JP7075047B2 - Installation structure of drainage lid for planting zone - Google Patents

Installation structure of drainage lid for planting zone Download PDF

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JP7075047B2
JP7075047B2 JP2018100444A JP2018100444A JP7075047B2 JP 7075047 B2 JP7075047 B2 JP 7075047B2 JP 2018100444 A JP2018100444 A JP 2018100444A JP 2018100444 A JP2018100444 A JP 2018100444A JP 7075047 B2 JP7075047 B2 JP 7075047B2
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drainage
planting zone
flat plate
plate portion
lid
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JP2019203348A (en
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暢久 山崎
求美 新川
寛之 沼田
智彦 山口
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株式会社日本設計
株式会社グラウンドデザイン研究所
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description

本発明は、植栽帯に埋設されている排水管の上方に設置する植栽帯用排水蓋の設置構造に関する。 The present invention relates to an installation structure of a drainage lid for a planting zone to be installed above a drainage pipe buried in the planting zone.

昨今、特に都市部の緑化対策として植栽帯が設けられることが多くなっている。植栽帯は通常未舗装（表面が、アスファルト、セメントコンクリート、石等の堅硬な舗装材料で敷き固められていないことをいう。以下同じ。）であり、ある程度の雨水は未舗装の土中に透水される。ただし、近年、ゲリラ豪雨等が頻発するようになっていることから、植栽帯においても雨水排水能力の向上が求められており、そのため、植栽帯に排水管または排水管とともに排水桝等を埋設し、その排水管や排水桝を通じて雨水を排水するという対策が採られるようになってきている。 Nowadays, planting zones are often set up as a measure against greening, especially in urban areas. The planting zone is usually unpaved (the surface is not paved with hard paving materials such as asphalt, cement concrete, stone, etc. The same shall apply hereinafter), and some rainwater is permeable to the unpaved soil. Will be done. However, in recent years, heavy rains such as guerrillas have become more frequent, and it is required to improve the drainage capacity of rainwater in the planting zone. Therefore, drainage pipes or drainage basins are buried in the planting zone. , Measures have been taken to drain rainwater through the drainage pipes and drainage basins.

このような排水管や排水桝の上方には、特許文献１に開示されているグレーチング蓋や特許文献２に開示されている通水蓋のような排水蓋が設置される。しかし、特許文献１や特許文献２に開示されている従来の排水蓋は、基本的に舗装された路面に設置されるもので、これをそのまま未舗装の植栽帯に設置した場合、土砂や落葉等が排水管へ多量に流入し、排水管が閉塞するなどの問題が生じる。 Above such a drainage pipe or a drainage basin, a drainage lid such as the grating lid disclosed in Patent Document 1 or the water passage lid disclosed in Patent Document 2 is installed. However, the conventional drainage lid disclosed in Patent Document 1 and Patent Document 2 is basically installed on a paved road surface, and when this is installed as it is on an unpaved planting zone, earth and sand and fallen leaves are installed. Etc. flow into the drainage pipe in large quantities, causing problems such as the drainage pipe being blocked.

特開２００７－３０８９５４号公報JP-A-2007-308954 特開２００１－２６２６８０号公報Japanese Unexamined Patent Publication No. 2001-262680

本発明が解決しようとする課題は、植栽帯に埋設されている排水管への土砂や落葉等の流入を抑制できる植栽帯用排水蓋の設置構造を提供することにある。 An object to be solved by the present invention is to provide an installation structure of a drainage lid for a planting zone that can suppress the inflow of earth and sand, fallen leaves, etc. into a drainage pipe buried in the planting zone.

本発明の一観点によれば、次の植栽帯用排水蓋の設置構造が提供される。
植栽帯に埋設されている排水管の上方に設置する植栽帯用排水蓋の設置構造であって、
前記植栽帯用排水蓋は、略中央に排水孔を有する平板部と、前記排水孔を覆うように格子状または網目状に形成された覆い部とを備え、
前記平板部が、前記排水管の上方における植栽帯の未舗装の地盤面に載置されている、植栽帯用排水蓋の設置構造。 According to one aspect of the present invention, the following installation structure of a drainage lid for a planting zone is provided.
It is an installation structure of the drainage lid for the planting zone installed above the drainage pipe buried in the planting zone.
The drainage lid for a planting zone includes a flat plate portion having a drainage hole substantially in the center, and a covering portion formed in a grid pattern or a mesh shape so as to cover the drainage hole.
An installation structure of a drainage lid for a planting zone, in which the flat plate portion is placed on an unpaved ground surface of the planting zone above the drainage pipe.

この設置構造において植栽帯用排水蓋は略中央に排水孔を有する平板部と、排水孔を覆うように格子状または網目状に形成された覆い部を備えるから、大きな石や落葉等はこの格子状または網目状の覆い部に引っ掛かる。また、植栽帯用排水蓋の平板部は植栽帯の地盤面に載置されているから、平板部の上面は平板部の厚さの分だけ植栽帯の地盤面より上に位置することとなり、土砂や落葉等が平板部の上面へ乗り上げにくくなる。さらに、排水管へ通じる排水孔は平板部の略中央にあるから、雨水とともに流れ込んでくる土砂や落葉等は、平板部の上面を伝わってから排水孔へ向かうことになる。これらにより、排水管への土砂や落葉等の流入が抑制される。
加えて、植栽帯用排水蓋の平板部が植栽帯の地盤面に載置されているということは、排水管の周囲の地盤面が平板部で覆われているということであり、これにより排水管の周囲の洗掘（浸食作用の一つで、雨水の流れによって排水管の周囲の土砂が削り崩されて窪みができる現象をいう。この窪みができると排水管へ雨水が流れ込みにくくなる。以下同じ。）を抑制することもできる。 In this installation structure, the drainage lid for the planting zone has a flat plate part having a drainage hole in the center and a covering part formed in a grid pattern or a mesh shape so as to cover the drainage hole. It gets caught in a shaped or mesh-like covering. In addition, since the flat plate portion of the drainage lid for the planting zone is placed on the ground surface of the planting zone, the upper surface of the flat plate portion is located above the ground surface of the planting zone by the thickness of the flat plate portion. It becomes difficult for earth and sand, fallen leaves, etc. to ride on the upper surface of the flat plate. Further, since the drainage hole leading to the drainage pipe is located substantially in the center of the flat plate portion, the earth and sand and fallen leaves that flow in with the rainwater travel to the drainage hole after being transmitted to the upper surface of the flat plate portion. As a result, the inflow of earth and sand, fallen leaves, etc. into the drainage pipe is suppressed.
In addition, the fact that the flat plate portion of the drainage lid for the planting zone is placed on the ground surface of the planting zone means that the ground surface around the drainage pipe is covered with the flat plate portion, thereby draining. Scouring around the pipe (one of the erosion actions, which is a phenomenon in which the earth and sand around the drainage pipe is scraped off by the flow of rainwater to form a dent. When this dent is formed, it becomes difficult for rainwater to flow into the drainage pipe. The same applies hereinafter.) Can also be suppressed.

この設置構造において植栽帯用排水蓋の覆い部は平板部の外側面から上方に立ち上がる複数の縦桟を有し、複数の縦桟のそれぞれの立上り部が平板部の外側面から外方に突出する構成とすることができる。この構成により、土砂や落葉等が平板部の外側面から外方に突出する立上り部に引っ掛かりやすくなり、排水管への土砂や落葉等の流入抑制効果が向上する。 In this installation structure, the covering portion of the drainage lid for the planting zone has a plurality of vertical rails rising upward from the outer surface of the flat plate portion, and each rising portion of the plurality of vertical rails protrudes outward from the outer surface of the flat plate portion. It can be configured to be used. With this configuration, earth and sand and fallen leaves are easily caught on the rising portion protruding outward from the outer surface of the flat plate portion, and the effect of suppressing the inflow of earth and sand and fallen leaves into the drain pipe is improved.

この構成において、隣接する立上り部間の平板部の外側面は逆テーパとすることができる。これにより、土砂や落葉等が平板部の上面へ乗り上げにくくなり、排水管への土砂や落葉等の流入抑制効果が向上する。 In this configuration, the outer surface of the flat plate portion between the adjacent rising portions can be reverse-tapered. As a result, it becomes difficult for earth and sand and fallen leaves to ride on the upper surface of the flat plate portion, and the effect of suppressing the inflow of earth and sand and fallen leaves into the drainage pipe is improved.

また、隣接する縦桟間の隙間は下方に向けて狭くなるように構成することもできる。これにより、土砂や落葉等が隣接する縦桟間に引っ掛かりやすくなり、排水管への土砂や落葉等の流入抑制効果が向上する。 Further, the gap between the adjacent vertical rails may be configured to be narrowed downward. This makes it easier for earth and sand, fallen leaves, etc. to get caught between adjacent vertical rails, and the effect of suppressing the inflow of earth and sand, fallen leaves, etc. into the drainage pipe is improved.

この設置構造において植栽帯用排水蓋は、平板部から下方に伸びる連結部を備え、この連結部と排水管とを着脱可能に連結するとこができる、これにより、植栽帯用排水蓋を排水管の上方に確実に設置することができる。 In this installation structure, the drainage lid for the planting zone is provided with a connecting portion extending downward from the flat plate portion, and the connecting portion and the drainage pipe can be detachably connected to each other, whereby the drainage lid for the planting zone can be connected to the drainage pipe. It can be securely installed above the.

本発明によれば、植栽帯に埋設されている排水管への土砂や落葉等の流入を抑制できる。 According to the present invention, it is possible to suppress the inflow of earth and sand, fallen leaves, etc. into the drainage pipe buried in the planting zone.

本発明の一実施形態である植栽帯用排水蓋の設置構造を示す概念図。The conceptual diagram which shows the installation structure of the drainage lid for a planting zone which is one Embodiment of this invention. 図１に示した植栽帯用排水蓋の上方斜視図。The upper perspective view of the drainage lid for a planting zone shown in FIG. 図１に示した植栽帯用排水蓋の下方斜視図。The lower perspective view of the drainage lid for a planting zone shown in FIG. 図１に示した植栽帯用排水蓋の平面図。The plan view of the drainage lid for a planting zone shown in FIG. 図１に示した植栽帯用排水蓋のＡ－Ａ線断面図。FIG. 1A is a cross-sectional view taken along the line AA of the drainage lid for the planting zone shown in FIG. 図１に示した植栽帯用排水蓋のＢ－Ｂ線断面図。BB line sectional view of the drainage lid for a planting zone shown in FIG. 1. 図１に示した植栽帯用排水蓋の連結部と排水管との連結構造を示す分解斜視図。The exploded perspective view which shows the connection structure of the connection part of the drainage lid for a planting zone and the drainage pipe shown in FIG. 排水管の周囲の洗掘を模式的に示す説明図。Explanatory drawing schematically showing scour around the drainage pipe.

図１に、本発明の一実施形態である植栽帯用排水蓋の設置構造を示している。また、図２～６には図１に示した植栽帯用排水蓋を単独で示している。 FIG. 1 shows an installation structure of a drainage lid for a planting zone, which is an embodiment of the present invention. Further, FIGS. 2 to 6 show the drainage lid for the planting zone shown in FIG. 1 alone.

図１に示しているように、この実施形態において植栽帯用排水蓋１００は、未舗装の植栽帯２００に鉛直方向に埋設されている排水管３００の上方に設置されている。また、この排水管３００の下方には雨水浸透桝４００が設置されるとともに雨水搬送管５００が接続されている。植栽帯２００の周りには舗装された遊歩道６００が設置されており、雨水はこの遊歩道６００からも植栽帯２００へ流れ込んでくる。また、未舗装の植栽帯２００には土砂や落葉等（図示省略）が多く堆積しており、植栽帯用排水蓋１００へは雨水とともに土砂や落葉等が流れ込んでくる。この土砂や落葉等がそのまま排水管３００へ流入すると、排水管３００が閉塞するなどの問題が生じる。そこで、この実施形態の植栽帯用排水蓋の設置構造は、以下に述べるように、排水管３００への土砂や落葉等の流入を抑制できる構造としている。
なお、この実施形態において排水管３００の下方には雨水浸透桝４００が設置されるとともに雨水搬送管５００が接続されているが、これに限定されず、雨水浸透桝が設置されず、雨水搬送管のみが排水管に接続されていてもよい。 As shown in FIG. 1, in this embodiment, the drainage lid 100 for the planting zone is installed above the drainage pipe 300 embedded in the unpaved planting zone 200 in the vertical direction. Further, a rainwater infiltration basin 400 is installed below the drainage pipe 300, and a rainwater transport pipe 500 is connected to the drainage pipe 300. A paved promenade 600 is installed around the planting zone 200, and rainwater also flows from the promenade 600 into the planting zone 200. In addition, a large amount of earth and sand, fallen leaves, etc. (not shown) are accumulated in the unpaved planting zone 200, and earth and sand, fallen leaves, etc. flow into the drainage lid 100 for the planting zone together with rainwater. If this earth and sand, fallen leaves, etc. flow into the drainage pipe 300 as it is, problems such as blockage of the drainage pipe 300 occur. Therefore, the installation structure of the drainage lid for the planting zone of this embodiment has a structure capable of suppressing the inflow of earth and sand, fallen leaves, etc. into the drainage pipe 300, as described below.
In this embodiment, the rainwater infiltration basin 400 is installed below the drainage pipe 300 and the rainwater transport pipe 500 is connected, but the present invention is not limited to this, and the rainwater infiltration basin is not installed and the rainwater transport pipe is not installed. Only may be connected to the drain pipe.

まず、植栽帯用排水蓋１００の構成について図２～６を参照しつつ説明すると、この植栽帯用排水蓋１００は鋳鉄製であり、平板部１０と覆い部２０と連結部３０とを備えている。 First, the configuration of the drainage lid 100 for the planting zone will be described with reference to FIGS. 2 to 6. The drainage lid 100 for the planting zone is made of cast iron and includes a flat plate portion 10, a covering portion 20, and a connecting portion 30. There is.

この実施形態において平板部１０は四角形（正方形状）であり、その略中央に円形状の排水孔１１を有する。なお、平板部１０の形状は四角形状（正方形状）には限定されず、例えば長方形状、多角形状、円形状や楕円形状であってもよい。また、排水孔１１の形状も円形状には限定されない。 In this embodiment, the flat plate portion 10 is a quadrangle (square shape) and has a circular drainage hole 11 in the substantially center thereof. The shape of the flat plate portion 10 is not limited to a rectangular shape (square shape), and may be, for example, a rectangular shape, a polygonal shape, a circular shape, or an elliptical shape. Further, the shape of the drain hole 11 is not limited to the circular shape.

この実施形態において覆い部２０は、平板部１０の排水孔１１を覆うように格子状に形成されている。具体的には、この実施形態において覆い部２０は、平板部１０の４つの外側面１０ａからそれぞれ上方に立ち上がる複数の縦桟２１を有するとともに、対向する縦桟２１，２１の上端部どうしを連結する横桟２２を有し、これら縦桟２１および横桟２２の組合せにより、排水孔１１を覆うように格子状に形成されている。なお、図２に表れているように、この実施形態において縦桟２１の上端部は全て同じ高さというわけではなく、異なる高さの横桟２２が形成されている。また、これら複数の縦桟２１の立上り部２１ａは平板部１０の外側面１０ａから外方に突出している。 In this embodiment, the covering portion 20 is formed in a grid pattern so as to cover the drain hole 11 of the flat plate portion 10. Specifically, in this embodiment, the covering portion 20 has a plurality of vertical rails 21 that rise upward from the four outer surfaces 10a of the flat plate portion 10, and connects the upper end portions of the vertical rails 21 and 21 that face each other. The cross rails 22 are formed in a grid pattern so as to cover the drainage holes 11 by the combination of the vertical rails 21 and the horizontal rails 22. As shown in FIG. 2, in this embodiment, the upper ends of the vertical rails 21 are not all at the same height, and horizontal rails 22 having different heights are formed. Further, the rising portions 21a of the plurality of vertical bars 21 project outward from the outer surface 10a of the flat plate portion 10.

さらに、隣接する立上り部２１ａ，２１ａ間の平板部１０の外側面１０ａは、図５に明確に表れているように逆テーパとなっている。なお、逆テーパとは周知のとおり上方に向かうに従い拡大する形状をいう。また、図５および図６に明確に表れているように、隣接する縦桟２１，２１間の隙間Ｓは下方に向けて狭くなっている。
なお、この実施形態において、外側面１０ａを鉛直方向の面や正テーパ（上方に向かうに従い縮小する形状）とすることもできるし、また、隣接する縦桟２１，２１間の上方の隙間と下方の隙間を同じ間隔とすることや、上方に向けて狭くすることもできる。土砂や落葉等を引っ掛かりやすくし、土砂や落葉等の排水管への流入抑制効果を向上させるには、この実施形態のように外側面１０ａを逆テーパとするとともに、隙間Ｓが下方に向けて狭くなっていることが好ましい。 Further, the outer surface 10a of the flat plate portion 10 between the adjacent rising portions 21a and 21a has a reverse taper as clearly shown in FIG. As is well known, the reverse taper is a shape that expands as it goes upward. Further, as clearly shown in FIGS. 5 and 6, the gap S between the adjacent vertical rails 21 and 21 is narrowed downward.
In this embodiment, the outer surface 10a can be a vertical surface or a positive taper (a shape that shrinks as it goes upward), and the upper gap and the lower side between the adjacent vertical rails 21 and 21. The gaps between the two can be the same, or the gaps can be narrowed upward. In order to make it easier for earth and sand and fallen leaves to get caught and to improve the effect of suppressing the inflow of earth and sand and fallen leaves into the drainage pipe, the outer surface 10a is made a reverse taper as in this embodiment, and the gap S is directed downward. It is preferably narrow.

また、この実施形態において覆い部２０は、縦桟２１および横桟２２の組合せにより格子状に形成したが、複数の縦桟２１および横桟２２の組合せにより網目状に形成することもできる。また、複数の縦桟２１は平板部１０の４つの外側面１０ａから立ち上げるのではなく、平板部１０の上面１０ｂから立ち上げるようにすることもできる。要するに覆い部２０は、排水孔１１を覆うように格子状または網目状に形成すればよい。 Further, in this embodiment, the covering portion 20 is formed in a grid pattern by the combination of the vertical rail 21 and the horizontal rail 22, but can also be formed in a mesh shape by the combination of the plurality of vertical rails 21 and the horizontal rail 22. Further, the plurality of vertical bars 21 may be raised from the upper surface 10b of the flat plate portion 10 instead of being raised from the four outer surfaces 10a of the flat plate portion 10. In short, the covering portion 20 may be formed in a grid pattern or a mesh pattern so as to cover the drainage hole 11.

この実施形態において連結部３０は平板部１０から下方に伸びるように形成されており、この連結部３０と排水管３００とが着脱可能に連結される。具体的には、この実施形態において連結部３０は、平板部１０の排水孔１１を囲むように排水孔１１の周囲に等間隔で３箇所に形成されており、排水管３００と連結するために連結溝３１が３箇所の連結部３０に各々形成されている。そして、排水管３００と連結する際には図７に示しているように、排水管３００に連結ピン３０１を設置するとともに、この連結ピン３０１に連結溝３１の開口端を嵌め合せ、植栽帯用排水蓋１００を反時計回りに回転させる。これにより、植栽帯用排水蓋１００が連結部３０を介して排水管３００に連結される。一方、植栽帯用排水蓋１００を排水管３００から取り外す際には、植栽帯用排水蓋１００を時計回りに回転させて、連結ピン３０１を連結溝３１の開口端から取り外す。このように、この実施形態では、連結部３０を介して植栽帯用排水蓋１００を排水管３００の上方に確実に設置することができる。しかも、この実施形態の連結部３０によれば、前述のとおりワンタッチ方式で植栽帯用排水蓋１００を排水管３００に着脱可能であるので、植栽帯用排水蓋１００の設置または撤去の作業や、排水管３００の清掃作業が容易となる。
なお、この実施形態では連結部３０を介さずに、単に植栽帯用排水蓋を排水管の上方に設置することもできる。植栽帯用排水蓋を排水管の上方に確実に設置するには、この実施形態のように連結部を備えることが好ましい。また、連結部の構成としては、この実施形態の連結部３０のように連結溝３１と連結ピン３０１によるワンタッチ方式とすることがより好ましい。 In this embodiment, the connecting portion 30 is formed so as to extend downward from the flat plate portion 10, and the connecting portion 30 and the drainage pipe 300 are detachably connected to each other. Specifically, in this embodiment, the connecting portions 30 are formed at three positions at equal intervals around the drain holes 11 so as to surround the drain holes 11 of the flat plate portion 10, and are connected to the drain pipe 300. The connecting groove 31 is formed in each of the three connecting portions 30. Then, when connecting to the drainage pipe 300, as shown in FIG. 7, a connecting pin 301 is installed in the drainage pipe 300, and the open end of the connecting groove 31 is fitted to the connecting pin 301 for a planting zone. Rotate the drain lid 100 counterclockwise. As a result, the drainage lid 100 for the planting zone is connected to the drainage pipe 300 via the connecting portion 30. On the other hand, when removing the drainage lid 100 for the planting zone from the drainage pipe 300, the drainage lid 100 for the planting zone is rotated clockwise to remove the connecting pin 301 from the opening end of the connecting groove 31. As described above, in this embodiment, the drainage lid 100 for the planting zone can be reliably installed above the drainage pipe 300 via the connecting portion 30. Moreover, according to the connecting portion 30 of this embodiment, since the drainage lid 100 for the planting zone can be attached to and detached from the drainage pipe 300 by the one-touch method as described above, the work of installing or removing the drainage lid 100 for the planting zone can be performed. Cleaning work of the drain pipe 300 becomes easy.
In this embodiment, the drainage lid for the planting zone can be simply installed above the drainage pipe without going through the connecting portion 30. In order to securely install the drainage lid for the planting zone above the drainage pipe, it is preferable to provide a connecting portion as in this embodiment. Further, as the configuration of the connecting portion, it is more preferable to use a one-touch method using the connecting groove 31 and the connecting pin 301 as in the connecting portion 30 of this embodiment.

次に、この実施形態の植栽帯用排水蓋の設置構造の作用効果について説明する。
この実施形態において植栽帯用排水蓋１００は排水孔１１を覆うように格子状に形成された覆い部２０を備えるから、大きな石や落葉等はこの格子状の覆い部２０に引っ掛かる。また、植栽帯用排水蓋１００の平板部１０は、図１に示しているように植栽帯２００の地盤面ＧＬに載置されているから、平板部１０の上面１０ｂは平板部１０の厚さの分だけ植栽帯２００の地盤面ＧＬより上に位置することとなり、土砂や落葉等が平板部１０の上面１０ｂへ乗り上げにくくなる。さらに、排水管３００へ通じる排水孔１１は平板部１０の略中央にあるから、雨水とともに流れ込んでくる土砂や落葉等は、平板部１０の上面１０ｂを伝わってから排水孔１１へ向かうことになる。これらにより、排水管３００への土砂や落葉等の流入が抑制される。
加えて、植栽帯用排水蓋１００の平板部１０が植栽帯２００の地盤面ＧＬに載置されているということは、排水管３００の周囲の地盤面ＧＬが平板部１０で覆われているということであり、これにより排水管３００の周囲の洗掘を抑制することができる。ここで、洗掘とは、例えば図８に模式的に示しているように、雨水の流れによって排水管３００の周囲の土砂が削り崩されて窪みＤができる現象をいう。この実施形態では、図１に示しているように排水管３００の周囲の地盤面ＧＬが平板部１０で覆われているから、排水管３００の周囲の土砂が削り崩されず、洗掘を抑制することができる。なお、この実施形態において排水管３００の上部側面には透水用の孔は設けられていないので、図８に示しているように洗掘により排水管３００の上部周囲に窪みＤができると、その窪みＤに雨水が溜まってしまうといった問題が生じるところ、この実施形態によれば洗掘を抑制することができるので、前述の問題が生じることを抑制できる。 Next, the operation and effect of the installation structure of the drainage lid for the planting zone of this embodiment will be described.
In this embodiment, since the drainage lid 100 for the planting zone includes a covering portion 20 formed in a grid pattern so as to cover the drainage hole 11, large stones, fallen leaves, and the like are caught by the grid-shaped covering portion 20. Further, since the flat plate portion 10 of the drainage lid 100 for the planting zone is placed on the ground surface GL of the planting zone 200 as shown in FIG. 1, the upper surface 10b of the flat plate portion 10 is the thickness of the flat plate portion 10. It will be located above the ground surface GL of the planting zone 200 by the amount of the above, and it will be difficult for earth and sand, fallen leaves, etc. to ride on the upper surface 10b of the flat plate portion 10. Further, since the drainage hole 11 leading to the drainage pipe 300 is located substantially in the center of the flat plate portion 10, earth and sand, fallen leaves, etc. that flow in with rainwater travel to the drainage hole 11 after being transmitted through the upper surface 10b of the flat plate portion 10. .. As a result, the inflow of earth and sand, fallen leaves, etc. into the drainage pipe 300 is suppressed.
In addition, the fact that the flat plate portion 10 of the drainage lid 100 for the planting zone is placed on the ground surface GL of the planting zone 200 means that the ground surface GL around the drainage pipe 300 is covered with the flat plate portion 10. This means that scouring around the drainage pipe 300 can be suppressed. Here, scouring refers to a phenomenon in which the earth and sand around the drainage pipe 300 is scraped off by the flow of rainwater to form a dent D, for example, as schematically shown in FIG. In this embodiment, as shown in FIG. 1, since the ground surface GL around the drainage pipe 300 is covered with the flat plate portion 10, the earth and sand around the drainage pipe 300 is not scraped off and scouring is suppressed. be able to. In this embodiment, since the hole for water permeability is not provided on the upper side surface of the drainage pipe 300, if a dent D is formed around the upper part of the drainage pipe 300 by scour as shown in FIG. 8, the dent D is formed. Where there is a problem that rainwater collects in the depression D, scouring can be suppressed according to this embodiment, so that the above-mentioned problem can be suppressed.

以上がこの実施形態の植栽帯用排水蓋の設置構造による基本的な作用効果であるが、この実施形態によれば、付加的に以下の作用効果が得られる。
すなわち、この実施形態では、複数の縦桟２１のそれぞれの立上り部２１ａが平板部１０の外側面１０ａから外方に突出しているから、土砂や落葉等が平板部１０の外側面１０ａから外方に突出する立上り部２１ａに引っ掛かりやすくなり、排水管３００への土砂や落葉等の流入抑制効果が向上する。
また、この実施形態では、複数の縦桟２１の隣接する立上り部２１ａ，２１ａ間の平板部の外側面１０ａは逆テーパとなっているから、土砂や落葉等が平板部１０の上面１０ｂへさらに乗り上げにくくなり、排水管３００への土砂や落葉等の流入抑制効果が向上する。
さらに、この実施形態では、隣接する縦桟２１，２１間の隙間Ｓが下方に向けて狭くなっているから、土砂や落葉等が隣接する縦桟２１，２１間に引っ掛かりやすくなり、排水管３００への土砂や落葉等の流入抑制効果が向上する。 The above is the basic action and effect of the installation structure of the drainage lid for the planting zone of this embodiment, but according to this embodiment, the following action and effect can be additionally obtained.
That is, in this embodiment, since each rising portion 21a of the plurality of vertical rails 21 projects outward from the outer surface 10a of the flat plate portion 10, earth and sand, fallen leaves, etc. are outward from the outer surface 10a of the flat plate portion 10. It becomes easy to get caught in the rising portion 21a protruding from the drainage pipe 300, and the effect of suppressing the inflow of earth and sand, fallen leaves, etc. into the drainage pipe 300 is improved.
Further, in this embodiment, since the outer surface 10a of the flat plate portion between the adjacent rising portions 21a and 21a of the plurality of vertical rails 21 has a reverse taper, earth and sand, fallen leaves, etc. are further applied to the upper surface 10b of the flat plate portion 10. It becomes difficult to ride on, and the effect of suppressing the inflow of earth and sand, fallen leaves, etc. into the drain pipe 300 is improved.
Further, in this embodiment, since the gap S between the adjacent vertical rails 21 and 21 is narrowed downward, it becomes easy for earth and sand, fallen leaves, etc. to get caught between the adjacent vertical rails 21 and 21 and the drainage pipe 300. The effect of suppressing the inflow of earth and sand and fallen leaves to the water is improved.

以上、本発明の実施形態を説明したが、本発明がこの実施形態に限定されず各種の変形が可能であることは既に述べているところであり、これら以外にも本発明の技術的思想を逸脱しない範囲内で各種の変形が可能であることは当業者に自明である。 Although the embodiments of the present invention have been described above, it has already been described that the present invention is not limited to this embodiment and various modifications are possible, and other than these, the technical idea of the present invention is deviated. It is self-evident to those skilled in the art that various modifications are possible within the range that does not occur.

１００ 植栽帯用排水蓋
１０ 平板部
１０ａ 外側面
１０ｂ 上面
１１ 排水孔
２０ 覆い部
２１ 縦桟
２１ａ 立上り部
３０ 連結部
３１ 連結溝
２００ 植栽帯
３００ 排水管
３０１ 連結ピン
４００ 雨水浸透桝
５００ 雨水搬送管
６００ 遊歩道 100 Drainage lid for planting zone 10 Flat plate part 10a Outer side surface 10b Top surface 11 Drainage hole 20 Covering part 21 Vertical rail 21a Rising part 30 Connecting part 31 Connecting groove 200 Planting zone 300 Drainage pipe 301 Connecting pin 400 Rainwater infiltration basin 500 Rainwater transport pipe 600 Promenade

Claims (3)

植栽帯に埋設されている排水管の上方に設置する植栽帯用排水蓋の設置構造であって、
前記植栽帯用排水蓋は、略中央に排水孔を有する平板部と、前記排水孔を覆うように格子状または網目状に形成された覆い部とを備え、
前記平板部が、前記排水管の上方における植栽帯の未舗装の地盤面に載置され、
前記覆い部は前記平板部の外側面から上方に立ち上がる複数の縦桟を有し、前記複数の縦桟のそれぞれの立上り部が前記平板部の外側面から外方に突出し、
隣接する立上り部間の前記平板部の外側面は、前記地盤面に対して空間を挟んで斜め上方から対向するように、前記地盤面に対して傾斜する逆テーパ面を含む、植栽帯用排水蓋の設置構造。 It is an installation structure of the drainage lid for the planting zone installed above the drainage pipe buried in the planting zone.
The drainage lid for a planting zone includes a flat plate portion having a drainage hole substantially in the center, and a covering portion formed in a grid pattern or a mesh shape so as to cover the drainage hole.
The flat plate portion is placed on the unpaved ground surface of the planting zone above the drainage pipe.
The covering portion has a plurality of vertical rails rising upward from the outer surface of the flat plate portion, and each rising portion of the plurality of vertical rails projects outward from the outer surface of the flat plate portion.
The outer surface of the flat plate portion between the adjacent rising portions includes a reverse tapered surface inclined with respect to the ground surface so as to face the ground surface from diagonally above with a space in between, and drainage for a planting zone. Installation structure of the lid. 前記覆い部は、隣接する縦桟間の隙間が下方に向けて狭くなっている、請求項１に記載の植栽帯用排水蓋の設置構造。 The drainage lid for a planting zone according to claim 1, wherein the covering portion has a narrow gap between adjacent vertical rails. 前記植栽帯用排水蓋は、前記平板部から下方に伸びる連結部を備え、この連結部と前記排水管とが着脱可能に連結されている、請求項１または２に記載の植栽帯用排水蓋の設置構造。 The drainage lid for a planting zone according to claim 1 or 2 , wherein the drainage lid for a planting zone includes a connecting portion extending downward from the flat plate portion, and the connecting portion and the drainage pipe are detachably connected to each other. Installation structure.
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Citations (5)

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Publication number Priority date Publication date Assignee Title
JP3119232U (en) 2005-12-05 2006-02-16 東海電工株式会社 Drain lid
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JP2016020631A (en) 2012-12-12 2016-02-04 簡佑家 Catch basin capable of coping with step difference
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JP2018059362A (en) 2016-10-07 2018-04-12 居林遠藤建設株式会社 Catch basin, u-shaped side gutter, and construction method

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US4400272A (en) * 1981-06-08 1983-08-23 Logsdon Duane D Drain grate with adjustable weirs
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3119232U (en) 2005-12-05 2006-02-16 東海電工株式会社 Drain lid
CN102493546A (en) 2011-11-14 2012-06-13 联塑市政管道（河北）有限公司 Plastic residue screen used for water drainage
JP2016020631A (en) 2012-12-12 2016-02-04 簡佑家 Catch basin capable of coping with step difference
JP2016125209A (en) 2014-12-26 2016-07-11 有限会社ウイング Grating for exhaust port of l-shaped side gutter
JP2018059362A (en) 2016-10-07 2018-04-12 居林遠藤建設株式会社 Catch basin, u-shaped side gutter, and construction method

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