JPH0689562B2 - Rainwater permeation structure of gutter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure for permeating rainwater into the ground through a gutter.

(Prior Art) Conventionally, as a rainwater permeation structure in which rainwater permeates into the ground through gutters, there are Japanese Patent Laid-Open No. 59-91241 and Japanese Utility Model Laid-Open No. 58.
Various structures have been proposed, such as those described in JP-A-189233. In the conventional one, a filter is installed at an appropriate place so that the surface of the rainwater that penetrates into the ground will not be clogged by the soil and dirt contained in the rainwater, and the rainwater is filtered by this filter to remove the dirt and dust. After removing the water, it was allowed to penetrate into the ground through the rainwater penetration surface.

Further, as a rainwater permeation structure for preventing the deterioration of the permeation function, the one described in JP-A-63-261025 is known.

(Problems to be Solved by the Invention) However, in the conventional rainwater infiltration structure, it is indispensable to install a filter, which is disadvantageous in terms of cost, and a great deal of labor is required to replace the filter. However, there is a problem that it is not practical.

Further, in the conventional technology for preventing the deterioration of the permeation function, a mud chamber is formed and sediment is deposited there. In this case, the structure is formed only for forming the mud chamber. There is a problem that it becomes complicated and it takes time to remove the sediment.

The present invention focuses on the above-mentioned conventional problems, without using a filter and without forming a mud chamber, by utilizing the natural flow of rainwater flowing through the gutter to remove soil and the like. An object of the present invention is to provide a rainwater infiltration structure of a gutter capable of allowing rainwater to infiltrate into the ground from the rainwater infiltration surface while preventing clogging of the rainwater infiltration surface by flushing.

(Means for Solving the Problems) In order to achieve the above object, in the rainwater infiltration structure of the present invention, a rainwater vortex flow chamber is formed on a side portion of the gutter, and the rainwater vortex flow chamber flows in from the gutter. The opening is formed so as to face the side wall bottom side of the gutter so that the rainwater generates a swirl, at least a part of the bottom surface and the upright surface of the rainwater flow chamber is formed on the rainwater permeation surface, and The top surface is configured as a sediment stop surface that prevents the sediment from falling from the upper stratum.

(Operation) In the rainwater infiltration structure of the present invention, rainwater flowing in the gutter flows into the rainwater swirl flow chamber from the opening along the side wall, and a part of the rainwater that has flowed into the rainwater swirl flow chamber is discharged from the rainwater infiltration surface. Penetrates into the ground.

Further, the rainwater that has flowed into the rainwater vortex flow chamber flows in a vortex here and flows out from the opening. That is, since the opening portion of the rainwater swirl flow chamber is formed facing the side wall bottom side portion of the gutter, the rainwater flowing in the gutter flows into the rainwater swirl flow chamber through the opening portion and again flows out through the opening portion. Therefore, rainwater will flow in a vortex in the rainwater swirl chamber.

Therefore, sediment and the like are washed away and carried away by riding on this swirl of rainwater, which prevents sediment from accumulating in the rainwater swirl chamber and prevents clogging of sediment on the rainwater permeation surface. Therefore, the permeability of rainwater from the rainwater permeation surface to the ground can be maintained for a long time.

Also, since the upper surface of the rainwater swirl chamber is formed as a sediment stop surface, sediment does not fall into the rainwater swirl chamber from the stratum above the rainwater swirl chamber, preventing sediment accumulation and clogging. it can.

(Examples) Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

First, the configuration of the embodiment will be described.

1 and 2 show a rainwater permeation structure of an embodiment of the present invention, in which 1 is a gutter.

In the gutter 1, upper portions of both left and right side walls 11, 11 are beam portions 12, 12, respectively.
The gutter block 10 having an open bottom surface is used by being connected by, and the gutter block 10 is installed on the base concrete layer 21.
A bottom concrete layer 22 is formed on 21. still,
13 is a gutter lid.

Further, an opening 30 cut out from the lower end is formed on the bottom side of the side wall 11 of the gutter block 10, and a rainwater swirl chamber 3 is formed in the ground continuously from the opening 30.

The rainwater vortex flow chamber 3 has an arc-shaped upright surface 31, a bottom surface 32, and
Surrounded by the upper surface 33, the upright surface 31 and the bottom surface 32 are formed on the rainwater permeation surface 4, and the upper surface 33 is formed on the earth retaining surface 5 that prevents the earth and sand from falling from the upper stratum.

Further, the rainwater vortex flow chamber 3 has an outer shape formed by a frame member 34,
In addition, a net 40 is stretched on the standing surface 31 serving as the rainwater permeation surface 4 in order to obtain rainwater permeability while preventing landslides, and the bottom surface 32 serving as the rainwater penetration surface 4 is left open. In addition, the upper surface 33 which becomes the earth retaining surface 5 is covered with the concrete layer 50.

In addition, the upper surface 31 is inclined outward so as to prevent landslide, and the bottom surface 32 is inclined downward toward the opening 30 so that the rainwater flows smoothly. .

Next, the operation of the embodiment will be described.

In the rainwater permeation structure of the present embodiment, rainwater flowing in the gutter 1 flows into the rainwater swirl flow chamber 3 through the opening 30, and a part of the rainwater permeates into the ground from the vertical surface 31 and the bottom surface 32. It will penetrate.

Since the opening 30 is formed to face the bottom side of the side wall 11, rainwater flowing along the side wall 11 in the gutter 1 flows into the rainwater vortex flow chamber 3 through the opening 30. After that, a vortex flow that flows in a vortex shape and returns from the opening 30 to the side groove 1 is generated again.

Therefore, the sediment contained in the rainwater is washed away by the vortex and is carried along by the vortex, so that the sediment is prevented from being accumulated in the rainwater swirl chamber 3 and the sediment etc. on the rainwater permeation surface 4 is prevented. It is possible to prevent accumulation of water and clogging, and to maintain the permeability of rainwater from the rainwater permeation surface 4 into the ground for a long time. In particular, in this embodiment, this vortex flow is an arc-shaped vertical surface 31.
Since the flow is along the vortex, the vortex flow becomes smooth, and the sediment can be effectively carried out.

Further, since the upper surface 33 of the rainwater swirl chamber 3 is formed on the sediment stop surface 5, there is no possibility that the earth and sand fall into the rainwater swirl chamber 3 from the formation above the rainwater swirl chamber 3.
It is possible to prevent sedimentation and clogging.

Next, FIG. 3 to FIG. 8 show another example of the rainwater vortex flow chamber in plan view.

The rainwater swirl flow chamber 3 in FIG. 3 is an example in which the inner space 3a is formed in a square shape. In the rainwater swirl flow chamber 3 in FIGS. 4 and 5, the back space 3b is wider than the opening space 3c. Examples, Figures 6 and 7
The rainwater vortex flow chamber 3 in the figure is an example in which the opening side space 3c is wider than the back side space 3b, and the rainwater vortex flow chamber 3 in FIG.
This is an example in which a column 35 is formed on 30.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration of the present invention is not limited to the above embodiments.

For example, the side groove may be a U-shaped side groove block or may be a three-sided side groove.

Further, the rainwater permeation surface may be formed wholly or partially on both the vertical surface and the bottom surface of the rainwater vortex flow chamber, or may be formed wholly or partially on either the vertical surface or the bottom surface. Good.

Further, the frame material forming the rainwater swirl flow chamber may be formed using concrete, metal, or resin, or the entire rainwater swirl flow chamber is formed in a box shape to serve as a rainwater permeation surface. May be just opened, in this case, in order to prevent landslides from the surrounding strata, the opening to be the rainwater permeation surface is formed with a large number of small holes or slit holes, or a member having water permeability, for example, a net. The rainwater permeation surface may be formed of a water-permeable sheet or a water-permeable concrete.

In addition, crushed stones and crushed stones may be installed on the stratum surface facing the rainwater infiltration surface.

In addition to the concrete layer, a water impermeable member such as a concrete plate, a synthetic resin plate, or a synthetic resin sheet may be used for the earth and sand stop surface formed on the upper surface of the rainwater vortex flow chamber, which can prevent landslides. If so, a water-permeable net or sheet or water-permeable concrete may be used. still,
If the entire rainwater vortex flow chamber is formed of water-permeable concrete into a box shape, the vertical surface and the bottom surface are formed into the rainwater permeation surface and the upper surface is formed into a sand retaining surface.

(Effects of the Invention) As described above, in the rainwater infiltration structure of the gutter of the present invention, the rainwater that has flowed into the rainwater swirl flow chamber swirls here, and the swirls wash away the earth and sand and the like. Then, since it is carried out, sedimentation of sediment etc. is prevented in the rainwater swirl chamber, and clogging of sediment on the rainwater infiltration surface is prevented.

Therefore, unlike the conventional case, the filter is not necessary and the filter is not required to be replaced.

In this way, the natural flow of rainwater flowing through the gutters can be used to prevent the accumulation of sediment, etc., so unlike the conventional mud chamber formation, a simple structure can prevent deterioration of the infiltration function. It is possible to solve the problem that it takes time to remove the sediment deposited in the mud chamber.

Also, since the upper surface of the rainwater swirl chamber is formed as a sediment stop surface, sediment does not fall into the rainwater swirl chamber from the stratum above the rainwater swirl chamber, preventing sediment accumulation and clogging. The effect of being able to be obtained is obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a rainwater infiltration structure of an embodiment of the present invention,
FIG. 2 is a cross-sectional view showing the rainwater infiltration structure, and FIGS.
The figure is a plan view showing another example of the rainwater vortex flow chamber. 1: Gutter 3: Rainwater vortex flow chamber 30: Opening 31: Elevation 32: Bottom 33: Top 4: Rainwater seepage 5: Sediment stop

Claims (1)

[Claims] 1. A rainwater vortex flow chamber is formed on a side portion of the gutter, and the rainwater vortex flow chamber has an opening facing a side wall bottom side of the gutter so that rainwater flowing from the gutter generates a swirl. At least a part of the bottom surface and the vertical surface of the rainwater flow chamber is formed as a rainwater permeation surface, and the upper surface of the rainwater flow chamber is formed as a sediment stop surface that prevents the sediment from falling from the upper stratum. Rainwater infiltration structure of the gutter, which is characterized by that.