JP2008127870A - Rainwater storage device - Google Patents

Rainwater storage device Download PDF

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JP2008127870A
JP2008127870A JP2006314480A JP2006314480A JP2008127870A JP 2008127870 A JP2008127870 A JP 2008127870A JP 2006314480 A JP2006314480 A JP 2006314480A JP 2006314480 A JP2006314480 A JP 2006314480A JP 2008127870 A JP2008127870 A JP 2008127870A
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rainwater
cylindrical water
water tank
ground
cylindrical
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Munetaka Ozeki
宗孝 大関
Masanori Wakabayashi
正憲 若林
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Ishikawajima Kenzai Kogyo Co Ltd
Ishikawajima Construction Materials Co Ltd
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Ishikawajima Kenzai Kogyo Co Ltd
Ishikawajima Construction Materials 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 a rainwater storage device which is simple in structure, low in cost, and capable of obtaining a large water storage quantity. <P>SOLUTION: According to the structure of the rainwater storage device 1, a plurality of cylindrical water storage tanks 2 each formed by vertically connecting a plurality of cement rings 4 to each other, and vertically embedded in the ground, are arranged at predetermined horizontal intervals, and lower portions of the tanks adjacent to each other are connected together by a communication pipe 10. Further at least one of the cylindrical water storage tanks 2 has a rainwater intake pipe 12 arranged on an upper portion thereof, so as to communicate with a rainwater collecting gutter on the ground, and at least one of the cylindrical water storage tanks 2 has a drain pipe connected thereto, for discharging rainwater therein to the outside. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、都市部において住宅等の雨樋から流れ出た雨水や道路の側溝等に集められた雨水を流入させて貯留する雨水貯留装置に関するものである。   The present invention relates to a rainwater storage device that stores rainwater flowing from rain gutters such as houses in a city area or rainwater collected in a gutter of a road or the like.

従来、都市部において、公園、運動場等の地下に埋設されて、豪雨等によって地上に溢れ出た雨水を流入させて一時的に貯留して洪水を防止したり、貯留した雨水を防火用に利用するための地下式貯水槽として、正方形の角部を適数箇所切り欠いてなる５角形、６角形、８角形の角筒状に形成したコンクリート製の貯水ブロックを水平方向の縦横に多数配列し、垂直方向に多段に積み重ねると共に、隣接する貯水ブロックどうしの内部空間を、それらの当接面に設けた開口部によって連通させて、各貯水ブロックの内部空間と貯水ブロックどうしで囲まれた空間とを貯水空間とした貯水槽を、適宜広場に掘削形成した凹陥部の基礎底板上に設置して構成されたものが知られている（例えば、特許文献１参照）。
特開２００４−１９４２６号公報 Conventionally, in urban areas, it is buried underground in parks, playgrounds, etc., and rainwater that overflows on the ground due to heavy rain flows in and temporarily stores it to prevent flooding, or the stored rainwater is used for fire prevention As an underground water storage tank, a large number of concrete water storage blocks formed in a square, hexagonal, and octagonal square shape with square corners cut out at appropriate locations are arranged horizontally and vertically. In addition to stacking vertically in multiple stages, the internal spaces of adjacent water storage blocks are communicated with each other by an opening provided in the contact surface thereof, and the space surrounded by the internal space of each water storage block and the water storage blocks There is known a structure in which a water storage tank having a water storage space is installed on a foundation bottom plate of a recessed portion that is appropriately excavated and formed in a plaza (for example, see Patent Document 1).
JP 2004-19426 A

しかしながら、前記地下貯水槽は、これを構成する多角筒状の貯水ブロックが構造が複雑であり、形状の異なるものを複数製造しなければならないので、貯水ブロックの製造コストが高くなると共に、多数の貯水ブロックを水平方向、垂直方向に突き合わせながら立体的に組み立てる必要があるので、組み立てに多くの工数が掛かり、地下貯水槽の設置に長時間を要する問題がある。また、個々の貯水ブロックの大きさには限度があり、これで組み立てられた地下貯水槽の貯水容量も小さくならざるを得ず、貯水容量を大きくするには、膨大な数の貯水ブロックが必要となり、その場合には、地下貯水槽の設置時間が一層長くなると共に設置コストが嵩む問題がある。   However, in the underground water storage tank, the polygonal cylindrical water storage block constituting this has a complicated structure, and a plurality of different shapes must be manufactured. Since it is necessary to assemble the water storage block three-dimensionally in the horizontal and vertical directions, it takes a lot of man-hours to assemble, and there is a problem that it takes a long time to install the underground water storage tank. In addition, there is a limit to the size of each individual water storage block, and the water storage capacity of the underground water tank constructed in this way must be reduced. To increase the water storage capacity, a huge number of water storage blocks are required. In this case, there is a problem that the installation time of the underground water storage tank becomes longer and the installation cost increases.

本発明は、上記事情に鑑みてなされたものであって、構造が簡単、安価に設置することができ、大きな貯水容量を得ることができる雨水貯留装置を提供することを目的とする。   This invention is made | formed in view of the said situation, Comprising: It aims at providing the rain water storage apparatus which can be installed in simple and cheap, and can obtain a big water storage capacity.

上記目的を達成するために、本発明に係る雨水貯留装置は、複数のセグメントリングを上下に接続して地中に鉛直状に埋設してなる複数の円筒状貯水槽が、水平方向に所定間隔をあけて配置されると共に、それらの隣接するものどうしの下部が連絡管によって互いに連通され、また、少なくとも１つの円筒状水槽の上部には地上の雨水集合溝に連絡された雨水取入管が設けられ、さらに、少なくとも１つの円筒状貯水槽には内部の雨水を外部へ排出する排水管が設けられていることを特徴とする。   In order to achieve the above object, a rainwater storage device according to the present invention includes a plurality of cylindrical water tanks that are vertically embedded in the ground by connecting a plurality of segment rings up and down at predetermined intervals in the horizontal direction. The lower part of the adjacent ones are communicated with each other by a connecting pipe, and a storm water intake pipe connected to a storm water collecting groove on the ground is provided at the upper part of at least one cylindrical water tank. Furthermore, the at least one cylindrical water tank is provided with a drain pipe for discharging rain water inside to the outside.

本発明に係る雨水貯留装置においては、降雨時に道路の側溝等の雨水集合溝に流れ込んだ雨水が雨水取入管を通って少なくとも１つの円筒状水槽内に流入して一定の水位に達すると、その雨水は連絡管を通って順次他の円筒状貯水槽に流入して、全ての円筒状貯水槽内において雨水が一時的に貯留され、これにより、地上に雨水が溢れ出て洪水が起こるのが防止される。晴天時等において排水管が設けられた円筒状貯水槽内から雨水が前記排水管を通して外部へ徐々に排出され、次の降雨時に備えられる。   In the rainwater storage device according to the present invention, when rainwater that has flowed into a rainwater collecting groove such as a side ditch of a road at the time of raining flows into at least one cylindrical aquarium through a rainwater intake pipe and reaches a certain water level, Rainwater flows into the other cylindrical water storage tanks sequentially through the connecting pipe, and rainwater is temporarily stored in all the cylindrical water storage tanks, so that rainwater overflows on the ground and flooding occurs. Is prevented. When the weather is fine, rainwater is gradually discharged from the cylindrical water tank provided with the drain pipe to the outside through the drain pipe, and is prepared for the next rain.

前記雨水貯留装置において、前記円筒状貯水槽が縦型シールド工法により地中に埋設される構成とすると、円筒状貯水槽の地中への設置作業を円滑に、かつ能率良く行うことができる。   In the rainwater storage device, when the cylindrical water tank is embedded in the ground by a vertical shield method, the installation work of the cylindrical water tank in the ground can be performed smoothly and efficiently.

前記雨水貯留装置において、前記円筒状貯水槽の少なくとも１つは、槽内が所定の高さ位置に設けた隔壁で上下に区画されており、上側に区画された用水槽部の頂版には、地上に開口し得る取水用筒が設けられた構成とすることができる。
このようにすると、前記円筒状貯水槽の用水槽部を防火水槽等として使用し、用水槽部内に貯留された雨水を前記取水用筒を通して汲み上げて、消火用、散水用等に有効利用することができる。 In the rainwater storage device, at least one of the cylindrical water storage tanks is partitioned vertically by a partition wall provided at a predetermined height, and the top plate of the water tank section partitioned on the upper side Further, it is possible to adopt a configuration in which a water intake cylinder that can be opened to the ground is provided.
In this case, the water tank part of the cylindrical water tank is used as a fire prevention water tank or the like, and the rainwater stored in the water tank part is pumped up through the water intake cylinder and used effectively for fire extinguishing, watering, etc. Can do.

本発明によれば、各円筒状貯水槽が、円弧版状のセグメントを接合して形成したセグメントリングを上下に複数段に接続して縦坑工法によって地中に鉛直状に埋設することができるので、各円筒状貯水槽を構成するセグメントとして標準の単純な円弧版状のセグメントを使用することができ、その構成が簡単であって安価に調達することができる。これにより、セグメントによるセグメントリングの組み立ても容易に行うことができ、各円筒状貯水槽の所定場所への設置を容易に、かつ安価に行うことができる。また、セグメントリングの積み重ね段数の選択によって各円筒状貯水槽の深さを変え、各円筒状貯水槽の水平方向の設置数を選択することによって、雨水貯留装置の貯水容量の規模を設置場所の状況に応じて容易に調節、拡大することができる。   According to the present invention, each cylindrical water tank can be embedded vertically in the ground by a vertical shaft method by connecting segment rings formed by joining arc-shaped segments in multiple stages up and down. Therefore, a standard simple arc-shaped segment can be used as a segment constituting each cylindrical water storage tank, and its configuration is simple and can be procured at low cost. Thereby, the assembly of the segment ring by a segment can also be performed easily and the installation to the predetermined place of each cylindrical water tank can be performed easily and cheaply. In addition, by changing the depth of each cylindrical water tank by selecting the number of stacking stages of segment rings, and selecting the number of horizontal installations of each cylindrical water tank, the scale of the storage capacity of the rainwater storage device is It can be easily adjusted and expanded according to the situation.

次に、本発明の一実施の形態に係る雨水貯留装置について添付図面を参照して説明する。図１において、１は都市部の公園、運動場等の公共施設の地下に埋設された雨水貯留装置である。この雨水貯留装置１は、水平方向において縦横に所定間隔をあけて配列された複数個の円筒状貯水槽２を備えている。各円筒状貯水槽２は、円弧版状の鉄筋コンクリートセグメント（以下、単に「セグメント」という）３を、その円弧方向に複数個接合して環状に形成してなるセグメントリング４が、上下方向（鉛直方向）に複数段積み重ねて接合されて円筒状に構成されている。   Next, a rainwater storage device according to an embodiment of the present invention will be described with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a rainwater storage device buried in a public facility such as an urban park or playground. The rainwater storage device 1 includes a plurality of cylindrical water storage tanks 2 arranged at predetermined intervals in the vertical and horizontal directions in the horizontal direction. Each cylindrical water tank 2 has a segment ring 4 formed by joining a plurality of arc-shaped reinforced concrete segments (hereinafter simply referred to as “segments”) 3 in the arc direction to form an annular shape (vertical direction) Direction) and stacked and joined in a cylindrical shape.

そして、前記各円筒状貯水槽２は、図２に示すように、従来の地下貯水槽と同様に、最下部のセグメントリング４の下端に底版５が施工され、最上部のセグメントリング４の上端に頂版６が施工されている。また、前記頂版６の上面には、地表部７に開閉蓋８を有するマンホール９が、円筒状貯水槽２内に頂版６に設けた穴６ａを介して連通して取り付けられている。また、前記各円筒状貯水槽２は、それらの隣接するものどうしの下部が連絡管１０によって互いに連通され、少なくとも１つの円筒状貯水槽２の頂版６には、道路の側溝等の地上の雨水集合溝１１に連絡された雨水取入管１２が設けられている。
さらに、図示しないが、少なくとも１つの円筒状貯水槽２には、排水ポンプを有する排水管が、下部を槽内底部付近に開口させ、上部を排水溝等に開口させて設備され、前記排水ポンプを作動させることにより、円筒状貯水槽２の内部から雨水を外部へ排出して円筒状水槽２内の水位を一定に維持するようになっている。 As shown in FIG. 2, each cylindrical water tank 2 has a bottom plate 5 constructed at the lower end of the lowermost segment ring 4 and the upper end of the uppermost segment ring 4 as in the conventional underground water tank. The top plate 6 is constructed. On the top surface of the top plate 6, a manhole 9 having an open / close lid 8 on the ground surface portion 7 is attached in the cylindrical water tank 2 through a hole 6 a provided in the top plate 6. In addition, the cylindrical water tanks 2 are connected to each other at the lower part of their adjacent ones by a connecting pipe 10, and the top plate 6 of at least one cylindrical water tank 2 is connected to the ground such as a side gutter of a road. A rainwater intake pipe 12 communicated with the rainwater collecting groove 11 is provided.
Further, although not shown, the at least one cylindrical water storage tank 2 is provided with a drain pipe having a drain pump with a lower part opened near the bottom of the tank and an upper part opened in a drain groove or the like. Is operated so that rainwater is discharged from the inside of the cylindrical water tank 2 to the outside and the water level in the cylindrical water tank 2 is kept constant.

前記円筒状貯水槽２を地下に埋設する場合には、例えば、特開平６−３１３３９５号公報によって知られているように、円筒状貯水槽２を設置しようとする地盤中に鉛直に打設した反力受杭を取り囲むように縦型シールド機を配置し、該縦型シールド機の上で円弧版状のセグメント３を接合してセグメントリング４を組み立て、前記反力受杭に沿って縦型シールド機を推進させてカッターで地盤を掘り下げながら、下段のセグメントリング４の上に順に次段のセグメントリング４を継ぎ足す作業を繰り返し、所定段数のセグメントリング４が地盤中に設置されたときに、前記反力杭を抜いて、最下段のセグメントリング４の下に底版５を施工する。   When the cylindrical water tank 2 is buried underground, for example, as known from Japanese Patent Laid-Open No. 6-313395, the cylindrical water tank 2 is placed vertically in the ground where the cylindrical water tank 2 is to be installed. A vertical shield machine is arranged so as to surround the reaction force receiving pile, and a segment ring 4 is assembled by joining the arc-shaped segment 3 on the vertical shield machine, and a vertical type is formed along the reaction force receiving pile. When the shield machine is driven and the ground is dug with a cutter, the work of adding the next segment ring 4 to the lower segment ring 4 in order is repeated, and when a predetermined number of segment rings 4 are installed in the ground The reaction force pile is pulled out and a bottom plate 5 is constructed under the lowermost segment ring 4.

そして、少なくとも隣接の一対の円筒状貯水槽２のセグメントリング４の設置とそれらの底版５の施工が終了したならば、それらのうちの一方の底版５上に横型掘進機を設置して、一方の円筒状貯水槽２側から他方の円筒状貯水槽２側に向けて前記連絡管１０を挿通させる横穴１３を掘削する。この場合、各円筒状貯水槽２の最下段のセグメントリング４の横穴１３をあける所定位置には、予め前記連絡管１０を挿入する穴４ａが設けられている。前記横穴１３が掘削された後に、該横穴１３に鋼管もしくはコンクリート管からなる前記連絡管１０を挿入して、隣接する円筒状貯水槽２どうしの下部を連通させる。前記連絡管１０と各円筒状貯水槽２との接続部は適宜シール部材１４によって水封する。   And when installation of the segment ring 4 of at least a pair of adjacent cylindrical water storage tanks 2 and construction of those bottom slabs 5 are completed, a horizontal type excavator is installed on one bottom slab 5 of them, A horizontal hole 13 through which the connecting pipe 10 is inserted is excavated from the cylindrical water storage tank 2 side toward the other cylindrical water storage tank 2 side. In this case, a hole 4a into which the connecting tube 10 is inserted is provided in a predetermined position where the horizontal hole 13 of the lowermost segment ring 4 of each cylindrical water tank 2 is opened. After the horizontal hole 13 is excavated, the connecting pipe 10 made of a steel pipe or a concrete pipe is inserted into the horizontal hole 13 so that the lower portions of the adjacent cylindrical water tanks 2 communicate with each other. The connecting portion between the connecting pipe 10 and each cylindrical water storage tank 2 is sealed with a sealing member 14 as appropriate.

隣接する円筒状貯水槽２の下部どうしの連絡管１０により連通させる作業を順次行い、該作業が終了した円筒状貯水槽２から、最上部のセグメントリング４の上端に前記頂版６とマンホール９を施工する。また、所定の円筒状貯水槽２の頂版６に前記雨水取入管１２を施工して前記雨水集合溝１１に連絡させる。そして、前記雨水取入管１２を設けた円筒状貯水槽２から離れた所定の円筒状貯水槽２に前記排水管の設備を施工する。これらの施工作業が終了した後に、円筒状貯水槽２の周囲に掘削土を埋め戻して雨水貯留装置１の地中への設置を完了する。   The work of communicating with the connecting pipe 10 between the lower parts of the adjacent cylindrical water tanks 2 is sequentially performed, and the top plate 6 and the manhole 9 are connected to the upper end of the uppermost segment ring 4 from the cylindrical water tank 2 after the work is completed. Install. In addition, the rainwater intake pipe 12 is constructed on the top plate 6 of a predetermined cylindrical water storage tank 2 to communicate with the rainwater collecting groove 11. And the installation of the said drain pipe is constructed in the predetermined cylindrical water tank 2 away from the cylindrical water tank 2 which provided the said rain water intake pipe 12. As shown in FIG. After these construction work is completed, the excavated soil is backfilled around the cylindrical water tank 2 to complete the installation of the rainwater storage device 1 in the ground.

前記構成の雨水貯留装置１においては、都市部での降雨時に地中に浸透されずに地上に溢れ出た雨水が雨水集合溝１１に流れ込むと、該雨水集合溝１１から前記雨水取入管１２を通して該雨水取入管１２を有する特定の円筒状貯水槽２内に流入してその内部に貯留される。特定の円筒状貯水槽２内の水位が上昇すると、前記連絡管１０を通して隣接の円筒状貯水槽２に雨水が流入してその内部に貯留され、このような雨水の流動により順次、隣接の円筒状貯水槽２内に雨水が流入していき、全ての円筒状貯水槽２内に雨水がほぼ均等に貯留されることとなる。この円筒状貯水槽２による雨水の地中での一時的な貯留により、地上に溢れ出た雨水による洪水が効果的に防止される。
なお、降雨が終わって洪水の心配が無くなったときには、排水管を設備した円筒状貯水槽２からその内部に貯留された雨水を、排水ポンプを作動させて排水管を通して徐々に外部へ排出することにより、全ての円筒状貯水槽２内の雨水の水位を一定以下に下げて、次の降雨時に備える。 In the rainwater storage device 1 having the above-described configuration, when rainwater that has overflowed to the ground without being penetrated into the ground during rainfall in an urban area flows into the rainwater collecting groove 11, the rainwater collecting groove 11 passes through the rainwater intake pipe 12. It flows into a specific cylindrical water tank 2 having the rainwater intake pipe 12 and is stored therein. When the water level in a specific cylindrical water tank 2 rises, rainwater flows into the adjacent cylindrical water tank 2 through the connecting pipe 10 and is stored in the adjacent cylindrical water tank 2. Rainwater flows into the cylindrical water tank 2, and rainwater is almost uniformly stored in all the cylindrical water tanks 2. By temporarily storing rainwater in the ground by the cylindrical water tank 2, flooding due to rainwater overflowing on the ground is effectively prevented.
When there is no longer a worry about flooding after the rain has ended, rainwater stored in the cylindrical water tank 2 equipped with a drain pipe is gradually discharged to the outside through the drain pipe by operating the drain pump. Thus, the rainwater level in all the cylindrical water tanks 2 is lowered below a certain level to prepare for the next rain.

以上説明したように、前記実施の形態に係る雨水貯留装置１は、複数のセグメントリング４を上下に接続して地中に鉛直状に埋設してなる複数の円筒状貯水槽２が、水平方向に所定間隔をあけて配置されると共に、それらの隣接するものどうしの下部が連絡管１０によって互いに連通され、また、少なくとも１つの円筒状貯水槽２の上部には地上の雨水集合溝１１に連絡された雨水取入管１２が設けられ、さらに、少なくとも１つの円筒状貯水槽２には、内部の雨水を外部へ排出する排水管が設けられた構成とされている。   As described above, in the rainwater storage device 1 according to the embodiment, the plurality of cylindrical water tanks 2 formed by connecting the plurality of segment rings 4 in the vertical direction and vertically burying in the ground are in the horizontal direction. Are arranged at predetermined intervals, and the lower portions of the adjacent ones are communicated with each other by a connecting pipe 10, and the upper portion of at least one cylindrical water tank 2 communicates with a rainwater collecting groove 11 on the ground. The rainwater intake pipe 12 is provided, and further, the at least one cylindrical water tank 2 is provided with a drain pipe for discharging the internal rainwater to the outside.

したがって、前記実施の形態に係る雨水貯留装置１によれば、各円筒状貯水槽２が、円弧版状のセグメント３を接合して形成したセグメントリング４を上下に複数段に接続して、縦坑工法によって地中に鉛直状に埋設することができるので、各円筒状貯水槽２を構成するセグメント４として標準の単純な円弧版状のセグメントを使用することができて、その構成が簡単であって安価に調達することができ、セグメント３によるセグメントリング４の組み立ても容易に行える。これにより、各円筒状貯水槽２の所定場所への設置を容易に、かつ安価に行うことができる。また、セグメントリング４の積み重ね段数の選択によって各円筒状貯水槽２の深さを変え、各円筒状貯水槽２の水平方向の設置数を選択することによって、雨水貯留装置１の貯水容量の規模を設置場所の状況に応じて容易に調節、拡大することができる。   Therefore, according to the rainwater storage device 1 according to the above-described embodiment, each cylindrical water tank 2 connects the segment rings 4 formed by joining the arc-shaped segment 3 vertically in a plurality of stages, and vertically Since it can be buried vertically in the ground by the mining method, a standard simple arc-shaped segment can be used as the segment 4 constituting each cylindrical water tank 2, and its configuration is simple. Therefore, it can be procured at low cost, and the assembly of the segment ring 4 by the segment 3 can be easily performed. Thereby, installation to the predetermined place of each cylindrical water tank 2 can be performed easily and cheaply. Moreover, the scale of the water storage capacity of the rainwater storage device 1 is selected by changing the depth of each cylindrical water tank 2 by selecting the number of stacked stages of the segment rings 4 and selecting the number of horizontal installations of each cylindrical water tank 2. Can be easily adjusted and expanded according to the situation of the installation location.

なお、前記実施の形態に係る雨水貯留装置１においては、各円筒状貯水槽２の内部を一槽として全体で雨水を貯留するように構成したが、これに限らず、図３に示すように、雨水貯留装置１のうちの１つまたは複数（全部であってもよい）の円筒状貯水槽２を隔壁１５によって上下に区画し、下側の区画を貯留槽部２ａとし、上側の区画を用水槽部２ｂとして使用することができる。その場合、前記雨水取入管１２を有する円筒状貯水槽２にあっては、雨水取入管１２が上側の用水槽部２ｂに連通して設けられる。そして、前記隔壁１５の上面には、上端が用水槽部２ｂの上方に開口し、下端が下側の貯留槽部２ａ内に開口する溢流管１６が１つまたは複数本立設された構成とされる。   In the rainwater storage device 1 according to the embodiment, the inside of each cylindrical water storage tank 2 is configured to store rainwater as a whole, but not limited to this, as shown in FIG. One or more (or all) of the cylindrical water storage tanks 2 of the rainwater storage device 1 may be partitioned up and down by a partition wall 15, the lower partition may be a storage tank part 2 a, and the upper partition may be It can be used as the water tank 2b. In that case, in the cylindrical water storage tank 2 having the rainwater intake pipe 12, the rainwater intake pipe 12 is provided in communication with the upper water tank section 2b. The upper surface of the partition wall 15 is provided with one or more overflow pipes 16 having an upper end opened above the water tank 2b and a lower end opened in the lower storage tank 2a. Is done.

このように構成すると、降雨時には、雨水取入管１２を有する円筒状貯水槽２にあっては、雨水集合溝１１から雨水取入管１２を経て雨水が用水槽部２ｂに流入し、そこに一定水位の雨水が貯留されると、前記溢流管１６から溢れて前記貯留槽部２ａに流下してそこに貯留される。また、雨水取入管１２を有しない円筒状貯水槽２にあっては、雨水取入管１２を有する円筒状貯水槽２から連絡管１０を通して貯留槽部２ａ内に入った雨水がそこに満たされた後に、前記溢流管１６を介して前記用水槽部２ｂに入ってそこに貯留されることとなる。前記用水槽部２ｂに貯留された雨水は、所要時に取水筒として機能するマンホール９の蓋８を開いて、防火用水、散水用水等として有効利用することができる。   If comprised in this way, in the cylindrical water tank 2 which has the rainwater intake pipe 12 at the time of rain, rainwater will flow into the water tank part 2b from the rainwater collecting groove 11 via the rainwater intake pipe 12, and a fixed water level there. When the rainwater is stored, it overflows from the overflow pipe 16 and flows down to the storage tank 2a and is stored there. Moreover, in the cylindrical water tank 2 which does not have the rainwater intake pipe 12, the rainwater which entered the storage tank part 2a from the cylindrical water tank 2 having the rainwater intake pipe 12 through the connecting pipe 10 was filled there. Later, it enters the water tank 2b through the overflow pipe 16 and is stored there. The rainwater stored in the water tank 2b can be effectively used as fire prevention water, water for spraying, etc. by opening the lid 8 of the manhole 9 that functions as a water intake tube when necessary.

前記用水槽部２ｂは円筒状貯水槽２の上部に隔壁１５によって区画されて設けられ、溢流管１６を介して用水槽部２ｂからの溢流水が下側の貯留槽部２ａに貯留される構成されているので、排水管を設備した円筒状貯水槽２から雨水を外部へ排出して貯留槽部２ａ内の水位を調節した際でも、用水槽部２ｂ内には一定水位の雨水が貯留されており、常に用水を確保することができる。   The water tank 2b is provided on the upper part of the cylindrical water tank 2 by a partition wall 15, and the overflow water from the water tank 2b is stored in the lower storage tank 2a via the overflow pipe 16. Since it is configured, even when rainwater is discharged from the cylindrical water tank 2 equipped with a drain pipe and the water level in the storage tank 2a is adjusted, rainwater of a certain water level is stored in the water tank 2b. It is possible to always secure water.

また、前記実施の形態に係る雨水貯留装置１においては、円筒状貯水槽２を地中に鉛直に埋設する縦坑工法として、縦型シールド工法を使用したので、円筒状貯水槽２の地中への設置作業を円滑に、かつ能率良く行うことができて好ましいが、これに限らず、地盤を掘り下げながらセグメントリングを順次下側へ継ぎ足して埋設する「逆巻工法」と称する工法や、潜函工法等を使用することもできる。
さらに、各円筒状貯水槽２のセグメントリング４を構成するセグメント３として、コンクリートセグメントを使用したが、本発明はこれに限らず、鋼製セグメント、鋼製セグメントの内部にコンクリートを中詰めしてなる合成セグメントを使用することもできる。 Moreover, in the rainwater storage apparatus 1 which concerns on the said embodiment, since the vertical shield construction method was used as a vertical pit construction method which embeds the cylindrical water tank 2 vertically in the ground, the underground of the cylindrical water tank 2 However, the present invention is not limited to this, but is not limited to this, and a construction method called “reverse winding method” in which the segment ring is sequentially added to the lower side while being dug down, A construction method or the like can also be used.
Furthermore, although the concrete segment was used as the segment 3 which comprises the segment ring 4 of each cylindrical water tank 2, this invention is not restricted to this, Concrete is packed inside the steel segment and the steel segment. A synthetic segment can also be used.

本発明の一実施の形態に係る雨水貯留装置を示す斜視図である。It is a perspective view which shows the rainwater storage apparatus which concerns on one embodiment of this invention. 同じく雨水貯留装置における円筒状貯水槽の一例を示す縦断面図である。It is a longitudinal cross-sectional view which similarly shows an example of the cylindrical water tank in a rainwater storage apparatus. 同じく円筒状貯水槽の他の例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the other example of a cylindrical water tank similarly.

符号の説明Explanation of symbols

１ 雨水貯留装置
２ 円筒状貯水槽
２ａ 貯留槽部
２ｂ 用水槽部
３ セグメント
４ セグメントリング
５ 底版
６ 頂版
７ 地表部
８ 蓋板
９ マンホール
１０ 連絡管
１１ 雨水集合溝
１２ 雨水取入管
１５ 隔壁
１６ 溢流管 DESCRIPTION OF SYMBOLS 1 Rainwater storage device 2 Cylindrical water tank 2a Reservoir tank part 2b Water tank part 3 Segment 4 Segment ring 5 Bottom plate 6 Top plate 7 Ground surface part 8 Cover plate 9 Manhole 10 Connection pipe 11 Rainwater collecting groove 12 Rainwater intake pipe 15 Bulkhead 16 Overflow Flow tube

Claims (3)

複数のセグメントリングを上下に接続して地中に鉛直状に埋設してなる複数の円筒状貯水槽が、水平方向に所定間隔をあけて配置されると共に、それらの隣接するものどうしの下部が連絡管によって互いに連通され、また、少なくとも１つの円筒状水槽の上部には地上の雨水集合溝に連絡された雨水取入管が設けられ、さらに、少なくとも１つの円筒状貯水槽には内部の雨水を外部へ排出する排水管が設けられていることを特徴とする雨水貯留装置。   A plurality of cylindrical water tanks that are vertically embedded in the ground by connecting a plurality of segment rings vertically, are arranged at predetermined intervals in the horizontal direction, and the lower portions of those adjacent ones are A storm water intake pipe communicated with each other by a connecting pipe and connected to a ground water collecting groove on the ground is provided at the top of at least one cylindrical water tank. Further, at least one cylindrical water tank is provided with internal rain water. A rainwater storage device, characterized in that a drainage pipe for discharging to the outside is provided. 前記各円筒状貯水槽が縦型シールド工法により地中に埋設されてなることを特徴とする請求項１に記載の雨水貯留装置。   The rainwater storage device according to claim 1, wherein each cylindrical water storage tank is embedded in the ground by a vertical shield method. 前記円筒状貯水槽の少なくとも１つは、槽内が所定の高さ位置に設けた隔壁で上下に区画されており、上側に区画された用水槽部の頂版には、地上に開口し得る取水用筒が設けられていることを特徴とする請求項１または２に記載の雨水貯留装置。   At least one of the cylindrical water storage tanks is partitioned vertically by a partition wall provided at a predetermined height, and the top of the water tank section partitioned on the upper side can open to the ground. The rainwater storage device according to claim 1, wherein a water intake cylinder is provided.
JP2006314480A 2006-11-21 2006-11-21 Rainwater storage device Withdrawn JP2008127870A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012241458A (en) * 2011-05-23 2012-12-10 Akatsuki Shinnihon Kensetsu Kk Rainwater storage device
CN105089098A (en) * 2014-05-20 2015-11-25 北京泰宁科创雨水利用技术股份有限公司 Combined water storage tank
CN105113572A (en) * 2015-09-16 2015-12-02 江苏河马井股份有限公司 Cross stacking type water collecting combination module and assembling method thereof
CN105839760A (en) * 2016-05-27 2016-08-10 无锡市政设计研究院有限公司 Urban emergency rainwater drainage system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012241458A (en) * 2011-05-23 2012-12-10 Akatsuki Shinnihon Kensetsu Kk Rainwater storage device
CN105089098A (en) * 2014-05-20 2015-11-25 北京泰宁科创雨水利用技术股份有限公司 Combined water storage tank
CN105113572A (en) * 2015-09-16 2015-12-02 江苏河马井股份有限公司 Cross stacking type water collecting combination module and assembling method thereof
CN105839760A (en) * 2016-05-27 2016-08-10 无锡市政设计研究院有限公司 Urban emergency rainwater drainage system
CN105839760B (en) * 2016-05-27 2018-03-02 无锡市政设计研究院有限公司 Urban rainwater emergency dewatering system

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