JP6157150B2 - Spawning reef and artificial fish reef - Google Patents

Description

The present invention relates to a spawning reef and an artificial fish reef, and more particularly to a spawning reef and an artificial fish reef suitable for providing a spawning place for marine organisms.

  For example, marine organisms such as fish, seaweeds, shellfish such as oysters and abalone, shellfish such as shrimp and crab, and molluscs such as squid and octopus that can be collected at fishing grounds up to a depth of about 100 m are valuable in themselves. In addition to being a food source, it is part of the marine ecosystem by being preyed on by other marine life.

  Therefore, it is meaningful to propagate these marine organisms, and various spawning reefs and artificial fish reefs have already been proposed (see, for example, Patent Document 1 and Patent Document 2). Patent Document 1 discloses a squid spawning reef in which a spawning unit in which a spawning panel is arranged inside a structural frame configured by arranging struts in a three-dimensional form is arranged on a base. Further, Patent Document 2 discloses a plate-like base plate formed with a water passage hole penetrating in the vertical direction at the center, and a plurality of holes that are on the bottom surface of the base and that maintain a gap between the water flow hole and the seabed. And a plurality of pillars erected around the water flow holes on the upper surface side of the base, and a seaweed reef comprising seaweed seedlings attached to these pillars.

JP 2004-236628 A JP 2009-72164 A

  By the way, some marine organisms prefer to lay eggs by avoiding dirty surfaces such as blue leopard or white flies, etc., and prefer relatively low contamination surfaces such as lime algae and barnacles. (For example, squid).

  However, in spawning reefs such as those described in Patent Document 1 and Patent Document 2, shellfish and algae adhere with the passage of time even though they have a clean spawning surface to which shellfish do not adhere when initially submerged in water. The egg-laying surface will become dirty. Therefore, it is necessary to replace the spawning reef according to the spawning time, or to lift the spawning reef immediately before the spawning time to remove the deposits, which requires much labor for the spawning reef maintenance.

The present invention has been made in view of the above-described problems, and an object thereof is to provide a spawning reef and an artificial fish reef that can reduce labor required for maintenance such as functional recovery.

According to the present invention, in a spawning reef that is installed in water and provides a spawning place for marine organisms, a substructure that can be submerged, a cathode that is disposed on the substructure and that constitutes a spawning surface, and the cathode An anode disposed at a facing position, and a plurality of electrode plates in which the cathode is disposed on one surface of the insulating plate and the anode is disposed on the other surface of the insulating plate, and the cathode of one electrode plate; Forming the egg-laying surface by disposing the electrode plate so as to face the anode of another electrode plate, and forming an electrodeposition film on the surface of the cathode by energizing between the cathode and the anode; The electrodeposition film is peeled off immediately before the spawning time of marine organisms to be proliferated to remove deposits, and then the electrodeposition film is re-formed, and the surface of the electrodeposition film is provided as the egg-laying place. A spawning reef characterized by .

Further, according to the present invention, in an artificial fish reef that is installed in the water and provides a place for marine organisms, it is a spawning reef that is installed in the water and provides a spawning place for marine organisms. A cathode disposed on the foundation structure and constituting a spawning surface, an anode disposed at a position facing the cathode, the cathode disposed on one surface of the insulating plate, and the anode disposed on the other surface of the insulating plate A plurality of arranged electrode plates, and forming the egg-laying surface by disposing the cathode of one electrode plate and the anode of another electrode plate so as to face each other, the cathode and the anode The electrodeposition film is formed on the surface of the cathode by energizing the electrode, and the electrodeposition film is removed immediately before the spawning time of the marine organisms to be propagated to remove the deposits, and then the electrodeposition film The surface of the electrodeposited coating is Comprising a spawning reef which is adapted to provide as Tokoro, wherein a concrete structure constituting the foundation structure, artificial reef is provided, characterized in that.

  Moreover, the said cathode and the said anode may be comprised with the same raw material.

  In addition, the cathode and the anode may be disposed on a support column that can be erected on the foundation structure, may be directly connected to the foundation structure, or can be submerged together with the foundation structure. It may be arranged in a simple assembling jig, or may be connected to a cable body that can be blocked and connected to the foundation structure.

  Further, in the artificial fish reef, a material having a spawning part in which the spawning reef is disposed and a living part not having the spawning reef may be used, and at least the material capable of generating iron ions may be used for the anode. .

According to the egg-laying reef and artificial fish reef according to the present invention described above, the electrodeposition film can be formed on the egg-laying surface after submerging the egg-laying reef by disposing the cathode and anode capable of forming the electrodeposition film. It is possible to attach marine organisms such as shellfish and algae to the electrodeposition film. Therefore, by removing the electrodeposition film immediately before the spawning season of marine organisms to be propagated, the deposits on the spawning surface can be easily removed, reducing the labor required for maintenance such as functional recovery. Can do.

  In particular, by reversing the polarity of the cathode and the anode, the electrodeposition coating can be easily peeled off, and the deposits attached to the electrodeposition coating can be easily removed. In addition, by using a material capable of generating iron ions for the anode of the spawning reef, it is possible to promote the generation of phytoplankton, and to propagate algae and collect fish accordingly.

It is a figure which shows the egg-laying reef and artificial fish reef which concern on 1st embodiment of this invention, (a) shows egg-laying reef, (b) has shown artificial fish reef. It is detailed explanatory drawing of a spawning reef shown to Fig.1 (a). It is a figure which shows the modification of spawning reef shown in FIG. 2, (a) has shown the 1st modification, (b) has shown the 2nd modification. It is a flowchart which shows the spawning place provision method of the marine organisms concerning this invention. It is explanatory drawing which shows the process of an electrodeposition film, (a) is an electrodeposition film formation process, (b) is an electrodeposition film completion state, (c) is a deposit adhesion state, (d) is electrodeposition film peeling The process, (e) shows the electrodeposition film reforming process, and (f) shows the egg-laying process. It is a figure which shows the spawning reef which concerns on other embodiment of this invention, (a) has shown 2nd embodiment, (b) has shown 3rd embodiment. It is a figure which shows the spawning reef which concerns on 4th embodiment of this invention, (a) is a perspective view, (b) has shown the assembly | attachment state. It is a figure which shows the spawning reef which concerns on other embodiment of this invention, (a) is 5th embodiment, (b) is 6th embodiment, (c) is 7th embodiment, (d) is 8th. 1 shows an embodiment.

  Hereinafter, embodiments of a method for providing a spawning reef, artificial fish reef, and marine organism spawning place according to the present invention will be described with reference to FIGS. Here, FIG. 1 is a diagram showing a spawning reef and an artificial fish reef according to the first embodiment of the present invention, wherein (a) shows a spawning reef and (b) shows an artificial reef. FIG. 2 is a detailed explanatory view of the spawning reef shown in FIG.

  The spawning reef 1 according to the first embodiment of the present invention is a spawning reef that is installed in water and provides a spawning place for marine organisms as shown in FIG. 1 (a) and FIG. The structure 2, the cathode 3 that is disposed on the foundation structure 2 and that constitutes the egg-laying surface S, and the anode 4 that is disposed at a position facing the cathode 3, are provided between the cathode 3 and the anode 4. The electrodeposited film E is formed on the surface of the cathode 3 by energization, and the electrodeposited film E is removed immediately before the spawning time of marine organisms to be propagated to remove the deposits K. The surface of the electrodeposition coating E is re-formed and provided as a spawning place.

  Moreover, the artificial fish reef 9 according to the first embodiment of the present invention is an artificial fish reef that is installed in water and provides a place for marine life, and includes a spawning reef 1 described above and a concrete structure that constitutes the foundation structure 2. Is the body. That is, the artificial fish reef 9 is a concrete structure that can be submerged, and constitutes a foundation structure 2 on which the spawning reef 1 is arranged.

  The artificial reef 9 has, for example, a three-dimensional shape such as a triangular prism, a quadrangular prism, a triangular pyramid, a quadrangular pyramid, and the like, and is configured by concrete struts (frames) and wall surfaces (panels). The illustrated artificial reef 9 is formed of a concrete structure in which concrete struts (frames) are arranged in a substantially truss shape and the overall outer shape has a triangular prism shape. Further, the artificial fish reef 9 has a spawning part 91 in which the spawning reef 1 is disposed and a living part 92 in which the spawning reef 1 is not disposed, and functions are shared for breeding and fish collection. For example, as shown in the figure, the first floor portion of the artificial fish reef 9 can be the spawning section 91 that is a spawning ground, and the second floor portion can be the housing section 92 that is a fish collection ground.

  As shown in FIGS. 1A and 2, in the spawning reef 1 according to the present embodiment, a plurality of cathodes 3 are arranged on one surface of the insulating plate 5 and anodes 4 are arranged on the other surface of the insulating plate 5. The electrode plate 6 is provided, and a multi-stage egg-laying surface S is formed by arranging the cathode 3 of one electrode plate 6 and the anode 4 of another electrode plate 6 so as to face each other. The number of steps of the egg-laying surface S is not limited to the illustrated number, and can be arbitrarily set as necessary. The electrode plate 6 disposed at the uppermost portion may omit the cathode 3 as illustrated, and the electrode plate 6 disposed at the lowermost portion omits the anode 4 as illustrated. Also good.

  The insulating plate 5 is made of, for example, a flat plate-shaped plastic material or hard rubber material having a rectangular shape, and a flat plate-like cathode 3 is arranged on the lower surface thereof, and a flat plate-like anode 4 is arranged on the upper surface thereof. The cathode 3 is made of a metal material such as SUS (stainless steel) or carbon steel, and is formed in a rectangular flat plate similar to the insulating plate 5. The anode 4 is made of, for example, a metal material containing or containing magnesium, aluminum, zinc, carbon steel, titanium, SUS, silver lead, or the like as a main component, and is formed into a rectangular flat plate similar to the insulating plate 5. Note that the electrode plate 6 or the insulating plate 5 disposed at the uppermost portion may be formed larger than the other electrode plates 6 disposed at the lower portion and used as a light shielding plate.

  As shown in FIG. 2, the plurality of electrode plates 6 are supported in parallel at appropriate intervals on the pillars 7 that can stand on the foundation structure 2. At this time, the adjacent electrode plates 6 are arranged so that the cathode 3 and the anode 4 face each other. The number of the columns 7 is appropriately changed depending on conditions such as the size and weight of the electrode plate 6, but is preferably at least three in view of stability.

  Further, the support column 7 includes at least one first support column 71 that supplies current to the cathode 3 and at least one second support column 72 that supplies current to the anode 4. The 1st support | pillar 71 and the 2nd support | pillar 72 are comprised with the metal material which has electroconductivity. In addition, the remaining support | pillar 7 which does not supply with electricity to the cathode 3 and the anode 4 may be comprised with nonelectroconductive members, such as a plastics, and may be comprised with the metal material which performed the insulation process in the required location. .

  The first support 71 is connected to the cathode 3 by a normal bolt 71a, and is connected to the anode 4 by an insulating bolt 71b. With this configuration, the first support column 71 and the anode 4 are configured not to be short-circuited in the penetrating portion of the electrode plate 6. The second support column 72 is connected to the anode 4 by a normal bolt 72a, and is connected to the cathode 3 by an insulating bolt 72b. With this configuration, the second support column 72 and the cathode 3 are configured not to be short-circuited in the penetrating portion of the electrode plate 6. The bolts 71a and 72a and the insulating bolts 71b and 72b are preferably made of a material such as titanium that does not electrolyze.

  By arranging a plurality of electrode plates 6 (cathode 3 and anode 4) on the support 7, the spawning reef 1 having a plurality of spawning surfaces S can be unitized, and the support 7 is connected to the foundation structure 2. Thus, the spawning reef 1 can be arranged on the foundation structure 2. That is, the cathode 3 and the anode 4 are disposed on the support column 7 (including the first support column 71 and the second support column 72) that can stand on the foundation structure 2. In addition, by constructing the spawning reef 1 with the electrode plate 6 and the support 7 as described above, the parts can be transported in a state of being separated and easily assembled on site, thereby improving transport efficiency and work efficiency. be able to.

  As shown in FIG. 2, a cathode cable 71 c is connected to the first support column 71, and an anode cable 72 c is connected to the second support column 72. The cathode cable 71c and the anode cable 72c are connected to, for example, a buoy 73 when not energized and float near the water surface. With such a configuration, when energized, the ship 75 equipped with the external power source 74 is brought close to the buoy 73 and the buoy 73 is pulled up on the ship, whereby the ends of the cathode cable 71c and the anode cable 72c are pulled up on the ship. As indicated by broken lines in FIG. 6, each terminal can be connected to the external power source 74 and energized. In FIG. 2, for convenience of explanation, the spawning reef 1 is illustrated in an enlarged state with respect to the buoy 73 and the ship 75.

  Here, FIG. 3 is a figure which shows the modification of the spawning reef 1 shown in FIG. 2, (a) has shown the 1st modification, (b) has shown the 2nd modification. In the first modification shown in FIG. 3A, the cathode cable 71c and the anode cable 72c are submerged in water. For example, in a sea area where the buoy 73 cannot be installed or a sea area where the water depth is shallow, the cathode cable 71c and the anode cable 72c may be wound around an iron core or the like and placed on the seabed. When the cathode 3 and the anode 4 are energized, the diver may dive and the cathode cable 71c and the anode cable 72c are pulled up on the ship and connected to the external power source 74.

  In the second modification shown in FIG. 3B, the energization method is changed from the external power supply type to the battery type. Specifically, an ingot of a metal material such as magnesium that can be ionized in the sea (or an ingot processed into a flat plate shape) is used for the anode 4. In this case, although it takes several days to several weeks to form the electrodeposition coating E, it is not necessary to use the external power source 74, and the electrodeposition coating E can be formed only by submerging the laying reef 1 in water. it can. In the case of peeling the electrodeposited film E, for example, a method in which the cathode 3 and the anode 4 are energized and peeled using an external power source 74, a method in which the spawning reef 1 is pulled up on the ship and high-pressure washing is performed, and a diver is diving. Thus, a scraping method or the like can be appropriately selected and employed.

  The spawning reef 1 according to the first embodiment and the modification thereof described above is used, for example, in the method for providing a spawning place for marine organisms shown in FIG. Here, FIG. 4 is a flowchart showing a method for providing a spawning place for marine organisms according to the present invention. FIG. 5 is an explanatory view showing the process of electrodeposition coating, wherein (a) is the electrodeposition coating formation step, (b) is the electrodeposition coating completed state, (c) is the deposit adhesion state, (d) is The electrodeposition film peeling step, (e) shows the electrodeposition film re-forming step, and (f) shows the egg-laying step.

  The method for providing a spawning place for marine organisms shown in FIG. 4 is a method for providing a spawning place for marine organisms that provides a spawning place for marine organisms by installing the spawning reef 1 in the water. After that, an electrodeposition coating E is formed on a part of the spawning reef 1, and the electrodeposition coating E is removed immediately before the spawning time of marine organisms to be propagated to remove the deposits K, and then the electrodeposition coating E The surface of the electrodeposition coating E is provided as a spawning place. Specifically, it has the following Step 1 to Step 8.

  The spawning place providing method for marine organisms in the present embodiment includes an installation step (Step 1) for installing the spawning reef 1 in water, and an electrodeposition coating forming step (Step 2) for forming the electrodeposition coating E on the cathode 3 of the spawning reef 1. And a spawning time confirmation step (Step 3) for confirming whether or not it is immediately before the spawning time of marine organisms to be propagated, and an elapsed time confirmation step for confirming whether or not a certain time has passed since the formation of the electrodeposition coating E ( Step 4), an electrodeposition coating stripping step (Step 5) for stripping the electrodeposition coating E immediately before the spawning time of marine organisms to be propagated, and electrodeposition for reforming the electrodeposition coating E on the cathode 3 of the spawning reef 1 A coating re-forming step (Step 6), an egg-laying step (Step 7) in which marine organisms to be laid lay eggs on the egg-laying surface S, and a hatching step (Step 8) in which eggs of marine organisms to be propagated are hatched ing.

  In the installation step (Step 1), the spawning reef 1 is placed on an artificial fish reef 9 as shown in FIG. 1B, for example, and submerged in water. When the spawning reef 1 is submerged in water, the attachment of marine organisms with strong fertility such as shellfish and algae will start. Therefore, it is preferable to start the formation of the electrodeposition coating E simultaneously with or immediately after the spawning reef 1 is submerged in water. By forming the electrodeposition coating E on a part of the spawning reef 1 (for example, the cathode 3), the deposit K can be easily removed even when marine organisms such as shellfish and algae adhere.

  The electrodeposition coating formation step (Step 2) is a step of energizing the cathode 3 and the anode 4 to form the electrodeposition coating E on the surface of the cathode 3 (the egg-laying surface S). For example, as shown in FIG. 5A, when the cathode 3 and the anode 4 are energized, magnesium ions and calcium ions present in seawater are converted into Mg (OH) 2 and CaCO 3 compounds as the cathode 3. To be deposited on the surface. By performing this energization step according to the required thickness of the electrodeposition coating E, for example, for a period of several days to several weeks, as shown in FIG. An electrodeposition coating E having a predetermined thickness can be formed on the surface S).

  Here, the principle of the method for forming the electrodeposition coating E will be described. When electricity is passed between the cathode 3 and the anode 4, hydrogen and hydroxide ions are generated near the surface of the cathode 3 by an electrolysis reaction of water. Hydrogen evolves into the air, and hydroxide ions increase the pH value. When the PH value rises to 8 or more, calcium ions and carbonate ions in seawater are combined to form calcium carbonate (CaCO3). When the PH value rises to 9 or more, magnesium ions and hydroxide ions are combined to form magnesium hydroxide Mg (OH) 2.

  The formed fine particles of CaCO3 and Mg (OH) 2 are suspended in the vicinity of the surface of the cathode 3 in a colloidal form, but the surface of the fine powder is charged positively (+) or negatively (-). CaCO3 particles are charged positively (+) when PH is less than 9, and charged negatively (-) when PH exceeds 9. On the other hand, Mg (OH) 2 particles are charged positive (+) when PH is less than 11, and charged negative (−) when PH exceeds 11.

  Further, since the hydroxide ion concentration on the surface of the cathode 3 is highest on the surface and decreases as the distance from the surface increases, a gradient of PH value occurs in the vicinity of the surface of the cathode 3. The magnitude of this gradient increases as the current density of the cathode 3 increases.

  Assuming that the PH value of the surface of the cathode 3 is about 10 by energization with an appropriate current density, Mg (OH) 2 is charged positively (+), and thus adheres to the surface by electrophoresis. Since it is negatively charged at its PH, it repels electrically and leaves the surface slightly. At a slightly distant position, the PH value decreases to less than 9, so CaCO3 is charged positively (+) and is attracted to the cathode 3 and stays there. As a result, an Mg (OH) 2 layer is formed in the immediate vicinity of the surface of the cathode 3, a CaCO 3 layer is formed on the outside, and a two-layer electrodeposition coating E (electrocoating) of CaCO 3 .Mg (OH) 2 is formed. Is formed.

  As shown in FIG. 5 (b), the egg-laying time confirmation step (Step 3) is performed after the electrodeposition film E is formed (completed), that is, in the state where the amount of deposits K is small, the egg-laying of marine organisms to be propagated This is a step of confirming whether or not the time has come. When it is just before the spawning time of marine organisms to be propagated (Y), since the deposit K is in a small state, the electrodeposition coating E is not peeled off and provided as a spawning place as it is. Move to (Step 6). If it is not immediately before the spawning time of marine organisms to be propagated (N), it is left as it is until the spawning time comes.

  The elapsed time confirmation step (Step 4) is a step of confirming whether or not a certain time has elapsed since the formation or completion (including re-formation) of the electrodeposition coating E. When a certain time (for example, about one month) has elapsed from the start or completion to the egg-laying time after the formation of the electrodeposition coating E (Y), as shown in FIG. There is a possibility that a certain amount of deposit K is generated on the coating E. Therefore, the soiled electrodeposition coating E is removed just before the egg-laying time, and the deposit K is removed from the cathode 3. On the other hand, when a certain time (for example, about one month) has not elapsed from the start or completion of the electrodeposition coating E to the egg-laying time (for example, about one month), the amount of the deposit K attached to the electrodeposition coating E is small. Therefore, the electrodeposition coating E is provided as it is as an egg-laying place without peeling off. The elapsed time confirmation step (Step 4) may be omitted, and the electrodeposition coating E may be peeled off immediately before the egg-laying time.

  The electrodeposition coating peeling step (Step 5) is a step of removing the deposit K attached to the electrodeposition coating E by peeling the electrodeposition coating E from the egg-laying surface S. The electrodeposition coating E can be peeled off, for example, by applying a current between the cathode 3 and the anode 4 and adjusting the applied current value, as shown in FIG. As described above, as the current density of the cathode 3 increases, the pH value of the surface of the cathode 3 increases. When the PH value exceeds 11, both the CaCO3 and Mg (OH) 2 particles are negatively charged (-), repelling the cathode 3 and peeling off the electrodeposition coating E. Further, when the current density is increased, the amount of hydrogen gas generated on the surface of the cathode 3 increases, and the electrodeposition coating E is physically peeled off due to the generation of hydrogen gas.

  In addition, the peeling method of the electrodeposition coating E mentioned above is a mere example, You may employ | adopt the method which replaces the electrode of the cathode 3 and the anode 4 (polarity inversion), pulls up the spawning reef 1 on board, and is high voltage | pressure. A method of cleaning may be employed, or a method of diving and scraping a diver may be employed.

  Further, when the polarity is reversed as a method for peeling the electrodeposition coating E, the cathode 3 and the anode 4 are preferably made of the same material. By forming the cathode 3 and the anode 4 from the same material, the electrodeposition coating E can be arbitrarily formed and peeled off on either the surface of the cathode 3 or the surface of the anode 4. Therefore, the formation place and formation time of the electrodeposition coating E can be arbitrarily set according to the habits of marine organisms to be propagated.

  Even when the current density is adjusted as a method of peeling the electrodeposition coating E, it is necessary to distinguish the cathode 3 and the anode 4 when the egg-laying reef 1 is assembled by configuring the cathode 3 and the anode 4 with the same material. Therefore, it is possible to reduce the work load of the assembly process.

  The electrodeposition coating re-forming step (Step 6) is a step of forming the electrodeposition coating E again on the surface of the cathode 3 from which the deposit K has been removed. By peeling off the electrodeposited coating E, it is possible to provide a clean egg-laying place preferred by marine organisms to be propagated, but at the same time, attachment of marine organisms with strong fertility is also started. When marine organisms other than these breeding targets adhere to the surface of the cathode 3, it is difficult to peel off the deposit K even if current is applied between the cathode 3 and the anode 4.

  Therefore, immediately after the electrodeposition coating E is peeled off, as shown in FIG. 5 (e), by re-forming the electrodeposition coating E on the surface of the cathode 3, a beautiful egg-laying place preferred by marine organisms to be propagated is obtained. The deposit K can be formed on the surface of the electrodeposition coating E, and the deposit K can be easily removed together with the electrodeposition coating E.

  The clean egg-laying surface S immediately after re-forming the electrodeposition coating E is provided as a spawning place for marine organisms to be propagated as shown in FIG. 5 (f), and the egg R is laid (the egg-laying process ( Step 6)). When the egg R hatches (the hatching step (Step 7)), the surface of the electrodeposition coating E becomes a dirty surface with the shell of the egg R and other marine organism deposits K attached thereto. And in order to stain the egg-laying surface S until the next egg-laying time comes, it is left as it is, and when the next egg-laying time comes, the electrodeposition film E is peeled off and the electrodeposition film E is re-formed. Thereafter, by repeating the egg-laying time confirmation step (Step 3) to the hatching step (Step 7), it is possible to provide a suitable egg-laying place according to the egg-laying time for marine organisms to be propagated.

  According to the spawning reef 1, artificial fish reef 9, and marine organism spawning site providing method according to the above-described embodiment, the cathode 3 and the anode 4 capable of forming the electrodeposited coating E are disposed, so that the spawning reef 1 is submerged. Then, an electrodeposited film E can be formed on the egg-laying surface S, and marine organisms such as shellfish and algae can be attached to the electrodeposited film E. Therefore, the deposit K on the spawning surface S can be easily removed by peeling off the electrodeposition coating E immediately before the spawning time of marine organisms to be propagated, reducing the labor required for maintenance such as functional recovery. can do.

  In addition, as shown in FIG. 1B, when the artificial fish reef 9 includes the egg-laying portion 91 in which the egg-laying reef 1 is disposed and the housing part 92 in which the egg-breaking reef 1 is not disposed, at least the egg-laying reef 1. A material capable of generating iron ions such as carbon steel may be used for the anode 4. With this configuration, not only the formation of the electrodeposited coating E but also the generation of phytoplankton can be promoted, and algae can be propagated and fish collected accordingly.

  Next, a spawning reef 1 according to another embodiment of the present invention will be described with reference to FIGS. Here, FIG. 6 is a figure which shows the spawning reef which concerns on other embodiment of this invention, (a) has shown 2nd embodiment, (b) has shown 3rd embodiment. FIG. 7 is a view showing a spawning reef according to a fourth embodiment of the present invention, where (a) shows a perspective view and (b) shows an assembled state. FIG. 8 is a diagram showing a spawning reef according to another embodiment of the present invention, in which (a) is a fifth embodiment, (b) is a sixth embodiment, (c) is a seventh embodiment, (d ) Shows the eighth embodiment. In addition, about the same component as the egg-laying reef 1 and artificial fish reef 9 which concern on 1st embodiment mentioned above, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  The spawning reef 1 according to the second embodiment and the third embodiment shown in FIGS. 6A and 6B is the spawning reef 1 even when the artificial fish reef 9 is inclined by an obstacle 93 such as a rock. The level can be maintained. Specifically, a plurality of electrode plates 6 including a cathode 3 and an anode 4 are connected to a support body 7 and connected to a rope body 11 that is blocked and connected to an artificial fish reef 9 that is a foundation structure 2. Yes.

  In the second embodiment shown in FIG. 6A, the rope body 11 is connected to the lower part of the spawning reef 1 and the floating body 12 is connected to the upper part. The cable body 11 is, for example, a member such as a wire or a chain, and may be connected by a rotary joint or a universal joint so that twisting does not occur at a connection portion with the artificial reef 9 or the spawning reef 1. As shown in the figure, the floating body 12 has a buoyancy that can float the spawning reef 1 in water.

  In the third embodiment shown in FIG. 6 (b), the rope body 11 is connected to the upper part of the spawning reef 1, and the weight body 13 is connected to the lower part. The cable body 11 has the same configuration as that of the second embodiment. As shown in the figure, the weight body 13 has a weight that can load gravity larger than the buoyancy generated in the spawning reef 1.

  According to the second embodiment and the third embodiment described above, the level of the spawning reef 1 can be maintained regardless of the posture of the artificial fish reef 9, and the spawning suitable for marine organisms that prefer the horizontal spawning surface S. A place can be provided. Moreover, since the laying reef 1 can move or change direction following the flow of the tide, it can improve the tide in the gap in the laying reef 1 and includes components necessary for hatching. Fresh seawater can also be efficiently sent to the spawning site.

  Moreover, according to 2nd embodiment mentioned above, since it has the floating body 12, when the egg-laying reef 1 is collect | recovered on a ship, collection | recovery operation | work can be performed easily. Moreover, in the installation process, it is possible to easily settle down by connecting a weight body that generates gravity larger than the buoyancy of the floating body 12.

  Moreover, according to 3rd embodiment mentioned above, since it has the weight body 13, when installing the spawning reef 1 in the submerged artificial fish reef 9, it can be made to self-sink easily and installation work, for example. Can be reduced. Further, in the recovery step, by connecting a floating body that generates a buoyancy greater than the gravity of the weight body 13, it is possible to easily float on the water surface.

  The spawning reef 1 according to the fourth embodiment shown in FIGS. 7A and 7B is arranged in an assembling jig 94 that can submerge together with the artificial fish reef 9 that is the foundation structure 2. For example, an artificial fish reef 9 having a triangular prism frame structure or panel structure as shown in FIG. 7B is assembled by using an assembly jig 94 having a frame structure as shown in FIG. There are many. In an ordinary artificial reef 9, it is common to remove the assembly jig 94 after completion, but the removal process of the assembly jig 94 requires a certain amount of time and labor.

  Therefore, in this embodiment, the spawning reef 1 including the cathode 3 and the anode 4 is connected to the assembly jig 94 as a unit, and the artificial fish reef 9 is submerged without removing the assembly jig 94. . With this configuration, the step of removing the assembly jig 94 can be omitted.

  The spawning reef 1 according to the fifth embodiment shown in FIG. 8A is obtained by directly connecting the cathode 3 and the anode 4 to the concrete structure as the foundation structure 2. The foundation structure 2 is a concrete structure having a shelf shape, for example. For example, the cathode 3 is disposed on the inner upper surface of the shelf of the foundation structure 2, and the anode 4 is disposed on the inner lower surface of the shelf of the foundation structure 2. The number of shelves of the foundation structure 2 is not limited to one, and a plurality of shelves may be formed, and a plurality of cathodes 3 and anodes 4 may be arranged. A power source for energizing the cathode 3 and the anode 4 is not shown, but may be an external power source type or a battery type as shown in the first embodiment and its modifications. .

  In the egg-laying reef 1 according to the sixth embodiment shown in FIG. 8 (b), the electrode plate 6 shown in the first embodiment is unitized by the support column 7, and the egg-laying surface S is held horizontally by the support member 14 and the foundation. It is arranged on the side surface of the structure 2. According to this configuration, the egg-laying reef 1 can be arranged using the wall surface portion of the artificial fish reef 9, and the egg-laying reef 1 can be arranged at a suitable location according to the structure of the artificial fish reef 9.

  The egg-laying reef 1 according to the seventh embodiment shown in FIG. 8 (c) is a foundation in which the electrode plate 6 shown in the first embodiment is unitized by the support 7 and the egg-laying surface S is held vertically by the support member 14. It is arranged on the floor portion of the structure 2. With such a configuration, it is possible to provide a suitable egg-laying surface S using the egg-laying reef 1 for marine organisms that prefer wall surfaces as egg-laying places.

  The egg-laying reef 1 according to the eighth embodiment shown in FIG. 8 (d) is a basic structure in which the electrode plate 6 shown in the first embodiment is unitized by the support 7 and the egg-laying surface S is held vertically by the support 7. It is arranged on the side part of the body 2. Even with such a configuration, it is possible to provide a suitable spawning surface S using the spawning reef 1 for marine organisms that prefer wall surfaces as spawning places.

  In the sixth embodiment to the eighth embodiment described above, an example of the arrangement method of the laying reef 1 has been described. However, the arrangement method of the laying reef 1 is not limited to the illustrated one, and the laying reef 1 is arranged on an inclined surface. Alternatively, it may be connected to the foundation structure 2 via the cable body 11 as shown in the second embodiment or the third embodiment.

  The present invention is not limited to the above-described embodiment, and the design conditions such as the shape, spacing, and placement location of the cathode 3 and the anode 4 can be appropriately changed according to the habits of marine organisms to be propagated. Of course, various modifications can be made without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 Spawning reef 2 Substructure 3 Cathode 4 Anode 5 Insulation plate 6 Electrode plate 7 Post 9 Artificial reef 11 Rope 12 Floating body 13 Weight 14 Support member 71 First support 71a, 72a Bolt 71b, 72b Insulation bolt 71c Cathode cable 72 Second support 72c Anode cable 73 Buoy 74 External power supply 75 Ship 91 Spawning section 92 Housing section 93 Obstacle 94 Assembly jig

Claims (5)

In spawning reefs that are installed in water and provide a place for spawning marine organisms,
A submersible substructure,
A cathode disposed on the foundation structure and constituting a spawning surface;
An anode disposed at a position facing the cathode;
A plurality of electrode plates in which the cathode is disposed on one surface of the insulating plate and the anode is disposed on the other surface of the insulating plate;
Forming the egg-laying surface by placing the cathode of one electrode plate and the anode of another electrode plate so as to face each other;
After applying an electric current between the cathode and the anode to form an electrodeposited film on the surface of the cathode, after removing the deposit by peeling off the electrodeposited film immediately before the spawning time of marine organisms to be propagated The electrodeposition coating is reformed and the surface of the electrodeposition coating is provided as the spawning place.
Spawning reef characterized by that. The egg-laying reef according to claim 1 , wherein the cathode and the anode are made of the same material. The cathode and the anode are arranged on a support column that can stand on the foundation structure, directly connected to the foundation structure, and arranged on an assembly jig that can sink with the foundation structure. The spawning reef according to claim 1 , wherein the spawning reef is connected to a cord that is blocked or connectable to the substructure. In an artificial reef that is installed underwater and provides a place for marine life,
An artificial fish reef comprising the egg-laying reef according to any one of claims 1 to 3 , which is a concrete structure constituting the foundation structure. 5. The material according to claim 4 , further comprising: a spawning part in which the spawning reef is disposed; and a living part in which the spawning reef is not disposed, and at least a material capable of generating iron ions is used for the anode. Artificial fish reef.