JPS6217209A - Fish path construction - Google Patents
Fish path constructionInfo
- Publication number
- JPS6217209A JPS6217209A JP60155052A JP15505285A JPS6217209A JP S6217209 A JPS6217209 A JP S6217209A JP 60155052 A JP60155052 A JP 60155052A JP 15505285 A JP15505285 A JP 15505285A JP S6217209 A JPS6217209 A JP S6217209A
- Authority
- JP
- Japan
- Prior art keywords
- weir
- downstream side
- upstream
- sweetfish
- movable
- 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.)
- Pending
Links
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
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/60—Ecological corridors or buffer zones
Landscapes
- Barrages (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は魚道構造に係るものである。[Detailed description of the invention] (Industrial application field) The present invention relates to a fishway structure.
（従来の技術）
第１３図乃至第１５図は従来の魚道ゲートを示し、転倒
式可動堰（、）が階段状に配設されている。５図中（＆
）は可動堰の駆動軸、（１）ａ軸受、（ｄ）は駆動用シ
リンダー、（＃）は下流側の各転倒式可動堰（α）の回
転軸、（１）は前記各可動堰（α）の連結バーである。(Prior Art) Figs. 13 to 15 show a conventional fishway gate, in which overturnable movable weirs (,) are arranged in a step-like manner. In Figure 5 (&
) is the drive shaft of the movable weir, (1) a bearing, (d) is the drive cylinder, (#) is the rotation axis of each downstream movable weir (α), (1) is each movable weir ( α) is the connecting bar.
（発明が解決しようとする問題点）
前記従来の魚道構造においては、転倒式可動堰（ａ）を
越流する水は噴流状態となって跳躍し、湾状になって下
流に流下する。(Problems to be Solved by the Invention) In the conventional fishway structure, the water that overflows the overturning movable weir (a) jumps in a jet state and flows downstream in a bay shape.
この場合−流下する水の勢が大きいし、また流下する水
流の下部における上流側部分は第１４図の（ｇ）に示す
ように常に空洞であるため、遡上する鮎は水の中を泳い
で登ることができないので流下する水に向って飛び跳ね
るが、当該場所でほぼ垂直に跳ねているだけで、可動堰
の越流部よシ上流へはなかなか到達することができない
。このため鮎の遡上効率は非常に悪くなっている。In this case, the force of the flowing water is large, and the upstream part of the lower part of the flowing water is always hollow, as shown in Figure 14 (g), so the sweetfish swimming upstream cannot swim in the water. Since they are unable to climb up, they jump towards the flowing water, but they are only jumping almost vertically at that point, making it difficult for them to reach upstream from the overflow part of the movable weir. As a result, the efficiency of ayu migration upstream has become extremely poor.
また河川を降下する稚鮎は評化後における淡水域での生
息時間（絶食時間）はおおむね３日乃至４日であ〕、こ
の間に海へ流下する。しかしながら稚鮎は落下衝撃、振
動衝撃等の物理的衝撃を受けた場合の死亡率は可成シ高
いといわれている。In addition, young sweetfish that descend down rivers live in fresh water (fasting time) for about 3 to 4 days after being anaerobized, and during this time they flow down to the sea. However, it is said that young sweetfish have a fairly high mortality rate when subjected to physical shocks such as falling shock and vibration shock.
このようなことから、従来の魚道構造は降下稚鮎に対し
て可成シ大きな悪影響を及ぼすものと推定される。For these reasons, it is estimated that the conventional fish ladder structure has a significant negative impact on descending young sweetfish.
（問題点を解決するための手段）
本発明はこのような問題点を解決するために提案された
もので、堰の下流側に常に鮎の遡上に適するように設定
された傾斜角を保つ水流案内面を設けることともに、同
水流案内面の下端部が、前記堰の下流側の堰の越流天端
部よ）低い個所に位置するように構成してなることを特
徴とする魚道構造に係るものである。(Means for Solving the Problems) The present invention was proposed to solve these problems, and the present invention always maintains a slope angle suitable for the upstream movement of sweetfish on the downstream side of the weir. A fishway structure characterized in that a water flow guide surface is provided, and the lower end of the water flow guide surface is located at a lower point (than the overflow crest of the weir on the downstream side of the weir). This is related to.
（作用）
本発明に係る魚道構造においては、堰の下流側に常に鮎
の遡上に適するように設定された傾斜角を保つ水流案内
面が設けられるとともに、同水流案内面の下端部が下流
側の堰の越流天端部よシ低い位置に位置しているので、
前記堰の越流水は前記水流案内面に沿って流れる緩射流
となって円滑に下流側に導かれるものである。(Function) In the fishway structure according to the present invention, a water flow guide surface is provided on the downstream side of the weir that always maintains an inclination angle set to be suitable for ayu to swim upstream, and the lower end of the water flow guide surface is located downstream of the weir. Because it is located at a lower position than the top of the overflow of the side weir,
The overflow water of the weir becomes a slow jet flowing along the water flow guide surface and is smoothly guided downstream.
（発明の効果）
このように本発明に係る魚道構造によれば、堰の越流水
は前記案内面に沿って流れる緩射流となって円滑に下流
側に円滑に導かれるので、鮎の遡上を妨げることがなく
、鮎の遡上率を向上することができるのみならず、稚鮎
の降下時における稚鮎に対する物理的衝撃を緩和するこ
とができる。(Effects of the Invention) As described above, according to the fishway structure according to the present invention, overflow water of the weir becomes a slow flow flowing along the guide surface and is smoothly guided to the downstream side, so that the ayu can move upstream. Not only can the swimming rate of the sweetfish be improved without hindering the flow of the sweetfish, but also the physical impact on the young sweetfish when they descend can be alleviated.
（実施例） 以下本発明を図示の実施例について説明する。(Example) The present invention will be described below with reference to the illustrated embodiments.
第１図乃至第５図に示す実施例において、（１）は河川
に上流側よシ下流側に亘って列設された転倒式可動堰で
、各可動堰は連結バー（２）によって連結されている。In the embodiment shown in FIGS. 1 to 5, (1) is an overturning movable weir installed in a row in a river from the upstream side to the downstream side, and each movable weir is connected by a connecting bar (2). ing.
（３）は最上流側の可動堰（１）の駆動軸、（４）は軸
受、（５）は駆動用シリンダ、（６）は下流側の可動堰
（１）の回転軸である。(3) is a drive shaft of the movable weir (1) on the most upstream side, (4) is a bearing, (5) is a driving cylinder, and (6) is a rotating shaft of the movable weir (1) on the downstream side.
前記可動堰（１）の先端には水流案内板（７）が枢支（
８）され、鮎の遡上において妥当とされている転倒式可
動堰（１）間の落差（０，２５ｍ ）の間において、上
流側の水流案内板（７）の下端レベルＰは下流側の可動
堰（１）の越流天端部Ｑよシ低い所に位置するように構
成されている。なお水流案内板（７）の下端部にはロー
ラ（９）が軸支されている。A water flow guide plate (7) is pivotally supported at the tip of the movable weir (1).
8), and between the heads (0.25m) between the overturning movable weirs (1), which are considered appropriate for the upstream movement of sweetfish, the lower end level P of the water flow guide plate (7) on the upstream side is the same as that of the downstream side. It is configured to be located at a lower location than the overflow top end Q of the movable weir (1). Note that a roller (9) is pivotally supported at the lower end of the water flow guide plate (7).
更に可動堰（１）上端のアームａ＠と水路床面上のブラ
ケットα９とに亘ってリンク棒（１３の両端が枢支ａ３
ａａされている。Furthermore, both ends of the link rod (13 are attached to the pivot a3
It has been aa.
更に前記アームα〔と水流案内板（７）のブラケットａ
９との間にはテンションロッド（ＩＱの両端が枢支住η
α梯され、同枢軸０団はブラケットα９の長溝孔α優に
可摺動的に遊嵌している。Furthermore, the arm α [and the bracket a of the water flow guide plate (7)]
9, there is a tension rod (both ends of IQ are pivot points)
The shaft group 0 is slidably and loosely fitted into the long groove hole α of the bracket α9.
而して前記可動堰（１１が水位調節に必要な可動範囲に
おいては、可動堰（１）とリンク棒αａと支点（８）（
ＩＩ。In the movable range where the movable weir (11) is necessary for water level adjustment, the movable weir (1), the link rod αa, and the fulcrum (8) (
II.
（３）α→とで平行四辺形を形成することによってテン
ションロツ）”（１６）を介して水流案内板（７）は常
に鮎の遡上に適するように設定された傾斜角（θ□＝θ
２＝４５°）を保つ。同時に前述のように水流案内板（
７）の下面レベルが下流側の可動堰（１）の越流天端部
よシ低く位置するように構成されている。(3) By forming a parallelogram with α→, the water flow guide plate (7) is always set at an inclination angle (θ□= θ
2 = 45°). At the same time, as mentioned above, the water flow guide plate (
7) The lower surface level is located lower than the overflow top of the movable weir (1) on the downstream side.
また可動堰（１）が水位調節範囲を超えて同層（１）を
水平に倒伏する場合、ローラ（９）が水路床面に接触す
るとブラケットαつの長溝孔α９内をテンションロツ）
″（１６）の枢軸α印が遊動することによって、前記堰
（１）は水平になるまで倒伏されるものである。In addition, when the movable weir (1) exceeds the water level adjustment range and falls horizontally on the same layer (1), when the roller (9) comes into contact with the waterway floor, tension will be applied to the inside of the long groove hole α9 of the bracket α.
By the movement of the axis α mark (16), the weir (1) is lowered until it becomes horizontal.
図示の実施例は前記したように構成されているので、鮎
の遡上に適している転倒式可動堰間の落差の範囲内では
、常に同可動堰（１）の越流水は任意に設定された角度
（θ、＝０２）で以って水流案内板（７）に沿って緩射
流となって円滑に下流側に導かれるので、鮎の遡上を妨
げることがなく、鮎の遡上率を向上しうるものであシ、
また稚鮎の降下時における稚鮎に対する物理的衝撃を緩
和することができる。Since the illustrated embodiment is configured as described above, the overflow water of the movable weir (1) is always set arbitrarily within the range of the head difference between the movable weirs that are suitable for the upstream migration of sweetfish. With the angle (θ, = 02), the flow becomes a slow flow along the water flow guide plate (7) and is smoothly guided downstream, so it does not impede the upstream movement of the ayu and improves the rate of ayu. It is something that can improve
In addition, the physical impact on the young sweetfish when the young sweetfish descends can be alleviated.
、前記実施例によれば水位調節に必要な範囲は転倒式可
動堰（１）がどの位置においても；常に鮎の遡上に適す
るように設定された傾きを以って前記可動堰（１）から
の越流水を水流案内板（力によって緩射流にして流下さ
せることができるとともに、河川が低水位の場合には前
記可動堰（１）の扉体を水平にまで倒伏させることがで
きるものである。According to the above-mentioned embodiment, the range necessary for water level adjustment is the range in which the overturning type movable weir (1) is located; A water flow guide plate (which can be used to turn overflow water into a slow flow and flow down by force, and also to lower the door body of the movable weir (1) horizontally when the water level of the river is low) be.
第６図は本発明の他の実施例を示し、前記可動堰（１）
上端のアームα〔と水流案内板（７）のブラケット（Ｉ
［有］との間に、テンションロッド（Ｌｅの代ルにチェ
ーンまたはロープ（１６りを連結し、前記ブラケットａ
９に長溝孔を穿設する必要のないようにしたものである
。FIG. 6 shows another embodiment of the present invention, in which the movable weir (1)
Upper end arm α [and bracket (I) of water flow guide plate (7)
Connect a chain or rope (16) to the tension rod (in place of Le) and
This eliminates the need to drill a long slot in hole 9.
図中前記実施例と均等部分には同一符号が附されている
。In the figure, parts equivalent to those of the above embodiment are given the same reference numerals.
第７図及び第８図は本発明の他の実施例を示し、斜め上
下式可動堰が列設されている。FIGS. 7 and 8 show another embodiment of the present invention, in which diagonally up and down movable weirs are arranged in a row.
０１）は所定間隔毎に水路床に配設された傾斜案内筒で
、同各案内筒Ｑ１）に斜め上下式可動堰（２）が可摺動
的に嵌合され、同可動堰＠の上端内部と前記案内筒Ｑυ
に連通する水路床内の空窩（ハ）の底部との間に駆動用
シリンダ（財）が介装され、同シリンダＱ４を作動する
ことによって前記可動堰＠が前記案内筒ｃ！１）を案内
として斜め上下に移動するようになっている。図中（ハ
）はダストシールである。01) are inclined guide tubes arranged on the channel bed at predetermined intervals, and an oblique vertical movable weir (2) is slidably fitted into each guide tube Q1), and the upper end of the movable weir @ Inside and the guide tube Qυ
A driving cylinder is interposed between the bottom of the cavity (C) in the waterway bed communicating with C!, and by operating the cylinder Q4, the movable weir @ moves into the guide cylinder C! 1) is used as a guide to move diagonally up and down. In the figure (c) is a dust seal.
この際、前記可動堰（２）の越流水は、同可動堰翰の下
流側に形成された傾斜水流案内面（イ）に沿って緩徐に
流下して下流側の水流に導かれるものである。At this time, the overflow water of the movable weir (2) slowly flows down along the inclined water flow guide surface (a) formed on the downstream side of the movable weir and is guided to the downstream water flow. .
第９図及び第１０図は本発明の他の実施例を示し、前記
第７図及び第８図に示す実施例における斜め上下式可動
堰の代シに垂直上下式可動堰＜’ｚｌ＞が水路床に設け
られた垂直案内筒（２１り可摺動的に嵌合され、前記可
動堰ぼ）の頂部内面と、水路床に設けた空窩（ハ）底部
との間に駆動用シリンダ（財）が介装されている。図中
（ハ）はダストシールである。FIGS. 9 and 10 show another embodiment of the present invention, in which a vertically up-and-down movable weir <'zl> is used in place of the diagonal up-and-down movable weir in the embodiment shown in FIGS. 7 and 8. A driving cylinder (21) is installed between the top inner surface of the vertical guide cylinder (21 is slidably fitted and said movable weir) provided on the waterway bed and the bottom of the cavity (c) provided on the waterway bed. goods) are interposed. In the figure (c) is a dust seal.
而して前記可動堰■Ｏの頂面下流側に傾斜した水流案内
面（イ）が形成され、同水流案内面（ハ）の下端部しは
ルＰは下流側の可動堰ば）の越流天端部Ｑ ・よシ低
ぐ位置している。As a result, a water flow guide surface (A) is formed which is inclined downstream of the top surface of the movable weir (O), and the lower end of the water flow guide surface (C) is formed so that the lower end of the water flow guide surface (C) is an overflow of the movable weir on the downstream side. Stream end Q ・It is located very low.
従って前記可動堰（（９）の越流水は前記水流案内面（
ハ）に沿って緩徐に流下して、下流側の水流に円滑に導
かれるようになっている。Therefore, the overflow water of the movable weir ((9) is transferred to the water flow guide surface (
(c), so that it flows slowly down and is smoothly guided by the water flow on the downstream side.
第１１図及び第１２図は本発明の更に他の実施例を示し
、水路床上に所定間隔毎に固定堰０１）が列設され、同
各固定堰０１）の頂面下流側には傾斜した水流案内面０
３が形成され、同水流案内面（３２の下端部しはルＰは
下流側の固定堰ＯＤの越流天端部Ｑよシ低く位置してい
て、各固定堰６υの越流水は前記水流案内面Ｃ３２に沿
って緩徐に流下して、下流側の水流に円滑に導かれるよ
うになっている。Figures 11 and 12 show still another embodiment of the present invention, in which fixed weirs 01) are arranged in a row at predetermined intervals on the waterway bed, and the top surface of each fixed weir 01) is sloped on the downstream side. Water flow guide surface 0
3 is formed, and the water flow guide surface (32's lower end P is located lower than the overflow top Q of the fixed weir OD on the downstream side, and the overflow water of each fixed weir 6υ is It flows slowly down along the guide surface C32 and is smoothly guided by the water flow on the downstream side.
このように前記各実施例によれば可動堰（１） （２’
３（２２’）ｔたは固定堰０１）の越流水は水流案内板
（７）、本流案内面＠（至）に沿って流れる緩射流とな
って下流側に円滑に導かれ、鮎の遡上を妨げることがな
く、また稚鮎の降下時において同稚鮎に対する物理的衝
撃を緩和しうるものである。As described above, according to each of the above embodiments, the movable weir (1) (2'
The overflow water from 3 (22')t or fixed weir 01) becomes a slow flow that flows along the water flow guide plate (7) and the main stream guide surface @ (to) and is smoothly guided downstream, allowing the ayu to swim upstream. It does not obstruct the top of the young sweetfish, and can also alleviate the physical impact on the young sweetfish when they descend.
以上本発明を実施例について説明したが、本発明は勿論
このような実施例にだけ局限されるものではなく、本発
明の精神を逸脱しない範囲内で種々の設計の改変を施し
うるものである。Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various ways without departing from the spirit of the present invention. .
第１図は本発明に係る魚道構造の一実施例を示す縦断側
面図、第２図は第１図の矢視■−■図、第３図はその平
面図、第４図はその転倒式可動堰部の縦断側面図、第５
図はその越流部の縦断側面図、第６図は本発明の他の実
施例における転倒式可動堰の縦断側面図、第７図は本発
明の他の実施例を示す縦断側面図、第８図は第７図の矢
視■−■図、第９図は本発明の他の実施例を示す縦断側
面図、第１０図は第９図の矢視Ｘ−Ｘ図、第１１図は本
発明の更に他の実施例を示す縦断側面図、第１２図は第
１１図の矢視ｍ−Ｘ［［図、第１３図は従来の魚道構造
の縦断側面図、第１４図は第１３図の矢視Ｘ−Ｘ図、第
１５図はその越流部の縦断側面図である。Fig. 1 is a vertical sectional side view showing one embodiment of the fishway structure according to the present invention, Fig. 2 is a view taken along the arrows in Fig. 1, Fig. 3 is a plan view thereof, and Fig. 4 is its overturning type. Vertical side view of the movable dam part, No. 5
Figure 6 is a vertical side view of the overflow part, Figure 6 is a vertical side view of an overturning type movable weir in another embodiment of the present invention, and Figure 7 is a vertical side view of another embodiment of the present invention. 8 is a view taken along arrows ■--■ in FIG. 7, FIG. 9 is a vertical sectional side view showing another embodiment of the present invention, FIG. 10 is a view taken along arrows XX in FIG. 9, and FIG. 12 is a vertical side view showing still another embodiment of the present invention, FIG. 12 is a vertical side view taken along arrow m-X in FIG. The arrow XX view in the figure and FIG. 15 are longitudinal sectional side views of the overflow portion.
Claims (1)
斜角を保つ水流案内面を設けるとともに、同水流案内面
の下端部が、前記堰の下流側の堰の越流天端部より低い
個所に位置するように構成してなることを特徴とする魚
道構造。A water flow guide surface is provided on the downstream side of the weir that always maintains an inclination angle set to be suitable for ayu to swim upstream, and the lower end of the water flow guide surface is located at the overflow crest of the weir on the downstream side of the weir. A fishway structure characterized by being configured to be located at a lower location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60155052A JPS6217209A (en) | 1985-07-16 | 1985-07-16 | Fish path construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60155052A JPS6217209A (en) | 1985-07-16 | 1985-07-16 | Fish path construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6217209A true JPS6217209A (en) | 1987-01-26 |
Family
ID=15597617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60155052A Pending JPS6217209A (en) | 1985-07-16 | 1985-07-16 | Fish path construction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6217209A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0369027U (en) * | 1989-11-10 | 1991-07-09 | ||
| KR101069389B1 (en) * | 2011-01-19 | 2011-10-04 | 일성보산업(주) | Dock type fish way |
-
1985
- 1985-07-16 JP JP60155052A patent/JPS6217209A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0369027U (en) * | 1989-11-10 | 1991-07-09 | ||
| KR101069389B1 (en) * | 2011-01-19 | 2011-10-04 | 일성보산업(주) | Dock type fish way |
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