JP2864080B2 - Rainwater penetration structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for infiltrating rainwater into the ground from a water channel such as a gutter or a water storage portion (collectively referred to as a rainwater channel) such as a reservoir.

[0002]

2. Description of the Related Art Conventionally, various structures have been proposed as rainwater infiltration structures that allow rainwater to penetrate into the ground from a rainwater channel. In the prior art, a filter was provided at an appropriate place so that the underground infiltration part would not be clogged by fine particles of earth and sand contained in rainwater. Therefore, rainwater can be filtered through this filter to remove fine particles of earth and sand and then permeate into the ground. It should be noted that this filter gradually becomes clogged with the passage of time, and the permeation performance is reduced.

[0003]

However, in the conventional rainwater infiltration structure, a filtering function using a filter, that is, a means for attaching fine particles to the filter and removing the fine particles is used. Clogging always occurs due to fine particles, and its permeability gradually decreases,
It will need to be replaced in a short time.
In addition, when the filter is replaced, the filter cannot be easily attached or detached, so that the replacement of the filter requires a great deal of work, and there is a problem of poor practicality.

The present invention pays attention to the above-mentioned conventional problems, and makes it possible to sufficiently remove fine particles by sedimenting the fine particles without using a filter having a drawback that the fine particles are clogged. It is another object of the present invention to provide a rainwater infiltration structure that can collect sedimented fine particles, and can easily perform the work when installing or replacing the fine particle sedimentation means and removing mud. .

[0005]

According to a first aspect of the present invention, there is provided a rainwater infiltration structure, wherein an opening is formed in a side wall of a rainwater channel, and a base end is formed in the opening. In addition to the above, an outer frame member whose leading end portion reaches the underground penetrating portion is installed in the ground, and inside the outer frame member, a drawer member that is detachable from the rainwater channel through an opening is provided. Inside the drawer member, a plurality of water chambers are defined by partition walls, and a mud storage chamber is defined through a bottom plate having a mud drop hole at the bottom of the water chamber, and each of the partition walls has A throttle communication hole is formed, and the water communication chambers are communicated with each other by the throttle communication hole, thereby forming a water conveyance system path from the rainwater conveyance section to the underground permeation section.

In the rainwater infiltration structure according to a second aspect, in the rainwater infiltration structure according to the first aspect, each of the plurality of water passage chambers defined by the partition wall is filled with a multi-cavity member.

[0007]

In the rainwater infiltration structure according to the first aspect, the rainwater flowing in the water channel such as the gutter or the rainwater stored in the storage basin passes through the water channel formed inside the draw-out member. It reaches the middle penetration area and penetrates into the ground. The rainwater that penetrates into the ground removes fine soil particles while passing through the headrace channel.

That is, since a partition wall provided with a throttle communication hole is provided in the middle of the water channel, rainwater flowing into the water channel from the rainwater channel section is blocked by the throttle communication hole of the partition wall. Flow velocity decreases.

As described above, since the flow rate of rainwater passing through the water conveyance system path is reduced by the throttle communication hole, fine particles of the rainwater settle and are removed. Therefore, the underground infiltration portion is not clogged with the fine particles of the earth and sand, and the permeability of rainwater into the underground can be maintained for a long time.

[0010] Further, as described above, the fine particles settling due to the decrease in the flow velocity settle through the mud hole of the bottom plate into the mud chamber defined at the bottom of the water passage chamber. It accumulates on. In this case, since the upper surface of the mud chamber is covered by the bottom plate of the water passage chamber, and the mud chamber is isolated from the flow of the water conduit, the particles settled in the mud chamber flow through the water conduit. Therefore, the particles can be reliably stored in the mud storage chamber without being wound up.

Further, since the water conduit is formed in a draw-out member, when the water conduit is installed or replaced and mud accumulated in the mud storage chamber is removed, the draw-out member is moved from the inside of the storm water conduit for water supply. It is only necessary to attach / detach to / from the member, and the operation can be performed easily.

In the rainwater permeation structure according to the second aspect, the plurality of water passage chambers defined by the partition walls are filled with the multi-cavity members. Therefore, in addition to the decrease in the flow velocity due to the throttle communication hole, the flow velocity of the rainwater also decreases due to the multi-cavity member. Thereby, the sedimentation of the fine particles is further promoted, and the ability to remove the fine particles is improved.

Further, unlike the filter for adhering and removing the fine particles of rainwater, the multi-cavity member ensures the permeability of rainwater, so that the multi-cavity member is not clogged by the adhesion of the fine particles. . Therefore, the multi-cavity member can be used for a long time.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. First, the rainwater permeation structure of the first embodiment will be described with reference to FIGS.

In the drawing, reference numeral 10 denotes a gutter block, which is formed as a concrete block having an open bottom surface by connecting the upper ends of both left and right side walls 11, 11 by beams 12, 12. It is installed on the base concrete layer 14 formed on the foundation stone 13 and the bottom concrete layer 15 is formed on the base concrete layer 14, so that the inside is formed in the water channel 1 (rainwater channel). I have.

An opening 16 is formed in the side wall 11 of the side groove block 10, and a rectangular cylinder block 2 as an outer frame member connected to the opening 16 is installed in the ground. The rectangular tube block 2 is installed underground such that a base end is connected to a fitting portion formed in the opening 16 via a sealing material 21 and a front end thereof reaches the underground penetration portion 3. ing.

The underground infiltration section 3 is a layer in which crushed stone 30 or the like is filled in the ground in a layered manner. I will do it. In addition, the upper surface of the underground penetration part 3 is covered with the concrete layer 4, and this is caused by the collapse of the earth and sand from above.
This is to prevent the underground penetration part 3 from being clogged.

A draw-out member 5 is provided inside the rectangular cylinder block 2 so as to be detachable from the inside of the side groove block 10 through an opening 16. The draw-out member 5 is formed in a box having a size that can be slidably fitted in the rectangular tube block 2, and has partition walls 50, 51, 52, and 53 formed at two positions at both ends and an intermediate portion. This partition 5
0, 51, 52, and 53 allow the inside of the extraction member 5 from the upstream to the first water passage 5a, the second water passage 5b, and the third water passage 5
c. In the embodiment, the rectangular cylinder block 2
Is 60 cm, but can be appropriately determined according to the groove width of the side groove block 10.
cm is appropriate and if a longer length is needed,
What is necessary is just to add the square block 2 of a plurality of children.

Each of the partition walls 50, 51, 52, 53 has a communicating hole 50a, 51a, 52a,
53a are formed, and the throttle communication holes 50a, 51a, 5
The water passages 5a, 5b, and 5c communicate with each other by 2a and 53a, and a water passage 6 extending from the water passage 1 to the underground seepage portion 3 is formed. In this case, the throttle communication hole 50a formed in the upstream partition wall 50 is for taking in rainwater, and the throttle communication hole 53a formed in the downstream partition wall 53 is for discharging rainwater. Restriction communication hole 5 for taking in
0a to the throttle communication hole 53a for discharge,
Each of the aperture communication holes 50a, 51
a, 52a and 53a are open. The aperture communicating hole is not limited to a round hole, and may be formed in a slit shape.

Further, inside the drawer member 5, a water passage chamber 5 is provided.
Mud storage chambers 58 are defined at the bottoms of a, 5b and 5c via a bottom plate 57 having a mud hole 57a. The mud storage chamber 58 is formed in a single chamber with a size extending over the entire length of the drawer member 5, and the mud drop hole 58a is formed with a number of small holes. It is considered appropriate that the diameter of the mud drop hole 58a is about 3 to 5 mm, and it may be a round hole or a square hole.

Next, the operation of the embodiment will be described. In the rainwater infiltration structure of the present embodiment, the rainwater flowing in the water channel 1 reaches the underground infiltration portion 3 through the water guiding system channel 6 formed inside the extraction member 5 and permeates into the ground. The rainwater that penetrates into the ground removes fine particles of earth and sand while passing through the water conduit 6.

That is, in the middle of the water conduit 6, the communication holes 50a, 51 are restricted so that the water conduit 6 meanders up and down.
a, 52a, 53a formed partition walls 50, 51, 5
2 and 53 are provided, so that the waterway 1
The rain water flowing into the squeezing holes 50a, 51a, 5
2a and 53a reduce the flow velocity.

As described above, since the flow rate of rainwater passing through the water conduit 6 is reduced by the throttle communication holes 50a, 51a, 52a, 53a, fine particles of the rainwater settle and are removed. In particular, in the embodiment, since the water conveyance path 6 is meandering, the total length of the water conveyance path 6 can be increased, and the fine particles can be removed more efficiently. Therefore, the underground infiltration part 3 is not clogged with fine particles of earth and sand, and the permeability of rainwater into the underground can be maintained for a long time.

Further, as described above, the fine particles settling due to the decrease in the flow velocity are deposited in the mud reservoir chamber 58 defined at the bottom of the water passage chambers 5a, 5b, 5c in the mud hole 57a of the bottom plate 57.
And accumulates in the mud storage chamber 58. In this case, the mud storage chamber 58 has a bottom plate 5
7, the inside of the mud chamber 58 is isolated from the flow of the water conduit 6, so that the fine particles settled in the mud chamber 58 are not taken up by the flow of the water conduit 6, It can be reliably received in the mud storage chamber 6.

Further, since the water conduit 6 is formed in the draw-out member 5, when the water conduit 6 is installed or replaced, and when the mud accumulated in the mud storage chamber 58 is removed, the draw-out member 5 is connected to the water conduit. It only needs to be attached and detached from inside 1 to inside 2 of the rectangular tube block,
The work can be easily performed. In the embodiment, the draw-out member 5 is formed so as to be assembled and disassembled. This is to simplify the removal of the mud accumulated in the mud chamber 58 after the draw-out member 5 is taken out. After disassembling 5 and removing the mud and removing the mud, the drawer member 5 is reassembled and attached to the inside 2 of the rectangular tube block.

In the embodiment, since the headrace 6 is formed above the bottom of the waterway 1, when the amount of rainwater is small, there is no inflow of rainwater into the headrace 6, and When the amount of rainwater is large due to heavy rain, etc., since the rainwater penetrates into the ground through the water conveyance system 6, the outflow of rainwater flowing from the water channel 1 into the river can be suppressed by that much. It also helps to prevent river flooding due to the concentration of rainwater from the beginning.

FIG. 3 is a sectional view showing another example of the pull-out member 5. As shown in FIG. The drawer member 5 has a bottom plate 75 of the water passage chambers 5a, 5b, 5c formed in a corrugated shape, and a mud drop hole 57 at the bottom of the valley.
In this figure, a slit-shaped hole serving as a is formed. In this case, the fine particles falling from each of the water passage chambers 5a, 5b, 5c slide along the valley surface of the bottom plate.
7a easily falls into the mud storage chamber 58, but on the contrary, it is difficult to flow out of the mud storage chamber 58 to each of the water passage chambers 5a, 5b, 5c, and the effect of preventing the backflow of fine particles is high.

Next, a rainwater permeation structure according to a second embodiment will be described with reference to FIGS. In the second embodiment, each of the plurality of water passage chambers 5a, 5b, 5c is provided with a multi-gap member 7 respectively.
The difference from the first embodiment is that a, 7b and 7c are filled.

The multi-cavity members 7a, 7b, 7c are made of linear bodies made of synthetic resin or metal and gathered into a loofah fiber form with voids, so that the permeability of rainwater is ensured. As this multi-gap member, for example, a Teijin endren mat or the like can be used, or a rough net may be attached to the outer peripheral surface of the multi-gap member.

Accordingly, the multi-gap members 7a, 7b, 7c are filled in the plurality of water passage chambers 5a, 5b, 5c defined by the partition walls 50, 51, 52, 53. The flow rate of rainwater is reduced by 7a, 7b, and 7c. Thereby, the sedimentation of the fine particles is further promoted, and the ability to remove the fine particles is improved. Since other configurations and operations of the second embodiment are the same as those of the first embodiment,
The same reference numerals in the drawings denote the same parts, and a description thereof will be omitted.

The multi-cavity members 7a, 7b, 7c are
Unlike filters that attach and remove fine particles of rainwater,
Since the permeability of rainwater is ensured, this multi-porous member 7
a, 7b and 7c are not clogged by the adhesion of the fine particles. Therefore, the multi-cavity members 7a, 7
b, 7c can be used.

Next, a rainwater permeation structure according to a third embodiment will be described with reference to FIG. In the third embodiment, the drawing communication holes 50a, 50a,
Vertical partition wall 5 having 51a, 52a, 53a, 54a
0, 51, 52, 53, and 54 are formed, and the vertical partition walls 50, 51, 52, 53, and 54 allow the inside of the extraction member 5 to be located from the upstream side in the first water passage chamber 5a and the second water passage chamber 5b. , A third water passage 5c and a fourth water passage 5d. Then, in the water conveyance system path 6 meandering up and down, a horizontal partition wall having throttle communication holes 55a and 56a is provided in the second water passage chamber 5b and the fourth water passage chamber 5d where rainwater flows upward from below. The horizontal partition walls 55 and 56 define a second water chamber 5b and a fourth water chamber 5d as upper and lower two chambers, respectively.

The multi-gap members 7a, 7b, 7c, 7 filled in the water passage chambers 5a, 5b, 5c, 5d, respectively.
d is a filled state in which a plurality of sheets (three sheets in the embodiment) are stacked in each of the water passage chambers 5a, 5b, 5c, and 5d. In this case, as illustrated, the sheets may be stacked in the horizontal direction, You may overlap in the up-down direction.

As described above, in the third embodiment, the vertical partitions 50, 51, 52, 53, 54 and the horizontal partitions 55, 56 are provided.
The number of communication holes and the number of water passage chambers can be increased by combining the above, and the removal of fine particles due to a decrease in the flow rate of rainwater can be effectively performed. Since other configurations and operations of the third embodiment are the same as those of the second embodiment, the same reference numerals are used in the drawings, and description thereof will be omitted.

Next, a rainwater permeation structure according to a fourth embodiment will be described with reference to FIG. In the fourth embodiment, the inside of the extraction member 5 is defined from the upstream side into a first water passage 5a, a second water passage 5b, a third water passage 5c, and a fourth water passage 5d. The first water passage 5a is empty, and the second water passage 5b and the third water passage 5
c is filled with the multi-cavity members 7b and 7c, and
A filter F for attaching and removing fine particles is provided in the fourth water passage chamber 5d.

This is to remove smaller particles from the upstream to the downstream. In particular, it is difficult to remove ultrafine particles dissolved in rainwater by sedimentation. Was removed by the filter F. Since other configurations and operations of the fourth embodiment are the same as those of the second embodiment, the same reference numerals are used in the drawings, and description thereof will be omitted.

Next, a rainwater permeation structure according to a fifth embodiment will be described with reference to FIG. This fifth embodiment shows an example of a rainwater infiltration structure applied to a large reservoir basin in which a water reservoir 8 (rainwater channel) is formed.

In the drawing, reference numeral 80 denotes a reservoir block which is surrounded on all sides by a side wall 81, and rainwater flows into a water storage section 8 therein through a rainwater inlet 82 formed on the side wall 81 and is stored therein.

On the side wall 81 of the reservoir block 80,
As described in the rainwater infiltration structure of the first embodiment, the rectangular cylinder block 2 as the outer frame member is connected to the opening 16 and installed underground, and inside the rectangular cylinder block 2, A drawer member 5 having a water guide path 6 is provided.
The rainwater permeation structure in this case is two of the four side walls 81.
Although formed on one side wall, the rainwater infiltration structure can be formed on one side wall or on all side walls.

In the fifth embodiment, the structure and operation are the same as those of the first embodiment except that the present invention is applied to a reservoir. Further, it is of course possible to similarly apply the structures of the second, third, and fourth embodiments using the multi-cavity member to the reservoir.

Next, a rainwater permeation structure according to a sixth embodiment will be described with reference to FIGS. The sixth embodiment shows an example of a rainwater infiltration structure in which a gutter is formed in a gutter formed in a water channel 9 (rainwater channel).

In the figure, 90 is a U-shaped groove block,
It is installed on the reservoir block 91 and communicates with the interior of the reservoir block 91 through a communication hole 92 formed in the bottom surface thereof. Also, a rainwater inflow block 93 is formed at the upper surface of the reservoir block 91 and a corner at the bottom of the outer surface of the side wall of the U-shaped groove block 90, and the inside of the rainwater inflow block 93 is formed by the U-shaped groove block 90 and the reservoir block 91. It is communicated inside.

Side walls 9 before and after the rainwater inflow block 93
4, 94, the rectangular cylinder block 2 as an outer frame member is connected to the opening 16 and installed in the ground in the same direction as the extending direction of the U-shaped groove block 90, and is installed underground. Is provided with a drawer member 5 having a water guide path 6.

The other constructions and operations of the sixth embodiment are the same as those of the first embodiment. Further, it is of course possible to apply the structures of the second, third and fourth embodiments using the multi-cavity member to the present embodiment.

Although the embodiment of the present invention has been described with reference to the drawings, the specific structure of the present invention is not limited to the above-described embodiment. In addition to the gutter block shown in, a gutter by a U-shaped block, a three-side gutter, a culvert by a box culvert or a fume pipe, or a reservoir for the purpose of infiltrating rainwater, a reservoir disposed in the middle of the gutter. Rainwater may be conducted from a basin, a well, or the like.

Also, the number of partition walls and the number of water passage chambers can be appropriately set, and the water conveyance system need not necessarily meander.
The meandering direction may meander up and down, left and right, or a combination of up and down and left and right.

[0046]

As described above, in the rainwater infiltration structure according to the first aspect, since the flow velocity of the rainwater passing through the water conduit is reduced by the communication hole, the fine particles of the rainwater are settled and removed. can do. Therefore, the underground infiltration portion is not clogged with the fine particles of the earth and sand, and the permeability of rainwater into the underground can be maintained for a long time.

Further, since the mud chamber is provided, the fine particles settled in the mud chamber are not taken up by the flow of the water-conducting passage, and the fine particles can be reliably received in the mud chamber.

Further, unlike the related art, a filter for adhering and removing fine particles of rainwater is not used, so that frequent replacement in the case of using a filter is eliminated, and the water guide passage is formed in a drawing member. Therefore, when installing or replacing the water conveyance system and removing mud accumulated in the mud chamber, it is only necessary to attach and detach the drawer member from the water channel to the water conveyance member,
The work can be easily performed. Therefore, an effect that maintenance and management of the rainwater infiltration structure becomes easy can be obtained.

In the rainwater permeation structure according to the second aspect, since the flow velocity is reduced by the multi-porous member in addition to the flow velocity reduced by the throttle communication hole, the sedimentation of the fine particles is further promoted, This has the effect of improving the ability to remove.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a rainwater permeation structure according to a first embodiment.

FIG. 2 is an exploded perspective view showing a drawer member provided in the rainwater permeation structure of the first embodiment.

FIG. 3 is a cross-sectional view showing another example of the extraction member provided in the rainwater permeation structure.

FIG. 4 is a sectional view showing a rainwater permeation structure according to a second embodiment.

FIG. 5 is an exploded perspective view showing a drawer member provided in the rainwater permeation structure of the second embodiment.

FIG. 6 is a sectional view of a main part showing a rainwater permeation structure according to a third embodiment.

FIG. 7 is a sectional view of a main part showing a rainwater permeation structure of a fourth embodiment.

FIG. 8 is a sectional view showing a rainwater permeation structure according to a fifth embodiment.

FIG. 9 is a plan sectional view showing a rainwater permeation structure of a sixth embodiment.

FIG. 10 is a perspective view showing a rainwater penetration structure according to a sixth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waterway (rainwater conveyance part) 11 Side wall 16 Opening 2 Square cylinder block (outer frame member) 3 Underground penetration part 5 Extraction member 5a First water passage 5b Second water passage 5c Third water passage 50 Partition wall 50a throttle communication hole 51 partition wall 51a throttle communication hole 52 partition wall 52a throttle communication hole 53 partition wall 53a throttle communication hole 57 bottom plate 57a mud drop hole 58 mud storage chamber 6 water guide path 7a multi-gap member 7b multi-gap member 7c multi-gap Member 8 Water storage unit (rainwater conveyance unit)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E03F 1/00 E03F 5/04 E03F 5/10

Claims (2)

(57) [Claims] 1. An opening is formed in a side wall of a rainwater channel, a base end is connected to the opening, and an outer frame member having a distal end reaching an underground penetrating part is installed in the ground. A drawer member is provided inside the frame member so as to be detachable from the rainwater conduit through an opening. A plurality of water passage chambers are defined inside the drawer member by partition walls. A mud reservoir is defined through a bottom plate having a mud drop hole at the bottom, and a throttle communication hole is formed in each of the partition walls. Rainwater infiltration structure characterized by the formation of a headrace channel from the ground to the underground seepage section. 2. The rainwater infiltration structure according to claim 1,
A rainwater infiltration structure wherein a plurality of water passage chambers defined by partition walls are filled with a multi-cavity member.