JP2000144697A - Staircase type fish ladder facility - Google Patents
Staircase type fish ladder facilityInfo
- Publication number
- JP2000144697A JP2000144697A JP10327302A JP32730298A JP2000144697A JP 2000144697 A JP2000144697 A JP 2000144697A JP 10327302 A JP10327302 A JP 10327302A JP 32730298 A JP32730298 A JP 32730298A JP 2000144697 A JP2000144697 A JP 2000144697A
- Authority
- JP
- Japan
- Prior art keywords
- water
- fishway
- gate
- upstream
- water level
- 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.)
- Granted
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
【０００１】[0001]
【発明の属する技術分野】本発明はダム、または堰に設
置される魚道設備において、上流側水位の変動に対し一
定の水量を魚道部に放流することを目的としたゲート設
備を備えた階段式魚道設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishway facility installed in a dam or a weir, which is provided with a step-type gate facility for discharging a constant amount of water to the fishway section with respect to fluctuations in the water level on the upstream side. Regarding fishway equipment.
【０００２】[0002]
【従来の技術】湛水池を形成するために河川を横断して
設置されるダム、または堰等の施設は、河川水の自然な
流下を分断、または遮断するため、河川に棲息する魚類
にとっては、その移動を困難または不可能とする障害物
となる。このことを補償するため、魚類の移動を可能な
らしめる水路または装置として魚道が設置される。2. Description of the Related Art Dams or weirs installed across rivers to form flooded ponds break or block the natural flow of river water, and are therefore difficult for fish inhabiting rivers. , An obstacle that makes it difficult or impossible to move. To compensate for this, fishways are installed as waterways or devices that allow fish to move.
【０００３】ダム、または堰等に設置される一般的な魚
道の型式として階段式魚道があり、今日まで様々な研
究、工夫がなされ、数多く設置されている。[0003] There is a step-type fishway as a general type of fishway installed in a dam, a weir, or the like.
【０００４】しかしながら固定構造物として設置される
階段式魚道は、一定の上流側湛水池水位に対応して設計
されているため、この水位が変動することにより流下す
る水量・流速が著しく変化し、そのため、魚類の遡上に
とって常に良好な状態を維持・確保することが困難であ
るという問題点がある。[0004] However, since the stair-type fishway installed as a fixed structure is designed to correspond to a certain level of the upstream flood pond, the amount of water flowing and the flow velocity change remarkably due to the fluctuation of this level. Therefore, there is a problem that it is difficult to always maintain and secure a favorable state for fish going upstream.
【０００５】この水位変動に対応するため、従来は図１
１に示すセクター式ゲート設備（（ａ）はゲート上昇
時、（ｂ）は下降時）、図１２に示す連結作動式転倒ゲ
ート設備（（ａ）は転倒ゲート下降時、（ｂ）は上昇
時）等が実施されている。[0005] In order to cope with this water level fluctuation, FIG.
1 (a) when the gate is ascending, (b) when descending), the linked-operating type inverting gate facility shown in FIG. 12 ((a) when the falling gate is lowered, and (b) when ascending). ) Etc. are implemented.
【０００６】これらの技術はいずれもゲートを越流して
流下する水量を一定に保つように設計されているため、
魚類の遡上可能な水流勾配を確保するためには大型、ま
たは複数の施設となる傾向があり、また施設の多くは動
力により作動するため、水位変動に応じて頻繁な操作が
必要となる。All of these techniques are designed to keep the amount of water flowing over the gate constant.
In order to secure a water flow gradient that allows fish to run up, there is a tendency to use large or multiple facilities, and since many facilities are operated by power, frequent operations are required according to water level fluctuations.
【０００７】[0007]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、上流側水位変動によって、自動・無動力で
流下水量を最適状態に保つと同時に、設備を簡易化する
ことにある。The problem to be solved by the present invention is to keep the amount of flowing water at an optimum level automatically and without power by fluctuations in the upstream water level and to simplify the equipment.
【０００８】[0008]
【課題を解決するための手段】前記課題を解決するた
め、本発明の階段式魚道設備は、河川を横断して設置さ
れるダム、堰などで形成される上流側湛水池に、魚類の
移動可能施設として設置される階段式魚道設備におい
て、前記階段式魚道部にバイパス的に側水路を設置し、
この側水路部に側水路を遮断する止水壁と、この止水壁
を貫通して側水路上下流方向に設置された固定導水管
と、この導水管の上流側流入口を扉体が摺動して作動す
るゲートとを設置し、このゲートは前記上流側湛水池の
水位に追随して昇降可能なフロート・ガイドレールを有
し、前記上流側湛水池水位または昇降状態に応じて導水
管流入口を閉塞する度合いが可変となるよう前記扉体に
開口部を設けた構造とし、前記上流側湛水池水位が変動
することによる前記階段式魚道部の通水量の増減を補う
よう前記ゲートが導水管流入口通水面積を調節して側水
路通水量を変化させる構成とした。Means for Solving the Problems To solve the above-mentioned problems, a step-type fishway facility of the present invention moves fish to an upstream flood pond formed by a dam or a weir installed across a river. In a step-type fishway facility installed as a possible facility, a side waterway is installed in a bypass manner in the step-type fishway section,
A water blocking wall that blocks the side water channel in the side water channel portion, a fixed water pipe installed through the water blocking wall in the upstream and downstream directions of the water channel, and a door sliding on the upstream inlet of the water channel. A gate that moves and operates, the gate having a float guide rail that can move up and down following the water level of the upstream flood pond, and a water pipe according to the water level of the upstream flood pond or the rising / falling state. The door body is provided with an opening so that the degree of closing the inflow port is variable, and the gate is provided so as to compensate for an increase or decrease in the flow rate of the stepped fishway due to the fluctuation of the upstream flooded pond water level. The structure to change the water flow rate in the side channel by adjusting the water flow area of the water inlet of the headrace pipe was adopted.
【０００９】上流側湛水池水位が低く階段式魚道部を流
下する水量が少ない場合は、側水路導水管部を潜孔式魚
道として、魚類の遡上を可能とした。[0009] When the water level of the upstream flood pond is low and the amount of water flowing down the stepped fishway is small, the side channel conduit is a submerged fishway so that fish can run up.
【００１０】前記階段式魚道設備に、止水壁、固定導水
管、ゲートによって構成される自動流量調節ゲート設備
を備えた。[0010] The stepped fishway equipment is provided with an automatic flow control gate equipment comprising a water stop wall, a fixed water pipe, and a gate.
【００１１】[0011]
【発明の実施の形態】図１、図２は、階段式魚道部に側
水路を設置し、側水路に本発明の自動流量調節ゲート設
備を設置した階段式魚道設備の平面図、縦断面図を示
す。図１（ａ）は全体平面図、図２（ａ）は上部階段式
魚道部にバイパス水路的に設置された側水路の縦断面
図、図２（ｂ）は階段式魚道部の縦断面図である。1 and 2 are a plan view and a longitudinal sectional view of a stairway type fishway facility in which a side waterway is installed in a stairway type fishway section, and the automatic flow control gate equipment of the present invention is installed in the sideway waterway. Is shown. 1 (a) is an overall plan view, FIG. 2 (a) is a vertical sectional view of a side water channel installed as a bypass channel in the upper stepped fishway section, and FIG. 2 (b) is a vertical sectional view of the stepped fishway section. It is.
【００１２】これらの図において、アは上部階段式魚道
部、イは側水路部、ウは魚道部中間プール、エは下部階
段式魚道部である。また、図１（ｂ）は階段式魚道部の
断面図（切欠越流部と潜孔部を有するアイスハーバー
型）を示す。（ｂ−１）〜（ｂ−３）はそれぞれ図１
（ａ）におけるＡ−Ａ，Ｂ−Ｂ，Ｃ−Ｃ断面図である。In these figures, a is an upper stairway fishway, A is a side waterway, C is a fishway intermediate pool, and D is a lower stairway fishway. FIG. 1B is a cross-sectional view (an ice harbor type having a notched overflow portion and a latent hole portion) of a stepped fishway portion. (B-1) to (b-3) are each shown in FIG.
It is AA, BB, and CC sectional drawing in (a).
【００１３】図１、図２において、Ｑ１は上部階段式魚
道部を流下する水量、Ｑ２は側水路部を流下する水量、
Ｑ３は下部階段式魚道部を流下する水量とする。ここで
Ｑ１＋Ｑ２＝Ｑ３の関係が成立している。In FIG. 1 and FIG. 2, Q1 is the amount of water flowing down the upper stepped fishway, Q2 is the amount of water flowing down the side channel,
Q3 is the amount of water flowing down the lower stairway fishway. Here, the relationship of Q1 + Q2 = Q3 holds.
【００１４】図３、図４は側水路部イの自動流量調節ゲ
ート部を示す。それぞれ（ａ）は縦断面図、（ｂ）は
（ａ）のａおよびｂの断面図である。図３は上流側水位
が高いとき、図４は上流側水位が低いときの状態を示
す。FIG. 3 and FIG. 4 show an automatic flow rate control gate section in the side channel section a. (A) is a longitudinal sectional view, and (b) is a sectional view of a and b in (a). 3 shows a state when the upstream water level is high, and FIG. 4 shows a state when the upstream water level is low.
【００１５】これらの図において１は自動流量調節ゲー
ト、２は導水管、３は止水壁、４はゲート戸当金物（ガ
イドレール）、５はゲート下限ストッパーである。In these figures, 1 is an automatic flow control gate, 2 is a water pipe, 3 is a water stop wall, 4 is a gate door fitting (guide rail), and 5 is a gate lower limit stopper.
【００１６】図５（ａ）は自動流量調節ゲート１の側面
図、図５（ｂ）は側断面図、図５（ｃ）は平面図であ
る。FIG. 5A is a side view of the automatic flow control gate 1, FIG. 5B is a side sectional view, and FIG. 5C is a plan view.
【００１７】図６は自動流量調節ゲート１の正面図であ
る。FIG. 6 is a front view of the automatic flow control gate 1.
【００１８】これらの図において、６は扉体、７は扉体
開口部、８は側部フロート、９はメインローラー、１０
はメインローラー軸、１１は上部フロートである。ま
た、ａラインは本ゲートが水面に浮かぶときの喫水線を
示す。In these figures, 6 is a door, 7 is a door opening, 8 is a side float, 9 is a main roller, 10
Denotes a main roller shaft, and 11 denotes an upper float. The line a indicates a draft line when the gate floats on the water surface.
【００１９】本ゲートは、扉体６の両側に箱型の側部フ
ロート８を配置し、これを扉体６と一体として構成する
ことにより、扉体６の主端縦桁として兼用した構造とな
っている。メインローラー９は片側に２個、両側計４個
を取り付け、戸当金物４（ガイドレール）に沿って円滑
な昇降作動ができる構造とする。メインローラー９を支
持するメインローラー軸１０は、側部フロート８を貫通
して強固に取り付けられている。扉体６には導水管２の
入口形状に合わせ、また扉体６の昇降位置によって流入
口閉塞度合いを可変とするよう開口部７を設けている。This gate has a structure in which box-shaped side floats 8 are arranged on both sides of the door body 6 and are integrally formed with the door body 6 so as to serve also as a main end vertical girder of the door body 6. Has become. Two main rollers 9 are mounted on one side, and a total of four on both sides, so that the main roller 9 can be smoothly moved up and down along the door holder 4 (guide rail). A main roller shaft 10 that supports the main roller 9 penetrates the side float 8 and is firmly attached. The door body 6 is provided with an opening 7 so as to conform to the shape of the inlet of the water pipe 2 and to vary the degree of closing of the inflow port depending on the position at which the door body 6 moves up and down.
【００２０】図７から図９は本ゲート設備の作動概要を
示す。図７（ａ）は上流側水位がＷＬ１の位置にあり、
これを喫水線として自動流量調節ゲート１は浮いている
状態であり、ゲート開口部７と導水管２流入口は図６
（ｂ）の状態で重なり、通水している。このときの通水
量は上流側水位ＷＬ１と止水壁３下流側水位ＷＬ２との
水位差ｈ１と、図６（ａ）の開口面積Ａ１によって決定
される。FIGS. 7 to 9 show an outline of the operation of the gate equipment. FIG. 7A shows that the upstream water level is at the position of WL1,
Using this as a draft line, the automatic flow control gate 1 is in a floating state, and the gate opening 7 and the inlet of the water pipe 2 are connected to each other as shown in FIG.
In the state of (b), water is flowing and overlapping. The flow rate at this time is determined by the water level difference h1 between the upstream water level WL1 and the downstream water level WL2 of the water blocking wall 3, and the opening area A1 in FIG.
【００２１】このときの通水量の計算式は一般にThe formula for calculating the flow rate at this time is generally
【数１】 で示される。(Equation 1) Indicated by
【００２２】図８（ａ）は上流側水位がＷＬ３の位置ま
で下降し、自動流量調節ゲート１がこれに追随して下降
作動した状態を示す。ゲートが下降したことにより、ゲ
ート開口部７と導水管２流入口は図８（ｂ）の状態で重
なり、図８（ｂ）の開口面積Ａ２となる。このときの通
水量は、上記図７の説明と同様に、上流側水位ＷＬ３と
下流側水位ＷＬ４との水位差ｈ２と、開口面積Ａ２によ
って決定される。FIG. 8 (a) shows a state in which the upstream water level has dropped to the position WL3, and the automatic flow rate control gate 1 has been moved downward accordingly. When the gate is lowered, the gate opening 7 and the inlet of the water pipe 2 overlap in the state of FIG. 8B, and the opening area A2 in FIG. 8B is obtained. The flow rate at this time is determined by the water level difference h2 between the upstream water level WL3 and the downstream water level WL4 and the opening area A2, as in the description of FIG.
【００２３】ここで、上流側水位がＷＬ１よりＷＬ３ま
で下降したことにより、上部階段式魚道部アを流下する
水量Ｑ１がΔＱ１だけ減少するものとする。これに対
し、側水路部イを流下する水量Ｑ２においてΔＱ１に相
当する水量ΔＱ２が増加すれば、結果として下流側階段
式魚道部エを流下する水量Ｑ３は変動しないこととな
る。また、図１、２の配置図においては水位ＷＬ２並び
にＷＬ４は中間プール・ウの水位である。つまり、水量
Ｑ２が水位差ｈ１からｈ２に低下してもなお、水量ΔＱ
２の増加を確保可能とするよう、通水面積Ａ２がＡ１よ
り増加する扉体開口形状であるものとする。Here, it is assumed that the amount of water Q1 flowing down the upper staircase type fishway part A decreases by ΔQ1 due to the upstream water level having dropped from WL1 to WL3. On the other hand, if the amount of water ΔQ2 corresponding to ΔQ1 increases in the amount of water Q2 flowing down the side waterway part A, the amount of water Q3 flowing down the downstream stepped fishway part D does not change as a result. 1 and 2, the water levels WL2 and WL4 are the water levels of the intermediate pool U. That is, even if the water amount Q2 decreases from the water level difference h1 to h2, the water amount ΔQ
In order to be able to secure an increase of 2, it is assumed that the water passage area A2 has a door opening shape that is larger than A1.
【００２４】図９（ａ）は上流側水位が最高水位にある
状態を示す。このとき、上部階段式魚道部アを流下する
水量Ｑ１は最大水量が流れており、側水路からの補給が
必要ない場合である。このときゲートは最大上昇位置に
あり、且つ開口部は完全閉塞している状態である。FIG. 9A shows a state in which the upstream water level is at the highest level. At this time, the amount of water Q1 flowing down the upper staircase type fishway portion a is the maximum amount of water flowing, and there is no need to supply water from the side waterway. At this time, the gate is at the maximum raised position, and the opening is completely closed.
【００２５】このように、上部階段式魚道部の変動水量
を補う水量を側水路で確保するよう、ゲート開口部を連
続的に変化させる形状としたことで、中間プール・ウ以
降の水量Ｑ３を概ね一定に確保することができる。As described above, the shape of the gate opening is continuously changed so as to secure the amount of water that compensates for the fluctuating amount of water in the upper staircase type fishway, so that the amount of water Q3 after the intermediate pool / cout is changed. It can be kept almost constant.
【００２６】図１０は、安定した流量により下部階段式
魚道部を遡上し中間プール・ウ迄遡上してきた魚類が、
上部魚道部に比較して流量の多い側水路部を通過する状
態を示す。この場合、ゲート開口部並びに導水管部は潜
孔式の魚道となる。FIG. 10 shows that fishes that have gone up the lower stairway fishway at a stable flow rate and have gone up to the intermediate pool c.
This shows a state where the vehicle passes through a side waterway with a larger flow rate than the upper fishway. In this case, the gate opening and the water pipe become a submerged fishway.
【００２７】[0027]
【発明の効果】以上説明したように、本発明によれば、
上流側湛水池水位が変動し、上部階段式魚道部を通過す
る水量の変化が発生しても、側水路に設置した自動流量
調節ゲート設備が自動・無動力で水位変動に追従し、上
部階段式魚道部で減少した水量を下部階段式魚道部に補
給することで、常に安定した水量を魚道部に供給するこ
とができ、また、上部階段式魚道の水量が著しく少ない
ときは自動流量調節ゲートが潜孔式魚道として利用でき
る構造であることより、全体として遡上魚類に対し有効
な階段式魚道設備を提供することができる。As described above, according to the present invention,
Even if the water level of the upstream flood basin fluctuates and the amount of water passing through the upper staircase type fishway changes, the automatic flow control gate equipment installed in the side channel automatically and without power follows the water level fluctuation, By supplying the reduced water volume to the lower stairway fishway section, a stable water volume can be supplied to the fishway section at all times. Has a structure that can be used as a submerged fishway, so that it is possible to provide a staircase type fishway facility that is effective for upstream fish as a whole.
【図１】 （ａ）は本発明による階段式魚道設備平面
図、（ｂ）は上部階段式魚道部の断面図である。FIG. 1 (a) is a plan view of a stepped fishway facility according to the present invention, and FIG. 1 (b) is a sectional view of an upper stepped fishway section.
【図２】 （ａ）は側水路の縦断面図、（ｂ）上部階段
式魚道の断面図である。FIG. 2A is a longitudinal sectional view of a side waterway, and FIG. 2B is a sectional view of an upper step type fishway.
【図３】 （ａ）は階段式魚道部の縦断面図、（ｂ）は
（ａ）のａ−ａ線及びｂ−ｂ線における断面図である。3A is a longitudinal sectional view of a stepped fishway, and FIG. 3B is a sectional view taken along line aa and line bb in FIG. 3A.
【図４】 （ａ）は自動流量調節ゲート概要図、（ｂ）
は（ａ）のａ−ａ線及びｂ−ｂ線における断面図であ
る。FIG. 4A is a schematic diagram of an automatic flow control gate, and FIG.
3A is a cross-sectional view taken along line aa and line bb in FIG.
【図５】 （ａ）はゲート側面図、（ｂ）はゲート側断
面図、（ｃ）はゲート平面図である。5A is a side view of the gate, FIG. 5B is a cross-sectional view of the gate side, and FIG. 5C is a plan view of the gate.
【図６】 ゲート正面図である。FIG. 6 is a front view of a gate.
【図７】 自動流量調節ゲート作動概要図である。FIG. 7 is a schematic diagram of an automatic flow control gate operation.
【図８】 自動流量調節ゲート作動概要図である。FIG. 8 is a schematic diagram of an automatic flow control gate operation.
【図９】 自動流量調節ゲート作動概要図である。FIG. 9 is a schematic diagram showing the operation of an automatic flow control gate.
【図１０】 魚類通過時の概要図（潜孔式魚道図）であ
る。FIG. 10 is a schematic diagram (submerged fishway map) when fish pass.
【図１１】 従来のセクター式ゲート設備の概略図であ
る。FIG. 11 is a schematic view of a conventional sector type gate facility.
【図１２】 従来の連結作動式転倒ゲート設備の概略図
である。FIG. 12 is a schematic view of a conventional joint-operated fall gate facility.
ア 上部階段式魚道部、イ 側水路部、ウ 魚道中間プ
ール、エ 下部階段式魚道部、１ 自動流量調節ゲー
ト、２ 導水管、３ 止水壁、４ 戸当金物（昇降ガイ
ドレール）、５ 下限ストッパー、６ 扉体、７ 扉体
開口部、８ 側部フロート、９ メインローラー、１０
メインローラー軸、１１ 上部フロート(A) Upper stairway fishway section, (b) Side waterway section, (c) Fishway middle pool, (d) Lower stairway fishway section, (1) automatic flow control gate, (2) water conduit, (3) water blocking wall, (4) door fittings (elevating guide rail), (5) Lower limit stopper, 6 door body, 7 door body opening, 8 side float, 9 main roller, 10
Main roller shaft, 11 upper float
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤井 道博 佐賀県佐賀市堀川町１番32−1001 (72)発明者 佐藤 政治 佐賀県佐賀市高木瀬西４丁目４−15 (72)発明者 阿部 武己 福岡県福岡市博多区吉塚２−20−３−305 Ｆターム(参考） 2D019 AA45 ──────────────────────────────────────────────────続 き Continued on the front page (72) Michihiro Fujii 1-32-1001, Horikawa-cho, Saga City, Saga Prefecture (72) Politics Sato 4-4-1-15 Takagise Nishi, Saga City, Saga Prefecture (72) Takemi Abe, Inventor 2D019 AA45 F-term (reference) 2-20-3-305 Yoshizuka, Hakata-ku, Fukuoka
Claims (3)
で形成される上流側湛水池に、魚類の移動可能施設とし
て設置される階段式魚道設備において、 前記階段式魚道部にバイパス的に側水路を設置し、この
側水路部に側水路を遮断する止水壁と、この止水壁を貫
通して側水路上下流方向に設置された固定導水管と、こ
の導水管の上流側流入口を扉体が摺動して作動するゲー
トとを設置し、このゲートは前記上流側湛水池の水位に
追随して昇降可能なフロート・ガイドレールを有し、前
記上流側湛水池水位または昇降状態に応じて導水管流入
口を閉塞する度合いが可変となるよう前記扉体に開口部
を設けた構造とし、前記上流側湛水池水位が変動するこ
とによる前記階段式魚道部の通水量の増減を補うよう前
記ゲートが導水管流入口通水面積を調節して側水路通水
量を変化させる構成とした魚道設備。1. A step-type fishway facility installed as a movable facility for fish in an upstream flood pond formed by a dam, a weir, and the like installed across a river, wherein the step-type fishway section is bypassed. A side waterway is installed in the side waterway, a water stop wall that blocks the side waterway in the side waterway portion, a fixed water pipe installed through the water stop wall and installed in the upstream and downstream of the side waterway, and an upstream side of the waterway. A gate, which operates by sliding a door body at an inflow port, is installed, and this gate has a float guide rail that can move up and down following the water level of the upstream flood pond, and the upstream flood pond water level or The door body is provided with an opening so that the degree of closing the water pipe inlet according to the ascending / descending state is variable, and the flow rate of the stepped fishway portion due to the fluctuation of the upstream flooded pond water level is changed. The gate is designed to compensate for increase / decrease Adjusting fishway equipment was configured to vary the side water passage through water and.
流下する水量が少ない場合は、側水路導水管部を潜孔式
魚道として、魚類の遡上を可能としたことを特徴とする
請求項１記載の階段式魚道設備。2. When the water level of the upstream flood basin is low and the amount of water flowing down the stepped fishway is small, the side channel conduit is a submerged fishway, enabling fish to run up. The staircase type fishway equipment according to claim 1.
成される自動流量調節ゲート設備を備えた請求項１また
は２記載の階段式魚道設備。3. The step-type fishway facility according to claim 1, further comprising an automatic flow control gate facility comprising a water stop wall, a fixed water pipe, and a gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32730298A JP3490917B2 (en) | 1998-11-17 | 1998-11-17 | Stair type fishway equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32730298A JP3490917B2 (en) | 1998-11-17 | 1998-11-17 | Stair type fishway equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000144697A true JP2000144697A (en) | 2000-05-26 |
| JP3490917B2 JP3490917B2 (en) | 2004-01-26 |
Family
ID=18197621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32730298A Expired - Lifetime JP3490917B2 (en) | 1998-11-17 | 1998-11-17 | Stair type fishway equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3490917B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100515189B1 (en) * | 2002-09-27 | 2005-09-16 | 건양씨엔이 (주) | The facility of river in the civil center and method restoration of it |
| RU2451132C1 (en) * | 2010-11-26 | 2012-05-20 | Государственное образовательное учреждение высшего профессионального образования "Марийский государственный университет" | Fish pass for high-head water development |
| CN105113470A (en) * | 2015-04-17 | 2015-12-02 | 中国电建集团贵阳勘测设计研究院有限公司 | Fish passing method and device for water conservancy and hydropower dam |
| CN109371932A (en) * | 2018-11-30 | 2019-02-22 | 中国电建集团成都勘测设计研究院有限公司 | Waterpower vertical shaft type crosses fish structure |
| CN112081064A (en) * | 2020-09-17 | 2020-12-15 | 李雅园 | Classification selection fishway device for artificial intervention natural water flow acceleration scour prevention |
-
1998
- 1998-11-17 JP JP32730298A patent/JP3490917B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100515189B1 (en) * | 2002-09-27 | 2005-09-16 | 건양씨엔이 (주) | The facility of river in the civil center and method restoration of it |
| RU2451132C1 (en) * | 2010-11-26 | 2012-05-20 | Государственное образовательное учреждение высшего профессионального образования "Марийский государственный университет" | Fish pass for high-head water development |
| CN105113470A (en) * | 2015-04-17 | 2015-12-02 | 中国电建集团贵阳勘测设计研究院有限公司 | Fish passing method and device for water conservancy and hydropower dam |
| CN109371932A (en) * | 2018-11-30 | 2019-02-22 | 中国电建集团成都勘测设计研究院有限公司 | Waterpower vertical shaft type crosses fish structure |
| CN109371932B (en) * | 2018-11-30 | 2024-02-13 | 中国电建集团成都勘测设计研究院有限公司 | Hydraulic shaft type fish passing structure |
| CN112081064A (en) * | 2020-09-17 | 2020-12-15 | 李雅园 | Classification selection fishway device for artificial intervention natural water flow acceleration scour prevention |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3490917B2 (en) | 2004-01-26 |
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