CN110308084A - Simulate the real-time measurement apparatus of water-permeable brick real operating environments and coefficient of permeability variation - Google Patents
Simulate the real-time measurement apparatus of water-permeable brick real operating environments and coefficient of permeability variation Download PDFInfo
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- 239000011449 brick Substances 0.000 title claims abstract description 84
- 230000035699 permeability Effects 0.000 title claims abstract description 40
- 238000005259 measurement Methods 0.000 title claims abstract 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 239
- 238000004088 simulation Methods 0.000 claims abstract description 19
- 230000008595 infiltration Effects 0.000 claims abstract description 17
- 238000001764 infiltration Methods 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- 230000035515 penetration Effects 0.000 claims description 10
- 229940099259 vaseline Drugs 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 abstract 2
- 229920005372 Plexiglas® Polymers 0.000 abstract 2
- 239000007787 solid Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011380 pervious concrete Substances 0.000 description 2
- 230000036619 pore blockages Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000725 suspension Substances 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
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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Abstract
The invention discloses a kind of simulation water-permeable brick real operating environments and the real-time measurement apparatus of coefficient of permeability variation, including plexiglass box, horizontal rainfall runoff simulator, rainfall simulator and pressure sensor and data acquisition device.Water-permeable brick is placed in infiltration area in plexiglass box in certain slope, and exhalant region end is equipped with the adjustable height overflow hole of adjustable water-permeable brick surface rain water height of run-off；Horizontal rainfall runoff simulator is equipped with the valve of adjustable rainfall runoff flow, rainfall simulator is equipped with the single-chip computer control system of adjustable rainfall intensity, and opening and closing combination can be carried out to valve in horizontal rainfall runoff simulator and rainfall simulator and obtains various rainfall runoff environment.The real-time coefficient of permeability of water-permeable brick can be calculated using Darcy's law according to head loss in water-permeable brick and infiltration area water yield.The present invention has many advantages, such as the true rainfall runoff environment of simulation, can real-time measurement coefficient of permeability, simple structure, easy to use.
Description
Technical Field
The invention belongs to the technical field of rainwater purification and cyclic utilization, and particularly relates to a real-time measuring device capable of simulating the real working environment and the change of a water permeability coefficient of a water permeable brick, which is suitable for researching the water permeability, the blockage and the control process and effect of the water permeable brick.
Background
The problem of water permeability attenuation caused by pore blockage often appears in the practical use process of the permeable pavement for paving the permeable bricks, and even some pavements can completely lose the water permeability within a few years. The water permeability of the water permeable brick is characterized by a water permeability coefficient, and pore blockage is generally represented by reduction of the water permeability coefficient. The existing permeable coefficient testing device for permeable bricks is given by national standard GB/T25993-. The actual rainwater runoff generally contains solid suspended substances such as silt with different concentrations, when the rainwater runoff infiltrates through the water permeable brick, part of the solid suspended substances such as silt can be intercepted on the surface and inside of the water permeable brick, so that the water permeability of the water permeable brick is reduced, namely the water permeable brick is blocked, the water permeability coefficient of the water permeable brick needs to be measured in real time, and the water permeability of the water permeable brick under actual different rainwater runoff conditions is evaluated. Aiming at the problem of the blockage of the ubiquitous water permeable brick, the blockage of the water permeable brick is relieved from the source by adopting methods such as surface cleaning, high-pressure water gun flushing, vacuum negative pressure suction and the like to clean solid suspended substances intercepted by the water permeable brick, or adopting methods such as improving the surface hydrophilicity and hydrophobicity of the water permeable brick, optimizing the pore structure of the water permeable brick and the like; however, how to improve the water permeability of the water permeable bricks by the methods needs to be judged by measuring the water permeability coefficient of the water permeable bricks in real time.
Although a device capable of recording the change of the permeability coefficient of the pervious concrete in real time is reported in a document (such as the Texin, China Highway school report 2016, 29 (10): 1-11+19), the device cannot truly simulate the actual environmental conditions of the runoff of the rainwater, and is mainly represented as follows: (1) the pervious concrete adopted by the method is horizontally paved and does not conform to the actual slope pavement; (2) different blade rotating speeds are adopted to generate different rainwater runoff flow velocities, the rainwater runoff is horizontally-rotating water flow without gravity gradient and does not conform to the actual rainwater runoff conditions, and the actual rainwater runoff is horizontal gravity flow based on a certain road surface gradient; (3) the rainfall environment is simulated only by spraying a fixed amount of water through the rainwater sprayer, the actual rainfall intensity is constantly changed according to a certain rainfall pattern, and the road surface rainwater runoff in the rainfall and after the rainfall stops generally exists, so that the device cannot simulate the actual rainfall and rainwater runoff environment, the representativeness of the test result is insufficient, and the device cannot be really and effectively used for guiding the actual application.
Disclosure of Invention
The invention aims to provide a real-time measuring device capable of simulating the real working environment and the change of the water permeability coefficient of a water permeable brick aiming at the defects of the existing water permeable brick working environment simulation and real-time water permeability coefficient measuring device. The device main functions include: simulating the real working environment of the water permeable bricks and the downward infiltration process of the ground rainwater runoff through the water permeable bricks in the actual rainfall process; and synchronously detecting the pressure water head between the upper surface and the lower surface of the permeable brick and the change condition of the permeable water quantity of the permeable brick in real time.
The invention is realized by adopting the following technical scheme:
the real-time measuring device for simulating the real working environment and the change of the water permeability coefficient of the water permeable brick comprises an organic glass container, a horizontal rainwater runoff simulating device, a rainfall simulating device, a pressure sensor and a data acquisition device; wherein,
the interior of the organic glass container is divided into a water inlet area, a penetration area and a water outlet area which are sequentially connected side by side, the bottoms of the water inlet area and the water outlet area are on the same horizontal plane, the bottom of the penetration area is lower than the bottoms of the water inlet area and the water outlet area, the water inlet area and the penetration area as well as the penetration area and the water outlet area are respectively communicated through perforated tracery walls at the bottoms, the tail end of the water outlet area is provided with an overflow hole with adjustable height, and the bottom of the penetration area is provided with a water;
the pressure sensor and the data acquisition device comprise two pressure sensors and a data acquisition system;
during the test, the water permeable brick is arranged in a permeation area of the organic glass container and has a preset gradient, and the specific gradient value is selected in a typical road surface gradient interval; the two pressure sensors are respectively arranged on the upper side and the lower side of the water permeable brick, are connected with a data acquisition system, are connected with a computer through an analog-to-digital converter and are used for measuring the pressure difference on the two sides of the water permeable brick so as to obtain the data of the head loss;
the horizontal rainwater runoff simulating device is used for providing simulated horizontal rainwater runoff, the rainfall simulating device is used for providing simulated rainfall, the horizontal rainwater runoff can enter the infiltration zone together with the rainfall through the perforated flower wall from the water inlet zone or independently enter the infiltration zone so as to simulate a rainwater runoff environment in the rainfall or after the rainfall stops, one part of the horizontal rainwater runoff penetrates through the water permeable bricks arranged in the infiltration zone to permeate to the bottom of the infiltration zone and flows out from the water outlet, and the other part of the horizontal rainwater runoff is discharged from the overflow hole of the water outlet zone.
The invention is further improved in that the water inlet area, the infiltration area and the water outlet area are arranged in the same width.
The invention further improves the structure that the water-saving device also comprises a water storage device, and the water flowing out from the water outlet of the permeation area and the water discharged from the overflow hole of the water outlet area are collected in the water storage device.
The horizontal rainwater runoff simulating device is further improved in that the horizontal rainwater runoff simulating device comprises a rainwater runoff water storage device, a stirrer, a water pump and a water conveying pipe, wherein the stirrer is used for stirring the rainwater doped with silt in the rainwater runoff water storage device to ensure that the silt in the rainwater is suspended, and then the rainwater is conveyed to a water inlet area through the water pump and the water conveying pipe.
The invention is further improved in that a valve and a flowmeter are also arranged on the water delivery pipe of the horizontal rainwater runoff simulating device.
The invention is further improved in that the rainfall simulation device comprises a rainwater storage device, a water pump, a water delivery pipe and a water sprayer, wherein rainwater in the rainwater storage device is delivered to the upper part of the infiltration area by the water pump and the water delivery pipe, and is sprayed onto the water permeable bricks by the water sprayer to simulate the rainfall process.
The rainfall simulation device is further improved in that a valve and a flowmeter are further arranged on a water conveying pipe of the rainfall simulation device, and the opening degree of the valve is controlled by a system based on a single chip microcomputer to realize rainfall intensity under different rainfall durations.
The invention is further improved in that when the permeable brick is placed in the permeable area of the organic glass container, Vaseline and a rubber ring are adopted to fix the periphery of the permeable brick.
The invention is further improved in that the water inlet and outlet of the infiltration zone adopt perforated tracery walls, the flow rate of the horizontal runoff is controlled by the area of the perforated tracery walls, and the diameter d and the number n of the holes of the perforated tracery walls are according to a formulaDetermining that A is the total area of the holes and m2(ii) a Q is the average flow through the orifice, m3S; d is the diameter of a single eyelet, m; n is the number of holes.
The invention has the following beneficial technical effects:
the real-time measuring device capable of simulating the real working environment and the water permeability coefficient change of the water permeable bricks, provided by the invention, is used for placing the water permeable bricks in a permeable area at a certain gradient so as to simulate the actual water permeable brick pavement environment, and starting an experiment after fixing the water permeable bricks. Stirring simulated pavement rainwater in the rainwater runoff water storage device by using a stirrer to suspend solid suspended substances in water so as to simulate ground rainwater uniformly distributed by the solid suspended substances, conveying the ground rainwater to a water inlet area by using a water pump, and simulating ground rainwater runoff to wash the water permeable bricks by using water inlet and outlet of the perforated tracery wall; stirring simulated atmospheric rainfall in an atmospheric rainfall water storage device by using a stirrer to suspend solid suspended substances in water so as to simulate atmospheric rainfall with the solid suspended substances uniformly distributed, and spraying the simulated rainfall by using a sprayer; the method has the advantage of simulating the actual real working environment of the water permeable brick, and the real-time water permeability coefficient of the water permeable brick under different working environments can be measured. In addition, the different rainwater runoff depths of the surfaces of the permeable bricks in the permeable zone can be obtained by adjusting the height of the overflow hole at the tail end of the water outlet zone.
Furthermore, the rainfall on the fixed pavement area can be obtained by utilizing the valve opening degree change based on the single chip microcomputer control according to the change rule of different rainfall intensities along with the duration of rainfall, and the simulation application range of different rainfall environments is enlarged.
Furthermore, the working environment of the water permeable brick at the early stage of rainfall and when no rainwater runoff is generated on the road surface can be simulated by independently opening a water inlet pipe valve in the rainfall simulation device; the working environment of the permeable brick during continuous rainfall and rainwater runoff generation on a road surface can be simulated by simultaneously opening the rainwater runoff simulating device and the water inlet pipe valve in the rainfall simulating device; the water inlet pipe valve in the rainwater runoff simulation device can be independently opened to simulate the working environment of the water permeable brick after rainfall is finished and when rainwater runoff is generated on the road surface, and the real simulation of the actual working environment of the water permeable brick under different rainfall periods and road surface rainwater runoff conditions is improved.
Furthermore, the pressure sensors on the upper side and the lower side of the water permeable brick can quickly transmit sensing signals to the data acquisition system to obtain the pressure difference on the two sides of the water permeable brick after the data acquisition system is analyzed by a computer, and meanwhile, the flow velocity of the water outlet pipe is measured by the ultrasonic flow velocity sensor, so that the flow is obtained. The permeability coefficient is calculated by Darcy's law:
in the formula: k is a radical ofT-water permeability coefficient at water temperature T ℃, cm/s; q is the water seepage amount in t seconds, mL; l is the thickness of the sample, cm; a-area of the upper surface of the sample, cm2(ii) a H, the pressure difference between the upper side and the lower side of the sample (namely the loss of a water head in the water permeable brick), cm; t is time, s.
Further, fixing the water permeable brick by utilizing vaseline and a rubber ring, and starting an experiment under the condition of rainwater runoff after the vaseline is dried; after the experiment is finished, the permeable bricks can be taken out, and other permeable bricks are adopted to carry out similar experiments.
In conclusion, the device capable of simulating the water permeability brick to measure the change of the water permeability coefficient in real time under the real working environment has the advantages of simulating the real environment and measuring the water permeability coefficient in real time; and the structure is simple, and the maintenance and the experiment are convenient.
Drawings
FIG. 1 is a schematic view of a real-time measuring device for simulating the real working environment and the change of the water permeability coefficient of the water permeable brick of the invention.
Description of reference numerals:
1-organic glass container, 2-horizontal rainwater runoff simulation device, 3-rainfall simulation device, 4-pressure sensor and data acquisition device, 5-perforated wall, 6-overflow hole, 7-water outlet, 8-permeable brick, 9-runoff rainwater storage device, 10-stirrer, 11-water pump, 12-water conveying pipe, 13-valve, 14-flowmeter, 15-rainwater storage device, 16-water sprayer, 17-pressure sensor, 18-data acquisition system, 19-vaseline and rubber ring, 20-single chip microcomputer-based valve opening degree control system.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
As shown in figure 1, the real-time measuring device for simulating the real working environment and the change of the water permeability coefficient of the water permeable brick provided by the invention comprises an organic glass container 1, a horizontal rainwater runoff simulating device 2, an atmospheric rainfall simulating device 3, a pressure sensor and a data collecting device 4.
The organic glass container 1 is a square container made of organic glass, the thickness is 4-5mm, the container is bonded together by glass cement and is divided into a water inlet area, a permeation area and a water outlet area which are connected in sequence in parallel and have equal width, the bottom surface of the middle permeation area is about 30cm lower than the water inlet area and the water outlet area and is used for carrying out a permeation test on a water permeable brick 8 placed at a certain gradient, a water outlet 7 is reserved at the bottom of the middle permeation area and is connected with a water delivery pipe, the permeated water is discharged into a water storage device 19, and a flow meter. The placed water permeable brick 8 is fixed by Vaseline and a rubber ring.
The water inlet area and the permeation area are connected with each other through a perforated tracery wall 5, and the size and the number of the holes of the perforated tracery wall are according to a formulaDetermination (A is total area of perforation, cm)2(ii) a Q is the average flow through the orifice, m3S; d is a single eyeletDiameter, cm; n is the number of holes, and the size of the holes can be set to 1 cm.
The horizontal rainfall runoff simulation device 2 consists of a rainfall runoff water receiver 9, a stirrer 10, a water pump 11, a water delivery pipe 12, a valve 13 and a flowmeter 14; the rainwater doped with silt in the water receiver ensures that the silt in the water is suspended under the action of the stirrer, is conveyed to the water inlet area through the water pump and then flows through the infiltration area so as to simulate different road surface rainwater runoff processes. The rainfall simulation device 3 consists of an atmospheric rainfall water storage device 15, a water pump 11, a water delivery pipe 12, a valve 13, a flowmeter 14 and a water sprayer 16; rainwater in the atmospheric rainfall water storage device is conveyed to the upper part of the infiltration area by a water pump and sprayed to the water permeable bricks 8 by the water sprayer 16 to simulate different atmospheric rainfall processes.
The rainwater in the rainwater runoff water storage device 9 is water doped with solid suspended substances such as silt and the like and is used for simulating the rainwater runoff of the road surface under the real environment, and the stirrer 10 in the rainwater runoff water storage device 9 is used for ensuring the suspension of the solid suspended substances such as silt and the like. The runoff rainwater is pressurized by a water pump 11 and is delivered to a water inlet area of the organic glass container 1 through a water delivery pipe 12, and a valve 13 and a flowmeter 14 are arranged on the water delivery pipe 12 and used for controlling the flow; flows into the permeable area through the perforated tracery wall 5, one part of the permeable tracery wall penetrates into the water storage device 19 through the permeable brick 8, and the other part of the permeable tracery wall flows into the water outlet area from the other side of the perforated tracery wall 5, and is discharged from the overflow port 6 after accumulating a certain volume. The water in the atmospheric rainfall water receiver 15 is used for simulating the rainfall process, is pressurized by the water pump 11, is conveyed to the upper part of the infiltration area by the water conveying pipe 12, and is sprayed by the water sprayer 16 to simulate the rainfall process; install valve 13 and flowmeter 14 on the raceway 12, the valve is used for the control flow size, specifically installs valve 13 and flowmeter 14 through the raceway, and the valve is used for the control flow size, and the different opening of valve specifically realizes through valve opening control system 20 based on the singlechip to rainfall intensity under the different rainfall duration of simulation, the flowmeter is used for surveying the real-time flow that passes through in the pipe.
And the different rainwater runoff depths of the surfaces of the permeable bricks in the permeable zone are obtained by adjusting the height of the overflow hole 6 at the tail end of the water outlet zone.
In the permeation process, the liquid level of a permeation area rises, two pressure sensors 17 are respectively arranged on the upper side and the lower side of the water permeable brick 8 and used for measuring the pressure difference between the two sides, and the sensing data are analyzed by a data acquisition system 18 to obtain a result.
In the process of simulating the rainfall runoff, only the valve 13 on the water conveying pipe 12 in the atmospheric rainfall simulation system 3 can be opened to simulate the environment of the rainfall runoff without the road surface in the early stage of atmospheric rainfall; the valve 13 on the water pipe 12 in the horizontal rainwater runoff system 2 and the valve 13 on the water pipe 12 in the atmospheric rainfall simulation system 3 can be opened simultaneously to simulate the environment with road surface rainwater runoff after atmospheric rainfall lasts for a period of time; or only opening the valve 13 on the water pipe 12 in the horizontal rainwater runoff system 2 to simulate the environment with road surface rainwater runoff after the atmospheric rainfall stops.
The invention ensures that the rainwater runoff on the road surface stably passes through the surface of the permeable brick through the perforated tracery wall 5, can simulate the rainwater scouring process in a real environment, and can adjust the flow rate and flow rate according to requirements. The permeability coefficient is measured in real time by a data acquisition system 18 by combining a pressure sensor 17 with a flowmeter.
Claims (9)
1. The real-time measuring device for simulating the real working environment and the change of the water permeability coefficient of the water permeable brick is characterized by comprising an organic glass container (1), a horizontal rainwater runoff simulating device (2), a rainfall simulating device (3), a pressure sensor and a data acquisition device (4); wherein,
the interior of the organic glass container (1) is divided into a water inlet area, a penetration area and a water outlet area which are sequentially connected side by side, the bottoms of the water inlet area and the water outlet area are on the same horizontal plane, the bottom of the penetration area is lower than the bottoms of the water inlet area and the water outlet area, the water inlet area and the penetration area as well as the penetration area and the water outlet area are respectively communicated through perforated tracery walls (5) at the bottoms, the tail end of the water outlet area is provided with an overflow hole (6) with adjustable height, and the bottom of the penetration area is provided with a water outlet;
the pressure sensor and data acquisition device (4) comprises two pressure sensors (17) and a data acquisition system (18);
during the test, the water permeable brick (8) is arranged in a permeation area of the organic glass container (1) and has a preset gradient, and the specific gradient value is selected in a typical road gradient interval; the two pressure sensors (17) are respectively arranged on the upper side and the lower side of the water permeable brick (8), are connected with the data acquisition system (18), are connected with a computer through an analog-to-digital converter and are used for measuring the pressure difference of the two sides of the water permeable brick (8) so as to obtain the data of the head loss;
the horizontal rainwater runoff simulating device (2) is used for providing simulated horizontal rainwater runoff, the rainfall simulating device (3) is used for providing simulated rainfall, the horizontal rainwater runoff can enter the infiltration zone together with the rainfall or independently from the water inlet zone through the perforated tracery wall (5) so as to simulate a rainwater runoff environment in the rainfall or after the rainfall stops, one part penetrates through the water permeable bricks (8) arranged in the infiltration zone to infiltrate to the bottom of the infiltration zone and flows out of the water outlet (7), and the other part is discharged from the water outlet zone overflow hole (6).
2. The device for real-time measurement of the real working environment and the water permeability coefficient change of the simulated water permeable brick according to claim 1, wherein the water inlet area, the water permeable area and the water outlet area are arranged in the same width.
3. The device for real-time measurement of the real working environment and the change of the water permeability coefficient of the simulated water permeable brick according to claim 1, characterized by further comprising a water storage device (19), wherein the water flowing out from the water outlet (7) of the permeable area and the water discharged from the overflow holes (6) of the water outlet area are collected in the water storage device (19).
4. The real-time measurement device for simulating the real working environment and the water permeability coefficient change of the water permeable brick according to claim 1, wherein the horizontal rainwater runoff simulating device (2) comprises a rainwater runoff water storage device (9), a stirrer (10), a water pump (11) and a water conveying pipe (12), and the stirrer (10) is used for stirring the rainwater doped with silt in the rainwater runoff water storage device (9) to ensure that the silt in the water is suspended and then conveyed to a water inlet area through the water pump (11) and the water conveying pipe (12).
5. The real-time measuring device for simulating the real working environment and the water permeability coefficient change of the water permeable bricks according to claim 4, wherein a valve (13) and a flowmeter (14) are further arranged on the water conveying pipe (12) of the horizontal rainwater runoff simulating device (2).
6. The real-time measurement device for simulating the real working environment and the water permeability coefficient change of the water permeable brick according to claim 1, wherein the rainfall simulation device (3) comprises a rainwater storage device (15), a water pump (11), a water delivery pipe (12) and a sprinkler (16), rainwater in the rainwater storage device (15) is delivered to the upper part of the infiltration area by the water pump (11) and the water delivery pipe (12), and is sprayed onto the water permeable brick (8) through the sprinkler (16) to simulate the rainfall process.
7. The real-time measuring device for simulating the real working environment and the water permeability coefficient change of the water permeable brick according to claim 6, wherein a valve (13) and a flowmeter (14) are further arranged on a water pipe (12) of the rainfall simulation device (3), and the opening degree of the valve realizes rainfall intensity under different rainfall durations through a system based on single chip microcomputer control.
8. The real-time measuring device for simulating the real working environment and the change of the water permeability coefficient of the water permeable brick according to claim 1, wherein when the water permeable brick (8) is placed in the permeable area of the organic glass container (1), Vaseline and a rubber ring are used for fixing the periphery of the water permeable brick (8).
9. The real-time measurement device for simulating the real working environment and the water permeability coefficient change of the water permeable brick according to claim 1, characterized in that the water inlet and the water outlet of the permeable area both adopt perforated tracery walls (5), the flow rate of horizontal runoff is controlled by the area of the perforated tracery walls (5), and the diameter d and the number n of holes of the perforated tracery walls (5) are according to a formulaDetermining that A is the total area of the holes and m2(ii) a Q is the average flow through the orifice, m3S; d is the diameter of a single eyelet, m; n is the number of holes.
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| CN111006986A (en) * | 2019-12-25 | 2020-04-14 | 西安建筑科技大学 | Device and method for testing rainwater retention capacity and peak delay effect of permeable pavement |
| CN112067264A (en) * | 2020-08-19 | 2020-12-11 | 北京北排水务设计研究院有限公司 | System and method for testing current limiting effect of cut-off device |
| CN113029891A (en) * | 2019-12-24 | 2021-06-25 | 山西大地华基建材科技有限公司 | Demonstration device for water permeability of reaction permeable brick |
| CN113959925A (en) * | 2021-10-29 | 2022-01-21 | 西安建筑科技大学 | Ecological water permeable pavement work simulation device and simulation method |
| CN114813501A (en) * | 2022-03-25 | 2022-07-29 | 北京建筑大学 | Intelligent permeability coefficient tester |
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