JPH0339028Y2 - - Google Patents
Info
- Publication number
- JPH0339028Y2 JPH0339028Y2 JP1986174664U JP17466486U JPH0339028Y2 JP H0339028 Y2 JPH0339028 Y2 JP H0339028Y2 JP 1986174664 U JP1986174664 U JP 1986174664U JP 17466486 U JP17466486 U JP 17466486U JP H0339028 Y2 JPH0339028 Y2 JP H0339028Y2
- Authority
- JP
- Japan
- Prior art keywords
- seaweed
- frame
- artificial
- fish
- seawater
- 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
- 241001474374 Blennius Species 0.000 claims description 82
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 38
- 239000013535 sea water Substances 0.000 claims description 27
- 229910052742 iron Inorganic materials 0.000 claims description 19
- 230000001464 adherent effect Effects 0.000 claims description 15
- 239000004575 stone Substances 0.000 claims description 15
- 241000251468 Actinopterygii Species 0.000 description 27
- 239000000463 material Substances 0.000 description 7
- 235000015170 shellfish Nutrition 0.000 description 7
- 244000005700 microbiome Species 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 230000001617 migratory effect Effects 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 241000512259 Ascophyllum nodosum Species 0.000 description 1
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- 244000132059 Carica parviflora Species 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000257465 Echinoidea Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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)
- Farming Of Fish And Shellfish (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は疑似海藻を取付けた人工魚礁に関す
る。[Detailed description of the invention] [Field of industrial application] The present invention relates to an artificial fish reef to which simulated seaweed is attached.
近年魚類の生息場所である海藻の繁茂する岩盤
堆がトロール漁法により荒廃し、魚類の生息場所
が減少する傾向に対応するため、人工魚礁の設置
が盛んに行われており、また人工魚礁について
種々の提案がなされている。このうち最も広く行
われているものは容易に大量生産が可能なコンク
リートブロツク魚礁であり、これに関連して実公
昭36−6479号公報、実公昭36−330号公報に示さ
れるようにコンクリートブロツクに合成樹脂製の
人工海藻を植付けて海底に設置するという提案も
なされている。
In recent years, in order to cope with the trend of decreasing habitats for fish due to the devastation of bedrock embankments where seaweed grows, which is the habitat of fish, due to trawling methods, the installation of artificial fish reefs has been actively carried out. proposals have been made. The most widely used of these is concrete block fish reefs, which can be easily mass-produced. There is also a proposal to plant artificial seaweed made of synthetic resin and place it on the ocean floor.
このようなコンクリートブロツク魚礁は生産が
容易ではあるが、潮流、波浪の激しい海底におい
てはコンクリートブロツク下部に衝突する潮流に
よつてコンクリートブロツクの底の砂がえぐられ
てコンクリートブロツクが転倒したり、砂で埋没
して、魚礁としての機能を果せなくなることが
往々にしてある。またコンクリートブロツク中の
石灰などのアルカリ分が溶出し海藻類の発生を妨
げるという欠点も報告されており、コンクリート
ブロツク魚礁は期待されるような効果を充分発揮
していないのが現状である。
Such concrete block fish reefs are easy to produce, but on the ocean floor where there are strong currents and waves, the sand at the bottom of the concrete block is gouged out by the current that collides with the bottom of the concrete block, causing the concrete block to topple over or become sandy. In many cases, the reefs become buried and are no longer able to function as fish reefs. In addition, it has been reported that alkaline content such as lime in the concrete blocks dissolves and prevents the growth of seaweed, so concrete block fish reefs are currently not producing the expected effects.
よつて、本考案の目的は、上記従来のコンクリ
ートブロツク魚礁の欠点を除去した新規な疑似海
藻付き人工魚礁を提供するにある。 Therefore, an object of the present invention is to provide a novel artificial reef with simulated seaweed that eliminates the drawbacks of the conventional concrete block reef.
上記目的を達成するため、本考案にかかる疑似
海藻付き人工魚礁は、上面を開放するとともに側
部および底部の空〓を有するカゴ状の鉄製枠体中
に、ブロツク状の海藻付着体を上下方向に相互に
重ならないようにして複数個配設し、該複数個の
海藻付着体相互間の間〓および該海藻付着体と枠
体の間の間〓には枠体の床面から海藻付着体の頂
部に達する海水の流通路を形成するとともに、各
流通路が相互に連通するようにし、該各間〓には
その間〓に収まる大きさの石を適当の高さに敷き
つめ、かつ該海藻付着体の頂部には人工の疑似海
藻を取付けたことを特徴とする。
In order to achieve the above object, the artificial fish reef with simulated seaweed according to the present invention has a cage-shaped iron frame having an open top surface and hollow sides and bottom, and a block-shaped seaweed attached body is placed in the vertical direction. A plurality of seaweed deposits are placed between the plurality of seaweed deposits and between the seaweed deposits and the frame from the floor surface of the frame. In addition to forming a flow path for seawater to reach the top of the seawater, each flow path is made to communicate with each other, and stones of a size that fits between them are laid at an appropriate height between each flow path, and the seaweed is adhered to. It is characterized by artificial seaweed attached to the top of its body.
複数の海藻付着体が鉄製枠体の中に配置されて
いるので、これらの海藻付着体は潮流、波浪によ
つて底部の砂がえぐられて倒れたり、砂で埋つた
りするおそれがない。さらに鉄製枠体は側部およ
び底部に多数の空隙を有するカゴ状に構成されて
おり、かつ各海藻付着体相互間には海水の流通路
が形成されているので、これら鉄製枠体の空隙と
海藻付着体相互間の海水流通路とを通つて海水が
複雑な動きをしながら流れるので、海水が枠体内
に滞留する時間が長くなり、海水中を運ばれるプ
ランクトン等の微生物や貝類等が海藻付着体に自
然に付着繁茂した海藻および海藻付着体に人工的
に取付けられた疑似海藻に付着する確率が高ま
る。
Since a plurality of seaweed-attached bodies are placed inside the iron frame, there is no risk that these seaweed-attached bodies will fall down due to the sand at the bottom being gouged out by tides and waves, or be buried in sand. Furthermore, the iron frame has a cage-like structure with many voids on the sides and bottom, and seawater flow passages are formed between each seaweed adhering body. As seawater flows through the seawater flow paths between the seaweed adherents in a complicated manner, the time the seawater stays inside the frame increases, and microorganisms such as plankton and shellfish carried in the seawater become seaweed. The probability of adhesion to seaweed that has grown naturally attached to the attached body and artificial seaweed that has been artificially attached to the attached seaweed body is increased.
したがつて回遊魚にとつて良好な餌場が形成さ
れる。また各海藻付着体間の海水流通路は魚にと
つて適当なかくれ場所を提供する。さらに鉄製の
枠体は徐々に腐蝕するが、それによつて生じた鉄
錆に対し海藻類や貝類の付着が極めて良いので、
魚の餌場としての条件を一層向上させる。 Therefore, a good feeding ground is created for migratory fish. In addition, the seawater flow passages between the seaweed deposits provide suitable hiding places for fish. Furthermore, although the iron frame gradually corrodes, seaweed and shellfish can adhere to it very well against the resulting iron rust.
Further improve conditions as a feeding ground for fish.
以下添付図面に示す実施例について本考案を詳
細に説明する。
The present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.
第１図は本考案にかかる人工魚礁の斜視図、第
２図はその正面図、第３図はその平面図である。
なお、第３図においては、繁雑さを避けるため疑
似海藻の葉部を省略して示してある。 FIG. 1 is a perspective view of an artificial reef according to the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a plan view thereof.
In addition, in FIG. 3, the leaves of the pseudo seaweed are omitted to avoid complexity.
本考案にかかる人工魚礁１において、平面視長
方形の鉄製枠体２は複数のアングル材材３を相互
に溶接して枠組を作り、これに鉄棒４を縦横に組
合せて各鉄棒の各端部をアングル材３に溶接し、
さらに各鉄棒同志の交点を溶接してなるものであ
つて、全体として上面が開放し側部および底部に
多数の空隙１４を有するカゴ状の構造となつてい
る。枠体２には第２図中長辺下端部の両側のアン
グル材３ａの下面に第８図に示すようなアングル
材からなる一対の脚部１２が設けられており、砂
地の中にこの一対の脚部１２が埋入されて枠体２
が安定して海底に設置されるように構成されてい
る。なお、符号１３は枠体２を沈設するために吊
下する際に使用する把手である。 In the artificial reef 1 according to the present invention, the iron frame 2 is rectangular in plan view by welding a plurality of angle members 3 to each other to form a frame, and the iron rods 4 are combined vertically and horizontally to this frame, and each end of each iron rod is attached to the frame. Welded to angle material 3,
Furthermore, it is made by welding the intersections of the respective iron bars, and has an overall cage-like structure with an open top and a large number of voids 14 at the sides and bottom. The frame body 2 is provided with a pair of legs 12 made of angle materials as shown in FIG. 8 on the lower surface of the angle materials 3a on both sides of the lower end of the long side in FIG. The legs 12 of the frame body 2 are embedded.
It is constructed so that it can be stably installed on the seabed. In addition, the code|symbol 13 is a handle used when hanging the frame 2 in order to sink it.
この枠体２の中には複数個（図示の実施例では
６個）のブロツク状の海藻付着体５が配設されて
いる。本実施例においては、これらの海藻付着体
５はそれぞれ自然石からなり、側壁部に凹凸面を
有する。自然石としてはアルカリ分や金属成分が
表面に浸出しないような岩石が好ましく、たとえ
ば安山岩、花崗岩等が好適である。海藻付着体５
の側壁部の凹凸面は海藻の付着を促進し魚貝類の
かくれ場所を提供するもので、平坦な石材を削つ
て形成してもよいが、自然の岩をダイナマイトで
爆破して得た石塊をおおまかにほぼ立方形に成形
したものまたはまつたく成形しないもの用いれ
ば、このような石塊はなんら特別の加工を経ない
でも側壁に凹凸面を有しているので便利である。
これら海藻付着体５相互間には適宜の間隔が置か
れ、この間隔は海水の流通路６を形成している。
また海藻付着体５と枠体２の間にも間隔を持たせ
て海水の流通路７を形成することが好ましい。 Inside this frame 2, a plurality (six in the illustrated embodiment) of block-shaped seaweed adherents 5 are disposed. In this embodiment, each of these seaweed adherents 5 is made of natural stone and has an uneven surface on the side wall portion. As the natural stone, it is preferable to use a rock that does not allow alkaline content or metal components to leach onto the surface, and for example, andesite, granite, etc. are suitable. Seaweed adhering body 5
The uneven surface of the side wall promotes the adhesion of seaweed and provides a hiding place for fish and shellfish.Although it may be formed by carving a flat stone, it is also possible to form a stone block obtained by blasting natural rock with dynamite. It is convenient to use a block of stone formed into a roughly cubic shape or one that is not formed into a square shape, since such a block of stone has an uneven side wall without any special processing.
Appropriate intervals are placed between these seaweed adherents 5, and this interval forms a seawater flow path 6.
Further, it is preferable to provide a space between the seaweed adhered body 5 and the frame 2 to form a seawater flow path 7.
これら海藻付着体５はそれ自体に自然の海藻を
付着繁茂させるものであるが、海藻の繁茂には時
間を要し、また海藻は、春に生え秋には枯れるも
のが多いので、一年を通してプランクトンの付着
を確保しこれに伴う回遊魚の誘導を促進するため
に、人工の疑似海藻８が各海藻付着体５に取付け
られている。疑似海藻８を自然石からなる海藻付
着体５に取付けられるには、海藻付着体５の上部
に穴を穿ち、疑似海藻８の根部をこの穴に埋込ん
だ後モルタルを穴に注入して固めればよい。疑似
海藻としては、ポリエチレン、ポリスチロールの
ような比重が水より小さい合成樹脂フイルムをた
とえば第４図の正面図および第５図の側面図に示
すような単葉形の海藻である「はぶたえのり」の
形状に成形したもの等が製造し易く好適である。
この疑似海藻８は葉部８ａ、茎部８ｂおよび根部
８ｃを備えている。葉部８ａは中心部８a1と小葉
部８a2からなり、また第５図に示すように葉の面
に多数の小突起８ｄが形成されており、葉部全体
にわたり表裏両面に凹凸面が形成されている。こ
のような凹凸面はたとえば疑似海藻８を面の粗い
鋳型で加圧成形することにより容易に形成するこ
とができる。この疑似海藻８を第６図に示すよう
に海藻付着体５に穿設した複数の小さな穴９にそ
れぞれ１本ずつ植え込んでもよいし、第７図に示
すように小数（たとえば４個）の大きな穴１０に
それぞれ複数本（たとえば４本）ずつ植え込んで
もよい。またこのような小さな穴９と大きな穴を
併存して設けてもよい。 These seaweed adherents 5 allow natural seaweed to adhere to themselves and grow, but it takes time for the seaweed to grow, and most seaweed grows in the spring and dies in the fall, so it can be used throughout the year. In order to ensure adhesion of plankton and thereby promote the guidance of migratory fish, artificial simulated seaweed 8 is attached to each seaweed adherent 5. In order to attach the pseudo seaweed 8 to the seaweed adhesion body 5 made of natural stone, a hole is drilled in the upper part of the seaweed adhesion body 5, the roots of the pseudo seaweed 8 are embedded in the hole, and mortar is poured into the hole to harden it. That's fine. As pseudo-seaweed, synthetic resin films such as polyethylene and polystyrene, which have a specific gravity smaller than that of water, can be used, for example, as ``Habutae-nori'', which is a monolobed seaweed as shown in the front view of Figure 4 and the side view of Figure 5. '' is suitable because it is easy to manufacture.
This pseudo seaweed 8 includes a leaf portion 8a, a stem portion 8b, and a root portion 8c. The leaf part 8a consists of a central part 8a1 and a leaflet part 8a2 , and as shown in FIG. 5, a large number of small protrusions 8d are formed on the leaf surface, and uneven surfaces are formed on both the front and back sides over the entire leaf part. has been done. Such an uneven surface can be easily formed by, for example, press-molding the simulated seaweed 8 using a mold with a rough surface. This pseudo seaweed 8 may be planted one by one in each of a plurality of small holes 9 made in the seaweed adhering body 5 as shown in FIG. A plurality of plants (for example, four plants) may be planted in each hole 10. Further, such small holes 9 and large holes may be provided together.
疑似海藻のモデルとなる海藻の種類としては上
記「はぶたえのり」のほか、ひとえぐさ科、しお
ぐさ科、ほそもつ小ぐさ、はねも科、いわづた
科、みる科、あみしぐさ科、うるしぐさ科、こん
ぶ科、ほんだわら科、うしけのり科、がらがら
科、りゆうもんそう科、なみのはな科、さんごも
科、むかでのり科、つかさのり科、みりん科、あ
つばのり科、はすしぐさ、すぎのり科、だいす
科、むつなぎそう科、いぎす科、このはのり科、
ふじまつも科等が挙げられる。 Types of seaweed that can be used as a model for pseudo-seaweed include the above-mentioned "Habotaenori", as well as the family Hitoaceae, the family Shiogata, the family Aminaceae, the family Hanemaceae, the family Iwazutaceae, the family Amitaceae, and the family Ami. Urinaceae, Urinaceae, Kelp family, Hondastra family, Ushikenori family, Rataraceae, Ryuumontaceae, Southern flower family, Coral family, Mukadenori family, Tsukasanori family, Mirinaceae, Atsuba Noriaceae, Hasushigusa, Suginoriaceae, Daisufamily, Mutsunagifamily, Igisidae, Konohanaidae,
Examples include the Fujimatsu family.
また各海藻付着体５相互間の間隙および各海藻
付着体５と枠体２の間隙にはその間隙に収まる程
度の大きさの石を適宜の高さに敷きつめると、よ
り優れた魚のかくれ場所や産卵場所を提供するの
で好ましい。ただしこの場合でも海水の流通路
６，７が充分な深さで確保できるように、石をこ
れらの間隙につめる高さを制限しなければならな
い。 In addition, if stones of a size that can fit in the gaps are laid at an appropriate height in the gaps between each seaweed-attached body 5 and between each seaweed-attached body 5 and the frame 2, it is possible to create a better hiding place for fish. This is desirable because it provides a breeding ground and spawning area. However, even in this case, the height at which the stones are filled in these gaps must be limited so that the seawater flow paths 6 and 7 can be secured at a sufficient depth.
枠体２、海藻付着体５および疑似海藻８の寸法
については特に制限はないが、上記実施例の場合
はたとえば枠体の幅150cm、長さ180cm、高さ60
cm、空隙の一辺の長さ30cm、海藻付着体の一辺の
長さ50cm〜60cm、疑似海藻８の高さ60cm程度にす
ると好適である。 There are no particular restrictions on the dimensions of the frame 2, the seaweed adherents 5, and the pseudo seaweed 8, but in the case of the above example, the frame has a width of 150 cm, a length of 180 cm, and a height of 60 cm.
cm, the length of one side of the void is 30 cm, the length of one side of the seaweed adherent is 50 cm to 60 cm, and the height of the pseudo seaweed 8 is preferably about 60 cm.
枠体２全体が砂に埋没するおそれがある海底に
おいては、この枠体２を２段または３段積み重ね
て設置すればこのような埋没を防止することは容
易である。この場合上段の箱体２の脚部１２およ
び把手１３の形成は省略すればよい。 On the seabed, where there is a risk that the entire frame 2 may be buried in sand, such burying can be easily prevented by stacking the frames 2 in two or three tiers. In this case, the formation of the legs 12 and handle 13 of the upper box body 2 may be omitted.
次にこの人工魚礁１の作用について補足的に説
明する。上記例示した寸法によれば、鉄製枠体２
は数百Kgの重量があり、また自然石からなる海藻
付着体５は１個当り約300Kgの重量があるので、
潮流や波浪の激しい海底でも押流されたり転倒す
ることはない。また鉄枠の空隙が大きいので、コ
ンクリートブロツク製魚礁のように側壁衝突した
海流の作用により枠体の底の海底の砂がえぐられ
る可能性は極めて小さい。 Next, the function of this artificial reef 1 will be supplementarily explained. According to the dimensions exemplified above, the iron frame 2
weighs several hundred kilograms, and each seaweed adhering body 5 made of natural stone weighs about 300 kilograms, so
It will not be swept away or overturned even on the ocean floor with strong currents and waves. Furthermore, since the steel frame has large voids, there is a very small possibility that the seabed sand at the bottom of the frame will be gouged out by the action of ocean currents that collide with the side walls, as in the case of concrete block fish reefs.
また枠体２に形成された空隙１４が海水流通路
６，７と連通しているので、第３図に示すように
空隙１４から流入した海水ａは各海水流通路６，
７に分流し他の空隙１４から流入した海水と衝突
しながら複雑なコースをたどり、しばらくの間海
水流通路６，７内に滞留した後枠体２から外部へ
出て行く。したがつて海水によつて運ばれて来た
プランクトン等の微生物や稚貝等が海藻付着体５
に生えた自然の海藻および人工の疑似海藻８に付
着する確率が著るしく高まる。さらに、疑似海藻
８に形成された凹凸面は、疑似海藻８に付着した
微生物等が潮流によつて洗い流されることを防止
し、微生物等の定着率を向上させる。 Furthermore, since the void 14 formed in the frame body 2 communicates with the seawater flow passages 6 and 7, the seawater a flowing in from the void 14 flows through each of the seawater flow passages 6 and 7, as shown in FIG.
7, the seawater follows a complicated course while colliding with seawater flowing in from another gap 14, stays in the seawater flow passages 6 and 7 for a while, and then exits from the frame body 2. Therefore, microorganisms such as plankton and young shellfish carried by seawater become seaweed adherents 5.
The probability of adhesion to natural seaweed and artificial artificial seaweed 8 that grows on the seaweed increases significantly. Furthermore, the uneven surface formed on the simulated seaweed 8 prevents microorganisms and the like attached to the simulated seaweed 8 from being washed away by the current, thereby improving the colonization rate of the microorganisms and the like.
従来鉄材の腐蝕により生成する鉄錆に対し海藻
や貝類が良く付着することはその理由は明らかで
はないが経験上良く知られていることであり、こ
の現象を利用した鋼製人工魚礁も使用されている
が、従来の鋼製魚礁は比較的軽量のため潮流に押
流されて散逸するおそれがあるとともに腐蝕が進
むとばらけて魚礁としての機能を失う欠点があつ
た。本考案においては鉄製枠体の中に複数のブロ
ツク状海藻付着体を配設したのて、これら海藻付
着体がいわば重錘として鉄枠を海底に押え付ける
作用をするので潮流に押流されることがなく、ま
た腐蝕が進んで鉄枠が最後にはばらばらになつた
としても、なお海藻付着体は魚礁としての機能を
果し続けるので、長期間にわたつて人工魚礁の機
能を保持することができる。 Although the reason for this is not clear, it is well known from experience that seaweed and shellfish often adhere to iron rust that is generated by corrosion of conventional iron materials, and artificial reefs made of steel that take advantage of this phenomenon are also used. However, because conventional steel fish reefs are relatively lightweight, there is a risk that they will be washed away by currents and dissipate, and as corrosion progresses, they will come apart and lose their function as fish reefs. In this invention, a plurality of block-shaped seaweed adherents are arranged inside the iron frame, and these seaweed adherents act as a weight to hold the iron frame against the seabed, so that they are not washed away by the current. Even if there is no corrosion and the steel frame eventually falls apart due to corrosion, the seaweed deposits will continue to function as a fish reef, so it is possible to maintain the function of an artificial reef for a long time. can.
上記実施例においては海藻付着体５として自然
石を用いているが、これに代り中空または中実の
立方体または直方体状等のコンクリート製のブロ
ツクを使用することも不可能ではない。しかしコ
ンクリート製ブロツクはアルカリ分が溶出する上
に、側壁部に凹凸面がないので、凹凸面を有する
自然石を用いる上記実施例に比較して海藻や稚貝
等の付着効果において劣ることは否めない。また
鉄製枠体２の形状は図示のものに限らず６角形そ
の他任意の形状を採用することができる。また枠
体２の材料は上記のようにアングル材と鉄棒の組
合せに限らず他の型の鉄材を用いてもよいことは
勿論である。また枠体２の組立ては溶接に限らず
ボルトナツトによる締結等他の固着手段を用いて
もよい。
In the above embodiment, natural stone is used as the seaweed adhesion body 5, but it is not impossible to use a hollow or solid cubic or rectangular concrete block instead. However, since concrete blocks elute alkaline content and do not have uneven surfaces on the side walls, it is undeniable that they are inferior in terms of adhering effects for seaweed and young shellfish compared to the above example using natural stone with uneven surfaces. do not have. Further, the shape of the iron frame body 2 is not limited to that shown in the drawings, but may be hexagonal or any other arbitrary shape. Further, the material of the frame body 2 is not limited to the above-mentioned combination of angle materials and iron bars, but it goes without saying that other types of iron materials may be used. Further, the assembly of the frame body 2 is not limited to welding, and other fixing means such as fastening with bolts and nuts may be used.
以上述べたように、本考案によれば、複数の海
藻付着体がブロツク状枠体の中に配置されている
ので、これらの海藻付着体が潮流、波浪によつて
転倒したり埋没したりあるいは相互にぶつかつて
破損したりするおそれがなく、長年月にわたつて
魚礁としての機能を維持することができる。また
鉄製の枠体はその腐蝕によつて生じる鉄錆のため
に海藻類や貝類の付着を促進する。また枠体の空
隙から入つて海藻付着体相互間の海水流通路を流
れる海水の枠体内の滞留時間が長いので微生物等
の海藻および疑似海藻への付着率が高まり、回遊
魚にとつて良好な餌場が形成される上に、各海藻
付着体間の海水流通路は魚にとつて適当なかくれ
場所を提供するので、全体として優れた魚礁が形
成される。特に海水の流通路は枠体の床面から海
藻付着体の頂部に達する深さを有するものであ
り、これら海水流通路が相互に連通しているの
で、各海藻付着体の周囲に外部からの海水が充分
に流通し、したがつて微生物や海藻等が各海藻付
着体の全面にわたつて均一に付着しもつとも効率
がよい餌場が提供される。また海水の流通路を形
成する海藻付着体の間の間隙にはその間隙に収ま
る大きさの石を適当な高さに敷きつめてあるの
で、一層優れた魚のかくれ場所や産卵場所が提供
される上に、ウニ、アワビ等に限らず比較的に大
きなスペースを必要とする各種の食用魚のかくれ
場所等として好適な環境が形成され、これら各種
の食用魚を誘致することができる。
As described above, according to the present invention, since a plurality of seaweed-attached bodies are arranged in a block-shaped frame, these seaweed-attached bodies are prevented from being overturned or buried by tides or waves. There is no risk of them colliding with each other and damaging them, and they can maintain their function as a fish reef for many years. In addition, the steel frame promotes the adhesion of seaweed and shellfish due to iron rust caused by corrosion. In addition, since seawater enters through the gaps in the frame and flows through the seawater flow paths between the seaweed adherents, the residence time inside the frame is long, increasing the rate of attachment of microorganisms to seaweed and pseudo-seaweed, which is good for migratory fish. In addition to forming feeding grounds, the seawater flow passages between the seaweed deposits provide suitable hiding places for fish, resulting in the formation of an excellent fish reef as a whole. In particular, the seawater flow passages have a depth that reaches from the floor of the frame to the top of the seaweed deposits, and since these seawater flow passages communicate with each other, there is no external interference around each seaweed deposit. Seawater circulates sufficiently, and therefore microorganisms, seaweed, etc. adhere uniformly over the entire surface of each seaweed-attached body, providing a highly efficient feeding ground. In addition, the gaps between the seaweed deposits that form the seawater flow channels are filled with stones that are sized to fit in the gaps at an appropriate height, providing even better hiding places and spawning spots for fish. In addition, a suitable environment is created as a hiding place for not only sea urchins, abalone, etc., but also various edible fish that require a relatively large space, and these various edible fish can be attracted.
第１図は本考案にかかる人工魚礁の斜視図、第
２図はその正面図、第３図はその平面図、第４図
は疑似海藻の１例を示す正面図、第５図はその側
面図、第６図および第７図はそれぞれ疑似海藻を
海藻付着体に取付ける態様を示す図、第８図は枠
体の脚部１２を第２図中Ａ方向に見た部分拡大図
である。
１……人工魚礁、２……枠体、５……海藻付着
体、６……海水流通路、８……疑似海藻。
Figure 1 is a perspective view of the artificial reef according to the present invention, Figure 2 is its front view, Figure 3 is its top view, Figure 4 is its front view showing an example of simulated seaweed, and Figure 5 is its side view. 6 and 7 are views showing the manner in which the simulated seaweed is attached to the seaweed adhering body, respectively, and FIG. 8 is a partially enlarged view of the leg portion 12 of the frame body viewed in the direction A in FIG. 2. 1...Artificial fish reef, 2...Frame body, 5...Seaweed adhering body, 6...Seawater flow passage, 8...Pseudo seaweed.
Claims (1)
の空〓を有するカゴ状の鉄製枠体中に、ブロツク
状の海藻付着体を上下方向に相互に重ならないよ
うにして複数個配設し、該複数個の海藻付着体相
互間の間〓および該海藻付着体と枠体の間の間〓
には枠体の床面から海藻付着体の頂部に達する海
水の流通路を形成するとともに各流通路が相互に
連通するようにし、該各間〓にはその間〓に収ま
る大きさの石を適当の高さに敷きつめ、かつ該海
藻付着体間の頂部には人工の疑似海藻を取付けた
ことを特徴とする疑似海藻付き人工漁礁。 A plurality of block-shaped seaweed adhesion bodies are disposed in a cage-shaped iron frame having an open top surface and a large number of holes at the sides and bottom so as not to overlap each other in the vertical direction, and Between each seaweed adherent and between the seaweed adherent and the frame
A passage for seawater to reach from the floor of the frame to the top of the seaweed adhering body is formed, and each passage is communicated with each other, and a stone of a size that fits between them is placed between each passage. 1. An artificial fishing reef with artificial seaweed, characterized in that the artificial seaweed is spread over the seaweed at a height of 1, and artificial seaweed is attached to the top between the seaweed adherents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986174664U JPH0339028Y2 (en) | 1986-11-13 | 1986-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986174664U JPH0339028Y2 (en) | 1986-11-13 | 1986-11-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6380965U JPS6380965U (en) | 1988-05-27 |
| JPH0339028Y2 true JPH0339028Y2 (en) | 1991-08-16 |
Family
ID=31113262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986174664U Expired JPH0339028Y2 (en) | 1986-11-13 | 1986-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339028Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932271U (en) * | 1982-08-24 | 1984-02-28 | 三洋電機株式会社 | control box waterproofing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59105853U (en) * | 1982-12-28 | 1984-07-17 | 株式会社安孫子建設 | fish reef |
-
1986
- 1986-11-13 JP JP1986174664U patent/JPH0339028Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932271U (en) * | 1982-08-24 | 1984-02-28 | 三洋電機株式会社 | control box waterproofing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6380965U (en) | 1988-05-27 |
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