JPH11152785A - Infiltration, facility having water-retention structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an infiltration facility having water-retention structure jointly having a water-retention function capable of retaining moisture contributing to the rearing of planting and an infiltration function infiltrating rainwater, etc., to a ground by conducting planting to an expressway and the medial strip and side ditch, etc., of a general road. SOLUTION: Planting 8 is executed to a ground 1 in the upper section of water-retention structure A consisting of an infiltration pipe 5, a crushed-stone element 4, in which the infiltration pipe 5 is housed, an impermeable sheet element 3 surrounding the lower section and side sections of the crushed-stone element 4 and a permeable sheet element 6 surrounding the upper section of the crushed-stone element 4. The infiltration facility is constituted by installing an impervious concrete board 7 shielding water in sections among the water- retention structure A and the ground 1 in the upper section of the water- retention structure A and a subbase course 2b and separating these structure A and ground 1 and subbase course 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infiltration facility having a water retention structure, and more particularly to an infiltration facility having a water retention structure suitable for planting on a median strip or a gutter of an expressway or a general road. It is.

[0002]

2. Description of the Related Art Conventionally, as an example of planting a median strip or a gutter on a road, a technique disclosed in Japanese Patent Application Laid-Open No. 62-268429 shown in FIG. 11 has been proposed. In this conventional example, multifunctional pipelines 53, 53 are constructed on both sides of a median strip 52 of roads 51, 51, and a plant 63 is applied to a ground surface 62a of a ground 62 at the center of the composite functional pipelines 53, 53. Have been.

[0003] The multifunctional conduit 53 is a communication line such as a water pipe, a gas pipe, a telephone line made of a metal wire or an optical fiber, a cable TV line, a data communication line, and the like, and a transmission line such as a transmission and distribution line.
An accommodation hole 55 that accommodates 54, a water passage hole 57 through which domestic wastewater or sewage 56 flows, and a water passage hole 59 through which factory wastewater 58 flows.
And a water passage slot 61 through which the rainwater 60 flows are provided separately.

A bottom opening 61a is provided at the bottom of the water passage slot 61.
The rainwater 60 that has fallen on the road 51, which is paved with a downward slope toward the median strip 52, is guided by the gradient of the road 51 and flows into the water channel 61, where the ground 62 Part or all of the rainwater 60 penetrates into the ground 62 from the bottom opening 61a according to the nature, water retention and the like. As a result, the groundwater level is maintained at a necessary and sufficient level, and groundwater is replenished as an important water source.

The remaining rainwater 60 that has not returned to the ground 62 is drained to a sewage main pipe to which the multifunctional conduit 53 is connected, a river, a lake or a sea, or the sea. Ground of median strip 52
The ground surface 62a of 62 is provided with a natural landscape and a planting 63 for absorbing exhaust gas, and the ground on which the planting 63 is provided.
The rainwater 60 that has fallen on the ground surface 62a of the 62 infiltrates the ground 62 and becomes groundwater.

[0006]

However, in the above-described conventional example, the ground surface 62a of the ground 62 on which the planting 63 has been applied is formed by the boundary block 53a provided above the multifunctional conduit 53. Road 51 because it is located higher than
The rainwater 60 that has fallen on the road surface is collected in the channel 61 for water passage, and the ground below the ground 62 of the median strip 52 where the planting 63 has been applied.
Stormwater 60 that penetrates into the ground 62 of the median strip 52 where the planting 63 has been applied because it penetrates into the ground 62 or is drained to the sewer mains, rivers, lakes or the sea through the water channel 61. Are only those that have landed on the ground surface 62a of the ground 62 of the median strip 52.

Further, the permeability and water retention of the ground 62 of the median strip 52 depend on the natural geology of the ground 62, and the ground 62 of the median strip 52 has no special water retention equipment.
The rainwater 60 that has fallen on the ground surface 62a of the ground does not contribute to the growth of the planting 63 for a long time because it permeates from the ground 62 to the underground in a short period of time, It was necessary to encourage upbringing.

[0008] The present invention is to solve the above problems,
Its purpose is to provide a permeation facility with a water retention structure that has both a function of retaining rainwater for a long time and a function of permeating it.For example, in a median strip or gutter of a highway or general road, etc. It is an object of the present invention to provide an infiltration facility having a water retention structure having both a water retention function capable of retaining water contributing to the growth of planted plants and a penetration function of penetrating rainwater and the like into the ground.

[0009]

A permeation facility having a water retention structure according to the present invention for achieving the above object surrounds a water retention body capable of penetrating and retaining rainwater, and a lower part and a side part of the water retention body. A water-impermeable tank or a water-impermeable membrane and a water-permeable membrane surrounding the upper part of the water retaining body are buried in the ground, and planted on the ground on the upper part of the water retaining body.

According to the above configuration, since the upper part of the water retaining body is surrounded by the water permeable membrane, the rainwater that has fallen on the surface of the water retaining body penetrates the water permeable membrane and penetrates into the water retaining body. By enclosing the side part with an impermeable tank or an impermeable membrane, it is possible to prevent rainwater retained by the water retaining body from penetrating into the underground from the lower part or the side of the water retaining body and to retain the rainwater in the water retaining body for a long time. Since the rainwater retained in the water retaining body through the water permeable membrane can be evaporated or diffused into the ground, it is possible to promote the growth of the planting applied to the ground above the water retaining body.

In another aspect of the infiltration facility having a water retention structure according to the present invention, a water retention body capable of penetrating and retaining rainwater and a water permeability control membrane surrounding the water retention body are buried in the ground. It is characterized by planting on the ground above the water retention body.

According to the above configuration, since the water retention body is surrounded by the water permeation control membrane, rainwater that has fallen on the surface above the water retention body penetrates the water permeation control membrane and enters the water retention body. By controlling the amount of rainwater retained by the water retention body to evaporate from the periphery of the water retention body or diffuse into the ground, rainwater can be retained in the water retention body for a long time, and the rainwater retained in the water retention body via the water permeability control membrane is controlled. Since it is possible to evaporate or diffuse into the ground while controlling, it is possible to promote the growth of the planting on the ground above the water retaining body.

Further, if the water retaining body is constituted by a crushed stone element composed of a plurality of crushed stones, an infiltration tube housed in the crushed stone element, or a box housed in the crushed stone element, a void for storing rainwater can be secured. Preferred
In particular, in the infiltration pipe, rainwater can be guided in one direction, collected in manholes, trout, and the like connected to the infiltration pipe and discharged to rivers and the sea.

The infiltration facility having the water retaining structure is provided adjacent to a road, and has a water impervious plate or a water impervious film that intercepts and separates the ground of the road from the ground of the infiltration facility having the water retaining structure. It is characterized by the following.

According to the above configuration, it is possible to prevent the rainwater retained in the seepage facility having the water retention structure by the seepage control plate or the seepage prevention film from infiltrating into the lower roadbed of the road and maintain the strength of the roadbed. Can be done.

Another configuration of the infiltration facility having a water retention structure according to the present invention is a water retention body capable of penetrating and retaining rainwater, and supporting the water retention body and surrounding a lower portion and side portions of the water retention body. A unit in which a water-impermeable tank and a water-permeable membrane surrounding the upper part of the water retaining body are integrally formed in advance is buried in the ground, and planted on the ground above the water retaining body.

According to the above configuration, the water retaining body, the water-impermeable tank, and the water-permeable membrane are integrally configured in advance in a factory or the like to form a unit,
Since the unit can be transported to the site for construction, the workability is improved and the construction period can be shortened. In addition, since the integral unit can be replaced at the time of maintenance, the maintainability is good.

Further, another configuration of the infiltration facility having a water retention structure according to the present invention includes a water retention body capable of penetrating and retaining rainwater, a water permeability control membrane surrounding a lower portion of the water retention body, and a water permeation control membrane. A unit in which a water-permeable bottom plate supporting a lower portion and having a through hole, a tank composed of an impermeable side plate surrounding a side portion of the water retention body, and a water-permeable membrane surrounding an upper portion of the water retention body are previously integrated. Buried in the ground, and planted on the ground above the water retention body.

According to the above construction, the water retaining body, the water permeability control membrane, the tank, and the water permeability membrane can be integrally configured in a factory or the like in advance to form a unit, and the unit can be transported to the site for construction. And the construction period can be shortened. In addition, since the integral unit can be replaced at the time of maintenance, the maintainability is good.

When planting porous concrete containing seeds is provided above the water retaining body, planting porous concrete containing seeds is provided in advance only in the factory or the like at the top of the water retaining body. Since planting is possible, planting work on site can be omitted, so that the workability is improved and the construction period can be shortened.

Further, a concrete plate having a through hole may be placed on the water retaining body, and planting may be performed on earth or sand or crushed stone stored in the through hole.

Further, when an optical fiber cable is laid in the infiltration facility having the water retention structure, the optical fiber cable can be laid at a position relatively close to the ground surface, so that maintainability is good.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a permeation facility having a water retention structure according to the present invention will be specifically described with reference to the drawings. FIG.
Is a cross-sectional explanatory view showing a configuration of a first embodiment of a permeation facility having a water retention structure according to the present invention, FIG. 2 is a cross-sectional explanatory view showing a configuration of a second embodiment of a permeation facility having a water retention structure according to the present invention, FIG. 3 is a cross-sectional explanatory view showing a configuration of a third embodiment of a permeation facility having a water retention structure according to the present invention, and FIG. 4 is a cross-sectional description showing a configuration of a fourth embodiment of a permeation facility having a water retention structure according to the present invention. FIG. 5 and FIG. 5 are cross-sectional explanatory views showing the configuration of a fifth embodiment of a permeation facility having a water retention structure according to the present invention.
Is a cross-sectional explanatory view showing a configuration of a sixth embodiment of a permeation facility having a water retention structure according to the present invention, FIG. 7 is a cross-sectional explanatory view showing a configuration of a seventh embodiment of a permeation facility having a water retention structure according to the present invention, FIG. 8 is a cross-sectional explanatory view showing a configuration of an infiltration facility having a water retention structure according to an eighth embodiment of the present invention, and FIG. 9 is a cross-sectional description showing a configuration of a ninth embodiment of a permeation facility having a water retention structure according to the present invention. FIG. 10 is an explanatory sectional view showing a configuration of a tenth embodiment of a permeation facility having a water retention structure according to the present invention.

The infiltration facility having a water retention structure according to the present invention is a median strip or gutter of a highway or a general road constructed in a place where it is difficult to keep rainwater in the ground or where rainwater diffuses relatively quickly. It is preferable to configure the facility as such a facility, and it is advantageous for planting and the like because the ground temperature can be kept constant by the water retention without draining rainwater to keep the ground dry.

First, a configuration of a first embodiment of a permeation facility having a water retention structure according to the present invention will be described with reference to FIG. In FIG. 1, the water retention structure A of the present embodiment is based on the type of geology of the ground 1, the surrounding water environment, the climate such as rainfall and the dry season, or the type of plant to be planted on the ground 1 above the water retention structure A (for example, Road 2 at a predetermined depth in the ground 1 from the ground surface 1a of the ground 1 according to a deep rooted plant).
Buried adjacent to

In the water retention structure A, a water-impermeable sheet element 3 serving as a water-impermeable membrane is laid in a groove 1b dug at a predetermined depth in a median strip, a side gutter or the like of the road 2, and the water-impermeable sheet element A crushed stone element 4 composed of a plurality of crushed stones serving as a water retaining body capable of penetrating and retaining rainwater is accommodated inside the crushed stone element 4 so that the lower and side portions of the crushed stone element 4 are surrounded by the impermeable sheet element 3. Inside the crushed stone element 4, a permeation pipe 5 also serving as a water retaining body is accommodated. On the upper part of the crushed stone element 4, a permeable sheet element 6 serving as a water permeable membrane is laid so as to surround the upper part of the crushed stone element 4.

As the water-impermeable sheet element 3, a vinyl sheet, a fiber subjected to waterproofing, or the like can be used.

The crushed stone element 4 housed in the water-impermeable sheet element 3 has a gap of about 30% as a whole, so that rainwater can be stored and retained in the gap.

In the present embodiment, the infiltration pipe 5 housed inside the crushed stone element 4 is constituted by a cylindrical concrete pipe having a predetermined length, and has a predetermined length in four radial directions (45-degree intervals). Is formed.
The infiltration tube 5 is arranged so that its axial direction is substantially parallel to the longitudinal direction of the road 2, and the axial direction of each through hole 5 a is at an angle of 45 degrees with respect to the vertical line (or horizontal line) of the ground surface 1 a of the ground 1. And is connected so that the ends of the adjacent permeation tubes 5 are substantially in contact with each other. In addition, the through-hole 5a of the permeation tube 5 may be formed in a plurality of other directions in other directions, and is not limited to the present embodiment.

The inside of the infiltration tube 5 is hollow, and the size of the through hole 5 a is smaller than the outer shape of the crushed stone of the crushed stone element 4. It is not possible to do so, so that sufficient water can be retained in the cavity inside the permeation tube 5.

Therefore, in the water retention structure A of the present embodiment, rainwater can be stored and retained in the voids of the crushed stone elements 4 accommodated in the water-impermeable sheet element 3 and inside the permeation pipe 5. ing.

The water permeable sheet element 6 surrounding the upper part of the crushed stone element 4 is constituted by a water permeable sheet in which, for example, tetron yarns are knitted in the vertical and horizontal directions. This prevents clogging of the crushed stone element 4 caused by flowing into the crushed stone element 4 and permeation and deterioration of the water retention function due to the clogging.

The water permeability of the water permeable sheet element 6 is set to be higher than the water permeability of the ground 1, and the rainwater falling on the upper part of the water retaining structure A passes through the ground 1 and the water permeable sheet element 6 to form the crushed stone elements 4 and 4. It easily penetrates into the infiltration pipe 5, evaporates from the crushed stone element 4, and permeates and diffuses into the ground 1.

The ground 1 is formed above the water retaining structure A by using earth and sand generated when the trench 1b is dug as backfill soil. On the other hand, the road 2 has a roadbed 2b formed on the ground 1, and the roadbed 2b is densely asphalt 2c in order from the road surface 2a,
A crusher orchid 2f composed of coarse asphalt 2d, grain crushed stone 2e, and coarse crushed stone is laminated.

Between the roadbed 2b of the road 2 and the water retaining structure A and the ground 1 above the water retaining structure A, a pair of water impervious concrete plates 7 serving as a water impervious plate for intercepting and separating the two.
Are provided along the road 2. In addition, you may comprise using a water blocking film, such as a waterproof sheet, instead of a water blocking board.

The upper surface 7a of the water-impervious concrete plate 7 has the ground surface 1a of the ground 1 above the water retaining structure A and the road surface 2 of the road 2
a, and the road surface 2a of the road 2 is formed to be inclined downward toward the ground 1 above the water retaining structure A, so that it has fallen on the road surface 2a of the road 2. Rainwater is also guided to the water retention structure A.

The lower end 7b of the impermeable concrete plate 7 is set at a position deeper than the crusher run 2f provided on the lowermost layer of the roadbed 2b of the road 2. Accordingly, it is possible to prevent the rainwater retained by the water retention structure A from penetrating into the lower layer of the roadbed 2b of the road 2 and maintain the strength of the roadbed 2b of the road 2.

The ground 1 above the water retaining structure A is provided with various plants 8 such as grasses, trees, and flowers.

In the water retaining structure A, both ends in the longitudinal direction of the water-impermeable sheet element 3 are connected to a sewerage facility (not shown), and the other than the permeation pipe 5 is connected to the side shown in FIG. Similarly, if necessary, the water-permeable sheet element 3 (not shown) may be closed or may be left open. However, if it is opened, a water-permeable sheet element 6 (not shown) is laid at both ends to form the crushed stone element 4. It is preferable to surround the side part of.

According to the above configuration, the upper part of the crushed stone element 4 serving as a water retaining body is provided on the water permeable sheet element 6 serving as a water permeable membrane.
The ground 1 above the crushed stone element 4
After the rainwater that has fallen on the ground surface 1a and the road surface 2a permeates the ground 1, penetrates the permeable sheet element 6 and penetrates the crushed stone element 4 and the infiltration pipe 5, and impervious the lower part and the side of the crushed stone element 4 By being surrounded by the water impervious sheet element 3 serving as a membrane, rainwater retained by the crushed stone element 4 and the infiltration pipe 5 is prevented from penetrating into the underground from the lower part or the side of the crushed stone element 4, and the rainwater is crushed for a long time. Water can be retained in the element 4 and the permeation tube 5.

The rainwater retained in the crushed stone element 4 and the infiltration pipe 5 can be evaporated or diffused into the ground 1 through the water-permeable sheet element 6, and furthermore, a manhole (not shown) connected to the infiltration pipe 5 can be provided. Water can be collected by water or trout and discharged to rivers or the sea, or can be effectively diffused or evaporated to the ground 1 by seeping manholes or seeping mass to effectively function as a seepage facility.

Therefore, according to the water retention structure A, the rainwater permeation function is suppressed to a small extent, the diffusion of the rainwater is slowed down, and the rainwater is retained in the ground 1 for a long period of time to prevent the ground 1 from drying and the ground 1 1. Slow temperature change and water retention structure A
If the planting 8 is applied to the ground surface 1a of the ground 1 above the facility, the water necessary for growing the planting 8 can be secured from the water retaining structure A, so that the watering work is not performed on the planting 8 Well, the planting 8 can be easily managed.

Further, since the water retention structure A can be easily installed even on a relatively small site such as a median strip or a side gutter of the road 2 or a site having a complicated shape, the water retention structure A can be easily installed even on a road in an urban area where land is insufficient. And is preferred.

In the above-described embodiment, the permeation pipe 5 is provided inside the crushed stone element 4 as a water retaining body. However, instead of the permeation pipe 5 housed in the crushed stone element 4, a void is provided inside as a water retaining body. A rectangular or other polygonal box (not shown) may be housed in the crushed stone element 4. Further, even if the water retaining body is constituted only by the crushed stone element 4 without the infiltration tube 5, substantially the same effect can be obtained.

FIG. 1 shows an example in which the planting 8 employs a tree having a relatively deep root in the ground 1, so that the depth of the ground 1 above the water retention structure A is relatively deep. Although it is arranged, when the planting 8 has a relatively shallow root in the ground 1 like a flower or the like, the depth of the ground 1 above the water retaining structure A and the depth of the water retaining structure A are relatively large. It may be arranged at a shallow position.

Next, the configuration of a permeation facility having a water retention structure according to a second embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In the water retention structure B of this embodiment, as shown in FIG. 2, the outer periphery of the crushed stone element 4 serving as a water retention body is surrounded by a water permeability control sheet element 11 serving as a water permeability control membrane. The water permeability of the water permeability control sheet element 11 is set to be smaller than the water permeability of the ground 1, and the rainwater falling on the ground surface 1 a and the road surface 2 a above the water retention structure B passes through the ground 1 and the water permeability control sheet element 11. After gradually penetrating into the crushed stone element 4 and the infiltration pipe 5, the rate at which the crushed stone element 4 evaporates or permeates and diffuses into the ground 1 is controlled.

As an example of the water-permeable control sheet element 11, the vinyl sheet used as the water-impermeable sheet element 3 in the first embodiment is not provided with a plurality of through-holes having a predetermined diameter, or is not completely waterproofed. A fiber or a coarsely woven sheet can be used.

According to the above structure, the outer periphery of the crushed stone element 4 serving as a water retaining body is surrounded by the permeation control sheet element 11 serving as the water permeability control membrane, so that the ground surface 1a of the ground 1 above the crushed stone element 4 and the road 2 After the rainwater that has fallen on the road surface 2a penetrates the ground 1, the permeation control sheet element 11
Penetrates into the crushed stone element 4 and the seepage pipe 7, and the rainwater retained in the crushed stone element 4 and the seepage pipe 7 by the permeation control sheet element 11 evaporates from the periphery of the crushed stone element 4 or diffuses into the ground 1. By controlling the amount of rainwater, rainwater can be retained in the crushed stone element 4 and the infiltration pipe 7 for a long time.

In the water retention structure B, the entire both ends in the longitudinal direction of the water permeability control sheet element 11 are connected to a sewerage facility (not shown) in the same manner as described above. As in the case of the side parts shown in the figure, the water-permeable sheet element 11 (not shown) may be closed as necessary or may be left open, but if it is opened, a water-permeable sheet element 6 (not shown) is laid at both ends. It is preferable to surround the side of the crushed stone element 4 by pressing.

FIG. 2 also shows an example in which the infiltration tube 5 is accommodated in the crushed stone element 4. A rectangular or other polygonal box (not shown) having a void may be accommodated in the crushed stone element 4, or a water retaining body having only the crushed stone element 4 without the infiltration tube 5 may have substantially the same configuration. Effect can be obtained. Other configurations are substantially the same as those of the first embodiment, and similar effects can be obtained.

Next, the configuration of the third and fourth embodiments of the infiltration facility having the water retention structure according to the present invention will be described with reference to FIGS. The same components as those in the first and second embodiments are denoted by the same reference numerals, and description thereof is omitted.

In the first and second embodiments, the configuration in the case where the water retaining structures A and B are adjacent to the road 2 has been described. However, in the third and fourth embodiments shown in FIGS. If there is room for land around the median strip or shoulder of the road,
When the strength of the roadbed 2b of the road 2 can be sufficiently maintained even when the water retention structures A and B are provided, the water-impervious concrete plate 7 serving as a water-impervious plate is provided.
Alternatively, the water blocking film is omitted. Other configurations are substantially the same as those of the first and second embodiments, and similar effects can be obtained.

Next, the configuration of a permeation facility having a water retention structure according to a fifth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In the water retention structure C of the present embodiment, the water impervious tank surrounding the lower part and the side of the crushed stone element 4 serving as the water retention body is composed of the roadbed 2b of the road 2, the water retention structure C, and the ground 1 above the water retention structure C. And a U-shaped impermeable concrete plate 21 which also functions as an impermeable plate for intercepting and separating water.

In the water retaining structure C, a plurality of crushed stone elements 4 composed of a plurality of crushed stones serving as a water retaining body capable of penetrating and retaining rainwater are accommodated in a U-shaped impermeable concrete plate 21 serving as an impermeable tank. A permeation tube 5 is housed inside the crushed stone element 4, and a permeable sheet element 6 serving as a permeable membrane is laid above the crushed stone element 4.

The U-shaped impermeable concrete plate 21, crushed stone element 4, osmosis pipe 5, and permeable sheet element 6 may be constructed for each member on site, but are integrally unitized in advance in a factory or the like. By transporting the unit to the site for construction, the workability can be improved and the construction period can be shortened. Also, since the integral unit can be replaced at the time of maintenance, the maintainability is good.

The U-shaped impermeable concrete plate 21 has a predetermined length divided into a plurality in the length direction of the water retaining structure C to be installed, a width capable of surrounding the lower part of the crushed stone element 4 serving as a water retaining body, and the crushed stone. Surrounds the side of element 4 and has an upper end
21a is the road surface 2a of the road 2 and the ground 1 above the water retaining structure C
The seepage pipe 5 is also formed to have a length substantially equal to the length of the U-shaped impermeable concrete plate 21.

When the U-shaped impermeable concrete plate 21, the crushed stone element 4, the permeation pipe 5 and the permeable sheet element 6 are unitized, both ends of the U-shaped impermeable concrete plate 21 in the longitudinal direction are crushed by the crushed stone element. 4 is stably housed and a portion other than a connection portion at the longitudinal end of the infiltration pipe 5 is closed with a not-shown impermeable concrete plate in consideration of transportability, workability, and the like, and is configured in a substantially box shape. The crushed stone element 4, the permeation pipe 5, and the permeable sheet element 6 may be placed and accommodated therein, or the crushed stone element 4, the permeation pipe 5, or the crushed stone element 4, the permeation pipe 5, and the permeable sheet element 6 are illustrated. Wrapped in a net that does not
It can also be housed in the letter-shaped impermeable concrete plate 21 and integrated into a unit.

In the case of on-site construction, the ground 1 has a depth corresponding to the height of the U-shaped impermeable concrete plate 21.
After forming a groove 1b, a U-shaped impermeable concrete plate 21 is dropped into the groove 1b, and the lower end and the side end of the adjacent U-shaped impermeable concrete plate 21 are connected so as to substantially abut each other. After that, the crushed stone element 4, the permeation pipe 5, and the permeable sheet element 6 are sequentially placed and accommodated inside the U-shaped impermeable concrete plate 21, and the ends of the adjacent permeation pipes 5 are connected so as to substantially abut each other. You.

In the case of unitization, the ground 1 is dug to a depth corresponding to the height of the U-shaped impermeable concrete plate 21 to form a groove 1b. The U-shaped impermeable concrete plate 21 on which the pipe 5 and the water-permeable sheet element 6 are integrally laid is dropped, and the lower end and the side end of the adjacent U-shaped impermeable concrete plate 21 and the end of the adjacent infiltration pipe 5 are removed. They are connected so as to substantially contact each other.

In the water retaining structure C, both ends of the U-shaped impermeable concrete plate 21 in the longitudinal direction are connected to a sewerage facility (not shown) in the same manner as described above. Similarly to the side part shown in FIG. 5, it may be closed by a water-impervious concrete plate (not shown) as necessary, or may be left open. However, when it is opened, a water-permeable sheet element 6 (not shown) is laid at both ends. It is preferable to surround the side portion of the crushed stone element 4.

In the case of the relatively small water retention structure C, one or more box-shaped water-impregnated concrete tanks having an open upper portion may be provided. Other configurations are the same as those of the first embodiment, and similar effects can be obtained.

The ground 1 above the water retaining structure C has a groove 1b.
The ground 1 may be formed after the water retention structure C is installed by using the earth and sand generated when excavating the ground as backfill soil, and the planting 8 may be performed on the ground 1. When integrally forming the impermeable concrete plate 21, the crushed stone element 4, the infiltration pipe 5, and the permeable sheet element 6, the soil and sand containing seeds are further surrounded by a net or the like on the upper part of the permeable sheet element 6, and the permeable sheet element 6 is formed. And the ground 1 already planted 8 may be placed on the upper part of the water-permeable sheet element 6 to be integrally formed.

FIG. 5 also shows an example in which the infiltration tube 5 is accommodated inside the crushed stone element 4. A rectangular or other polygonal box (not shown) having a void may be accommodated in the crushed stone element 4, or a water retaining body having only the crushed stone element 4 without the infiltration tube 5 may have substantially the same configuration. Effect can be obtained.

Next, a configuration of a permeation facility having a water retention structure according to a sixth embodiment of the present invention will be described with reference to FIG. The same components as those in the first to fifth embodiments are denoted by the same reference numerals, and the description is omitted.

As shown in FIG. 6, in the water retention structure D of this embodiment, as in the third and fourth embodiments shown in FIG. 3 and FIG. In some cases, the U-shaped impermeable concrete plate 21 of the fifth embodiment shown in FIG. 5 has a plurality of through holes 21b1 and supports the lower part of the permeation control sheet element 11 surrounding the lower part of the crushed stone element 4. The top surface 21a of the road 2 surrounds the permeable bottom plate 21b and the side of the crushed stone element 4.
And an impermeable side plate 21c having a height flush with the ground surface 1a of the ground 1 above the water retaining structure D.

In the water retention structure D of this embodiment, similarly to the fifth embodiment, after the water permeability control sheet element 11 serving as a water permeability control film is laid inside the U-shaped water impervious concrete plate 21 above the water permeability bottom plate 21b. , The water permeability control sheet element 11
A crushed stone element 4 composed of a plurality of crushed stones serving as a water retaining body capable of penetrating and retaining rainwater is accommodated therein, and a permeation pipe 5 is accommodated inside the crushed stone element 4. Is laid.

Further, similarly to the fifth embodiment, the U
-Shaped impermeable concrete board 21, permeation control sheet element
11. Each member of the crushed stone element 4, the infiltration pipe 5, and the permeable sheet element 6 may be constructed on site, but the above members are integrally unitized in advance in a factory or the like, and the unit is transported to the site. Construction to improve the workability,
The construction period can be shortened.

In the case of on-site construction, the ground 1 has a depth corresponding to the height of the U-shaped impermeable concrete plate 21.
After forming a groove 1b, a U-shaped impermeable concrete plate 21 is dropped into the groove 1b, and the lower end and the side end of the adjacent U-shaped impermeable concrete plate 21 are connected so as to substantially abut each other. After that, a permeation control sheet element 11 is laid on the upper part of the permeation bottom plate 21b of the U-shaped impermeable concrete plate 21, and the crushed stone element 4, the permeation pipe 5, and the permeation sheet element 6 are sequentially arranged on the upper part of the permeation control sheet element 11. It is placed and accommodated, and the ends of the adjacent permeation tubes 5 are also connected so as to substantially abut each other.

In the case of unitization, the ground 1 is dug to the depth corresponding to the height of the U-shaped impermeable concrete plate 21 to form a groove 1b. The U-shaped impermeable concrete plate 21 on which the crushed stone element 4, the infiltration pipe 5, and the water-permeable sheet element 6 are integrally laid is dropped, and the lower end and the side end of the adjacent U-shaped impermeable concrete plate 21 and the adjacent infiltration The ends of the tubes 5 are connected so as to substantially abut each other.

FIG. 6 also shows an example in which the infiltration tube 5 is accommodated inside the crushed stone element 4. A rectangular or other polygonal box (not shown) having a void may be accommodated in the crushed stone element 4, or a water retaining body having only the crushed stone element 4 without the infiltration tube 5 may have substantially the same configuration. Effect can be obtained. Other configurations are the same as those of the first to fifth embodiments, and the same effects can be obtained.

Next, the configuration of a permeation facility having a water retention structure according to a seventh embodiment of the present invention will be described with reference to FIG. The same components as those in the fifth embodiment are denoted by the same reference numerals, and description thereof is omitted.

In this embodiment, the ground 1 above the water-permeable sheet element 6 of the water retention structure C of the fifth embodiment shown in FIG.
Optical fiber cable for communication etc. as shown in FIG.
41 was buried and laid. The outer periphery of the optical fiber cable 41 is protected by being waterproofed by a waterproof duct.

According to the above configuration, since the optical fiber cable 41 can be laid at a position near the ground surface 1a of the ground 1, maintenance such as extension and connection of the optical fiber cable 41 can be easily performed.

As another configuration, an optical fiber cable
41 may be accommodated and laid inside the crushed stone element 4 of the water retention structure C shown in FIG.
The water retention structures A to D of the respective embodiments shown in FIGS.
The optical fiber cable 41 may be laid at each predetermined position.

In addition to the optical fiber cable 41, if necessary, telephone lines such as water pipes, gas pipes, metal wires, etc.
It is also possible to house and lay communication cables such as cable television lines and data communication lines, and transmission lines such as transmission and distribution lines.

Next, the configuration of an infiltration facility having a water retention structure according to an eighth embodiment of the present invention will be described with reference to FIG. The same components as those in the first to sixth embodiments are denoted by the same reference numerals and description thereof is omitted.

As shown in FIG. 8, in the water retention structure E of this embodiment, the median strip and the shoulder of the road 2 are similar to the third, fourth, and sixth embodiments shown in FIGS. 3, 4, and 6. A planting porous concrete 31 is provided in place of the ground 1 in the case where there is room for land in the periphery and above the water-permeable sheet element 6 of the fifth embodiment shown in FIG.

The planted porous concrete 31 is one in which seeds are contained in pores of porous concrete.

The upper end 21a of the U-shaped impermeable concrete plate 21 is formed substantially flush with the upper surface 31a of the planted porous concrete 31 provided above the water retaining structure E and the ground surface 1a of the ground 1. The road surface 2a of the road 2 and the ground surface 1a of the ground 1 extending from the road surface 2a to the planted porous concrete 31 are formed so as to be inclined downward toward the planted porous concrete 31 on the upper part of the water retention structure A. The rainwater falling on the ground surface 1a of the ground 1 extending from the road surface 2a to the planted porous concrete 31 from the road surface 2a penetrates the planted porous concrete 31 and is guided to the water retention structure E.

Further, similarly to the fifth embodiment, the U
Each member of the V-shaped impermeable concrete plate 21, the crushed stone element 4, the infiltration pipe 5, the water-permeable sheet element 6, and the planted porous concrete 31 may be constructed on site, but the above-described members are integrally united in advance in a factory or the like. To improve the workability by transporting the unit to the site and constructing it.
The construction period can be shortened.

In the case of on-site construction, the ground 1 has a depth corresponding to the height of the U-shaped impermeable concrete plate 21.
After forming a groove 1b, a U-shaped impermeable concrete plate 21 is dropped into the groove 1b, and the lower end and the side end of the adjacent U-shaped impermeable concrete plate 21 are connected so as to substantially abut each other. After that, the crushed stone element 4, the infiltration pipe 5, the permeable sheet element 6, and the planting porous concrete 31 are sequentially placed and accommodated on the upper part of the U-shaped impermeable concrete board 21, and the ends of the adjacent infiltration pipes 5 are also substantially each. It is connected so as to abut.

In the case of unitization, the ground 1 is dug to the depth corresponding to the height of the U-shaped impermeable concrete plate 21 to form a groove 1b, and then the crushed stone element 4 The U-shaped impermeable concrete plate 21 on which the pipe 5, the permeable sheet element 6, and the planted porous concrete 31 are integrally laid is dropped, and the lower end portion and the side end portion of the adjacent U-shaped impermeable concrete plate 21 and the adjacent seepage are infiltrated. The ends of the tubes 5 are connected so as to substantially abut each other.

According to the above configuration, planting can be performed only by providing the planting porous concrete 31 containing seeds above the crushed stone element 4 serving as a water retaining body via the water-permeable sheet element 6, and the planting operation is omitted. Since it can be performed, the workability is improved and the construction period can be shortened.

When the planted porous concrete 31 is clogged with earth and sand, the planted porous concrete 31 can be easily replaced, and the upper surface 31a of the planted porous concrete 31 must be periodically cleaned. Thus, clogging due to earth and sand can be easily prevented.

In this embodiment, the planted porous concrete 31 is mounted on the water-permeable sheet element 6. However, the water-permeable sheet element 6 provided between the crushed stone element 4 and the planted porous concrete 31 is used. Alternatively, the planted porous concrete 31 may be directly placed on the crushed stone element 4 to constitute the plant. Further, the planted porous concrete 31 can be similarly applied to the above-described embodiments.

FIG. 8 also shows an example in which the infiltration tube 5 is housed inside the crushed stone element 4. A rectangular or other polygonal box (not shown) having a void may be accommodated in the crushed stone element 4, or a water retaining body having only the crushed stone element 4 without the infiltration tube 5 may have substantially the same configuration. Effect can be obtained. Other configurations are the same as those of the first to sixth embodiments, and the same effects can be obtained.

Next, the configuration of a ninth embodiment of a permeation facility having a water retention structure according to the present invention will be described with reference to FIG. The same components as those in the eighth embodiment are denoted by the same reference numerals, and the description is omitted.

In this embodiment, the planted porous concrete 31 of the eighth embodiment shown in FIG. 8 is provided with a large number of through holes 31b as shown in FIG. This through-hole 31b is formed by penetrating a hole of an appropriate size and shape so as to secure the rigidity of the planted porous concrete 31 and to prevent a vehicle or the like from passing over the planted porous concrete 31. The size and shape are not particularly limited, and various types can be applied.For example, the shape may be a circular through hole 31b, or may be a direction perpendicular to the longitudinal direction of the U-shaped impermeable concrete plate 21. It may be a long hole having a plurality of holes formed at a predetermined pitch.

According to the above configuration, the rainwater collected on the upper surface 31a of the planted porous concrete 31 can easily penetrate into the crushed stone element 4 and the seepage pipe 5 through the through hole 31b, and the planted porous concrete 31 There is no problem even if 31 is slightly clogged.

Next, the configuration of a permeation facility having a water retention structure according to a tenth embodiment of the present invention will be described with reference to FIG. The same components as those in the eighth embodiment are denoted by the same reference numerals, and the description is omitted.

In this embodiment, a through hole 51b is used instead of the planted porous concrete 31 of the eighth embodiment shown in FIG.
The concrete plate 51 having the above structure is placed on the upper part of the water-permeable sheet element 6, and the through hole 51b is filled with earth and sand, crushed stone 52, etc., and planted.

The through-hole 51b is also provided with a hole of an appropriate size and shape so as to secure the rigidity of the concrete plate 51 as described above and to prevent a vehicle or the like from passing over the concrete plate 51. What is necessary is just to form, the size and shape are not particularly limited, and various things can be applied,
For example, a circular or square through hole 51b may be used.
It may be an elongated hole formed with a plurality of holes at a predetermined pitch in a direction perpendicular to the longitudinal direction of the letter-shaped impermeable concrete plate 21.

According to the above configuration, the rainwater collected on the upper surface 51a of the concrete plate 51 penetrates the earth and sand, the crushed stone 52 and the like accommodated in the through hole 51b and easily penetrates into the crushed stone element 4 and the seepage pipe 5. I can do it.

When the earth and sand, crushed stones 52 and the like accommodated in the through holes 51b of the concrete plate 51 are clogged, the earth and sand and the crushed stones 52 and the like can be easily replaced integrally with the concrete plate 51. By periodically cleaning the upper surface 51a of the concrete plate 51, clogging of earth and sand, crushed stones 52 and the like can be easily prevented.

In the above embodiments, the case where the permeation tube 5 is constituted by a cylindrical tube has been described, but a square tube may be used.

Further, in each of the above embodiments, the case where the U-shaped impermeable concrete plate 21 is applied as the impermeable tank has been described. However, other impermeable tanks may be made of plastic or wood.

[0099]

Since the present invention has the above-described structure and operation, it can be planted on a central divider or a side gutter of an expressway or a general road, and can retain water contributing to the growth of the plant. It is possible to provide a permeation facility having a water retention structure having both a water retention function and a permeation function of permeating rainwater and the like into the ground.

When the water retaining body, the water-impermeable tank, and the water-permeable membrane, or the water retaining body, the water-permeable control membrane, the tank, and the water-permeable membrane are integrally formed as a unit, they are previously integrated in a factory or the like. Since the unit can be transported to the site for construction, the workability is improved, and the construction period can be shortened. Further, when the water permeability of the water retaining body, the water permeable membrane, and the like is deteriorated, the entire unit can be replaced, so that the maintenance property is good.

In the case where the planting porous concrete containing seeds is provided above the water retaining body, planting becomes possible only by providing the planting porous concrete containing seeds above the water retaining body. Since the planting work can be omitted, the workability is improved and the construction period can be shortened.

[Brief description of the drawings]

FIG. 1 is a first view of an infiltration facility having a water retention structure according to the present invention.
FIG. 2 is an explanatory cross-sectional view illustrating a configuration of the embodiment.

FIG. 2 is a second view of a permeation facility having a water retention structure according to the present invention.
FIG. 2 is an explanatory cross-sectional view illustrating a configuration of the embodiment.

FIG. 3 is a third view of a permeation facility having a water retention structure according to the present invention.
FIG. 2 is an explanatory cross-sectional view illustrating a configuration of the embodiment.

FIG. 4 is a fourth view of a permeation facility having a water retention structure according to the present invention.
FIG. 2 is an explanatory cross-sectional view illustrating a configuration of the embodiment.

FIG. 5 is a fifth view of a permeation facility having a water retention structure according to the present invention.
FIG. 2 is an explanatory cross-sectional view illustrating a configuration of the embodiment.

FIG. 6 is a sixth view of the infiltration facility having the water retention structure according to the present invention.
FIG. 2 is an explanatory cross-sectional view illustrating a configuration of the embodiment.

FIG. 7 is a seventh view of the infiltration facility having the water retention structure according to the present invention;
FIG. 2 is an explanatory cross-sectional view illustrating a configuration of the embodiment.

FIG. 8 is a view showing the eighth permeation facility having a water retention structure according to the present invention;
FIG. 2 is an explanatory cross-sectional view illustrating a configuration of the embodiment.

FIG. 9 is a ninth osmosis facility having a water retention structure according to the present invention.
FIG. 2 is an explanatory cross-sectional view illustrating a configuration of the embodiment.

FIG. 10 shows the tenth infiltration facility having a water retention structure according to the present invention.
FIG. 2 is an explanatory cross-sectional view illustrating a configuration of the embodiment.

FIG. 11 is a diagram illustrating a conventional example.

[Explanation of symbols]

 A to E: water retention structure 1: ground 1a: ground surface 1b: groove 2: road 2a: road surface 2b: road bed 2c: dense asphalt 2d: coarse asphalt 2e: particle size adjustment crushed stone 2f: crusher orchid Element 4: Crushed stone element 5: Permeation pipe 5a: Through hole 6: Permeable sheet element 7: Permeable concrete plate 7a: Upper end 7b: Lower end 8: Planting 11: Permeable control sheet element 21: U-shaped perforated concrete plate 21a ... Upper end 21b ... Permeable bottom plate 21b1 ... Through hole 21c ... Impermeable side plate 31 ... Planting porous concrete 31a ... Top surface 31b ... Through hole 41 ... Optical fiber cable 42 ... Waterproof duct 51 ... Concrete plate 51a ... Top surface 51b ... Through hole 52 ... Crushed stone

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsuya Kisani, Inventor 1-22-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Haneda Hume Tube Co., Ltd. (72) Hiroki Yamashita 1-22-2, Nishi-Shinjuku, Shinjuku-ku, Tokyo No. Haneda Hume Tube Co., Ltd.

Claims (9)

[Claims] 1. A water retaining body capable of penetrating and retaining rainwater, an impermeable tank or a water impervious membrane surrounding a lower part and a side part of the water retaining body, and a water permeable membrane surrounding an upper part of the water retaining body. A permeation facility having a water retention structure, wherein the permeation facility is buried inside and planted on the ground above the water retention body. 2. A water retention body capable of penetrating and retaining rainwater, and a water permeability control membrane surrounding the water retention body, are buried in the ground, and planted on the ground above the water retention body. Infiltration facility with a water retention structure. 3. The lithotripter according to claim 1, wherein the water retaining body is constituted by a crushed stone element comprising a plurality of crushed stones, an infiltration tube accommodated in the crushed stone element, or a box housed in the crushed stone element. An infiltration facility having the water retention structure according to claim 2. 4. The seepage facility having the water retention structure is provided adjacent to a road, and a water impervious plate or a water impervious membrane that separates the roadbed of the road from the ground of the seepage facility having the water retention structure by separating the water. The infiltration facility having a water retention structure according to any one of claims 1 to 3, characterized by having: 5. A water retaining body capable of penetrating and retaining rainwater, an impermeable tank that supports the water retaining body and surrounds a lower part and a side part of the water retaining body, and a water permeable membrane that surrounds an upper part of the water retaining body. A permeation facility having a water retention structure, characterized by burying a unit integrally configured in advance in the ground and planting the ground on the upper part of the water retention body. 6. A water retaining body capable of penetrating and retaining rainwater, a water permeable control membrane surrounding a lower part of the water retaining body, a water permeable bottom plate supporting a lower part of the water permeable control membrane and having a through hole, and the water retaining body. A tank composed of an impermeable side plate surrounding the side of the water retaining membrane, and a water permeable membrane surrounding the upper part of the water retaining body, embedded in the ground in advance, in the ground above the water retaining body An infiltration facility with a water retention structure characterized by planting. 7. The infiltration facility having a water retention structure according to claim 1, wherein a planting porous concrete containing seeds is provided above the water retention body. 8. The water retaining body according to claim 1, wherein a concrete plate having a through hole is placed on top of the water retaining body, and soil or crushed stone stored in the through hole is planted. An infiltration facility having the water retention structure according to claim 1. 9. An optical fiber cable is laid in the infiltration facility having the water retention structure.
An infiltration facility having the water retention structure according to any one of items 8 to 10.