A sponge city infiltration and drainage system
By introducing permeable pavement, infiltration pipes, drainage wells, and sand discharge troughs into the sponge city infiltration and drainage system, the self-cleaning of sediment is achieved, solving the problem of high maintenance costs caused by sediment deposition and improving the system's automated cleaning capability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- POWERCHINA HUADONG ENG CORP LTD
- Filing Date
- 2023-09-01
- Publication Date
- 2026-05-26
AI Technical Summary
Existing sponge city drainage systems are unable to effectively reduce the ingress of sediment, necessitating regular dredging and increasing maintenance costs.
A sponge city infiltration and drainage system was designed, which includes a permeable pavement, infiltration pipes, drainage wells, water storage tanks, and sand discharge tanks. The system reduces sediment deposition through convection mechanisms and sand discharge outlets, adjusts the opening of the sand discharge outlets using a gate mechanism, and collects sediment in a collection pool to achieve a self-cleaning function.
It effectively reduces the deposition of silt in the drainage system, lowers the maintenance cost of regular dredging, and improves the system's self-cleaning ability.
Smart Images
Figure CN117145030B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of water circulation system technology, and in particular to a sponge city infiltration and drainage system. Background Technology
[0002] Sponge city is a new generation of urban stormwater management concept, referring to a city's ability to adapt to environmental changes and cope with natural disasters caused by rainwater, much like a sponge. A related technology discloses a sponge city infiltration and drainage structure and water circulation system, which includes a hollow drainage well. The bottom of the drainage well is connected to the municipal drainage system, a first filter screen is installed on the upper surface of the drainage well, and a drive motor is installed on the inner wall of the drainage well. The output shaft of the drive motor is coaxially mounted with a rotating shaft. Although this system can classify garbage in rainwater to indirectly improve rainwater utilization and achieve energy conservation and environmental protection, municipal drainage systems often retain a large amount of silt during use. Existing water circulation systems cannot self-clean up silt, requiring regular dredging by workers, resulting in a large workload and increased maintenance costs. Summary of the Invention
[0003] This application provides a sponge city infiltration and drainage system that can reduce the entry of silt and has a certain degree of self-cleaning function, thereby reducing the maintenance costs that require regular dredging.
[0004] The sponge city infiltration and drainage system provided in the embodiments of this application specifically includes:
[0005] The first drainage unit includes a permeable pavement and multiple infiltration pipes. Along a first direction, the multiple infiltration pipes are located at the lower part of the permeable pavement. The first direction is the direction of gravity.
[0006] The drainage well is connected to the permeable pavement through the seepage pipe. There are multiple drainage wells, which are connected to each other through a main drainage pipe. A convection mechanism is provided in the drainage well. The convection mechanism is configured to convect at least a portion of the rainwater entering the drainage well to reduce the deposition of silt in the drainage well.
[0007] A water storage tank, which is connected to the drainage well via a connecting pipe;
[0008] The second drainage unit includes a drainage trough and a sand discharge outlet. The drainage trough has an inlet and an outlet. The inlet is located on the road surface, and the outlet is connected to at least a portion of the drainage well. The sand discharge outlet is located on the path between the inlet and the outlet and is configured to filter sediment from the water entering through the inlet.
[0009] In addition, the sponge city infiltration and drainage system provided in this application embodiment may also have the following additional technical features:
[0010] In one alternative embodiment, the convection mechanism includes a guide plate, an overflow plate, and an arcuate groove. The guide plate is disposed at the connection between the drainage well and the main drainage pipe, and is configured to guide the water flow to one side of the arcuate groove. The overflow plate is disposed in the middle of the drainage well, and the top height of the overflow plate is not higher than half the height of the drainage well. The arcuate groove is located between the guide plate and the overflow plate.
[0011] The seepage pipe and the connecting pipe are respectively connected to opposite sides of the drainage well, and the seepage pipe and the connecting pipe are located above the arc groove.
[0012] In one alternative embodiment, the second drainage unit further includes a sand discharge trough, a gate mechanism, and a collection pool. The sand discharge trough is connected to the drainage trough through the sand discharge outlet. The gate mechanism is located between the sand discharge trough and the drainage trough and can adjust the opening of the sand discharge outlet. The collection pool is connected to the sand discharge trough and is used to collect the silt flowing into the sand discharge trough.
[0013] In one alternative embodiment, the gate mechanism includes a gate plate, a valve stem, a turntable, and a regulating gate. The valve stem is threadedly connected to the regulating gate, with one end of the valve stem along its length connected to the gate plate and the other end connected to the turntable.
[0014] In one alternative embodiment, the drainage ditch is L-shaped, and a filter screen is provided at the connection between the drainage ditch and the drainage well.
[0015] The sand discharge outlet is located at the corner of the drainage channel, and the sand discharge outlet has a slope that gradually slopes downward from the drainage channel to the sand discharge channel.
[0016] In one alternative embodiment, the permeable pipe includes a first permeable pipe and a second permeable pipe. The first permeable pipe is located on both sides of the permeable pavement along its length, and one end of the second permeable pipe along its length is connected to the first permeable pipe, while the other end is connected to the drainage well.
[0017] In one alternative embodiment, the first seepage pipe and the second seepage pipe are provided with multiple seepage holes, which are evenly arranged on the first seepage pipe and the second seepage pipe.
[0018] In one optional embodiment, the permeable pavement includes, from bottom to top, a plain soil layer, a concrete leveling layer, a permeable concrete subbase, and a permeable concrete surface, and a waterproof geotextile is provided between the plain soil layer and the concrete leveling layer.
[0019] Granite slabs are installed on both sides of the permeable pavement along its length.
[0020] In one alternative embodiment, the sponge city drainage system further includes a filter cover disposed on top of the drainage well, the filter cover having multiple drainage holes.
[0021] In one alternative embodiment, the filter cover includes a cover body and a sloping surface disposed around the cover body, the drain hole being a strip-shaped drain hole, and the drain hole being disposed on the cover body and at least a portion of the sloping surface.
[0022] The beneficial effects of the embodiments of this application are as follows:
[0023] The sponge city infiltration and drainage system in this embodiment collects rainwater through permeable pavements while filtering dust and soil from the ground, thus preventing silt from clogging the infiltration system. Simultaneously, when sewage containing a large amount of silt enters the drainage well through the drainage trough, it passes through the silt discharge holes. The silt at the bottom of the drainage trough is collected in the silt discharge tank, reducing the amount of silt deposited at the bottom of the drainage trough and further reducing the silt content. This solves the problem that municipal drainage systems often accumulate large amounts of silt during use, and existing water circulation systems cannot self-clean the silt, requiring regular dredging by workers, resulting in a large workload.
[0024] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description
[0025] Figure 1 A schematic diagram of the structure of the sponge city infiltration and drainage system provided in this application in a specific embodiment;
[0026] Figure 2 A schematic diagram of the plan structure of the sponge city infiltration and drainage system provided in this application;
[0027] Figure 3 A schematic diagram of the convection mechanism provided in this application;
[0028] Figure 4 A structural schematic diagram of the gate mechanism provided in this application;
[0029] Figure 5 A schematic diagram of the composition and structure of the permeable pavement provided in this application;
[0030] Figure 6 This is a schematic diagram of the structure of the filter cover provided in this application;
[0031] Figure 7 A schematic diagram of the structure of the first drainage pipe provided in this application.
[0032] Reference numerals: First drainage unit 1, permeable pavement 11, subgrade layer 111, concrete leveling layer 112, permeable concrete subbase 113, permeable concrete surface 114, granite slab 115, first seepage pipe 12, second seepage pipe 13, seepage hole 14, drainage well 2, guide plate 21, overflow plate 22, arc groove 23, main drainage pipe 3, water storage tank 4, connecting pipe 5, second drainage unit 6, drainage trough 61, sand discharge port 62, sand discharge channel 63, gate mechanism 64, gate plate 641, valve stem 642, turntable 643, regulating gate 644, collection pool 65, filter cover 7, drainage hole 71, slope surface 72.
[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation
[0034] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0035] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.
[0036] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.
[0037] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0038] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.
[0039] This application provides a sponge city infiltration and drainage system. This article describes the technical solution and technical effects by taking the application of this infiltration and drainage system in urban roads as an example. Of course, the application field of the infiltration and drainage system provided in this application is not limited to the description in this article, and it can also be used in other environments, such as towns or industrial parks.
[0040] like Figure 1-7 As shown in the figure, this application provides a sponge city infiltration and drainage system. This system can reduce the entry of sediment and has a certain degree of self-cleaning function, thereby reducing the maintenance costs that require regular dredging. Specifically, the sponge city infiltration and drainage system includes a first drainage unit 1, a drainage well 2, a water storage tank 4, and a second drainage unit 6. The first drainage unit 1 includes a permeable pavement 11 and multiple infiltration pipes. Along a first direction, the multiple infiltration pipes are located at the lower part of the permeable pavement 11, and the first direction is the direction of gravity.
[0041] Specifically, the permeable pipes include a first permeable pipe 12 and a second permeable pipe 13. The first permeable pipe 12 is located on both sides of the permeable pavement 11 along its length. One end of the second permeable pipe 13 is connected to the first permeable pipe 12 along its length, and the other end is connected to the drainage well 2. Both the first and second permeable pipes 12 and 13 are provided with multiple permeable holes 14, which are evenly distributed across the first and second permeable pipes 12 and 13. It should be noted that in this embodiment, the cross-sectional shape of the first and second permeable pipes 12 and 13 is circular. However, in some other embodiments, for ease of installation or transportation, the first and second permeable pipes 12 and 13 can be made into square pipes, with the permeable holes 14 mainly located on the top and side walls of the square pipes. This is not specifically limited here.
[0042] In addition, the drainage well 2 is connected to the permeable pavement 11 through a seepage pipe. There are multiple drainage wells 2, which are connected to each other through a drainage main pipe 3. A convection mechanism is installed in the drainage well 2. The convection mechanism is configured to convect at least part of the rainwater entering the drainage well 2 to reduce the deposition of silt in the drainage well 2. The water storage tank 4 is connected to the drainage well 2 through a connecting pipe 5. The function of the water storage tank 4 is to store a certain amount of rainwater for later use. The second drainage unit 6 includes a drainage channel 61 and a sand discharge port 62. The drainage channel 61 has an inlet end and an outlet end. The inlet end is located on the road surface, and the outlet end is connected to at least part of the drainage well 2. The sand discharge port 62 is set on the path between the inlet end and the outlet end. The sand discharge port 62 is configured to filter silt from the water entering from the inlet end.
[0043] like Figure 1-2 As shown, in this embodiment, taking a permeable pavement 11 of a certain area as an example, two first infiltration pipes 12 are arranged under the permeable pavement 11 of a certain area. The two first infiltration pipes 12 are not located on both sides of the permeable pavement 11 along the length direction of the permeable pavement 11. One end of the first infiltration pipe 12 is connected to the second infiltration pipe 13, and the other end of the second infiltration pipe 13 is connected to the drainage well 2. The drainage wells 2 are installed at equal intervals. Drainage main pipes 3 are provided on both sides of the drainage wells 2. The drainage wells 2 are connected to each other through the drainage main pipes 3. The top of one side of the drainage well 2 is connected to the drainage trough 61. A sand discharge port 62 is opened on one side of the drainage trough 61. When the drainage system is working, some rainwater seeps through the permeable pavement 11 into the first infiltration pipe 12 and the second infiltration pipe 13, and then flows into the drainage well 2 through the second infiltration pipe 13. Some rainwater or sewage mixed with mud and sand enters the drainage well 2 through the drainage ditch 61 on the side of the road. During this process, the sand discharge port 62 can remove some of the mixed mud and sand, thereby reducing the amount of mud and sand entering the drainage well 2. The water in the drainage well 2 can enter the water storage tank 4 for storage and use during the dry season.
[0044] In one specific embodiment, the outer surface of the second seepage pipe 13 is provided with two layers and there is a gap between the two layers. The seepage holes 14 on the outer wall surface of the second seepage pipe 13 are connected to the interior. Both the first seepage pipe 12 and the second seepage pipe 13 are made of PVC material. The second seepage pipe 13 with double-layer filtration structure can better filter the water that seeps into the outside of the second seepage pipe 13.
[0045] like Figure 3As shown, in one specific embodiment, the convection mechanism includes a guide plate 21, an overflow plate 22, and an arc-shaped groove 23. The guide plate 21 is disposed at the connection between the drainage well 2 and the main drainage pipe 3, and is configured to guide the water flow to one side of the arc-shaped groove 23. The overflow plate 22 is disposed in the middle of the drainage well 2, and its bottom is welded to the bottom of the drainage well 2. The top height of the overflow plate 22 is not higher than half the height of the drainage well 2. The arc-shaped groove 23 is located between the guide plate 21 and the overflow plate 22. A seepage pipe and a connecting pipe 5 are respectively connected to opposite sides of the drainage well 2, and the seepage pipe and the connecting pipe 5 are located above the arc-shaped groove 23. The arc-shaped groove 23 in the drainage well 2 can generate convection of water from both sides of the seepage pipe and the connecting pipe 5, thereby enabling water convection at one end of the drainage well 2, allowing the sediment at the bottom to rise, which helps to reduce the accumulation of sediment at the bottom of the drainage well 2.
[0046] like Figure 1-2 As shown, in one specific embodiment, the second drainage unit 6 further includes a sand discharge trough 63, a gate mechanism 64, and a collection pool 65. The sand discharge trough 63 is connected to the drainage trough 61 through a sand discharge port 62. The gate mechanism 64 is located between the sand discharge trough 63 and the drainage trough 61, and the gate mechanism 64 can adjust the opening degree of the sand discharge port 62. The collection pool 65 is connected to the sand discharge trough 63 and is used to collect the silt flowing into the sand discharge trough 63. When sewage or rainwater containing silt enters the drainage well 2 through the drainage trough 61 and passes through the sand discharge port, the silt at the bottom of the drainage trough 61 will be collected into the sand discharge trough 63 through the sand discharge port 62, thereby enabling the silt inside the sand discharge trough 63 to be collected into the collection pool 65, thereby reducing the silt settled at the bottom of the drainage trough 61, which is beneficial to further reduce the silt content.
[0047] Specifically, the drainage ditch 61 is L-shaped, and a filter screen is installed at the connection between the drainage ditch 61 and the drainage well 2. The sand discharge outlet 62 is located at the corner of the drainage ditch 61, and the sand discharge outlet 62 has a slope that gradually slopes downward from the drainage ditch 61 to the sand discharge ditch 63. The drainage ditch 61 is located on the road surface, and the top of the drainage ditch 61 is open. The filter screen installed at the connection between the drainage ditch 61 and the drainage well 2 can filter out debris in the drainage ditch 61 and prevent debris from entering the drainage well 2.
[0048] like Figure 4 As shown, in one specific embodiment, the gate mechanism 64 includes a gate plate 641, a valve stem 642, a turntable 643, and a regulating gate 644. The valve stem 642 is threadedly connected to the regulating gate 644. One end of the valve stem 642 along its length is connected to the gate plate 641, and the other end is connected to the turntable 643. The turntable 643 can drive the valve stem 642 to rotate, thereby driving the valve plate to rise and fall to adjust the opening of the sand discharge port 62.
[0049] like Figure 5As shown, in one specific embodiment, the permeable pavement 11 includes, from bottom to top, a soil layer 111, a concrete leveling layer 112, a permeable concrete cushion layer 113, and a permeable concrete surface 114, with a waterproof geotextile placed between the soil layer 111 and the concrete leveling layer 112; granite slabs 115 are provided on both sides of the permeable pavement 11 along its length. Specifically, the granite slabs 115 are distributed on both sides of the permeable concrete surface 114 and the permeable concrete cushion layer 113. The permeable concrete cushion layer 113 is placed below the permeable concrete surface 114, and a concrete leveling layer 112 is placed below the permeable concrete cushion layer 113. A soil layer 111 is placed below the concrete leveling layer 112, and a waterproof geotextile is placed between the concrete leveling layer 112 and the soil layer 111. This facilitates the filtration of rainwater containing silt through the permeable concrete surface 114, allowing it to permeate into the first infiltration pipe 12.
[0050] like Figure 1 and Figure 6 As shown, in one specific embodiment, the sponge city drainage system further includes a filter cover 7, which is disposed on top of the drainage well 2 and has multiple drainage holes 71. The filter cover 7 includes a cover body and a sloping surface 72 disposed around the cover body. The drainage holes 71 are strip-shaped drainage holes 71, and the drainage holes 71 are disposed on the cover body and at least part of the sloping surface 72. During installation, the drainage well 2 is pre-buried underground, and the filter cover 7 on top of the drainage well 2 protrudes above the ground.
[0051] The working principle of the sponge city infiltration and drainage system provided in this application embodiment is as follows: the first drainage unit 1 collects rainwater through the permeable pavement 11, and the collected rainwater infiltrates into the first infiltration pipe 12 and the second infiltration pipe 13, so that the rainwater can be collected in the drainage well 2 while filtering the dust and soil on the ground, which helps to prevent the silt from blocking the infiltration system.
[0052] When sewage containing a large amount of silt enters the drainage well 2 through the drainage channel 61, it passes through the sand discharge outlet 62. The silt at the bottom of the drainage channel 61 is collected into the sand discharge channel 63 through the sand discharge outlet 62, so that the silt inside the sand discharge channel 63 can be collected into the collection pool 65. This reduces the amount of silt settled at the bottom of the drainage channel 61, which is conducive to further reducing the silt content. This solves the problem that municipal drainage systems often have a large amount of silt during use, and the existing water circulation system cannot self-clean the silt, which leads to the need for workers to dredge regularly, resulting in a large workload.
[0053] The first drainage unit 1 and some water entering from the filter cover 7 will gather at one end of the drainage well 2, and then flow into the water storage tank 4 through the connecting pipe 5 at one end of the drainage well 2 for storage for water use during the dry season. The arc groove 23 in the drainage well 2 can generate convection on both sides, thereby generating convection at the bottom of one end of the drainage well 2, allowing the sediment at the bottom to rise, which helps to reduce the accumulation of sediment at the bottom of the drainage well 2.
[0054] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A sponge city infiltration and drainage system, characterized in that, include: The first drainage unit includes a permeable pavement and multiple infiltration pipes. Along a first direction, the multiple infiltration pipes are located at the lower part of the permeable pavement. The first direction is the direction of gravity. The drainage well is connected to the permeable pavement through the seepage pipe. There are multiple drainage wells, which are connected to each other through a main drainage pipe. A convection mechanism is provided in the drainage well. The convection mechanism is configured to convect at least a portion of the rainwater entering the drainage well to reduce the deposition of silt in the drainage well. A water storage tank, which is connected to the drainage well via a connecting pipe; The second drainage unit includes a drainage trough and a sand discharge outlet. The drainage trough has an inlet end and an outlet end. The inlet end is located on the road surface, and the outlet end is connected to at least a portion of the drainage well. The sand discharge outlet is located on the path between the inlet end and the outlet end and is configured to filter sediment from the water entering through the inlet end. The convection mechanism includes a guide plate, an overflow plate, and an arc-shaped groove. The guide plate is disposed at the connection between the drainage well and the main drainage pipe. The guide plate is configured to guide the water flow to one side of the arc-shaped groove. The overflow plate is disposed in the middle of the drainage well, and the top height of the overflow plate is not higher than half the height of the drainage well. The arc-shaped groove is located between the guide plate and the overflow plate. The seepage pipe and the connecting pipe are respectively connected to opposite sides of the drainage well, and the seepage pipe and the connecting pipe are located above the arc groove; The second drainage unit further includes a sand discharge trough, a gate mechanism, and a collection pool. The sand discharge trough is connected to the drainage trough through the sand discharge port. The gate mechanism is located between the sand discharge trough and the drainage trough and can adjust the opening of the sand discharge port. The collection pool is connected to the sand discharge trough and is used to collect the silt flowing into the sand discharge trough.
2. The sponge city infiltration and drainage system according to claim 1, characterized in that, The gate mechanism includes a gate plate, a valve stem, a turntable, and a regulating gate. The valve stem is threadedly connected to the regulating gate. One end of the valve stem along its length is connected to the gate plate, and the other end is connected to the turntable.
3. The sponge city infiltration and drainage system according to claim 1, characterized in that, The drainage trough is L-shaped, and a filter screen is provided at the connection between the drainage trough and the drainage well. The sand discharge outlet is located at the corner of the drainage channel, and the sand discharge outlet has a slope that gradually slopes downward from the drainage channel to the sand discharge channel.
4. The sponge city infiltration and drainage system according to claim 1, characterized in that, The permeable pipe includes a first permeable pipe and a second permeable pipe. The first permeable pipe is located on both sides of the permeable pavement along its length. One end of the second permeable pipe along its length is connected to the first permeable pipe, and the other end is connected to the drainage well.
5. The sponge city infiltration and drainage system according to claim 4, characterized in that, The first seepage pipe and the second seepage pipe are provided with seepage holes, and there are multiple seepage holes, which are evenly arranged on the first seepage pipe and the second seepage pipe.
6. The sponge city infiltration and drainage system according to any one of claims 1 or 2-5, characterized in that, The permeable pavement includes, from bottom to top, a plain soil layer, a concrete leveling layer, a permeable concrete subbase, and a permeable concrete surface, and a waterproof geotextile is provided between the plain soil layer and the concrete leveling layer. Granite slabs are installed on both sides of the permeable pavement along its length.
7. The sponge city infiltration and drainage system according to claim 6, characterized in that, It also includes a filter cover, which is disposed on the top of the drainage well and has multiple drainage holes.
8. The sponge city infiltration and drainage system according to claim 7, characterized in that, The filter cover includes a cover body and a sloping surface disposed around the cover body. The drain hole is a strip-shaped drain hole and is disposed on the cover body and at least part of the sloping surface.