JP2007071019A - Rainwater storage facilities - Google Patents

Rainwater storage facilities Download PDF

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JP2007071019A
JP2007071019A JP2006302213A JP2006302213A JP2007071019A JP 2007071019 A JP2007071019 A JP 2007071019A JP 2006302213 A JP2006302213 A JP 2006302213A JP 2006302213 A JP2006302213 A JP 2006302213A JP 2007071019 A JP2007071019 A JP 2007071019A
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water
water storage
rainwater
resin
storage facility
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JP4316601B2 (en
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Hideto Nakamura
秀人 中村
Masato Ikeuchi
正人 池内
Daisuke Muto
大介 武藤
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Furukawa Electric Co Ltd
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/108—Rainwater harvesting

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Abstract

<P>PROBLEM TO BE SOLVED: To provide rainwater storage facilities in which no place must be secured for a settlement tank, the settlement tank can easily be installed and the related work costs largely be saved. <P>SOLUTION: In the rainwater storage facilities which are provided with an upward open water reservoir part 2 having an inner layer 3 of an impermeable or semi-permeable sheet in an inner surface provided by having dug down the ground 1, a space retaining skeleton assembly consisting of a plurality of resin-made skeleton blocks 4 and located within the water reservoir part 2, and a covering layer 9 on top of the water reservoir part 2, the rainwater storage facilities according to this invention are further provided with a rainwater flow inlet 10 at the water reservoir part 2 and a settlement tank 40 having a resin-made partition wall 30 constructed in the way that it can enclose the resin-made skeleton blocks 4 located near the rainwater flow inlet 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ビルあるいは集合住宅、特に団地等において、雨水を防火用や散水用等の用途に使用すべく貯水するための雨水の貯水施設に関するものである。   The present invention relates to a rainwater storage facility for storing rainwater to be used for fire prevention, watering, etc. in a building or a housing complex, particularly a housing complex.

従来から、例えば、大きなビルや団地等において、雨水を防火水として、あるいは花壇や菜園等の散水用として利用するために、ビルや団地周辺の空き地、あるいは自転車置き場等の地下に貯水タンクを設け、これに雨水を貯水する試みが種々行われてきている。
特に昨今では、夏季の水不足等に備えて、新しく団地を建設するような場合には、しばしばこの種の雨水の貯水施設が設けられるようになってきている。 Conventionally, for example, in large buildings or housing estates, water tanks have been installed in open spaces around buildings and housing areas or in the basement of bicycle storage areas, etc. in order to use rainwater as fire prevention water or for watering flower beds or vegetable gardens. Various attempts have been made to store rainwater.
In particular, in recent years, in the case of constructing a new housing complex in preparation for water shortages in summer, this type of rainwater storage facility is often provided.

この種の典型的な例として特許文献１に記載の貯水施設がある。
これは図４に示すように、予め地面１を掘り下げて、例えば平面形状が長方形の貯水部２を形成し、しかる後この貯水部２の内表面（側面及び底面を含む）に砂利等で内張層３を形成する。尚、最近では、貯水部２の内部に泥等が内張層３の隙間から侵入するのを極力防止するため、砂利に代えて遮水性シートもしくは半透水性シートで側面や底面を覆って内張層３を構成する場合が多くなってきている。 As a typical example of this kind, there is a water storage facility described in Patent Document 1.
As shown in FIG. 4, the ground 1 is dug down in advance to form a water reservoir 2 having a rectangular planar shape, for example, and then the inner surface (including side and bottom surfaces) of the water reservoir 2 is filled with gravel or the like. The tension layer 3 is formed. Recently, in order to prevent mud and the like from entering the water storage part 2 from the gap of the lining layer 3 as much as possible, the side and bottom surfaces are covered with a water-impervious sheet or semi-permeable sheet instead of gravel. In many cases, the tension layer 3 is formed.

さて内張層３を形成したら貯水部２内に箱型の樹脂製骨格ブロック４を上下縦横に組み上げて、その内部に貯水空間を有する空間保持骨格を形成する。空間保持骨格ができ上がったら、最後に空間保持骨格上に、例えば樹脂製の天板を敷き詰め、該天板上に遮水性シートもしくは半透水性シートを被せたり、あるいはさらにこの遮水性シートもしくは半透水性シート上にさらに土を埋め戻したりして被覆層９を形成したものである。   When the lining layer 3 is formed, a box-shaped resin skeleton block 4 is assembled vertically and horizontally in the water storage section 2 to form a space holding skeleton having a water storage space therein. When the space holding skeleton is completed, finally, for example, a resin top plate is spread on the space holding skeleton, and a water-impervious sheet or semi-permeable sheet is covered on the top plate, or this water-impervious sheet or semi-permeable sheet is further covered. The covering layer 9 is formed by further backfilling soil on the adhesive sheet.

また図４において、符号１０は、貯水部２に雨水を導くための流入口を、符号１１はこの貯水部２から河川等に接続されている配水管に繋がっている流出口を示している。   In FIG. 4, reference numeral 10 denotes an inflow port for guiding rainwater to the water storage unit 2, and reference numeral 11 denotes an outflow port connected from the water storage unit 2 to a water pipe connected to a river or the like.

ところで前記樹脂製骨格ブロック４としてはこれまで種々の形状のものが考え出されており、前述した箱型以外にも円筒型、トレイ型等がある。但し、いずれの形状のものでも、内部にできるだけ大きな貯水空間を構成できること、かつ被覆層９の上からの圧力に対して充分な耐圧強度があること、樹脂製骨格ブロック４同士の組み立てが容易なこと、の少なくとも３点が考慮され、設計されている。   By the way, as the resin skeleton block 4, those having various shapes have been conceived so far, and there are a cylindrical type, a tray type and the like in addition to the box type described above. However, in any shape, a water storage space as large as possible can be formed inside, and there is sufficient pressure resistance against the pressure from the top of the coating layer 9, and the resin skeleton blocks 4 can be easily assembled together. At least three points are considered and designed.

特公平４−２６６４８号公報（特開昭６３−２６８８２３号）Japanese Patent Publication No. 4-26648 (Japanese Patent Laid-Open No. 63-268823)

前述した特許文献１に記載されている雨水の貯水施設においては、貯水部２に流入する雨水が、例えば集合住宅等ビルの屋上に溜まったものだけであればそれほど問題はないが、地面に降った雨水も含めて、ビルの側溝等地表に設けられた排水溝を伝って流入してくるような場合には、雨水の中に大きな石や砂利、あるいは土の塊といったかなり大きなものが混じって流れ込んでくる。
このように石や砂利等が貯水部２内に流れ込んでくると貯水部２の底にこれらが拡散し、堆積し、次第に貯水部２内の貯水可能な容積が減少してしまう、という問題がある。 In the rainwater storage facility described in Patent Document 1 described above, there is no problem if the rainwater flowing into the water storage section 2 is only collected on the roof of a building such as an apartment house. If the rainwater flows in through a drainage ditch provided on the ground, such as a side ditch of a building, there is a large amount of large stones, gravel, or a lump of soil mixed in the rainwater. It flows in.
When stones, gravel, etc. flow into the water storage part 2 in this way, they diffuse and accumulate at the bottom of the water storage part 2, and the volume of water that can be stored in the water storage part 2 gradually decreases. is there.

図４に示すように樹脂製骨格ブロック４で構成した空間保持骨格の空隙部は、作業者がその空隙部に入って前記砂利等を取り除くには狭過ぎる。また仮に作業者がこの空隙部に入れたとしても、ほぼ密閉空間であるこの空隙部で作業をするには危険が大き過ぎる。   As shown in FIG. 4, the space portion of the space holding skeleton formed by the resin skeleton block 4 is too narrow for an operator to enter the space and remove the gravel and the like. Even if an operator enters the gap, the danger is too great to work in the gap, which is a substantially sealed space.

そこで、雨水に石や砂利等が混入する可能性が大きい場合には、図４に示す流入口１０に到る流路１２の途中に図示しない沈殿槽を設け、この沈殿槽で石や砂利等大き目のものを沈殿させ、この沈殿槽をオーバーフローさせたものを貯水部２の流入口１０へと導いていた。
しかしながらこの方法の場合、前記沈殿槽として大きなものを設ければ、石や砂利あるいはさらに細かいものもこの沈殿槽に沈殿させ、除去できるが、実際には大きな沈殿槽を設けるだけの設置場所の確保が難しい、という問題がある。加えて大きな沈殿槽を設けるには大きな穴を地面に掘らねばならず、しかもその周囲や底にはコンクリートで壁を形成する必要もあり、設置費用が極めて高価なものになってしまう、という問題もあった。 Therefore, when there is a high possibility that stones, gravel, etc. are mixed in rainwater, a sedimentation tank (not shown) is provided in the middle of the flow path 12 leading to the inflow port 10 shown in FIG. A large thing was allowed to settle, and the overflowed sedimentation tank was led to the inlet 10 of the water storage section 2.
However, in the case of this method, if a large sedimentation tank is provided, stones, gravel, or finer objects can be precipitated and removed in this sedimentation tank. There is a problem that is difficult. In addition, in order to provide a large sedimentation tank, it is necessary to dig a large hole in the ground, and it is also necessary to form walls around the bottom and concrete, which makes the installation cost extremely expensive There was also.

そのため実際には、充分大きな沈殿槽を設けることができる場合は稀であった。充分大きな容積の沈殿槽を設けることができないと、細かな沈殿物が時間の経過とともに貯水部２の底に堆積し、しかもこの沈殿物を完全には除去できないために次第に貯水部２内の貯水容積が減少し、所望の貯水量を維持できない、という問題が依然として残っていた。   Therefore, in practice, it was rare that a sufficiently large settling tank could be provided. If a sedimentation tank having a sufficiently large volume cannot be provided, fine sediment accumulates at the bottom of the water storage unit 2 over time, and since this sediment cannot be completely removed, the water storage in the water storage unit 2 is gradually increased. The problem remained that the volume was reduced and the desired amount of water could not be maintained.

そこで図５に示すように貯水部２の流入口１０の手前に、この貯水部２と隣り合わせで沈殿槽１５を設ける方法が提案されている。
因みに図５において、図４と同一部分には同じ番号を付し、詳細な説明は省略する。図５で符号１５は沈殿槽を、符号１６は貯水部２内の貯水を散水や防火用水として利用する場合のポンプ装置を示している。 Therefore, as shown in FIG. 5, a method has been proposed in which a sedimentation tank 15 is provided adjacent to the water reservoir 2 in front of the inlet 10 of the water reservoir 2.
In FIG. 5, the same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof is omitted. 5, the code | symbol 15 has shown the sedimentation tank, and the code | symbol 16 has shown the pump apparatus in the case of utilizing the water storage in the water storage part 2 as watering or fire prevention water.

ところでこの方法の場合、沈殿槽１５を貯水部２に隣接して設置しているため、前述したように沈殿槽を独立して貯水部２の流入口１０に到る流路１２の途中に設ける場合に比して工事の手間は少なくて済む利点はある。
しかしながら、この沈殿槽１５の側壁や底壁１３をコンクリートで形成しなければならない点は前述のものと同じで、やはりかなり工事費が高くなるという問題は依然として残る。加えて貯水部２の内張層３を形成している遮水性シートもしくは半透水性シートと沈殿槽１５のコンクリート製の壁１３との間の繋ぎ目をどうするか、という問題がある。繋ぎ目がしっかりしていないと、内張層３や壁１３の外側にある土砂が両者の隙間から貯水部２内に入り込み、これがまた沈殿物を増加させる原因にもなる。 By the way, in the case of this method, since the sedimentation tank 15 is installed adjacent to the water storage part 2, as described above, the precipitation tank is independently provided in the middle of the flow path 12 reaching the inlet 10 of the water storage part 2. Compared to the case, there is an advantage that the construction work can be reduced.
However, the point that the side wall and bottom wall 13 of the settling tank 15 must be formed of concrete is the same as described above, and the problem that the construction cost is still high still remains. In addition, there is a problem of what to do with the joint between the water-impervious sheet or semi-permeable sheet forming the lining layer 3 of the water reservoir 2 and the concrete wall 13 of the settling tank 15. If the joint is not tight, the earth and sand on the outside of the lining layer 3 and the wall 13 will enter the water storage part 2 through the gap between them, which will also cause the sediment to increase.

前述の問題に鑑み本願発明の目的は、沈殿槽を設けるにあたって、特に新たにその設置場所を設ける必要がなく、しかも設置自体も容易で工事費用を大幅に低減できる雨水の貯水施設を提供することにある。   In view of the above-mentioned problems, the object of the present invention is to provide a rainwater storage facility that does not require a new installation place when installing a sedimentation tank, is easy to install, and can greatly reduce construction costs. It is in.

前記目的を達成すべく本願発明の請求項１記載の雨水の貯水施設は、地面を掘り下げて設けられ内表面に遮水性シートもしくは半透水性シートからなる内張層が設けられている上部が開口した貯水部と、該貯水部内に配設され複数の樹脂製骨格ブロックを組み立てて構成されている空間保持骨格と、前記貯水部上部を覆う被覆層とを有する雨水の貯水施設において、該雨水の貯水施設はさらに前記貯水部に雨水の流入口を有していて、かつこの流入口近傍に配設されている樹脂製骨格ブロックを流入口側に囲い込むように樹脂製の仕切壁が設けられて沈澱槽が形成されていることを特徴とするものである。   In order to achieve the above object, the rainwater storage facility according to claim 1 of the present invention is provided by digging down the ground and having an inner surface provided with a lining layer made of a water-impervious sheet or a semi-permeable sheet. In the rainwater storage facility, the rainwater storage facility has a water storage section, a space holding skeleton that is configured by assembling a plurality of resin skeleton blocks disposed in the water storage section, and a covering layer that covers the upper portion of the water storage section. The water storage facility further has a rainwater inflow port in the water storage part, and a resin partition wall is provided so as to surround the resin skeleton block disposed near the inflow port on the inflow side. Thus, a sedimentation tank is formed.

このようにしてなる請求項１記載の雨水の貯水施設によれば、貯水部の内部にあって、かつこの貯水部の流入口近傍に配設されている前記樹脂製骨格ブロックを流入口側に囲い込むように樹脂製の仕切壁で仕切って沈殿槽を設けている。それ故、新たに沈殿槽の設置場所をどこにするか等煩わしい問題は最初から考える必要がない。
また、貯水部の一部を利用して沈殿槽を設置するため、工事費も安く済む。さらには細かい土砂までもこの沈殿槽内に沈殿せしめることができるため、この沈殿槽を除く貯水部内部全体への沈殿物の拡散を防止でき、かつ堆積する沈殿量も大幅に少なくできる。それ故、長期間貯水部内を掃除することなくこの施設を使用することができる。
さらに、仕切壁が樹脂製であるため、従来のようにコンクリート製の壁と違い、重量も軽く、工事も格段に容易になる。それ故、工事費全体を大幅に低減できる。 According to the rainwater storage facility according to claim 1, the resin skeleton block disposed in the vicinity of the inlet of the reservoir and in the vicinity of the inlet of the reservoir is disposed on the inlet side. A sedimentation tank is provided by partitioning with a partition wall made of resin so as to be enclosed. Therefore, it is not necessary to think from the beginning of an annoying problem such as where to place a new settling tank.
In addition, since a settling tank is installed using a part of the water storage part, the construction cost can be reduced. Furthermore, since even fine earth and sand can be precipitated in the settling tank, it is possible to prevent the sediment from spreading to the entire interior of the water storage unit excluding the settling tank, and to greatly reduce the amount of settling. Therefore, this facility can be used without cleaning the water storage section for a long time.
Furthermore, since the partition wall is made of resin, unlike the conventional wall made of concrete, the weight is light and the construction is much easier. Therefore, the overall construction cost can be greatly reduced.

また本願請求項２記載の雨水の貯水施設は、地面を掘り下げて設けられ内表面に遮水性シートもしくは半透水性シートからなる内張層が設けられている上部が開口した貯水部と、該貯水部内に配設され複数の樹脂製骨格ブロックを組み立てて構成されている空間保持骨格と、前記貯水部上部を覆う被覆層とを有する雨水の貯水施設において、該雨水の貯水施設はさらに前記貯水部に雨水の流入口を有していて、かつこの流入口近傍に配設されている樹脂製骨格ブロックを流入口側に囲い込むように樹脂製の仕切壁が設けられて沈澱槽が形成され、かつ前記仕切壁には壁の内外の水位レベルを調整するための複数の流水口が前記壁を貫通して設けられていることを特徴としている。
このようにしてなる請求項２記載の雨水の貯水施設によれば、沈殿槽を仕切っている樹脂製の仕切壁に、この仕切壁の内外の水位レベルを調整するための複数の流水口を、この壁を貫通して設けているので、常時壁で仕切られた沈殿槽内とその外側の貯水部内の水位をほぼ同レベルに保持することができる。
それ故、例えば沈殿槽側の水位が貯水部内の水位より高くなって、樹脂製の仕切壁に大きな水圧が掛かり仕切壁が壊れる、という恐れが少なくなり好ましい。 Further, the rainwater storage facility according to claim 2 of the present application includes a water storage unit that is provided by digging down the ground and has an inner surface provided with a lining layer made of a water-impervious sheet or a semi-permeable sheet. A rainwater storage facility having a space holding skeleton arranged in a section and configured by assembling a plurality of resin skeleton blocks, and a covering layer covering the upper portion of the water storage section, the rainwater storage facility further including the water storage section The resin partition wall is provided so as to enclose the resin skeleton block disposed in the vicinity of the inflow port on the inflow side, and a precipitation tank is formed. The partition wall is provided with a plurality of water outlets for adjusting the water level inside and outside the wall, penetrating the wall.
According to the rainwater storage facility according to claim 2, the plurality of water outlets for adjusting the water level inside and outside the partition wall are provided in the resin partition wall partitioning the settling tank, Since the wall is provided so as to penetrate, the water level in the settling tank always partitioned by the wall and the water storage section outside the wall can be maintained at substantially the same level.
Therefore, for example, the water level on the settling tank side is higher than the water level in the water storage section, and it is preferable that there is less fear that the partition wall made of resin will be damaged due to a large water pressure.

さらにまた本願請求項３記載の雨水の貯水施設は、請求項１または請求項２いずれかに記載の雨水の貯水施設において、前記貯水部上部を覆う被覆層が樹脂製の天板と、該天板を覆う遮水性シートもしくは半透水性シートと、該遮水性シートもしくは半透水性シートを覆う土の層とを有することを特徴とするものである。   Furthermore, a rainwater storage facility according to claim 3 of the present application is the rainwater storage facility according to claim 1 or 2, wherein a covering layer covering the upper portion of the water storage portion is made of a resin top plate, It has a water-impervious sheet or semi-permeable sheet covering the plate, and a soil layer covering the water-impervious sheet or semi-permeable sheet.

以上のように本願発明の雨水の貯水施設によれば、沈殿槽を設けるにあたって、特にその設置場所をどうするか、という問題もなく、しかも設置自体も容易で工事費用を大幅に低減できる雨水の貯水施設を提供することができる。   As described above, according to the rainwater storage facility of the present invention, there is no particular problem of how to install the settling tank, and it is easy to install and can reduce the construction cost significantly. Facilities can be provided.

以下に本願発明の雨水の貯水施設の一実施例を図１〜図３を用いて詳細に説明する。尚、図１において前記図４と同じ部分には同じ番号を付し、その説明は簡単にし、本願発明の特徴を示す点についてのみ詳細に説明することにする。   Hereinafter, an embodiment of a rainwater storage facility according to the present invention will be described in detail with reference to FIGS. In FIG. 1, the same parts as those in FIG. 4 are denoted by the same reference numerals, the description thereof will be simplified, and only the points showing the features of the present invention will be described in detail.

図１は本願発明の雨水の貯水施設の一実施例を示すもので、貯水施設を側面からみた模式図である。また図２は本願発明の雨水の貯水施設の特徴を示す貯水部内に設けた沈殿槽を上からみた一部平面図、図３は貯水部内に構成されている空間保持骨格を形成するために使用している樹脂製骨格ブロックの一例を示す斜視図である。   FIG. 1 shows an embodiment of a rainwater storage facility according to the present invention, and is a schematic view of the storage facility as seen from the side. 2 is a partial plan view of the settling tank provided in the water storage section showing the characteristics of the rainwater storage facility of the present invention, and FIG. 3 is used to form a space holding skeleton constructed in the water storage section. It is a perspective view which shows an example of the resin-made frame | skeleton block which is doing.

図１に示すように、地面１の地下を掘り下げて、例えば長方形あるいは正方形の貯水部２を形成し、しかる後貯水部２内に周辺の土砂が流れ込まないように、貯水部２の内表面（側面及び底面を含む）に遮水性シートもしくは半透水性シートあるいはこれらを組み合わせて多重に内張して内張層３を形成する。   As shown in FIG. 1, an underground surface of the water storage unit 2 is formed by digging the basement of the ground 1 to form, for example, a rectangular or square water storage unit 2, and then preventing surrounding earth and sand from flowing into the water storage unit 2. The lining layer 3 is formed by lining the water-impervious sheet, the semi-permeable sheet, or a combination thereof in multiple layers.

さて内張層３を形成したら、貯水部２内に図３に示すような樹脂製骨格ブロック４を上下縦横に組み上げて、その内部に図１に示すように貯水空間を有する空間保持骨格を形成する。図１に示すように図３に示す樹脂製骨格ブロック４を積み上げる場合、一段毎に樹脂製骨格ブロック４の上下を逆さまにして、組み上げていく。
例えば図３に示すように、樹脂製骨格ブロック４の円筒部分の先端には突起１４と嵌合穴２４とが設けられており、この樹脂製骨格ブロック４上に別の樹脂製骨格ブロック４を積み上げる場合には、逆さにした別の樹脂製骨格ブロック４の円筒部分に設けられた突起１４と嵌合穴２４とを、一方の樹脂製骨格ブロック４の突起１４を他方の樹脂製骨格ブロック４の嵌合穴２４に嵌め、一方の樹脂製骨格ブロック４の嵌合穴２４に他方に樹脂製骨格ブロック４の突起１４を嵌めればよい。 When the lining layer 3 is formed, the resin skeleton block 4 as shown in FIG. 3 is assembled vertically and horizontally in the water reservoir 2 to form a space holding skeleton having a water storage space as shown in FIG. To do. As shown in FIG. 1, when the resin skeleton blocks 4 shown in FIG. 3 are stacked, the resin skeleton blocks 4 are assembled upside down for each stage.
For example, as shown in FIG. 3, a protrusion 14 and a fitting hole 24 are provided at the tip of the cylindrical portion of the resin skeleton block 4, and another resin skeleton block 4 is placed on the resin skeleton block 4. In the case of stacking, the protrusion 14 and the fitting hole 24 provided on the cylindrical portion of another resin skeleton block 4 inverted, and the protrusion 14 of one resin skeleton block 4 are connected to the other resin skeleton block 4. And the projection 14 of the resin skeleton block 4 may be fitted to the other fitting hole 24 of one resin skeleton block 4.

一方、樹脂製骨格ブロック４の平板部分には透過孔が多数設けられているので、この平板部分同士で２つの樹脂製骨格ブロック４同士を接続する場合には、前記透過孔に適切な把持具を用いる等して接続すればよい。
尚、樹脂製骨格ブロック４の形状は前述したようにこれ以外にも種々提案されており、本願発明においても、図３に示す樹脂製骨格ブロック４に限らず種々の樹脂製骨格ブロック４を利用できることはいうまでもない。 On the other hand, since a large number of transmission holes are provided in the flat plate portion of the resin skeleton block 4, when the two resin skeleton blocks 4 are connected to each other by the flat plate portions, a gripping tool suitable for the transmission hole is used. The connection may be made using, for example.
Various shapes of the resin skeleton block 4 have been proposed as described above, and in the present invention, not only the resin skeleton block 4 shown in FIG. 3 but also various resin skeleton blocks 4 are used. Needless to say, it can be done.

ところで順次樹脂製骨格ブロック４を組み付けて貯水部２内に空間保持骨格を作り上げていき、図２に示すように貯水部２への流入口１０の近傍に近づいたら、例えば縦横２個分の樹脂製骨格ブロック４については、その一角が１／４円状切り欠かれた他とは別の形状の樹脂製骨格ブロック４を、中央に沈殿物回収用の作業孔５０が形成されるように組み、かつ図２に示すように樹脂製の仕切壁３０を３方向に配置して貯水部２の一部を囲い込んで流入口１０側に沈澱槽４０を形成する。尚、この仕切壁３０の下端は貯水部２の底面に接している。   By the way, the resin skeleton block 4 is sequentially assembled to form a space holding skeleton in the water storage unit 2, and when approaching the vicinity of the inlet 10 to the water storage unit 2 as shown in FIG. As for the skeleton block 4, a resin skeleton block 4 having a shape different from the other of which one corner is cut out in a quarter circle is assembled so that a work hole 50 for collecting sediment is formed in the center. And as shown in FIG. 2, the partition wall 30 made from resin is arrange | positioned to 3 directions, a part of the water storage part 2 is enclosed, and the sedimentation tank 40 is formed in the inflow port 10 side. The lower end of the partition wall 30 is in contact with the bottom surface of the water storage unit 2.

またこの樹脂製の仕切壁３０には、その高さ方向中央付近にこの仕切壁３０を貫通して沈殿槽４０と貯水部２側とを繋ぐ半径約１０ｍｍ程度の図示しない流水口が複数個穿たれていて、沈澱槽４０側の水位と、貯水部２側の水位が常時ほぼ同じ高さになるようにしている。
このように仕切壁３０に流水口を設けたことにより、沈澱槽４０側と貯水部２側の水位が常時ほぼ同じになるように調整されるため、仕切壁３０に、沈澱槽４０側と貯水部２側の水位が極端に違ったことにより生ずる水圧差による力が負荷する恐れがなくなる。
それ故、仕切壁３０を樹脂で形成しても長期間の使用に十分耐えることができる。 The resin partition wall 30 has a plurality of water outlets (not shown) having a radius of about 10 mm that penetrate the partition wall 30 and connect the settling tank 40 and the water storage unit 2 side in the vicinity of the center in the height direction. The water level on the settling tank 40 side and the water level on the water storage unit 2 side are always set to be substantially the same height.
Since the water flow outlet is provided in the partition wall 30 in this manner, the water levels on the settling tank 40 side and the water storage section 2 side are always adjusted to be substantially the same. There is no risk of a force due to a water pressure difference caused by an extremely different water level on the part 2 side.
Therefore, even if the partition wall 30 is made of resin, it can sufficiently withstand long-term use.

尚、図１において、符号１６は必要に応じて設けたポンプ装置で、これを設けておけば水不足の際、花壇等に散水でき好ましい。もちろん単にこの雨水の貯水施設を貯水用に使用するだけであればポンプ装置１６を設ける必要はない場合もあり得る。
また符号６０は貯水部２の流入口１０に繋がっている流路１２の途中に設けた小型の沈澱槽で、この沈澱槽６０で石や砂利等比較的大きなものを沈澱させ、取り除く。それ故、もし前記流路１２が、単に集合住宅の屋上からの雨水のみ集めて運んでくるものであれば、その中に石や砂利が混入する可能性は小さいので、あえてこの沈澱槽６０を設ける必要はない。 In FIG. 1, reference numeral 16 denotes a pump device provided as necessary. If this is provided, it is preferable that water can be sprayed onto a flower bed or the like when water is insufficient. Of course, if the rainwater storage facility is simply used for storing water, it may not be necessary to provide the pump device 16.
Reference numeral 60 denotes a small sedimentation tank provided in the middle of the flow path 12 connected to the inlet 10 of the water storage section 2. In this sedimentation tank 60, relatively large items such as stones and gravel are settled and removed. Therefore, if the flow path 12 simply collects and carries rainwater from the roof of the apartment house, there is little possibility that stones and gravel will be mixed in it. There is no need to provide it.

また符号６１はマンホールの蓋を示す、適時この蓋６１を開けることで貯水部２、沈澱槽４０及び沈澱槽６０の内部の様子を観察できる。
また符号９は被覆層を示しており、この被覆層９は従来と同様に、例えば貯水部２上に、より具体的には樹脂製骨格ブロック４で構成した空間保持骨格上に敷き詰めた樹脂製の天板や、この天板を覆う遮水性シートもしくは半透水性シート３や、さらにこの遮水性シートもしくは半透水性シート３上に埋め戻した土等から形成されている。 Reference numeral 61 denotes a manhole cover. When the cover 61 is opened at appropriate times, it is possible to observe the inside of the water storage unit 2, the settling tank 40 and the settling tank 60.
Reference numeral 9 denotes a covering layer, and the covering layer 9 is made of a resin laid on, for example, the water storage portion 2, more specifically on a space holding skeleton composed of the resin skeleton block 4, as in the past. The top plate, the water-impervious sheet or semi-permeable sheet 3 covering the top plate, and the soil buried back on the water-impervious sheet or semi-permeable sheet 3 are formed.

以上のようにしてなる本願発明の雨水の貯水施設によれば、貯水部２の内部の流入口１０の近傍を利用して沈澱槽４０を形成しているので、沈澱槽の設置場所を新たに確保する必要がない。また貯水部２内の一部を利用し、しかも単に仕切壁３０で３方を仕切るだけで沈澱槽４０を形成しているので、工事費も極めて安い。加えて仕切壁３０として樹脂製の仕切壁３０を採用しているので、より一層工事費の低減を図ることもできる。   According to the rainwater storage facility of the present invention constructed as described above, the sedimentation tank 40 is formed by utilizing the vicinity of the inlet 10 inside the water storage unit 2, so that the installation location of the sedimentation tank is newly established. There is no need to secure. Further, since the sedimentation tank 40 is formed by using a part of the water storage unit 2 and simply partitioning the three sides with the partition wall 30, the construction cost is extremely low. In addition, since the resin partition wall 30 is adopted as the partition wall 30, the construction cost can be further reduced.

また本願発明の雨水の貯水施設によれば、遮水性シートもしくは半透水性シートで形成した内張層３でその内表面を覆った貯水部２内に沈殿槽を設けているので、図５に示す従来の貯水施設の問題点であった貯水部２の内張層３を形成している遮水性シートもしくは半透水性シートと沈殿槽１５のコンクリート製の壁１３との間の繋ぎ目をどうするか、という問題がそもそも存在しなくなる。それ故、内張層３や壁１３の外側にある土砂が両者の隙間から貯水部２内に入り込む、という恐れもない。   Moreover, according to the rainwater storage facility of the present invention, since the settling tank is provided in the water storage part 2 covering the inner surface with the lining layer 3 formed of a water-impervious sheet or a semi-permeable sheet, FIG. What is the connection between the water-impervious sheet or semi-permeable sheet forming the lining layer 3 of the water storage section 2 and the concrete wall 13 of the settling tank 15, which was a problem of the conventional water storage facility shown In the first place, there is no problem. Therefore, there is no fear that the earth and sand outside the lining layer 3 and the wall 13 will enter the water reservoir 2 through the gap between the two.

本願発明の雨水の貯水施設の一実施例を側面からみた模式図である。It is the schematic diagram which looked at one Example of the rain water storage facility of this invention from the side. 図１に示す雨水の貯水施設の流入口近傍の一部拡大平面図である。FIG. 2 is a partially enlarged plan view in the vicinity of an inlet of the rainwater storage facility shown in FIG. 1. 本願発明の雨水の貯水施設に使用する樹脂製骨格ブロックの一例を示す斜視図である。It is a perspective view which shows an example of the resin-made frame | skeleton blocks used for the rainwater storage facility of this invention. 従来の雨水の貯水施設を側面からみた模式図である。It is the schematic diagram which looked at the conventional rain water storage facility from the side. 従来の雨水の貯水施設の他の例を側面からみた模式図である。It is the schematic diagram which looked at the other example of the conventional rainwater storage facility from the side.

符号の説明Explanation of symbols

１ 地面
２ 貯水部
３ 内張層
４ 樹脂製骨格ブロック
９ 被覆層
１０ 流入口
１１ 流出口
１５ 沈殿槽
１６ ポンプ装置
３０ 仕切壁
４０ 沈澱槽
５０ 作業孔 DESCRIPTION OF SYMBOLS 1 Ground 2 Water storage part 3 Lining layer 4 Resin frame | skeleton block 9 Coating layer 10 Inlet 11 Outlet 15 Sedimentation tank 16 Pumping device 30 Partition wall 40 Sedimentation tank 50 Working hole

Claims (3)

地面を掘り下げて設けられ内表面に遮水性シートもしくは半透水性シートからなる内張層が設けられている上部が開口した貯水部と、該貯水部内に配設され複数の樹脂製骨格ブロックを組み立てて構成されている空間保持骨格と、前記貯水部上部を覆う被覆層とを有する雨水の貯水施設において、該雨水の貯水施設はさらに前記貯水部に雨水の流入口を有していて、かつこの流入口近傍に配設されている樹脂製骨格ブロックを流入口側に囲い込むように樹脂製の仕切壁が設けられて沈澱槽が形成されていることを特徴とする雨水の貯水施設。   Assemble a water storage part with an open top with a lining layer made of a water-impervious sheet or semi-permeable sheet on the inner surface provided by digging down the ground, and a plurality of resin skeleton blocks arranged in the water storage part In the rainwater storage facility having a space holding skeleton configured as described above and a covering layer covering the upper portion of the water storage unit, the rainwater storage facility further includes a rainwater inlet in the water storage unit, and A rainwater storage facility, characterized in that a resin partition wall is provided so as to enclose a resin skeleton block disposed in the vicinity of the inflow port on the inflow side and a sedimentation tank is formed. 地面を掘り下げて設けられ内表面に遮水性シートもしくは半透水性シートからなる内張層が設けられている上部が開口した貯水部と、該貯水部内に配設され複数の樹脂製骨格ブロックを組み立てて構成されている空間保持骨格と、前記貯水部上部を覆う被覆層とを有する雨水の貯水施設において、該雨水の貯水施設はさらに前記貯水部に雨水の流入口を有していて、かつこの流入口近傍に配設されている樹脂製骨格ブロックを流入口側に囲い込むように樹脂製の仕切壁が設けられて沈澱槽が形成され、かつ前記仕切壁には壁の内外の水位レベルを調整するための複数の流水口が前記壁を貫通して設けられていることを特徴とする雨水の貯水施設。   Assemble a water storage part with an open top with a lining layer made of a water-impervious sheet or semi-permeable sheet on the inner surface provided by digging down the ground, and a plurality of resin skeleton blocks arranged in the water storage part In the rainwater storage facility having a space holding skeleton configured as described above and a covering layer covering the upper portion of the water storage unit, the rainwater storage facility further includes a rainwater inlet in the water storage unit, and A resin partition wall is provided so as to enclose the resin skeleton block disposed in the vicinity of the inflow port on the inflow port side to form a sedimentation tank, and the partition wall has a water level inside and outside the wall. A rainwater storage facility, wherein a plurality of water outlets for adjustment are provided through the wall. 前記貯水部上部を覆う被覆層が樹脂製の天板と、該天板を覆う遮水性シートもしくは半透水性シートと、該遮水性シートもしくは半透水性シートを覆う土の層とを有することを特徴とする請求項１または請求項２いずれかに記載の雨水の貯水施設。   The coating layer covering the upper part of the water storage section has a resin top plate, a water-impervious sheet or semi-permeable sheet covering the top plate, and a soil layer covering the water-impervious sheet or semi-permeable sheet. The rainwater storage facility according to claim 1, wherein the rainwater storage facility is provided.
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CN108133108B (en) * 2017-12-23 2021-10-22 北京地矿工程建设有限责任公司 Method for predicting influence of confined water precipitation on building settlement
JP6974887B1 (en) * 2021-01-14 2021-12-01 城東リプロン株式会社 Method for manufacturing skeletal block structure, insertion block body, and method for manufacturing skeletal block structure
JP2022109013A (en) * 2021-01-14 2022-07-27 城東リプロン株式会社 Skeleton block structure, method of manufacturing insert block body, and method of manufacturing skeleton block structure

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