advantages that:
1. the bottom of the measuring cylinder of the device is synchronously embedded in the road surface construction process, the field blockage test can be carried out, and the test result can accurately reflect the attenuation rule of the permeability of blockage.
2. The lower part of a measuring cylinder of the device is embedded into the pavement for a certain length, so that the vertical downward infiltration of water flow is ensured, and the permeability coefficient of a permeable pavement layer can be accurately measured.
3. The device has set up and has blockked up the simulation subassembly, can put in the jam granule on evenly slowly to the road surface, the condition of simulation on-the-spot road surface jam to measurement result's accuracy and reliability have been ensured.
4. The device has set up water level control assembly, and the water level that can automatic control in the measuring cylinder remains stable.
Drawings
FIG. 1 is a schematic structural diagram of a test device for blocking of a permeable pavement on site.
FIG. 2 is an assembly view of the baffle bracket and baffle.
Fig. 3 is an assembly drawing of the baffle bracket, baffle and measuring cylinder.
The device comprises a measuring cylinder 1, a support ring 2, a water storage container 3, a water injection pipe 4, a water pump 5, a flowmeter 6, a control valve 7, a first water level sensor 8, a second water level sensor 9, a throwing pipe 10, a support rib 11, a baffle 12 and a bracket 13.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The structure of the on-site permeable pavement blocking test device provided by the embodiment is shown in fig. 1 and comprises a water injection assembly and a test assembly, wherein the water injection assembly provides water for a pavement permeable test.
The water injection subassembly includes water injection pipe 4, water storage container 3, water pump 5 and flowmeter 6, and water storage container 3 arranges in on the road surface, and water pump 5 installs in water storage container 3, and the one end and the water pump 5 of water injection pipe 4 are connected, and flowmeter 6 installs on water injection pipe 4.
The test assembly comprises a measuring cylinder 1, a water level control assembly and a blockage simulation assembly, the bottom of the measuring cylinder 1 is open, the top of the measuring cylinder 1 is sealed, an annular bracket is arranged on the inner wall of the measuring cylinder 1, and the lower part of the measuring cylinder 1 is embedded in a road surface.
The water level control assembly comprises a first water level sensor 8, a second water level sensor 9 and a control valve 7, the control valve 7 is installed on the water injection pipe 4, the first water level sensor 8 and the second water level sensor 9 are respectively arranged on the inner wall of the measuring cylinder 1, and the first water level sensor and the second water level sensor are respectively connected with the control valve. The water level that second water level sensor responds to is less than the water level that first water level sensor 8 responds to, and the water level that first water level sensor 8 responds to is higher than test road surface 100mm, and the water level difference that first water level sensor 8 and second water level sensor 9 respond to is less than 5 mm.
The blockage simulation assembly comprises a storage bin, a throwing pipe 10, a baffle 12 and a baffle support, wherein the storage bin is used for storing particles for simulating road surface blockage, and the throwing pipe 10 is used for throwing the particles for simulating road surface blockage. The vertical setting of pipe 10 is thrown, throws pipe 10 entry and stores storehouse discharge gate intercommunication, throws pipe 10 export and 1 top central threaded connection of measuring cylinder, the other end and the pipe 10 intercommunication of throwing of water injection pipe 4.
The baffle support includes brace rod 11 and support ring 2, and brace rod 11 has many, and baffle 12 is discoid, and baffle 12 is located support ring 2, and baffle 12 is the same with support ring 2's axis, and many brace rods 11 along circumferencial direction evenly distributed outside baffle 12, and the one end and the baffle 12 lateral wall of each brace rod 11 are connected, and the other end and the 2 interior wall connections of support ring of each brace rod 11. The baffle 12 and the baffle bracket are both positioned in the measuring cylinder, the baffle 12 is parallel to the road surface, the lower part of the support ring 2 is inserted into the bracket 13, the outlet of the throwing pipe 10 is positioned right above the baffle 12, and the axes of the throwing pipe 10 and the baffle 12 are the same.
The field blockage test device for the field permeable pavement blockage test is used for carrying out a field blockage test, and comprises the following specific steps:
1. the whole device is installed, water is filled into the water storage container 3, and the control valve 7 is opened to fill water into the measuring cylinder 1;
2. when the water level of the measuring cylinder 1 reaches the preset sensing water level of the first water level sensor 8, the first water level sensor 8 sends a closing signal to the control valve 7, and when the water level is reduced to the preset sensing water level of the second water level sensor 9, the second water level sensor 9 sends an opening signal to the control valve 7, so that circulation is realized, and the water level in the measuring cylinder 1 can be basically controlled to be stable because the difference between the water levels sensed by the first water level sensor 8 and the second water level sensor 9 is smaller and is controlled within 5 mm;
3. opening a feeding valve, slowly and uniformly adding blocking particles to a baffle plate 12 by a feeding pipe 10, adding 20g of the blocking particles per minute, and when water is added to a measuring cylinder through a water injection pipe 4, uniformly flushing the blocking particles on the baffle plate 12 into the measuring cylinder 1 under the action of water flow so as to uniformly reach the surface of a road surface, and further entering gaps of the road surface along with the water flow, and simulating the situation that the road surface is blocked in such a way;
4. starting timing from the beginning of putting the blocking particles, measuring the water seepage volume for 1 time by a flowmeter every 2 minutes, recording the accumulated volume flow reading of the flowmeter 6 at each time node, and carrying out difference on the accumulated volume flow of the flowmeters 6 at the front time node and the rear time node to obtain the water seepage volume measured at the rear time node, wherein when the difference between the water seepage volumes before and after 2 times appears continuously is not more than 5% of the water seepage volume of the rear time node, the test can be finished;
6) and (3) calculating the permeability coefficient of the blocked permeable pavement according to the following formula:
in the formula: kiThe permeability coefficient measured for the ith time of the permeable pavement is mm/s; a is the area of the inner diameter of the measuring cylinder 1 in mm2(ii) a t is the duration of one measurement, s; q. q.siMeasured volume of water penetration in mm for the ith measurement3；
Note: the hydraulic slope drop of the test is a dimensionless fixed value during the test, the hydraulic slope drop does not participate in calculation, and the attenuation of the permeability coefficient is presumed through numerical value comparison in the test.
Claims (5)
1. The utility model provides a be used for on-spot permeable pavement to block up test device which characterized in that: the water injection assembly comprises a water injection pipe, the test assembly comprises a measuring cylinder, a water level control assembly and a blockage simulation assembly, the bottom of the measuring cylinder is open, and the lower part of the measuring cylinder is embedded in a road surface;
the water level control assembly comprises a first water level sensor, a second water level sensor and a control valve, the control valve is installed on the water injection pipe, the first water level sensor and the second water level sensor are respectively arranged on the inner wall of the measuring cylinder, the first water level sensor and the second water level sensor are respectively connected with the control valve, and the water level sensed by the second water level sensor is lower than the water level sensed by the first water level sensor;
the blockage simulation assembly comprises a throwing pipe, a throwing valve, a baffle and a baffle support, wherein the throwing pipe, the throwing valve, the baffle and the baffle support are used for throwing blockage particles, the baffle is fixed in a measuring cylinder through the baffle support, the baffle is parallel to the road surface, the throwing valve is installed on the throwing pipe, the throwing pipe is communicated with the measuring cylinder, an outlet of the throwing pipe is located right above the baffle, and a water injection pipe is communicated with the throwing pipe.
2. The device for testing the blockage of the on-site permeable pavement according to claim 1, which is characterized in that: the water injection assembly further comprises a water storage container, a water pump and a flowmeter, the water storage container is arranged on the road surface, the water pump is installed in the water storage container, one end of the water injection pipe is connected with the water pump, and the flowmeter is installed on the water injection pipe.
3. The device for testing the blockage of the on-site permeable pavement according to claim 1, which is characterized in that: the baffle support include brace rod and support ring, the brace rod has many, the baffle is discoid, the baffle is located the support ring, the axis of baffle and support ring is the same, many brace rods along circumferencial direction evenly distributed outside the baffle, the one end and the baffle lateral wall of each brace rod are connected, the other end and the support ring inner wall of each brace rod are connected, be equipped with annular support groove on the test section of thick bamboo inner wall, the lower part of support ring inserts in holding in the palm the groove.
4. The device for testing the blockage of the on-site permeable pavement according to claim 1, which is characterized in that: the top of the measuring cylinder is sealed, and the outlet of the throwing pipe is in threaded connection with the center of the top of the measuring cylinder.
5. The device for testing the blockage of the on-site permeable pavement according to claim 1, which is characterized in that: the water level difference sensed by the first water level sensor and the second water level sensor is less than 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122060472.4U CN216051289U (en) | 2021-08-30 | 2021-08-30 | Be used for on-spot permeable pavement to block up test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122060472.4U CN216051289U (en) | 2021-08-30 | 2021-08-30 | Be used for on-spot permeable pavement to block up test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216051289U true CN216051289U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122060472.4U Active CN216051289U (en) | 2021-08-30 | 2021-08-30 | Be used for on-spot permeable pavement to block up test device |
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| CN (1) | CN216051289U (en) |
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2021
- 2021-08-30 CN CN202122060472.4U patent/CN216051289U/en active Active
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