CN109946211A - A kind of porous pavement infiltration coefficient in situ detection instrument and method - Google Patents
A kind of porous pavement infiltration coefficient in situ detection instrument and method Download PDFInfo
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- CN109946211A CN109946211A CN201711394180.6A CN201711394180A CN109946211A CN 109946211 A CN109946211 A CN 109946211A CN 201711394180 A CN201711394180 A CN 201711394180A CN 109946211 A CN109946211 A CN 109946211A
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- porous pavement
- infiltration coefficient
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- 230000008595 infiltration Effects 0.000 title claims abstract description 33
- 238000001764 infiltration Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 177
- 239000011380 pervious concrete Substances 0.000 claims description 9
- 230000035699 permeability Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Abstract
The invention discloses a kind of porous pavement infiltration coefficient in situ detection instrument and methods, it solves the problems, such as that the precision of porous pavement in situ detection in the prior art is not high, detection efficiency is lower, has the effect of measurement error caused by capable of quickly measuring the infiltration coefficient of porous pavement, can be avoided because of porous pavement water suction, prevents water from leaking hunting；Its technical solution are as follows: including the inner and outer tubes being set-located, the inner wall of said inner tube and outer tube is equipped with water level sensor；It is filled the water from water supply device into inner and outer tubes；The water supply device includes water tank, is equipped with that water pipe corresponding with inner tube, outer tube, water pump provide the pressure of water supply for water pipe respectively in water tank；The water level sensor connects controller with water pump, and controller controls the opening and closing of water pump by receiving the electric signal of water level sensor feedback.
Description
Technical field
The present invention relates to field of civil engineering more particularly to a kind of porous pavement infiltration coefficient in situ detection instrument and methods.
Background technique
Porous pavement is also referred to as porous pavements, including permeable brick paving and pervious concrete pavement etc., in coarse aggregate skeleton
Inside has a large amount of connectivity hole that road surface is made to have good water permeability, and a large amount of rainwater can quickly be allowed to penetrate into ground
Under, to effectively reduce or eliminate urban storm flood.However, containing in the rainwash generated due to rainfall a large amount of
Suspended particulate (such as silt particle, clast), these mineral or organic fine grained can constantly enter seepy material hole with water flow, cause
Pore plugging, seepy material and base's permeance property constantly reduce, and porous pavement is caused to be difficult to play drain function, infiltration coefficient
It constantly reduces, finally evolves into non-porous pavement, reduced service life increases the possibility that urban flooding and freezing-thawing disaster occur
Property.
Although can be by mode that during the rainfall or after rainfall, road pavement surface area water situation is estimated immediately
Estimate porous pavement water permeability, in practice, mostly use greatly a certain piece of water-permeable pavement is continuously monitored it is (usually more than several
Year) variation of its coefficient of permeability assesses its water permeable ability.
It would therefore be desirable to have a kind of instruments of monitoring porous pavement infiltration coefficient variation, and long-term original position can be carried out with road pavement
Measurement, to reflect and assess the water permeable ability of porous pavement.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of porous pavement infiltration coefficient in situ detection instrument and sides
Method has measurement error caused by capable of quickly measuring the infiltration coefficient of porous pavement, can be avoided because of porous pavement water suction, prevents
The effect that sealing leaks hunting.
The present invention adopts the following technical solutions:
A kind of porous pavement infiltration coefficient in situ detection instrument, including the inner and outer tubes being set-located, said inner tube and
The inner wall of outer tube is equipped with water level sensor；It is filled the water from water supply device into inner and outer tubes；
The water supply device includes water tank, is equipped with that water pipe corresponding with inner tube, outer tube, water pump mention respectively for water pipe in water tank
For the pressure of water supply；The water level sensor connects controller, the electricity that controller is fed back by receiving water level sensor with water pump
The opening and closing of signal control water pump.
Further, the bottom outside of the outer tube is arranged with washer.
Further, the washer is made of silica gel material.
Further, the side wall of said inner tube is equipped with scale.
Further, the meter full scale is 0~30cm, scale division value mm.
Further, water pipe corresponding with outer tube is equipped with valve, and water pipe corresponding with inner tube is equipped with valve and flow
Meter.
Further, it is connected between said inner tube and outer tube by multiple connecting rods.
Further, be respectively provided with two water level sensors in inner and outer tubes, two water level sensor intervals settings away from
From.
The detection method of porous pavement infiltration coefficient in situ detection instrument, comprising the following steps:
Step 1 will test instrument and be placed horizontally on porous pavement, successively opens valve and water pump, is managed respectively inwards by water pipe
With water-filling in outer tube to porous pavement pre-wetted；
Step 2 reaches the scheduled upper water level h of inner and outer tubes when water level1When, the upper water level h of inner and outer tubes1The water level at place
Water level signal is reached controller respectively by sensor, and control water pump stops supplying water；When water level is reduced to scheduled lower water level h2When,
Water level h under inner and outer tubes2Water level sensor water level signal is reached into controller respectively, control water pump resumes water supply；When interior
After pipe and outer tube water level maintain an equal level and stablize 5min, the flow in primary on flowmeter for pipe is recorded every 1min, records 5 times, takes altogether
The average value of flow is obtained, the flow of inner tube is used to calculation permeability coefficient.
Further, the infiltration coefficient are as follows:
Wherein, k is the infiltration coefficient of porous pavement, and Q is the flow value of flowmeter, and L is the thickness of pervious concrete pavement,
Δ h is head difference, A is the sectional area of inner tube.
Compared with prior art, the beneficial effects of the present invention are:
(1) water of outer tube of the present invention from top to bottom seepage flow, plays buffer action to inner tube seepage flow, can effectively prevent inner tube
Water to exosmosis extend, guarantee that the water of inner tube can only seep straight down, available accurate infiltration coefficient；
(2) inner and outer tubes water level remains unchanged when present invention measurement, and water level is controlled by the water level sensor of upper and lower water level,
It is accurately controlled in 1cm fluctuation range；
(3) porous pavement detector water permeable ability of the invention is strong, percolation flow velocity is fast, and with water pump rapid water filling, instead of
Manually poured with bucket, it is time saving and energy saving, improve infiltration efficiency；
(4) two water level sensors are respectively set in inner and outer tubes of the invention, to control inner and outer tubes respectively
Water inlet flow velocity, is consistent the water level of inner and outer tubes；Water level sensor is connected with controller, controls water pump by controller
Opening and closing with control supply water or cut off the water.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is that inner tube of the invention connect top view with outer tube；
Wherein, 1- pervious concrete pavement, 2- washer, 3- outer tube, 4- inner tube, the first water level sensor of 5-, 6- scale, 7-
Second water level sensor, 8- water pump, 9- water tank, 10- controller, 11- flowmeter, 12- valve, 13- water pipe, 14- connecting rod.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the precision for existing in the prior art porous pavement in situ detection is high, detection effect
The lower deficiency of rate, in order to solve technical problem as above, present applicant proposes a kind of porous pavement infiltration coefficient in situ detections
Instrument and method.
In a kind of typical embodiment of the application, as Figure 1-Figure 2, a kind of porous pavement infiltration coefficient is provided
In situ detection instrument, including outer tube 3, inner tube 4 and water supply device, water supply device include water tank 9, water pump 8, water pipe 13,12 and of valve
Flowmeter 11.
Said inner tube 4 and outer tube 3 are the cylindrical type transparent organic glass pipe of upper and lower opening, and the water of outer tube 3 from top to bottom seeps
Stream, plays buffer action to 4 seepage flow of inner tube, and the water of inner tube 4 can be effectively prevent to extend to exosmosis, guarantees the water of inner tube 4 only
It can seep straight down, available accurate infiltration coefficient；Inner tube 4 and 3 water level of outer tube remain unchanged (hydrostatic head method) when measurement,
Water level is controlled by upper and lower water level sensor, is accurately controlled in 1cm fluctuation range.
Said inner tube 4 is sheathed on the inside of outer tube 3, and the bottom outside of outer tube 3 is arranged with washer 2, and washer 2 is silica gel material
Matter, section is in circular ring shape, for preventing leak and abrasion.
The diameter of inner tube 4 is 30cm, can there is the scale of 0-30cm range, minimum scale 1mm on the wall surface of inner tube 4；Outside
The diameter of pipe 3 is 45cm, is highly 30cm；The outer circumferential wall of inner tube 4 passes through four symmetrical connecting rods 14 and outer tube 3
It is fixedly connected.
Two water levels are preset respectively in the inner wall of inner tube 4 and outer tube 3, i.e., upper water level and lower water level, upper water level and lower water level
Between be spaced 1cm；The upper water level of 4 inner wall of said inner tube and lower water level install two the first water level sensors 5, in the outer tube 3
The upper water level of wall and lower water level install two the second water level sensors 7, and the first water level sensor 5 and the second water level sensor 7 connect
Connect controller 10.
Since permeameter inner tube 4 is different with the seepage velocity of outer tube 3, two water pumps 8 are set in the water tank 9；Two water
Pump 8 is separately connected water pipe 13；The water outlet of one of water pipe 13 corresponds to the top of inner tube 4 for the water supply of inner tube 4, another water
The water outlet of pipe 13 corresponds to the top of outer tube 3 for the water supply of outer tube 3；11 He of flowmeter is equipped with for the water pipe 13 that inner tube 4 supplies water
Valve 12 is equipped with valve 12 for the water pipe 13 that outer tube 3 supplies water.
The water pump 8 connects controller 10, and controller 10 controls water pump 8 by receiving the electric signal of water level sensor feedback
Opening and closing.
The detection method of porous pavement infiltration coefficient in situ detection instrument, comprising the following steps:
Before step 1 measurement, the detector of the application is lain in a horizontal plane on pervious concrete pavement 1, valve is first opened
12, then open two water pumps 8 water-filling in pipe 4 and outer tube 3 respectively inwards, it is ensured that there is the water of 3L or more to flow from inner tube 4 and outer tube 3
Into pervious concrete, pre-wetted is carried out to pervious concrete, it in this way can be to avoid because of measurement error caused by the water suction of permeable coagulation；
Step 2 reaches inner tube 4 and the scheduled upper water level h of outer tube 3 when water level1When, upper water level h in inner tube 41First water at place
Upper water level h in level sensor 5 and outer tube 31Water level signal is reached controller 10 respectively by second water level sensor 7 at place, is controlled
Water pump 8 stops supplying water；
When water level is reduced to scheduled lower water level h2When, lower water level h in inner tube 42First water level sensor 5 and outer tube 3 at place
In lower water level h2Water level signal is reached controller 10 respectively by second water level sensor 7 at place, and control water pump 8 resumes water supply；
After inner tube 4 and 3 water level of outer tube maintain an equal level and stablize 5min, recorded on 4 flowmeter 11 of inner tube every 1min
Flow records 5 times altogether, obtains the average value of flow, and the flow of inner tube 4 is used to calculation permeability coefficient.
Hydrostatic head method measures infiltration coefficient according to Darcy's law, it may be assumed that
Wherein, k is the infiltration coefficient of pervious concrete pavement 1, unit cm/s；Q is the flow value of flowmeter, and unit is
cm3/s；, L is the thickness of pervious concrete pavement, unit cm；Δ h be head difference, unit cm, A be inner tube section
Product.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of porous pavement infiltration coefficient in situ detection instrument, which is characterized in that including the inner and outer tubes being set-located, institute
The inner wall for stating inner and outer tubes is equipped with water level sensor；It is filled the water from water supply device into inner and outer tubes；
The water supply device includes water tank, is equipped with that water pipe corresponding with inner tube, outer tube, water pump provide confession for water pipe respectively in water tank
The pressure of water；The water level sensor connects controller, the electric signal that controller is fed back by receiving water level sensor with water pump
Control the opening and closing of water pump.
2. a kind of porous pavement infiltration coefficient in situ detection instrument according to claim 1, which is characterized in that the outer tube
Bottom outside is arranged with washer.
3. a kind of porous pavement infiltration coefficient in situ detection instrument according to claim 2, which is characterized in that the washer is adopted
It is made of silica gel material.
4. a kind of porous pavement infiltration coefficient in situ detection instrument according to claim 1, which is characterized in that said inner tube
Side wall is equipped with scale.
5. a kind of porous pavement infiltration coefficient in situ detection instrument according to claim 4, which is characterized in that the scale model
It encloses for 0~30cm, scale division value mm.
6. a kind of porous pavement infiltration coefficient in situ detection instrument according to claim 1, which is characterized in that corresponding with outer tube
Water pipe be equipped with valve, water pipe corresponding with inner tube be equipped with valve and flowmeter.
7. a kind of porous pavement infiltration coefficient in situ detection instrument according to claim 1, which is characterized in that said inner tube and
It is connected between outer tube by multiple connecting rods.
8. a kind of porous pavement infiltration coefficient in situ detection instrument according to claim 1, which is characterized in that inner and outer tubes
Inside it is respectively provided with two water level sensors, two water level sensor interval set distances.
9. the detection method of -8 any porous pavement infiltration coefficient in situ detection instrument, feature exist according to claim 1
In, comprising the following steps:
Step 1 will test instrument and be placed horizontally on porous pavement, successively open valve and water pump, be managed respectively inwards by water pipe and outer
Water-filling is to porous pavement pre-wetted in managing；
Water level sensor of the step 2 when water level reaches the scheduled upper water level of inner and outer tubes, at the upper water level of inner and outer tubes
Water level signal is reached into controller respectively, control water pump stops supplying water；When water level is reduced to scheduled lower water level, inner tube and outer
Water level signal is reached controller respectively by the water level sensor for managing lower water level, and control water pump resumes water supply；When inner and outer tubes water
After position maintains an equal level and stablizes 5min, the flow in primary on flowmeter for pipe is recorded every 1min, is recorded 5 times altogether, obtains the flat of flow
The flow of mean value, inner tube is used to calculation permeability coefficient.
10. the detection method of porous pavement infiltration coefficient in situ detection instrument according to claim 9, which is characterized in that institute
State infiltration coefficient are as follows:
Wherein, k is the infiltration coefficient of porous pavement, and Q is the flow value of flowmeter, and L is the thickness of pervious concrete pavement, Δ h
For head difference, A is the sectional area of inner tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711394180.6A CN109946211A (en) | 2017-12-21 | 2017-12-21 | A kind of porous pavement infiltration coefficient in situ detection instrument and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711394180.6A CN109946211A (en) | 2017-12-21 | 2017-12-21 | A kind of porous pavement infiltration coefficient in situ detection instrument and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113033383A (en) * | 2021-03-23 | 2021-06-25 | 山东大学 | Permeable pavement blocking nondestructive detection method and system based on deep learning |
| CN113203671A (en) * | 2021-04-30 | 2021-08-03 | 长安大学 | Laser type permeable pavement permeability coefficient testing device and method |
| CN114216827A (en) * | 2021-11-22 | 2022-03-22 | 贵州公路集团第九工程有限公司 | Device and method for testing permeability coefficient of pervious concrete pavement |
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| CN113033383A (en) * | 2021-03-23 | 2021-06-25 | 山东大学 | Permeable pavement blocking nondestructive detection method and system based on deep learning |
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