JP2784898B2 - Gutter structure for penetration of rainwater etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gutter structure for infiltrating rainwater or the like for infiltrating rainwater or the like collected in a gutter into the ground to increase the amount of groundwater retained.

[0002]

2. Description of the Related Art As urbanization of a basin progresses, the surface runoff of rainwater increases and groundwater decreases. This is considered to be mainly due to the decrease in the amount of rainfall that penetrates into the ground due to the development of the ground surface covered with asphalt, the deterioration of the underground water retention function, and the reduction of the flow time. .

As a solution to such a problem, not only is the precipitation flowing into the gutter carried into the river, but also a hole is made in the bottom of the gutter or the bottom is made porous to collect water in the ground near the gutter. Products that can penetrate are also being developed.

[0004]

However, in the case of the above-described conventional gutter, water flowing in the gutter flows down without stagnating. Therefore, there is a problem that the flow time of the water flowing in the gutter is short and the amount of water permeated into the ground is reduced.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and a water channel is provided between a drainage gutter block and a drainage gutter block. By constructing with a permeate gutter block where water installed at intervals stays, the purpose is to provide a large amount of water permeating into the ground,
A water diffusion hole is formed in the bottom wall of the gutter composed of both side walls and a bottom wall, and a water collection / drainage gutter block in which a porous concrete permeable block is detachably attached to the water expansion hole is provided. A plurality of crushed stone layers laid on a layer of sand cover the both side walls and the bottom wall, and a plurality of the crushed stone layers are continuously installed in a state of being covered. When the inside height of the groove is deep and a water-spreading hole is formed in the bottom wall of the side groove composed of both side walls and the bottom wall, a water-permeable block made of porous concrete is detachably attached to the water-spreading hole. The infiltration gutter block is installed with both sides and the bottom wall covered with a layer of crushed stone. At the same time, in the layer of crushed stone, many drain holes are formed in the peripheral wall and A water infiltration tube filled with gravel, etc. The lower surface of the water-permeable block and the lower end opening of the gutter block are installed continuously with the sand layer or the first gravel layer formed at the bottom of the crushed stone layer, respectively. There is a gutter structure for permeation of rainwater or the like, characterized in that a water permeable sheet is provided therebetween.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. In FIGS. 1 to 3, reference numeral 1 denotes a drainage gutter block, as shown in FIG.
Where there is, the water F 'is collected in the gutter 1A, and where there is no groundwater F, as shown in FIG.
The water F 'flowing inside is infiltrated into the underground. That is, the drainage side groove block 1 is composed of a pair of left and right side walls 2, 2 and a bottom wall 3 connecting the lower ends of the side walls 2, 2. A plurality of collecting and draining holes 4 and 4 are formed at regular intervals along the longitudinal direction of the collecting and draining side groove block 1 in a lower portion of the side walls 2.

The drainage hole 4 is formed on the inner surface 2 of the side wall 2.
It has a funnel-like hole shape whose diameter gradually increases from the A side to the outer surface 2B side, and a large-diameter opening 4A is formed in the opening of the drainage hole 4 on the outer surface 2B side, The collection and drainage hole 4 can be closed by fitting a plug (not shown) into the large-diameter portion 4A. In the figure, reference numeral 5 denotes a concave guide groove for collecting water formed on the outer side surface 2B of the side wall 2, which is configured to incline to the left and right around the large diameter portion 4A.

Reference numeral 6 denotes the bottom wall 3 of the collecting / draining side gutter block 1.
The two water-spreading holes 6 are closed by a removable porous concrete water-permeable block 7 which is formed at regular intervals. In the figure, 6A is a step formed on the inner peripheral surface of the water spreading hole 6, and the water permeable block 7 fitted in the water spreading hole 6 is supported by the step 6A.

Reference numeral 8 denotes a sand layer, on which a crushed stone layer 9 made of crushed stone having a single grain size of about 4 is formed. 2 and the lower surface 3A of the bottom wall 3 are laid in a state of being completely covered with the crushed stone layer 9. In the figure, reference numeral 10 denotes a water-permeable sheet for preventing clogging.
It is installed between.

Reference numeral 11 denotes a side groove block for permeation. The side groove block for permeation 11 is for expanding water F 'flowing down in the groove 11A underground, and its structure is shown in FIGS. As shown, both side walls 12,12,
A bottom wall 13 connecting the lower ends of the two 2 and 12;
, A drainage guide hole 14A formed in the outer surface 12B of the side wall 12, a water collecting drainage hole 14 formed in a lower part of the bottom wall, two water spreading holes 16 formed in the bottom wall 13, and the water spreading hole 16. And a water-permeable block 17 made of detachable porous concrete closing the water-supply hole 16 and the like, all of which have the same configuration as the drainage-side gutter block 1. However, they differ from each other in the size of the inner height of the side groove (depth of the side groove).

That is, the inner width W of the side groove block 11 for penetration and the inner width w of the side groove block 1 for collecting and draining are the same (W = w), but the inner width W of the side groove block 11A of the side groove block 11 for penetration is different. The height H is greater than the inner height h of the side groove 1A of the drainage side groove block 1 (H> h). Therefore, as shown in FIG. 7, when the both-side groove blocks 11, 1 are continuously installed in accordance with the gradient of the ground G, the upper surface 13B of the bottom wall 13 of the infiltration side groove block 11 is formed.
Will be installed at a position one step lower (the difference between H and h) than the upper surface 3B of the bottom wall 3 of the drain / collecting drain groove block 1.

18A is a layer of sand, 18B is a first gravel layer,
On this sand layer 18A or the first gravel layer 18B, FIG.
2 and a crushed stone layer 19 made of crushed stone having a single grain size of about 4 in the same manner as the laid state of the drainage gutter block 1 shown in FIG.
Are formed, and the outer side surfaces 12B of the both side walls 12, 12 of the permeation side groove block 11 and the lower surface 13A of the bottom wall 13 are formed.
Are completely covered with the crushed stone layers 19, respectively. 20
Is a permeable sheet for preventing clogging, and is provided between the crushed stone layer 19 and the ground G.

Reference numeral 21 denotes a water infiltration pipe formed of concrete or synthetic resin, etc., and a large number of drain holes 22 are formed in the peripheral wall thereof. The lower surface of the water-permeable block 17 installed on the bottom wall 13 of the
1B is a layer 18A of sand formed on the bottom of the layer 19 of crushed stone.
Alternatively, they are installed vertically in contact with the first gravel layer 18B, respectively, and the water infiltration pipe 21 is filled with gravel 23 or the like.

Next, the operation will be described. First, in the case of the drainage gutter block 1, where the groundwater F is in the ground G, as shown in FIG. It permeates through the water-permeable sheet 10 and into the crushed stone layer 9. The groundwater F permeated into the crushed stone layer 9 passes through the drainage hole 4 formed in the side wall 2 of the drainage gutter block 1 and fits into the water-spreading hole 6 in the bottom wall 3. The water F ′ that has passed through the water-permeable blocks 7 and flowed into the respective side grooves 1A, and collected in the side grooves 1A, flows down along the drainage gradient of the collecting and draining side groove blocks 1.

Further, where there is no groundwater F, as shown in FIG. 2, the water F 'in the side groove 1A has passed through the drainage hole 4 and fitted into the water spreading hole 6 in the bottom wall 3. Permeate through the permeable block 7 and penetrate into the crushed stone layer 9 respectively, penetrate the permeable stone sheet 10 from the crushed stone layer 9, or penetrate into the sand layer 8 from the crushed stone layer 9 to the ground G Penetrated.

In this case, by passing through the water-permeable sheet 10 and through the water-permeable block 7, mud, dust, and the like contained in the water F ′ in the side groove 1 A are removed by the water-permeable sheet 10 and the water-permeable block 7. Filtered and only filtered water seeps underground. At this time, below the crushed stone layer 9, the sand layer 8 provided at the bottom of the crushed stone layer 9 functions to filter mud, dust, and the like.

If the water permeable block 7 is clogged with mud or dust contained in the water F 'in the side groove 1A, the clogging can be eliminated by replacing it. Instead of this water-permeable block 7,
The water hole 6 is closed with an ordinary concrete block,
Alternatively, at the same time, the drainage hole 4 is closed with a plug (not shown), thereby suppressing underground water spreading.

Next, the operation of the infiltration gutter block 11 will be described. As shown in FIG. 4 and FIG. Although it is almost the same as the case shown in FIG. 2 of the drain gutter block 1,
The difference is only in the path through which the water that has passed through the water-permeable block 17 penetrates the ground G.

That is, the water that has passed through the water-permeable block 17 enters the interior through the upper end opening 21A of the water infiltration pipe 21,
The water flows down the inside of the water infiltration tube 21 through the gap of the gravel 23, and from the lower end opening 21B to the sand layer 18A in FIG. 4 and to the first gravel by using the long water infiltration tube 21 in FIG. Each penetrates the layer 18B.

At the same time, while flowing down the water permeation pipe 21, water penetrates into the crushed stone layer 19 through a number of drain holes 22 formed in the peripheral wall, and the water permeable sheet 20 is removed from the crushed stone layer 19. Permeate or sand layer 18A, first gravel layer 1
8B penetrates and spreads to ground G. The length of the water infiltration tube 21 is changed according to the condition of the soil to be installed.

Thus, in the present invention, the collecting / draining side groove block 1 and the permeating side groove block 11 having the above-described configuration are installed in combination. That is, as shown in FIG. 7, 20 to 30 drainage gutter blocks 1 are continuously installed,
Next, one permeation side groove block 11 is installed, and 20 to 30 collection / drainage side groove blocks 1 are successively installed.

Therefore, as shown in FIG. 7, in the drainage gutter block 1, the water F ′ in the gutter 1 A, which could not be spread underground, is filled with the upper surface 3 of the bottom wall 3 of the drainage gutter block 1.
B is stored in the upper surface 13B of the bottom wall 13 of the infiltration side groove block 11, which is one step deeper than B, and the stored water permeates underground through the permeation block 17 and the water permeation pipe 21. As a result, the amount of water that can be spread underground increases, and the amount of water that flows down the drainage gutter block 1 and drains into rivers and the like can be reduced as much as possible.

[0023]

According to the gutter structure for infiltrating rainwater or the like according to the present invention, as described above, a water-spreading hole is formed in the bottom wall of the gutter composed of both side walls and a bottom wall. A plurality of continuous drainage gutter blocks, each of which is provided with a porous concrete water-permeable block so as to be detachable, are continuously covered with a layer of crushed stone laid on a layer of sand to cover the outer sides of the side walls and the bottom wall. And installed, between the drainage gutter block,
When the inside height of the groove is deeper than the drainage side drain block and the bottom wall of the side groove composed of both side walls and the bottom wall is formed with a water spreading hole, a porous concrete permeable block is formed in the water spreading hole. When the infiltration gutter block attached so as to be detachable is installed in a state where the both side walls and the outside of the bottom wall are covered with a layer of crushed stone, a large number of drain holes are formed in the peripheral wall in the layer of crushed stone. A water penetration tube filled with gravel and the like is drilled inside, the upper end opening of the bottom surface of the water permeable block of the penetration groove block and the lower end opening of the sand formed at the bottom of the crushed stone layer Layer or the first gravel layer, respectively, and a permeable sheet is installed between the crushed stone layer and the ground. Therefore, water is collected in places with groundwater, and in places without groundwater. Can penetrate underground extensively Kill the ゝ monitor, it is possible to prevent contamination of the soil by water spreading, and it is possible to prevent the occurrence of clogging by replacing the permeability block.
In addition, water can penetrate directly into deep parts of the ground,
While it is possible to increase the water holding capacity in the deep underground, the amount of water that can be spread underground in the infiltration gutter block increases, and the amount of water flowing down the gutter and draining to rivers, etc., should be minimized. There are various effects such as being able to do.

[Brief description of the drawings]

FIG. 1 is an operation explanatory cross-sectional view showing a state of collecting groundwater of a seepage gutter structure by a drainage gutter block.

FIG. 2 is an operation explanatory cross-sectional view showing a state in which water in a gutter of a seepage gutter structure by a drainage gutter block permeates underground.

FIG. 3 is a partially cutaway side view of a drainage gutter block.

FIG. 4 is an operation explanatory cross-sectional view showing a state in which water in a side groove of the seepage gutter structure by the seepage gutter block penetrates underground.

FIG. 5 is an operation explanatory cross-sectional view of another embodiment showing a state in which water in a side gutter of the permeation gutter structure is penetrated into the underground by the permeation gutter block.

FIG. 6 is a partially cutaway side view of a penetration side groove block.

FIG. 7 is an operation explanatory cross-sectional view showing a state in which water in a gutter of the seepage gutter structure for rainwater or the like permeates underground according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gutter block for drainage 1A Gutter 2 (12) Side wall 3 (13) Bottom wall 3A (13A) Lower surface 3B (13B) Upper surface 4 (14) Drainage hole 6 (16) Spread hole 6A (16A) Step 7 (17) Permeable block 8 Sand layer 9 (19) Crushed stone layer 10 Permeable sheet 11 Penetrating gutter block 18A Sand layer 18B First gravel layer 21 Water infiltration pipe 21A Upper opening 21B Lower opening 22 Drainage hole 23 Gravel

──────────────────────────────────────────────────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 (1)

(57) [Claims] 1. A drainage hole in which a water-spreading hole is formed in the bottom wall of a side groove composed of both side walls and a bottom wall, and a water-permeable block made of porous concrete is detachably mounted in the water-spreading hole. A plurality of drain gutter blocks are continuously installed in such a manner that the outer sides of the side walls and the bottom wall are covered with a layer of crushed stone laid on a layer of sand. When the inside height of the groove is deeper than the drain side gutter block and a water spreading hole is formed in the bottom wall of the side gutter including the both side walls and the bottom wall, a porous concrete permeable block can be attached to and removed from the water spreading hole. When the perforated gutter block is installed so that both sides and the bottom wall are covered with a layer of crushed stone, a number of drain holes are formed in the peripheral wall in the layer of crushed stone. A water infiltration pipe with a gravel etc. An end opening is installed continuously with a lower surface of the water permeable block of the infiltration gutter block and a lower end opening is respectively connected to a sand layer or a first gravel layer formed at the bottom of the crushed stone layer. A gutter structure for penetration of rainwater or the like, characterized in that a permeable sheet is installed between the ground and the ground.