JP2002095378A - Artificial fishing bank and tool for preventing sliding usable therefor - Google Patents
Artificial fishing bank and tool for preventing sliding usable thereforInfo
- Publication number
- JP2002095378A JP2002095378A JP2000289043A JP2000289043A JP2002095378A JP 2002095378 A JP2002095378 A JP 2002095378A JP 2000289043 A JP2000289043 A JP 2000289043A JP 2000289043 A JP2000289043 A JP 2000289043A JP 2002095378 A JP2002095378 A JP 2002095378A
- Authority
- JP
- Japan
- Prior art keywords
- slip
- artificial reef
- center
- main body
- artificial
- 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
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Artificial Fish Reefs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は人工魚礁とそれに用
いられる滑動防止装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial reef and an anti-slip device used therein.
【０００２】[0002]
【従来の技術】従来は、人工魚礁が波力や潮流による流
体力によって海底を滑る現象、即ち滑動を防止するため
に、 ．魚礁を重くする。 ．魚礁が流れに当たる面積を小さくする（＝より骨細
構造にする）。 ．図８、９に示すように、魚礁の底部にスパイク状の
突起物を設ける等の方法、即ち人工魚礁本体１の底部に
スパイク２を突出させて設ける方法が行われていた。2. Description of the Related Art Conventionally, in order to prevent a phenomenon in which an artificial reef slides on the seabed by a wave force or a fluid force due to a tidal current, that is, in order to prevent sliding, Make the reef heavier. . Reduce the area where the reef hits the stream (= make it more bone-like structure). . As shown in FIGS. 8 and 9, a method of providing a spike-like projection on the bottom of a fish reef, that is, a method of providing a spike 2 projecting from the bottom of an artificial reef main body 1 has been performed.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記
の魚礁を重くする方法では、コンクリートを底部に充填
したりする必要があるが、その充填に時間がかかる上に
作業コストが大きい問題があった。重量を十分に重くし
ようとすると、構造強度上から底部以外の部分の部材の
断面も大きくする必要が発生する場合がある。断面を大
きくすれば更に重くなり、再び構造強度上の問題が生じ
るというイタチごっこが起こる。また製作地から組み立
て・沈設地への運搬費も増大する。また上記の骨細構
造にする方法では、魚類等を集めて滞留させるという魚
礁本来の目的に適合しない。なぜなら、魚礁等を集めて
滞留させる機能は、流体に魚礁が抵抗する程度、即ち刺
激密度に関係すると考えられているからである。一方、
上記のスパイク２等の突起物を人工魚礁本体１の底部
に設ける方法は、魚礁の滑動を防止する１つの手段とし
ては良い方法である。が、スパイク２のような突起物の
場合には、魚礁の滑動を抑止する効果、即ち滑動に対す
る抵抗効果があまり大きくなく、適正な滑動防止効果を
得るためには、図８、９に示すように多数の突起物を設
ける必要があり、取り付け費用や突起物の製作費用等の
コストが高くつく問題があった。However, in the above method for making the fish reef heavier, it is necessary to fill the bottom with concrete, but there is a problem that the filling takes time and the work cost is large. In order to make the weight sufficiently large, it may be necessary to increase the cross section of the member other than the bottom from the viewpoint of structural strength. If the cross section is enlarged, it becomes heavier, and again the problem of structural strength occurs, which causes a weasel play. Also, transportation costs from the production site to the assembly / subsidence site will increase. Further, the above method of forming a fine bone structure does not meet the original purpose of collecting and retaining fish and the like. This is because the function of collecting and retaining fish reefs and the like is considered to be related to the degree to which the reefs resist the fluid, that is, the stimulus density. on the other hand,
The method of providing the projection such as the spike 2 on the bottom of the artificial reef main body 1 is a good method as one means for preventing the reef from sliding. However, in the case of a projection such as the spike 2, the effect of suppressing the sliding of the reef, that is, the effect of resisting the sliding is not so large, and in order to obtain an appropriate sliding preventing effect, as shown in FIGS. It is necessary to provide a large number of protrusions on the surface, and there is a problem that costs such as mounting cost and manufacturing cost of the protrusions are high.
【０００４】そこで、本発明は上記従来の人工魚礁の滑
動防止方法の問題を解消し、製作や取り付けが簡単で、
コストが安く、しかも滑動防止効果の大きい人工魚礁と
それに用いられる滑動防止装置の提供を課題とする。Therefore, the present invention solves the above-mentioned problem of the conventional method for preventing slippage of artificial reefs, and is easy to manufacture and install.
It is an object of the present invention to provide an artificial reef which is inexpensive and has a large anti-slip effect and an anti-slip device used therefor.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決する本発
明の人工魚礁は、海底に沈めた状態で用いる人工魚礁で
あって、立体構造を構成する人工魚礁本体の底面に、長
尺の湾曲した垂下突条片を、底面に沿って且つ底面から
垂下突出させた状態で、複数個、前記底面の中心部から
離れた位置で且つ中心部の周りに略等間隔の位置に、前
記湾曲の開放方向が外向きになるようにして、取り付け
てあることを第１の特徴としている。また本発明の滑動
防止装置は、立体構造を構成する人工魚礁本体の底部に
対して前記底面の中心部から離れた位置に且つ中心部の
周りに相互に略等間隔で取り付けられる複数個の滑動防
止体からなる滑動防止装置であって、各滑動防止体は、
人工魚礁本体の底部に結合されるための結合用片と、結
合された状態で人工魚礁本体の底面に沿って且つ底面か
ら垂下突出する長尺の垂下突条片とを少なくとも有し、
該長尺の垂下突条片はその中央部から両開放端に向けて
９０〜１８０度の開き角度をもって開放する構成とし、
各長尺の垂下突条片の前記開放方向が外向きになるよう
にして人工魚礁本体に取り付けられることを第２の特徴
としている。また本発明の滑動防止装置は、上記第２の
特徴に加えて、各滑動防止体の長尺の垂下突条片は長手
方向の中央を中心に９０度の開き角度で開いていること
を第３の特徴としている。また本発明の滑動防止装置
は、上記第２の特徴に加えて、各滑動防止体の長尺の垂
下突条片は長手方向に中央部と両翼部とからなり、両翼
部は中央部に対して９０〜１８０の開き角度で開いてい
ることを第４の特徴としている。また本発明の滑動防止
装置は、上記第２〜４の何れかに記載の特徴に加えて、
各滑動防止体の長尺の垂下突条片には長手方向に一定の
間隔で複数の垂直リブが設けられていることを第５の特
徴としている。The artificial reef of the present invention for solving the above-mentioned problems is an artificial reef used in a state of being submerged on the seabed, and a long curved surface is provided on the bottom surface of the artificial reef main body constituting a three-dimensional structure. A plurality of the hanging projecting strips are made to protrude along the bottom surface and from the bottom surface, and at a position apart from the center of the bottom surface and at substantially equal intervals around the center, The first feature is that the mounting is performed so that the opening direction is outward. The anti-slip device of the present invention further comprises a plurality of slides attached to the bottom of the artificial reef main body constituting the three-dimensional structure at a position apart from the center of the bottom and at substantially equal intervals around the center. An anti-slip device comprising an anti-slip body, wherein each anti-slip body comprises:
A coupling piece for being coupled to the bottom of the artificial reef main body, and at least a long hanging projecting strip that protrudes downward along the bottom surface of the artificial reef main body in a coupled state from the bottom surface,
The elongated hanging ridge is configured to be opened at an opening angle of 90 to 180 degrees from its center toward both open ends,
The second feature is that each elongated hanging ridge is attached to the artificial reef main body such that the opening direction of the elongated hanging ridge is outward. Further, in addition to the above-mentioned second feature, the anti-slip device of the present invention is characterized in that a long hanging ridge of each anti-slip body is opened at an opening angle of 90 degrees about the center in the longitudinal direction. 3. In addition, in addition to the second feature, the anti-slip device of the present invention has a long hanging ridge of each anti-slip body including a central portion and two wing portions in the longitudinal direction, and the two wing portions are arranged with respect to the central portion. The fourth feature is that the opening is performed at an opening angle of 90 to 180. The anti-slip device of the present invention, in addition to the features described in any of the above second to fourth,
The fifth feature is that a plurality of vertical ribs are provided at regular intervals in the longitudinal direction on the long hanging projection strip of each anti-slip body.
【０００６】[0006]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照しながら更に説明する。図１〜４は本発明の第１
の実施形態を示す図で、図１は滑動防止装置を構成する
要素である滑動防止体の全体斜視図、図２は人工魚礁本
体に滑動防止装置を取り付けた状態の正面図、図３は人
工魚礁本体に滑動防止装置を取り付けた状態の底面図、
図４は人工魚礁本体を構成する１個のセルの斜視図であ
る。また図５〜７は本発明の第２の実施形態を示す図
で、図５は滑動防止体の全体斜視図、図６は人工魚礁本
体に滑動防止装置を取り付けた状態の正面図、図７は人
工魚礁本体に滑動防止装置を取り付けた状態の底面図で
ある。Embodiments of the present invention will be further described below with reference to the drawings. 1 to 4 show a first embodiment of the present invention.
FIG. 1 is an overall perspective view of an anti-slip body which is an element constituting the anti-slip device, FIG. 2 is a front view of a state in which the anti-slip device is attached to the artificial reef main body, and FIG. Bottom view of anti-slip device attached to the reef body,
FIG. 4 is a perspective view of one cell constituting the artificial reef main body. 5 to 7 are views showing a second embodiment of the present invention. FIG. 5 is an overall perspective view of an anti-slip body, FIG. 6 is a front view of a state in which an anti-slip device is attached to an artificial reef main body, FIG. 4 is a bottom view of the state in which the slip prevention device is attached to the artificial reef main body.
【０００７】先ず図１〜４を参照して、本発明の第１の
実施形態を説明する。滑動防止装置を構成する主要要素
である滑動防止体１０は、垂下突条片１１と結合用片１
２と垂直リブ１３とからなる。前記垂下突条片１１に対
して、結合用片１２はアングル材の如く、直角の角度を
持って一体に構成されている。この垂下突条片１１と結
合用片１２からなる滑動防止体１０は長尺に構成され、
長手方向の中央を中心として両開放端に向けて９０度の
開き角度で曲げられている。垂下突条片１１には１乃至
複数の垂直リブ１３が設けられ、その上端は結合用片１
２と結合されている。結合用片１２には人工魚礁本体２
０との結合用ボルト穴１４が適当な間隔で設けられてい
る。First, a first embodiment of the present invention will be described with reference to FIGS. An anti-slip body 10, which is a main component of the anti-slip device, includes a hanging ridge 11 and a connecting piece 1
2 and vertical ribs 13. The connecting piece 12 is integrally formed with the hanging ridge 11 at a right angle, such as an angle material. The anti-slip body 10 including the hanging ridges 11 and the connecting pieces 12 is configured to be long,
It is bent at an opening angle of 90 degrees toward both open ends about the center in the longitudinal direction. One or a plurality of vertical ribs 13 are provided on the hanging ridge 11, and the upper end thereof is
2 Artificial reef body 2
0 are provided at appropriate intervals.
【０００８】前記滑動防止体１０が取り付けられる人工
魚礁本体２０は、立方体形状のセル２１を複数個、相互
に結合して立体化したものである。各セル２１はその６
面の各面において、周辺部２１ａを除く中央部が大きく
開放された窓２１ｂとなっており、魚等が窓２１ｂから
自由に内部に出入りできるようになっている。前記周辺
部２１ａには、セル２１同士の結合を行うため及びセル
２１と前記滑動防止体１０とを結合するための兼用の結
合用ボルト穴２１ｃが設けられている。このセル２１の
結合用ボルト穴２１ｃは、滑動防止体１０が結合される
際には、滑動防止体１０の結合用ボルト穴１４に対応し
て、相互に重なる。The artificial reef body 20 to which the anti-slip body 10 is attached is formed by connecting a plurality of cubic cells 21 to each other to form a three-dimensional structure. Each cell 21 has its 6
On each side of the surface, a central portion excluding the peripheral portion 21a is a greatly opened window 21b, so that fish and the like can freely enter and exit the inside from the window 21b. The peripheral portion 21a is provided with a combined bolt hole 21c for combining the cells 21 and for combining the cell 21 and the anti-slip body 10. When the anti-slip body 10 is connected, the connecting bolt holes 21c of the cell 21 overlap with each other in correspondence with the connecting bolt holes 14 of the anti-slip body 10.
【０００９】滑動防止装置は、本実施形態においては、
図３を参照して、４個の滑動防止体１０を用いて構成し
ている。即ち、人工魚礁本体２０の底面の４隅に位置す
るセル２１に対してそれぞれ１個の滑動防止体１０を適
用し、滑動防止体１０の結合用片１２をセル２１の底面
の周辺部２１ａに接面して、両結合用ボルト穴１４、２
１ｃを位置合わせして、ボルト３０を貫通させ、図示し
ないナットで結合するようにしている。前記各滑動防止
体１０は、その長手方向の中央を中心として９０度の開
き角度θで開いた両翼部が外向きになるように取り付け
ている。より詳しく言えば、各滑動防止体１０は、人工
魚礁本体２０の底面の中心部Ｃ（この点の部分には何も
ない）から一定距離だけ離れた周辺位置で、且つ中心部
Ｃの周りに相互に等間隔で、しかも滑動防止体１０の中
央から両開放端にかけての両翼部が、前記中心部Ｃから
の放射状線Ｌに対して対称となって広がるように取り付
けられている。In the present embodiment, the anti-slip device is
Referring to FIG. 3, the configuration is made using four anti-slip bodies 10. That is, one anti-slip body 10 is applied to each of the cells 21 located at the four corners of the bottom surface of the artificial reef main body 20, and the connecting piece 12 of the anti-slip body 10 is attached to the peripheral portion 21 a of the bottom surface of the cell 21. Being in contact with each other,
1c is aligned, the bolt 30 is made to penetrate, and is connected by a nut (not shown). Each anti-slip body 10 is attached so that both wings opened at an opening angle θ of 90 degrees around the center in the longitudinal direction are outward. More specifically, each anti-slip body 10 is located at a peripheral position that is a fixed distance away from the center portion C (there is nothing at this point) on the bottom surface of the artificial reef main body 20 and around the center portion C. The two wing portions from the center of the anti-slip body 10 to the both open ends are mounted at equal intervals to each other so as to be symmetrical with respect to the radial line L from the center portion C and spread.
【００１０】以上のようにして複数の滑動防止体１０か
らなる滑動防止装置を取り付けた人工魚礁を海底に沈め
ると、人工魚礁の底面から突出した各前記滑動防止体１
０の垂下突条片１１が海底に食い込んだ状態に着底す
る。複数個の垂下突条片１１が人工魚礁本体２０の底面
の中心部Ｃから離れた位置で、中心部Ｃの周りに相互に
等間隔で設けられると共に、各垂下突条片１１の開放方
向が外向きに配置されることで、波力、潮流力による滑
動力がどの方向から人工魚礁に加わっても、この滑動力
を受け止めて、滑動を制止させる。特に各垂下突条片１
１が中央から両開放端に向けて外向きに広がった状態に
配置されているので、人工魚礁が滑動されんとする際に
は、海底の砂等が垂下突条片１１の両開放端側から中央
側へ移動してきて塞き止められる結果、滑動に対しての
抵抗力が急速に上昇して、それ以上の滑動を制止する。
図８、９に示す従来のスパイク２を用いる場合には、砂
等がスパイク２間を容易にすり抜けていくので、滑動に
対する抵抗力が上昇しないのである。また前記垂下突条
片１１に設けられた垂直リブ１３は、滑動防止体１０の
補強の役割をなす他に、人工魚礁が滑動されんとする際
に砂等が垂下突条片１１を側方へすり抜けていくのを阻
止することで、人工魚礁の滑動に対する抵抗力を一層増
大化する。As described above, when the artificial reef to which the anti-slip device including the plurality of anti-skid members 10 is attached is submerged on the seabed, each of the anti-slip devices 1 protruding from the bottom surface of the artificial reef.
The landing projection 11 is set in a state in which the zero drooping ridge 11 bites into the sea floor. A plurality of hanging ridges 11 are provided at regular intervals around the center C at a position away from the center C of the bottom surface of the artificial reef main body 20, and the opening direction of each hanging ridge 11 is By being arranged outward, even if the sliding force due to the wave force and the tidal force is applied to the artificial reef from any direction, the sliding force is received and stopped. Especially each hanging ridge 1
1 is arranged so as to extend outward from the center toward both open ends, so that when the artificial reef is not to be slid, sand on the seabed or the like is suspended on both open ends of the hanging ridges 11. As a result, the sliding resistance is rapidly increased, and further sliding is stopped.
When the conventional spike 2 shown in FIGS. 8 and 9 is used, sand or the like easily passes between the spikes 2, so that the resistance to sliding does not increase. The vertical ribs 13 provided on the hanging ridges 11 serve to reinforce the anti-slip body 10 and, when the artificial reef is to be slid, sand or the like causes the hanging ridges 11 to move laterally. Preventing it from escaping further increases the resistance of artificial reefs to sliding.
【００１１】前記滑動防止体１０の結合用片１２は、人
工魚礁本体２０の底部に結合させるための機能を果せば
よく、従って必ずしも図面に示す既述の形状をしている
必要はない。即ち、垂下突条片１１の全長に沿って結合
用片１２が設けられる必要はない。また垂下突条片１１
に対して直角の角度を持って設けられなくとも、人工魚
礁本体２０に結合できる構成であればよい。また滑動防
止体１０の垂下突条片１１の開き角度θは９０度とした
が、これは矩形の面を有するセル２１に合わせて、取り
付けやすくしたものである。砂等の塞き止め効果を考え
れば、前記開き角度θは９０〜１８０度がよい。また前
記セル２１に設けられる結合用ボルト穴２１ｃは、セル
２１が人工魚礁本体２０の組み立ての際にどの位置、又
はどの向きに配置されても、隣接するセル２１の結合用
ボルト穴２１ｃと重なるように、また垂下突条片１１の
結合用ボルト穴１４と対応して重なるように、セル２１
の全周辺部２１ａに設けるようにしている。前記セル２
１の結合用ボルト穴２１ｃは、コンクリート等で型成形
する際に同時に構成することで容易に得ることができ
る。The connecting piece 12 of the anti-slip body 10 only has to perform the function of connecting to the bottom of the artificial reef body 20, and therefore does not necessarily have to have the above-described shape shown in the drawings. That is, the connecting piece 12 does not need to be provided along the entire length of the hanging ridge 11. In addition, hanging ridge strip 11
Even if it is not provided at a right angle with respect to the artificial fish reef main body 20, any configuration may be used. In addition, the opening angle θ of the hanging ridge 11 of the anti-slip body 10 is set to 90 degrees, which is easy to attach to the cell 21 having a rectangular surface. Considering the blocking effect of sand or the like, the opening angle θ is preferably 90 to 180 degrees. Further, the connecting bolt holes 21c provided in the cells 21 overlap the connecting bolt holes 21c of the adjacent cells 21 irrespective of the position or the orientation of the cells 21 when assembling the artificial reef body 20. So that the cell 21 overlaps with the connecting bolt hole 14 of the hanging ridge 11.
In the entire peripheral portion 21a. Cell 2
The one coupling bolt hole 21c can be easily obtained by forming the bolt hole 21c at the same time as molding with concrete or the like.
【００１２】図５〜７を参照して本発明の第２の実施形
態を説明する。滑動防止装置を構成する主要要素である
滑動防止体４０は、垂下突条片４１と結合用片４２と垂
直リブ４３とからなる。前記垂下突条片４１に対して結
合用片４２は、第１の実施態様の場合と同様に、アング
ル材の如く、直角の角度を持って一体に構成されてい
る。垂下突条片４１と結合用片４２からなる滑動防止体
４０は長尺に構成され、長手方向の中央部とその両翼部
とからなる。垂下突条片４１には１乃至複数の垂直リブ
４３が設けられ、その上端は結合用片４２と結合されて
いる。結合用片４２には人工魚礁本体４０との結合用ボ
ルト穴４４が適当な間隔で設けられている。前記垂下突
条片４１は中央部に対して両翼部がそれぞれ１２０度の
開き角度θを持って構成されている。また垂下突条片４
１の中央部と両翼部の長さは等分としてあり、正六角形
の連続する３辺からなるような形状となっている。この
ような形状とすることで。次に述べる底面が正六角形の
セルの底面に沿って容易に取り付けることができる。A second embodiment of the present invention will be described with reference to FIGS. The anti-slip body 40, which is a main component of the anti-slip device, includes a hanging ridge 41, a connecting piece 42, and a vertical rib 43. As in the case of the first embodiment, the connecting piece 42 is integrally formed with the hanging ridge 41 at a right angle like an angle material. The anti-slip body 40 including the hanging ridge 41 and the connecting piece 42 has a long length, and has a central portion in the longitudinal direction and both wing portions. One or more vertical ribs 43 are provided on the hanging ridge 41, and the upper end thereof is connected to the connecting piece 42. The connecting pieces 42 are provided with bolt holes 44 for connecting to the artificial reef main body 40 at appropriate intervals. The hanging ridge 41 is configured such that both wings have an opening angle θ of 120 degrees with respect to the center. In addition, hanging drooping strip 4
The length of the center part and both wing parts of 1 is equally divided, and has a shape consisting of three continuous sides of a regular hexagon. With such a shape. The bottom surface described below can be easily attached along the bottom surface of the cell having a regular hexagonal shape.
【００１３】前記滑動防止体４０が取り付けられる人工
魚礁本体５０は、正六角筒からなる立体形状のセル５１
を複数個、相互にその側面で結合して立体化したもので
ある。各セル５１はその底面、天面、６個の側面の各面
において、周辺部５１ａを除く中央部が大きく開放され
た窓５１ｂとなっており、魚等が窓５１ｂから自由に内
部に出入りできるようになっている。前記セル５１の底
面、天面、６側面の周辺部５１ａには、結合用ボルト穴
５１ｃが設けられている。この結合用ボルト穴５１ｃの
うち、セル５１の天面と底面にある結合用ボルト穴５１
ｃは上下のセル５１と結合するための穴であり、また人
工魚礁本体５０の底部に位置する複数のセル５１のうち
の幾つかのセル５１の底面の結合用ボルト穴５１ｃは前
記滑動防止体４０の結合用ボルト穴４４に対応して重な
ることになる。このように結合用ボルト穴５１ｃはセル
５１同士の結合と、セル５１と滑動防止体４０との結合
の何れもできるように兼用のボルト穴として構成されて
いる。The artificial reef main body 50 to which the anti-slip body 40 is attached has a three-dimensional cell 51 formed of a regular hexagonal cylinder.
Are connected to each other on their side surfaces to form a three-dimensional structure. Each of the cells 51 has a window 51b with a large opening at the center except for the peripheral portion 51a on each of the bottom surface, the top surface, and the six side surfaces, so that fish and the like can freely enter and exit the inside from the window 51b. It has become. A coupling bolt hole 51c is provided in a peripheral portion 51a on the bottom, top, and six side surfaces of the cell 51. Of the connection bolt holes 51c, the connection bolt holes 51 on the top and bottom surfaces of the cell 51 are provided.
c is a hole for coupling with the upper and lower cells 51, and a coupling bolt hole 51c on the bottom surface of some cells 51 of the plurality of cells 51 located at the bottom of the artificial reef main body 50 is provided with the anti-slip body. 40 overlap with the bolt holes 44 for connection. As described above, the coupling bolt holes 51c are configured as dual-purpose bolt holes so that both the cells 51 can be coupled to each other and the cells 51 can be coupled to the antiskid body 40.
【００１４】滑動防止装置は、本実施形態においては、
図７を参照して、３個の滑動防止体４０を用いて構成し
ている。即ち、人工魚礁本体５０の底面に対して、滑動
防止体４０の結合用片４２をセル５１の底面の周辺部５
１ａに接面して、両結合用ボルト穴４４、５１ｃを位置
合わせして、ボルト６０を貫通させ、図示しないナット
で結合するようにしている。前記各滑動防止体４０は、
その長手方向に中央部とそれぞれ６０度の開き角度θで
開いた両翼部が外向きになるように取り付けている。よ
り詳しく言えば、各滑動防止体４０は、人工魚礁本体５
０の底面の中心部Ｃ（この点の部分には何もない）から
一定距離だけ離れた周辺位置で、且つ中心部Ｃの周りに
相互に１２０度の等間隔で、しかも滑動防止体４０の両
翼部が、前記中心部Ｃから中央部の中心を通る放射状線
に対して対称となって広がるように取り付けられてい
る。In the present embodiment, the anti-slip device is
Referring to FIG. 7, three anti-slip members 40 are used. That is, the connecting piece 42 of the anti-slip body 40 is attached to the bottom 5 of the cell 51 against the bottom of the artificial reef main body 50.
The two bolt holes 44 and 51c for connection are aligned with each other so as to be in contact with 1a, and the bolt 60 is made to penetrate and is connected by a nut (not shown). Each of the slip prevention members 40 is
In the longitudinal direction, the two wings, which are opened at an opening angle θ of 60 degrees with respect to the central part, are mounted so as to face outward. More specifically, each anti-slip body 40 is provided with the artificial reef main body 5.
The center of the bottom surface 0 (there is nothing at this point) is at a peripheral position separated by a fixed distance, and around the center C at an equal interval of 120 degrees from each other. The two wings are mounted so as to be symmetrical with respect to a radial line passing from the center C to the center of the center.
【００１５】以上のようにして複数の滑動防止体４０か
らなる滑動防止装置を取り付けた人工魚礁を海底に沈め
ると、人工魚礁の底面から突出した各前記滑動防止体４
０の垂下突条片４１が海底に食い込んだ状態で着底す
る。複数個の垂下突条片４１が人工魚礁本体５０の底面
の中心部Ｃから離れた位置で、且つ中心部Ｃの周りに相
互に等間隔で設けられると共に、各垂下突条片４１の開
放方向が外向きにされて配置されることで、波力、潮流
力による滑動力がどの方向から人工魚礁に加わっても、
この滑動力を受け止めて、滑動を制止させる。特に各垂
下突条片４１が中央部とそこから外向きに広がった両翼
部とからなるので、人工魚礁が滑動されんとする際に
は、海底の砂等が垂下突条片４１の両翼部に沿って中央
部に移動してきて塞き止められる結果、滑動に対しての
抵抗力が急速に上昇して、それ以上の滑動を制止する。
よって既述したように従来のスパイク２を用いる場合に
比べて、砂等が容易にすり抜けていくのを制止すること
で、滑動に対する抵抗力を十分に向上させることができ
るのである。また前記垂下突条片４１に設けられた垂直
リブ４３は、滑動防止体４０の補強の役割をなす他に、
人工魚礁が滑動されんとする際に砂等が垂下突条片４１
を側方へすり抜けていくのを阻止することで、人工魚礁
の滑動に対する抵抗力を一層増大化する点は、上記第１
の実施形態の場合と同様である。As described above, when the artificial reef to which the anti-slip device including the plurality of anti-skid devices 40 is attached is submerged on the seabed, each of the anti-slip devices 4 protruding from the bottom surface of the artificial fish reef.
The landing is made in a state where the zero hanging ridge 41 bites into the sea floor. A plurality of hanging ridges 41 are provided at a position apart from the center C of the bottom surface of the artificial reef main body 50 and at equal intervals around the center C, and the opening direction of each hanging ridge 41 is provided. Is placed facing outward, so that no matter what direction the sliding force due to wave force and tidal force is applied to the artificial reef,
The sliding force is received to stop the sliding. In particular, since each hanging ridge 41 has a central portion and two wings extending outward from the central portion, when the artificial reef is to be slid, sand or the like on the seabed may have wings of the hanging ridge 41. As a result, the sliding resistance is rapidly increased, and further sliding is stopped.
Therefore, as described above, the resistance to sliding can be sufficiently improved by preventing the sand or the like from easily passing through as compared with the case where the conventional spike 2 is used. In addition, the vertical rib 43 provided on the hanging ridge 41 serves to reinforce the anti-slip body 40,
When the artificial reef is to be slid, the sand etc.
The point that the resistance to sliding of the artificial reef is further increased by preventing the fish from slipping sideways.
This is the same as the embodiment.
【００１６】前記滑動防止体４０の結合用片４２は、人
工魚礁本体５０の底部に結合させるための機能を果せば
よく、従って必ずしも垂下突条片４１の全長に沿って結
合用片４２が設けられる必要はない。また垂下突条片４
１に対して直角の角度を持って設けられなくとも、人工
魚礁本体５０に結合できる構成であればよい。また滑動
防止体４０の垂下突条片４１の中央部に対する両翼部の
それぞれの開き角度θは１２０度としたが、これは正六
角形の底面を有するセル５１に合わせて、取り付けやす
くしたものである。砂等の塞き止め効果を考えれば、前
記開き角度θは９０〜１８０度とすることができる。ま
た前記セル５１に設けられる結合用ボルト穴５１ｃは、
セル５１が人工魚礁本体５０の組み立ての際にどの位
置、又はどの向きに配置されても、隣接するセル５１の
結合用ボルト穴５１ｃと重なるように、また垂下突条片
４１の結合用ボルト穴４４と対応して重なるように、セ
ル５１の底面、天面、６側面の全周辺部５１ａに設ける
ようにしている。前記セル５１の結合用ボルト穴５１ｃ
は、コンクリート等で型成形する際に同時に構成するこ
とで容易に得ることができる。また上記第１〜２の実施
形態において、垂下突条片１１、４１は中央或いは中央
部から両翼が一定の開き角度で屈曲されているが、長尺
の垂下突条片は中央付近から対称に徐々に湾曲された形
状であってもよい。また左右両翼部の長さは同じ長さが
好ましいが、異なっていてもよい。The connecting piece 42 of the anti-slip body 40 only has to perform a function of connecting to the bottom of the artificial reef main body 50. Therefore, the connecting piece 42 is not necessarily formed along the entire length of the hanging ridge 41. It need not be provided. In addition, hanging drooping strip 4
Even if it is not provided at a right angle to 1, any configuration that can be connected to the artificial reef main body 50 may be used. In addition, the opening angle θ of each of the two wings with respect to the center of the hanging ridge 41 of the anti-slip body 40 is set to 120 degrees, which is easy to attach to the cell 51 having a regular hexagonal bottom surface. . Considering the effect of blocking sand or the like, the opening angle θ can be 90 to 180 degrees. The connecting bolt holes 51c provided in the cell 51 are:
Regardless of the position or the orientation of the cell 51 when assembling the artificial reef main body 50, the connecting bolt hole of the hanging ridge 41 is overlapped with the connecting bolt hole 51 c of the adjacent cell 51. The cells 51 are provided on all the peripheral portions 51a of the bottom surface, the top surface, and the six side surfaces so as to overlap with each other. Bolt hole 51c for connection of the cell 51
Can be easily obtained by simultaneously configuring when molding with concrete or the like. In the first and second embodiments, the hanging ridges 11 and 41 have both wings bent at a fixed opening angle from the center or the center, but the long hanging ridges are symmetrical from near the center. It may have a gradually curved shape. The lengths of the left and right wings are preferably the same, but may be different.
【００１７】[0017]
【発明の効果】本発明は以上の構成、作用よりなり、請
求項１に記載の人工魚礁によれば、海底に沈めた状態で
用いる人工魚礁であって、立体構造を構成する人工魚礁
本体の底面に、長尺の湾曲した垂下突条片を、底面に沿
って且つ底面から垂下突出させた状態で、複数個、前記
底面の中心部から離れた位置で且つ中心部の周りに略等
間隔の位置に、前記湾曲の開放方向が外向きになるよう
にして、取り付けてあるので、底部に突起状のスパイク
を設ける場合に比べて、滑動に対する抵抗力を格段に向
上させた人工魚礁を提供することができる。しかもスパ
イクを取り付ける場合はかなりの量を取り付けなければ
効果が少ないのに比べ、ボルト等による取り付け個所数
が少なく、作業も容易で短時間に低コストで行うことが
できる。また請求項２に記載の人工魚礁に用いられる滑
動防止装置によれば、立体構造を構成する人工魚礁本体
の底部に対して前記底面の中心部から離れた位置に且つ
中心部の周りに相互に略等間隔で取り付けられる複数個
の滑動防止体からなる滑動防止装置であって、各滑動防
止体は、人工魚礁本体の底部に結合されるための結合用
片と、結合された状態で人工魚礁本体の底面に沿って且
つ底面から垂下突出する長尺の垂下突条片とを少なくと
も有し、該長尺の垂下突条片はその中央部から両開放端
に向けて９０〜１８０度の開き角度をもって開放する構
成とし、各長尺の垂下突条片の前記開放方向が外向きに
なるようにして人工魚礁本体に取り付けられることとし
たので、人工魚礁本体の底面の中心から離れた位置で且
つ中心の周りに略等間隔で沿って突出するよう結合さ
れ、且つ９０〜１８０度の開放方向が外向きにされた複
数の垂下突条片を有する滑動防止装置によって、人工魚
礁本体に対する周囲からの波力や潮流による滑動力を十
分な効果をもって阻止することができ、人工魚礁本体の
滑動を防止することができる。本滑動防止装置の場合
は、スパイクを取り付ける場合に比べて、砂等がスパイ
クの間をすり抜けていくといったことがなく、格段の滑
動阻止力を発揮することができる。しかもスパイクの場
合には多数の本数を取り付けなければ効果を発揮しない
のに対し、十分に少ない取り付け個所をもって、より短
時間で、より少ない作業コストで人工魚礁本体への取り
付けを行うことができる。また請求項３に記載の滑動防
止装置によれば、上記請求項２に記載の構成による効果
に加えて、各滑動防止体の長尺の垂下突条片は長手方向
の中央を中心に９０度の開き角度で開いていることとし
たので、立法体形状のセル等、底面が矩形となっている
セルの組み合わせから構成された人工魚礁本体に対し
て、９０度に開いた滑動防止体を非常に容易に取り付け
ることができる。しかも９０度の開放方向を外向きに容
易に配置することができる。即ち、立法体形状を呈する
セルからなる人工魚礁本体に適応して、その取り付けが
容易で、しかも滑動防止効果を大とすることができる。
また請求項４に記載の滑動防止装置によれば、上記請求
項２に記載の構成による効果に加えて、各滑動防止体の
長尺の垂下突条片は長手方向に中央部と両翼部とからな
り、両翼部は中央部に対して９０〜１８０の開き角度で
開いていることとしたので、底面が正多角形をしたセル
等を組み合わせてなる人工魚礁本体に対して、多角形の
一部にあわせた形状の垂下突条片からなる滑動防止体と
することで、人工魚礁本体の底面の周辺のセルに対し
て、非常に容易に取り付けることができ、しかもその開
放方向を外向きに容易に配置することができる。即ち、
正多角形の底面形状を呈するセルからなる人工魚礁本体
に適応して、その取り付けが容易で、しかも滑動防止効
果を大とすることができる。また請求項５に記載の滑動
防止装置によれば、上記請求項２〜４に記載の構成によ
る効果に加えて、各滑動防止体の長尺の垂下突条片には
長手方向に一定の間隔で複数の垂下リブが設けられてい
ることとしたので、滑動防止体の強度を上げると共に、
人工魚礁が滑動されんとする際に砂等が垂下突条片を側
方へすり抜けていくのを阻止することができ、人工魚礁
の滑動に対する抵抗力を一層上げることができる。According to the artificial fish reef of the present invention, the artificial fish reef used in the state of being sunk on the seabed, wherein the artificial reef main body having a three-dimensional structure is provided. On the bottom surface, a plurality of long curved hanging ridges are formed along the bottom surface and protrude from the bottom surface, and a plurality thereof are provided at a position apart from the center of the bottom surface and at substantially equal intervals around the center. The artificial fish reef is provided in such a manner that the opening direction of the curve is directed outward, so that the resistance to sliding is remarkably improved as compared with the case where a protruding spike is provided at the bottom. can do. In addition, when a spike is attached, the effect is small unless a considerable amount is attached. In contrast, the number of attachment points with bolts and the like is small, and the work can be performed easily, in a short time and at low cost. According to the anti-slip device used in the artificial reef according to claim 2, the bottom of the artificial reef main body constituting the three-dimensional structure is located at a position away from the center of the bottom and around the center. An anti-slip device comprising a plurality of anti-skid bodies attached at substantially equal intervals, each anti-slip body including a connecting piece for being connected to the bottom of the artificial reef body, and an artificial reef in a connected state. At least a long hanging ridge that protrudes from the bottom along the bottom surface of the main body, and the long hanging ridge extends 90-180 degrees from its center toward both open ends. It is configured to be opened at an angle, and it is attached to the artificial reef main body so that the opening direction of each elongated hanging ridge is outward, so that it is located away from the center of the bottom of the artificial fish reef main body And at approximately equal intervals around the center Anti-slip device having a plurality of hanging ridges which are connected so as to protrude, and open directions of 90 to 180 degrees are directed outward, so that the slip force due to wave force and tide from the surroundings to the artificial reef main body can be reduced. It can be prevented with a sufficient effect, and the sliding of the artificial reef main body can be prevented. In the case of the anti-slip device, sand and the like do not pass through between the spikes as compared with the case where spikes are attached, and a remarkable anti-slip force can be exhibited. Moreover, in the case of spikes, the effect is not exhibited unless a large number of spikes are attached. On the other hand, the spikes can be attached to the artificial reef main body in a shorter time and at a lower operation cost with a sufficiently small number of attachment points. According to the anti-slip device of the third aspect, in addition to the effect of the configuration of the second aspect, the long hanging ridge of each anti-slip body is 90 degrees about the center in the longitudinal direction. The anti-slip body opened at 90 degrees to the artificial reef body composed of a combination of cells with a rectangular bottom, such as a cube-shaped cell, Can be easily attached to Moreover, the 90-degree opening direction can be easily arranged outward. In other words, it is suitable for an artificial reef main body composed of cells having a cubic shape, so that it can be easily attached and the sliding prevention effect can be increased.
According to the anti-slip device of the fourth aspect, in addition to the effect of the configuration of the second aspect, the long hanging ridge of each anti-slip body has a central portion and two wing portions in the longitudinal direction. The wings are open at an angle of 90 to 180 with respect to the center, so that the artificial reef body composed of cells and the like whose bottom surface is a regular polygon is With the anti-slip body consisting of hanging ridges shaped according to the part, it can be very easily attached to the cells around the bottom of the artificial reef main body, and the opening direction is outward. Can be easily arranged. That is,
It is suitable for an artificial reef main body composed of cells having a regular polygonal bottom surface shape, and can be easily attached, and the sliding prevention effect can be increased. According to the anti-slip device of claim 5, in addition to the effect of the configuration of the above-mentioned claims 2 to 4, in addition to the long hanging ridge of each anti-slip body, a constant spacing in the longitudinal direction As it was decided that a plurality of hanging ribs were provided, while increasing the strength of the slip prevention body,
When the artificial reef is slid, the sand and the like can be prevented from slipping sideways through the hanging ridges, and the resistance to sliding of the artificial reef can be further increased.
【図１】第１の実施形態を示し、滑動防止装置を構成す
る要素である滑動防止体の全体斜視図である。FIG. 1 shows the first embodiment, and is an overall perspective view of a slip prevention body which is an element constituting a slip prevention device.
【図２】第１の実施形態を示し、人工魚礁本体に滑動防
止装置を取り付けた状態の正面図である。FIG. 2 shows the first embodiment, and is a front view of a state in which an anti-slip device is attached to an artificial reef main body.
【図３】第１の実施形態を示し、人工魚礁本体に滑動防
止装置を取り付けた状態の底面図である。FIG. 3 shows the first embodiment, and is a bottom view in a state where a slip prevention device is attached to an artificial reef main body.
【図４】第１の実施形態を示し、人工魚礁本体を構成す
る１個のセルの斜視図である。FIG. 4 shows the first embodiment, and is a perspective view of one cell constituting an artificial reef main body.
【図５】第２の実施形態を示し、滑動防止装置を構成す
る要素である滑動防止体の全体斜視図である。FIG. 5 shows the second embodiment, and is an overall perspective view of a slip prevention body which is an element constituting a slip prevention device.
【図６】第２の実施形態を示し、人工魚礁本体に滑動防
止装置を取り付けた状態の正面図である。FIG. 6 shows the second embodiment, and is a front view of a state in which an anti-slip device is attached to an artificial reef main body.
【図７】第２の実施形態を示し、人工魚礁本体に滑動防
止装置を取り付けた状態の底面図である。FIG. 7 shows the second embodiment, and is a bottom view in a state where a slip prevention device is attached to an artificial reef main body.
【図８】人工魚礁本体に従来の滑動防止装置であるスパ
イク状の突起物を取り付けた状態の正面図である。FIG. 8 is a front view of a state in which a spike-shaped projection as a conventional anti-slip device is attached to the artificial reef main body.
【図９】人工魚礁本体に従来の滑動防止装置であるスパ
イク状の突起物を取り付けた状態の底面図である。FIG. 9 is a bottom view of a state in which a spike-shaped projection, which is a conventional slip prevention device, is attached to the artificial reef main body.
１０ 滑動防止体 １１ 垂下突条片 １２ 結合用片 １３ 垂直リブ １４ 結合用ボルト穴 ２０ 人工魚礁本体 ２１ セル ２１ａ 周辺部 ２１ｂ 窓 ２１ｃ 結合用ボルト穴 ３０ ボルト ４０ 滑動防止体 ４１ 垂下突条片 ４２ 結合用片 ４３ 垂直リブ ４４ 結合用ボルト穴 ５０ 人工魚礁本体 ５１ セル ５１ａ 周辺部 ５１ｂ 窓 ５１ｃ 結合用ボルト穴 Ｃ 中心部 θ 開き角度 Ｌ 放射状線 DESCRIPTION OF SYMBOLS 10 Anti-slip body 11 Hanging strip 12 Connecting piece 13 Vertical rib 14 Bolt hole for connection 20 Artificial reef body 21 Cell 21a Peripheral part 21b Window 21c Bolt hole for connecting 30 Bolt 40 Anti-slip body 41 Hanging strip 42 Connecting Piece 43 Vertical rib 44 Bolt hole for connection 50 Artificial reef main body 51 Cell 51a Peripheral part 51b Window 51c Bolt hole for connection C Center part θ Opening angle L Radial wire
Claims (5)
って、立体構造を構成する人工魚礁本体の底面に、長尺
の湾曲した垂下突条片を、底面に沿って且つ底面から垂
下突出させた状態で、複数個、前記底面の中心部から離
れた位置で且つ中心部の周りに略等間隔の位置に、前記
湾曲の開放方向が外向きになるようにして、取り付けて
あることを特徴とする人工魚礁。1. An artificial fish reef used in a state of being submerged on the seabed, wherein a long curved hanging ridge is formed on a bottom surface of an artificial fish reef body constituting a three-dimensional structure along the bottom surface and protrudes from the bottom surface. In this state, a plurality of the curved portions are attached at positions separated from the center of the bottom surface and at substantially equal intervals around the center so that the opening direction of the curve is outward. Artificial reef that is characteristic.
に対して前記底面の中心部から離れた位置に且つ中心部
の周りに相互に略等間隔で取り付けられる複数個の滑動
防止体からなる滑動防止装置であって、各滑動防止体
は、人工魚礁本体の底部に結合されるための結合用片
と、結合された状態で人工魚礁本体の底面に沿って且つ
底面から垂下突出する長尺の垂下突条片とを少なくとも
有し、該長尺の垂下突条片はその中央部から両開放端に
向けて９０〜１８０度の開き角度をもって開放する構成
とし、各長尺の垂下突条片の前記開放方向が外向きにな
るようにして人工魚礁本体に取り付けられることを特徴
とする滑動防止装置。2. An anti-slip body which is attached to a bottom of an artificial reef main body constituting a three-dimensional structure at a position distant from a center of the bottom and at substantially equal intervals around the center. An anti-slip device, wherein each anti-slip body is provided with a connecting piece for being connected to a bottom portion of the artificial reef main body, and a long elongate projecting from and along the bottom surface of the artificial reef main body in a connected state. , And the elongated hanging ridges are configured to be opened at an opening angle of 90 to 180 degrees from a central portion thereof toward both open ends, and each elongated hanging ridge is provided. A device for preventing slippage, wherein the piece is attached to the artificial reef main body such that the opening direction of the piece is outward.
方向の中央を中心に９０度の開き角度で開いていること
を特徴とする請求項２に記載の滑動防止装置。3. The anti-skid device according to claim 2, wherein the elongated hanging ridge of each anti-slip body is opened at an opening angle of 90 degrees about the center in the longitudinal direction.
方向に中央部と両翼部とからなり、両翼部は中央部に対
して９０〜１８０の開き角度で開いていることを特徴と
する請求項２に記載の滑動防止装置。4. A long elongate hanging strip of each anti-slip body comprises a central portion and both wing portions in a longitudinal direction, and both wing portions are opened at an opening angle of 90 to 180 with respect to the central portion. The anti-slip device according to claim 2, characterized in that:
手方向に一定の間隔で複数の垂直リブが設けられている
ことを特徴とする請求項２〜４の何れかに記載の滑動防
止装置。5. The elongate hanging strip of each anti-slip body is provided with a plurality of vertical ribs at regular intervals in the longitudinal direction. Anti-slip device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000289043A JP4649031B2 (en) | 2000-09-22 | 2000-09-22 | Artificial fish reef and anti-skid device used for it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000289043A JP4649031B2 (en) | 2000-09-22 | 2000-09-22 | Artificial fish reef and anti-skid device used for it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002095378A true JP2002095378A (en) | 2002-04-02 |
| JP4649031B2 JP4649031B2 (en) | 2011-03-09 |
Family
ID=18772519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000289043A Expired - Fee Related JP4649031B2 (en) | 2000-09-22 | 2000-09-22 | Artificial fish reef and anti-skid device used for it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4649031B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015204773A (en) * | 2014-04-18 | 2015-11-19 | 国立大学法人 鹿児島大学 | Fish bank block and underwater structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5542539A (en) * | 1978-09-20 | 1980-03-25 | Hokuei Kensetsu Kk | Artificial fish bank |
| JPS6140872A (en) * | 1984-07-31 | 1986-02-27 | 京セラ株式会社 | Silicon nitride sintered body |
| JPS61231927A (en) * | 1985-04-08 | 1986-10-16 | 三井建設株式会社 | Artificial fish bank |
| JPH0412852A (en) * | 1990-05-02 | 1992-01-17 | Toppan Printing Co Ltd | Multicolor cylinder press |
| JPH06276881A (en) * | 1993-03-23 | 1994-10-04 | Koji Mitsuo | Imitation stone and structure |
| JPH0851884A (en) * | 1994-08-11 | 1996-02-27 | Asahi Chem Ind Co Ltd | Preventing device for net caught by fish gathering bank |
| JPH0880139A (en) * | 1994-09-14 | 1996-03-26 | Kaiyo Kensetsu Kk | Artificial fish reef for common octopus |
| JPH099817A (en) * | 1995-06-30 | 1997-01-14 | Iwate Pref Gov | Apparatus for preventing slide and sink of fishing ground construction to be settled in shallow sea |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0412852U (en) * | 1990-05-25 | 1992-01-31 |
-
2000
- 2000-09-22 JP JP2000289043A patent/JP4649031B2/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5542539A (en) * | 1978-09-20 | 1980-03-25 | Hokuei Kensetsu Kk | Artificial fish bank |
| JPS6140872A (en) * | 1984-07-31 | 1986-02-27 | 京セラ株式会社 | Silicon nitride sintered body |
| JPS61231927A (en) * | 1985-04-08 | 1986-10-16 | 三井建設株式会社 | Artificial fish bank |
| JPH0412852A (en) * | 1990-05-02 | 1992-01-17 | Toppan Printing Co Ltd | Multicolor cylinder press |
| JPH06276881A (en) * | 1993-03-23 | 1994-10-04 | Koji Mitsuo | Imitation stone and structure |
| JPH0851884A (en) * | 1994-08-11 | 1996-02-27 | Asahi Chem Ind Co Ltd | Preventing device for net caught by fish gathering bank |
| JPH0880139A (en) * | 1994-09-14 | 1996-03-26 | Kaiyo Kensetsu Kk | Artificial fish reef for common octopus |
| JPH099817A (en) * | 1995-06-30 | 1997-01-14 | Iwate Pref Gov | Apparatus for preventing slide and sink of fishing ground construction to be settled in shallow sea |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015204773A (en) * | 2014-04-18 | 2015-11-19 | 国立大学法人 鹿児島大学 | Fish bank block and underwater structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4649031B2 (en) | 2011-03-09 |
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