JP3665974B2 - Repair method for old open channel - Google Patents
Repair method for old open channel Download PDFInfo
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- JP3665974B2 JP3665974B2 JP25019095A JP25019095A JP3665974B2 JP 3665974 B2 JP3665974 B2 JP 3665974B2 JP 25019095 A JP25019095 A JP 25019095A JP 25019095 A JP25019095 A JP 25019095A JP 3665974 B2 JP3665974 B2 JP 3665974B2
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Description
【０００１】
【発明の属する技術分野】
本発明は、老朽化した開水路を休止することなく補修する方法に関するものである。
【０００２】
【従来の技術】
従来から上下水道、農業用水、工業用水、などを供給に開水路が使用されている。 これらの開水路は長年の使用によって内面が腐食して老朽化している場合がある。
その際に従来は水路の使用をいったん停止し、開水路の内面をドライな状態として清掃、補修、防食工事などを行っている。
【０００３】
【本発明が解決しようとする課題】
前記した従来の老朽開水路の補修方法にあっては、次のような問題点が存在する。
＜イ＞開水路の用途によっては給水を停止することができないものがあり、そのような場合には補修が困難であった。
＜ロ＞水路の供給を維持したまま補修を行うためには、補修箇所だけをその前後で締切り、上流の水をいったんポンプでくみ上げて下流側に放流するといった、バイパス工事が必要となり、きわめて不経済なものであった。
＜ハ＞それ以外にはダイバーが開水路内に潜水して破損箇所を探し出して補修する方法も一部で利用されているが、流速の大きい水路においては危険な作業であり、かつ水中作業であるために信頼性の低いものであった。
【０００４】
本発明は上記したような従来の問題を解決するためになされたもので、経済的に施工でき、かつ安全で信頼性の高い、老朽開水路の補修方法を提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記のような目的を達成するために、本発明の老朽開水路の補修方法は、耐摩耗性、耐腐食性に優れた材料で形成した補修板体を、通水中の開水路内に沈設し、開水路外からの作業により、この補修板体を水中で組み立て、補修板体の水上への露出部を開水路の壁面に固定することによって開水路の底面と壁面とを被覆し、これらの補修板体によって形成した新たな補修底面と補修壁面とを、開水路の底面と壁面とに取り付けて行う、老朽開水路の補修方法を特徴としたものである。
【０００６】
【本発明の実施の態様】
以下図面を参照しながら本発明の老朽開水路の補修方法の実施例について説明する。
【０００７】
＜イ＞補修板体
本発明の補修方法では、補修板体１を使用する。
この板体１は開水路２の寸法に併せてあらかじめ工場で生産された板状体であり、耐摩耗性、耐腐食性に優れ、できるだけ軽い材料で形成する。
例えば、鋼板、ＰＣ版、合成樹脂板、ポリマー含浸コンクリート板などを使用できる。
【０００８】
＜ロ＞補修板体１の組み立て構造
補修板体１は後述するように流水中で組み立てる。したがって複雑な作業は困難であるために例えば図２に示すような溝と突起の組み合わせるような簡単な構造を採用する。
すなわち、耐摩耗性、耐腐食性に優れた材料で形成した補修板体１の縁部に、凹凸の係合構造を採用して係合可能に構成する方法である。
あるいは補修板体１の縁部をヒンジで連結して折り畳み自在に構成することもできる。（図４）
開水路２の底面、壁面と、補修板体１との間に間隙を必要とする場合には、板体１の一面にスペーサとして突起を突設しておく場合もある。
【０００９】
＜ハ＞補修板体１の沈設
上記したような補修板体１を、使用中の開水路２の近くまで運搬し、クレーンによって開水路２内に沈設する。
実際には沈設する以前に開水路２内面の付着物などの清掃を行う場合もあるが不可欠の作業工程ではない。
【００１０】
＜ニ＞補修板体１の組み立て
沈設した補修板体１を水中で組み立てることによって開水路２の底面と壁面とを被覆する。
この組み立ては、例えば凹凸の係合構造を採用して補修板体１の相互を係合可能に構成してあれば、この補修板体１を係合部において組み立てることによって簡単に開水路２の底面と壁面とを被覆することができる。（図３）
あるいは補修板体１の相互をヒンジで連結して折り畳み自在に形成してあれば、水中において補修板体１をヒンジ部から起こして組み立てることによって開水路２の底面と壁面とを被覆することができる。（図５）
【００１１】
＜ホ＞補修板体１の取り付け
これらの補修板体１によって形成した新たな補修底板と補修壁板とを、開水路２の底面と壁面とに取り付ける。
この場合に相互に直接接触させて取り付ける場合もあるが、スペーサによって多少の間隔を設けて取り付ける場合もある。
取り付けるにはボルトなどの固定具３を使用するが、このような作業は板体１の水上への露出部で行えば簡単である。
【００１２】
＜ヘ＞間隙への充填
開水路２の外面と、補修板体１の裏面との間の間隙に、耐腐食材を注入、充填することもできる。
すると補修板体１の腐食を防止できるだけでなく、厚さの薄い補修板体１であっても、開水路２内の流体の圧力に容易に耐えることができる。
あるいは、開水路２の外面と、補修板体１の裏面との間の間隙に水などの流体を滞留させておく。
すると補修板体１の内外において水頭が同一となるから厚さの薄い補修板体１であっても、開水路２内の流体の圧力に容易に耐えることができる。
【００１３】
＜ト＞電気防食
補修板体１が金属製の板であった場合には、補修板体１に電気防食のための電流を流すこともできる。
すると長期間にわたって補修板体１の腐食を防止することができる。
【００１４】
【本発明の効果】
本発明の老朽開水路２の補修方法は以上説明したようになるから次のような効果を得ることができる。
＜イ＞開水路２において水路の用途を休止することなく、その水中内面の補修を行うことができる。
したがって開水路２を使用する住民や周辺の産業にまったく影響を与えることなく補修を完了することができる。
＜ロ＞補修板体１を水中に直接沈設し、水中で組み立てる方法である。
したがって従来のようにバイパスを設置するなどの大規模な仮設工事が不要でありきわて経済的である。
＜ハ＞補修板体１は工場で生産して現場へ運搬して使用できる。
したがって現場で行う補修工事、特に水中でダイバーが行う補修に比較して、良好な品質、正確な寸法の板体によって補修を行うことができ、半永久的な高い信頼性を得ることができる。
＜ニ＞水中での人力作業が不要であるから、ダイバーによって行う補修に比較して流速の大きい開水路２においても安全に施工することができる。
＜ホ＞薄い板体によって行う補修である。したがって開水路２の内部断面を減少することがなく、ほぼそれまでの流量を得ることができる。
【図面の簡単な説明】
【図１】本発明の老朽開水路２の補修方法の実施例の説明図
【図２】補修板体の組み立て状態の説明図
【図３】補修板体の組み立て状態の説明図
【図４】補修板体の組み立て状態の説明図
【図５】補修板体の組み立て状態の説明図[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for repairing an aged open channel without pausing.
[0002]
[Prior art]
Conventionally, open channels have been used to supply water and sewage, agricultural water, industrial water, and the like. These open channels may have become aging due to corrosion on the inner surface due to long-term use.
At that time, conventionally, the use of the water channel is temporarily stopped, and the inner surface of the open water channel is kept dry to perform cleaning, repair, anticorrosion work, and the like.
[0003]
[Problems to be solved by the present invention]
The above-described conventional repair method for an old open channel has the following problems.
<I> Some water supply channels cannot be used to stop water supply, and in such cases, repair is difficult.
<B> In order to perform repairs while maintaining the supply of the water channel, it is necessary to perform bypass work, such as shutting off only the repaired part before and after that, pumping up the upstream water and discharging it to the downstream side. It was economic.
<C> Other than that, divers dive into open channels to find damaged parts and repair them. However, this is a dangerous operation in a high-speed channel, and underwater work. Therefore, it was unreliable.
[0004]
The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a method for repairing an old open channel that can be economically constructed and is safe and reliable.
[0005]
[Means for Solving the Problems]
In order to achieve the above-described object, the repair method for an old open channel according to the present invention is a method in which a repair plate body made of a material having excellent wear resistance and corrosion resistance is set in an open channel for passing water. By assembling this repair plate body underwater by work from outside the open channel, and fixing the exposed portion of the repair plate body on the water to the wall surface of the open channel, the bottom surface and the wall surface of the open channel are covered. It is characterized by a repair method for an old open channel, in which a new repair bottom and a repair wall formed by a repair plate are attached to the bottom and the wall of the open channel.
[0006]
[Embodiments of the present invention]
Embodiments of the repair method for an old open channel according to the present invention will be described below with reference to the drawings.
[0007]
<A> Repair plate body The repair plate body 1 is used in the repair method of the present invention.
This plate body 1 is a plate-like body produced in advance in the factory in accordance with the dimensions of the
For example, a steel plate, a PC plate, a synthetic resin plate, a polymer-impregnated concrete plate, or the like can be used.
[0008]
<B> Assembly structure of the repair plate 1 The repair plate 1 is assembled in running water as will be described later. Therefore, since a complicated operation is difficult, a simple structure such as a combination of grooves and protrusions as shown in FIG. 2 is employed.
That is, it is a method of adopting an uneven engagement structure at the edge of the repair plate 1 formed of a material having excellent wear resistance and corrosion resistance so as to be engageable.
Or the edge part of the repair board 1 can also be connected with a hinge, and can also be comprised so that folding is possible. (Fig. 4)
When a gap is required between the bottom surface and the wall surface of the
[0009]
<C> Sedimentation of the repair plate 1 The repair plate 1 as described above is transported to the vicinity of the
Actually, the deposits on the inner surface of the
[0010]
<D> Assembly of repair plate body 1 The repaired plate body 1 that has been sunk is assembled in water to cover the bottom surface and the wall surface of the
For example, if the repair plate body 1 is configured to be able to engage with each other by adopting an uneven engagement structure, the assembly of the repair plate body 1 at the engagement portion makes it easy to assemble the
Alternatively, if the repair plate bodies 1 are connected to each other with hinges and are foldable, the repair plate body 1 is raised from the hinge portion and assembled in water to cover the bottom surface and the wall surface of the
[0011]
<E> Attaching the repair plate body 1 A new repair bottom plate and a repair wall plate formed by these repair plate bodies 1 are attached to the bottom surface and the wall surface of the
In this case, there are cases where they are attached in direct contact with each other, but there are also cases where they are attached with some space provided by spacers.
A
[0012]
<F> It is also possible to inject and fill a corrosion-resistant material into the gap between the outer surface of the filling
Then, not only can the corrosion of the repair plate 1 be prevented, but even the thin repair plate 1 can easily withstand the pressure of the fluid in the
Alternatively, a fluid such as water is retained in the gap between the outer surface of the
Then, since the water head is the same inside and outside the repair plate 1, even the thin repair plate 1 can easily withstand the pressure of the fluid in the
[0013]
<G> When the anticorrosion repair plate 1 is a metal plate, an electric current for cathodic protection can be passed through the repair plate 1.
Then, corrosion of the repair plate 1 can be prevented over a long period of time.
[0014]
[Effect of the present invention]
Since the repair method of the old
<I> The inner surface of the underwater can be repaired without suspending the use of the channel in the
Therefore, the repair can be completed without affecting the residents who use the
<B> A method in which the repair plate 1 is directly sunk in water and assembled in water.
Therefore, a large-scale temporary work such as installing a bypass as in the prior art is unnecessary and economical.
<C> The repair plate 1 can be produced at a factory and transported to the site for use.
Therefore, compared with repair work performed on site, particularly repairs performed by divers in water, repair can be performed with a plate body having good quality and accurate dimensions, and high semi-permanent reliability can be obtained.
<D> Since manual work in water is unnecessary, it can be safely constructed even in the
<E> Repair performed with a thin plate. Therefore, the flow rate up to that can be obtained without reducing the internal cross section of the
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an embodiment of a repair method for an aged
Claims (6)
開水路外からの作業により、この補修板体を水中で組み立て、補修板体の水上への露出部を開水路の壁面に固定し、開水路の底面と壁面とを被覆して行う、
老朽開水路の補修方法。A repair plate made of a material with excellent wear resistance and corrosion resistance is set in the open channel of the water flow,
By assembling this repair plate in water by working from outside the open channel , fixing the exposed portion of the repair plate on the water to the wall surface of the open channel, covering the bottom surface and the wall surface of the open channel,
How to repair an old open channel.
該補修板体の縁部に、凹凸の係合構造を採用して係合可能に構成しておき、
この補修板体を通水中の開水路内に沈設し、
この補修板体を係合部において組み立てることによって開水路の底面と壁面とを被覆して行う、
老朽開水路の補修方法。 A method for repairing an old open channel according to claim 1,
In the edge portion of the repair plate body, adopting an uneven engagement structure, it is configured to be engageable,
This repair plate is passed through an open channel in the water ,
Covering the bottom surface and wall surface of the open channel by assembling this repair plate at the engaging portion,
How to repair an old open channel.
該補修板体をヒンジで連結して折り畳み自在に形成しておき、
この折り畳み補修板体を通水中の開水路内に沈設し、
この補修板体をヒンジ部から起こして組み立てることによって開水路の底面と壁面とを被覆して行う、
老朽開水路の補修方法。 A method for repairing an old open channel according to claim 1,
The repair plate is connected with a hinge to be foldable,
This folding repair plate is set in an open channel underwater ,
Covering the bottom and wall of the open channel by assembling this repair plate from the hinge part,
How to repair an old open channel.
該開水路の底面あるいは壁面と、補修底面あるいは補修壁面との間の間隙に充填材を注入、充填して行う、
老朽開水路の補修方法。 A method for repairing an old open channel according to any one of claims 1 to 3,
Filling the gap between the bottom surface or wall surface of the open channel and the repair bottom surface or the repair wall surface, filling, filling,
How to repair an old open channel.
開水路の底面あるいは壁面と、補修底面あるいは補修壁面との間の間隙に滞留した流体を充填して行う、
老朽開水路の補修方法。 A method for repairing an old open channel according to any one of claims 1 to 3,
Filled with fluid staying in the gap between the bottom or wall of the open channel and the repair bottom or wall,
How to repair an old open channel.
該補修板体には金属材料を用い、補修板体には電気防食のための電流を流して行う、
老朽開水路の補修方法。 A method for repairing an old open channel according to any one of claims 1 to 5,
A metal material is used for the repair plate, and an electric current is applied to the repair plate for electric protection.
How to repair an old open channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25019095A JP3665974B2 (en) | 1995-09-04 | 1995-09-04 | Repair method for old open channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25019095A JP3665974B2 (en) | 1995-09-04 | 1995-09-04 | Repair method for old open channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0971921A JPH0971921A (en) | 1997-03-18 |
| JP3665974B2 true JP3665974B2 (en) | 2005-06-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25019095A Expired - Fee Related JP3665974B2 (en) | 1995-09-04 | 1995-09-04 | Repair method for old open channel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3665974B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5887627A (en) * | 1996-07-02 | 1999-03-30 | Taisei Corporation | Method for reconstructing corroded pipes |
| JP3816989B2 (en) * | 1996-08-09 | 2006-08-30 | 大成建設株式会社 | Multiple pipe construction method |
| JP4844863B2 (en) * | 2003-10-16 | 2011-12-28 | 独立行政法人農業・食品産業技術総合研究機構 | Rehabilitation structure of waterway and its construction method |
| JP4812451B2 (en) * | 2006-02-08 | 2011-11-09 | 住友大阪セメント株式会社 | Waterway repair method |
| KR101112218B1 (en) * | 2011-07-12 | 2012-03-13 | 리플래시기술 주식회사 | Method for repairing of concrete aqueduct bridges using plastic |
| CN114150633B (en) * | 2021-11-15 | 2023-07-25 | 中国建筑第八工程局有限公司 | Irrigation ditch connection seepage-proofing structure for farmland improvement |
-
1995
- 1995-09-04 JP JP25019095A patent/JP3665974B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JPH0971921A (en) | 1997-03-18 |
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