JP2521625B2 - Artificial fish reef for soft ground - Google Patents
Artificial fish reef for soft groundInfo
- Publication number
- JP2521625B2 JP2521625B2 JP4360907A JP36090792A JP2521625B2 JP 2521625 B2 JP2521625 B2 JP 2521625B2 JP 4360907 A JP4360907 A JP 4360907A JP 36090792 A JP36090792 A JP 36090792A JP 2521625 B2 JP2521625 B2 JP 2521625B2
- Authority
- JP
- Japan
- Prior art keywords
- soft ground
- fish reef
- artificial fish
- board
- reef
- 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 - Lifetime
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
【０００１】[0001]
【産業上の利用分野】本発明は、海底が軟弱地盤・ヘド
ロとなっている海底に設置される人工魚礁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial fish reef installed on the seabed where the seabed is soft ground and sludge.
【０００２】[0002]
【従来の技術】従来の人工魚礁は、コンクリート・鋼材
の素材を使ったものが一般的であるが、軟弱地盤の海底
でこれらの人工魚礁を使用すると、魚礁素材の比重が大
きく且つ軟弱地盤の支持力があまりないため、人工魚礁
が軟弱地盤内に深く沈下して魚礁としての機能を失って
しまうという問題点があった。又、鋼製・コンクリート
製の部材・壁のみでは魚礁としての集魚・魚巣機能が充
分でなかった。2. Description of the Related Art Conventional artificial fish reefs are generally made of concrete and steel materials, but when these artificial fish reefs are used on the seabed of soft ground, the specific gravity of the fish reef material is large and Since there is not enough bearing capacity, there is a problem that the artificial reef sinks deep into the soft ground and loses its function as a reef. In addition, the steel / concrete members / walls were not sufficient for collecting fish and functioning as a fish reef.
【０００３】又、この種の軟弱地盤用人工魚礁として、
底面に鋼板・網体を翼状に張り出す構造のものが実開昭
６３−１７３０５９号公報で知られている。しかしなが
ら、この構造のものでも、人工魚礁の重みによって下方
の軟弱地盤の土が外周へ逃げてしまい、人工魚礁はやは
り深く沈下しがちである。不等沈下、人工魚礁の傾き、
海水の流体力に対して軟弱地盤からの充分な反力・回復
モーメントが生起せず、人工魚礁は滑り・転倒しがちと
なる。これとは別に、長い杭脚を人工魚礁に設けて支持
する構造のものが特開昭５５−１３８３４１，６１−２
４２５２８号公報に開示されているが、軟弱地盤層が厚
い場合は、きわめて長い杭脚を必要として魚礁の製造・
設置が難しくなる。杭脚が短くて硬い支持地盤まで達し
なければ杭脚は殆んど人工魚礁の安定設置に寄与しない
という問題点があった。更に、特開昭５６−１２１４２
０号公報，実開平４−１１０４６６号公報には、下部外
周に環状縦壁部を有する基礎周枠を設けた魚礁ブロック
構造、及び下部に垂直の内枠を環状に設けた構造が開示
されている。しかしながら両公報の基礎周枠、内枠とも
それで囲まれる内側の広い空間には天板がなく開放され
ている。そのため、魚礁の沈降に対する抵抗が小さく沈
下を防ぐには支持力が不足する。又、基礎周枠、内枠内
の土砂が海流によって上方に吹き上げられ、軟弱地盤に
よる支持が不安定となり、転倒（不等沈下），水平移動
し易いという問題点がある。 Further, as an artificial fish reef of this kind for soft ground,
A structure in which a steel plate / mesh body is projected like a wing on the bottom surface is known from Japanese Utility Model Laid-Open No. 63-173059. However, even with this structure, the soil of the soft ground below escapes to the outer periphery due to the weight of the artificial fish reef, and the artificial fish reef still tends to sink deeply. Unequal settlement, inclination of artificial reef,
The reaction force and recovery moment from the soft ground against the hydrodynamic force of seawater do not occur, and the artificial reef tends to slip and fall. Aside from this, a structure in which long pile legs are provided and supported on an artificial reef is disclosed in JP-A-55-138341, 61-2.
As disclosed in Japanese Patent No. 42528, when the soft ground layer is thick, extremely long pile legs are required to produce fish reef.
Installation becomes difficult. There is a problem that the pile legs hardly contribute to the stable installation of the artificial fish reef unless the pile legs reach short and hard supporting ground. Further, JP-A-56-12142
No. 0 gazette and Jitsukaihei 4-110466 gazette show the outside of the lower part.
A fish reef block provided with a foundation frame having an annular vertical wall on the periphery
Disclosed is a structure and a structure in which a vertical inner frame is provided in an annular shape at the bottom.
Have been. However, both the basic peripheral frame and the inner frame of both publications
There is no top plate in the large inner space surrounded by it and it is opened
ing. Therefore, there is little resistance to the sedimentation of fish reefs.
Insufficient support to prevent lowering. Also, in the basic peripheral frame and inner frame
Of sand and sand are blown upward by the ocean current, creating soft ground.
Support becomes unstable, and falls (unequal settlement), horizontal movement
There is a problem that it is easy to do.
【０００４】[0004]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、従来のこれらの問題点を解消し、魚礁の軟
弱地盤内への沈下が抑えられ魚礁部分が海底面上に維持
でき、且つ集魚・魚巣機能に優れた軟弱地盤用人工魚礁
を提供することにある。The problem to be solved by the present invention is to solve these problems in the prior art, to prevent the settlement of fish reefs into the soft ground, and to keep the fish reefs on the sea floor. Moreover, it is to provide an artificial fish reef for soft ground, which has an excellent function of collecting and nesting fish.
【０００５】[0005]
【課題を解決するための手段】かかる課題を解決した本
発明の要旨は、 １）水平な基板の外周に外柵を立設し、基板上方に滑ら
かに湾曲した外枠部材をドーム状に張り渡し、又基板の
外周下縁に所要の深さの脚板を垂設することによって、
水平な基板を天板とし脚板を側板とする下面を開放した
箱体を形成し、更に基板上に大きな岩塊を多数載置した
ことを特徴とする軟弱地盤用人工魚礁 ２） 外柵及び外枠部材が鋼製で、しかも中空パイプで
ある１）記載の軟弱地盤用人工魚礁 ３） 基板上方に消波板を複数個所設けた１）又は２）
記載の軟弱地盤用人工魚礁にある。Means for Solving the Problems The gist of the present invention which has solved the above problems is as follows: 1) An outer fence is erected on the outer periphery of a horizontal substrate, and a smoothly curved outer frame member is stretched in a dome shape above the substrate. By laying down a leg plate of the required depth on the lower edge of the outer periphery of the board ,
Opened the bottom surface with the horizontal board as the top board and the leg boards as the side boards.
Artificial fish reef for soft ground characterized by forming a box and placing a large number of large rock blocks on the substrate 2) The outer fence and outer frame members are made of steel and are hollow pipes as described in 1) Artificial fish reef for soft ground 3) Multiple wave-dissipating plates are provided above the substrate 1) or 2)
It is in the artificial fish reef for soft ground described.
【０００６】[0006]
【作用】本発明では、基板とその外周下端に垂設した脚
板とによって、下方を開口した箱体を形成し、本発明の
人工魚礁が軟弱地盤上に設置されたときに、箱形空間内
に軟弱地盤が捕捉され、軟弱地盤による支持力を高め、
又洗堀に対して軟弱地盤の流出・移動を抑えて安定して
支持する。又脚板に作用する軟弱地盤の土圧が人工魚礁
の転倒・横移動に対して抵抗力として作用する。次に、
基板の上に載置される岩塊は人工魚礁の重量を増加さ
せ、海流による水の水平力による人工魚礁の転倒・移動
を防いでいる。このように、基板と脚板の形成する箱形
空間による軟弱地盤の捕捉と、脚板による土圧の抵抗力
と、岩塊による重量の増大による作用によって、人工魚
礁は軟弱地盤に脚板部分のみを埋設され、基板から上方
部分を海底面上になるように安定して設置される。基板
上の岩塊は自然の魚巣を作り出し、人工魚礁としての魚
巣機能・集魚機能を高める。又、外枠部材をドーム状と
することで網等の引っ掛かりを少なくできる。In the present invention, a box body having an opening at the bottom is formed by the substrate and the leg plate hung on the lower end of the outer periphery thereof, and when the artificial fish reef of the present invention is installed on the soft ground, the box-shaped space The soft ground is captured in the
In addition, it suppresses the outflow and movement of soft ground against the scour and supports it stably. In addition, the soil pressure of the soft ground that acts on the leg plate acts as a resistance against the fall and lateral movement of the artificial fish reef. next,
The rock mass placed on the substrate increases the weight of the artificial fish reef and prevents the artificial fish reef from falling or moving due to the horizontal force of the water due to the ocean current. In this way, the artificial fish reef has only the foot plate part buried in the soft ground due to the trapping of the soft ground by the box-shaped space formed by the base plate and the foot plate, the resistance of the foot plate to the earth pressure, and the effect of the increase in the weight of the rock mass. Then, the upper part from the substrate is stably installed on the sea floor. The rock mass on the substrate creates a natural fish nest, and enhances the fish nest function and fish collecting function as an artificial fish reef. Further, by making the outer frame member dome-shaped, it is possible to reduce catching of a net or the like.
【０００７】ここで、人工魚礁を構成する外柵と外枠部
材を鋼製の中空パイプとすると、これによって浮力が大
きくなり、人工魚礁の重量による沈下を抑えて、沈下力
を適切なものにできる。又、外柵・外枠部材が鋼製とす
ると海藻・貝等の定着性がよくなる。Here, if the outer fence and outer frame member forming the artificial fish reef are made of steel hollow pipes, the buoyancy increases due to this, and the sinking due to the weight of the artificial fish reef is suppressed and the sinking force is made appropriate. it can. Further, if the outer fence / outer frame member is made of steel, the fixability of seaweed, shellfish, etc. is improved.
【０００８】[0008]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。本実施例は外柵と外枠部材として鋼製角パイプを
使用し、又消波板を基板上方に取付けた軟弱地盤用人工
魚礁の例である。図１は実施例の斜視図、図２は実施例
の正面図、図３は実施例の平面図、図４は実施例の側面
図、図５は図２のＡ−Ａ線における断面図、図６は図３
のＢ−Ｂ線における断面図、図７は図２のＣ−Ｃ線にお
ける断面図である。図中、１は鋼製の５ｍ×５ｍ程の基
板、２は基板１の外柵、３，４，５，６は外柵２を構成
する角パイプの水平柵材、７は外柵２の角パイプの垂直
柵材、８，９は水平柵材３，４を連結するフランジ、１
０はドーム状に湾曲した角パイプの外枠部材、１１は同
外枠部材の上端を支持する基板１の中央に立設された角
パイプの支柱、１２は同支柱の上部に取付けた消波板、
１３は基板１の外周下縁全周に垂設した６０ｃｍ深さの
脚板で、基板１を天板とする下方を開口した箱体を形成
している。１４は基板１上に載置された岩塊、１５は軟
弱地盤、１６は海面である。Embodiments of the present invention will be described below with reference to the drawings. This embodiment is an example of an artificial fish reef for soft ground in which a steel square pipe is used as an outer fence and an outer frame member, and a wave-dissipating plate is attached above the substrate. 1 is a perspective view of the embodiment, FIG. 2 is a front view of the embodiment, FIG. 3 is a plan view of the embodiment, FIG. 4 is a side view of the embodiment, and FIG. 5 is a sectional view taken along line AA of FIG. 6 is shown in FIG.
2 is a sectional view taken along line BB, and FIG. 7 is a sectional view taken along line CC of FIG. In the figure, 1 is a steel substrate of about 5 m × 5 m, 2 is an outer fence of the substrate 1, 3, 4, 5 and 6 are horizontal fence members of the square pipes that constitute the outer fence 2, and 7 is an outer fence 2. Vertical fences for square pipes, 8 and 9 are flanges for connecting horizontal fences 3 and 4, 1
Reference numeral 0 is an outer frame member of a square pipe curved in a dome shape, 11 is a square pipe column standing upright in the center of the substrate 1 that supports the upper end of the outer frame member, and 12 is a wave canceller attached to the upper portion of the column. Board,
Reference numeral 13 denotes a leg plate having a depth of 60 cm, which is vertically provided on the entire outer peripheral lower edge of the substrate 1 to form a box body having the substrate 1 as a top plate and having an open lower portion. Reference numeral 14 is a rock mass placed on the substrate 1, 15 is a soft ground, and 16 is a sea surface.
【０００９】この実施例の人工魚礁の岩塊１４を除いた
構造体の空気中重量は６トンで、岩塊１４の空気中の重
量は３１トンで、合計重量は３７トン程となっている。
又、外柵２及び外枠部材１０の中空部の浮力が１．９ト
ン程発生している。この人工魚礁を海面下深さ６ｍ程の
軟弱地盤１５に下降させると、人工魚礁の下部の脚板１
３の大部分は軟弱地盤１５内に埋設してしまう。基板１
と脚板１３とが形成する箱形空間内には軟弱地盤の一部
が捕捉され、人工魚礁を支持できる支持力を軟弱地盤１
５に生起させる。本実施例の脚板１３には軟弱地盤１５
から土圧を受けるので、人工魚礁に海水の水流による水
平力が作用して人工魚礁を水平に移動したり、又転倒
（不等沈下）しようとするのを軟弱地盤側からの土圧の
抵抗として阻止し、安定して軟弱地盤１５上に設置でき
るものとした。特に、岩塊１４を基板１上に載せたこと
で、人工魚礁の全体質量を大きくして、水・波浪による
力の影響を少なく、より安定的に設置できるものとし
た。The structure excluding the rock mass 14 of the artificial fish reef of this embodiment has a weight of 6 tons in the air, and the rock mass 14 has a weight of 31 tons in the air, and the total weight is about 37 tons. .
In addition, the buoyancy of the hollow portions of the outer fence 2 and the outer frame member 10 is about 1.9 tons. When this artificial reef is lowered to the soft ground 15 having a depth of about 6 m below the sea level, the leg plate 1 below the artificial reef 1
Most of 3 is buried in the soft ground 15. Board 1
Part of the soft ground is captured in the box-shaped space formed by the foot plate 13 and the foot plate 13, and the soft ground 1 has a supporting force capable of supporting the artificial fish reef.
Raise to 5. In the leg plate 13 of this embodiment, the soft ground 15 is used.
Because the earth pressure is applied from the ground, the horizontal force of the seawater flow acts on the artificial reef to move the artificial reef horizontally, or to try to overturn (unequal subsidence) resistance of the earth pressure from the soft ground side. As a result, it can be stably installed on the soft ground 15. In particular, by placing the rock mass 14 on the substrate 1, the total mass of the artificial fish reef is increased, the influence of the force of water and waves is reduced, and the artificial fish reef can be installed more stably.
【００１０】又、本実施例の人工魚礁の基板１より上方
部分は軟弱地盤１５の表面より上方にあって、外柵２，
外枠部材１０，岩塊１４，消波板１２は魚礁として機能
する。特に、岩塊１４は自然の岩場による魚礁を作り出
し、魚の集魚力・魚巣としての効果を高める。又外柵
２，外枠部材１０，基板１・支柱１１が鋼製であるの
で、魚・海藻の定着を有利にしている。消波板１２は海
流の流れ・海浪を弱め、魚が好む渦・気泡及び影を作り
出す。以上の結果、外柵２，岩塊１４，外枠部材１１に
は海藻の付着・成長が良好で、魚・幼魚が多く集まり、
魚礁としての機能が高いものとなった。Further, the portion of the artificial fish reef of this embodiment above the substrate 1 is above the surface of the soft ground 15, and the outer fence 2,
The outer frame member 10, the rock mass 14, and the wave-eliminating plate 12 function as a fish reef. In particular, the rock mass 14 creates a fish reef by a natural rocky place, and enhances the effect of collecting fish and a fish nest. Moreover, since the outer fence 2, the outer frame member 10, the substrate 1 and the support 11 are made of steel, the fixation of fish and seaweed is made advantageous. The wave-eliminating plate 12 weakens the flow of ocean currents and ocean waves, and creates vortices, bubbles and shadows that fish prefer. As a result, seaweed adhered and grew well on the outer fence 2, rock mass 14, and outer frame member 11, and many fish and juvenile fish gathered there.
The function as a fish reef became high.
【００１１】[0011]
【発明の効果】以上の様に本発明によれば、基板の外周
下縁の脚板及び基板上の岩塊の重みによって、人工魚礁
を軟弱地盤に埋設させることなく且つ転倒・滑りもなく
安定して軟弱地盤上に設置できるものとした。又、基板
上の岩塊は自然の魚礁に近い高い集魚力と魚巣機能を生
み、魚・海藻等の定着性を高めた。更に、外柵及び外枠
部材を中空パイプの鋼製とすれば人工魚礁の沈下量を少
なくし、且つ鋼による海藻の付着を多くする。消波板を
設ければ魚の好む気泡・渦・影を作り出すことができ、
集魚・魚巣の機能を高める。As described above, according to the present invention, the artificial fish reef is not buried in the soft ground and is stable and does not fall or slide due to the weight of the leg plate at the outer peripheral lower edge of the substrate and the rock mass on the substrate. It can be installed on soft ground. In addition, the rock mass on the substrate produced high fish-collecting power and fish nest function close to those of natural reefs, and enhanced the ability to fix fish and seaweed. Furthermore, if the outer fence and the outer frame member are made of steel, which is a hollow pipe, the subsidence amount of the artificial fish reef is reduced and the adhesion of seaweed by the steel is increased. If you install a wave-dissipating plate, you can create bubbles, vortices, and shadows that fish prefer,
Enhances the function of collecting fish and nests.
【図１】本発明の実施例の斜視図である。FIG. 1 is a perspective view of an embodiment of the present invention.
【図２】実施例の正面図である。FIG. 2 is a front view of the embodiment.
【図３】実施例の平面図である。FIG. 3 is a plan view of the embodiment.
【図４】実施例の側面図である。FIG. 4 is a side view of the embodiment.
【図５】実施例の図２のＡ−Ａ線における断面図であ
る。5 is a sectional view taken along line AA in FIG. 2 of the embodiment.
【図６】実施例の図３のＢ−Ｂ線における断面図であ
る。FIG. 6 is a sectional view taken along line BB in FIG. 3 of the embodiment.
【図７】実施例の図２のＣ−Ｃ線における断面図であ
る。FIG. 7 is a cross-sectional view taken along line CC of FIG. 2 of the example.
１ 基板 ２ 外柵 ３ 水平柵材 ４ 水平柵材 ５ 水平柵材 ６ 水平柵材 ７ 垂直柵材 ８ フランジ ９ フランジ １０ 外枠部材 １１ 支柱 １２ 消波板 １３ 脚板 １４ 岩塊 １５ 軟弱地盤 １６ 海面 1 Substrate 2 Outer Fence 3 Horizontal Fence Material 4 Horizontal Fence Material 5 Horizontal Fence Material 6 Horizontal Fence Material 7 Vertical Fence Material 8 Flange 9 Flange 10 Outer Frame Member 11 Strut 12 Wave-Dissipating Plate 13 Leg Plate 14 Rock Mass 15 Soft Ground 16 Sea Surface
Claims (3)
板の外周に外柵を立設して基板上に石詰め空間部を形成
する立体枠を設け、該石詰め空間部の上部に滑らかに湾
曲した外枠部材をドーム状に張り渡してドーム型天井部
を形成し、基板の下方外周に所要深さの脚板を垂設して
水平な基板を天板とし脚板を側板とする下面を開放した
箱体を形成し、該石詰め空間部に大きな岩塊を多数載置
したことを特徴とする軟弱地盤用人工魚礁。1. A horizontal base provided with a horizontal fence material around the upper side.
An outer fence is erected on the outer circumference of the board to form a stone-filled space on the board.
A three-dimensional frame is installed to smoothly fill the bay above the stone-filled space.
Domed ceiling with bent outer frame members stretched in a dome shape
To form a leg plate of the required depth on the lower outer periphery of the board.
Opened the bottom surface with the horizontal board as the top board and the leg boards as the side boards.
An artificial fish reef for soft ground, characterized by forming a box and placing a large number of large rock masses in the stone-filled space .
パイプである請求項１記載の軟弱地盤用人工魚礁。2. The artificial fish reef for soft ground according to claim 1, wherein the outer fence and the outer frame member are made of steel and are hollow pipes.
項１又は２記載の軟弱地盤用人工魚礁。3. The artificial fish reef for soft ground according to claim 1, wherein a plurality of wave-eliminating plates are provided above the substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4360907A JP2521625B2 (en) | 1992-12-28 | 1992-12-28 | Artificial fish reef for soft ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4360907A JP2521625B2 (en) | 1992-12-28 | 1992-12-28 | Artificial fish reef for soft ground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06197659A JPH06197659A (en) | 1994-07-19 |
| JP2521625B2 true JP2521625B2 (en) | 1996-08-07 |
Family
ID=18471411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4360907A Expired - Lifetime JP2521625B2 (en) | 1992-12-28 | 1992-12-28 | Artificial fish reef for soft ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2521625B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200396100Y1 (en) * | 2005-06-28 | 2005-09-15 | 박상빈 | house type art a fish-breeding ground |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56121420A (en) * | 1980-02-26 | 1981-09-24 | Shinkai Toshihiro | Prefabricated type fish bank block |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0627097Y2 (en) * | 1991-01-21 | 1994-07-27 | 株式会社東北機械製作所 | Steel fish reef |
-
1992
- 1992-12-28 JP JP4360907A patent/JP2521625B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56121420A (en) * | 1980-02-26 | 1981-09-24 | Shinkai Toshihiro | Prefabricated type fish bank block |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06197659A (en) | 1994-07-19 |
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