JP5742047B2 - A storage tank that prevents contact between the impervious sheet and the edge of the concrete foundation - Google Patents
A storage tank that prevents contact between the impervious sheet and the edge of the concrete foundation Download PDFInfo
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- JP5742047B2 JP5742047B2 JP2010240423A JP2010240423A JP5742047B2 JP 5742047 B2 JP5742047 B2 JP 5742047B2 JP 2010240423 A JP2010240423 A JP 2010240423A JP 2010240423 A JP2010240423 A JP 2010240423A JP 5742047 B2 JP5742047 B2 JP 5742047B2
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- concrete foundation
- storage tank
- water
- sheet
- edge
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000009415 formwork Methods 0.000 description 5
- 239000003673 groundwater Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 239000002352 surface water Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Sewage (AREA)
Description
本発明は、地下に設けた貯留槽に対し地下水に起因する浮力対策を施す技術に属する。 The present invention belongs to a technique for taking measures against buoyancy caused by groundwater in a storage tank provided underground.
雨水の流出抑制を目的として、プラスチックなどで製造された容器状あるいはパイプ状部材を単位部材として地下に配置し、必要に応じあるいは単位部材に応じ適宜継ぎ手などを使用して連結し、貯留空間を確保して雨水を一時的に貯留する貯留浸透施設が普及している。この目的のために各種の形状の部材が例えば特開昭62-101097、特開昭62-126179、特開平9-296486、特開平11-43971、特開平10-115778などに提案かつ使用されている。いずれの方法も単位部材を配置しその周囲を透水性もしくは遮水性のシート類で包み、その内部空間に雨水を貯留する貯留浸透施設とするものである。
かかる貯留浸透施設は地下水位が高い場所に設置する場合、地下水の貯留空間への進入を防止するため、その底部、側面を遮水シートで覆う必要がある。通常かかる貯留浸透施設に使用する単位部材はプラスチック製であり、地下水によって施設に浮力が働き、その対策が不十分である場合には施設全体が浮き上がり、破損する事態にもなりかねない。
浮力対策の一般的な方法は浮力に対抗できるだけの土被りを設け、土の重量で浮力を抑える方法あるいは特開2001-107403、特開平10-72090に開示された外部の水を槽内に導入する方法である。
For the purpose of controlling the outflow of rainwater, a container or pipe-shaped member made of plastic or the like is placed in the basement as a unit member, and connected using a joint or the like as needed or according to the unit member, and the storage space is Storage and infiltration facilities that secure and temporarily store rainwater are in widespread use. For this purpose, various shaped members have been proposed and used in, for example, Japanese Patent Laid-Open Nos. 62-101097, 62-126179, 9-296486, 11-43971, and 10-115778. Yes. In any of the methods, a unit member is arranged, and the periphery thereof is wrapped with a water-permeable or water-impervious sheet, and a storage and penetration facility for storing rainwater in its internal space is obtained.
When such a storage and penetration facility is installed in a place where the groundwater level is high, it is necessary to cover the bottom and sides of the storage and penetration facility with a water shielding sheet in order to prevent entry into the groundwater storage space. Usually, the unit member used in such a storage and penetration facility is made of plastic, and buoyancy acts on the facility due to the groundwater. If the countermeasures are insufficient, the entire facility may be lifted and damaged.
A common method of countermeasures for buoyancy is to provide a covering that can counteract buoyancy and to suppress buoyancy by the weight of the soil or to introduce external water disclosed in JP-A-2001-107403 and JP-A-10-72090 into the tank It is a method to do.
本発明は、浮力対策として貯留槽の重量を増加させ、遮水シートの保護を図る新規な対策を提案するものである。 The present invention proposes a new measure for protecting the water shielding sheet by increasing the weight of the storage tank as a measure for buoyancy.
本発明は、地下貯留槽に対する浮力対策手段の提案にある。 This invention exists in the proposal of the buoyancy countermeasure means with respect to an underground storage tank.
本発明は、地表面を掘り下げ、形成された凹部の底面に遮水シートを敷設し底面遮水シートとし、当該底面遮水シート面上にコンクリート基礎を打設しコンクリート基礎を形成し、当該コンクリート基礎面上に単位部材を配列して貯留空間を形成し、当該貯留空間とコンクリート基礎を一体としてその側面を遮水シートで囲み側面遮水シートとし、当該側面遮水シートと底面遮水シートとを一体化した雨水等の貯留槽において前記コンクリート基礎縁部と遮水シートとの接触を防止するため表面が滑らかな型枠を配設した雨水等の貯留槽である。
コンクリート基礎と貯留空間の両方を遮水シートで覆うことで貯留槽の重量を増加し浮力対策とし、コンクリート基礎の縁部に表面が滑らかな型枠を使用し、コンクリート基礎縁部の角と遮水シートとの接触を防止することで遮水シートの破損を防いで貯留槽としての機能の保護を強化した。
The present invention digs the ground surface, lays a water-impervious sheet on the bottom surface of the formed recess to form a bottom water-impervious sheet, casts a concrete foundation on the bottom water-impervious sheet surface, forms a concrete foundation, Unit members are arranged on the foundation surface to form a storage space, the storage space and the concrete foundation are integrated, and the side surface is surrounded by a water shielding sheet to form a side surface water shielding sheet, the side surface water shielding sheet and the bottom surface water shielding sheet, In the storage tank for rainwater and the like integrated with the rainwater, the rainwater or the like is provided with a mold having a smooth surface to prevent contact between the edge of the concrete foundation and the water shielding sheet .
Covering both the concrete foundation and the storage space with a water-impervious sheet increases the weight of the storage tank to prevent buoyancy, uses a formwork with a smooth surface at the edge of the concrete foundation, and prevents the corners and the corners of the concrete foundation from being blocked. By preventing contact with the water sheet, breakage of the water shielding sheet was prevented and the protection of the function as a storage tank was strengthened.
本発明は、コンクリート基礎と貯留空間の両方を遮水シートで覆うことで貯留槽の重量を増加し、かつコンクリート打設時に表面の滑らかな部材を使用することでコンクリート基礎面縁部と遮水シートとの接触を防止したため以下の効果がある。(1)コンクリート基礎の重量が貯留槽の重量に加わり浮力に対する抵抗が増大する。(2)遮水シートとコンクリート基礎との接触を防止したため遮水シートがコンクリート基礎の縁部により破損することを防止する。 The present invention increases the weight of the storage tank by covering both the concrete foundation and the storage space with a water-impervious sheet, and uses a smooth surface member when placing the concrete to prevent the concrete foundation surface edge and the water-impervious surface. Since the contact with the sheet is prevented, the following effects are obtained. (1) The weight of the concrete foundation is added to the weight of the storage tank, and resistance to buoyancy increases. (2) Since the contact between the impermeable sheet and the concrete foundation is prevented, the impermeable sheet is prevented from being damaged by the edge of the concrete foundation.
以下本発明を図により詳細に説明する。
図1は、本発明の遮水シートとコンクリート基礎縁部との接触を防止した貯留槽の概念図である。図1に示すとおり、本貯留槽は、地表面を掘削した凹部に設けたものであり、(1)凹部底部に遮水シートを敷設する。(2)遮水シート上にコンクリート基礎を打設する。(3)図4に示すような樹脂製あるいは金属製の単位部材を地下に配列し、雨水等を貯留する貯留空間を形成する。(4)貯留空間の少なくとも側面を遮水シートで覆う。(5)底面の遮水シートと側面の遮水シートを一体化する。さらに、(6)コンクリート基礎の縁部と遮水シートが直接接触することを防止するため、コンクリート基礎の縁部は表面が滑らかな型枠を使用している。こうすることで遮水シートはコンクリート基礎の縁部鋭角部と接触しない。
Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a conceptual diagram of a storage tank in which contact between the water-impervious sheet of the present invention and a concrete foundation edge is prevented. As shown in FIG. 1, this storage tank is provided in a recess excavated from the ground surface, and (1) a water shielding sheet is laid on the bottom of the recess. (2) Placing a concrete foundation on the waterproof sheet. (3) Resin or metal unit members as shown in FIG. 4 are arranged underground to form a storage space for storing rainwater and the like. (4) Cover at least the side surface of the storage space with a water shielding sheet. (5) Integrate the bottom water shielding sheet and the side water shielding sheet. Further, (6) In order to prevent the edge of the concrete foundation and the water shielding sheet from coming into direct contact, the edge of the concrete foundation uses a formwork having a smooth surface. By doing so, the water-impervious sheet does not come into contact with the sharp edge of the edge of the concrete foundation.
遮水シートを敷設し、その上にコンクリート基礎を打設することで、単位部材を配列する面を平坦とし、その配列を容易とする。さらにコンクリート基礎と貯留空間を一体として遮水シートで覆うことで、貯留槽の見かけの重量はコンクリート基礎を含むものとなる。その結果貯留槽の重量が増加し、その分貯留槽の外部に地下水が上昇してきた場合でもその浮力に対して耐えるようになる。 By laying a water-impervious sheet and placing a concrete foundation thereon, the surface on which the unit members are arranged is made flat, and the arrangement is facilitated. Furthermore, by covering the concrete foundation and the storage space together with a water shielding sheet, the apparent weight of the storage tank includes the concrete foundation. As a result, the weight of the storage tank increases, and even when the groundwater rises to the outside of the storage tank, it can withstand the buoyancy.
遮水シートは一般的にゴム製、塩化ビニール製などであって、角の鋭い礫などに接触すると切れ、貯留槽としての機能が発揮できなくなる。これは、礫に限らずコンクリートの角などでも同様である。 The water-impervious sheet is generally made of rubber, vinyl chloride or the like, and when it comes into contact with gravel with a sharp corner, it cannot function as a storage tank. The same applies to corners of concrete as well as gravel.
図2は、コンクリート基礎を形成する際に使用する型枠とそのコンクリートの打設手順を示している。遮水シートを敷設し、その上に必要に応じて平らな樹脂製などの板を敷き、コンクリートを打設する。このコンクリートの打設の際、特にそのコンクリート基礎の縁部が貯留空間に向かって立ち上がる遮水シートと接触することを防止することが重要である。そのため図に示すように平坦な板部とその端部が樋状になった型枠をコンクリート基礎の縁部に配置し、まず平坦な板の上に打設し、型枠をその重量で移動しないよう固定し、樋部に打設する。
遮水シートと接する型枠部の表面が滑らかであることが要求され型枠の形状は本例に限るものではない。
FIG. 2 shows a mold used for forming a concrete foundation and a procedure for placing the concrete. Lay a water-impervious sheet, and lay a flat resin plate on top of it as needed, and place concrete. When placing the concrete, it is particularly important to prevent the edge of the concrete foundation from coming into contact with the water shielding sheet rising toward the storage space. Therefore, as shown in the figure, a flat plate part and a formwork with its edges shaped like bowls are placed on the edge of the concrete foundation, and first placed on the flat board, and the formwork is moved by its weight Fix so that it does not, and place it in the buttocks.
The surface of the mold part in contact with the water-impervious sheet is required to be smooth, and the shape of the mold is not limited to this example.
上記貯留空間を形成するための単位部材は図4に示すものなどが利用可能である。上記貯留空間を遮水シートで覆い貯留槽とし、埋め戻し、必要に応じて泥だめ枡、流入管、流出管、オリフィスマス等を設け雨水の流出抑制あるいは有効利用に使用することは従来の貯留槽と同様である。 As the unit members for forming the storage space, those shown in FIG. 4 can be used. The above storage space is covered with a water shielding sheet to form a storage tank, backfilled, and if necessary, mud tanks, inflow pipes, outflow pipes, orifice mass, etc. are provided for use in rainwater outflow suppression or effective use. It is the same as the tank.
図5に示すような雨水等の流出抑制あるいは有効利用のための槽として利用可能である。 It can be used as a tank for suppressing or effectively using outflow of rainwater or the like as shown in FIG.
1 貯留空間
2 コンクリート基礎
3 遮水シート
4 型枠
1 Storage space 2 Concrete foundation 3 Water-impervious sheet 4 Formwork
Claims (1)
The ground surface is dug down, and a water-impervious sheet is laid on the bottom surface of the formed recess to form a bottom water-impervious sheet. A concrete foundation is formed on the bottom water-impervious sheet surface to form a concrete foundation. The storage space is formed by arranging the unit members, the storage space and the concrete foundation are integrated, and the side surface is surrounded by a water shielding sheet to form a side water shielding sheet, and the side water shielding sheet and the bottom water shielding sheet are integrated. A storage tank for rainwater or the like in which a form having a smooth surface is disposed to prevent contact between the edge of the concrete foundation and the water shielding sheet in the storage tank for rainwater or the like .
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JP2010240423A JP5742047B2 (en) | 2010-10-27 | 2010-10-27 | A storage tank that prevents contact between the impervious sheet and the edge of the concrete foundation |
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JP2010240423A JP5742047B2 (en) | 2010-10-27 | 2010-10-27 | A storage tank that prevents contact between the impervious sheet and the edge of the concrete foundation |
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JP5742047B2 true JP5742047B2 (en) | 2015-07-01 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP3164988B2 (en) * | 1994-12-28 | 2001-05-14 | 大林道路株式会社 | Underground water storage structure |
JP4437181B2 (en) * | 2000-10-05 | 2010-03-24 | 慎一郎 林 | Water storage device |
JP5140384B2 (en) * | 2007-11-08 | 2013-02-06 | 積水化成品工業株式会社 | Rainwater storage device and its construction method |
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