Retaining wall system for sponge city design
The retaining wall system with integrated water storage and filtration layers addresses the issue of unorganized rainwater flow, effectively managing runoff and protecting urban environments by collecting and delaying rainwater entry into the municipal system.
Patent Information
- Application Number
- CN202422210838.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The rainwater on the existing retaining wall flows directly along the wall from the upper site to the lower site, causing the drainage system of the lower site to be unable to deal with a large amount of rainwater in time, causing damage to the environment and facilities.
A system including a retaining wall, a reservoir and a drainage ditch is designed. The retaining wall consists of a first water partition layer, a second water partition layer and a water filter layer. The first water partition layer is arranged inclined on the upper site, and the water filter layer is vertically arranged between the two water partition layers. The reservoir is located below the lower site, and is used to collect and store filtered rainwater. The drainage ditch is connected to the municipal system.
By guiding rainwater to the filtered water layer and filtering, it will prolong the time when rainwater enters the municipal system, avoid excessive rainwater entering the lower site directly, protect the environment and facilities, and enhance the control effect of rainwater runoff.
Smart Images
Figure CN223103705U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of retaining walls, in particular to a retaining wall system for sponge city design. Background Art
[0002] A retaining wall refers to a structure that supports the soil filling of a roadbed or a hillside soil mass and prevents the soil filling or the soil mass from deforming and becoming unstable. Common forms of retaining walls include gravity type, counterweight type, cantilever type, buttress type, anchor-pulling type, etc. The vertical interface is mainly a solid wall, and the foundation is mainly a natural foundation.
[0003] Currently, for existing retaining walls, usually at the bottom of the wall, drainage holes are arranged at intervals in combination with gravel blind ditches and drain pipes. When there is water overflow, rainwater directly flows down the wall from the upper site of the retaining wall to the lower site in an unorganized manner. In rainy weather with heavy rainfall, the drainage system in the lower site cannot timely drain the rainwater flowing down from the upper site, resulting in damage to the surrounding environment and facilities in the lower site caused by the rainwater. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is that in the prior art, rainwater on the retaining wall directly flows down the wall from the upper site of the retaining wall to the lower site in an unorganized manner, resulting in the drainage system being unable to timely handle a large amount of rainwater flowing down simultaneously.
[0005] To solve the above technical problem, the utility model provides a retaining wall system for sponge city design, which includes a retaining wall, a water storage tank and a drainage ditch; the bottom of the retaining wall is arranged on the lower site, the top of the retaining wall is arranged on the upper site, the retaining wall includes a first water-proof layer, a second water-proof layer and a water-filtering layer, the first water-proof layer is arranged on the upper site and is inclined from both ends to the middle, the second water-proof layer is arranged on the lower site, the water-filtering layer is vertically arranged between the first water-proof layer and the second water-proof layer, and the water-filtering layer is located in the middle of the retaining wall body; the water storage tank is arranged on one side of the bottom of the retaining wall, and the water storage tank is located below the lower site, the bottom of the water-filtering layer is connected to the water storage tank; the drainage ditch is arranged on the side of the water storage tank away from the retaining wall, one end of the drainage ditch is connected to the water storage tank, and the other end is connected to the municipal drainage system.
[0006] In one embodiment, the water-filtering layer includes a water inlet pipe and a water outlet pipe, the water inlet pipe is arranged at the top of the water-filtering layer, and the water inlet pipe is located at the lowest point in the middle of the first water-proof layer, the water outlet pipe is inclined and arranged at the bottom of the water-filtering layer, and one end of the water outlet pipe is connected to the water-filtering layer, and the other end is connected to the water storage tank.
[0007] In one embodiment, the water-filtering layer further includes a waterproof layer, and the waterproof layer is respectively arranged on both sides of the water-filtering layer along the length direction of the water-filtering layer.
[0008] In one embodiment, a publicity frame is provided on one side of the retaining wall close to the reservoir, and the publicity frame is located above the reservoir.
[0009] In one embodiment, the reservoir includes an energy dissipation pool and a water retention layer. The energy dissipation pool is provided at the top of the water retention layer, and the energy dissipation pool is connected to the water filtration layer. The rainwater flowing out of the water filtration layer enters the water retention layer for storage after energy dissipation in the energy dissipation pool.
[0010] In one embodiment, the reservoir further includes a drainage layer for secondary energy dissipation, and the drainage layer is provided at the bottom of the water retention layer.
[0011] In one embodiment, a collection pipe is inclinedly provided at the bottom of the drainage layer. One end of the collection pipe is connected to the drainage layer, and the other end of the collection pipe passes through the pool wall of the reservoir and is connected to a drainage ditch.
[0012] In one embodiment, the reservoir further includes a planting layer for planting plants. The planting layer is provided at the top of the water retention layer and is located beside the energy dissipation pool.
[0013] In one embodiment, the reservoir further includes a vertically arranged overflow pipe. One end of the overflow pipe is placed on the planting layer, and the other end passes through the water retention layer and is connected to the collection pipe.
[0014] In one embodiment, a guardrail for preventing passers-by from falling from a height is provided at the top of the retaining wall.
[0015] Compared with the prior art, the retaining wall system for sponge city design in the embodiments of the present utility model has the following beneficial effects: 1) The retaining wall, as the main structure, not only undertakes the basic function of supporting the soil to prevent landslides, but also plays the role of rainwater collection and filtration and reducing the rainwater runoff. The retaining wall includes a first water isolation layer, a second water isolation layer and a water filtration layer. The first water isolation layer is arranged on the upper site and at a certain distance below the top of the site, which is beneficial to the setting of greening and landscapes, forming a top buffer layer to conform to the green building design concept. Its two ends are inclined to help guide the rainwater to the lowest point of the first water isolation layer and enter the water filtration layer, preventing the rainwater from directly penetrating into the retaining wall body. The second water isolation layer is arranged on the lower site as a water isolation barrier to ensure that the rainwater does not penetrate into the underground space and improve the safety of the retaining wall. The water filtration layer is vertically arranged between the two water isolation layers and in the middle of the retaining wall body, which can filter the rainwater and reduce the rainwater runoff, and extend the time for the rainwater to enter the municipal drainage system; 2) The reservoir is located on one side of the bottom of the retaining wall and is designed below the lower site, which is used to collect and store the rainwater filtered by the water filtration layer, further extending the time for the rainwater to enter the municipal drainage system, effectively avoiding excessive rainwater entering the municipal drainage system at the same time, which may cause the municipal drainage system to fail to drain normally and cause damage to the surrounding environment and facilities of the lower site. The concept of sponge city is embedded in the retaining wall of the present utility model, realizing the effective connection of rainwater infiltration at different site elevations up and down, extending the time for the rainwater to enter the municipal system, and enhancing the control effect on rainwater runoff. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of an embodiment of the present utility model.
[0017] Figure 2 is Figure 1 an enlarged view of part A in
[0018] In the figure, 1, upper site; 2, lower site; 3, retaining wall; 31, first water isolation layer; 32, water filtration layer; 321, water inlet pipe; 322, water outlet pipe; 33, second water isolation layer; 34, guardrail; 4, reservoir; 41, energy dissipation pool; 42, planting layer; 43, water retention layer; 44, drainage layer; 45, collection pipe; 46, overflow pipe; 5, drainage ditch; 6, publicity frame. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.
[0020] In the description of the present utility model, it should be understood that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. The terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "height", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present utility model is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0022] In the description of the present utility model, it should be understood that the terms "first" and "second" in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.
[0023] As Figures 1 to 2 shown, the present utility model preferably provides a retaining wall system for sponge city design, which includes a retaining wall 3, a water storage tank 4, and a drainage ditch 5; the bottom of the retaining wall 3 is arranged on the lower layer site 2, the top of the retaining wall 3 is arranged on the upper layer site 1, the retaining wall 3 includes a first water barrier layer 31, a second water barrier layer 33, and a water filtration layer 32. The first water barrier layer 31 is arranged on the upper layer site 1, and the first water barrier layer 31 is inclined from both ends to the middle water filtration layer 32, and the inclination slope is 1% - 3%. The second water barrier layer 33 is arranged on the lower layer site 2, the water filtration layer 32 is vertically arranged between the first water barrier layer 31 and the second water barrier layer 33, and the water filtration layer 32 is located in the middle of the retaining wall 3 wall; the water storage tank 4 is arranged on one side surface at the bottom of the retaining wall 3, and the water storage tank 4 is located below the lower layer site 2, and the bottom of the water filtration layer 32 is connected to the water storage tank 4; the drainage ditch 5 is arranged on the side of the water storage tank 4 away from the retaining wall 3, one end of the drainage ditch 5 is connected to the water storage tank 4, and the other end is connected to the municipal drainage system.
[0024] Based on the above technical features, in this utility model, the retaining wall 3 serves as the main structure, which not only undertakes the basic function of supporting the soil to prevent landslides, but also plays the role of rainwater collection and filtration and reducing the rainwater runoff. The retaining wall 3 includes a first water-proof layer 31, a second water-proof layer 33 and a water filtration layer 32. The first water-proof layer 31 is arranged on the upper site 1 and is set at a certain distance below the top of the site, which is beneficial to the setting of greening and landscapes, forming a top buffer layer to conform to the green building design concept. The two ends are designed to be inclined, which helps to guide the rainwater to the lowest point of the first water-proof layer 31 and enter the water filtration layer 32, preventing the rainwater from directly penetrating into the retaining wall body. The second water-proof layer 33 is arranged on the lower site 2 and serves as a water-proof barrier to ensure that the rainwater does not penetrate into the underground space. The water filtration layer 32 is vertically arranged between the two water-proof layers and is located in the middle of the retaining wall 3 body, which can filter the rainwater and reduce the rainwater runoff, and extend the time for the rainwater to enter the municipal drainage system; through the setting of the water storage tank 4, the water storage tank 4 is located on one side of the bottom of the retaining wall 3 and is designed below the lower site 2, which is used to collect and store the rainwater filtered by the water filtration layer 32, further extending the time for the rainwater to enter the municipal drainage system, effectively avoiding excessive rainwater entering the municipal drainage system at the same time, resulting in the abnormal drainage of the municipal drainage system and causing damage to the surrounding environment and facilities of the lower site 2.
[0025] As some embodiments of this utility model, such as Figure 1 shown, the water filtration layer 32 includes a water inlet pipe 321 and a water outlet pipe 322. The water inlet pipe 321 is arranged at the top of the water filtration layer 32, and the water inlet pipe 321 is located at the lowest point in the middle of the first water-proof layer 31. The water outlet pipe 322 is inclined and arranged at the bottom of the water filtration layer 32, and one end of the water outlet pipe 322 is connected to the water filtration layer 32, and the other end is connected to the water storage tank 4. The water inlet pipe 321 is arranged at the top of the water filtration layer 32 and is located at the lowest point in the middle of the first water-proof layer 31. Such a setting ensures that after the rainwater flows through the first water-proof layer 31 and is guided by its inclination, it can smoothly and centrally enter the water filtration layer 32. The water outlet pipe 322, as the connection bridge between the water filtration layer 32 and the water storage tank 4, the inclined water outlet pipe 322 ensures that the rainwater accurately enters the water storage tank 4 after being filtered and diverted in the water filtration layer 32.
[0026] As some embodiments of this utility model, such as Figure 1 shown, the water filtration layer 32 further includes an anti-seepage layer, and the anti-seepage layer is respectively arranged on both sides of the water filtration layer 32 along the length direction of the water filtration layer 32. Through the setting of the anti-seepage layer, it effectively prevents the rainwater from leaking from both sides of the water filtration layer 32 into the soil behind the retaining wall 3, ensuring that the rainwater is fully filtered and diverted inside the water filtration layer 32 and finally flows into the water storage tank 4.
[0027] As some embodiments of this utility model, such as Figure 1As shown in the figure, a publicity frame 6 is provided on one side of the retaining wall 3 close to the reservoir 4, and the publicity frame 6 is located above the reservoir 4. The setting of the publicity frame 6 can be coordinated with the overall style of the retaining wall 3 and the surrounding environment, adopting an aesthetic and generous appearance design, as well as colorful and rich publicity materials, adding a bright color to the urban environment.
[0028] As some embodiments of the present utility model, as Figure 2 shown in the figure, the reservoir 4 includes an energy dissipation pool 41 and a water retention layer 43. The energy dissipation pool 41 is arranged on the top of the water retention layer 43, and the energy dissipation pool 41 is connected to the water filtration layer 32. The rainwater flowing out of the water filtration layer 32 enters the water retention layer 43 for storage after being dissipated by the energy dissipation pool 41. Through the setting of the energy dissipation pool 41 and the water retention layer 43, the energy dissipation pool 41 is arranged on the top of the water retention layer 43 and is connected to the water filtration layer 32. The main function of the energy dissipation pool 41 is to slow down and dissipate the energy of the water flow flowing in from the water filtration layer 32, prevent the water flow from directly impacting the bottom of the water retention layer 43, reduce the impact force of the water flow and lower the runoff of the water flow. The water retention layer 43 is located below the energy dissipation pool 41 and is the main part of the reservoir 4 for storing rainwater. The rainwater treated by the energy dissipation pool 41 enters the water retention layer 43 and is stored here, enabling the rainwater to slowly enter the municipal drainage system, further extending the discharge time of the rainwater, and further enhancing the control effect on the rainwater runoff.
[0029] As some embodiments of the present utility model, as Figure 2 shown in the figure, the reservoir 4 further includes a drainage layer 44 for secondary energy dissipation, and the drainage layer 44 is arranged at the bottom of the water retention layer 43. Through the setting of the drainage layer 44, when the rainwater in the water retention layer 43 reaches a certain amount, secondary energy dissipation treatment is carried out through the drainage layer 44 to slow down the water flow speed and reduce the impact force of the water flow on the bottom of the reservoir 4, protecting the structural stability of the reservoir 4. The drainage layer 44 also plays a role in filtering water, reducing the loss of planting soil and ensuring smooth drainage.
[0030] As some embodiments of the present utility model, as Figure 2 shown in the figure, a collection pipe 45 is inclinedly arranged at the bottom of the drainage layer 44. One end of the collection pipe 45 is connected to the drainage layer 44, and one end of the collection pipe 45 passes through the pool wall of the reservoir 4 and is connected to the drainage ditch 5. Through the inclined setting of the collection pipe 45, the collection pipe 45 can guide the water flow to flow smoothly towards the drainage ditch 5, reducing the residence time of the water flow in the reservoir 4 and the potential impact on the structure of the reservoir 4. At the same time, one end of the collection pipe 45 passes through the pool wall of the reservoir 4 and is connected to the drainage ditch 5, realizing the effective discharge of rainwater from the reservoir 4 to the external drainage system.
[0031] As some embodiments of the present utility model, as Figure 2As shown in the figure, the reservoir 4 further includes a planting layer 42 for growing plants. The planting layer 42 is arranged on the top of the water retention layer 43, and energy dissipation pools 41 are arranged point-to-point at the corresponding positions along the water outlet 322 in the planting layer 42, which plays a role in alleviating and offsetting the drainage impact force. Through the arrangement of the planting layer 42, the soil and plants in the planting layer 42 can retain a part of the rainwater, slow down the speed of the rainwater flowing into the water retention layer 43, and further play the role of energy dissipation and controlling the rainwater flow rate.
[0032] As some embodiments of the present utility model, as Figure 2 shown in the figure, the reservoir 4 further includes an overflow pipe 46 arranged vertically. One end of the overflow pipe 46 is placed on the planting layer 42, and the other end passes through the water retention layer 43 and is connected to the collection pipe 45. One end of the overflow pipe 46 is placed on the planting layer 42, and the other end passes through the water retention layer 43 and is connected to the collection pipe 45, ensuring that when the rainwater exceeds the discharge capacity of the collection pipe 45, the rainwater is re-overflowed above the planting layer 42 for re-energy dissipation and diversion, avoiding excessive rainwater from entering the municipal drainage system.
[0033] As some embodiments of the present utility model, as Figure 1 shown in the figure, a guardrail 34 for preventing passers-by from falling from a height is arranged on the top of the retaining wall 3. The main function of the guardrail 34 is to prevent passers-by, children or any individuals who may approach the edge of the retaining wall 3 from accidentally falling from a height and causing injuries. The guardrail 34 also plays a role of safety warning. Its existence itself is a clear signal, reminding people that there is a height difference here and special care is needed.
[0034] Furthermore, as Figure 1 shown in the figure, the outer wall of the guardrail 34 is arranged parallel to the outer wall of the reservoir 4, so that a landscape area is formed on the outer wall of the retaining wall 3. By arranging the guardrail 34 parallel to the outer wall of the reservoir 4, this design not only enhances the safety and stability of the structure, making the retaining wall 3 visually occupy zero horizontal space. At the same time, it also creates a unique landscape area around the retaining wall 3. The establishment of this landscape area greatly enriches the functionality and aesthetics of the retaining wall 3. The staff can plant plants and arrange publicity frames 6 in the landscape area, making the retaining wall 3 coordinated with the overall nearby landscape style, ensuring both practicality and beauty.
[0035] In summary, the embodiment of the present utility model provides a retaining wall system for sponge city design, and its beneficial effects are as follows: 1) The retaining wall 3, as the main structure, not only undertakes the basic function of supporting the soil to prevent landslides, but also plays the roles of rainwater collection and filtration and reducing the rainwater runoff. The retaining wall 3 includes a first water barrier layer 31, a second water barrier layer 33 and a water filtration layer 32. The first water barrier layer 31 is arranged on the upper site 1 and at a certain distance below the top of the site, which is beneficial to the setting of greening and landscapes, forming a top buffer layer to conform to the green building design concept. The two ends are designed to be inclined, which helps to guide the rainwater to the lowest point of the first water barrier layer 31 and enter the water filtration layer 32, preventing the rainwater from directly penetrating into the retaining wall body. The second water barrier layer 33 is arranged on the lower site 2 as a water barrier to ensure that the rainwater does not penetrate into the underground space. The water filtration layer 32 is vertically arranged between the two water barrier layers and in the middle of the retaining wall 3 body, which can filter the rainwater and reduce the rainwater runoff, and extend the time for the rainwater to enter the municipal drainage system; 2) The reservoir 4 is located on one side of the bottom of the retaining wall 3 and is designed below the lower site 2, and is used to collect and store the rainwater filtered by the water filtration layer 32, further extending the time for the rainwater to enter the municipal drainage system, effectively avoiding excessive rainwater entering the municipal drainage system at the same time, resulting in the municipal drainage system being unable to drain normally and the rainwater causing damage to the surrounding environment and facilities of the lower site 2. The sponge city concept is embedded in the retaining wall 3 of the present utility model, realizing the effective connection of the infiltration of rainwater with different site elevations up and down, extending the time for the rainwater to enter the municipal system, and enhancing the control effect on the rainwater runoff.
[0036] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.
Claims
1. A retaining wall system for sponge city design, comprising an upper site and a lower site, with a height difference between the upper site and the lower site, characterized in that, It includes a retaining wall, a reservoir and a drainage ditch; The bottom of the retaining wall is arranged on the lower layer site, and the top of the retaining wall is arranged on the upper layer site. The retaining wall includes a first water-proof layer, a second water-proof layer and a water-filtering layer. The first water-proof layer is arranged on the upper layer site and is inclined from both ends to the middle. The second water-proof layer is arranged on the lower layer site. The water-filtering layer is vertically arranged between the first water-proof layer and the second water-proof layer and is located in the middle of the retaining wall body; The reservoir is arranged on one side of the bottom of the retaining wall and is located below the lower layer site. The bottom of the water-filtering layer is connected to the reservoir; The drainage ditch is arranged on the side of the reservoir away from the retaining wall. One end of the drainage ditch is connected to the reservoir, and the other end is connected to the municipal drainage system.
2. The retaining wall system for sponge city design according to claim 1, characterized in that, The water-filtering layer includes an inlet pipe and an outlet pipe. The inlet pipe is arranged at the top of the water-filtering layer and is located at the lowest point in the middle of the first water-proof layer. The outlet pipe is inclined and arranged at the bottom of the water-filtering layer. One end of the outlet pipe is connected to the water-filtering layer, and the other end is connected to the reservoir.
3. The retaining wall system for sponge city design according to claim 1, characterized in that, The water-filtering layer further includes an anti-seepage layer, and the anti-seepage layer is respectively arranged on both sides of the water-filtering layer along the length direction of the water-filtering layer.
4. The retaining wall system for sponge city design according to claim 1, characterized in that, A publicity frame is arranged on one side of the retaining wall close to the reservoir, and the publicity frame is located above the reservoir.
5. The retaining wall system for sponge city design according to claim 2, wherein, The reservoir includes an energy dissipation pool and a water retention layer. The energy dissipation pool is arranged on the top of the water retention layer and corresponds to the position of the outlet pipe, and the energy dissipation pool is connected to the water-filtering layer. The rainwater flowing out of the water-filtering layer is dissipated by the energy dissipation pool and then enters the water retention layer for storage.
6. The retaining wall system for sponge city design according to claim 5, characterized in that, The reservoir further includes a drainage layer for secondary energy dissipation, and the drainage layer is arranged at the bottom of the water retention layer.
7. The retaining wall system for sponge city design according to claim 6, characterized in that, A collecting pipe is inclined at the bottom of the drainage layer. One end of the collecting pipe is connected to the drainage layer, and the other end of the collecting pipe passes through the pool wall of the reservoir and is connected to the drainage ditch.
8. The retaining wall system for sponge city design according to claim 7, characterized in that The reservoir further includes a planting layer for planting plants, and the planting layer is arranged on the top of the water retention layer and is located beside the energy dissipation pool.
9. The retaining wall system for sponge city design according to claim 8, wherein, The reservoir further includes a vertically arranged overflow pipe. One end of the overflow pipe is placed on the planting layer, and the other end passes through the water retention layer and is connected to the collecting pipe.
10. The retaining wall system for sponge city design according to claim 1, characterized in that, A guardrail for preventing passers-by from falling from a height is arranged on the top of the retaining wall.