JP2010031588A - Infiltration basin, infiltration side ditch, and infiltration device using these - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To develop an infiltration basin which prevents lowering of a drainage function caused by single-grain-sized crushed stones closing drain holes, and reduces degradation of the strength of a side wall due to a sectional defect. <P>SOLUTION: A groove is formed in an outer surface of the side wall, and a plurality of drain holes are formed on a bottom face of the groove. The width of the groove formed on the surface of the side wall is made smaller than a nominal diameter of the single-grain-sized crushed stones filling the outer periphery of the infiltration basin, preventing the drainage function from lowering caused by the single-grain-sized crushed stones closing the drain holes, with a reduction in degradation of the strength of the side wall due to the sectional defect. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an infiltration trough for infiltrating rainwater, domestic wastewater, and the like into the ground, an infiltration side ditch, and an infiltration device using these.

In the current situation where urbanization is progressing and roads and sites are paved over a wide area, seepage dredging and seepage gutters that allow rainwater and domestic wastewater to penetrate into the ground are laid to prevent floods and groundwater levels from falling. .
This type of penetrating soot is disclosed in, for example, Patent Documents 1 and 2 below.
The permeation trough of the following Patent Document 1 is provided with a large number of drain holes on the side wall and allows water inside the trough to permeate the surrounding soil (crushed stone) through the drain holes.
The penetrating gutter of the following Patent Document 2 is provided with a long hole in the vertical direction on the side wall, and water inside the gutter penetrates into the surrounding soil (crushed stone) through the long hole.
In addition, there is a type in which all or part of the side wall is made of porous concrete and water is permeated to the outside from the porous concrete.
Patent Document 3 below discloses a technique in which a dish-like filter that removes dust is supported while being mounted between a lid cover portion of a jar or between an edge lump and a side lump.
JP 2004-169295 A JP-A-8-291552 Utility Model Registration No. 3056298

As shown in the above-mentioned Patent Document 1, a permeation trough having a large number of drain holes on the side wall is the most common. FIG. 10 shows a cross section of the side wall 2 of this type of seepage trough. A large number of drain holes 24 are provided in the side wall 2, and the single-grain crushed stone 14 is filled outside the side wall 2. Therefore, the single-grain crushed stone 14 adheres to the outside of the drain hole 24, the drain hole is blocked, and the drainage function may be significantly reduced. In the figure, the single-grain crushed stone 14 is not in close contact with the central drain hole 24, but the single-grain crushed stone 14 is in close contact with the upper and lower drain holes 24 '.
As described above, the seepage trough having a large number of drain holes on the side wall has a problem that the drain holes are blocked with single-grain crushed stones, and the drainage function may be significantly deteriorated.

  As shown in the above-mentioned Patent Document 2, the permeation pit provided with a long hole in the vertical direction on the side wall is not likely to be completely blocked with single-grain crushed stone, but by providing a large number of long holes, The cross-sectional defect is remarkable and the strength is reduced. In order to compensate for the strength reduction of the side wall, the thickness of the side wall has to be increased, and there is a problem that the weight of the penetrating ridge increases and the transportation and workability deteriorate.

  When the permeation gutters with all or part of the side walls made of porous concrete are installed and time passes, the voids that existed in the porous concrete are blocked by sediment particles and small dust, and the drainage function is significantly reduced. There's a problem. In addition, since the deterioration of the drainage function is hardly improved by maintenance, the drainage function cannot be exhibited during torrential rain unless the seepage gutter is periodically replaced, and there is a high possibility of flooding.

  The filter of Patent Document 3 is a dish-shaped filter having a large number of small holes, and prevents relatively large dust such as dead leaves from entering the permeation tub and blocking the drain hole from the inside. Since this filter is mounted in the bag while being supported between the lid receiving part of the bag or between the edge block and the side block, there is a problem that it can be mounted only in a shallow portion of the upper part of the bag. This is because when an inflow pipe such as rainwater is connected to the seepage trough, it is desirable to mount the filter below the inflow pipe. In addition, when the filter is supported between the edge block and the side block, there is a problem that it is difficult to remove the filter and clean it.

An object of the present invention is to provide a permeation pit and a permeation side groove in which the drainage hole is blocked with single-grain crushed stones and the drainage function is not lowered, and the side wall strength is less lowered due to a cross-sectional defect.
Another object of the present invention is to easily attach a dust removal filter for preventing dust such as dead leaves from entering the basket at a desired height, and to easily remove and clean the filter.

[Claim 1]
The present invention relates to a permeation trough having a cylindrical side wall extending in the vertical direction, wherein a groove is formed on the outer surface of the side wall, and a plurality of drainage holes are opened on the bottom surface of the groove, and the surface of the side wall of the groove The width of the osmotic cocoon is equal to or smaller than the nominal diameter of the single-grain crushed stone filled in the outer periphery of the osmotic cocoon.
The nominal diameter of the single grain crushed stone is the numerical part (unit: mm) of the nominal name of the single grain crushed stone in JIS A 5001-1988.

[Claim 2]
Moreover, the present invention is the seepage rod according to claim 1, wherein the groove is formed in a vertical direction or a horizontal direction.
By forming the grooves in the vertical direction, the efficiency with which the water inside the bottle diffuses outwards is improved.
By forming the grooves in the horizontal direction, it may be advantageous when manufacturing the basket with the mold.

[Claim 3]
Further, in the present invention, a plurality of support rods supported by two opposite drain holes at both ends are installed in an infiltration basin, and a dust removal filter is supported on the support rods. It is a penetrating jar.

[Claim 4]
In addition, the present invention is a side groove having a tubular, U-shaped or inverted U-shaped cross section, forming a groove on the outer surface of the side wall, and opening a plurality of drain holes on the groove bottom surface. The permeation side groove is characterized in that the width of the side wall surface of the slab is equal to or less than the nominal diameter of the single-grain crushed stone filling the outside of the side groove.

[Claim 5]
Further, the present invention is the infiltration side groove according to claim 4, wherein the groove is formed in a vertical direction or a horizontal direction.
By forming the grooves in the vertical direction, the efficiency with which water inside the side grooves diffuses to the outside is improved.
By forming the grooves in the horizontal direction, it may be advantageous when manufacturing the side grooves with a mold.

[Claim 6]
Further, the present invention is an infiltration device characterized in that the infiltration basin of claim 1, 2 or 3 is embedded in the ground, and the outer periphery of the side wall is filled with single-grain crushed stone.

[Claim 7]
Further, the present invention is an infiltration device characterized in that the infiltration side groove according to claim 4 or 5 is embedded in the ground, and the outside of the side wall is filled with single-grain crushed stone.

FIG. 9 shows a cross section of the side wall 2 of the seepage trough or seepage side groove of the present invention. A vertical groove 4 is formed in the side wall 2, and a plurality of drain holes 5 are opened in the bottom surface (surface of the ridge) of the groove 4. The width of the groove 4 on the side wall surface (outer surface) is equal to or smaller than the nominal diameter of the single-grain crushed stone 14 that fills the outside of the seepage trough or the seepage side groove.
For this reason, as shown in the figure, a part of the groove 4 is blocked by the crushed stone 14, but most of the groove is not blocked. Further, the drain hole 5 is hardly blocked by the crushed stone 14. Therefore, almost all the drain holes 5 exhibit the drainage function and are not clogged with crushed stone, so that the drainage function does not deteriorate. Furthermore, since water can flow through the groove 4, the water discharged from the drain hole 5 into the groove 4 permeates into the crushed stone in a large amount from the crushed stone portion having excellent permeability, and the drainage efficiency becomes very high. .

  FIG. 5 shows the seepage trough 1 of the present invention equipped with a filter 8. Since the filter 8 is supported on a support rod whose both ends are supported by two opposing drain holes 5, the mounting height can be easily adjusted depending on the height of the drain hole through which the support bar is inserted. And can be easily provided below the tube hole 7 of the inflow pipe. Moreover, when cleaning, it can be easily removed by lifting with the handle 10 and can be easily remounted after cleaning.

The seepage trough and the seepage side groove of the present invention have a possibility that the drainage hole is clogged with single-grain crushed stone and the drainage function is not lowered, and the water discharged from the drainage hole moves into the groove and has excellent permeability. Since the drainage efficiency is very high because it penetrates into the crushed stone in a large amount from the part, it is excellent in drainage during heavy rain and contributes to prevention of flood. Furthermore, since the cross-sectional defect | deletion by a groove | channel is few, it is excellent also in intensity | strength and can be made lightweight compared with what formed the conventional long hole.
In addition, the osmosis rod of the present invention makes it possible to easily attach the dust removal filter to a position lower than the inflow pipe, and can easily take out the filter, clean it, and reattach it.

Hereinafter, the present invention will be described in detail with reference to the drawings showing examples.
FIG. 1 is a side view of the main body of the penetrating bowl 1, FIG. 2 is a top view of the main body of the penetrating bowl 1, FIG. 3 is a cross-sectional view taken along line AA in FIG. FIG. 6 is a cross-sectional view of a construction example of the permeation trough 1, FIG. 7 is a side view of the permeation side groove 20, FIG. 8 is a cross-sectional view along the line BB in FIG. These are sectional explanatory drawing of the groove | channel 4 and the drain hole 5 in this invention.

The seepage trough 1 of the embodiment is a reinforced concrete block having a square cylindrical side wall 2 extending in the vertical direction and an uppermost portion 3 having a large diameter at the upper end. A lid receiving portion 6 for mounting a lid such as a grating is formed inside the uppermost portion 3. Three vertical grooves 4 are formed on the side walls 2 of all four surfaces. The groove 4 has a taper shape whose width increases toward the outside due to die cutting. The width (hereinafter simply referred to as “width”) on the side wall surface (outer surface) of the groove 4 is equal to or less than the nominal diameter of the single-grain crushed stone filling the outer periphery of the seepage trough. For example, when S-30 single-grain crushed stone is used, the groove width is 30 mm or less, and when S-40 single-grain crushed stone is used, the groove width is 40 mm or less.
The shape (in front view) of the groove 4 is not limited to the rectangle of the present embodiment, and for example, the upper end and / or the lower end may be semicircular or semielliptical.
Drain holes 5 are opened at the bottom surface (the back surface) of each groove 4 so as to communicate with the inside and outside of the ridge in a line at substantially equal intervals in the vertical direction. The drain hole 5 also has a tapered shape whose diameter increases toward the outside due to the die cutting. The maximum diameter of the drain hole 5 is substantially equal to the minimum width of the groove 4.

A support bar 11 can be inserted into two opposing drain holes 5 of the seepage trough 1, and the dust removal filter 8 can be supported and attached by this support bar. In the example shown in FIG. 5, the support rod 11 is inserted into the fourth drainage hole 5, and both ends of the support rod 11 are supported by the drainage holes 5. As shown in phantom lines in FIG. 2, it is desirable to provide the two support bars 11 at the same height.
In FIG. 5, the main body of the seepage rod 1 is provided with a tube hole 7 for connecting an inflow pipe such as rainwater, and the dust removal filter 8 is mounted on the lower side (that is, lower than the inflow pipe). Yes. The tube hole 7 may be drilled in the field, may be drilled in the factory, or may be provided in advance when the block is manufactured.
Since the support rod 11 can be inserted into a drainage hole having an arbitrary height, the dust removal filter can be mounted at an arbitrary height.
The material of the support rod 11 is free, but can be made of metal, plastic, or the like, for example.

As shown in FIGS. 4 and 5, the dust removal filter 8 has a plate shape made of metal such as an iron plate, and has a large number of small holes (through holes). A handle 10 is provided in the central portion. The dust removal filter 8 can be easily mounted by attaching the support rod 11 to the bag and then inserting the support rod 11 into the bag with the handle 10 from above. When cleaning, the handle 10 may be pulled up.
The material of the dust removal filter is not limited to metal, but may be plastic, concrete, or a combination thereof.
Moreover, as a dust removal filter, not only the dish shape of an Example but a bottomed cylindrical shape with a flange part, a bag shape, etc. can be used, for example. In the former, the cylindrical peripheral wall portion and / or the bottom surface portion has a filter structure, and in the latter, the material of the bag is in a filter shape, and both can be mounted in the bag by supporting the flange portion with a support rod.

The penetration rod 1 of the embodiment can be constructed, for example, as shown in FIG.
The seepage trough 1 can be used alone, but in this case, it is used by being stacked on the side block 13. The side lump 13 lacks the uppermost portion 13 of the seepage trough 1 and has the same rectangular tube shape as the seepage trough 1, and the same groove 4 and drain hole 5 are formed on the side wall. Thus, by using with the side lump 13, the capacity | capacitance of a seepage can be increased and the flood prevention effect at the time of heavy rain can be heightened more. A bottom lump can be further installed below the side lump 13 (see, for example, Patent Document 1). In this case, sand is spread as a filter 15 at the bottom without using the bottom lump.
A rainwater inflow pipe 12 is connected to the seepage trough 1.
Single-grain crushed stones 14 are filled in the outer periphery of the side wall 2 of the seepage trough 1 and the side lump 13. The width of the groove 4 is equal to or smaller than the nominal diameter of the single-grain crushed stone 14.
A water-permeable sheet 16 is provided outside the single-grain crushed stone 14, and the outside is soil 17. The surface of the soil 17 may be a paved surface.

  Rainwater or the like that has flowed into the seepage trough 1 penetrates the single-grain crushed stone 14 through the drain holes 5 and the grooves 4, and further penetrates the soil 17 through the water-permeable sheet 16. Further, it penetrates into the soil 17 from the bottom through the filter 15 and the water permeable sheet 16.

7 and 8, the infiltration side groove 20 is a reinforced concrete block, and is formed in a square cylindrical shape by two opposing side walls 21, an upper plate portion 22 connecting them at the upper portion, and a bottom plate portion 23 connecting them at the lower portion. This is a so-called culvert-type side groove formed integrally with the. Six vertical grooves 4 are formed in the left and right side walls 2. The groove 4 has a taper shape whose width increases toward the outside due to die cutting. The width of the groove 4 (outer side wall surface) is equal to or smaller than the nominal diameter of the single-grain crushed stone filling the outside of the side groove.
Drain holes 5 are opened on the bottom surface (the back surface) of each groove 4 so as to communicate with the inside and outside of the side groove in a line at substantially equal intervals in the vertical direction. The drain hole 5 also has a tapered shape whose diameter increases toward the outside due to the die cutting. The maximum diameter of the drain hole 5 is substantially equal to the minimum width of the groove 4.

  The side groove 20 is buried in the ground and filled with single-grain crushed stone on the outside of the side wall, whereby the infiltration device of the embodiment can be obtained.

The penetration side groove of the present invention is not limited to the culvert type side groove of the embodiment, and may be a U-shaped or inverted U-shaped side groove.
The U-shaped side groove is a so-called U-shaped groove formed by connecting and integrating the lower portions of two opposing side walls with a bottom plate portion.
The inverted U-shaped side groove is a so-called free-gradient side groove in which upper portions of two opposing side walls are connected and integrated by an upper plate portion.

In the present embodiment, the penetrating rod is a rectangular tube shape, but may be configured to have other cross-sectional shapes such as a cylindrical shape.
Further, the drainage hole is not limited to the circular cross section of the embodiment, but may be an elliptical cross section, a square cross section, or the like.

FIG. FIG. 3 is a top view of the seepage trough 1. It is the sectional view on the AA line in FIG. It is a top view of a dust removal filter. It is sectional drawing of the osmosis | permeation basket 1 equipped with the dust removal filter. It is a cross-sectional explanatory view of a construction example of the seepage trough 1. 3 is a side view of a permeation side groove 20. FIG. It is the BB sectional view taken on the line in FIG. It is sectional explanatory drawing of the groove | channel 4 and the drain hole 5 in this invention. It is sectional explanatory drawing of the drain hole in the conventional osmosis | permeation trough.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Permeation trough 2 Side wall 3 Top part 4 Groove 5 Drain hole 6 Lid receiving part 7 Tube hole 8 Dust removal filter 9 Small hole 10 Handle 11 Support rod 12 Inflow pipe 13 Side lump 14 Single grain crushed stone 15 Filter 16 Permeable sheet 17 Soil 20 Permeation side groove 21 Side wall 22 Upper plate portion 23 Bottom plate portion 24 Drain hole

Claims (7)

  In the seepage trough having a cylindrical side wall extending in the vertical direction, a groove is formed on the outer surface of the side wall, and a plurality of drainage holes are opened on the bottom surface of the groove, and the width of the groove on the side wall surface is An osmotic cocoon having a diameter equal to or smaller than a nominal size of the single-grain crushed stone filled in the outer periphery of the osmosis cocoon.   The seepage trough according to claim 1, wherein the groove is formed in a vertical direction or a horizontal direction.   The permeation gutter according to claim 1 or 2, wherein a plurality of support rods supported by the two drain holes opposed to each other are installed in the permeation gutter and the dust removal filter is supported on the support rod.   A side groove having a cylindrical, U-shaped or inverted U-shaped cross section, having a groove formed on the outer surface of the side wall and having a plurality of drain holes formed in the groove bottom surface, the width of the groove on the side wall surface The permeation side groove, which is smaller than the nominal diameter of the single-grain crushed stone filled outside the side groove.   The permeation side groove according to claim 4, wherein the groove is formed in a vertical direction or a horizontal direction.   An infiltration device characterized in that the seepage trough according to claim 1, 2 or 3 is buried in the ground, and the outer periphery of the side wall is filled with single-grain crushed stone.   6. A permeation apparatus characterized in that the permeation side groove of claim 4 or 5 is buried in the ground, and a single-grain crushed stone is filled outside the side wall.

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