JP6463298B2 - Seaweed reef - Google Patents

Seaweed reef Download PDF

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JP6463298B2
JP6463298B2 JP2016085811A JP2016085811A JP6463298B2 JP 6463298 B2 JP6463298 B2 JP 6463298B2 JP 2016085811 A JP2016085811 A JP 2016085811A JP 2016085811 A JP2016085811 A JP 2016085811A JP 6463298 B2 JP6463298 B2 JP 6463298B2
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一司 十河
一司 十河
慶寛 末永
慶寛 末永
響子 青木
響子 青木
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    • 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
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    • 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
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本発明は藻場礁に関するものである。   The present invention relates to a seaweed reef.

瀬戸内海などの浅瀬においては藻が生育することによって海水中のプランクトンが生育する環境が創られ、プランクトンが生育すると小魚が生育するというように、海中における生物の循環が促進される。 In shallow waters such as the Seto Inland Sea, the growth of algae creates an environment in which plankton in the seawater grows, and the growth of plankton promotes the circulation of organisms in the sea.

１９７０年代においては冨栄養化で赤潮が発生していたのであるが、近時は、瀬戸内海などの浅瀬においては磯焼け（貧栄養化）現象などにより、藻の生育しやすい環境が少なくなっている。このため藻の苗を海中に植える活動なども行われているが、人手がかかるため長期にわたって継続的に活動することは困難をきたしている。又、従来ある、魚の繁殖のための漁礁を海中に沈めて藻の生育を図ることも試みられているが、従来ある漁礁はかさ高く重量も大きいため作業には専用の作業船を要するなど費用も大きくなるとともに、藻の生育もよいと言えず、藻の生育に適しているとはいえないものであった。   In the 1970s, red tides were generated due to drought nutrition, but recently, in shallow waters such as the Seto Inland Sea, the environment for easy growth of algae has decreased due to the phenomenon of burning (oligotrophic). Yes. For this reason, activities such as planting algae seedlings in the sea are also being carried out, but it is difficult to continuously operate over a long period of time because of the labor involved. In addition, attempts have been made to grow algae by submerging fish reefs for fish breeding in the sea, but conventional fish reefs are bulky and heavy, requiring a dedicated work boat for work. However, the growth of the algae was not good, and it was not suitable for the growth of the algae.

本発明は、このような現状に鑑み、通常の漁船によって作業ができる程度の大きさ及び重量であって、藻の生育を図るのに適する藻場礁を提供することを課題とするものである。   In view of such a current situation, the present invention has an object to provide a seaweed reef that has a size and weight that can be worked by a normal fishing boat and is suitable for growing algae. .

本発明に係る藻場礁は、台盤部材と、突起部材とを備え
台盤部材は、ポーラスコンクリート製であって、前後に前壁と後壁とを有し、前壁と後壁との間の、左右中央に前後に水平な平坦部が形成され、平坦部の左右に左傾斜面及び右傾斜面が形成され、左傾斜面の下端から左側壁が連設され、右傾斜面の下端から右側壁が連設され、前壁、後壁、左側壁及び右側壁によって周囲が囲まれると共に、この囲まれた空間内を平坦部及び左右傾斜面によって閉塞して、内部に下方に開口した空部が形成され、平坦部に前後３個の貫通穴が形成されると共に左右傾斜面にそれぞれ斜面に直交する方向に傾斜した３個ずつの貫通穴が形成され、
突起部材は、ポーラスコンクリート製であって直径の大きい上部円柱部と、普通のコンクリート製であって上部円柱部より直径の小さい下部円錐部とを備え、下部円錐部は前記貫通穴に挿通可能な太さに形成されると共に上部円柱部の下端は前記貫通穴の上端周縁に係止される太さに形成されており、上部円柱部の周面はクヌギ、松などの表面のように凹凸模様のある擬木形状に形成されると共に上部円柱部の上端面には軸方向に深いポケット穴が形成されてなり、
前記台盤部材の前記貫通穴の内、平坦部の中央を除いて、前記突起部材の下部円錐部が挿通されて設置され、前記ポケット穴内に養分物質が充填されてなることを特徴とする。 The seaweed reef according to the present invention includes a base plate member and a projecting member, and the base plate member is made of porous concrete, and has a front wall and a rear wall in the front and rear, and a front wall and a rear wall. A horizontal flat part is formed in the center between the left and right sides, a left inclined surface and a right inclined surface are formed on the left and right sides of the flat part, a left side wall is continuously provided from a lower end of the left inclined side, and a right side wall is provided from a lower end of the right inclined side. Connected and surrounded by the front wall, rear wall, left side wall, and right side wall, and the enclosed space is closed by a flat part and left and right inclined surfaces, forming a hollow part that opens downward inside The front and rear through holes are formed in the flat part, and the three through holes inclined in the direction perpendicular to the inclined surface are formed in the left and right inclined surfaces,
The protruding member includes an upper cylindrical portion made of porous concrete and having a large diameter, and a lower conical portion made of ordinary concrete and having a diameter smaller than that of the upper cylindrical portion, and the lower conical portion can be inserted into the through hole. The upper cylindrical part is formed to have a thickness and the lower end of the upper cylindrical part is locked to the periphery of the upper end of the through hole, and the peripheral surface of the upper cylindrical part is an uneven pattern like a surface of kunugi, pine, etc. A deep pocket hole is formed in the axial direction on the upper end surface of the upper cylindrical part, and is formed in a pseudo-tree shape with
The bottom conical portion of the protruding member is inserted and installed except for the center of the flat portion in the through hole of the base plate member, and the pocket hole is filled with a nutrient substance.

本発明はこのようになることにより、藻の着生に優れた藻場礁が提供できるものである。しかも作業性がよく大きな重機を要することなく、漁船などによって十分に運搬・設置をすることができるので、地方の自治体や漁業組合などの負担も軽く、広く普及を図ることができ、藻の生育を促進することができる効果を有するものである。   In this way, the present invention can provide an algae reef excellent in algae growth. Moreover, because it is easy to work and can be transported and installed by fishing boats without requiring large heavy machinery, the burden on local governments and fishermen's associations is light and can be widely spread, and algae grows. It has the effect which can promote.

本発明の藻場礁の一実施例の斜視図である。It is a perspective view of one Example of the seaweed reef of this invention. 本発明の藻場礁の一実施例の正面図である。It is a front view of one Example of the seaweed reef of this invention. 本発明の藻場礁の一実施例の側面図である。It is a side view of one Example of the seaweed reef of this invention. 本発明の藻場礁の一実施例の平面図である。It is a top view of one Example of the seaweed reef of this invention. 図４のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 図４のＢ−Ｂ線断面図であるFIG. 5 is a sectional view taken along line B-B in FIG. 4. 本発明の藻場礁の一実施例の分解斜視図である。It is a disassembled perspective view of one Example of the seaweed reef of this invention. 本発明の藻場礁の他の実施例の斜視図である。It is a perspective view of other examples of a seaweed reef of the present invention. 図８のＣ−Ｃ線断面図である。It is CC sectional view taken on the line of FIG. 図８のＤ−Ｄ線断面図である。It is the DD sectional view taken on the line of FIG.

次に本発明の具体的構成につき図面を参照しながら説明する。
まず本発明に係る藻場礁１は、下段に台盤部材５が設置され、この台盤部材５に突起部材７が設置されてなるものである。 Next, a specific configuration of the present invention will be described with reference to the drawings.
First, the seaweed reef 1 according to the present invention is configured such that a base plate member 5 is installed at a lower stage, and a projection member 7 is installed on the base plate member 5.

台盤部材５は、ポーラスコンクリート製であって、前後に前壁５１と後壁５２とを有し、前壁５１と後壁５２との間の、左右中央に前後に水平な平坦部５３が形成され、平坦部５３の左に左傾斜面５４が形成され、右に右傾斜面５５が形成されている。左傾斜面５４と右傾斜面５５とは左右に等角に傾斜しており、水平面に対して２０度から４５度の傾斜であるのが好ましく、より好ましくは２５度から３５度がよい。角度が小さいと潮の流れに対する変化が小さく大きいと流れに対する抵抗が大きすぎる。   The base member 5 is made of porous concrete, and has a front wall 51 and a rear wall 52 at the front and rear, and a flat portion 53 that is horizontal between the front wall 51 and the rear wall 52 at the center in the left and right direction. The left inclined surface 54 is formed on the left of the flat portion 53, and the right inclined surface 55 is formed on the right. The left inclined surface 54 and the right inclined surface 55 are inclined equilaterally to the left and right, and are preferably inclined at 20 to 45 degrees with respect to the horizontal plane, more preferably 25 to 35 degrees. If the angle is small, the change to the tide flow is small and the resistance to the flow is too large.

左傾斜面５４の下端５４１から左側壁５６が連設され、右傾斜面５５の下端５５１から右側壁５７が連設されている。前壁５１、後壁５２、左側壁５６及び右側壁５７によって周囲が囲まれると共に、この囲まれた空間内を平坦部５３及び左右傾斜面５４，５５によって被覆して、内部に下方に開口した空間４が形成され、この空間４は、海底に向け開いている。平坦部５３には前後３個の貫通穴６が形成されると共に左右傾斜面５４，５５にそれぞれ斜面に直交する方向に傾斜した３個ずつの貫通穴６が形成されている。   A left side wall 56 is connected from the lower end 541 of the left inclined surface 54, and a right side wall 57 is connected from the lower end 551 of the right inclined surface 55. The front wall 51, the rear wall 52, the left side wall 56, and the right side wall 57 surround the periphery, and the enclosed space is covered with a flat portion 53 and left and right inclined surfaces 54, 55, and is opened downward inside. A space 4 is formed, and this space 4 is open toward the seabed. The flat portion 53 is formed with three through-holes 6 in the front and rear, and three through-holes 6 are formed in the left and right inclined surfaces 54 and 55 that are inclined in a direction perpendicular to the inclined surfaces.

突起部材７は、上半部分が上部円柱部７１に形成され、下半部分が下部円錐部７２に形成されている。上部円柱部７１はポーラスコンクリート製で製作されており、その周面７３は、クヌギや松などの凹凸ある表面模様を有する擬木状に形成されている。このようにすることにより、浮遊する胞子の定着がよくなる。下部円錐部７２は普通のコンクリート製であって上部円柱部７１より直径が小さく、下部円錐部７２は台盤部材５の貫通穴６に挿通可能な太さに形成されると共に上部円柱部７１の下端７１１は貫通穴６の上端周縁８に係止される太さに形成されている。上部円柱部７１の上端面７４には軸方向に深いポケット穴７５が形成されており、ポケット穴７５内に養分物質９が充填される。養分物質９は、魚肉分解物質をゲル化剤で固形化したものが好適に使用され、栄養塩等が少しずつ溶出し、藻類への栄養を補給する。   The protruding member 7 has an upper half portion formed in the upper cylindrical portion 71 and a lower half portion formed in the lower conical portion 72. The upper cylindrical portion 71 is made of porous concrete, and its peripheral surface 73 is formed in a pseudo-wood shape having an uneven surface pattern such as kunugi or pine. By doing so, fixation of floating spores is improved. The lower conical portion 72 is made of ordinary concrete and has a diameter smaller than that of the upper cylindrical portion 71, and the lower conical portion 72 is formed to have a thickness that can be inserted into the through hole 6 of the base plate member 5. The lower end 711 is formed in a thickness that is locked to the upper end peripheral edge 8 of the through hole 6. A deep pocket hole 75 is formed in the upper end surface 74 of the upper cylindrical portion 71 in the axial direction, and the nutrient substance 9 is filled in the pocket hole 75. The nutrient substance 9 is preferably a solidified fish meat decomposition substance with a gelling agent. Nutrient salts and the like are gradually eluted to replenish nutrients to the algae.

台盤部材５の貫通穴６の内、平坦部５３の中央を除いて、突起部材７の下部円錐部７２が挿通されて設置される。   The lower conical part 72 of the protruding member 7 is inserted and installed except for the center of the flat part 53 in the through hole 6 of the base member 5.

本発明の藻場礁１を海底に設置し１年経過後に確認する実験をしたところ、突起部材７の周面に多くの藻の生育が確認されると共に、付着生物及び動物として、多くの軟体動物、環形動物及び節足動物の生息を確認できた。付着生物としては、採取面積０．１０平方メートルについて、ワカメ１１９０ｇ（湿重量）及びアカモク２６１０ｇ（湿重量）を確認した。また、軟体動物としては、ウスヒザラガイ、ヒゲヒザラガイ、ムカデガイ、バイガイ、フトコロガイ、フネガイ、イガイ、イタボガキ、チリハギガイ、ツクエガイが確認された。環形動物としては、ウロコムシ、ゴカイ、オフェリアゴカイ、カンザシゴカイが確認された。節足動物としては、フジツボ、エンマヨコエビ、ワレカラ、コツブムシ、モエビ、サクラエビ、コシオリエビ、カニダマシ、Ｍｅｎｉｐｐｉｄａｅ、モガニ、ケブカガニが確認された。動物の個体数は、合計で２４０個体が確認され、藻場礁として生物の生育に十分な寄与をしていることが確認できた。 When the experiment was carried out to confirm the seaweed reef 1 of the present invention on the seabed after one year, many algae grew on the peripheral surface of the projecting member 7, and many soft bodies as attached organisms and animals. The presence of animals, annelids and arthropods was confirmed. As attached organisms, 1190 g (wet weight) seaweed and 2610 g (wet weight) red seaweed were confirmed for a collection area of 0.10 square meters. Moreover, as a mollusc, a mussel, a beard, a mussel, a mussel, a mussel, a fungus, a mussel, a lobster, a chisel, and a mussel were confirmed. As annelids, urocomushi, cormorant, offeria coral, and kansai coral were confirmed. As the arthropods, barnacles, shrimp, shrimp, shrimp, moe shrimp, sakura shrimp, kosioribi, crab beetle, Menippidae, mogani, keb crab were confirmed. A total of 240 animals were confirmed, confirming that they contributed sufficiently to the growth of organisms as seaweed reefs.

図１乃至図７は、本発明の一実施例を示しており、この例は、主に岩場に使用する藻場礁を示している。図８乃至図１０は、本発明の他の実施例を示しており、この例は主に砂地に使用する藻場礁を示している。
図８乃至図１０に示す例は、台盤部材５の下端に周囲に広がる鍔部３を形成している。これにより藻場礁１が砂地の中に沈みにくく、藻の生育に適するものである。 FIG. 1 to FIG. 7 show an embodiment of the present invention, and this example shows a seaweed reef mainly used for a rocky place. 8 to 10 show another embodiment of the present invention, which shows a seaweed reef mainly used for sand.
In the example shown in FIG. 8 to FIG. 10, a flange 3 that extends to the periphery is formed at the lower end of the base member 5. As a result, the seaweed reef 1 is unlikely to sink into the sand and is suitable for algae growth.

１ 藻場礁
５ 台盤部材
６ 貫通穴
７ 突起部材
９ 養分物質
５１ 前壁
５２ 後壁
５３ 平坦部
５４ 左傾斜面
５５ 右傾斜面
５６ 左側壁
５７ 右側壁
７１ 上部円柱部
７４ 上端面
７５ ポケット穴 DESCRIPTION OF SYMBOLS 1 Algae reef 5 Base plate member 6 Through hole 7 Protrusion member 9 Nutrient substance 51 Front wall 52 Rear wall 53 Flat part 54 Left inclined surface 55 Right inclined surface 56 Left side wall 57 Right side wall 71 Upper cylindrical part 74 Upper end surface 75 Pocket hole

Claims (1)

台盤部材と、突起部材とを備え
台盤部材は、ポーラスコンクリート製であって、前後に前壁と後壁とを有し、前壁と後壁との間の、左右中央に前後に水平な平坦部が形成され、平坦部の左右に左傾斜面及び右傾斜面が形成され、左傾斜面の下端から左側壁が連設され、右傾斜面の下端から右側壁が連設され、前壁、後壁、左側壁及び右側壁によって周囲が囲まれると共に、この囲まれた空間内を平坦部及び左右傾斜面によって閉塞して、内部に下方に開口した空部が形成され、平坦部に前後３個の貫通穴が形成されると共に左右傾斜面にそれぞれ斜面に直交する方向に傾斜した３個ずつの貫通穴が形成され、
突起部材は、ポーラスコンクリート製であって直径の大きい上部円柱部と、普通のコンクリート製であって上部円柱部より直径の小さい下部円錐部とを備え、下部円錐部は前記貫通穴に挿通可能な太さに形成されると共に上部円柱部の下端は前記貫通穴の上端周縁に係止される太さに形成されており、上部円柱部の周面は擬木形状に形成されると共に上部円柱部の上端面には軸方向に深いポケット穴が形成されてなり、
前記台盤部材の前記貫通穴の内、平坦部の中央を除いて、前記突起部材の下部円錐部が挿通されて設置され、前記ポケット穴内に養分物質が充填されてなることを特徴とする藻場礁。 The base member is made of porous concrete and has a front wall and a rear wall in the front and rear, and is horizontally in the front and rear between the front wall and the rear wall. The left and right inclined surfaces are formed on the left and right sides of the flat portion, the left side wall is connected from the lower end of the left inclined surface, the right side wall is connected from the lower end of the right inclined surface, the front wall and the rear wall The left and right walls surround the periphery, and the enclosed space is closed by a flat portion and left and right inclined surfaces to form a hollow portion opened downward in the interior. Through holes are formed and three through holes inclined in the direction perpendicular to the inclined surfaces are formed on the left and right inclined surfaces, respectively.
The protruding member includes an upper cylindrical portion made of porous concrete and having a large diameter, and a lower conical portion made of ordinary concrete and having a diameter smaller than that of the upper cylindrical portion, and the lower conical portion can be inserted into the through hole. The upper cylinder part is formed with a thickness and the lower end of the upper cylinder part is formed with a thickness locked to the upper edge of the through hole. A deep pocket hole is formed in the upper end surface in the axial direction.
The algae characterized in that the bottom conical portion of the protruding member is inserted through the through hole of the base plate member except for the center of the flat portion, and a nutrient substance is filled in the pocket hole. The reef.
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