JPH10168983A - Rain-water infiltration inlet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To acquire a rain-water infiltration inlet, in which the infiltration effect of storm water is not reduced, by forming a through-hole inclined from an upper section to a lower section towards the outside from the inside to a side wall. SOLUTION: A hole is dug, the rain-water infiltration inlet 1 is installed, and a connecting pipe is mounted on a socket 11. The side ditch of a road is connected to the connecting pipe, and a periphery is back-filled with broken stones and gravel. Since a through-hole 3 is inclined from an upper section to a lower section towards the outside from the inside at that time, the area of the outlet of the through-hole 3 exposed onto an outer circumferential surface is made larger than that of an outlet exposed onto the outer circumferential surface of a conventional approximately horizontal through-hole. Consequently, the whole is difficult to be closed with one broken stone. Even when gravel collapses and enters the through-hole 3, gravel is not passed through the through- hole 3 and does not enter the inside when the inside is heightened and the outside is lowered in the through-hole 3. As a result, the rain-water infiltration inlet 1 is not shallowed. Accordingly, the infiltration effect of the rain-water infiltration inlet is not reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rainwater infiltration basin.

[0002]

2. Description of the Related Art A conventional rainwater infiltration basin is disclosed in U.S. Pat.
As described in Japanese Patent Application Publication No. 183 and Japanese Utility Model Application Laid-Open No. 4-134590, a substantially horizontal through hole is provided in a side wall. The rainwater infiltration basin includes a drainage basin having a bottom plate as described in Japanese Utility Model Laid-Open No. 4-105183,
There is a drainage basin without a bottom plate as described in JP-A-34590. This rainwater infiltration basin is dug, installed in this hole, connected to a drainage ditch such as a gutter, and the surrounding area is split back and filled with rubble stone or gravel for use. Then, the rainwater flowing from the drainage ditch is collected in the rainwater infiltration basin, and this rainwater is
After passing through this through hole, it penetrates into the ground through cracked stone and gravel.

[0003]

However, when this rainwater infiltration basin is used, the through-hole is clogged with rubble stone,
There is a problem that the gravel enters the rainwater infiltration basin through the through-hole and the rainwater infiltration effect is reduced.

[0004] More specifically, this will be described with reference to FIG. 11. As shown in FIG.
The entrance of the through-hole 102 provided in the side wall 101 of the slab 0 is divided from the outside with the rubble stones 200, so that the rainwater cannot pass through the rainwater infiltration basin 100, or as shown in FIG. Gravel 300 passes through and rainwater infiltration measure 1
00, the rainwater infiltration basin 100 becomes shallow and the rainwater infiltration effect decreases. Therefore, an object of the present invention is to provide a rainwater infiltration basin in which the effect of infiltrating rainwater does not decrease.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and the invention according to claim 1 is characterized in that the side wall has a through hole inclined from upper to lower as going from inside to outside. A hole is provided.

According to a second aspect of the present invention, the upper edge outside the through hole in the first aspect of the invention is inclined at an angle lower than the lower edge inside the through hole.

[0007] The invention described in claim 3 is claim 1 or 2.
A groove passing through the through hole is provided on the outer peripheral surface of the side wall in the invention described. The through-hole in the present invention may have any shape. For example, the cross section may be circular, a vertically long rectangle, or a horizontally long rectangle.

According to the first aspect of the present invention, the through hole is provided in the side wall and is inclined downward from the top to the bottom as going from the inside to the outside. Is larger than the area of the exit that appears on the outer peripheral surface of the substantially horizontal through-hole, and it is difficult for the exit of the through-hole to be blocked by one split stone, etc. Since it enters a collapsed state, it is difficult for the inside of this through-hole to swell upward from the bottom, so that gravel passes through the through-hole inclined downward from the top as it goes from inside to outside, and enters the rainwater infiltration basin. Difficult, rainwater infiltration basin does not become shallow.

According to the second aspect of the present invention, the through hole in the first aspect of the present invention is inclined at an angle such that the outer upper edge is lower than the inner lower edge of the through hole.
The effect of the described invention, that is, the effect that the surface of the through-hole is hardly blocked by the split rubble or the like, that the gravel or the like does not easily enter the rainwater infiltration basin, and that the rainwater infiltration basin does not become shallow is further increased.

According to the third aspect of the present invention, since a groove passing through the through hole is provided on the outer peripheral surface of the side wall, even if the split stone blocks the outer side of the through hole along the outer peripheral surface, the outer peripheral surface can penetrate the outer peripheral surface. Since there is a groove between the hole and the through hole, the rainwater that has passed through the hole penetrates into the cracked stone and gravel through the groove.

[0011]

Next, embodiments of the present invention will be described. (Embodiment 1) FIGS. 1 and 2 show one embodiment of the rainwater infiltration basin of the present invention. FIG. 1 is an explanatory view showing a vertical cross section of the rainwater infiltration basin, and FIG. (B) is an explanatory view showing a state in which gravel is in a through hole.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a rainwater infiltration basin. The rainwater infiltration basin 1 has no bottom plate on the lower side and a receiving port 11 on the upper side. Reference numeral 2 denotes a side wall of the rainwater infiltration basin 1, and the side wall 2 is provided with a through-hole 3 having a circular cross section that is inclined downward from above as going from inside to outside. The through hole 3 is inclined such that the outer upper edge 31 is lower than the lower edge 32 inside the through hole. 4 is split chestnut. 5 is gravel.

Next, the method of use and operation of the rainwater infiltration basin 1 will be described. Digging a hole, laying a split stone or gravel underneath, installing the rainwater infiltration basin 1 on this, attaching a connecting pipe to the receiving port 11 of this rainwater infiltrating basin 1, connecting the gutter of the road to this connecting pipe, And backfill with rubble stone 4 and gravel 5. When it rains, rainwater enters the rainwater infiltration basin 1 from the side gutter of the road. Then, the rainwater permeates the ground through the bottom of the rainwater infiltration basin 1 and the through-hole 3, through the split stone 4 and the gravel 5. At the time of backfilling or during use, as shown in FIG. 2 (A), the outside of the through hole 3 of the rainwater infiltration basin 1 is broken by the rubble stone 4, or as shown in FIG. It often collapses and enters the through hole 3.

However, as shown in FIG. 2A, since the through hole 3 is inclined downward from the upper side as going from the inner side to the outer side, the area of the exit of the through hole 3 which appears on the outer peripheral surface is almost equal to that of the conventional one. It is larger than the area of the exit that appears on the outer peripheral surface of the horizontal through hole, and the whole is hard to be closed by one split stone 4. Therefore, the rainwater permeates into the ground from the gap 41 between the split stones. Further, as shown in FIG. 2 (b), even if the gravel 5 collapses and enters the through hole 3, the gravel or the like enters a state of collapse from the exit of the through hole. It is difficult for the gravel 5 to swell upward from above, and the crushed gravel 5 stops as a slope having a high outside and a low inside. Therefore, if the inside is high and the outside is low as in this through hole 3,
The gravel 5 does not enter through the through hole 3. As a result, the rainwater seepage measure 1 does not become shallow, and the seepage effect does not decrease.

(Embodiment 2) FIG. 3 shows another embodiment of the rainwater infiltration basin of the present invention, (a) is a perspective view of the rainwater infiltration basin,
(B) is a sectional view taken along line AA of (A). FIG.
1 is different from Example 1 shown in FIGS. 1 and 2 in that the bottom plate 13a is provided in the rainwater infiltration basin 1a. The rainwater infiltration basin 1a is the same as the first embodiment shown in FIGS. 1 and 2 except that rainwater does not permeate from below, and has the same function, and therefore, the description is omitted.

(Embodiment 3) FIG. 4 is a perspective view of a rainwater infiltration basin according to another embodiment of the present invention. The third embodiment shown in FIG. 4 is different from the first embodiment shown in FIGS. 1 and 2 in the shape of the through-hole 3b provided in the side wall 2b of the rainwater infiltration basin 1b. That is, the through hole 3b has a rectangular shape that is long horizontally. The through holes 3b have the same function even if the shapes are different. The other parts are the same as those of the first embodiment shown in FIGS.

(Embodiment 4) FIG. 5 shows still another embodiment of the rainwater infiltration basin of the present invention, wherein (a) is a perspective view of the rainwater infiltration basin, and (b) is a BB line of (a). FIG.
The fourth embodiment shown in FIG. 5 is different from the second embodiment shown in FIG. 3 in the shape of the through hole 3c provided in the side wall 2c of the rainwater infiltration basin 1c. That is, the through hole 3c has a vertically long rectangular shape. The through holes 3c have the same function even if they have different shapes. The other parts are the same as those in the second embodiment shown in FIG.

(Embodiment 5) FIGS. 6 and 7 show still another embodiment of the rainwater infiltration basin of the present invention. FIG. 6 (A) is a perspective view of the rainwater infiltration basin, and (B) is (A). 7, (c) is a bottom view of (a), (d) is a cross-sectional view taken along line CC of (b), (e) is a cross-sectional view taken along line DD of (b), FIG.
FIG. 4 is an explanatory diagram showing a state in which the split stone blocks the through hole.

6 and 7, reference numeral 1d denotes a rainwater infiltration basin, which has no bottom plate on the lower side and a receiving port 11d on the upper side. 2d is a side wall of the rainwater infiltration basin 1d,
This side wall 2d is provided with a through-hole 3d having a circular cross section which is inclined downward from above as going from inside to outside. The through hole 3d differs from the first embodiment in that the outer upper edge 31d is higher than the lower edge 32d inside the through hole 3d. Further, a groove 7d is provided on the outer peripheral surface of the rainwater infiltration basin 1d to connect the adjacent through holes 3d in the vertical and horizontal oblique directions. 4d is split chestnut.

Next, the method of use and operation of the rainwater infiltration basin 1d will be described. Digging a hole, laying a split stone or gravel underneath, installing a rainwater infiltration basin 1d thereon, attaching a connection pipe to the receiving port 11d of the rainwater infiltration basin 1d, connecting a road gutter to this connection pipe, And backfill with rubble stone 4d or gravel. When it rains, rainwater enters the rainwater infiltration basin 1d from the gutter of the road. Then, the rainwater permeates the ground through the bottom of the rainwater infiltration basin 1d and the through hole 3d, through the cracked stone 4 and the gravel.

At the time of backfilling or during use, as shown in FIG. 7, the outside of the through-hole 3 of the rainwater infiltration basin 1 is broken by the rubble stone 4, or the gravel collapses and enters the through-hole 3d. However, as shown in FIG. 7, the through hole 3 is inclined downward from above as going from the inside to the outside, and since the groove 7d is provided on the outer peripheral surface, it is open to the outer surface. The area is wider than the cross section perpendicular to the axis of the through-hole 3d, and the whole is hard to be closed by one split stone 4d, and even if it is closed, a groove 7d is formed between the split stone 4d and the outer peripheral surface. As a result, rainwater permeates the ground from between the split stones and the gap 42d. Also, even if the gravel collapses and enters the through hole 3d, the collapsing gravel stops as a slope having a high outside and a low inside. Therefore, this through hole 3d
When the inside is high and the outside is low as in the above, the gravel does not enter the inside through the through hole 3d, so that the rainwater infiltration basin 1 does not become shallow and the infiltration effect does not decrease.

(Embodiment 6) FIG. 8 shows still another embodiment of the rainwater infiltration basin of the present invention, and is a perspective view of the rainwater infiltration basin. When the sixth embodiment shown in FIG. 8 is compared with the fifth embodiment shown in FIGS. 6 and 7, the shape of the groove 7e provided in the side wall 2e of the rainwater infiltration basin 1e is different. That is, the groove 7e is
It is provided in a state curved downward like a weeping cherry from e. The action of this groove 7e is substantially the same as that of the groove shown in FIGS. The other structure is the same as that of the sixth embodiment, and the description is omitted.

(Embodiment 7) FIG. 9 is a perspective view of a rainwater infiltration basin according to still another embodiment of the present invention. 9 is different from Example 5 shown in FIGS. 6 and 7 in the shape of the groove 7f provided in the side wall 2f of the rainwater infiltration basin 1f. That is, the groove 7f is formed in the through hole 3
It is provided spirally from f. The operation of the groove 7f is substantially the same as that of the groove shown in FIGS.

(Eighth Embodiment) FIG. 10 is a perspective view of a rainwater infiltration basin according to still another embodiment of the present invention. When Example 8 shown in FIG. 10 is compared with Example 5 shown in FIG. 6 and FIG. 7, the shape of the groove 7g provided in the side wall 2g of the rainwater infiltration basin 1g is different. That is, a groove 7g connecting the uppermost through-hole 3g and a groove 7g hanging substantially linearly from the through-hole 3g are provided. The operation of this groove 7g is substantially the same as that of the groove shown in FIGS. 6 and 7, and the other structure is the same as that of the sixth embodiment.

[0025]

According to the first aspect of the present invention, since the through-hole is provided in the side wall, which is inclined downward from the top to the bottom as going from the inside to the outside, the exit of the surface of the through-hole is closed with split stone or the like. Also, the gravel does not enter the rainwater infiltration basin, and the rainwater infiltration basin does not become shallow. Therefore, it is safe because the penetration effect of the rainwater penetration basin does not decrease.

According to the second aspect of the present invention, the through hole in the first aspect of the present invention is inclined at an angle such that the outer upper edge is lower than the lower edge inside the through hole.
The effect of the described invention, that is, the surface of the through-hole is hardly blocked by the split stone or the like, and gravel or the like does not enter the rainwater infiltration basin. Therefore, the effect that the penetration effect of the rainwater penetration basin does not decrease is greater.

According to the third aspect of the present invention, since the groove which passes through the through hole is provided in the outer peripheral surface of the side wall, even if the split stone blocks the outside of the through hole along the outer peripheral surface, it passes through the through hole. Rainwater penetrates through this channel and does not reduce its effectiveness.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of a rainwater infiltration basin according to the present invention, and is a vertical sectional view of the rainwater infiltration basin.

FIG. 2A is an explanatory view showing a state in which a split stone blocks a through hole, and FIG. 2B is an explanatory view showing a state in which gravel enters a through hole.

FIG. 3 shows another embodiment of the rainwater infiltration basin of the present invention;
(A) is a perspective view of a rainwater infiltration basin, (B) is AA of (A).
It is sectional drawing in a line.

FIG. 4 shows another embodiment of the rainwater infiltration basin of the present invention;
It is a perspective view of a rainwater penetration basin.

FIG. 5 shows still another embodiment of the rainwater infiltration basin of the present invention, wherein (a) is a perspective view of the rainwater infiltration basin, and (b) is B of (a).
It is sectional drawing in the -B line.

6 shows still another embodiment of the rainwater infiltration basin of the present invention, wherein (a) is a perspective view of the rainwater infiltration basin, (b) is a front view of (a), and (c) is (a) of FIG. Bottom view, (d) is C- of (b)
FIG. 7E is a cross-sectional view taken along the line C in FIG.

FIG. 7 is an explanatory view showing a state in which a split stone blocks a through hole.

FIG. 8 is a perspective view of a rainwater infiltration basin according to yet another embodiment of the present invention.

FIG. 9 is a perspective view of a rainwater infiltration basin according to still another embodiment of the present invention.

FIG. 10 is a perspective view of a rainwater infiltration basin according to still another embodiment of the present invention.

11A and 11B show a conventional rainwater infiltration basin, and FIG. 11A is an explanatory view showing a state in which split stones block through holes, and FIG.
FIG. 4 is an explanatory view showing a state in which gravel enters from a through hole.

[Explanation of symbols]

1, 1a, 1b, 1c, 1d, 1e, 1f, 1g Rainwater seepage measure 2, 2b, 2c, 2d, 2e, 2f, 2g Side wall 3, 3b, 3c, 3d, 3g Through hole 31, 31d Upper edge 32, 32d Lower edge 4, 4d Split stone 5 Gravel 7e, 7f, 7g Groove

Claims (3)

[Claims] 1. A rainwater infiltration basin, characterized in that a side wall is provided with a through-hole that is inclined downward from above as going from inside to outside. 2. The rainwater infiltration basin according to claim 1, wherein the through hole is inclined such that an outer upper edge is lower than a lower edge inside the through hole. 3. The rainwater infiltration basin according to claim 1, wherein a groove passing through the through hole is provided on an outer peripheral surface of the side wall.