Rainwater utilization type bioretention zone facility

Abstract

The utility model relates to the technical field of bioretention belts, in particular to a rainwater utilization type bioretention belt facility which comprises a bioretention belt body, the bioretention belt body is arranged between a roadway and a sidewalk, the bioretention belt body comprises a curb, a biological section and a flat curb, the curb is fixedly installed on the side close to the roadway, and the biological section is fixedly installed on the side close to the roadway. The curb is fixedly mounted on one side close to the sidewalk, and the biological section is arranged between the curb and the curb; the biological section comprises an original soil layer, a gravel layer, a sand filter layer, planting soil and a water storage layer which are sequentially arranged from bottom to top, and vegetation is planted in the planting soil and covers the water storage layer. The sidewalk has the advantages that accumulated water overflowing from the motor vehicle lane to the sidewalk is reduced, and pedestrians can go out conveniently.

Description

Technical Field

[0001] This application relates to the technical field of bioretention zones, and in particular to a rainwater utilization type bioretention zone facility. Background Art

[0002] The road green belt is an important part of modern road design, which can play roles such as greening the urban environment, purifying the urban air, and beautifying the urban appearance. In related technologies, the sidewalk and the motor vehicle lane are usually directly connected. When the rain is heavy, the peak flow rate is large, and the rainwater discharge on both sides of the motor vehicle lane is limited, resulting in the accumulation of water overflowing onto the sidewalk, which affects the pedestrian travel. Utility Model Content

[0003] In order to reduce the accumulation of water overflowing from the motor vehicle lane onto the sidewalk and facilitate pedestrian travel, this application provides a rainwater utilization type bioretention zone facility.

[0004] A rainwater utilization type bioretention zone facility provided by this application adopts the following technical solutions:

[0005] A rainwater utilization type bioretention zone facility includes a bioretention zone body. The bioretention zone body is arranged between the vehicle lane and the sidewalk. The bioretention zone body includes a curb, a biological section, and a flat curb. The curb is fixedly installed on the side close to the vehicle lane, the flat curb is fixedly installed on the side close to the sidewalk, and the biological section is arranged between the curb and the flat curb;

[0006] The biological section includes a native soil layer, a gravel layer, a sand filter layer, a planting soil layer, and a water storage layer arranged in sequence from bottom to top. Vegetation is planted in the planting soil layer, and the vegetation covers the water storage layer.

[0007] By adopting the above technical solutions, when the rainwater flow rate is large, the rainwater on the vehicle lane side first overflows to the biological section and infiltrates from top to bottom. On the one hand, it reduces the rainwater overflowing onto the sidewalk, and on the other hand, it helps the growth of plants and constructs a sponge city. The rainwater on the sidewalk can also flow into the biological section, facilitating pedestrian travel.

[0008] Optionally, an anti-seepage membrane is arranged between the vehicle lane and the biological section, and the anti-seepage membrane extends from below the curb to between the native soil layer and the gravel layer.

[0009] By adopting the above technical solutions, it can reduce the infiltration of rainwater below the vehicle lane and improve the stability and service life of the vehicle lane.

[0010] Optionally, the height of the top surface of the curb is higher than the height of the top surface of the water storage layer, and the height of the top surface of the flat curb is flush with the height of the top surface of the water storage layer.

[0011] By adopting the above technical solution, the possibility of rainwater overflowing onto the sidewalk is further reduced.

[0012] Optionally, the depths of the gravel layer, sand filter layer, planting soil, and the middle of the water storage layer are 30 cm, 10 cm, 50 cm, and 20 cm in sequence.

[0013] Optionally, the middle of the bottom surface of the water storage layer is concave.

[0014] By adopting the above technical solution, rainwater can be concentrated and infiltrated into the middle of the water storage layer, reducing the possibility of rainwater infiltrating to both sides.

[0015] Optionally, the curbstone includes a stone body and mounting feet fixedly connected to the bottom surface of the stone body. There is one mounting foot near each of the two ends of the stone body, and there is a gap between the two mounting feet; the mounting feet are trapezoid-shaped with a narrower upper part and a wider lower part.

[0016] By adopting the above technical solution, the gap between the two mounting feet facilitates the rope to pass through for the handling and installation operation of the curbstone. At the same time, the gap is narrower at the bottom and wider at the top, which can limit the rope; in addition, after the curbstone is installed, the soil is embedded in the gap between the mounting feet and the gap between the mounting feet and the stone body, which can improve the installation stability of the curbstone.

[0017] Optionally, a water collection groove is opened on the side surface in the length direction of the stone body. First water guiding holes and second water guiding holes are respectively opened on the two side walls in the width direction of the water collection groove, and the first water guiding hole and the second water guiding hole respectively penetrate through the two side walls in the width direction of the stone body.

[0018] By adopting the above technical solution, the accumulated water on the side of the roadway can be drained into the biological section through the first water guiding hole and the second water guiding hole, and the water collection groove can play a role in buffering and temporarily storing the accumulated water.

[0019] Optionally, the first water guiding hole is close to the roadway, the second water guiding hole is close to the sidewalk, the first water guiding hole and the second water guiding hole are both inclined in the same direction, and the first water guiding hole is higher than the second water guiding hole.

[0020] By adopting the above technical solution, it is convenient for the accumulated water to be drained into the biological section.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. When the rainwater flow is large, the rainwater on the side of the roadway preferentially overflows into the biological section and infiltrates from top to bottom. On the one hand, it reduces the rainwater overflowing onto the sidewalk, and on the other hand, it helps the growth of plants and constructs a sponge city. The rainwater on the sidewalk can also flow into the biological section, facilitating the travel of pedestrians;

[0023] 2. The anti-seepage membrane can reduce the infiltration of rainwater under the roadway, improving the stability and service life of the roadway; the middle part of the bottom surface of the water storage layer is concave, which can make the rainwater concentrate and infiltrate downward in the middle of the water storage layer, reducing the possibility of rainwater infiltrating to both sides.

[0024] 3. The installation feet are trapezoidally arranged with a narrower upper part and a wider lower part. The gap between the two installation feet facilitates the insertion of a rope for the handling and installation operation of the curbstone. At the same time, the gap is narrower at the lower part and wider at the upper part, which can limit the rope. In addition, after the curbstone is installed, the soil is embedded in the gap between the installation feet and the gap between the installation feet and the stone body, which can improve the installation stability of the curbstone. Description of the Drawings

[0025] Figure 1 is a schematic diagram of the overall structure of a rainwater utilization type bioretention zone facility according to an embodiment of the present application.

[0026] Figure 2 is a schematic diagram for showing the structure of the curbstone in an embodiment of the present application.

[0027] Figure 3 is a schematic diagram for showing the structure of the catchment trough in an embodiment of the present application.

[0028] Description of the reference numerals: 1, curbstone; 11, stone body; 12, installation feet; 13, catchment trough; 14, first water guiding hole; 15, second water guiding hole; 2, flat curbstone; 3, original soil layer; 4, gravel layer; 5, sand filter layer; 6, planting soil; 7, water storage layer; 8, anti-seepage membrane. Detailed Description of the Embodiment

[0029] The following is a further detailed description of the present application in conjunction with the attached Figures 1-3 drawings.

[0030] An embodiment of the present application discloses a rainwater utilization type bioretention zone facility. Referring to Figure 1 , the rainwater utilization type bioretention zone facility includes a rainwater utilization type bioretention zone facility, including a bioretention zone body. The bioretention zone body is arranged between the roadway and the sidewalk. The bioretention zone body includes a curbstone 1, a biological section, and a flat curbstone 2. The curbstone 1 is fixedly installed on the side close to the roadway, the flat curbstone 2 is fixedly installed on the side close to the sidewalk, and the biological section is arranged between the curbstone 1 and the flat curbstone 2; the biological section includes an original soil layer 3, a gravel layer 4, a sand filter layer 5, a planting soil 6, and a water storage layer 7 arranged in sequence from bottom to top. Vegetation is planted in the planting soil 6, and the vegetation covers the water storage layer 7.

[0031] When the rainwater flow is large, the rainwater on the roadway side first overflows to the biological section and infiltrates from top to bottom. On the one hand, it reduces the overflow of rainwater to the sidewalk, and on the other hand, it helps the growth of plants to build a sponge city. The rainwater on the sidewalk can also flow into the biological section, facilitating the travel of pedestrians.

[0032] Referring to Figure 1 , an anti-seepage membrane 8 is provided between the roadway and the biological section. The anti-seepage membrane 8 extends from below the curbstone 1 to between the original soil layer 3 and the gravel layer 4. It can reduce the infiltration of rainwater under the roadway, improving the stability and service life of the roadway. The height of the top surface of the curbstone 1 is higher than the height of the top surface of the water storage layer 7, and the height of the top surface of the flat curb 2 is flush with the height of the top surface of the water storage layer 7, further reducing the possibility of rainwater overflowing onto the sidewalk. The depths of the middle parts of the gravel layer 4, the sand filter layer 5, the planting soil 6, and the water storage layer 7 are 30 cm, 10 cm, 50 cm, and 20 cm in sequence. The middle part of the bottom surface of the water storage layer 7 is recessed, which can make rainwater concentrate and infiltrate into the middle part of the water storage layer 7, reducing the possibility of rainwater infiltrating to both sides.

[0033] Referring to Figures 1-3 , the curbstone 1 includes a stone body 11 and mounting feet 12 fixedly connected to the bottom surface of the stone body 11. There is one mounting foot 12 near each end of the stone body 11, and there is a gap between the two mounting feet 12; the mounting feet 12 are trapezoid-shaped with a narrower upper part and a wider lower part. The gap between the two mounting feet 12 facilitates the insertion of a rope for the handling and installation operation of the curbstone 1. At the same time, the gap is narrower at the bottom and wider at the top, which can limit the rope; in addition, after the curbstone 1 is installed, the soil is embedded in the gap between the mounting feet 12 and the gap between the mounting feet 12 and the stone body 11, which can improve the installation stability of the curbstone 1.

[0034] Referring to Figures 2-3 , a water collection groove 13 is formed on the side surface of the stone body 11 in the length direction. First water guiding holes 14 and second water guiding holes 15 are respectively formed on the two side walls in the width direction of the water collection groove 13, and the first water guiding holes 14 and the second water guiding holes 15 respectively penetrate through the two side walls of the stone body 11 in the width direction. The accumulated water on one side of the roadway can be drained into the biological section through the first water guiding holes 14 and the second water guiding holes 15, and the water collection groove 13 can play a role in buffering and temporarily storing the accumulated water. The first water guiding holes 14 are close to the roadway, and the second water guiding holes 15 are close to the sidewalk. The first water guiding holes 14 and the second water guiding holes 15 are both inclined in the same direction, and the first water guiding holes 14 are higher than the second water guiding holes 15, which is convenient for draining the accumulated water into the biological section.

[0035] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A rainwater-utilizing bioretention zone facility, characterized in that: The bioretention belt body is provided between a roadway and a sidewalk, and the bioretention belt body comprises a curbstone (1), a biological segment and a flat curbstone (2). The curbstone (1) is fixedly installed on a side close to the roadway, the flat curbstone (2) is fixedly installed on a side close to the sidewalk, and the biological segment is provided between the curbstone (1) and the flat curbstone (2); The biological section comprises an original soil layer (3), a gravel layer (4), a sand filter layer (5), a planting soil (6) and an aquifer (7) which are arranged in sequence from bottom to top. Vegetation is planted in the planting soil (6), and the vegetation covers the aquifer (7).

2. A rainwater-utilizing bioretention zone facility according to claim 1, characterized in that: An anti-seepage membrane (8) is arranged between the carriageway and the biological section, and the anti-seepage membrane (8) extends from below the curb (1) to between the original soil layer (3) and the gravel layer (4).

3. A rainwater-utilizing bioretention zone facility according to claim 1, characterized in that: The height of the top surface of the curbstone (1) is higher than the height of the top surface of the aquifer (7), and the height of the top surface of the flat curbstone (2) is flush with the height of the top surface of the aquifer (7).

4. A rainwater-utilizing bioretention zone facility according to claim 1, characterized in that: The depths of the gravel layer (4), the sand filter layer (5), the planting soil (6) and the middle part of the aquifer (7) are 30 cm, 10 cm, 50 cm and 20 cm respectively.

5. The rainwater-utilizing bioretention zone facility according to claim 1, characterized in that: The middle part of the bottom surface of the water storage layer (7) is concave.

6. A rainwater-utilizing bioretention zone facility according to claim 1, characterized in that: The curbstone (1) comprises a stone body (11) and mounting feet (12) fixedly connected to the bottom surface of the stone body (11); one mounting foot (12) is provided at each end close to the stone body (11); a gap is provided between the two mounting feet (12); and the mounting feet (12) are arranged in a trapezoidal shape that is narrow at the top and wide at the bottom.

7. A rainwater-utilizing bioretention zone facility according to claim 6, characterized in that: A water collecting groove (13) is provided on the side surface in the length direction of the stone body (11), and a first water guide hole (14) and a second water guide hole (15) are respectively provided on two side walls in the width direction of the water collecting groove (13), and the first water guide hole (14) and the second water guide hole (15) respectively penetrate the two side walls in the width direction of the stone body (11).

8. A rainwater-utilizing bioretention zone facility according to claim 7, characterized in that: The first water guide hole (14) is close to the carriageway, and the second water guide hole (15) is close to the sidewalk. The first water guide hole (14) and the second water guide hole (15) are both inclined in the same direction, and the first water guide hole (14) is higher than the second water guide hole (15).

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