JP2003274772A - Method for greening site under elevating structure by utilizing rain water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a cost required for maintaining a water supply by utilizing rain water falling on a high level road to supply the water required for plants when greening the site under an elevating structure. <P>SOLUTION: A water-collecting pit (3) for storing the rain water falling on the high level road (1) through an aqueduct (2) is installed in the site under the elevating structure, and the stored rain water is introduced to a U-slot made of a porous concrete, and installed along a retaining wall (6) of a service road (5). The water required for the plants are fed by passing the rain water through the porous slot wall of the U-slot so as to penetrate into the soil (8) of a plantation ground under the elevating structure formed in the vicinity of the U-slot. If necessary, the tip part (2a) of the aqueduct (2) is formed so as to be turned. The surface of the planted ground is covered with a nonwoven fabric, and Lippia repens is used as a greening plant. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for planting underpasses by planting them by utilizing rainwater falling on elevated roads.

[0002]

2. Description of the Related Art Conventionally, attempts have been made to plant trees under the viaduct, but the water supply required for planting is automatic irrigation using tap water, which requires a considerable amount of maintenance and management costs. Was there.

[0003]

An object of the present invention relates to greening under an overpass by planting, and by using rainwater falling on an elevated road for water supply necessary for planting, maintenance and management of water supply equipment can be achieved. It is to reduce the cost required.

[0004]

Means adopted by the present invention will be described with reference to the drawings. 1. A catchment basin (3) for storing rainwater on the elevated road (1) via a water conduit (2) is provided under the elevated structure. The stored rainwater is introduced into the U-shaped groove (7) made of porous concrete provided along the retaining wall (6) of the side road (5) by the water supply pipe (4). Permeating through the groove wall (7a) of the porous structure of the U-shaped groove, the rainwater exudes into the soil (8) of the elevated underplanting site provided adjacent to the U-shaped groove as shown by the arrow. By doing so, the water supply necessary for planting will be provided.

2. In the cold season, when anti-freezing agents and snow-melting agents are used on elevated roads, rainwater containing these chemicals is harmful to planting, so it is necessary to cut off the water. Therefore, the tip portion (2a) of the water conduit (2) is rotatably formed by a flexible joint or the like, and the broken line (2)
As shown in b), the tip portion (2a) is rotated so that the course of the rainwater to the collecting basin (3) can be converted to another drainage channel (a normal drainage channel not shown).

3. In order to prevent unnecessary evaporation of rainwater that has exuded into the soil (8), as shown in FIG. 2, the planting ground under the viaduct is covered with a nonwoven fabric (9) that has an effect of suppressing evaporation of moisture in the soil. To do.

4. As a green plant (10) under the overpass, Himeiwadareso is used.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION When dust on elevated roads, rubber powder of tires, etc. are carried along with rainwater, clogging occurs in the groove wall of the perforated U-shaped groove. Equipped with a filter on the top.

Since the amount of rainfall varies depending on the season, the amount of water supply is adjusted by operating the water supply valve provided on the water supply pipe (4). In particular, during the period when water supply to the catchment basin (3) is stopped by using antifreezing agents and snow-melting agents on the elevated roads, the water supply volume is narrowed and the rainwater stored in the catchment basin is efficiently used. To use.

In order that rainwater can be exuded and diffused from the U-shaped grooved porous wall (7a) into the planting soil (8) without interruption,
The soil quality, grain size, etc. of the soil (8) are appropriately selected.

When the amount of rainfall is large, the rainwater introduced into the U-shaped groove (7) often overflows and flows out to the planting ground. The outflowing rainwater is guided to the outlet through the side groove (11) shown in FIG.

As the non-woven fabric (9) for covering the planting ground, for example, a non-woven fabric of polylactic acid fiber made from starch as a raw material or a non-woven fabric of natural fiber such as recycled wool is used for ground cover plants. These non-woven fabrics are biodegradable, and act as weed preventers until the ground cover covers the ground, and then naturally collapse and disappear. For trees, a non-woven fabric of recycled polyester fibers is used for its permanent weed control effect. Each of the above-mentioned non-woven fabrics has an effect of suppressing the evaporation of moisture in the soil, and can reduce 50% or more of the amount of moisture evaporation when the ground is not covered. It is desirable to use a non-woven fabric having such an effect in order to efficiently use rainwater that has been led to the planting area.

The green plant (10) used in the present invention can be arbitrarily selected, and among them, Hime-iwadareso is preferable.
Since Himeiwadareso is a ground cover plant, it has a high spreading speed to cover the ground and is resistant to drying, so it withstands the delay of water supply,
It is hard to be injured by pests and blooms from May to early October, and small pink flowers bloom all over,
Useful for beautifying the road landscape.

[0014]

According to the present invention, rainwater that falls on an elevated road is used for greening under an overpass by planting, so that the cost required for maintaining and managing the water supply facility is significantly higher than that of the conventional method of using tap water. It can be reduced.

[Brief description of drawings]

FIG. 1 is an elevational view illustrating the present invention.

FIG. 2 is an explanatory view around a U-shaped groove in the present invention.

FIG. 3 is a plan view of a planted area under the viaduct according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Elevated road, 2 ... Water pipe, 2a ... Tip of water pipe, 3 ... Collection basin, 4 ... Water supply pipe, 5 ... Side road, 6 ...
Retaining wall, 7 ... U-shaped groove, 7a ... Groove wall, 8 ... Soil, 9
... non-woven fabric, 10 ... green plant, 11 ... gutter, 12 ... automobile.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A01G 13/00 302 A01G 13/00 302Z

Claims (4)

[Claims] 1. The rainwater on the elevated road (1) is transferred to a water conduit (2).
A perforated concrete U provided with a water collecting basin (3) to be stored via an underpass, and the stored rainwater is provided along a retaining wall (6) of a side road (5) by a water supply pipe (4). The groove wall (7a) having a porous structure of the U-shaped groove introduced into the groove (7).
By allowing the rainwater to permeate into the soil (8) of the elevated underplanting site provided adjacent to the U-shaped groove,
A method of greening under the viaduct by using rainwater, which is characterized by supplying water necessary for planting. 2. The route (2a) of the water conduit (2) is rotatably formed so that the course of rainwater to the catchment basin (3) can be converted to another drainage channel. The method for greening under an elevated structure using rainwater according to claim 1, wherein 3. The underfloor under rainwater use according to claim 1, wherein the planting ground under the overpass is covered with a non-woven fabric (9) having an effect of suppressing evaporation of moisture in the soil. Greening method. 4. The method of revegetation under elevated structures using rainwater according to claim 1 or 2, characterized in that Dianthus communis is used as the revegetation plant (10).