JP2561965B2 - Water tank for agricultural water - Google Patents
Water tank for agricultural waterInfo
- Publication number
- JP2561965B2 JP2561965B2 JP2044750A JP4475090A JP2561965B2 JP 2561965 B2 JP2561965 B2 JP 2561965B2 JP 2044750 A JP2044750 A JP 2044750A JP 4475090 A JP4475090 A JP 4475090A JP 2561965 B2 JP2561965 B2 JP 2561965B2
- Authority
- JP
- Japan
- Prior art keywords
- wall panel
- water
- buffer layer
- layer
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は雑用水や畑地灌漑用水などの農業用水を貯
水する貯水槽に関する。TECHNICAL FIELD The present invention relates to a water tank for storing agricultural water such as miscellaneous water and upland irrigation water.
近年、畑地灌漑用水などの貯水槽は、その品質の均等
性、耐久性、施工の迅速性、軽量化などの点で優れたプ
レストレスト構造のものが多くなっている。2. Description of the Related Art In recent years, water tanks for field irrigation water and the like are often of a prestressed structure that is excellent in terms of quality uniformity, durability, speed of construction, and weight reduction.
しかし、従来の工法によるプレストレスト構造の貯水
槽はコスト高となることから、3000m3以下程度の小形貯
水槽は低コストのRC構造のものが多い。ところが、RC構
造は乾燥収縮によるひび割れや、水密性が低下したり、
あるいは施工に手間がかかり、工期が長くなるなどの問
題があり、改善が求められている。However, the cost of conventional prestressed water tanks is high, so small water tanks of 3000 m 3 or less are often low cost RC structures. However, the RC structure has cracks due to drying shrinkage, water tightness decreases,
Alternatively, there is a problem that the construction takes time and the construction period becomes long, and improvement is required.
この発明は上記問題点に着目しなされたものである。
その目的は、プレストレスト構造の長所を受け継ぎ、工
期が短く、かつ、低コストで構築できる雑用水の貯水や
小形の灌漑池として好適な貯水槽を提案するにある。The present invention has been made in view of the above problems.
Its purpose is to propose a water storage tank that inherits the advantages of the prestressed structure, has a short construction period, and can be constructed at a low cost, and is suitable as a small-sized irrigation pond for storing miscellaneous water.
（課題を解決するための手段） この発明の農業用水用貯水槽は、（Ａ）上下端に内側
に張出したフランジを有し、円周方向に沿う複数段のシ
ース孔を有するプレキャストコンクリート製の一般壁パ
ネルをプレキャストコンクリート製の定着壁パネルを介
在させながら建て込み、前記シース孔に挿通したPC鋼線
により各壁パネルを円周方向にプレストレスを導入し緊
結して円筒形の外周壁体を構成し、（Ｂ）中央部に設け
た排泥ピットの周りに砂あるいは礫を敷均して下地緩衝
層を形成し、前記下地緩衝層の上にシート防水層を敷設
し、その端部を前記壁パネルの下端フランジの上面およ
び前記排泥ピット内面に固定して底部を構成し、（Ｃ）
下地緩衝層には槽外に連通するエア抜き管を埋設し、
（Ｄ）下地緩衝層の下層には槽外に連通する水抜ドレイ
ン管を埋設してなることを特徴とする。(Means for Solving the Problems) A water tank for agricultural water according to the present invention is made of (A) precast concrete having flanges projecting inward at the upper and lower ends and having a plurality of sheath holes along the circumferential direction. General wall panels are built up with interposition of precast concrete anchoring wall panels, and each steel wall panel is prestressed in the circumferential direction by PC steel wire inserted in the sheath hole, and tightly connected to form a cylindrical outer peripheral wall body. And (B) sand or gravel is spread around the sludge pit provided in the central part to form a base buffer layer, and a sheet waterproof layer is laid on the base buffer layer, and the end portion thereof is formed. Is fixed to the upper surface of the lower end flange of the wall panel and the inner surface of the sludge pit to form a bottom portion (C).
An air vent pipe that communicates with the outside of the tank is embedded in the base buffer layer,
(D) A drain drain pipe communicating with the outside of the tank is embedded in the lower layer of the base buffer layer.
この発明の要点は外周壁体をプレストレスト構造とし
てプレストレスト構造の長所を受け継ぐとともに、底部
はコンクリート製の底版に代えて下地緩衝層で支持され
たシート防水層とすることにより、工期の短縮、コスト
の低減を達成した点である。底部を下地緩衝層で支持さ
れたシート防水層とするため、シート防水層の浮き上が
り、膨れや剥がれを防止する必要があり、そのため、下
地緩衝層にはエア抜き管を埋設し、その下層には水抜ド
レイン管を埋設する。The gist of the present invention is that the outer peripheral wall body inherits the advantages of the prestressed structure as a prestressed structure, and the bottom part is a sheet waterproof layer supported by a base buffer layer instead of a concrete bottom plate, thereby shortening the construction period and cost. This is the point where reduction was achieved. In order to make the bottom part a sheet waterproof layer supported by an underlayer buffer layer, it is necessary to prevent the sheet waterproof layer from rising, swelling and peeling.Therefore, an air vent pipe is embedded in the underlayer buffer layer and the lower layer below it. Buried drain pipe.
（実施例） 以下、図示する実施例により説明する。第1,2,3図に
示す貯水槽は円筒形で下部は地中に埋設している。周囲
には断面が円弧状に湾曲し、上下端に内側に張出したフ
ランジを有するプレキャストコンクリート製の高さ3.2m
の一般壁パネル１が掘削地盤内に設けた基礎工２上に円
筒形状に建込まれている。建込まれた一般壁パネル１は
円周方向に連通する７段のPC鋼線用のシース孔３を有
し、このシース孔３に挿通したPC鋼線４に緊張力をか
け、建込んだ複数の壁パネル1,1に跨がり、円周方向の
プレストレストを導入して緊結し、外周壁体を構成して
いる。なお、第２図における壁パネル１′はPC鋼線４の
端を固定する定着部を備えた定着壁パネルであり円筒形
外周壁体の大きさに対応して４〜６個程度建て込まれ
る。一般壁パネル１の幅にもよるが、通常５〜10個の一
般壁パネル１に対して１個の定着壁パネル１′が使用さ
れる。(Example) Hereinafter, an example shown in the drawings will be described. The water tanks shown in Figs. 1, 2 and 3 are cylindrical and the lower part is buried underground. 3.2m high precast concrete with a circular arc-shaped cross section and flanges that project inward at the top and bottom
The general wall panel 1 is built in a cylindrical shape on the foundation work 2 provided in the excavated ground. The built-in general wall panel 1 has 7 stages of sheath holes 3 for PC steel wire that communicate with each other in the circumferential direction, and the PC steel wire 4 inserted in the sheath hole 3 was tensioned and installed. Straddling a plurality of wall panels 1, 1 and introducing prestressing in the circumferential direction to bond them together to form an outer peripheral wall body. The wall panel 1'in FIG. 2 is a fixing wall panel having a fixing portion for fixing the end of the PC steel wire 4, and about 4 to 6 pieces are built in according to the size of the cylindrical outer peripheral wall body. . Depending on the width of the general wall panel 1, usually one fixing wall panel 1'is used for every 5 to 10 general wall panels 1.
壁パネル1,1端面間の目地（厚さ20cm）には槽内外側
から厚み方向中央に向い、第３図のようにシリコン系シ
ーリング材５、水膨潤性ゴム材６、無収縮性グラウト材
７を多層に充填し、水密性が図られている。At the joint (thickness 20 cm) between the end faces of the wall panels 1 and 1, facing from the inside to the outside in the thickness direction, as shown in FIG. Watertightness is achieved by filling 7 in multiple layers.
この貯水槽の底部は、掘削した地山地盤８上に砂を敷
均して形成された厚さ20cmの下地砂層９からなる下地緩
衝層を設け、その上にEPDMゴム製厚さ1.5mmのシート防
水層10を敷設して構成されている。シート防水層10の外
側周縁は壁パネル１の下端に張出したフランジ11の上面
に接着すると共に、アンカーボルト12を締付けて固定し
てあり、内側周縁は排泥ピット13の内面に接着してあ
る。At the bottom of this water tank, a ground buffer layer consisting of a ground sand layer 9 having a thickness of 20 cm formed by laying sand on the excavated ground ground 8 is provided, and an EPDM rubber layer having a thickness of 1.5 mm is provided on the ground buffer layer. A sheet waterproof layer 10 is laid and configured. The outer peripheral edge of the waterproof sheet 10 is adhered to the upper surface of the flange 11 extending to the lower end of the wall panel 1, and the anchor bolt 12 is tightened and fixed, and the inner peripheral edge is adhered to the inner surface of the sludge pit 13. .
底部中央にはコンクリート製の排泥ピット13が設けて
あり、槽外に連通する排泥管14が連結してある。また、
下地砂層９の下層地盤８内には水抜ドレイン管15を埋設
してあり、貯水槽周辺の地下水の水位を低下させてあ
る。さらに、下地砂層９には多数の透孔が穿設してある
エア抜管16が埋設してあり、発生したガスを地上に放出
させる。なお、図示してないが水抜ドレイン管15の周囲
には下地砂層９に連続する砂層の溝が設けてあり、シー
ト防水層10下層の水は下地砂層９および周囲の砂層の溝
を水みちにして水抜ドレイン管15で集水し排出される。A drainage pit 13 made of concrete is provided in the center of the bottom, and a drainage pipe 14 communicating with the outside of the tank is connected. Also,
A drain drain pipe 15 is embedded in the lower ground 8 of the ground sand layer 9 to lower the water level of the ground water around the water tank. Further, an air vent pipe 16 having a large number of through holes is buried in the ground sand layer 9 to discharge the generated gas to the ground. Although not shown in the drawing, a groove of a sand layer continuous with the ground sand layer 9 is provided around the drainage drain pipe 15, and the water under the sheet waterproof layer 10 uses the grooves of the ground sand layer 9 and the surrounding sand layer as water. The drainage pipe 15 collects water and discharges it.
この貯水槽を構築するには円形に地山を掘削し、その
周縁に基礎工２をつくり、その上に一般壁パネル１およ
び定着壁パネル１′を建込む。建込んだ壁パネル1,1間
の目地に目地材を充填するとともに、数個の一般壁パネ
ル1,1間に跨がり、シース孔３内にPC鋼線４を挿通し、
これに緊張を加え、円周方向にプレストレスを導入し
て、壁パネル１を緊結し、PC鋼線４の両端を定着壁パネ
ル１′に定着して外周壁体を形成する。これと並行して
排泥ピット13、排泥管14、ドレイン管15およびエア抜管
16を配設するとともに、掘削地盤８上に下地砂層９を設
ける。下地砂層９を転圧した後に、シート防水層10を敷
設し、その周縁を壁パネル１の下端フランジ11上面およ
び排泥ピット13の内面に固定して底部を構成する。In order to construct this water storage tank, a ground is excavated in a circle, a foundation work 2 is formed on the periphery thereof, and a general wall panel 1 and a fixing wall panel 1'are built on it. The joint between the built-in wall panels 1 and 1 is filled with a joint material, and the PC steel wire 4 is inserted into the sheath hole 3 while straddling between several general wall panels 1 and 1.
Tension is applied to this to introduce a prestress in the circumferential direction to tightly bond the wall panel 1, and both ends of the PC steel wire 4 are fixed to the fixing wall panel 1'to form an outer peripheral wall body. In parallel with this, the mud pit 13, the mud pipe 14, the drain pipe 15 and the air vent pipe
16 is provided, and a ground sand layer 9 is provided on the excavated ground 8. After rolling the foundation sand layer 9, a sheet waterproof layer 10 is laid, and its peripheral edge is fixed to the upper surface of the lower end flange 11 of the wall panel 1 and the inner surface of the sludge pit 13 to form the bottom portion.
この実施例では下地緩衝層として下地砂層を用いた
が、これに限るものではない。下地緩衝層はその上に敷
説するシート防水層に損傷を与える突起等が発生せず、
容易に敷均して平坦な面を形成でき、衝撃を吸収してシ
ート防水層の破損を防止する保護機能を備え、かつ排
水、エア抜きのための通水、通気機能を有するものであ
り、砂層のほか、砂利層、砕石あるいは地山の砂質土等
砂あるいは礫を敷均して形成される。In this embodiment, the base sand layer was used as the base buffer layer, but the present invention is not limited to this. The base buffer layer does not have protrusions or the like that damage the waterproof sheet that is placed on it.
It can be laid easily to form a flat surface, has a protective function to absorb impact and prevent damage to the waterproof sheet, and also has drainage, water passage for bleeding air, and ventilation function, In addition to the sand layer, it is formed by laying gravel layer, crushed stone or sand or gravel such as sandy soil of the ground.
また、この実施例では、断面円弧状でシース孔３がそ
の円弧に沿って設けられている一般壁パネル１および定
着壁パネル１′を緊結して円筒形の外周壁体を形成した
が、断面台形状でシース孔３が円弧状に設けられている
一般壁パネル１および定着壁パネル１′を使用して緊結
し正多角筒形の外周壁体を形成してもよい。かかる正多
角形としては16角〜50角程度であり、シース孔３は円弧
状に連続しているので、プレストレスの導入には何ら障
害とはならない。Further, in this embodiment, the general wall panel 1 and the fixing wall panel 1'having the arcuate cross-section and the sheath holes 3 provided along the arc are tightly joined to form a cylindrical outer peripheral wall body. The regular wall panel 1 and the fixing wall panel 1 ′ each having a trapezoidal shape and provided with the sheath holes 3 in an arc shape may be tightly joined to form a regular polygonal cylindrical outer peripheral wall body. The regular polygon has about 16 to 50 angles, and since the sheath hole 3 is continuous in an arc shape, it does not hinder the introduction of prestress.
（作用） この貯水槽は以上の構成からなり、外周壁体はプレス
トレストコンクリート製の壁パネルを建込み、円周方向
にプレストレスを導入し緊結してなるので、コンクリー
トを打設し構築するものに比べ、作業性がよく、均質な
品質と高い強度が確保できる。また、亀裂等が起りがた
く、目地に充填するシーリング材と組合せ信頼性が高い
水密性とすることができる。底部は下地緩衝層の上にシ
ート防水層を敷設してなるので、コンクリートを打設す
る場合に比べ作業性が優れ、下地緩衝層はシート防水層
を保護するクッションとして作用し、シート防水層の破
損を防止する。実施例のように耐候性に優れ、かつ伸度
が大きいEPDMゴム等からなるシート防水層を用いると極
めて長期間の耐用ができる。また仮りに地盤に不等沈下
が発生しても、下地緩衝層のクッション作用とシート防
水層の伸びにより、地盤の不陸に追従し、損傷を回避す
ることができる。(Operation) This water tank has the above-mentioned structure, and the outer peripheral wall body is constructed by placing prestressed concrete wall panels and introducing prestress in the circumferential direction to bond them together. Compared with, workability is good, and uniform quality and high strength can be secured. In addition, cracks and the like are unlikely to occur, and a water-tightness that is highly reliable in combination with a sealing material that fills joints can be obtained. Since the bottom part is made by laying a sheet waterproof layer on the underlayer buffer layer, workability is better than when placing concrete.The underlayer buffer layer acts as a cushion to protect the sheet waterproof layer, Prevent damage. When a sheet waterproof layer made of EPDM rubber or the like, which has excellent weather resistance and a large elongation, is used as in the example, extremely long-term durability can be achieved. Even if uneven settlement occurs in the ground, the cushioning action of the underlayer cushioning layer and the extension of the sheet waterproof layer can follow the unevenness of the ground and prevent damage.
また、シート防水層より下の地下水やガスは下地緩衝
層を透過して、水抜ドレイン管やエア抜き管に集められ
て排出できるので、ガスや地下水の圧力によるシート防
水層の浮き上りや膨れ、剥がれが完全に防止され、安定
性が高い底部を形成できる。Also, groundwater and gas below the sheet waterproof layer permeate the base buffer layer and can be collected and discharged in the drain drain pipe or air vent pipe, so that the sheet waterproof layer rises or swells due to the pressure of gas or groundwater. Peeling is completely prevented and a highly stable bottom can be formed.
この発明は以上の通りであり、この貯水槽は強度、止
水性が優れ、長期間の耐用ができ、かつ、短い工期で低
コストで構築できる。The present invention is as described above, and this water storage tank has excellent strength and water blocking ability, can be used for a long period of time, and can be constructed at a low cost with a short construction period.
図面は実施例の貯水槽を示すものであって、第１図は縦
断面図、第２図は部分平面図、第３図は壁パネル目地部
の横断面図である。 １…一般壁パネル、１′…定着壁パネル、２…基礎工、
３…シース孔、４…PC鋼線、５…シリコン系シーリング
材、６…水膨潤性ゴム材、７…無収縮性グラウト、８…
地山地盤、９…下地砂層、10…シート防水層、11…壁パ
ネル下端フランジ、12…アンカーボルト、13…排泥ピッ
ト、14…排泥管、15…水抜ドレイン管、16…エア抜管。The drawings show a water tank of an embodiment, wherein FIG. 1 is a longitudinal sectional view, FIG. 2 is a partial plan view, and FIG. 3 is a lateral sectional view of a wall panel joint. 1 ... General wall panel, 1 '... Fixing wall panel, 2 ... Foundation work,
3 ... Sheath hole, 4 ... PC steel wire, 5 ... Silicone sealing material, 6 ... Water swelling rubber material, 7 ... Non-shrinkable grout, 8 ...
Rock ground, 9 ... Underlying sand layer, 10 ... Sheet waterproof layer, 11 ... Wall panel lower end flange, 12 ... Anchor bolt, 13 ... Mud pit, 14 ... Mud pipe, 15 ... Drainage drain pipe, 16 ... Air vent pipe.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｅ０４Ｈ 7/20 Ｅ０４Ｈ 7/20 Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI Technical display area E04H 7/20 E04H 7/20
Claims (1)
有し、円周方向に沿う複数段のシース孔を有するプレキ
ャストコンクリート製の一般壁パネルをプレキャストコ
ンクリート製の定着壁パネルを介在させながら建て込
み、前記シース孔に挿通したPC鋼線により各壁パネルを
円周方向にプレストレスを導入し緊結して円筒形の外周
壁体を構成し、（Ｂ）中央部に設けた排泥ピットの周り
に砂あるいは礫を敷均して下地緩衝層を形成し、前記下
地緩衝層の上にシート防水層を敷設し、その端部を前記
壁パネルの下端フランジの上面および前記排泥ピット内
面に固定して底部を構成し、（Ｃ）下地緩衝層には槽外
に連通するエア抜き管を埋設し、（Ｄ）下地緩衝層の下
層には槽外に連通する水抜ドレイン管を埋設してなるこ
とを特徴とする農業用水用貯水槽。(A) A general wall panel made of precast concrete having flanges projecting inwardly at the upper and lower ends and having a plurality of sheath holes along the circumferential direction with a fixing wall panel made of precast concrete interposed. While pre-stressing, each wall panel was circumferentially prestressed by PC steel wire inserted through the sheath hole and tightly bonded to form a cylindrical outer peripheral wall body. Sand or gravel is laid around the pit to form a base buffer layer, and a sheet waterproof layer is laid on the base buffer layer, the ends of which are the upper surface of the bottom flange of the wall panel and the sludge pit. It is fixed to the inner surface to form the bottom portion, (C) an air vent pipe communicating with the outside of the tank is buried in the base buffer layer, and (D) a drain drain pipe communicating with the outside of the tank is buried in the lower layer of the base buffer layer. Agriculture characterized by Water for the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2044750A JP2561965B2 (en) | 1990-02-26 | 1990-02-26 | Water tank for agricultural water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2044750A JP2561965B2 (en) | 1990-02-26 | 1990-02-26 | Water tank for agricultural water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03256889A JPH03256889A (en) | 1991-11-15 |
| JP2561965B2 true JP2561965B2 (en) | 1996-12-11 |
Family
ID=12700125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2044750A Expired - Fee Related JP2561965B2 (en) | 1990-02-26 | 1990-02-26 | Water tank for agricultural water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2561965B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100394435B1 (en) * | 2001-03-03 | 2003-08-14 | 변무원 | Structure for Installing Large Water |
| KR20020088568A (en) * | 2001-05-18 | 2002-11-29 | 한샘이앤지(주) | Wastewater disposal plant for oxidation ditch using oxidation ditch and method for constructing the same |
| KR100435146B1 (en) * | 2001-08-07 | 2004-06-14 | 대한민국 | Steel reinforced concrete plate and livestock liquid manure storage container assembled it |
| ES2212887B1 (en) * | 2002-05-17 | 2005-10-16 | Francisco J. Segovia Espiau | PROCEDURE FOR OBTAINING DEPOSITS OF GREAT CAPACITY AND PRODUCT OBTAINED. |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5320117A (en) * | 1976-08-07 | 1978-02-24 | Asahi Giken Kk | Waterrproofing process for tanks |
| JPS60161096U (en) * | 1984-03-31 | 1985-10-25 | 筒中シ−ト防水株式会社 | Equipment for removing infiltrated groundwater in heat storage tanks |
| JPS62174466A (en) * | 1986-01-25 | 1987-07-31 | 旭コンクリ−ト工業株式会社 | Method for assembling circular water tank |
-
1990
- 1990-02-26 JP JP2044750A patent/JP2561965B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03256889A (en) | 1991-11-15 |
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