CN105203442A - In-situ testing instrument and testing method for permeability coefficient of permeable pavement system - Google Patents
In-situ testing instrument and testing method for permeability coefficient of permeable pavement system Download PDFInfo
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- CN105203442A CN105203442A CN201510677350.6A CN201510677350A CN105203442A CN 105203442 A CN105203442 A CN 105203442A CN 201510677350 A CN201510677350 A CN 201510677350A CN 105203442 A CN105203442 A CN 105203442A
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Abstract
The invention discloses an in-situ testing instrument and testing method for a permeability coefficient of a permeable pavement system and belongs to the technical field of civil engineering. The in-situ testing instrument comprises the pavement system, a basic pipe fitting, a measuring pipe fitting and a water supply system, wherein the basic pipe fitting is vertically mounted in the pavement system, and the bottom end of the measuring pipe fitting is matched and connected with the top end of the basic pipe fitting; the water supply system comprises a water outlet pipe used for supplying water to the measuring pipe fitting, and a valve and a flowmeter are arranged on the water outlet pipe. The testing method comprises steps as follows: water is supplied to the measuring pipe fitting, so that the water reaches an overflow port and is prevented from being overflown, and the seepage flow is acquired through the flowmeter; and the seepage coefficient is acquired by dividing the seepage flow by the discharge area of the basic pipe fitting. In-situ measurement on the pavement is realized, the change of the permeability coefficient of the same location on the permeable pavement can be monitored for years, and a basis is provided for optimization design of the permeable pavement and selection of maintenance methods and opportunities.
Description
Technical field
The present invention relates to technical field of civil engineering, specifically a kind of porous pavement system infiltration coefficient in-situ test instrument and method of testing, for the change of long-term in-situ monitoring porous pavement infiltration coefficient.
Background technology
Porous pavement is also referred to as porous pavements, comprise pervious concrete pavement and asphalt paving etc., a large amount of connectivity holes is had to make road surface have good water permeability in coarse aggregate skeleton inside, a large amount of rainwater can be allowed fast to permeate the ground, thus effectively reduce or eliminate urban storm flood.
But; due to a large amount of suspended particles (as silt particle, chip etc.) contained in the rainwash that rainfall produces; these mineral or organic fine grained can constantly enter porous pavement hole with current; cause pore plugging; thus pervious concrete permeance property is constantly reduced, cause porous pavement to be difficult to play drain function, finally develop into non-porous pavement; serviceable life shortens, and increases the possibility of urban flooding and freezing-thawing disaster generation.
At present, when measuring the infiltration coefficient of the building materials such as cement, concrete, all obtain its infiltration coefficient by the test specimen of measurement core or making, but the original infiltration coefficient of building materials can only be obtained like this, along with the use on road surface, the change that the infiltration coefficient of same point affects along with Particle Blocking, rainfall and cleaning etc. on road surface cannot obtain, the maintenance process causing determining that porous pavement is best and opportunity, when carrying out the optimal design of porous pavement, also lack reliable foundation.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of porous pavement system infiltration coefficient in-situ test instrument and method of testing, this tester and method of testing road pavement can carry out long-term in site measurement, for the optimal design of porous pavement and maintenance process and choosing of opportunity provide foundation.
The present invention solves the technical scheme that its technical matters takes: porous pavement system infiltration coefficient in-situ test instrument, comprise Road System, described Road System comprises porous pavement, permeable roadbed and compacting original soil from top to bottom successively, also comprises basic pipe fitting, measures pipe fitting and water system; What described basic pipe fitting was vertical is installed in Road System, and the measurement bottom of pipe fitting and the top of basic pipe fitting are connected; Described water system comprises rising pipe, and rising pipe is used for supplying water in measurement pipe fitting, and rising pipe is provided with valve and flowmeter.
If in order to the infiltration coefficient of the cascade system of measuring porous pavement and permeable roadbed, the end face of described basic pipe fitting bottom is above compacting original soil and and have gap between the upper surface of compacting original soil.The water infiltrated when to leave described gap be to measure can be drained, and the width in gap generally gets 1 ~ 5cm.
If the infiltration coefficient in order to measure merely porous pavement, the end face of described basic pipe fitting bottom is concordant with the lower surface of porous pavement.
Further technical scheme is: the top end face of described basic pipe fitting is concordant with the upper surface of described Road System, and the connection between described measurement pipe fitting and basic pipe fitting is for removably connecting.When not measuring, measure pipe fitting can dismantle, now the top end face of basic pipe fitting and the upper surface of Road System concordant, do not affect the normal use of Road System.
Further technical scheme is: the top measuring pipe fitting sidewall is provided with overflow vent.Be provided with overflow vent, more convenient to operate when testing, improve the accuracy of result.
Further technical scheme is: the bottom of described measurement pipe fitting is nested with in the outside of basic tubular top, and the inside surface measuring pipe fitting sidewall coordinates with the intimate of basic pipe fitting sidewall.Both are nested with when can effectively avoid testing, and water is from basic pipe fitting and the gap outflow of measuring pipe fitting cooperation place, and the mode of connection can be grafting, also can for being threaded.Measurement pipe fitting is nested with in the outside of basic pipe fitting, guarantees that tested point discharge section area is consistent, ensure the accuracy of result.
Further technical scheme is: the arranged outside of described basic pipe fitting has the coupling pipe elements with basic pipe fitting coaxial cable, is provided with the annular groove holding and measure pipe fitting between coupling pipe elements and basic pipe fitting; When measuring, measure pipe fitting and be plugged in described annular groove, when not measuring, shutoff pipe fitting is inserted annular groove and is sealed.Arrange coupling pipe elements, can be convenient for measuring pipe fitting Fast Installation in use, when not using measurement pipe fitting, pulled down and use shutoff pipe fitting to be sealed by annular groove, one is the smooth of maintenance road surface, does not affect the use on road surface; Two is avoid foreign material to enter annular groove.
Further technical scheme is: described water system also comprises aqua storage tank and water pump, and water pump is positioned at the inside of aqua storage tank; Described rising pipe one end is connected with water pump, and the other end is positioned at the top of described measurement pipe fitting.Supplied water by aqua storage tank and water pump, be convenient to mount and dismount whenever and wherever possible, cost is low, moves and installs and removes all very convenient.
Basic pipe fitting of the present invention can adopt UPVC pipe, pvc pipe or steel pipe, and internal diameter is generally chosen between 100 ~ 300mm.
The present invention solves the technical scheme that its technical matters takes and also comprises: the method for testing of porous pavement system infiltration coefficient in-situ test instrument, supplied water in measurement pipe fitting by rising pipe, output is adjusted by valve, make the water surface reach overflow vent and keep not having the state of water overflow, now the reading of flowmeter is seepage flow flow; Described seepage flow flow, divided by the discharge section area of basic pipe fitting, obtains the seepage coefficient of Road System.
Further technical scheme is: described seepage flow flow gets the mean value of reading in flowmeter a period of time.The mean value getting reading in flowmeter a period of time can improve the reliability of test result, generally gets the mean value of 5 ~ 10 minutes.
The invention has the beneficial effects as follows:
1, the basic pipe fitting of tester of the present invention is directly installed in Road System, not that traditional sample by measuring core or making obtains infiltration coefficient, the change that the infiltration coefficient can monitoring real same some place on porous pavement in for many years affects along with Particle Blocking, rainfall and cleaning etc.;
2, tester structure of the present invention and maintenance are all very simple, and measure pipe fitting and can install rapidly in use, can pull down when not using, the top end face of basic pipe fitting is concordant with the upper surface of Road System, does not affect the normal use of Road System;
3, because basic pipe fitting of the present invention is positioned at the inside of Road System, measure pipe fitting dismountable after measurement completes, all can not be subject to invasion and attack such as exposing to the weather, long service life;
4, method of testing of the present invention is simple to operate, result accurately and reliably, for the optimal design of porous pavement and maintenance process and choosing of opportunity provide foundation.
Accompanying drawing explanation
Fig. 1 is the structural representation of Road System in the embodiment of the present invention one, basic pipe fitting, measurement pipe fitting and coupling pipe elements;
Fig. 2 is the structural representation of Road System in the embodiment of the present invention two, basic pipe fitting, measurement pipe fitting and coupling pipe elements;
Fig. 3 is the structural representation after installing shutoff pipe fitting in the embodiment of the present invention;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the one-piece construction schematic diagram of the embodiment of the present invention.
In figure: 1 porous pavement, 2 permeable roadbeds, 3 compacting original soils, 4 basic pipe fittings, 5 measure pipe fitting, 6 coupling pipe elements, 7 overflow vents, 8 shutoff pipe fittings, 9 water pumps, 10 reserve tanks, 11 valves, 12 flowmeters, 13 rising pipes.
Embodiment
Below in conjunction with Figure of description and specific embodiment, the invention will be further described:
Embodiment one:
As shown in Figure 1, shown in Figure 5.Porous pavement system infiltration coefficient in-situ test instrument, comprises Road System, and described Road System comprises porous pavement 1, permeable roadbed 2 and compacting original soil 3 from top to bottom successively, also comprises basic pipe fitting 4, measures pipe fitting 5 and water system; What described basic pipe fitting 4 was vertical is installed in Road System, and the measurement bottom of pipe fitting 5 and the top of basic pipe fitting 4 are connected; Described water system comprises rising pipe 13, and rising pipe 13 for supplying water in measurement pipe fitting 5, and rising pipe 13 is provided with valve 11 and flowmeter 12.
As Fig. 1, the end face of described basic pipe fitting 4 bottom is above compacting original soil 3 and and have gap between the upper surface of compacting original soil 3.The water infiltrated when to leave described gap be to measure can be drained, and the width h in gap is 2cm.
The top end face of described basic pipe fitting 4 is concordant with the upper surface of described Road System, and the connection between described measurement pipe fitting 5 and basic pipe fitting 4 is for removably connecting.When not measuring, measuring pipe fitting 5 can dismantle, and now the top end face of basic pipe fitting 4 is concordant with the upper surface of Road System, does not affect the normal use of Road System.
The top measuring pipe fitting 5 sidewall is provided with overflow vent 7.Be provided with overflow vent 7, more convenient to operate when testing, improve the accuracy of result.
The bottom of described measurement pipe fitting 5 is nested with in the outside on basic pipe fitting 4 top, and the inside surface measuring pipe fitting 5 sidewall coordinates with the intimate of basic pipe fitting 4 sidewall.Both are nested with when can effectively avoid testing, and water is from basic pipe fitting 4 and the gap outflow of measuring pipe fitting 5 cooperation place, and the mode of connection can be grafting, also can for being threaded.Measurement pipe fitting 5 is nested with in the outside of basic pipe fitting 4, guarantees that tested point discharge section area is consistent, ensure the accuracy of result.
The arranged outside of described basic pipe fitting 4 has the coupling pipe elements 6 with basic pipe fitting 4 coaxial cable, is provided with the annular groove holding and measure pipe fitting 5 between coupling pipe elements 6 and basic pipe fitting 4; When measuring, measure pipe fitting 5 and be plugged in described annular groove, as shown in Figure 3, Figure 4, when not measuring, shutoff pipe fitting 8 is inserted annular groove and is sealed.Arrange coupling pipe elements 6, can be convenient for measuring pipe fitting 5 Fast Installation in use, when not using measurement pipe fitting 5, pulled down and use shutoff pipe fitting 8 to be sealed by annular groove, one is the smooth of maintenance road surface, does not affect the use on road surface; Two is avoid foreign material to enter annular groove.
As Fig. 5, described water system also comprises aqua storage tank 10 and water pump 9, and water pump 9 is positioned at the inside of aqua storage tank 10; Described rising pipe 13 one end is connected with water pump 9, and the other end is positioned at the top of described measurement pipe fitting 5.Supplied water by aqua storage tank 10 and water pump 9, be convenient to mount and dismount whenever and wherever possible, cost is low, moves and installs and removes all very convenient.
Basic pipe fitting 4 of the present invention can adopt UPVC pipe, pvc pipe or steel pipe, and its internal diameter d is 200mm.
The method of testing of porous pavement system infiltration coefficient in-situ test instrument, comprises the following steps:
Step 1): installation foundation pipe fitting: when basic pipe fitting 4 adopts UPVC pipe or pvc pipe, basic pipe fitting 4 is synchronously imbedded Road System with construction, what material (such as stone or concrete) is used in Road System construction, just inside basic pipe fitting 4, put into identical material, also pass through corresponding compacting operation.When basic pipe fitting 4 adopts steel pipe, after Road System construction terminates, basic pipe fitting 4 is squeezed into Road System.
The benefit adopting steel pipe to squeeze into Road System is installed after construction completes again, and do not affect pavement construction.
Step 2): install and measure pipe fitting: top measurement pipe fitting 5 being arranged on basic pipe fitting 4.The internal diameter measuring pipe fitting 5 is equal with the external diameter of basic pipe fitting 4, is not arranged on road surface, only just installs when needs are measured when measurement pipe fitting 5 is flat.
Step 3): obtain seepage flow flow: supplied water in measurement pipe fitting 5 by rising pipe 13, adjust output by valve 11, make the water surface reach overflow vent 7 and keep not having the state of water overflow, now the reading of flowmeter 12 is seepage flow flow.For ensureing the accuracy of result, seepage flow flow gets the mean value in flowmeter 120 minutes.
Step 4): obtain seepage coefficient: described seepage flow flow, divided by the discharge section area of basic pipe fitting 4, obtains the seepage coefficient of Road System.In the present embodiment, the discharge section area of basic pipe fitting 4 is π × (d/2)
2.
Step 5): after having measured, measurement pipe fitting 5 is pulled down, shutoff pipe fitting 8 is inserted annular groove, measure in order to next time.
The present embodiment is for measuring the infiltration coefficient of the cascade system of porous pavement 1 and permeable roadbed 2.
Embodiment two:
As shown in Figure 2, the feature that the present embodiment is identical with embodiment one repeats no more, and the present embodiment feature different from embodiment one is: the end face of described basic pipe fitting 4 bottom is concordant with the lower surface of porous pavement 1.
The present embodiment is used for the simple infiltration coefficient measuring porous pavement 1.
In above-described embodiment, tester is provided with overflow vent 7, if do not arrange overflow vent 7, when testing, needing the amount supplied water by valve 11 adjustment, making the water surface just arrive the upper surface measuring pipe fitting 5, but the state that maintenance does not have water to overflow, obtain seepage flow flow.May be there is multiple EXIT POINT due to the coboundary measuring pipe fitting 5 in this kind of mode, be not easy to the observation of operator, may increase error.
In above-described embodiment, basis pipe fitting 4, measurement pipe fitting 5, coupling pipe elements 6 and shutoff pipe fitting 8 all adopt pipe, but the shape of above-mentioned pipe fitting is not limited to pipe in the present invention, when adopting cross section to be the pipe fitting of other shapes, the structure of tester and the principle of method of testing same as the previously described embodiments, cross section based on pipe does not have corner angle, is convenient to coordinate and batch production, and therefore pipe is preferred embodiment.
The foregoing is only preferred embodiment of the present invention; be not whole embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Except technical characteristic described in instructions, all the other technical characteristics are those skilled in the art's known technology, and in order to outstanding innovative characteristics of the present invention, above-mentioned technical characteristic does not repeat them here.
Claims (10)
1. porous pavement system infiltration coefficient in-situ test instrument, comprises Road System, and described Road System comprises porous pavement, permeable roadbed and compacting original soil from top to bottom successively, it is characterized in that, also comprises basic pipe fitting, measures pipe fitting and water system; What described basic pipe fitting was vertical is installed in Road System, and the measurement bottom of pipe fitting and the top of basic pipe fitting are connected; Described water system comprises rising pipe, and rising pipe is used for supplying water in measurement pipe fitting, and rising pipe is provided with valve and flowmeter.
2. porous pavement system infiltration coefficient in-situ test instrument according to claim 1, is characterized in that, the end face of described basic pipe fitting bottom is above compacting original soil and and have gap between the upper surface of compacting original soil.
3. porous pavement system infiltration coefficient in-situ test instrument according to claim 1, is characterized in that, the end face of described basic pipe fitting bottom is concordant with the lower surface of porous pavement.
4. the porous pavement system infiltration coefficient in-situ test instrument according to Claims 2 or 3, it is characterized in that, the top end face of described basic pipe fitting is concordant with the upper surface of described Road System, and the connection between described measurement pipe fitting and basic pipe fitting is for removably connecting.
5. porous pavement system infiltration coefficient in-situ test instrument according to claim 1, is characterized in that, the top of described measurement pipe fitting sidewall is provided with overflow vent.
6. porous pavement system infiltration coefficient in-situ test instrument according to claim 1, is characterized in that, the bottom of described measurement pipe fitting is nested with in the outside of basic tubular top, and the inside surface measuring pipe fitting sidewall coordinates with the intimate of basic pipe fitting sidewall.
7. porous pavement system infiltration coefficient in-situ test instrument according to claim 1, it is characterized in that, the arranged outside of described basic pipe fitting has the coupling pipe elements with basic pipe fitting coaxial cable, is provided with the annular groove holding and measure pipe fitting between coupling pipe elements and basic pipe fitting; When measuring, measure pipe fitting and be plugged in described annular groove, when not measuring, shutoff pipe fitting is inserted annular groove and is sealed.
8. porous pavement system infiltration coefficient in-situ test instrument according to claim 1, it is characterized in that, described water system also comprises aqua storage tank and water pump, and water pump is positioned at the inside of aqua storage tank; Described rising pipe one end is connected with water pump, and the other end is positioned at the top of described measurement pipe fitting.
9. utilize the porous pavement system infiltration coefficient in-situ test instrument described in claim 5 to carry out the method for testing of testing, it is characterized in that, supply water in measurement pipe fitting, adjustment output, make the water surface reach overflow vent and keep not having the state of water overflow, now the reading of flowmeter is seepage flow flow; Described seepage flow flow, divided by the discharge section area of basic pipe fitting, obtains the seepage coefficient of Road System.
10. method of testing according to claim 9, is characterized in that, described seepage flow flow gets the mean value of reading in flowmeter a period of time.
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Cited By (10)
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| CN105510208A (en) * | 2016-02-03 | 2016-04-20 | 南京林业大学 | Method for testing permeating property of draining asphalt pavement |
| CN106769786A (en) * | 2017-02-16 | 2017-05-31 | 河海大学 | A kind of portable coarse-grained soil original position permeability test method |
| CN107314962A (en) * | 2016-04-26 | 2017-11-03 | 山东科技大学 | The permeable instrument in porous pavement scene and on-site measurement method |
| CN107421867A (en) * | 2017-07-03 | 2017-12-01 | 东南大学 | A kind of porous asphalt concrete water permeability test device and its method of testing |
| CN108051358A (en) * | 2017-12-15 | 2018-05-18 | 东南大学 | A kind of device and its method of work for accurate measurement soil body osmotic coefficient |
| CN108663299A (en) * | 2018-04-20 | 2018-10-16 | 中国电建集团贵阳勘测设计研究院有限公司 | In-situ horizontal penetration test method for concrete faced rockfill dam |
| CN110296930A (en) * | 2019-07-24 | 2019-10-01 | 平顶山市公路交通勘察设计院 | A kind of device and test method of on-site measurement porous pavement infiltration coefficient |
| CN111893836A (en) * | 2020-06-29 | 2020-11-06 | 河海大学 | Self-cleaning pervious concrete structure and preparation method thereof |
| CN112595642A (en) * | 2020-06-29 | 2021-04-02 | 北京仁创科技集团有限公司 | Water permeability detection device and detection method |
| CN113237813A (en) * | 2021-05-10 | 2021-08-10 | 天津市政工程设计研究总院有限公司 | Device and method for testing sponge city effects of different permeable road structures |
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| CN105510208A (en) * | 2016-02-03 | 2016-04-20 | 南京林业大学 | Method for testing permeating property of draining asphalt pavement |
| CN105510208B (en) * | 2016-02-03 | 2018-02-09 | 南京林业大学 | A kind of permeance property method of testing of drainage asphalt pavement |
| CN107314962A (en) * | 2016-04-26 | 2017-11-03 | 山东科技大学 | The permeable instrument in porous pavement scene and on-site measurement method |
| CN106769786B (en) * | 2017-02-16 | 2019-03-22 | 河海大学 | A kind of portable coarse-grained soil original position permeability test method |
| CN106769786A (en) * | 2017-02-16 | 2017-05-31 | 河海大学 | A kind of portable coarse-grained soil original position permeability test method |
| CN107421867B (en) * | 2017-07-03 | 2019-11-12 | 东南大学 | A kind of porous asphalt concrete water permeability test device and its test method |
| CN107421867A (en) * | 2017-07-03 | 2017-12-01 | 东南大学 | A kind of porous asphalt concrete water permeability test device and its method of testing |
| CN108051358A (en) * | 2017-12-15 | 2018-05-18 | 东南大学 | A kind of device and its method of work for accurate measurement soil body osmotic coefficient |
| CN108051358B (en) * | 2017-12-15 | 2020-06-16 | 东南大学 | Device for accurately measuring permeability coefficient of soil body and working method thereof |
| CN108663299A (en) * | 2018-04-20 | 2018-10-16 | 中国电建集团贵阳勘测设计研究院有限公司 | In-situ horizontal penetration test method for concrete faced rockfill dam |
| CN110296930A (en) * | 2019-07-24 | 2019-10-01 | 平顶山市公路交通勘察设计院 | A kind of device and test method of on-site measurement porous pavement infiltration coefficient |
| CN111893836A (en) * | 2020-06-29 | 2020-11-06 | 河海大学 | Self-cleaning pervious concrete structure and preparation method thereof |
| CN112595642A (en) * | 2020-06-29 | 2021-04-02 | 北京仁创科技集团有限公司 | Water permeability detection device and detection method |
| CN111893836B (en) * | 2020-06-29 | 2021-11-12 | 河海大学 | Self-cleaning pervious concrete structure and preparation method thereof |
| CN113237813A (en) * | 2021-05-10 | 2021-08-10 | 天津市政工程设计研究总院有限公司 | Device and method for testing sponge city effects of different permeable road structures |
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