Novel sponge integrated construction facility for rainwater storage and stagnation

Abstract

The utility model relates to the technical field of rainwater storage and stagnation, and particularly discloses a novel sponge integrated construction facility for rainwater storage and stagnation, which comprises a rainwater infiltration and stagnation system, a rainwater storage and stagnation system and a sponge integrated construction system, the rainwater collecting system comprises a rainwater collecting floral tube embedded in the seepage layer, and a plurality of through holes are uniformly formed in the surface of the rainwater collecting floral tube; the rainwater regulation, storage and drainage system comprises a small infiltration chamber communicated with the floral tube, a small overflow chamber capable of being communicated with the small infiltration chamber and a water collection branch pipe communicated with the small overflow chamber, and an overflow weir is arranged between the small infiltration chamber and the small overflow chamber. Therefore, the problems of large urban rainwater runoff volume, low rainwater utilization rate and the like at present are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of rainwater storage and retention, and specifically discloses a novel sponge-integrated structure facility for rainwater storage and retention. Background Art

[0002] Collecting rainwater and implementing soil infiltration is a common way to utilize rainwater. Traditional facilities are brick-built infiltration wells with holes in the side walls or reinforced concrete infiltration pools with holes in the side walls. Brick-built infiltration wells waste land resources and are time-consuming and labor-intensive to build. Reinforced concrete infiltration pools are expensive and difficult to build. When the pool is dismantled for some reason, it is difficult to dismantle it, and the discarded concrete blocks form construction waste, polluting the environment.

[0003] With the continuous acceleration of urbanization, the impervious area of ​​urban built-up areas has increased significantly, the original plant interception and evaporation, and ground infiltration have decreased, and the traditional road drainage system can no longer play a good role in urban rainwater storage. At present, most cities have adopted sponge cities to store rainwater on urban roads. Among them, sponge cities mainly refer to the use of various technical approaches such as "infiltration, retention, storage, purification, use, and discharge" to achieve a benign urban hydrological cycle, improve the infiltration, regulation, purification, utilization and discharge capabilities of runoff rainwater, and maintain or restore the sponge function of the city.

[0004] Then, the current methods and measures for realizing ecological sponge cities are relatively simple, and the current drainage structure cannot achieve comprehensive and effective stormwater management for different rainfalls, resulting in the still widespread problems of large urban rainwater runoff and low rainwater utilization rate. Therefore, in view of this, the inventor provides a new type of rainwater storage sponge integrated structure facility to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem that the traditional drainage structure cannot realize comprehensive and effective rainwater management for different rainfalls, resulting in large urban rainwater runoff and low rainwater utilization rate.

[0006] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a new type of rainwater storage sponge integrated structure facility, including:

[0007] A rainwater infiltration system, including a sunken facility belt and a number of infiltration layers arranged at the bottom of the sunken facility belt;

[0008] A rainwater collection system comprises a rainwater collection tube buried in the seepage layer, wherein a plurality of perforations are evenly arranged on the surface of the rainwater collection tube;

[0009] The rainwater storage and discharge system comprises an infiltration chamber connected with a flower pipe, an overflow chamber connected with the infiltration chamber and a water receiving branch pipe connected with the overflow chamber, wherein an overflow weir is arranged between the infiltration chamber and the overflow chamber.

[0010] Furthermore, the particles filled in the stagnant layer are any one of pebbles, gravels, crushed stones from construction waste or volcanic rocks, and the diameters of the particles filled in the stagnant layer increase from top to bottom.

[0011] Furthermore, the infiltration chamber is arranged under the road and the end of the rainwater collecting flower tube is communicated with the bottom of the side wall of the infiltration chamber, and an end cover is arranged on the top of the infiltration chamber.

[0012] Furthermore, the side wall of the infiltration chamber is provided with a glass fiber reinforced plastic grille that covers the end of the rainwater collection flower pipe.

[0013] Furthermore, the horizontal height of the connection between the rainwater collecting flower pipe and the side wall of the infiltration chamber is lower than the height of the overflow weir.

[0014] Furthermore, it also includes a rainwater quick drainage system, which includes an overflow port arranged at the top of the sunken facility belt, an overflow well arranged below the overflow port and a rainwater grate that can be connected to the overflow well, a drainage pipe is provided between the overflow well and the rainwater grate, and the side wall of the rainwater grate is also connected to a water collection branch pipe.

[0015] Furthermore, the infiltration chambers are a plurality of stepped chambers and are all in communication with the overflow chambers.

[0016] The principle and effect of this scheme are:

[0017] During light rain, the utility model can collect rainwater through the sunken facility belt, and filter and purify the rainwater through multiple seepage layers. The filtered and purified rainwater enters the infiltration chamber through the rainwater collecting flower tube for storage. If the rainfall exceeds the storage capacity of the infiltration well, the excess rainfall enters the overflow chamber of the infiltration well through the overflow weir, and then is discharged to the municipal pipe network through the water collection branch pipe; during heavy rain, the amount of rainwater in the sunken facility belt exceeds the storage capacity, the rainwater enters the overflow well through the overflow port, and is discharged to the municipal pipe network through the rainwater grate and the water collection branch pipe, thereby realizing the rapid discharge of urban rainwater; on sunny days, the rainwater in the infiltration chamber is reused for watering the plants in the sunken facility through the transpiration of plants and soil, thereby realizing the functions of storing, retaining, purifying, using and discharging rainwater, that is, the utility model can realize comprehensive and effective rainwater and flood management for different rainfalls, thereby effectively solving the current problems of large urban rainwater runoff and low rainwater utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of a novel rainwater storage sponge integrated structure facility proposed in an embodiment of the present application is shown;

[0020] Figure 2 A schematic diagram of the structure of a rainwater infiltration system in a novel rainwater storage sponge integrated structure facility proposed in an embodiment of the present application is shown;

[0021] Figure 3 A schematic diagram of the structure of an infiltration chamber in a novel rainwater storage sponge integrated structure facility proposed in an embodiment of the present application is shown;

[0022] Figure 4 A top view of the connection structure between the infiltration chamber and the overflow chamber in a novel rainwater storage sponge integrated structure facility proposed in an embodiment of the present application is shown;

[0023] Figure 5 A schematic diagram of the connection structure between the infiltration chamber and the overflow chamber in a novel rainwater storage sponge integrated structure facility proposed in an embodiment of the present application is shown;

[0024] Figure 6 A schematic structural diagram of a rainwater quick drainage system in a novel rainwater storage and retention sponge integrated structure facility proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0026] The figure marks in the drawings of the specification include: rainwater infiltration system 1, rainwater quick drainage system 2, rainwater storage and discharge system 3, road 4, end cover 5, infiltration chamber 6, concrete layer 7, edge stone 8, planting soil 9, first pebble layer 10, rainwater collection flower pipe 11, third pebble layer 12, fiberglass grille 13, second pebble layer 14, drainage pipe 15, overflow chamber 16, overflow port 17, rainwater grate 18, water collection branch pipe 19, overflow weir 20, overflow well 21.

[0027] A new type of rainwater storage sponge integrated structure facility, for example Figure 1 As shown, it includes a rainwater infiltration system 1, a rainwater collection system, a rainwater storage and discharge system 3 and a rainwater quick discharge system 2, etc., as follows:

[0028] like Figure 2As shown, the rainwater infiltration system 1 includes a sunken facility belt and several infiltration layers arranged at the bottom of the sunken facility belt, wherein the sunken facility belt is a planting soil 9 with a concave surface at the top and a thickness of 1000mm; the infiltration layer is provided with several layers from top to bottom, which are respectively a first pebble layer 10 with a diameter of 5-15mm and a thickness of 100mm; a second pebble layer 14 with a diameter of 15-25mm and a thickness of 200mm; and a third pebble layer 12 with a diameter of 25-35mm and a thickness of 200mm. Of course, the filling material of the infiltration layer can also be replaced by other building materials with a permeability coefficient greater than 10-6m / s, such as gravel, construction waste crushed stone, volcanic stone and other recycled materials.

[0029] Working principle and use process of 300mm infiltration layer: The first pebble layer 10 with a diameter of 5-15mm and a thickness of 100mm is the base layer, which purifies the rainwater. The purified rainwater enters the second pebble layer 14 with a diameter of 15-25mm and a thickness of 200mm under the action of gravity. The second pebble layer 14 is the water collection layer. The rainwater collecting flower pipe 11 collects the collected rainwater in this layer and guides the rainwater into the infiltration chamber 6. The third pebble layer 12 with a diameter of 25-35mm and a thickness of 200mm is the base fixing layer, which plays a supporting role.

[0030] like Figure 3 and Figure 4 As shown, the rainwater collection system includes a rainwater collection tube 11 buried in the seepage layer, and a plurality of perforations are evenly arranged on the surface of the rainwater collection tube 11; specifically, the rainwater collection tube 11 is a DN50 UPVC pipe, which complies with the standard GB10002.2-2023, and has two rows of perforations, which are arranged at 90 degrees, and the spacing between the perforations in the same row is 150mm, and the two rows of perforations are staggered 75mm intermittently. Due to the two-way collection and transportation of rainwater, the rainwater enters the rainwater collection tube 11 and the infiltration well by gravity on rainy days, and enters the rainwater collection tube 11 from the infiltration well and the pebble layer and finally the soil layer due to the transpiration of plants and the evaporation of soil on sunny days.

[0031] like Figure 3 and Figure 5As shown, the rainwater storage and discharge system 3 includes an infiltration chamber 6 connected to the flower pipe, an overflow chamber 16 that can be connected to the infiltration chamber 6, and a water collecting branch pipe 19 connected to the overflow chamber 16. An overflow weir 20 is provided between the infiltration chamber 6 and the overflow chamber 16. Specifically, the infiltration chamber 6 is arranged below the road 4 and the end of the rainwater collecting flower pipe 11 is connected to the bottom of the side wall of the infiltration chamber 6. The horizontal height of the connection between the rainwater collecting flower pipe 11 and the side wall of the infiltration chamber 6 is lower than the height of the overflow weir 20. The side wall of the infiltration chamber 6 is provided with a glass fiber reinforced plastic grille 13 covering the end of the rainwater collecting flower pipe 11. A concrete layer 7 is poured on the inner wall of the infiltration chamber 6. An end cover 5 is provided on the top of the infiltration chamber 6. The end cover 5 is a ductile iron manhole cover. A curbstone 8 is provided on the top side wall of the infiltration chamber 6. There are several infiltration chambers 6 arranged in steps and all of them are in communication with the overflow chamber 16.

[0032] The elevation setting of overflow weir 20 is calculated according to the following formula:

[0033] W=10φzhyF

[0034] Where:

[0035] W—designed storage capacity (m 3 );

[0036] φz—comprehensive runoff coefficient;

[0037] hy—design rainfall (mm), selected according to the annual runoff control rate requirements;

[0038] F—catchment area (hm 2 ).

[0039] Overflow weir height:

[0040] H= W / F0

[0041] H—Overflow weir height (m)

[0042] W—designed storage capacity (m 3 );

[0043] F0—recessed facility area (m 2 ).

[0044] On rainy days, rainwater collecting tubes 11 enter the infiltration chamber 6 of the infiltration well through rainwater collection. The infiltration chamber 6 serves as a rainwater storage facility until the rainwater collected in the infiltration chamber 6 is full and overflows to the overflow chamber 16 through the overflow weir 20. The overflow chamber 16 is connected to the municipal pipeline through the HDPE pipeline, and the overflow rainwater enters the municipal pipeline. On sunny days, the rainwater stored in the infiltration chamber 6 enters the stagnant layer through the connection of the rainwater collecting tubes 11, and then is reused through the transpiration of plants and the evaporation of soil.

[0045] like Figure 4 and Figure 6 As shown, the rainwater quick drainage system 2 includes an overflow port 17 arranged at the top of the sunken facility belt, an overflow well 21 arranged below the overflow port 17 and a rainwater grate 18 that can be connected to the overflow well 21. A drainage pipe 15 is provided between the overflow well 21 and the rainwater grate 18. The side wall of the rainwater grate 18 is also connected to a water collection branch pipe 19. It is worth noting that the water collection branch pipe 19 here is not the water collection branch pipe 19 connected to the overflow chamber 16 for mutual water supply, but is a water collection branch pipe 19 connected to the municipal pipeline network.

[0046] The present embodiment adopts a combination of soil layer infiltration + infiltration chamber 6 and overflow well 21. When the rainwater collection rate is ≤ the rainwater infiltration rate, rainwater enters the infiltration chamber 6 by infiltration through the plant roots and the gaps in the soil, and the excess rainwater overflows into the urban pipe network, and the rainwater is collected and discharged by a storage, retention and slow discharge method; when the rainwater collection rate is greater than the rainwater infiltration rate, the rainwater volume of the sunken facility belt exceeds the storage volume of the facility, and the rainwater volume is quickly overflowed and discharged to the municipal pipe network through the overflow well 21, realizing the rapid discharge of urban rainwater, thereby realizing the functions of rainwater storage, retention, purification, use and discharge, that is, the present utility model can realize comprehensive and effective rainwater and flood management for different rainfalls, thereby effectively solving the current problems of large urban rainwater runoff and low rainwater utilization rate.

[0047] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A new type of rainwater storage sponge integrated structure facility, characterized in that: include: A rainwater infiltration system, including a sunken facility belt and a number of infiltration layers arranged at the bottom of the sunken facility belt; The rainwater collection system comprises a rainwater collection tube buried in the seepage layer, and a plurality of perforations are evenly arranged on the surface of the rainwater collection tube; The rainwater storage and discharge system comprises an infiltration chamber connected with a flower pipe, an overflow chamber connected with the infiltration chamber and a water receiving branch pipe connected with the overflow chamber, wherein an overflow weir is arranged between the infiltration chamber and the overflow chamber.

2. A novel rainwater storage sponge integrated structure facility according to claim 1, characterized in that: The particles filled in the stagnant layer are any one of pebbles, gravels, construction waste crushed stones or volcanic rocks, and the diameters of the particles filled in the stagnant layer increase from top to bottom.

3. A novel rainwater storage sponge integrated structure facility according to claim 1, characterized in that: The infiltration chamber is arranged under the road, and the end of the rainwater collecting flower pipe is communicated with the bottom of the side wall of the infiltration chamber, and an end cover is arranged on the top of the infiltration chamber.

4. A novel rainwater storage sponge integrated structure facility according to claim 3, characterized in that: The side wall of the infiltration chamber is provided with a glass fiber reinforced plastic grid net covering the end of the rainwater collecting flower pipe.

5. A novel rainwater storage sponge integrated structure facility according to claim 4, characterized in that: The horizontal height of the connection between the rainwater collecting flower pipe and the side wall of the infiltration chamber is lower than the height of the overflow weir.

6. The novel rainwater storage sponge integrated structure facility according to claim 1 is characterized in that: It also includes a rainwater quick drainage system, which includes an overflow port arranged at the top of the sunken facility belt, an overflow well arranged below the overflow port and a rainwater grate that can be connected to the overflow well, a drainage pipe is arranged between the overflow well and the rainwater grate, and the side wall of the rainwater grate is also connected to a water collecting branch pipe.

7. The novel rainwater storage sponge integrated structure facility according to claim 1 is characterized in that: The infiltration chambers are a plurality of stepped chambers and are all in communication with the overflow chambers.

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