JPS6025562B2 - Assembly type cylindrical fishway structure - Google Patents
Assembly type cylindrical fishway structureInfo
- Publication number
- JPS6025562B2 JPS6025562B2 JP57079244A JP7924482A JPS6025562B2 JP S6025562 B2 JPS6025562 B2 JP S6025562B2 JP 57079244 A JP57079244 A JP 57079244A JP 7924482 A JP7924482 A JP 7924482A JP S6025562 B2 JPS6025562 B2 JP S6025562B2
- Authority
- JP
- Japan
- Prior art keywords
- wall
- block
- fishway
- foundation
- hole
- 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
Links
- 239000004567 concrete Substances 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 241000251468 Actinopterygii Species 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- MFYFNUKUXIRYFV-JSGCOSHPSA-N Polygonone Natural products O=CC=1C(=O)C[C@H]2C(C)(C)CCC[C@@]2(C)C=1 MFYFNUKUXIRYFV-JSGCOSHPSA-N 0.000 description 1
- 244000305267 Quercus macrolepis Species 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
- E02B8/085—Devices allowing fish migration, e.g. fish traps
-
- 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
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Description
【発明の詳細な説明】
この発明はダムや取水堰等の近傍に形成される河川を棚
上する魚類の通路としての魚道の構造体に関するもので
あり、より具体的にはブロック化されたユニットを絹立
てることにより、所望する高さの節型魚道の構造体に関
するものである。[Detailed Description of the Invention] The present invention relates to a fishway structure that is formed near a dam, intake weir, etc. and serves as a passage for fish to reach the shelf in a river, and more specifically, it relates to a fishway structure that is formed in the vicinity of a dam, intake weir, etc. This relates to a knot-shaped fishway structure of a desired height by erecting the structure.
近年水資源の確保や農業用水等の有効利用のため、河川
のいたるところにダムや取水堰等が構築され、これらの
ダム等は河川を物上するアュやサケ等の魚類が湖上する
場合の障害となり、魚類の生息に重大な影響を及ぼすも
のである。そのため河川に生息産卵をする魚類が物上で
きるように、ダム等の近傍に魚道を構築することは強く
要望されるところである。In recent years, dams and intake weirs have been built all over rivers in order to secure water resources and make effective use of agricultural water. It becomes a nuisance and has a serious impact on the habitat of fish. Therefore, there is a strong demand for constructing fish ladders near dams, etc., so that fish that live and spawn in rivers can access them.
通常河川を遡上する魚類は、河川の主流に沿って下流か
ら上流に物上する習性を有するもので、この遡上の通路
としての魚道に要求される条件としては、榎下より魚道
に魚類を誘導し、跳躍行動を譲発すべ〈流速・水深、照
度等の流水環境を検討し、魚類が疲弊することなく、で
きる限り自然の状態で物上できることが望ましいもので
ある。Fish that normally migrate up rivers have the habit of ascending from downstream to upstream along the main stream of the river, and the conditions required for a fish ladder as a passageway for this upstream migration are as follows: It is desirable to consider the running water environment, such as current speed, water depth, and illuminance, so that the fish can behave in their natural state as much as possible without becoming exhausted.
このような要請に対応して従来より採用されてきた魚道
の構造体としては、ダムや櫨に添設して緩煩斜をなす階
段状の水路を、ダムの上端から下流の水面に達するまで
形成し、小規模な優を階段状に形成する階段状魚道や、
緩勾配をなす斜面をダムの上端から下流水面に達するよ
うに形成し、千鳥形に遮壁を突出させ、これによって流
下水を迂回させて水勢を減じて魚類の遡上を図る斜面式
魚道等がある。しかしながらこれらの従来の魚道の構造
体は大きな問題点を包含するものであった。Fishway structures that have traditionally been adopted in response to these demands include a step-like waterway attached to a dam or oak tree that forms a gentle slope from the top of the dam to the water surface downstream. A stepped fishway that forms a small-scale staircase,
A slope-type fishway, etc., in which a gentle slope is formed from the upper end of the dam to reach the downstream water surface, and shielding walls are protruded in a staggered pattern, thereby diverting the flowing water and reducing the water force, allowing fish to migrate upstream. There is. However, these conventional fishway structures include major problems.
即ち魚道は河川内に構築されるため、渇水期に行なわれ
るものであり、短期間に完成できる構造体が望ましいも
のであるが、上述の従来の構造体はいずれもコンクリー
ト等の打設により現場で直接構築されるため、完成まで
に長期間を要するものであった。また緩傾斜をなすこと
が必須要件であり、平面的に大きなスペースを必要とす
るという問題点もあった。従ってダムや堰が大型であれ
ばある程、上記問題点は顕著となり、構築に要する費用
も膨張するため、魚道の構築計画を断念するというのが
現状である。この発明はこのような問題点を解消すべく
なされたもので、その目的とするところは、魚道の構造
体において、平面略扇形をなし鉄筋コンクリート等から
なる基盤上に周緑部に沿って所定高を有する外壁を垂直
に形成しさらにこの外壁の内側に所定高を有する内壁を
外壁と略平行に形成し、前記基盤、外壁、内壁により断
面略Ｕ字状の水路を画成してなるブロック部材を、ダム
や取水堰近傍にコンクリート等の打設により所定のステ
ップ高を有し１周分の螺旋階段状をなすように形成され
た基礎ブロックのステップ上に前記ブロック部材を順次
積層教遣し筒状となし、前記ブロック部材上の水路を順
次蓮通せしめ前記筒内に螺旋階段状の運通した水路を前
記筒内の上端から下端に達するように形成することによ
り、予め螺旋階段状の水路を形成するブロックを製作し
、魚道構築現場には基礎ブロックのみを構築することに
より、極めて短期間に所望の魚道が構築されるとともに
、円筒形状の魚道であることから設置されるスべ−スも
極めて小面積で可能となる、経済性に優れた魚道の構造
体を提供するところにある。In other words, since fish ladders are constructed within rivers, they are constructed during the dry season, and it is desirable to have a structure that can be completed in a short period of time. It took a long time to complete because it was constructed directly from the factory. Another problem was that it required a gentle slope and required a large space in terms of plane. Therefore, the larger the dam or weir, the more significant the above problems become, and the cost required for construction increases, so the current situation is that plans to construct fish ladders are abandoned. This invention was made to solve these problems, and its purpose is to provide a fishway structure with a substantially fan-shaped planar base made of reinforced concrete, etc., at a predetermined height along the surrounding green area. A block member comprising: an outer wall vertically formed, an inner wall having a predetermined height formed substantially parallel to the outer wall inside the outer wall, and a water channel having a substantially U-shaped cross section defined by the base, the outer wall, and the inner wall. The block members are sequentially stacked on the steps of a foundation block that has a predetermined step height and is formed in the shape of a spiral staircase for one round by placing concrete or the like near a dam or intake weir. The water channels on the block member are made into a cylinder shape, and the water channels on the block member are sequentially passed through to form a spiral step-shaped water channel in the cylinder so as to reach from the upper end to the lower end of the cylinder. By manufacturing the blocks that form the fishway and constructing only the foundation blocks at the fishway construction site, the desired fishway can be constructed in an extremely short period of time. Another object of the present invention is to provide a highly economical fishway structure that can be realized in an extremely small area.
以下にこの発明の好適な実施例について図面を参照し説
明する。Preferred embodiments of the present invention will be described below with reference to the drawings.
第１図はこの発明に係る組立式筒型魚道の構造体に使用
されるブロック部材の一実施例を示すものであり、同図
ａに平面図、同図ｂに断面図、同図ｃに斜視図を示すも
のである。この実施例においては、円筒型魚道の構築に
使用されるブロック部材１は、適宜鉄筋を配設したコン
クリートで、所定の直径を有する真円を６等分した中心
角を有する平面扇形に形成された基盤２上に、周縁部に
沿って円弧状をなし、前記ブロック部村１が円周方向に
６部材積層された場合に上部に位置するブロック部材１
の下面と接する高さを有する外壁３が垂直に形成され、
その略中央部に方形の窓４が穿設されている。そして前
記外壁３の内側に外壁３よりやや低い内壁５が同心円状
に形成され、前記基盤２及び外壁３、内壁４により断面
が略Ｕ字状をなす水路６が画成されており、この実施例
においては更にこの水路６内に上流側に高く下流側に低
く隔壁７，７′が形成され、それぞれの隔壁７，７′に
は潜孔８，８′が穿設されており、この溶孔８，８′は
ブロック部材１を局方向に積層した場合に、相隣接する
ブロック間の水路６を蓮適するものである。また前記基
盤２の中心部はやや幅広となし、扇形の要部にはブロッ
クを積層する場合の位置決めとなるとともに、ブロック
間を強固に一体化するために、後述する基礎と一体に形
成される支柱を挿入すべ〈貫通孔９が穿穀されている。FIG. 1 shows an embodiment of the block member used in the structure of the prefabricated cylindrical fishway according to the present invention. FIG. 1A shows a plan view, FIG. It shows a perspective view. In this embodiment, the block member 1 used for constructing the cylindrical fishway is made of concrete with appropriate reinforcing bars, and is formed into a planar fan shape with a central angle that is obtained by dividing a perfect circle with a predetermined diameter into six equal parts. A block member 1 is disposed on the base plate 2 having an arc shape along the peripheral edge and located at the upper part when the block member 1 is laminated with six members in the circumferential direction.
An outer wall 3 having a height in contact with the lower surface of is vertically formed,
A rectangular window 4 is bored approximately in the center thereof. An inner wall 5 slightly lower than the outer wall 3 is concentrically formed inside the outer wall 3, and a water channel 6 having a substantially U-shaped cross section is defined by the base 2, the outer wall 3, and the inner wall 4. In this example, partition walls 7, 7' are further formed in the water channel 6, being higher on the upstream side and lower on the downstream side, and the partition walls 7, 7' are provided with latent holes 8, 8'. The holes 8, 8' allow the water channels 6 between adjacent blocks to pass through when the block members 1 are stacked in the local direction. The center part of the base 2 is slightly wide, and the fan-shaped main part is formed integrally with the foundation described later, in order to position the blocks when stacking them and to firmly integrate the blocks. Insert the support (the through hole 9 has been drilled).
この実施例のように、外壁３に窓４を設けることは、魚
類の習性として明所から階所には容易に進入しないため
、窓４より陽光を探り入れることにより、魚類を魚道内
にスムーズに議導するためであり、水路６の上下流間に
隔壁７，７′を設けたり潜孔８，８′を設けることは、
水路６内に水流をある程度停滞させることにより、物上
する魚類に休息場を与えることにより魚類が疲弊するこ
となく物上可能ならしめるものである。次に前記ブロッ
ク部材１を用いて円筒型魚道を構築する場合について説
明する。Providing a window 4 in the outer wall 3 as in this embodiment is useful because fish do not easily enter the upper floor from a bright place, so by allowing sunlight to penetrate through the window 4, fish can be guided smoothly into the fishway. In order to guide the
By stagnating the water flow to some extent in the waterway 6, it is possible to provide a resting place for the fishes that eat there, without causing the fishes to become exhausted. Next, a case will be described in which a cylindrical fishway is constructed using the block member 1.
まずダムや取水堰に近接する妥当な個所に、コンクリー
ト等の打談により基礎１０を構築する。First, a foundation 10 is constructed using concrete or the like at an appropriate location near the dam or water intake weir.
そしてその上部に基礎ブロック１１を形成するものであ
るが、この実施例においては、前記ブロック部材１と同
径をなす平面円形を有し、ステップ高は、この円周を６
等分した高さとし、１周分即ち６段の螺旋階段を形成す
ることになる。この基礎ブロック１１をなす螺旋階段の
ステップは、前記ブロック部材１の平面と同一形状に形
成される方が安定性の点で望ましいものである。そして
この基礎ブロック１１の中心点には、前記ブロック部材
１の貫通孔９が鉄挿入されるための支柱１２が、基礎ブ
ロック１１と一体に形成される。この実施例においては
、貫通孔９及び支柱１２は円形となすものを示すが、前
記ブロック部材１の分割数に合致した角形形状、例えば
６角形とすることにより周方向のブロック部村のズレを
防止できるとともに、各ブロック部材を多角形の辺を一
辺ずつずらして鉄挿入することより、位置決めが極めて
容易に可能となる。また前記基礎ブロック１１の所定の
個所には、ダムや取水嬢から放出される水の排出口１３
が設置されている。このように基礎ブロック１１を形成
した後に、前記ブロック部材１を、支柱１２内に貫通孔
９を舷挿入して、螺旋階段のステップ上に下段から上段
へと順次積層戦層する。A foundation block 11 is formed on top of the foundation block 11. In this embodiment, the foundation block 11 has a circular planar shape with the same diameter as the block member 1, and the step height is 6 times the circumference of the base block 11.
The heights are divided into equal parts to form a spiral staircase of one circumference, that is, six steps. In terms of stability, it is preferable that the steps of the spiral staircase forming the foundation block 11 be formed in the same shape as the plane of the block member 1. A support 12 into which the through hole 9 of the block member 1 is inserted is integrally formed at the center of the foundation block 11. In this embodiment, the through hole 9 and the support column 12 are shown to be circular, but by making them into a rectangular shape that matches the number of divisions of the block member 1, for example, a hexagon, it is possible to avoid misalignment of the block portions in the circumferential direction. This can be prevented, and positioning can be extremely easily achieved by inserting each block member by shifting the sides of the polygon one by one. In addition, at a predetermined location of the foundation block 11, there is an outlet 13 for water released from a dam or water intake.
is installed. After forming the foundation block 11 in this manner, the block member 1 is inserted into the support column 12 through the through hole 9, and is laminated one by one on the steps of the spiral staircase from the bottom to the top.
この場合前記ブロック部材１上に形成される断面略Ｕ字
状の水路６は、螺旋階段状に順次蓮通され、上端から下
端に達する流水路が形成される。この実施例においては
、６個のブロック部材で一段の螺旋階段が形成されてお
り、各ブロック部村間の接合は、予め前記ブロック部材
１の基礎２内に細孔を穿設しておき、ボルト締め１４等
により強固に接合されるものであり、水路６の各ブロッ
ク部材間の接合部には、ェポキシ系等の伸縮の高いコー
キング材１５により、防水コーキングを施すものである
。このようにして所定数のブロック部材を順次積層載畳
することにより、所望する高さを有する円筒状の魚道が
構築され、ダムや取水堰１６と魚道との接合部には、前
記水路６と同一幅を有する断面Ｕ字状の取水水路部材１
７を円筒の最上部に設けることにより、取水堰上端、取
水水路部村１７、円筒内の螺旋階段状水路、排出ロー３
と蓮適する流水路が形成される。この実施例においては
、最上階を形成するブロック部材として、上部からの採
光が可能なため窓のない部材を使用するものであるが、
下段を形成するブロック部材と同一のものを使用するこ
とも可能であるし、円筒型魚道の周辺に所定数の補強杭
１８を設置することにより、耐震性や安全性を向上させ
ることも可能である。そして円筒型魚道の組立作業の終
了後に、外壁を形成する各ブロック間の継目に、モルタ
ル等の目地語を行なうことにより魚道が完成する。この
状態は第２図及び第３図に展開図等により示すものであ
る。尚この実施例においては、所定径の円を６分割する
場合について説明したが、この発明の実施がこれに限ら
れるものではなく、任意の分割により螺旋階段のステッ
プ高を選択できるものであるし、魚功萱の形成について
も円筒に限られるものでなく、多角形とすることも亦可
能であることはいうまでもない。In this case, the water channel 6 formed on the block member 1 and having a substantially U-shaped cross section is sequentially passed through in a spiral step-like manner to form a water channel reaching from the upper end to the lower end. In this embodiment, a one-step spiral staircase is formed by six block members, and the connections between the blocks are made by drilling holes in the base 2 of the block members 1 in advance. They are firmly joined by bolts 14 or the like, and waterproof caulking is applied to the joints between the block members of the water channel 6 using a highly elastic caulking material 15 such as epoxy. By sequentially stacking a predetermined number of block members in this manner, a cylindrical fishway having a desired height is constructed, and the waterway 6 and Water intake channel member 1 having a U-shaped cross section and having the same width
7 at the top of the cylinder, the upper end of the intake weir, the intake waterway part village 17, the spiral stepped waterway inside the cylinder, and the discharge row 3
A waterway suitable for the lotus is formed. In this example, a member without a window is used as the block member forming the top floor because it allows lighting from above.
It is also possible to use the same block members as those forming the lower stage, and it is also possible to improve earthquake resistance and safety by installing a predetermined number of reinforcing piles 18 around the cylindrical fishway. be. After completing the assembly work of the cylindrical fishway, the fishway is completed by applying mortar or other joints to the joints between the blocks forming the outer wall. This state is shown in developed views and the like in FIGS. 2 and 3. In this embodiment, a case has been described in which a circle with a predetermined diameter is divided into six parts, but the implementation of the present invention is not limited to this, and the step height of the spiral staircase can be selected by arbitrary divisions. It goes without saying that the shape of the fish gong is not limited to a cylinder, but may also be polygonal.
以上のようにこの発明は、筒型魚道の構築工法において
、平面略扇形をなし鉄筋コンクリート等からなる基盤上
に、周縁部に沿って所定高を有する外壁を垂直に形成し
、さらにこの外壁の内側に所定高を有する内壁を外壁と
略平行に形成し、前記基盤、外壁、内壁により画成され
る断面略Ｕ字状の水路を形成してなるブロック部材を、
ダムや取水堰近傍にコンクリート等の打設により、所定
のステップ高を有し１周分の螺旋階段状をなすように形
成された基礎ブロックのステップ上に前記ブロック部材
を周方向に順次積層戦層し筒状となし、前記ブロック部
材上の水路を順次運通せしめ前記筒内に螺旋階段状の蓮
通した水路をこの筒内の上端から下端に達するように形
成するという構成となすことにより、従来の魚道のよう
に平面的に広いスペースを要さないばかりでなく、予め
工場等で所用数量のブロック部材を製作準備できるため
、工期の短縮が大幅に可能となるのである。As described above, the present invention provides a method for constructing a cylindrical fishway, in which an outer wall having a predetermined height is vertically formed along the periphery on a base having a generally fan-shaped planar shape and made of reinforced concrete, etc. A block member is formed by forming an inner wall having a predetermined height substantially parallel to the outer wall, and forming a water channel having a substantially U-shaped cross section defined by the base, the outer wall, and the inner wall,
The block members are sequentially laminated in the circumferential direction on the steps of the foundation block, which is formed by pouring concrete or the like near a dam or intake weir so that it has a predetermined step height and forms one round of spiral steps. By forming a layered cylindrical shape, the water channels on the block member are sequentially passed through, and a spiral step-like lotus water channel is formed in the cylinder so as to reach from the upper end to the lower end of the cylinder. Not only does it not require a large two-dimensional space like conventional fish ladders, but the required number of block members can be prepared in advance at a factory, making it possible to significantly shorten the construction period.
更には魚道を構築すべきダムや取水堰の高さに対しても
、積層戦直されるブロック部材を増減することにより極
めて容易に対処できるものであり、魚道の額斜勾配につ
いても、１周分を形成するブロック部材の分割を任意に
できるため容易に対処可能であり自由度の大きい有益な
魚道の構造体でもある。Furthermore, the height of the dam or intake weir on which the fishway should be built can be easily adjusted by increasing or decreasing the number of block members that are laminated. It is also a useful fishway structure that can be easily handled and has a large degree of freedom because the block members that form it can be divided arbitrarily.
第１図はこの発明の実施に使用されるブロック部材の一
実施例を示すものであり、同図ａは平面図、同図ｂは断
面図、同図ｃは斜視図を示すものである。
第２図はこの発明に係る筒型魚道の構造体を示す一実施
例であり、同図ａは上面図、同図ｂは正面図、同図ｃは
横断面図を示すものである。第３図ａは第２図に示す魚
道の展開図であり、第３図ｂは同図ａの縦断面図である
。各図において、１・・・・・・ブロック部材、２・・
・・・・基盤、３・・・・・・外壁、４・・・・・・窓
、５・・・・・・内壁、６・・・・・・水路、７，７′
・・・・・・隔壁、８，８′…・・・潜孔、９・・・・
・・貫通孔、１０・・・・・・基礎、１１・・・・・・
基礎ブロック、１２・・・・・・支柱、１３・・・・・
・排出口。
第１図第２図
図
の
船
第３図FIG. 1 shows an embodiment of a block member used in carrying out the present invention, in which FIG. 1A shows a plan view, FIG. 1B shows a sectional view, and FIG. 1C shows a perspective view. FIG. 2 shows an embodiment of a cylindrical fishway structure according to the present invention, in which FIG. 2A shows a top view, FIG. 2B shows a front view, and FIG. 2C shows a cross-sectional view. FIG. 3a is a developed view of the fishway shown in FIG. 2, and FIG. 3b is a longitudinal sectional view of FIG. 3a. In each figure, 1... block member, 2...
...Foundation, 3...Outer wall, 4...Window, 5...Inner wall, 6...Waterway, 7,7'
..... Bulkhead, 8, 8' .... Deep hole, 9...
...Through hole, 10...Foundation, 11...
Foundation block, 12... Support, 13...
·Vent. Figure 1 Figure 2 Ship Figure 3
Claims (1)
上に周縁部に沿つて所定高を有する外壁を垂直に形成し
さらに該外壁の内側に所定高を有する内壁を該外壁と略
平行に形成し、該基盤該外壁該内壁により断面略Ｕ字状
の水路を画成してなるブロツク部材を、ダムや取水堰近
傍にコンクリート等の打設により所定のステツプ高を有
し１周分の螺旋階段状をなすように形成された基礎ブロ
ツクのステツプ上に順次積層載置し筒状となし、該ブロ
ツク部材上の水路を順次連通せしめ該筒内に螺旋階段状
の連通した水路を該筒内の上端から下端に達するように
形成してなることを特徴とする組立式筒型魚道の構造体
。 ２ 前記ブロツク部材の扇形要部に所定形状の貫通孔を
穿設し、前記基礎ブロツクの中心部に該貫通孔に嵌合す
る支柱を該基礎ブロツクと一体に立設し、該貫通孔を該
支柱に嵌挿入してなることを特徴とする特許請求の範囲
第１項記載の組立式筒型魚道の構造体。[Scope of Claims] 1. An outer wall having a predetermined height is vertically formed along the peripheral edge on a base made of reinforced concrete or the like and has a substantially sector-shaped planar shape, and an inner wall having a predetermined height inside the outer wall is generally referred to as the outer wall. A block member, which is formed parallel to each other and has a substantially U-shaped cross section defined by the base, the outer wall, and the inner wall, is constructed by placing concrete or the like near a dam or intake weir to have a predetermined step height and one circumference. The blocks are sequentially stacked on top of the steps of a foundation block formed in the shape of a spiral staircase to form a cylinder, and the water channels on the block members are made to communicate one after another. A prefabricated cylindrical fishway structure, characterized in that the structure is formed so as to reach from the upper end to the lower end of the cylinder. 2. A through hole of a predetermined shape is bored in the fan-shaped main part of the block member, a support that fits into the through hole is erected integrally with the foundation block at the center of the foundation block, and the through hole is installed in the center of the foundation block. 2. The prefabricated cylindrical fishway structure according to claim 1, which is formed by being inserted into a support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57079244A JPS6025562B2 (en) | 1982-05-13 | 1982-05-13 | Assembly type cylindrical fishway structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57079244A JPS6025562B2 (en) | 1982-05-13 | 1982-05-13 | Assembly type cylindrical fishway structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58199915A JPS58199915A (en) | 1983-11-21 |
| JPS6025562B2 true JPS6025562B2 (en) | 1985-06-19 |
Family
ID=13684438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57079244A Expired JPS6025562B2 (en) | 1982-05-13 | 1982-05-13 | Assembly type cylindrical fishway structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6025562B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008525677A (en) * | 2004-12-27 | 2008-07-17 | ナム カン | Fishway block |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61126240A (en) * | 1984-11-21 | 1986-06-13 | 住宅・都市整備公団 | High head attenuator of rainwater |
| JPH06240649A (en) * | 1993-02-22 | 1994-08-30 | Ribaa Furonto Seibi Center | Fish way block, fish way structure consisting of the fish way block, constructing method for the fish way structure, and connecting structure for fish way structure to other waterway structure containing the fish way structure |
| JPH06257125A (en) * | 1993-03-04 | 1994-09-13 | Ribaa Furonto Seibi Center | Fishway block, fishway structure by means of fishway blocks, construction method of fishway structure, and connection structure for connecting fishway structure with the other waterway structure including the fishway structure |
| JP2958544B2 (en) * | 1993-03-05 | 1999-10-06 | 財団法人リバーフロント整備センター | Fishway structure with composite fishway block unit |
| JPH06264429A (en) * | 1993-03-15 | 1994-09-20 | Ribaa Furonto Seibi Center | Fishway block |
| JPH06264430A (en) * | 1993-03-15 | 1994-09-20 | Ribaa Furonto Seibi Center | Deformed block and water way including fishway structure and construction by use thereof |
| EP1447479A1 (en) * | 2003-02-17 | 2004-08-18 | Gerald Gerin | Fishway made of modular elements connected by submerged openings and/or overflows |
| JP2009287208A (en) * | 2008-05-27 | 2009-12-10 | Niigata Univ | Spiral fishladder |
| FR3157878B1 (en) * | 2023-12-28 | 2026-02-27 | Artelia Holding | 3D printed multi-level fish pass |
-
1982
- 1982-05-13 JP JP57079244A patent/JPS6025562B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008525677A (en) * | 2004-12-27 | 2008-07-17 | ナム カン | Fishway block |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58199915A (en) | 1983-11-21 |
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