JP5240790B2 - Dam lake low-level water discharge device - Google Patents
Dam lake low-level water discharge device Download PDFInfo
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- JP5240790B2 JP5240790B2 JP2009286923A JP2009286923A JP5240790B2 JP 5240790 B2 JP5240790 B2 JP 5240790B2 JP 2009286923 A JP2009286923 A JP 2009286923A JP 2009286923 A JP2009286923 A JP 2009286923A JP 5240790 B2 JP5240790 B2 JP 5240790B2
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- low
- water
- dam lake
- water discharge
- dam
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Description
この発明は、ダム湖低層水排出装置に関する。 The present invention relates to a dam lake low-level water discharge device.
従来、小規模なダムには低層水を排出する仕組みは組み込まれていない。大規模なダムでは、低水放流設備が設けられているものもある。 Traditionally, small dams have no built-in mechanism for discharging low-rise water. Some large dams have low water discharge facilities.
ダム湖の低層においては、水が循環せず長期間滞留し、水温が低下するとともに貧酸素状態となっている。低水放流設備が設けられている場合であっても、取水口より下の層の水は排出できないため、低水放流設備がないダムの状況と大差ない。このため、ダム湖全域の水質悪化の原因となっているとともに生態系にも悪影響を与えている。 In the low level of the dam lake, water does not circulate and stays for a long time, and the water temperature decreases and is in an anoxic state. Even if low water discharge facilities are provided, the water below the intake cannot be discharged, so it is not much different from the situation of dams that do not have low water discharge facilities. For this reason, it causes water quality deterioration throughout the dam lake and adversely affects the ecosystem.
本発明は、簡易な構造でダム湖低層水を排出する装置を実現することを目的としている。 An object of the present invention is to realize an apparatus for discharging low-level water from a dam lake with a simple structure.
本発明のダム湖低層水排出装置は、ダム堤体に堤頂とダム湖側側面につながる空洞を設け、その空洞のダム湖側側面の開口部にパイプを接続し、パイプのもう一つの端を取水したい位置に設置し、該空洞の堤頂側の開口部である低層水排出口の上流側に、水流が低層水排出口を覆う円弧を描いて流れるように水流を上方に曲げるための突起を設ける構成とした。 The dam lake low-level water discharge device according to the present invention has a cavity connected to the top of the dam and the side surface on the dam lake side in the dam body, and a pipe is connected to the opening on the side surface on the dam lake side of the dam body. The water flow is bent upward so that the water flows in an arc covering the low water outlet on the upstream side of the low water outlet, which is an opening on the bank top side of the cavity. Protrusions were provided.
本発明のダム湖低層水排出装置は、主放流水の流れのエネルギーによって低層水を汲み上げて排出するものであり、放流が行われている間は常に低層水が排出される。 The dam lake low-level water discharge device of the present invention pumps and discharges low-level water by the energy of the flow of main discharge water, and low-level water is always discharged while discharge is performed.
本発明のダム湖低層水排出装置は、低層水が主放流水に希釈されて排出されるため、放流水の温度低下はわずかである。 In the dam lake low-level water discharge device of the present invention, the low-level water is diluted with the main discharge water and discharged, so the temperature drop of the discharge water is slight.
本発明のダム湖低層水排出装置は、低層水吸入口を任意の位置に設置することができる。 In the dam lake low-level water discharge device of the present invention, the low-level water inlet can be installed at an arbitrary position.
以下、本発明のダム湖低層水排出装置の実施の形態を実施例により説明する。 Embodiments of the dam lake low-level water discharge apparatus according to the present invention will be described below by way of examples.
図１及び図２は、本発明のダム湖低層水排出装置の実施例を示す側面断面図である。 FIG.1 and FIG.2 is side sectional drawing which shows the Example of the dam lake low-rise water discharge apparatus of this invention.
ダム堤頂を流下する水流は、突起７のために上方に曲げられ円弧を描いて流れ、突起７の下流側の当該円弧の中心に近い部分、すなわち低層水排出管につながる部分で流線曲率の定理により水圧が低くなり低層水排出管から水が汲み上げられ放流水とともに流下していく。 The water flow flowing down the dam top is bent upward for the projection 7 and flows in an arc, and the streamline curvature is in a portion near the center of the arc on the downstream side of the projection 7, that is, a portion connected to the low-level water discharge pipe. According to the theorem, the water pressure is lowered and water is pumped from the low-level water discharge pipe and flows down with the discharged water.
１ 地盤
２ ダム堤体
３ ダム湖
４ 低層水排出管
５ 低層水排出口
６ 低層水吸入口
７ 突起
DESCRIPTION OF SYMBOLS 1 Ground 2 Dam body 3 Dam lake 4 Low water discharge pipe 5 Low water discharge 6 Low water intake 7 Projection
Claims (1)
A cavity connected to the dam top and the side of the dam lake is provided in the dam body, a pipe is connected to the opening on the side of the dam lake, and the other end of the pipe is installed at a position where water is desired. A dam lake characterized in that a protrusion is provided on the upstream side of the low water outlet, which is an opening on the bank top, to bend the water upward so that the water flows in an arc covering the low water outlet. Low water discharge device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009286923A JP5240790B2 (en) | 2009-11-26 | 2009-11-26 | Dam lake low-level water discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009286923A JP5240790B2 (en) | 2009-11-26 | 2009-11-26 | Dam lake low-level water discharge device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011111882A JP2011111882A (en) | 2011-06-09 |
| JP5240790B2 true JP5240790B2 (en) | 2013-07-17 |
Family
ID=44234427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009286923A Expired - Fee Related JP5240790B2 (en) | 2009-11-26 | 2009-11-26 | Dam lake low-level water discharge device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5240790B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102391090B1 (en) * | 2019-11-25 | 2022-04-27 | (주)친환경산업 | Movable weir for water quality improvement and remove floating matters |
| JP7642273B1 (en) * | 2024-10-28 | 2025-03-10 | 英世 村上 | Liquid transfer system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3316391B2 (en) * | 1996-09-12 | 2002-08-19 | 株式会社クボタ | Dam pumping equipment |
| JP3856371B2 (en) * | 2001-10-05 | 2006-12-13 | ケミカルグラウト株式会社 | Sediment removal equipment |
| JP3628302B2 (en) * | 2002-02-15 | 2005-03-09 | 株式会社渡辺コンサルタンツ | Sabo Dam |
-
2009
- 2009-11-26 JP JP2009286923A patent/JP5240790B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| JP2011111882A (en) | 2011-06-09 |
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