CN209992354U - Permeable pavement permeability coefficient fixed-point monitoring device based on double-ring method - Google Patents
Permeable pavement permeability coefficient fixed-point monitoring device based on double-ring method Download PDFInfo
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- CN209992354U CN209992354U CN201920515336.XU CN201920515336U CN209992354U CN 209992354 U CN209992354 U CN 209992354U CN 201920515336 U CN201920515336 U CN 201920515336U CN 209992354 U CN209992354 U CN 209992354U
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Abstract
The utility model discloses a permeable pavement permeability coefficient fixed-point monitoring device based on a double-ring method, which comprises an inner test ring, an outer test ring and a water injection mechanism, wherein the inner test ring is positioned in the outer test ring; the inner test ring is formed by connecting a foundation inner ring and a measurement inner ring, the outer test ring is formed by connecting a foundation outer ring and a measurement outer ring, and the foundation inner ring and the foundation outer ring are both pre-embedded in the road surface; measure and be equipped with first water level inductor and the second water level inductor of being connected with first valve on the inner wall of inner ring, measure outer loop inner wall upper portion and be equipped with third water level inductor and the fourth water level inductor of being connected with the second valve, water injection mechanism includes the ponding container, first water injection pipe and second water injection pipe, the ponding container is through first water injection pipe and second water injection pipe water injection respectively to interior examination ring sum outer examination ring, install first valve and flowmeter on the first water injection pipe, install the second valve on the second water injection pipe. The device simple structure can accurate survey permeable pavement's osmotic coefficient to can realize accurate fixed point long-term monitoring.
Description
Technical Field
The utility model belongs to the technical field of civil engineering, concretely relates to permeable pavement osmotic coefficient fixed point monitoring devices based on dicyclo method, the device can be used to the change of on-the-spot fixed point monitoring permeable pavement osmotic coefficient.
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 number of potential blockage sources generally exist at the periphery of the permeable pavement, and in the rainfall runoff and infiltration process, the blockage 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.
SL 345-2007 specification of water injection test for hydraulic and hydroelectric engineering introduces two in-situ test methods for determining permeability coefficient of soil layer, namely a single-ring water injection test and a double-ring water injection test, and some scholars apply the two methods to the in-situ permeability coefficient test of a permeable pavement, and utilize the principle of a single-ring method: CN207366409U A permeability coefficient determinator and CN107314962A permeable pavement site permeability instrument and site measurement method utilize the principle of a double-ring method: CN207557065U in-situ detector for permeability coefficient of permeable pavement, and CN106769761A in-situ method and device for measuring permeability coefficient of permeable concrete. Compared with the single-ring method, the seepage field generated by the outer ring water head of the double-ring method can ensure that water in the inner ring vertically infiltrates downwards at a certain depth, but the measured permeability coefficient is actually the permeability coefficient of the permeable pavement with smaller thickness. In addition, because the device is directly placed on the road surface by the above patent, the uneven surface of the permeable pavement causes that the complicated contact surface water leakage prevention work needs to be done before the test.
Disclosure of Invention
In order to solve the problems existing in the prior art, the utility model provides a permeable pavement permeability coefficient fixed point monitoring devices based on two ring methods, the device simple structure, convenient operation can guarantee that the internal test ring flood peak has sufficient vertical infiltration degree of depth with the accurate determination permeable pavement's permeability coefficient to can realize accurate fixed point long-term monitoring.
Realize the utility model discloses the technical scheme that above-mentioned purpose adopted does:
a permeable pavement permeability coefficient fixed-point monitoring device based on a double-ring method comprises an inner test ring, an outer test ring and a water injection mechanism, wherein the inner test ring and the outer test ring are coaxially arranged, and the inner test ring is positioned in the outer test ring;
the inner test ring is formed by connecting a foundation inner ring and a measurement inner ring, the top of the foundation inner ring and the bottom of the measurement inner ring are in detachable sealing connection, the outer test ring is formed by connecting a foundation outer ring and a measurement outer ring, the top of the foundation outer ring and the bottom of the measurement outer ring are in detachable sealing connection, and the foundation inner ring and the foundation outer ring are both pre-embedded in a road surface;
a first water level sensor and a second water level sensor are arranged at the upper part of the inner wall of the measuring inner ring, the water level sensed by the second water level sensor is lower than that sensed by the first water level sensor, and the difference between the water levels sensed by the first water level sensor and the second water level sensor is within 5 mm;
a third water level sensor and a fourth water level sensor are arranged at the upper part of the inner wall of the measuring outer ring, the water level sensed by the fourth water level sensor is lower than that sensed by the third water level sensor, and the difference between the water levels sensed by the third water level sensor and the fourth water level sensor is within 5 mm;
the water injection mechanism comprises a water accumulation container, a first water injection pipe and a second water injection pipe, the water accumulation container injects water into the inner test ring through the first water injection pipe, the water accumulation container injects water into the outer test ring through the second water injection pipe, the first water injection pipe is provided with a first valve and a flowmeter, and the second water injection pipe is provided with a second valve;
the first water level sensor and the second water level sensor are respectively connected with the first valve, and the third water level sensor and the fourth water level sensor are respectively connected with the second valve.
The measuring inner ring is characterized in that a first annular groove is formed in the top of the base inner ring, a first annular bulge is arranged on the bottom of the measuring inner ring and is connected with the first annular groove in a matched mode, a second annular groove is formed in the top of the base outer ring, a second annular bulge is arranged on the bottom of the measuring outer ring, and the second annular bulge is connected with the second annular groove in a matched mode.
And rubber rings are arranged on the inner walls of the first annular groove and the second annular groove.
The bottom of the foundation inner ring is flush with the bottom of the foundation outer ring, and the tops of the foundation inner ring and the foundation outer ring are flush with the upper surface of the permeable pavement.
The inner diameters of the foundation inner ring and the measuring inner ring are the same, the outer diameters of the foundation inner ring and the measuring inner ring are the same, the inner diameters of the foundation outer ring and the measuring outer ring are the same, the outer diameters of the foundation outer ring and the measuring outer ring are the same, and the heights of the inner test ring and the outer test ring are the same.
The top of the water injection container is opened.
Compared with the prior art, the beneficial effects and advantages of the utility model reside in that:
1. the device's basic test ring adopts recess and protruding complex mode in close combination with measuring the test ring, and basic test ring inner wall is equipped with the rubber circle that is used for extrusion sealing moreover, can prevent to leak betterly.
2. The foundation inner ring and the foundation outer ring of the device are both provided with a certain burial depth, and the seepage flow field generated by the outer ring water head can ensure that water of the inner ring vertically infiltrates downwards in a certain depth, so that the inner ring water head can be ensured to have enough vertical infiltration depth to accurately measure the permeability coefficient of the permeable pavement with a certain thickness.
3. The basic test ring of the device is synchronously installed in the road surface during construction, the change of the permeability coefficient of the same position on the permeable road surface along with the influences of particle blockage, dry-wet circulation, cleaning and the like can be monitored for a long time, real fixed-point long-term monitoring is realized, the permeable road surface permeability coefficient attenuation rule is accurately discussed, and the permeable road surface long-term operation effect is evaluated.
4. The inner walls of the inner ring and the outer ring of the device are provided with water level sensors, and the water level in the test ring can be well maintained to be stable through the water level sensors.
Drawings
Fig. 1 is a schematic structural diagram of a permeable pavement permeability coefficient fixed-point monitoring device based on a double-ring method.
Fig. 2 is a schematic view of the connection of the base inner ring and the measurement inner ring.
The road surface measuring device comprises a base inner ring 1, a measuring inner ring 2, a first annular groove 3, a first annular protrusion 4, a base outer ring 5, a measuring outer ring 6, a water accumulation container 7, a first water injection pipe 8, a second water injection pipe 9, a first valve 10, a flowmeter 11, a second valve 12, a first water level sensor 13, a second water level sensor 14, a third water level sensor 15, a fourth water level sensor 16, a rubber ring 17 and a road surface 18.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a permeable pavement permeability coefficient fixed point monitoring devices based on dicyclo method's structure is shown as in figure 1, including interior examination ring, outer examination ring and water injection mechanism.
The inner test ring and the outer test ring are coaxially arranged, the inner test ring is positioned in the outer test ring, and the inner test ring and the outer test ring are the same in height.
The inner test ring comprises a foundation inner ring 1 and a measurement inner ring 2, the inner diameters of the foundation inner ring 1 and the measurement inner ring 2 are the same, and the outer diameters of the foundation inner ring 1 and the measurement inner ring 2 are the same. First annular groove 3 has been seted up on the basis inner ring 1 top, is equipped with rubber circle 17 in the first annular groove 3, is equipped with first annular arch 4 on measuring the inner ring 2 bottom, and first annular arch 4 inserts in first annular groove 3, and basis inner ring 1 top is connected through first annular arch 4 and first annular groove 3 with measuring inner ring 2 bottom to further seal through the rubber circle.
The inner wall of the measuring inner ring 2 is provided with a first water level sensor 13 and a second water level sensor 14, the water level sensed by the second water level sensor 14 is lower than the water level sensed by the first water level sensor 13, and the water level difference sensed by the first water level sensor 13 and the second water level sensor 14 is within 5 mm.
When the water level in the measuring inner ring 2 reaches the preset sensing water level of the first water level sensor 13, the first water level sensor 13 sends a water supply stop signal to the first valve 10, and when the water level is reduced to the preset sensing water level of the second water level sensor 14, the second water level sensor 14 sends a water supply recovery signal to the first valve 10.
The outer test ring comprises a base outer ring 5 and a measuring outer ring 6, the inner diameters of the base outer ring 5 and the measuring outer ring 6 are the same, and the outer diameters of the base outer ring 5 and the measuring outer ring 6 are the same. The second annular groove has been seted up on 5 tops of basic outer loop, is equipped with the rubber circle in the second annular groove, measures to be equipped with the second annular arch on 6 bottoms of outer loop, and the second annular arch inserts in the second annular groove, and 5 tops of basic outer loop are passed through the protruding and second annular groove connection of second annular with 6 bottoms of measurement outer loop to further seal through the rubber circle.
The inner wall of the outer ring is provided with a third water level sensor 15 and a fourth water level sensor 16, the water level sensed by the fourth water level sensor 15 is lower than the water level sensed by the third water level sensor 16, and the water level difference sensed by the third water level sensor 15 and the fourth water level sensor 16 is within 5 mm.
When the water level in the measuring outer ring 6 reaches the preset sensing water level of the third water level sensor 15, the third water level sensor 15 sends a water supply stop signal to the second valve 12, and when the water level is lowered to the preset sensing water level of the fourth water level sensor 16, the fourth water level sensor 16 sends a water supply recovery signal to the second valve 12.
When 18 construction on road surface, all pre-buried in 18 in road surface with basic inner ring 1 and basic outer loop 5, basic inner ring 1 bottom flushes with basic outer loop 5 bottom, and basic inner ring 1 and basic outer loop 5's top all flushes with permeable pavement's upper surface. When the measurement is not carried out, the annular blocking head matched with the first annular groove 3 can be inserted into the first annular groove 3 to seal the first annular groove, and the annular blocking head matched with the second annular groove is inserted into the second annular groove to seal the second annular groove, so that sundries are prevented from entering the first annular groove 3 and the second annular groove, and the road surface is guaranteed to be smooth.
The water injection mechanism comprises a water accumulation volume 7, a first water injection pipe 8 and a second water injection pipe 9. The top of the water accumulation container 7 is opened, so that water can be conveniently added at any time. The ponding container 7 injects water into the internal test ring through the first water injection pipe 8, the ponding container 7 injects water into the external test ring through the second water injection pipe 9, the first valve 10 and the flowmeter 11 are installed on the first water injection pipe 7, and the second valve 12 is installed on the second water injection pipe 9.
The double-ring water injection test is carried out by using the device, and the steps are as follows:
1) the plugging rings in the first annular groove 3 and the second annular groove are taken down, the first annular bulge 4 is inserted into the first annular groove 3, and the second annular bulge is inserted into the second annular groove;
2) fixing the position of the water accumulation container 7 by using a bracket, filling the water accumulation container 7 with water, opening and adjusting a first valve 10 and a second valve 12, respectively filling water into the measuring inner ring 2 and the measuring outer ring 6, and ensuring that the water filling speed of the second water filling pipe 9 is slightly higher than that of the first water filling pipe 8;
3) when the water level of the outer ring 6 reaches the preset induction water level (100 mm higher than the upper surface of the tested road surface) of the third water level sensor 15, the third water level sensor 15 sends a water supply stopping signal to the second valve 12, and when the water level is reduced to the preset induction water level of the fourth water level sensor 16, the fourth water level sensor 16 sends a water supply restoring signal to the second valve 12, and the process is repeated, so that the water level in the outer ring 6 can be basically controlled and measured to be stable because the difference between the water levels induced by the third water level sensor 15 and the fourth water level sensor 16 is small;
when the water level of the measuring inner ring 2 reaches the preset sensing water level (100 mm higher than the upper surface of the test road surface) of the first water level sensor 13, the first water level sensor 13 sends a signal to the first valve 10 to control the first valve to stop supplying water, at the moment, timing is started, when the water level is reduced to the preset sensing water level of the second water level sensor 14, the second water level sensor 14 sends a water supply recovery signal to the first valve 10, and the cycle is repeated, so that the water level in the measuring inner ring 2 can be basically controlled to be stable because the difference between the water levels sensed by the first water level sensor 13 and the second water level sensor 14 is small;
4) measuring the water seepage volume for 1 time by a flowmeter every 10 minutes, and continuously measuring for at least 10 times, wherein in the process, when the water in the water accumulation container 7 is less, water can be added into the water accumulation container 7 at any time;
5) recording the accumulated volume flow reading of the flowmeter 11 at each time node, calculating the water seepage volume measured every 1 time by difference, finishing the test when the difference of the water seepage volumes measured for 2 times is not more than 10% of the water seepage volume measured for the last time, and taking the water seepage volume measured for the last time as a calculated value;
6) the permeability coefficient of the permeable pavement paving layer is calculated according to the following formula:
in the formula: k is the permeability coefficient of the permeable pavement paving layer, and is cm/min; a is the area of the inner diameter of the foundation inner ring 1 in cm2(ii) a t is the last measurement duration, min; q is the water seepage volume measured at the last time, cm3；
After the pavement was put into service, it was tested 1 time every 2 months.
Claims (6)
1. The utility model provides a permeable pavement permeability coefficient fixed point monitoring devices based on dicyclo method which characterized in that: the water injection device comprises an inner test ring, an outer test ring and a water injection mechanism, wherein the inner test ring and the outer test ring are coaxially arranged, and the inner test ring is positioned in the outer test ring;
the inner test ring is formed by connecting a foundation inner ring and a measurement inner ring, the top of the foundation inner ring and the bottom of the measurement inner ring are in detachable sealing connection, the outer test ring is formed by connecting a foundation outer ring and a measurement outer ring, the top of the foundation outer ring and the bottom of the measurement outer ring are in detachable sealing connection, and the foundation inner ring and the foundation outer ring are both pre-embedded in a road surface;
a first water level sensor and a second water level sensor are arranged at the upper part of the inner wall of the measuring inner ring, the water level sensed by the second water level sensor is lower than that sensed by the first water level sensor, and the difference between the water levels sensed by the first water level sensor and the second water level sensor is within 5 mm;
a third water level sensor and a fourth water level sensor are arranged at the upper part of the inner wall of the measuring outer ring, the water level sensed by the fourth water level sensor is lower than that sensed by the third water level sensor, and the difference between the water levels sensed by the third water level sensor and the fourth water level sensor is within 5 mm;
the water injection mechanism comprises a water accumulation container, a first water injection pipe and a second water injection pipe, the water accumulation container injects water into the inner test ring through the first water injection pipe, the water accumulation container injects water into the outer test ring through the second water injection pipe, the first water injection pipe is provided with a first valve and a flowmeter, and the second water injection pipe is provided with a second valve;
the first water level sensor and the second water level sensor are respectively connected with the first valve, and the third water level sensor and the fourth water level sensor are respectively connected with the second valve.
2. The permeable pavement permeability coefficient fixed-point monitoring device based on the double-ring method according to claim 1, characterized in that: the measuring inner ring is characterized in that a first annular groove is formed in the top of the base inner ring, a first annular bulge is arranged on the bottom of the measuring inner ring and is connected with the first annular groove in a matched mode, a second annular groove is formed in the top of the base outer ring, a second annular bulge is arranged on the bottom of the measuring outer ring, and the second annular bulge is connected with the second annular groove in a matched mode.
3. The permeable pavement permeability coefficient fixed-point monitoring device based on the double-ring method according to claim 2, characterized in that: and rubber rings are arranged on the inner walls of the first annular groove and the second annular groove.
4. The permeable pavement permeability coefficient fixed-point monitoring device based on the double-ring method according to claim 1, characterized in that: the bottom of the foundation inner ring is flush with the bottom of the foundation outer ring, and the tops of the foundation inner ring and the foundation outer ring are flush with the upper surface of the permeable pavement.
5. The permeable pavement permeability coefficient fixed-point monitoring device based on the double-ring method according to claim 4, characterized in that: the inner diameters of the foundation inner ring and the measuring inner ring are the same, the outer diameters of the foundation inner ring and the measuring inner ring are the same, the inner diameters of the foundation outer ring and the measuring outer ring are the same, the outer diameters of the foundation outer ring and the measuring outer ring are the same, and the heights of the inner test ring and the outer test ring are the same.
6. The permeable pavement permeability coefficient fixed-point monitoring device based on the double-ring method according to claim 1, characterized in that: the top of the water accumulation container is opened.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272634A (en) * | 2020-03-13 | 2020-06-12 | 河海大学 | Permeable pavement permeability coefficient on-site measurement device and method |
| CN112945772A (en) * | 2021-02-01 | 2021-06-11 | 中国电建集团成都勘测设计研究院有限公司 | Engineering rock body mechanical property analysis method under water rock circulation |
-
2019
- 2019-04-16 CN CN201920515336.XU patent/CN209992354U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272634A (en) * | 2020-03-13 | 2020-06-12 | 河海大学 | Permeable pavement permeability coefficient on-site measurement device and method |
| CN112945772A (en) * | 2021-02-01 | 2021-06-11 | 中国电建集团成都勘测设计研究院有限公司 | Engineering rock body mechanical property analysis method under water rock circulation |
| CN112945772B (en) * | 2021-02-01 | 2024-03-19 | 中国电建集团成都勘测设计研究院有限公司 | Method for analyzing mechanical properties of engineering rock mass under water-rock circulation |
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