JP2013079524A - Underground water storage unit and encapsulation body used for the same - Google Patents

Underground water storage unit and encapsulation body used for the same Download PDF

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JP2013079524A
JP2013079524A JP2011220097A JP2011220097A JP2013079524A JP 2013079524 A JP2013079524 A JP 2013079524A JP 2011220097 A JP2011220097 A JP 2011220097A JP 2011220097 A JP2011220097 A JP 2011220097A JP 2013079524 A JP2013079524 A JP 2013079524A
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bag
water storage
underground water
tank unit
block group
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JP5808216B2 (en
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Hisato Yoshida
寿人 吉田
Masahiko Tsunoda
正彦 角田
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BUTSURIN CO Ltd
Chichibu Chemical Co Ltd
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BUTSURIN CO Ltd
Chichibu Chemical 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

Abstract

PROBLEM TO BE SOLVED: To provide an underground water storage unit and an encapsulation body used for the same, capable of surely preventing water leakage without being affected by the degree of operation skill of a person in charge of construction and eliminating the need for a work to wrap a water storage block group by a water-impervious sheet at a construction site.SOLUTION: An encapsulation body is used for an underground water storage unit constructed by liquid-tightly encapsulating a synthetic resin water storage block group by the encapsulation body. The encapsulation body includes: a bag-like carrying-in bag which is provided with an opening on the top side and into which the water storage block group can be carried from the opening; and a plurality of folding parts which are provided at the edges of the opening of the carrying-in bag and function as lids of the carrying-in bag when they are folded. The structure of the carrying-in bag of the encapsulation body is configured as a multilayer structure, by repeatedly and alternately laminating at least a water-impervious sheet for water leakage prevention and a protective sheet for the prevention of tear of the water-impervious sheet, and the protective sheet being positioned on the outermost surface side of the carrying-in bag. Furthermore, a bottom part of the carrying-in bag is provided with a reinforcement plate.

Description

本発明は、雨水を地中に蓄え必要の際に蓄えた雨水を使用する際に用いる地下貯水槽ユニットおよびこの地下貯水槽ユニットに用いられる被包体に関する。   The present invention relates to an underground water tank unit used when rainwater is stored in the ground and used when needed, and an enclosure used for the underground water tank unit.

従来より、雨水を地中に埋設した地下貯水槽内に蓄え、必要の際にこの地下貯水槽内に貯められた雨水をポンプで汲み上げて使用するようにした地下貯水構造体が知られている。   Conventionally, an underground water storage structure has been known in which rainwater is stored in an underground water tank buried underground, and the rainwater stored in the underground water tank is pumped up and used when necessary. .

例えば特許文献１に開示された地下貯水構造体１００は、図１２に示したように、地中に埋設された地下貯水槽１０２と、家屋１０４の屋根や地表に落下した雨水を集めて地下貯水槽１０２内に導く集水手段１０６と、地下貯水槽１０２内に貯められた雨水を取出すポンプなどの取水手段１０８と、を備えた構造となっている。   For example, as shown in FIG. 12, the underground water storage structure 100 disclosed in Patent Document 1 collects underground water storage tanks 102 buried in the ground and rainwater that has fallen on the roof of the house 104 or the ground surface. It has a structure provided with water collecting means 106 that leads into the tank 102 and water intake means 108 such as a pump for taking out rainwater stored in the underground water storage tank 102.

地下貯水構造体１００は、地震や津波などの緊急災害時における水の確保を目的として、例えば公園や商業施設など比較的大きな施設の敷地内に埋設されるのが一般的であるが、近年では緊急災害に対する個人の備えの高まりから、個人の住宅にも設置されるようになっており、この傾向は今後さらに増えて行くものと推測される。   The underground water storage structure 100 is generally buried in a relatively large facility site such as a park or a commercial facility for the purpose of securing water in an emergency disaster such as an earthquake or tsunami. It is estimated that this trend will increase further in the future due to the increase in individual preparations for emergency disasters.

ところで、このような地下貯水構造体１００は、まず施工現場に地下貯水槽１０２を形成するための埋設穴を掘っておき、ここに水漏れ防止を目的としたシート状の遮水シート１１０を配置する。   By the way, in such an underground water storage structure 100, first, a buried hole for forming the underground water storage tank 102 is dug in the construction site, and a sheet-shaped impermeable sheet 110 for the purpose of preventing water leakage is disposed here. To do.

そして、埋設穴内に配置された遮水シート１１０上に、複数の合成樹脂製の貯水ブロック群１１２を載置させ、その後、遮水シート１１０の周囲を立ち上げて貯水ブロック群１１２の周囲を遮水シート１１０で包囲し、さらに貯水ブロック群１１２の上面に遮水シート１１０の端部を載せて包み込むことで地下貯水槽１０２が形成されるようになっている。   Then, a plurality of synthetic resin water storage block groups 112 are placed on the water impervious sheet 110 disposed in the buried hole, and then the periphery of the water impervious sheet 110 is raised to block the periphery of the water storage block group 112. The underground water storage tank 102 is formed by being surrounded by the water sheet 110 and enclosing the water blocking block 110 on the upper surface of the water storage block group 112.

なお遮水シート１１０は、幅２ｍほどの長尺ロール状であるため、埋設穴に対して、この遮水シート１１０の端部が互いに重なり合うように列状に並べ、遮水シート１１０と遮水シート１１０との重ね合わされた箇所を、施工現場で接着または溶着させることで、埋設穴に合った大きな遮水シート１１０をその都度構成するようにしている。   In addition, since the water-impervious sheet 110 has a long roll shape with a width of about 2 m, the water-impervious sheet 110 and the water-impervious sheet 110 are arranged in a row so that the end portions of the water-impervious sheet 110 overlap each other with respect to the embedded hole. The large water-impervious sheet 110 that fits the buried hole is constructed each time by bonding or welding the overlapped portion with the sheet 110 at the construction site.

特開２０００−３０９９５８号公報JP 2000-309958 A

しかしながら、遮水シート１１０と遮水シート１１０との重なり合った部分の接着または溶着は、施工現場ごとに工事担当者が行うため、工事担当者の習熟具合によっては接着または溶着が充分でなく、漏水が生じてしまうおそれがあった。   However, since the person in charge of the construction of the overlapped portion of the water-impervious sheet 110 and the water-impervious sheet 110 is performed at each construction site, the adhesion or welding is not sufficient depending on the level of proficiency of the person in charge of the construction. Could occur.

このため、地下貯水槽１０２を埋設する前に遮水シート１１０の充分な漏水チェックが行われてはいるものの、やはり実際に雨水を地下貯水槽１０２内に貯水してみないと、確実に漏水が防止できているか否かの判断ができないのが現状である。   For this reason, a sufficient leak check of the water shielding sheet 110 has been performed before the underground water storage tank 102 is buried, but if the rainwater is not actually stored in the underground water storage tank 102, the water leakage will surely occur. The current situation is that it is not possible to determine whether or not this has been prevented.

本発明は、このような現状に鑑み、工事担当者の習熟具合に左右されることなく、確実に漏水を防止することができ、施工現場で貯水ブロック群を遮水シートで包み込む作業を経る必要のない地下貯水槽ユニットおよび地下貯水槽ユニットに用いられる被包体を提供することを目的とする。   In view of such a current situation, the present invention can surely prevent water leakage without being affected by the level of proficiency of the person in charge of construction, and needs to undergo a work of wrapping the water storage block group with a water shielding sheet at the construction site. It is an object of the present invention to provide an enclosure used for an underground water storage tank unit and an underground water storage tank unit.

本発明は、前述したような従来技術における課題及び目的を達成するために発明されたものであって、
本発明の地下貯水槽ユニットに用いられる被包体は、
合成樹脂製の貯水ブロック群を被包体で液密に被包して構成された地下貯水槽ユニットに用いられる被包体であって、
前記被包体は、
天側に開口を備え前記開口から内部に前記貯水ブロック群を搬入することのできる袋状の搬入袋と、
前記搬入袋の開口の縁部に設けられ、折り返した際に前記搬入袋の蓋として機能する複数の折り返し部と、
を備え、
前記被包体の前記搬入袋の構造が、少なくとも漏水防止用の遮水シートと前記遮水シートの破れ防止用の保護シートとを交互に繰り返し積層して成り、前記保護シートが前記搬入袋の最外表面側に位置する多層構造であり、
前記搬入袋の底面部分には、さらに補強板が備えられていることを特徴とする。 The present invention was invented in order to achieve the problems and objects in the prior art as described above,
The enveloping body used for the underground water tank unit of the present invention is:
An enveloping body used for an underground water tank unit configured by liquid-tightly encapsulating a synthetic resin water storage block group with an enveloping body,
The encapsulation is
A bag-like carrying bag that has an opening on the top side and can carry the water storage block group into the inside from the opening;
A plurality of folded portions provided at the edge of the opening of the carry-in bag and functioning as lids of the carry-in bag when folded;
With
The structure of the carry-in bag of the enveloping body is formed by alternately and repeatedly laminating at least a water-proof sheet for preventing water leakage and a protective sheet for preventing breakage of the water-proof sheet, and the protective sheet is formed on the carry-in bag. Multi-layer structure located on the outermost surface side,
The bottom portion of the carry-in bag is further provided with a reinforcing plate.

このように被包体が袋状に構成されていれば、予め袋状の被包体内に貯水ブロック群を搬入して地下貯水槽ユニットを作成しておき、この地下貯水槽ユニットを施工現場の埋設穴に埋設するだけで良いため、施工手順を簡素化して工期を早めることができる。   In this way, if the enveloping body is configured in a bag shape, an underground water storage tank unit is created by carrying a water storage block group into the bag-shaped enveloping body in advance, and this underground water storage tank unit is installed at the construction site. Since it is only necessary to embed in the burial hole, the construction procedure can be simplified and the construction period can be shortened.

また、従来のように埋設穴内で遮水シートを接着または溶接する必要がないため、工事担当者の習熟具合に左右されることなく確実に漏水の生ずることのない地下貯水槽ユニットを提供することができる。   In addition, since it is not necessary to bond or weld a water shielding sheet in a buried hole as in the prior art, an underground water storage tank unit that does not cause water leakage reliably without being affected by the level of proficiency of construction personnel is provided. Can do.

さらに、被包体の搬入袋の底面部分に補強板が備えられているため、施工時において被包体内に貯水ブロック群を搬入した状態の地下貯水槽ユニットを持ち上げた際にも、被包体内部の貯水ブロック群がぐらついたり、ばらけたりすることがなく、確実にユニット化された状態で埋設穴内へ地下貯水槽ユニットを運び入れることができる。   Further, since the reinforcing plate is provided on the bottom surface portion of the encasement bag, the envelopment body can also be lifted when the underground water tank unit in the state where the water storage block group is carried into the encapsulant is lifted during construction. The underground water storage tank unit can be carried into the buried hole in a state of being surely unitized without causing the internal water storage block group to fluctuate or fluctuate.

また、本発明の地下貯水槽ユニットに用いられる被包体は、
前記補強板が、
前記遮水シートと前記保護シートとの間に設けられていることを特徴とする。 Moreover, the envelope used for the underground water tank unit of the present invention is:
The reinforcing plate is
It is provided between the water shielding sheet and the protective sheet.

このような位置に補強板が設けられていれば、遮水シートと保護シートの役割を果たしつつ、被包体内に貯水ブロック群を搬入した状態で地下貯水槽ユニットを持ち上げても、内部の貯水ブロック群がぐらついたり、ばらけたりすることがなく、確実にユニット化された状態で埋設穴内へ地下貯水槽ユニットを運び入れることができる。   If the reinforcing plate is provided at such a position, the internal water storage can be performed even if the underground water storage tank unit is lifted with the storage block group carried into the enveloping body while serving as a water shielding sheet and a protection sheet. The underground water tank unit can be carried into the buried hole in a unitized state without blockiness of the block group.

また、本発明の地下貯水槽ユニットに用いられる被包体は、
前記被包体の前記搬入袋が、
四角袋状に構成されていることを特徴とする。 Moreover, the envelope used for the underground water tank unit of the present invention is:
The carrying bag of the envelope is
It is configured in a square bag shape.

このように搬入袋が四角袋状であれば、内部に搬入される貯水ブロック群が四角状であるため、ぴったりと搬入袋内に貯水ブロック群を搬入することができる。
したがって、埋設穴に地下貯水槽ユニットを運び入れる際にも搬入袋の余剰箇所が埋設時の邪魔になったりすることがなく、施工工事を正確且つ確実に行うことができる。 In this way, if the carry-in bag is a square bag shape, the water storage block group carried into the inside is a square shape, so that the water storage block group can be carried into the carry-in bag exactly.
Therefore, even when the underground water storage tank unit is carried into the burial hole, the surplus portion of the carry-in bag does not interfere with the burial, and the construction work can be performed accurately and reliably.

また、本発明の地下貯水槽ユニットに用いられる被包体は、
前記被包体の上側から前記被包体を覆う逆さ袋状の防草袋をさらに備えることを特徴とする。 Moreover, the envelope used for the underground water tank unit of the present invention is:
It further comprises an upside-down bag-shaped weed bag covering the encapsulant from above the encapsulant.

このように防草袋を備えれば、埋設後に地表面から草の根が延びても草の根が被包体内に侵入してしまうことがなく、地下貯水槽ユニットとしての機能を長期間維持することができる。   By providing the grassproof bag in this way, even if the grass roots extend from the ground surface after being buried, the grass roots do not enter the encapsulated body, and the function as the underground water tank unit can be maintained for a long period of time. .

また、本発明の地下貯水槽ユニットは、
上記のいずれかに記載の地下貯水槽ユニットに用いられる被包体内に、合成樹脂製の貯水ブロック群を液密に被包してなることを特徴とする。 The underground water tank unit of the present invention is
The enclosure used for the underground water storage tank unit described in any one of the above is characterized in that a synthetic resin water storage block group is encapsulated in a liquid-tight manner.

このようにして構成される地下貯水槽ユニットであれば、地下貯水槽の施工時において、予め製造された地下貯水槽ユニットを、施工現場の埋設穴内に運び入れて埋設するだけで良いため、工期を大幅に短縮させることができるとともに、工事担当者の習熟具合に左右されることなく確実に漏水を防止することのできる地下貯水構造体を提供することができる。   If it is an underground water tank unit configured in this way, it is only necessary to carry the underground water tank unit manufactured in advance into the burial hole at the construction site and embed it when constructing the underground water tank. It is possible to provide an underground water storage structure that can significantly reduce water leakage and reliably prevent water leakage without being affected by the level of proficiency of construction personnel.

また、本発明の地下貯水槽ユニットは、
前記被包体の天側に、前記地下貯水槽ユニット内に雨水を流入させるための流入管を備えることを特徴とする。
このように流入管を備えれば、雨水を確実に地下貯水槽ユニット内に取り入れることができる。
さらに、地下貯水槽の施工時における作業工程を減らすことができ、工期を大幅に短縮させることができる。 The underground water tank unit of the present invention is
An inflow pipe for allowing rainwater to flow into the underground water storage tank unit is provided on the top side of the enclosure.
If an inflow pipe is provided in this way, rainwater can be reliably taken into the underground water storage tank unit.
Furthermore, the work process at the time of construction of the underground water tank can be reduced, and the construction period can be greatly shortened.

また、本発明の地下貯水槽ユニットは、
前記被包体の天側に、前記地下貯水槽ユニット内に貯水された雨水の汲み上げ時に用いられる取水管を備えることを特徴とする。 The underground water tank unit of the present invention is
A water intake pipe used for pumping rainwater stored in the underground water storage tank unit is provided on the top side of the enveloping body.

このように取水管を備えれば、必要の際に確実に雨水を地下貯水槽ユニット内から取り出すことができる。また、地下貯水槽の施工時における作業工程を減らすことができ、工期を大幅に短縮させることができる。   If the intake pipe is provided in this way, rainwater can be reliably taken out from the underground water tank unit when necessary. Moreover, the work process at the time of construction of an underground water tank can be reduced, and a construction period can be shortened significantly.

本発明によれば、予め被包体が袋状に構成され、施工現場以外の場所で地下貯水槽ユニットの製造が可能であり、施工時には予め製造しておいた地下貯水槽ユニットを施工現場に運んで埋設するだけで良いため、工事担当者の習熟具合に左右されることなく、確実に漏水を防止することができ、施工現場で貯水ブロック群を遮水シートで包み込む作業を経る必要のない地下貯水槽ユニットおよび地下貯水槽ユニットに用いられる被包体を提供することができる。   According to the present invention, the enveloping body is configured in a bag shape in advance, and an underground water tank unit can be manufactured at a place other than the construction site. Since it is only necessary to carry and bury it, it can be reliably prevented from leaking without being affected by the level of proficiency of the person in charge of construction, and there is no need to wrap the storage block group with a water shielding sheet at the construction site. The enveloping body used for an underground water tank unit and an underground water tank unit can be provided.

図１は、本発明の地下貯水槽ユニットを埋設してなる地下貯水構造体の概略図である。FIG. 1 is a schematic view of an underground water storage structure in which an underground water storage tank unit of the present invention is embedded. 図２は、本発明の地下貯水槽ユニットの斜視図である。FIG. 2 is a perspective view of the underground water tank unit of the present invention. 図３は、本発明の地下貯水槽ユニットに用いられる被包体の斜視図である。FIG. 3 is a perspective view of an enveloping body used in the underground water tank unit of the present invention. 図４は、本発明の被包体の内部に貯水ブロック群を搬入した状態を示す斜視図である。FIG. 4 is a perspective view showing a state in which the water storage block group is carried into the enveloping body of the present invention. 図５は、本発明の被包体の内部に貯水ブロック群を搬入し、折り返し部を折り返した状態を示す斜視図である。FIG. 5 is a perspective view showing a state where the water storage block group is carried into the enveloping body of the present invention and the folded portion is folded. 図６は、本発明の被包体の内部に貯水ブロック群を搬入して折り返し部を折り返し、折り返し部の端部を接着または溶接して貯水ブロック群を被包体で液密に被包した状態を示す斜視図である。FIG. 6 shows that the water storage block group is carried into the enveloping body of the present invention, the folded portion is folded, the end of the folded portion is bonded or welded, and the water storage block group is liquid-tightly encapsulated with the enveloping body. It is a perspective view which shows a state. 図７は、図２に示した本発明の地下貯水槽ユニットのＡ−Ａ線による断面図である。FIG. 7 is a cross-sectional view taken along line AA of the underground water tank unit of the present invention shown in FIG. 図８は、図７のＢ部の拡大図である。FIG. 8 is an enlarged view of a portion B in FIG. 図９は、図７のＣ部の拡大図である。FIG. 9 is an enlarged view of a portion C in FIG. 図１０は、本発明の地下貯水槽ユニットの上に、防草袋を配設した状態を示す斜視図である。FIG. 10 is a perspective view showing a state in which a grassproof bag is disposed on the underground water storage tank unit of the present invention. 図１１は、本発明の地下貯水槽ユニットの上から防草袋を覆った状態を示す斜視図である。FIG. 11 is a perspective view showing a state in which a grassproof bag is covered from above the underground water storage tank unit of the present invention. 図１２は、従来の地下貯水構造体の概略図である。FIG. 12 is a schematic view of a conventional underground water storage structure.

以下、本発明の実施の形態（実施例）を図面に基づいてより詳細に説明する。
本発明の地下貯水槽ユニットは、地中に埋設されて雨水を内部に蓄え、必要の際に蓄えた雨水を取出して使用するために用いられるものであり、被包体はこの地下貯水槽ユニットにおいて、貯水ブロック群を液密に被包する際に用いられるものである。
まず、本発明の地下貯水槽ユニットを備えた地下貯水構造体について説明する。 Hereinafter, embodiments (examples) of the present invention will be described in more detail with reference to the drawings.
The underground water tank unit of the present invention is embedded in the ground, stores rainwater inside, and is used to take out and use the rainwater stored when necessary. The enveloping body is this underground water tank unit. Is used when the water storage block group is encapsulated in a liquid-tight manner.
First, an underground water storage structure including the underground water storage tank unit of the present invention will be described.

＜地下貯水構造体１０＞
地下貯水構造体１０は、図１に示したように、地面７０の地下に埋設された地下貯水槽ユニット２０と、家屋の屋根や地面７０に落下した雨水を流入口６０から流入管６２を介して地下貯水槽ユニット２０内に導く集水手段６４と、地下貯水槽１０２内に貯められた雨水を、取水管５２を介して連結されたポンプ５０で外部に取出す取水手段５４と、地下貯水槽１０２が満水になった際に、雨水を流出させるオーバーフロー管６６と、を少なくとも備えた構造となっている。
このような地下貯水構造体１０では、施工現場外で予め製造されてユニット化されてなる地下貯水槽ユニット２０が用いられている。 <Underground water storage structure 10>
As shown in FIG. 1, the underground water storage structure 10 includes an underground water storage tank unit 20 buried under the ground 70 and rainwater that has fallen on the roof of the house or the ground 70 from an inlet 60 through an inflow pipe 62. A water collecting means 64 for guiding the water into the underground water storage tank unit 20, a water intake means 54 for taking out rainwater stored in the underground water storage tank 102 to the outside by a pump 50 connected via a water intake pipe 52, and an underground water storage tank It has a structure including at least an overflow pipe 66 for allowing rainwater to flow out when the water becomes full.
In such an underground water storage structure 10, an underground water storage tank unit 20 manufactured in advance and unitized outside the construction site is used.

＜地下貯水槽ユニット２０＞
ユニット化された本発明の地下貯水槽ユニット２０は、図２に示したように、被包体２６の内部に合成樹脂製の貯水ブロック群２２を液密に被包してなるものである。 <Underground water tank unit 20>
As shown in FIG. 2, the united underground water storage tank unit 20 of the present invention is formed by encapsulating a synthetic resin water storage block group 22 in a liquid-tight manner inside an enveloping body 26.

被包体２６は、図３に示したように天側に開口３２を備え、この開口３２から内部に合成樹脂製の貯水ブロック群２２を搬入できる搬入袋２８と、この搬入袋２８の開口３２の縁部に設けられた折り返し部３０と、から構成されている。   As shown in FIG. 3, the enveloping body 26 has an opening 32 on the top side, a carry-in bag 28 into which the synthetic resin water storage block group 22 can be carried, and an opening 32 of the carry-in bag 28. And a folded-back portion 30 provided at the edge portion.

このような被包体２６は、図３に示したように初めからシートを袋状に加工して構成されていることが好ましいが、例えば方形のシートを袋状となるように畳んで構成されたもの（図示せず）であっても良く特に限定されるものではないものである。   Such an enveloping body 26 is preferably configured by processing a sheet into a bag shape from the beginning as shown in FIG. 3, but for example, it is configured by folding a rectangular sheet into a bag shape. (Not shown) may be used and is not particularly limited.

なお、被包体２６の内部に搬入される合成樹脂製の貯水ブロック群２２は、施工現場の大きさに合わせて複数の貯水ブロック２４を適宜連結してなるものであり、地下貯水槽ユニット２０を地面７０の地下に埋設した際に、例えば地面７０から加わる乗用車やトラックなどの加重に耐え得る強度を有するとともに、適度な空隙によって所望の貯水能力を備え、腐食が生じないよう構成されたものであれば如何なるものでも良いものである。このような貯水ブロック群２２の具体的な例としては、例えば秩父ケミカル株式会社製のプラダムくん（登録商標）が挙げられる。   In addition, the synthetic resin water storage block group 22 carried into the enclosure 26 is formed by appropriately connecting a plurality of water storage blocks 24 according to the size of the construction site. Is embedded in the ground of the ground 70, for example, has a strength capable of withstanding the weight of passenger cars, trucks, etc. applied from the ground 70, and has a desired water storage capacity by an appropriate gap, so that corrosion does not occur Anything can be used. A specific example of such a water storage block group 22 is Pradamun (registered trademark) manufactured by Chichibu Chemical Co., Ltd., for example.

地下貯水槽ユニット２０は、図４に示したように、上記した被包体２６の搬入袋２８の開口３２から内部に貯水ブロック群２２を搬入し、図５に示したように開口３２の縁部の折り返し部３０を内側に折り返し、最後に図６に示したように押し返し部３０の重なり合った部分を接着または溶接することで完成される。   As shown in FIG. 4, the underground water storage tank unit 20 carries the water storage block group 22 into the inside through the opening 32 of the carry-in bag 28 of the envelope 26 described above, and the edge of the opening 32 as shown in FIG. 5. The folded portion 30 is folded inward, and finally, the overlapped portion of the pushed-back portion 30 is bonded or welded as shown in FIG.

ここで上記の接着または溶接の方法としては、特に限定されるものではなく、例えば市販の耐水性接着剤を用いたり、ハンディータイプの溶着機を用いることが挙げられる。
このような地下貯水槽ユニット２０の縦断面を見ると、図７に示したように被包体２６の内部にぴったりと貯水ブロック群２２が整列配置されてユニット化されていることが分かる。 Here, the bonding or welding method is not particularly limited, and for example, a commercially available water-resistant adhesive or a handy type welding machine may be used.
Looking at the longitudinal section of such an underground water storage tank unit 20, it can be seen that the water storage block group 22 is aligned and arranged in the enclosure 26 exactly as shown in FIG.

被包体２６の大きさや内部に搬入される貯水ブロック群２２の数については、施工現場の大きさに合わせて適宜決めれば良いものであるが、例えば縦１５００ｍｍ×横３０００ｍｍ×高さ１２００ｍｍ程度の容積量となる被包体２６を用意し、この被包体２６の内部に縦７５０ｍｍ×横７５０ｍｍ×高さ３００ｍｍの貯水ブロック２４を３２個、直方体となるように連結した貯水ブロック群２２を搬入すれば、大凡５ｍ3程度の雨水を貯水することができる。このような大きさは、個人の住宅向けに好適な寸法であるため、この大きさでまとめて製造するようにすれば、工期の短縮とともに製造コストを抑えることができる。 The size of the encapsulating body 26 and the number of the water storage block groups 22 carried into the interior may be appropriately determined in accordance with the size of the construction site. For example, the length is about 1500 mm × width 3000 mm × height about 1200 mm. An enveloping body 26 having a volume amount is prepared, and 32 water storage blocks 24 each having a length of 750 mm, a width of 750 mm, and a height of 300 mm, and a water storage block group 22 connected to form a rectangular parallelepiped are carried into the enveloping body 26. If this is done, about 5 m 3 of rainwater can be stored. Since such a size is suitable for an individual's house, if it manufactures collectively by this size, a manufacturing cost can be suppressed with shortening of a construction period.

なお、個人の住宅よりも大きな現場に対しては、上記した個人の住宅向けの大きさで製造された地下貯水槽ユニット２０を複数用いることが好ましく、このようにすれば施工現場が広くても複数の地下貯水槽ユニット２０を並べて埋設するだけで良いため、従来の施工方法よりも工期を短縮できるとともにコストを抑えることができる。また、このような施工方法であれば、一部の地下貯水槽ユニット２０が破損しても、他の地下貯水槽ユニット２０が正常に機能するため破損によるリスクを低減することができる。   It should be noted that it is preferable to use a plurality of underground water tank units 20 manufactured in the above-described sizes for individual houses for sites larger than individual houses. Since it is only necessary to bury the plurality of underground water storage tank units 20 side by side, the construction period can be shortened and the cost can be reduced as compared with the conventional construction method. Moreover, if it is such a construction method, even if some underground water tank units 20 are damaged, since the other underground water tank units 20 function normally, the risk by damage can be reduced.

また、本発明の地下貯水槽ユニット２０では、図８に示したように、被包体２６の構造が、少なくとも漏水防止用の遮水シート３６と、遮水シート３６の破れ防止用の保護シート３４とを、交互に繰り返し積層して成る多層構造となっており、搬入袋２８の最外表面側に保護シート３４が位置するよう構成されている。   Moreover, in the underground water storage tank unit 20 of the present invention, as shown in FIG. 8, the structure of the enveloping body 26 includes at least a water shielding sheet 36 for preventing water leakage and a protective sheet for preventing the water shielding sheet 36 from being broken. 34 is formed by alternately and repeatedly stacking the protective sheet 34 on the outermost surface side of the carry-in bag 28.

保護シート３４としては、遮水シート３６の破れを防止できるだけの強度があり、土砂の侵入，漏水，草の根の侵入を防ぐことができ、土中のバクテリア，酸，アルカリなどに侵食されず、シートの成分が溶出して、水，土壌を汚染しないものであれば如何なるものであっても良いものである。   The protective sheet 34 is strong enough to prevent breakage of the water-impervious sheet 36, can prevent invasion of earth and sand, water leakage, grass root invasion, is not eroded by bacteria, acids, alkalis, etc. in the soil, and is a sheet Any component may be used as long as it does not contaminate water and soil.

保護シート３４の具体例としては、ポリエステル製不織布が挙げられる。
また遮水シート３６については、地下貯水槽ユニット２０内が満水となった際にも、雨水が外方に漏れ出さない程度の強度があれば如何なるものであっても良いものである。
遮水シート３６の具体例としては、ポリエチレンシート，酢酸ビニールシートが挙げられる。
なお、被包体２６の底部においては、図９に示したように、搬入袋２８の最外表面側に位置する保護シート３４の次に補強板３８が備えられている。 A specific example of the protective sheet 34 is a polyester nonwoven fabric.
Further, the water shielding sheet 36 may have any strength as long as rainwater does not leak outward even when the underground water tank unit 20 is full.
Specific examples of the water shielding sheet 36 include a polyethylene sheet and a vinyl acetate sheet.
As shown in FIG. 9, a reinforcing plate 38 is provided at the bottom of the enveloping body 26 next to the protective sheet 34 positioned on the outermost surface side of the carry-in bag 28.

この補強板３８は、被包体２６内に貯水ブロック群２２を搬入した状態で地下貯水槽ユニット２０を持ち上げた際に、内部の貯水ブロック群２２がぐらついたり、ばらけたりすることがなく、確実にユニット化された状態で埋設穴内へ地下貯水槽ユニット２０を運び入れることができるようにするためのものである。   This reinforcing plate 38 does not cause the internal water storage block group 22 to wobble or scatter when the underground water storage tank unit 20 is lifted with the water storage block group 22 carried into the enveloping body 26. This is to enable the underground water tank unit 20 to be carried into the buried hole in a unitized state.

補強板３８としては、被包体２６内に貯水ブロック群２２を搬入した状態で地下貯水槽ユニット２０を持ち上げても破損しないだけの強度を有すれば如何なるものであっても良いものである。   The reinforcing plate 38 may be anything as long as it has a strength that does not cause damage even if the underground water storage tank unit 20 is lifted in a state where the water storage block group 22 is carried into the enclosure 26.

補強板３８の具体例としては、一般的に広く市販されているプラスチックダンボール（プラダン）が挙げられ、地下貯水槽ユニット２０の重量に合わせて強度を調整すれば良いものである。   A specific example of the reinforcing plate 38 is a plastic cardboard (pradan) that is generally widely marketed. The strength may be adjusted according to the weight of the underground water storage tank unit 20.

本実施例においては、補強板３８を搬入袋２８の最外表面側から二層目に設けているが、この位置については特に限定されるものではなく、最外表面以外であれば如何なる位置にあっても良く、また枚数も特に限定されるものではないものである。さらに保護シート３４と遮水シート３６の枚数についても特に限定されず、同じシートが複数重なっていても良いものである。   In this embodiment, the reinforcing plate 38 is provided in the second layer from the outermost surface side of the carry-in bag 28. However, this position is not particularly limited, and any position other than the outermost surface is provided. It may be present and the number of sheets is not particularly limited. Further, the number of the protective sheets 34 and the water shielding sheets 36 is not particularly limited, and a plurality of the same sheets may be overlapped.

また、地下貯水槽ユニット２０は、地下貯水槽ユニット２０内に雨水を流入させるための流入管６２や貯水された雨水を汲み上げる際に用いる取水管５２を予め備えても良いものである。   In addition, the underground water storage tank unit 20 may be provided in advance with an inflow pipe 62 for allowing rainwater to flow into the underground water storage tank unit 20 and a water intake pipe 52 used for pumping the stored rainwater.

これらの管は、埋設穴に地下貯水槽ユニット２０を搬入してから設置することもできるが、工期短縮や取り付けの確実性を鑑みれば、施工前に形成しておくことが好ましい。
また、図１０に示したように、地下貯水槽ユニット２０の上に防草袋４０を配置し、これを図１１に示したように地下貯水槽ユニット２０の上から覆うようにしても良い。 These pipes can be installed after the underground water tank unit 20 is carried into the burial hole, but in view of shortening the construction period and the certainty of attachment, it is preferable to form these pipes before construction.
Further, as shown in FIG. 10, a grassproof bag 40 may be arranged on the underground water tank unit 20 and covered from above the underground water tank unit 20 as shown in FIG.

なお、図７に示したような保護シート３４や遮水シート３６の積層体であれば、地面７０から延びる草の根が被包体２６を破って内部に侵入するおそれはないが、防草袋４０を用いればさらに確実性が増すため、より確かに浸水を防止することができる。   In the case of the laminated body of the protective sheet 34 and the water shielding sheet 36 as shown in FIG. 7, there is no possibility that the grass roots extending from the ground 70 break the encapsulant 26 and enter the inside, but the grass bag 40 If is used, the certainty is further increased, so that it is possible to prevent the flooding more surely.

以上、本発明の好ましい実施の態様を説明してきたが、本発明はこれに限定されることはなく、本発明の目的を逸脱しない範囲で種々の変更が可能なものである。   The preferred embodiment of the present invention has been described above, but the present invention is not limited to this, and various modifications can be made without departing from the object of the present invention.

１０・・・地下貯水構造体
２０・・・地下貯水槽ユニット
２２・・・貯水ブロック群
２４・・・貯水ブロック
２６・・・被包体
２８・・・搬入袋
３０・・・折り返し部
３２・・・開口
３４・・・保護シート
３６・・・遮水シート
３８・・・補強板
４０・・・防草袋
５０・・・ポンプ
５２・・・取水管
５４・・・取水手段
６０・・・流入口
６２・・・流入管
６４・・・集水手段
６６・・・オーバーフロー管
７０・・・地面
１００・・・地下貯水構造体
１０２・・・地下貯水槽
１０４・・・家屋
１０６・・・集水手段
１０８・・・取水手段
１１０・・・遮水シート
１１２・・・貯水ブロック群 DESCRIPTION OF SYMBOLS 10 ... Underground water storage structure 20 ... Underground water tank unit 22 ... Water storage block group 24 ... Water storage block 26 ... Cover body 28 ... Carry-in bag 30 ... Folding part 32. ..Opening 34 ... Protective sheet 36 ... Water shielding sheet 38 ... Reinforcing plate 40 ... Weedproof bag 50 ... Pump 52 ... Water intake pipe 54 ... Water intake means 60 ... Inlet 62 ... Inflow pipe 64 ... Water collecting means 66 ... Overflow pipe 70 ... Ground 100 ... Underground water storage structure 102 ... Underground water storage tank 104 ... House 106 ... Water collecting means 108 ... Water intake means 110 ... Water shielding sheet 112 ... Water storage block group

Claims (7)

合成樹脂製の貯水ブロック群を被包体で液密に被包して構成された地下貯水槽ユニットに用いられる被包体であって、
前記被包体は、
天側に開口を備え前記開口から内部に前記貯水ブロック群を搬入することのできる袋状の搬入袋と、
前記搬入袋の開口の縁部に設けられ、折り返した際に前記搬入袋の蓋として機能する複数の折り返し部と、
を備え、
前記被包体の前記搬入袋の構造が、少なくとも漏水防止用の遮水シートと前記遮水シートの破れ防止用の保護シートとを交互に繰り返し積層して成り、前記保護シートが前記搬入袋の最外表面側に位置する多層構造であり、
前記搬入袋の底面部分には、さらに補強板が備えられていることを特徴とする地下貯水槽ユニットに用いられる被包体。 An enveloping body used for an underground water tank unit configured by liquid-tightly encapsulating a synthetic resin water storage block group with an enveloping body,
The encapsulation is
A bag-like carrying bag that has an opening on the top side and can carry the water storage block group into the inside from the opening;
A plurality of folded portions provided at the edge of the opening of the carry-in bag and functioning as lids of the carry-in bag when folded;
With
The structure of the carry-in bag of the enveloping body is formed by alternately and repeatedly laminating at least a water-proof sheet for preventing water leakage and a protective sheet for preventing breakage of the water-proof sheet, and the protective sheet is formed on the carry-in bag. Multi-layer structure located on the outermost surface side,
An enveloping body used for an underground water storage tank unit, further comprising a reinforcing plate on a bottom surface portion of the carry-in bag. 前記補強板が、
前記遮水シートと前記保護シートとの間に設けられていることを特徴とする請求項１に記載の地下貯水槽ユニットに用いられる被包体。 The reinforcing plate is
The enveloping body used for the underground water storage tank unit according to claim 1, wherein the enveloping body is provided between the water shielding sheet and the protective sheet. 前記被包体の前記搬入袋が、
四角袋状に構成されていることを特徴とする請求項１または２に記載の地下貯水槽ユニットに用いられる被包体。 The carrying bag of the envelope is
It is comprised in the shape of a square bag, The covering body used for the underground water tank unit of Claim 1 or 2 characterized by the above-mentioned. 前記被包体の上側から前記被包体を覆う逆さ袋状の防草袋をさらに備えることを特徴とする請求項１〜３のいずれかに記載の地下貯水槽ユニットに用いられる被包体。   The enveloping body used for the underground water storage tank unit according to any one of claims 1 to 3, further comprising an inverted bag-shaped weed bag covering the encapsulating body from above the encapsulating body. 請求項１〜４のいずれかに記載の地下貯水槽ユニットに用いられる被包体内に、合成樹脂製の貯水ブロック群を液密に被包してなることを特徴とする地下貯水槽ユニット。   5. An underground water tank unit, wherein a resin resin block group is liquid-tightly encapsulated in an encapsulant used in the underground water tank unit according to claim 1. 前記被包体の天側に、前記地下貯水槽ユニット内に雨水を流入させるための流入管を備えることを特徴とする請求項５に記載の地下貯水槽ユニット。   The underground water storage tank unit according to claim 5, further comprising an inflow pipe for allowing rainwater to flow into the underground water storage tank unit on the top side of the enclosure. 前記被包体の天側に、前記地下貯水槽ユニット内に貯水された雨水の汲み上げ時に用いられる取水管を備えることを特徴とする請求項５または６に記載の地下貯水槽ユニット。   The underground water tank unit according to claim 5 or 6, further comprising a water intake pipe used when pumping rainwater stored in the underground water tank unit on the top side of the enclosure.
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JP2015078014A (en) * 2013-10-16 2015-04-23 株式会社 林物産発明研究所 Liquid storage tank
CN107366310A (en) * 2016-05-13 2017-11-21 三之星机带株式会社 The spraying waterproof construction method of underground storage groove
KR20170128144A (en) 2016-05-13 2017-11-22 미쓰보 시베루토 가부시키 가이샤 Water storage structure and Water storage method, for underground water storage structure
KR20170128145A (en) * 2016-05-13 2017-11-22 미쓰보 시베루토 가부시키 가이샤 Seepage control method using spraying, for underground water storage structure
JP2017206950A (en) * 2016-05-13 2017-11-24 三ツ星ベルト株式会社 Spraying seepage control method for underground reservoir
KR20190111859A (en) 2016-05-13 2019-10-02 미쓰보 시베루토 가부시키 가이샤 Seepage control method using spraying, for underground water storage structure
KR102211197B1 (en) * 2016-05-13 2021-02-02 미쓰보 시베루토 가부시키 가이샤 Seepage control method using spraying, for underground water storage structure
JP7502249B2 (en) 2021-11-24 2024-06-18 三ツ星ベルト株式会社 Method of laying waterproof sheets in underground water tanks

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