JP2774994B2 - Artificial fish nest - Google Patents
Artificial fish nestInfo
- Publication number
- JP2774994B2 JP2774994B2 JP1262690A JP26269089A JP2774994B2 JP 2774994 B2 JP2774994 B2 JP 2774994B2 JP 1262690 A JP1262690 A JP 1262690A JP 26269089 A JP26269089 A JP 26269089A JP 2774994 B2 JP2774994 B2 JP 2774994B2
- Authority
- JP
- Japan
- Prior art keywords
- artificial fish
- fish nest
- rock
- rocks
- riverbed
- 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 - Fee Related
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
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、岩石を利用した人工魚巣に関する。Description: TECHNICAL FIELD The present invention relates to an artificial fish nest using rocks.
従来の河川における人工魚巣は、主としてコンクリー
ト製品によってなり、これによって岸壁を構築し、更に
は適当に間隙あるいは空洞を設けて魚巣とすることが行
われていた。Conventionally, artificial fish nests in rivers are mainly made of concrete products, which are used to construct a quay and to provide a proper gap or cavity to form a fish nest.
また、海洋の人工魚礁として知られる人工魚巣は、内
部に多数の空洞を設けたコンクリート製品を海中に投入
することによって行われていた。In addition, artificial fish nests known as marine artificial fish reefs have been performed by putting concrete products having a large number of cavities therein into the sea.
ところが、製造したばかりのコンクリート製品は、コ
ンクリートの表面からセメント成分が溶出し、これによ
って河川、海洋を汚染し、河川においてはホタル、貝等
が住まなくなり、海においては多数の人工魚礁を投入す
ることで海洋全体を汚染するという問題点があった。However, in the freshly manufactured concrete products, the cement component elutes from the surface of the concrete, thereby polluting the river and the ocean. As a result, there was a problem that the entire ocean was polluted.
本発明はこのような事情に鑑みてなされたもので、河
川、海洋汚染を防止する人工魚巣を提供することを目的
とする。The present invention has been made in view of such circumstances, and has as its object to provide an artificial fish nest for preventing pollution of rivers and oceans.
〔問題点を解決するための手段〕 上記目的に沿う請求の範囲第１項記載の人工魚巣は、
川底に固定する人工魚巣であって、複数の岩石に孔を穿
って内部に紐、棒あるいは鎖状物を通し、その先端部を
川底に固定したアンカーに連結して構成されている。[Means for Solving the Problems] The artificial fish nest according to claim 1 which meets the above object,
An artificial fish nest fixed to a riverbed, which is formed by drilling holes in a plurality of rocks, passing a string, a rod, or a chain-like material therein, and connecting a tip end thereof to an anchor fixed to the riverbed.
また、請求の範囲第２項記載の人工魚巣は、請求の範
囲第１項記載の人工魚巣において、岩石には貫通する孔
が形成されて構成されている。An artificial fish nest according to claim 2 is the artificial fish nest according to claim 1, wherein the rock has a through hole formed therein.
そして、請求の範囲第３項記載の人工魚巣は、適当個
数の孔を穿った岩石を複数個海底に沈めて構成されてい
る。The artificial fish nest according to claim 3 is formed by submerging a plurality of rocks having an appropriate number of holes on the seabed.
請求の範囲第１項及び第２項記載の人工魚巣は、複数
の岩石に孔を穿ち、内部に紐（ロープ）、棒あるいは鎖
状物を通し、その先端部を川底に固定しているので、岩
石が長期にわたって川底に固定されることになり、これ
によって人工魚巣を形成することが可能となる。The artificial fish nest according to claims 1 and 2 has holes in a plurality of rocks, a string (rope), a rod or a chain-like material is passed inside, and the tip is fixed to the riverbed. As a result, the rocks are fixed to the riverbed for a long time, which makes it possible to form artificial fish nests.
また、岩石を川底に配置しているので、コンクリート
のように溶出物がなく、河川を汚染することもない。In addition, since rocks are placed on the riverbed, there is no eluate like concrete, and there is no pollution of the river.
請求の範囲第３項記載の人工魚巣においては、適当個
数の孔を岩石に設けて、複数個海底に沈めているので岩
石の間だけでなく、岩石の孔の部分にも魚が住むことが
できる。更には、岩石であるので、セメント分の溶出が
なく海洋を汚染することがない。In the artificial fish nest according to claim 3, a suitable number of holes are provided in the rock, and a plurality of the holes are submerged on the seabed, so that the fish live not only between the rocks but also in the hole of the rock. Can be. Furthermore, since it is a rock, there is no elution of cement content and there is no pollution of the ocean.
続いて、添付した図面を参照しつつ、本発明を具体化
した実施例につき説明し、本発明の理解に供する。Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
ここに、第１図は本発明の一実施例に係る人工魚巣の
概略側面図、第２図は本発明の第２の実施例に係る人工
魚巣の概略側面図、第３図は上記第２の実施例に使用す
る岩石の断面図、第４図は本発明の第３の実施例に係る
人工魚巣の概略側面図である。Here, FIG. 1 is a schematic side view of an artificial fish nest according to one embodiment of the present invention, FIG. 2 is a schematic side view of an artificial fish nest according to a second embodiment of the present invention, and FIG. FIG. 4 is a sectional view of a rock used in the second embodiment, and FIG. 4 is a schematic side view of an artificial fish nest according to a third embodiment of the present invention.
第１図に示すように、本発明の第１の実施例に係る人
工魚巣10は、川底11を掘削して岩石からなる基礎体12を
設け、該基礎体12にアンカー13を埋設している。そし
て、予め孔が穿設された岩石14を用意し、該岩石14の孔
15に鉄またはステンレス製の鎖16を通し、該鎖16の始端
部を上記アンカー13に連結している。そして、該鎖16の
終端部には該孔15の直径より径の大きい抜け止めストッ
パー17を装着し、岩石14からの抜け止めを図っている。As shown in FIG. 1, an artificial fish nest 10 according to a first embodiment of the present invention is provided by excavating a riverbed 11 to provide a base body 12 made of rock, and burying an anchor 13 in the base body 12. I have. Then, a rock 14 in which a hole has been drilled is prepared, and the hole of the rock 14 is prepared.
A chain 16 made of iron or stainless steel is passed through 15, and the starting end of the chain 16 is connected to the anchor 13. A stopper 17 having a diameter larger than the diameter of the hole 15 is attached to the end of the chain 16 to prevent the chain 16 from falling off the rock 14.
なお、この抜け止めストッパー17を上記岩石14を連結
する鎖16の中間部に配置することも可能であり、これに
よって個々の岩石14を固定することができる。It is also possible to dispose the stopper 17 in the middle of the chain 16 connecting the rocks 14, so that the individual rocks 14 can be fixed.
なお、ここで、上記基礎体12に長時間雨水にさらされ
ても、セメントからのアルカリ分あるいはその他の有害
物がでないコンクリートを使用することも理論上は可能
である。It should be noted that it is theoretically possible to use concrete that does not contain alkali components or other harmful substances from cement even if the base body 12 is exposed to rainwater for a long time.
また、ここで岩石とは花崗岩、玄武岩あるいは安山岩
等の自然石で風化されにくい岩石を使用するのが好まし
く、その大きさは小さくても100kg程度以上、通常は１
〜10t程度であるのが好ましいが、岩石はその場の状況
によって異なるので、本発明は岩石の種類あるいは大き
さによって限定されるものではない。Here, the rock is preferably natural rock such as granite, basalt or andesite, which is hardly weathered, and its size is about 100 kg or more at least, usually about 1 kg.
Although it is preferably about 10 tons, the present invention is not limited by the type or size of the rock because the rock varies depending on the situation at the place.
そして、上記基礎体12の周囲には適当に砂利、栗石等
を入れて全体を補強する。Then, gravel, chestnut stone and the like are appropriately put around the base body 12 to reinforce the whole.
第２図には本発明の第２の実施例に係る人工魚巣18を
示すが、図に示すように基礎体19が大きな岩石あるいは
岩盤によって構成され、各岩石14の内部には第３図に示
すように、棒の一例である鉄筋（他のステンレス等の金
属棒であっても良い）20が配置され、鉄筋20の両端はリ
ング21,22が形成され、別のリングを用いて隣合う岩石1
4に嵌入した鉄筋を連結するようになっている。なお、
上記リング21、22の何れか一方と鉄筋20との連結はネジ
構造であっても良いし、あるいは現場で溶接しても良
い。そして、始端部の鉄筋20とアンカー13との連結はチ
ェーン（あるいは鉄筋）16aによって行う。FIG. 2 shows an artificial fish nest 18 according to a second embodiment of the present invention. As shown in FIG. 2, the base body 19 is formed of a large rock or a bedrock. As shown in the figure, a reinforcing bar (which may be another metal bar such as stainless steel) 20 as an example of a bar is disposed, and rings 21 and 22 are formed at both ends of the reinforcing bar 20. Matching rock 1
The rebar inserted in 4 is connected. In addition,
The connection between one of the rings 21 and 22 and the reinforcing bar 20 may be a screw structure or may be welded on site. The connection between the reinforcing bar 20 at the start end and the anchor 13 is performed by a chain (or reinforcing bar) 16a.
このように、各岩石14を鎖16a及び鉄筋20で川底に固
定することによって、岩石14の流れを防止し、川底に人
工魚巣を作ることができる。上記鎖、鉄筋あるいは鎖の
代わりに腐食しない紐（例えば合成樹脂素材のロープ）
であっても良い。Thus, by fixing each rock 14 to the riverbed with the chain 16a and the reinforcing bar 20, the flow of the rock 14 can be prevented, and an artificial fish nest can be formed on the riverbed. Strings that do not corrode in place of the above chains, rebars or chains (eg ropes made of synthetic resin)
It may be.
なお、第３図に示すように、岩石14に適当に貫通孔23
（もっと大きくても良い）が形成されているので、これ
を魚の住処とすることもできる。In addition, as shown in FIG.
(It can be bigger) so it can be used as a fish habitat.
第４図には、本発明の第３の実施例に係る人工魚巣25
を示すが、貫通孔（あるいは貫通しない穴）26が形成さ
れた多数の岩石27を海面より同一箇所に投下することに
よって、人工魚巣を形成している。FIG. 4 shows an artificial fish nest 25 according to a third embodiment of the present invention.
An artificial fish nest is formed by dropping a large number of rocks 27 having through holes (or holes that do not penetrate) 26 at the same place from the sea surface.
ここで、上記岩石14、27としては、例えば、安山岩、
玄武岩、花崗岩等を使用したが例えば、成形後相当期間
経過してセメントからのアルカリ分あるいはその他の有
害物が溶出し尽くしたコンクリートの塊を使用すること
も可能である。なお、予めコンクリート自体に孔あるい
は間隙を形成してこれを適当に放置し、セメントからの
公害源を略完全に溶出させた後、使用することも可能で
ある。Here, as the rocks 14 and 27, for example, andesite,
Although basalt, granite, and the like are used, for example, it is also possible to use a concrete mass in which alkali or other harmful substances from cement have been eluted out after a considerable period of time after molding. In addition, it is also possible to form a hole or a gap in the concrete itself in advance, leave it appropriately, and elute the pollution source from the cement almost completely before use.
請求の範囲第１項、第２項記載の人工魚巣は以上の説
明からも明らかなように、複数の岩石が川底に固定され
ているので、これを人工魚巣とすることができる。ま
た、個々の岩石は紐、棒、鎖等によって川底に固定した
アンカーに連結されているので、河川が増水しても水に
よって流されることが無く、長期の人工魚巣とすること
ができる。As is clear from the above description, the artificial fish nest according to claims 1 and 2 can be used as an artificial fish nest because a plurality of rocks are fixed to the riverbed. In addition, since each rock is connected to an anchor fixed to the river bottom by a string, a rod, a chain, or the like, even if the river rises, it is not washed away by water, and a long-term artificial fish nest can be obtained.
そして、岩石を使用するので、従来の如くコンクリー
ト製品を使用した場合と異なり、公害源となることが少
なくなった。And since rock is used, unlike a conventional case using a concrete product, it is less likely to be a pollution source.
請求の範囲第３項記載の人工魚巣は、人工魚礁となる
人工魚巣の材料に岩石を使用しているので、従来のセメ
ント製品からなる人工魚礁と異なり、海中投入後に海を
汚染することがない。Since the artificial fish nest according to claim 3 uses rock as a material for the artificial fish nest to be an artificial fish reef, unlike an artificial fish reef made of a conventional cement product, it contaminates the sea after being put into the sea. There is no.
第１図は本発明の一実施例に係る人工魚巣の概略側面
図、第２図は本発明の第２の実施例に係る人工魚巣の概
略側面図、第３図は上記第２の実施例に使用する岩石の
断面図、第４図は本発明の第３の実施例に係る人工魚巣
の概略側面図である。 〔符号の説明〕 10……人工魚巣、11……川底、12……基礎体、13……ア
ンカー、14……岩石、15……孔、16……鎖、17……スト
ッパー、18……人工魚巣、19……基礎体、20……鉄筋、
21、22……リング、23……貫通孔、25……人工魚巣、26
……貫通孔、27……岩石FIG. 1 is a schematic side view of an artificial fish nest according to one embodiment of the present invention, FIG. 2 is a schematic side view of an artificial fish nest according to a second embodiment of the present invention, and FIG. FIG. 4 is a schematic side view of an artificial fish nest according to a third embodiment of the present invention. [Description of Signs] 10 …… Artificial fish nest, 11 …… River bottom, 12 …… Basic body, 13 …… Anchor, 14 …… Rock, 15 …… Hole, 16 …… Chain, 17 …… Stopper, 18… … Artificial fish nest, 19 …… foundation body, 20 …… rebar,
21, 22 ... ring, 23 ... through hole, 25 ... artificial nest, 26
…… through hole, 27 …… rock
Claims (3)
岩石に孔を穿って内部に紐、棒あるいは鎖状物を通し、
その先端部を川底に固定したアンカーに連結したことを
特徴とする人工魚巣。1. An artificial fish nest to be fixed to a riverbed, wherein a plurality of rocks are pierced and a string, a rod or a chain is passed through the inside,
An artificial fish nest whose tip is connected to an anchor fixed to the riverbed.
の範囲第１項記載の人工魚巣。2. An artificial fish nest according to claim 1, wherein a penetrating hole is formed in the rock.
沈めたことを特徴とする人工魚巣。3. An artificial fish nest characterized by submerging a plurality of rocks having an appropriate number of holes on the seabed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1262690A JP2774994B2 (en) | 1989-10-07 | 1989-10-07 | Artificial fish nest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1262690A JP2774994B2 (en) | 1989-10-07 | 1989-10-07 | Artificial fish nest |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03123429A JPH03123429A (en) | 1991-05-27 |
| JP2774994B2 true JP2774994B2 (en) | 1998-07-09 |
Family
ID=17379245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1262690A Expired - Fee Related JP2774994B2 (en) | 1989-10-07 | 1989-10-07 | Artificial fish nest |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2774994B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06141729A (en) * | 1992-11-09 | 1994-05-24 | Miyata Kankyo Sekizai:Kk | Fishing bank block using natural stone |
| JP2006067971A (en) * | 2004-09-06 | 2006-03-16 | Murakami Sekizai Kogyo:Kk | Fish reef-forming unit and method for forming fish reef |
| JP4853709B2 (en) * | 2006-11-14 | 2012-01-11 | 株式会社自然環境 | Artificial fish reef, sinking, fishway, and seawall member using waterside installation members |
| US8869746B2 (en) * | 2009-08-06 | 2014-10-28 | Stewart Hardison | Mooring structure with habitat features for marine animals |
-
1989
- 1989-10-07 JP JP1262690A patent/JP2774994B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03123429A (en) | 1991-05-27 |
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