A sunken garden for rainwater collection

Abstract

The utility model relates to the technical field of sunken garden design, and in particular to a sunken garden for collecting rainwater, comprising roads built on both sides of the sunken garden, an overflow rainwater outlet built between the road and the sunken garden, the overflow rainwater outlet being connected to a municipal rainwater pipe network, a drainage ditch built between the overflow rainwater outlet and the road, the drainage ditch being connected to the sunken garden; excess rainwater can be effectively drained away through the overflow rainwater outlet to ensure the normal use of the sunken garden, and at the same time, the setting of the drainage ditch also ensures that there is enough rainwater in the sunken garden.

Description

Technical Field

[0001] The utility model relates to the technical field of sunken garden design, in particular to a sunken garden for collecting rainwater. Background Art

[0002] One of the core elements of sponge city construction is to promote low-impact development of rainwater facilities. Common low-impact development of rainwater facilities include rainwater gardens, grass-planted ditches, sunken green spaces, biological retention pools, rainwater wetlands, rainwater ponds, planted roofs, etc. A rainwater garden refers to a small area of ​​green space with vegetation mainly composed of shrubs and flowers, which is completely sunken or partially sunken. It is used to collect rainwater from itself and surrounding areas. It can temporarily retain rainwater and use soil and plants to purify rainwater, and at the same time has a certain landscape effect.

[0003] A rain garden suitable for clay areas with publication number CN207714473U is disclosed, which includes a sleeve and a gravel layer, a permeable geotextile, a planting soil layer, a covering layer and a water storage layer arranged in sequence from bottom to top; the bottom of the sleeve is vertically inserted in the gravel layer, the top of the sleeve is flush with the top of the covering layer, the sleeve is filled with pebbles, a drainage blind pipe is buried in the gravel layer, the drainage blind pipe is provided with a perforation, and the perforation is connected to a vertical overflow port through a connecting pipe; it discloses a garden with a retention and evolution function for rainwater, but its improvement on the landscape is imperfect, and it cannot handle excessive rainwater. Utility Model Content

[0004] The technical problem to be solved by the utility model is: under the condition of meeting the landscape conditions, the problem of a large amount of rainwater can also be effectively solved.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] Firstly, a sunken garden for collecting rainwater is provided, including roads built on both sides of the sunken garden, an overflow rainwater outlet is built between the road and the sunken garden, the overflow rainwater outlet is connected to a municipal rainwater pipe network, a drainage ditch is built between the overflow rainwater outlet and the road, and the drainage ditch is connected to the sunken garden.

[0007] Furthermore, a high ground is arranged at the edge of the sunken garden, trees are planted on the high ground, and turf is laid on the sunken garden; by planting trees and turf, the landscape visual effect of the sunken garden is better.

[0008] Furthermore, several water inlet pipes are buried between the drainage ditch and the sunken garden, and ventilation overflow pipes are extended from the water inlet pipes to the sides of the sunken garden; the provision of the ventilation overflow pipes enables rainwater in the drainage ditch to smoothly enter the sunken garden, ensuring the smooth flow of rainwater.

[0009] Furthermore, the opening of the ventilation overflow pipe and the drainage ditch are both at the same horizontal height as the preset storage water level of the sunken garden.

[0010] Furthermore, the water inlet pipe extends to the bottom of the sunken garden.

[0011] Furthermore, a drainage pipe is buried under the overflow rainwater outlet, and the drainage pipe is connected to the municipal rainwater pipe network; excess rainwater in the sunken garden is discharged through the drainage pipe to ensure the smooth use of the sunken garden.

[0012] Furthermore, an inspection well is provided at the connection point between the drainage pipe corresponding to the road and the municipal rainwater pipe network.

[0013] Furthermore, the road is arranged at an inclination, and the drainage ditch and the overflow rainwater outlet are provided with blocking nets; the garbage is blocked outside by the blocking nets to prevent the pipeline from being blocked.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model is provided with an overflow rainwater outlet between the water collection ditch and the sunken garden, so that the excess rainwater in the sunken garden can be drained away to prevent the sunken garden from being flooded;

[0016] Second, by connecting the drainage ditch with the sunken garden, rainwater on the road can also be collected in the sunken garden, and a dry creek landscape can be formed when there is less rainfall;

[0017] 3. The setting of the ventilation overflow pipe also allows rainwater on the road to flow into the sunken garden. It can also ensure that when the sunken garden is at the designed storage water volume, it can effectively prevent rainwater on the road from continuing to flow into the sunken garden, so that the water level of the sunken garden is at a preset height. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 is a side view of this embodiment;

[0020] Figure 2 It is a top view of this embodiment. DETAILED DESCRIPTION

[0021] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0022] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The utility model provides a rainwater collection sunken garden, such as Figure 1 and Figure 2 As shown, it includes a sunken garden 1, wherein roads 2 are built on both sides of the sunken garden 1, and an overflow rainwater outlet 3 is built between the edge of the sunken garden 1 and the road 2, wherein rainwater at the edge of the sunken garden 1 flows into the lower city garden on one side, and flows into the overflow rainwater outlet 3 on the other side, wherein the rainwater collected in the overflow rainwater outlet 3 is discharged into the municipal rainwater pipe network 9, and a drainage ditch 4 is arranged between the overflow rainwater outlet 3 and the road 2, and the road 2 is arranged inclined so that the rainwater on the road 2 flows into the drainage ditch 4, wherein the rainwater collected in the drainage ditch 4 is discharged into the sunken garden 1.

[0026] Specifically, during use of this embodiment, rainwater falls into the sunken garden 1, wherein rainwater on the side of the high ground 7 on the edge of the sunken garden 1 flows into the overflow rainwater outlet 3, and the rainwater in the overflow rainwater outlet 3 flows into the municipal rainwater pipe network 9 to drain the rainwater, and rainwater falling on the road 2 flows into the drainage ditch 4, and the rainwater in the drainage ditch 4 also flows into the sunken garden 1, ensuring that there is enough rainwater in the sunken garden 1 to form a dry creek landscape. Grass can be laid on the sunken garden 1, and trees can be planted at the height of the edge to make the visual effect of the landscape more beautiful. When the sunken garden 1 collects rainwater exceeding its designed capacity, the rainwater in the sunken garden 1 will exceed the high ground 7 of the sunken garden 1, and the rainwater will overflow from the edge, thereby flowing into the overflow rainwater outlet 3, ensuring that excess rainwater can be drained away.

[0027] Specifically, in this embodiment, the drainage ditch 4 is connected to the sunken garden 1 through several buried first pipes 5. In order to ensure that rainwater can flow smoothly into the sunken garden 1, a ventilation overflow pipe 6 is extended from the first pipe 5 to the side of the sunken garden 1, and the opening position of the ventilation overflow pipe 6 is the storage water level designed for the sunken garden 1.

[0028] In this embodiment, the preset storage water level of the sunken garden 1 is at the same height as the drainage ditch 3. When the rainwater in the drainage ditch 4 flows into the sunken garden 1 through the water inlet pipe 5, the water level in the sunken garden 1 has not reached the preset storage water level. At this time, the opening of the ventilation overflow pipe 6 is connected to the atmosphere, and the rainwater in the water inlet pipe 5 can flow smoothly into the sunken garden 1. When the water level in the sunken garden 1 rises to the preset storage water level, the rainwater will block the ventilation overflow pipe 6. At this time, it is difficult for the rainwater in the drainage ditch 4 to flow into the sunken garden 1 through the water inlet pipe 5. At this time, the rainwater flowing from the road 2 will flow into the overflow rainwater outlet 3 through the drainage ditch 4, thereby draining the rainwater, wherein the overflow rainwater outlet 3 and the drainage ditch 4 are at the same horizontal height.

[0029] In order to conveniently drain the rainwater in the overflow rainwater outlet 3, a drainage pipe 8 is buried under the overflow rainwater outlet 3, and the drainage pipe 8 is connected to the municipal rainwater pipe network 9. An inspection well 10 is set at the position of the road 2 corresponding to the municipal rainwater pipe network 9.

[0030] Specifically, during use of this embodiment, when the rainfall is small, the rainwater on the road 2 enters the sunken garden 1 through the water collection ditch 4 and the water inlet pipe 5, and the sunken garden 1 collects the rainwater falling on the road 2, ensuring that the sunken garden 2 can form a dry creek landscape;

[0031] When the rainfall is heavy, the water storage in the sunken garden 1 has reached its preset height H+1.3, and the rainwater in the sunken garden 1 overflows the overflow ventilation pipe 6. Under the principle of the communicating vessel, the height of the drainage ditch 4 is also H+1.3, so the rainwater in the drainage ditch 4 will not continue to flow into the sunken garden 1. Since the height of the overflow rainwater outlet 3 is also H+1.3, the rainwater on the road 2 will flow through the drainage ditch 4 to the overflow rainwater outlet 3, thereby draining the excess rainwater and ensuring that the water storage in the sunken garden is within the preset range.

[0032] When the rainfall continues to increase, the rainwater in the sunken garden 1 exceeds the height H+1.4 of the edge highland 7. At this time, the rainwater in the sunken garden 1 will exceed the highland 7 and flow into the overflow rainwater outlet 3 to drain the rainwater.

[0033] Wherein, a blocking net can be arranged on the drainage ditch 4 and the overflow rainwater outlet 3, and a filter net is also arranged on the corresponding overflow ventilation pipe 6 to block some garbage flowing through and prevent the pipeline from being blocked.

[0034] In order to ensure the stability of the entire design, the water inlet pipe 5 is connected to the bottom of the sunken garden 1 so that the water level in the sunken garden 1 rises slowly.

[0035] It should be understood that the above description of the specific embodiments of the utility model is only for illustrating the technical route and features of the utility model, and its purpose is to enable those skilled in the art to understand the content of the utility model and implement it accordingly, but the utility model is not limited to the above specific implementation methods. All changes or modifications made within the scope of the claims of the utility model should be included in the protection scope of the utility model.

Claims

1. A rainwater collection sunken garden, characterized in that: The invention comprises roads (2) constructed on both sides of a sunken garden (1); a plurality of overflow rainwater outlets (3) are constructed between the road (2) and the sunken garden (1); the overflow rainwater outlets (3) are connected to a municipal rainwater pipe network (9); a drainage ditch (4) is constructed between the overflow rainwater outlet (3) and the road (2); the drainage ditch (4) is connected to the sunken garden (1).

2. A rainwater collection sunken garden according to claim 1, characterized in that: A high ground (7) is arranged at the edge of the sunken garden (1), trees are planted on the high ground (7), and grass is laid on the sunken garden (1).

3. A rainwater collection sunken garden according to claim 1, characterized in that: A plurality of water inlet pipes (5) are buried between the water collection ditch (4) and the sunken garden (1), and a ventilation overflow pipe (6) is extended from the water inlet pipe (5) to the side of the sunken garden (1).

4. A rainwater collection sunken garden according to claim 3, characterized in that: The opening of the ventilation overflow pipe (6) and the water collection ditch (4) are both at the same level as the preset storage water level of the sunken garden (1).

5. A rainwater collection sunken garden according to claim 3, characterized in that: The water inlet pipe (5) extends to the bottom of the sunken garden (1).

6. A rainwater collection sunken garden according to claim 1, characterized in that: A drainage pipe (8) is buried under the overflow rainwater outlet (3), and the drainage pipe (8) is connected to the municipal rainwater pipe network (9).

7. A rainwater collection sunken garden according to claim 1, characterized in that: An inspection well (10) is provided at the connection point between the drainage pipe (8) corresponding to the road (2) and the municipal rainwater pipe network (9).

8. The rainwater collection sunken garden according to claim 1, characterized in that: The road (2) is arranged at an inclination, and the drainage ditch (4) and the overflow rainwater outlet (3) are both provided with blocking nets.

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