JP3699428B2 - Rooftop greening system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rooftop greening system, and more particularly to a rooftop greening system having a water storage area for storing rainwater.
[0002]
[Background Art and Problems to be Solved by the Invention]
In recent years, many attempts have been made to plant plants on a large scale on the rooftops of buildings and to plant green spaces in urban areas.
[0003]
In particular, recently, activities such as creating wetlands, grasslands, forests, etc. in gardens, parks, riverbeds, etc. to bring back wildlife have become popular, and this has raised interest in biotopes.
[0004]
This has developed into themes of symbiosis between humans and organisms in urban areas, conservation and restoration of natural ecosystems, so that wildlife can create a rich environment by configuring a network even in a small area. ing.
[0005]
An object of the present invention is to provide a rooftop greening system capable of developing such a biotope theme for rooftop greening and effectively utilizing rainwater stored in a water storage area such as a pond.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a rooftop greening system according to the present invention is a rooftop greening system in which a planting base is formed on the rooftop of a building, and plants are planted on the planting base to green the rooftop.
A water storage region for storing rainwater formed on a part of the roof;
A water storage / irrigation tank embedded in a planting area where a plant is planted on the planting base, and supplying water to the plant by capillary action;
An overflow water storage device connected to the water storage area and the water storage / irrigation tank and storing water overflowed in the water storage area in the water storage / irrigation tank.
[0007]
According to the present invention, a water storage region for storing rainwater is formed on a part of the roof, a water storage / irrigation tank is embedded in the planting region, and water overflowed in the water storage region by the overflow storage device is stored in the water storage / irrigation tank. By storing water in the planting plant, water can be supplied to the plant planted on the plantation base from the water storage / irrigation tank by capillary action to irrigate the plant, thereby effectively utilizing rainwater.
[0008]
In addition, when the water storage area is filled with water, it is possible to form a space where people and organisms coexist on the rooftops of buildings in urban areas, thereby contributing to the conservation and restoration of natural ecosystems.
[0009]
In the present invention, an automatic water supply device is provided that is connected to the water storage / irrigation tank and supplies water to the water storage / irrigation tank when the water in the water storage / irrigation tank falls below a predetermined water level. it can.
[0010]
By adopting such a configuration, for example, when there is no rainfall for a long time and the water in the water storage / irrigation tank decreases and falls below a predetermined water level, water is supplied from the automatic water supply device to the water storage / irrigation tank. Thus, it is possible to constantly irrigate and prevent plant depletion.
[0011]
In the present invention, a pond can be provided as a water storage region for storing the rainwater.
[0012]
By adopting such a configuration, a landscaped garden can be formed by the pond, and the existence of the pond can further conserve and restore the natural ecosystem.
[0013]
In this case, an outflow portion of water is provided at a position higher than the pond, the outflow portion and the pond are connected by a flow channel, and the water of the pond is supplied to the outflow portion from the outflow portion. Water can flow down to the pond through the flow channel.
[0014]
By adopting such a configuration, it is possible to form a stream of a stream that flows through a flowing water channel, and to further contribute to the conservation and restoration of ecosystems of organisms that inhabit birds and streams.
[0015]
Moreover, when providing such a pond, the pond water automatic replenishment apparatus which supplies water when the water of a pond becomes below a predetermined water level can be provided.
[0016]
By adopting such a configuration, for example, even when there is no rainfall for a long period of time and the pond water falls below a predetermined water level, the pond water can be kept at a predetermined water level by supplying water from the pond water automatic replenishing device.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0018]
1-3 is a figure which shows the rooftop greening system which concerns on one embodiment of this invention.
[0019]
FIG. 1 is an external plan view of the rooftop greening system. On the rooftop 10 of this building, a stairway 14 leading to the entrance 12 to the rooftop 10 is provided on the left side of the figure. On the right side in the figure, a pergola 16 is installed.
[0020]
A pond 18 is provided from the pergola 16 to the approximate center of the roof 10 as a water storage area for storing rainwater.
[0021]
Further, a bird bath 20 is provided as a water outflow portion at a position higher than the pond 18 on the left side away from the pond 18, and the bird bath 20 and the pond 18 are connected to a stream 22 serving as a flowing water channel. It is in a state of being tied.
[0022]
A planting base 24 is provided around the pond 18, the bird bath 20, and the creek 22, and an observation passage 26 extending from the entrance 12 to the pergola 16 across the creek 22 is disposed thereon.
[0023]
Around this observation passage 26, pergola 16, pond 18, bird bath 20, and creek 22, a planting region 32 in which plants such as trees 28 and flowers 30 are planted is provided.
[0024]
FIG. 2 shows a partial schematic plan view showing the internal system with the planting base 24 removed, and FIG. 3 shows a schematic longitudinal sectional view of the planting region.
[0025]
As shown in FIG. 3, in the planting base 24, a root prevention sheet 36 is laid on a roof slab 34 of a building, a drainage layer 38 is formed thereon, and a permeable sheet 40 is laid on the drainage layer 38. The soil 42 is formed on the water-permeable sheet 40.
[0026]
As shown in FIG. 2, the drainage layer 38 guides drainage to the roof drain 44.
[0027]
A large number of water storage / irrigation tanks 48 are connected to the pond 18 via an overflow water storage device 46.
[0028]
The overflow water storage device 46 includes an overflow tank 50 embedded in the soil 42, a communication pipe 52 that connects the overflow tank 50 and the pond 18, and an overflow pipe 54 that connects the overflow tank 50 and the water storage / irrigation tank 48. have.
[0029]
A filter cap 56 is attached to the tip of the communication pipe 52, and pond water is introduced into the overflow tank 50 so that the water level in the overflow tank 50 matches the water level in the pond 18.
[0030]
A charcoal filter 58 is provided in the overflow tank 50 to purify the water taken into the overflow tank 50.
[0031]
In the overflow pipe 54, the opening end 60 in the overflow tank 50 is set at the highest water level HWL of the pond water, and a filter cap 62 is provided at the opening end 60.
[0032]
Accordingly, the water in the pond 18 and the overflow tank 50 rises due to rain, and overflows into the overflow pipe 54 in a state exceeding the maximum water level HWL. The overflowed rainwater flows into the storage / irrigation tank 48 through the overflow pipe 54. And stored.
[0033]
The rainwater flowing into and stored in the water storage / irrigation tank 48 is soiled in accordance with the water content of the upper soil 42 by a irrigation system utilizing capillary action from a plurality of watering units 64 provided in the water storage / irrigation tank 48. Water is automatically supplied into the water 42 so that the plants are irrigated.
[0034]
Therefore, it is possible to prevent plant depletion by effectively using rainwater.
[0035]
The water / irrigation tank 48 at the end is connected to an automatic water supply device 66 so that water can be supplied to the water / irrigation tank 48 when pond water overflow due to rainfall cannot be expected.
[0036]
The automatic water feeder 66 has a water tap 70 attached in a replenishing tank 68 and a ball tap 72 attached to the water tap 70.
[0037]
The replenishing tank 68 and the water storage / irrigation tank 48 are connected by two communication pipes 74 a and 74 b so that the same water level as that of the water storage / irrigation tank 48 can be maintained.
[0038]
When the water in the water storage / irrigation tank 48 reaches a low water level LWL, the ball tap 72 is lowered to open the water tap 70 and water is supplied up to the average water level WL to maintain the average water level WL.
[0039]
When the pond water overflows due to rain, the water level in the replenishing tank 68 rises to the maximum water level HWL, and when the water level exceeds this level, the water is drained from the overflow hole 76 formed in the replenishing tank 68 and guided to the roof drain 44. ing.
[0040]
The water supply by the automatic water supply device 66 may use tap water or may be supplied from an auxiliary tank that stores rainwater.
[0041]
Therefore, for example, when there is no rainfall for a long period of time and the water in the water storage / irrigation tank 48 decreases, water is supplied from the automatic water supply device 66 to the water storage / irrigation tank 48 so that the plant can be constantly watered. Can be depleted.
[0042]
Further, as shown in FIG. 2, the pond 18 and the bird bath 20 are connected by a pipe 78, and the pond water is assembled to the bird bath 20 by the pump 80, and the brook 22 flows down from the bird bath 20 to the pond 18. It tries to circulate.
[0043]
As a result, the stream of the stream can be formed by the flowing water, which can further contribute to the conservation and restoration of the ecosystem of the organisms that inhabit the birds and the stream.
[0044]
The circulation of the pond water by the pump 80 may be continued for 24 hours, or after the circulation by the fixed time pump 80, the pump 80 may be stopped at night, for example.
[0045]
When the fixed-time pump 80 is stopped, the remaining water from the bird bath 20 to the brook 22 flows down to the pond 18 after the pump 80 stops and overflows, and excess water is discharged from the roof drain 44. It will be.
[0046]
Therefore, when the pump 80 is restarted, the water level of the pond 18 is lowered.
[0047]
Therefore, a pond water automatic replenishing device 82 having the same configuration as the automatic water supply device 66 is provided in the vicinity of the pump 80, and when the water in the pond 18 falls below a predetermined water level (low water level LWL), the water level is supplied by supplying water. It is good to keep.
[0048]
The difference H between the low water level LWL and the highest water level HWL is set to 10 mm, for example.
[0049]
The power of the pump 80 that circulates the water can be made economical and environmentally friendly by using wind power or solar power generation.
[0050]
In this way, a pond 18, a bird bath 20, and a stream 22 are provided on the rooftop 10 of the building, and plants such as trees 28 and flowers 30 are planted to create a state where people can come into contact with nature, and urban life. A person who feels peaceful through the five senses such as “watching the changing seasons”, “hearing the voices of insects and birds, the flow of water”, “touching flowers”, “smelling the smell of flowers”, “tasting the blessings of nature” Healing can be achieved, and it is possible to realize a biotope of symbiosis between humans and living things in the city, conservation and restoration of natural ecosystems.
[0051]
The present invention is not limited to the embodiment described above, and can be modified into various forms within the scope of the gist of the present invention.
[0052]
For example, in the above-described embodiment, the pond is formed as the water storage area. However, the water storage area is not limited to this example, and may be a pool or a water storage area that can store a predetermined amount of water in some form.
[0053]
Further, although the bird bath is provided as the water outflow portion, the present invention is not limited to the bird bath, and any other device can be adopted as long as water can flow out.
[0054]
Furthermore, although the thing which raised the soil was used as a vegetation base, what spread | laid the block-shaped vegetation base which can hold water may be used.
[0055]
Further, although a large number of water storage / irrigation tanks are provided, it is possible to provide a single water storage / irrigation tank for the entire planting area.
[Brief description of the drawings]
FIG. 1 is an external plan view of a rooftop greening system according to an embodiment of the present invention.
FIG. 2 is a partial schematic plan view showing a state where the planting base of FIG. 1 is removed.
FIG. 3 is a schematic sectional view of a planting region.
[Explanation of symbols]
10 Rooftop 18 Pond 20 Bird Bath 22 Stream 24 Planting Base 28 Tree 30 Flower 32 Planting Area 46 Overflow Water Storage Device 48 Water Storage / Irrigation Tank 66 Automatic Water Supply Device 78 Pipe 80 Pump

Claims (5)

In the rooftop greening system that forms a plantation base on the rooftop of the building, and plantes plants on this plantation base to green the rooftop
A water storage region for storing rainwater formed on a part of the roof;
A water storage / irrigation tank embedded in a planting area where a plant is planted on the planting base, and supplying water to the plant by capillary action;
A rooftop greening system comprising: an overflow water storage device connected to the water storage area and the water storage / irrigation tank, and storing water overflowed in the water storage area in the water storage / irrigation tank. In claim 1,
A rooftop greening system that is connected to the water storage / irrigation tank and has an automatic water supply device that supplies water to the water storage / irrigation tank when the water in the water storage / irrigation tank falls below a predetermined water level. In claim 1 or 2,
A rooftop greening system, wherein a pond is provided as a water storage area for storing the rainwater. In claim 3,
An outflow portion of water is provided at a position higher than the pond, the outflow portion and the pond are connected by a flowing water channel, and the water from the pond is supplied to the outflow portion to connect the flowing water channel from the outflow portion. A rooftop greening system characterized in that water flows down to the pond. In claim 3 or 4,
A rooftop greening system, wherein a pond water automatic replenishing device is provided to supply water when the water in the pond falls below a predetermined water level.

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