JP4863685B2 - Live block structure, live block production facility, and live block installation method - Google Patents

Description

  The present invention relates to a live block produced artificially.

  Liverlock is a natural rock drawn from the coral reef sea, where bacteria that break down nitrogen compounds and the like are established. For this reason, it is used as an ideal filter medium in the breeding of saltwater fish. In Patent Document 1, at least one live block is installed in a tank, aquatic organisms, vegetation and algae are propagated on the live block, and the purification of aquarium water is promoted by the purification action of aquatic organisms, vegetation and algae. An equal water tank is disclosed.

JP 2002-262706 A

  However, live rocks are natural rocks and tend to be limited in terms of nature conservation. For this reason, in recent years, attempts have been made to artificially produce live blocks and provide them as filter media. In addition, attempts have been made to restore the underwater environment by transplanting puppies divided from relatives into artificially produced live rocks and growing them in relatives, and installing them in a predetermined sea area. Live locks used for such applications are expected to be difficult to handle because of increased dimensions and mass.

  Therefore, the present invention has been made in view of the above, and in the production of a live block artificially, a live block structure and a live block production facility that can be easily handled, and a live block The purpose is to provide an installation method.

  In order to solve the above-described problems and achieve the object, the structure for livelock according to the present invention includes a biofix layer for fixing a living organism, and a buoyancy generating means provided in the biofix layer. It is characterized by that.

  This live block structure is used for the production of live blocks in which organisms such as bacteria, algae, and cocoons are established. In this live block structure, a buoyancy generating means is provided in the biofixation layer for fixing a living organism, and a livelock is produced using this. This makes it possible to use the buoyancy of the buoyancy generating means, so that it is easy to handle when moving to the place where the live block is installed.

  The live block structure according to the present invention is characterized in that, in the live block structure according to the present invention, a plurality of the buoyancy generating means are provided inside the biofixation layer.

  This live block structure has the same structure as the live block structure, and therefore has the same operations and effects as the live block structure. Further, this live block structure includes a plurality of buoyancy generating means inside the biofix layer. Thereby, for example, even when a problem occurs in one buoyancy generating means and the buoyancy is reduced, the buoyancy can be obtained by the buoyancy generating means in which no problem occurs.

  The live block structure according to the present invention is the live block structure according to the present invention, wherein the buoyancy generating means is a hollow container provided with a communication passage communicating with the outside of the biofix layer. The container and the biofix layer are combined and integrated.

  This live block structure has the same structure as the live block structure, and therefore has the same operations and effects as the live block structure. Furthermore, this live block structure includes a hollow container as a buoyancy generating means inside the biofix layer. This hollow container has an advantage that the biofix layer 2 can be reinforced.

  The live block structure according to the present invention is characterized in that, in the live block structure according to the present invention, the buoyancy generating means is detachable from the biological fixing layer.

  This live block structure has the same structure as the live block structure, and therefore has the same operations and effects as the live block structure. Further, this live block structure allows the buoyancy generating means to be removable from the biofix layer. Thereby, the space after removing the buoyancy generating means can be used as a fishing reef, for example.

  The live block structure according to the present invention is characterized in that, in the live block structure according to the present invention, the biofix layer is a porous body.

  This live block structure has the same structure as the live block structure, and therefore has the same operations and effects as the live block structure. Further, in this live block structure, the biofix layer is composed of a porous material. This makes it possible to produce live rocks rich in bacteria and lime algae in a relatively short period of time.

  A live block structure according to the present invention is characterized in that, in the live block structure according to the present invention, the live block structure includes an individual identifying means capable of identifying itself.

  This live block structure has the same structure as the live block structure, and therefore has the same operations and effects as the live block structure. Further, since the structure for livelock is provided with individual identification means, the livelock completed by the establishment of bacteria, lime algae, cocoons, etc. can be identified as an artificial structure.

  The following structure for livelock according to the present invention is composed of a porous body and is provided with a biofixation layer for fixing a living organism.

  Conventionally, when producing live rocks artificially, it took a relatively long period of time for the organisms to settle. In this live block structure, the biofix layer is composed of a porous material. This makes it possible to produce live rocks rich in bacteria and lime algae in a relatively short period of time.

  The livelock structure according to the present invention is characterized by comprising a bio-fixation layer for fixing a living organism and an individual identification means capable of identifying itself.

  Conventionally, when producing a live rock artificially, it has been difficult to distinguish between an artificial live rock in which organisms have settled and a natural reef. Since this live block structure includes an individual identification means, the live block completed by the establishment of bacteria, lime algae, cocoons, etc. can be identified as an artificial structure.

The livelock production facility according to the next invention, floating on the sea, the floating structure to hold the live lock structure into the sea and, the floating construction to the live mount the locking structure livelock structural Body attachment means.

  This live block production facility is provided with a floating structure, and a live block structure in which a buoyancy generating means provided with a buoyancy generating means inside a biofixation layer for fixing a living organism is attached to the floating structure to produce a live block. As a result, the buoyancy generated by the buoyancy generating means of the live block structure can be used, so that the work for attaching to the floating structure and the case where the live block structure is pulled up to check the living state of the organism The burden can be reduced.

  The livelock production facility according to the next aspect of the present invention is characterized in that the livelock production facility includes daylighting / irradiation for collecting sunlight and leading it to the structure for livelock.

  Since this live block production facility has the configuration of the live block production facility, the same operation and effect as the live block production facility are exhibited. Furthermore, this live block production facility is provided with daylighting and irradiation, and irradiates sunlight to the live block structure located in the shadow area of the floating structure during the daytime. As a result, sunlight can be supplied to a living organism (for example, a cocoon) that is fixed on the live block structure and that requires photosynthesis. As a result, it is possible to suppress a decrease in productivity of the live block.

  The live block production facility according to the next aspect of the present invention is characterized in that, in the live block production facility, the floating structure includes a swing restraining means that projects toward the sea surface.

  Since this live block production facility has the configuration of the live block production facility, the same operation and effect as the live block production facility are exhibited. Furthermore, this live block production facility is provided with a shaking restraining means protruding toward the sea surface. As a result, it is possible to reduce the swaying of the structure for the live block attached to the floating structure, and thus it is possible to suppress a decrease in the productivity of the live block.

  The livelock production facility according to the next aspect of the present invention is characterized in that the livelock production facility further includes an underwater floating body protection means for protecting the livelock structure from the floating material floating in the sea.

  Since this live block production facility has the configuration of the live block production facility, the same operation and effect as the live block production facility are exhibited. Furthermore, this live block production facility is provided with a means of protecting the suspended matter in the sea. As a result, the live block structure being cured can be protected from the suspended matter in the sea, so that damage to the live block structure can be suppressed, and a decrease in productivity of the live block can be suppressed.

  The live block production facility according to the next aspect of the present invention is characterized in that the live block production facility includes water flow generating means for generating a flow of seawater in the vicinity of the floating structure.

  Since this live block production facility has the configuration of the live block production facility, the same operation and effect as the live block production facility are exhibited. Further, the live block production facility includes water flow generating means for generating a sea water flow in the vicinity of the floating structure. As a result, fresh seawater always exists around the floating structure to which the structure for the live block is attached, so that it is possible to suppress a decrease in the productivity of the live block.

  The live block production facility according to the present invention is characterized in that, in the live block production facility, a water passage through which seawater circulates is provided at the bottom of the floating structure.

  Since this live block production facility has the configuration of the live block production facility, the same operation and effect as the live block production facility are exhibited. Furthermore, this live block production facility includes a water passage through which seawater circulates at the bottom of the floating structure. As a result, fresh seawater always exists around the floating structure to which the structure for the live block is attached, so that it is possible to suppress a decrease in the productivity of the live block.

  The following method of installing a live block according to the present invention includes the steps of manufacturing the live block structure, the procedure of holding the live block structure in the sea for a predetermined period, and holding the live block structure in the sea for a predetermined period of time. And a procedure for reducing the buoyancy of the buoyancy generating means included in the live block structure at the installation location.

  In this live block installation method, a live block produced using a live block structure provided with a buoyancy generating means inside a bio-fixation layer for fixing a living organism is installed at an installation location. Thereby, since the buoyancy generated by the buoyancy generating means can be used, it is possible to reduce the load when moving the live block to the installation location. Further, by reducing the buoyancy of the buoyancy generating means, the live block sinks to the installation location, so that the live block can be easily installed at a predetermined installation location.

  The live block structure, live block production facility, and live block installation method according to the present invention can facilitate handling when producing live blocks artificially.

  Hereinafter, the present invention will be described in detail with reference to the drawings. The present invention is not limited by the best mode for carrying out the invention (hereinafter referred to as an embodiment). In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same. The present invention is not limited to the production of live rocks used for water purification or live rocks used for environmental recovery, as well as the use of the live rocks for transplanting straws to cultivate straws. Applicable.

(Embodiment 1)
The live block according to this embodiment is characterized by the following points. That is, a hollow portion is formed inside the biofix layer composed of a porous body, and buoyancy generating means is provided in the hollow portion. And it is made to age for a predetermined period in an aquaculture area, and a living thing is made to adhere to the part constituted by the porous of a living fixation layer. Thereafter, the buoyancy of the buoyancy generating means is reduced during the installation by moving to the installation location.

  FIG. 1 is a cross-sectional view illustrating a configuration of a live block structure according to the first embodiment. FIG. 2 is an explanatory diagram illustrating a state where a live block produced using the live block structure according to the first embodiment is installed on the seabed. In FIG. 2, the live block is shown in a sectional view. The live block structure 1 according to this embodiment includes a biofix layer 2 formed of a porous body and a hollow container 3 serving as a buoyancy generating means provided therein.

  The bio-fixation layer 2 constituting the live block structure 1 is a part to which bacteria that decompose nitrogen compounds and the like, lime algae, cocoons and the like are fixed. In the live block structure 1 according to this embodiment, the biofix layer 2 is made of a porous material such as foamed cement. Thereby, the water permeability of the biofix layer 2 is improved, and the fixation of bacteria, lime algae and the like is promoted. Moreover, since the surface area can be increased by the porous body, the amount of fixed bacteria and lime algae increases. This makes it possible to produce live rocks rich in bacteria and lime algae in a relatively short period of time. As the material of the biofix layer 2, in addition to the above-described foamed cement, concrete or mortar having fine bubbles, or a calcareous hardened material can be used. Further, particles having fine pores may be hardened with gypsum, white cement or the like.

  In addition, the case where the biofixation layer 2 is not comprised with a porous body is not excluded. In such a case, the period until colonization of bacteria, lime algae, etc. is longer than when the biofix layer 2 is composed of a porous body. If this is acceptable, the biofix layer 2 is composed of a porous body. Not necessary. As a result, the biofixation layer 2 can be easily manufactured, so that the manufacturing cost of the live block structure 1 can be reduced.

An IC (Integrated Circuit) tag 7 is attached to the live block structure 1 as an individual identification means capable of identifying itself. The IC tag 7 is attached to the live block structure 1 after being sealed in a waterproof case or having a waterproof seal to provide a waterproof measure. When the live block structure 1 is cured in the aquaculture area and bacteria, lime algae, coral C, etc. are established as shown in FIG. 2, there is a possibility that it cannot be distinguished from a natural reef. Therefore, the live block 1L completed by the establishment of bacteria, lime algae, cocoons C and the like by the IC tag 7 is identified as an artificial structure. Further, the attributes of the live block structure 1 (such as the type of cocoon C to be fixed, the start time of the curing, the information on the curing sea area, etc.) can be stored in the IC tag 7. This facilitates management of a large number of live block structures 1.
It can also be used to recycle live rocks that are no longer needed after removing the water tank.

  A hollow portion 2R is formed inside the biofix layer 2. And the hollow container 3 which is a buoyancy generating means is attached to the hollow part 2R. The hollow container 3 is combined and integrated with the biofix layer 2. Here, “integration” means that the biofix layer 2 and the hollow container 3 cannot be separated without destroying the biofix layer 2.

  The hollow container 3 has a sealed structure by attaching the plug 6 to the communication holes 4 and 5 and generates buoyancy in water. The hollow container 3 is made of, for example, iron or FRP (Fiber Reinforced Plastic). In this embodiment, the hollow container 3 is provided with a communication hole 5 in a portion corresponding to the bottom B of the lyblock structure 1, and seawater is contained in the hollow container 3 when the lylock 1L described later is installed. It is easy to flow into 3R. Since the live block structure 1 includes the hollow container 3 inside the biofixation layer 2, there is an advantage that the biofixation layer 2 can be reinforced by the hollow container 3.

  Before installing the live block structure 1 at the installation location, the stopper 6 is attached to the communication holes 4 and 5 so that the hollow container 3 has a sealed structure, and buoyancy is generated in water. In this case, a predetermined amount of water may be injected into the hollow container 3 for buoyancy adjustment. When the live block structure 1 is completed as the live block 1L (FIG. 2) and then installed at the installation location, the hollow vessel 3 is towed to the installation location while generating buoyancy. And the seawater W flows in into the hollow container 3 from the communicating holes 4 and 5 by removing the stopper 6 at the time of installation, and the hollow container 3 is filled with the seawater W. As a result, the buoyancy of the hollow container 3 is lost, and the live block 1L including the hollow container 3 is set down on the sea floor L of the installation place.

  The live block structure 1 includes a hollow container 3 that is a buoyancy generating means, and generates buoyancy in the hollow container 3 during towing to the aquaculture area, during curing, or towing to the installation site. . As a result, the seawater bears a part of the weight of the livelock structure 1 and the livelock 1L to which bacteria, cocoons C, etc. are fixed. As a result, it is possible to reduce the load when towing the live block structure 1 and the live block 1L to which bacteria or the like are fixed. Further, when the live block structure 1 is cured in the aquaculture area, the force for supporting the live block structure 1 can also be reduced. Therefore, the support structure of the live block structure 1 can be provided in a facility for curing the live block. It is possible to simplify or suppress a decrease in durability of the facility. The structure which concerns on this embodiment is so preferable that the dimension and mass of the structure 1 for live blocks and the live block 1L become large.

(Modification 1)
FIG. 3 is a cross-sectional view showing a live block structure according to a first modification of the first embodiment. FIG. 4 is a plan view showing a state of the live block structure shown in FIG. 3 as viewed from the bottom side. FIG. 5 is an explanatory diagram illustrating a state when a lye block produced using the lye block structure according to the first modification of the first embodiment is installed on the seabed. The live block structure 1a according to this modification is substantially the same as the live block structure 1, but a removable buoyancy body 8 is attached to the inside of the biofixation layer 2a instead of the hollow container 3. Is different. Other configurations are the same as those of the first embodiment.

  A hollow portion 2Ra is formed inside the biofix layer 2a. And the buoyancy body 8 which is a buoyancy generating means is attached to the hollow part 2aR. As the buoyant body 8, for example, polystyrene foam, urethane foam, glass or resin beads having pores, or the like can be used. The biofixation layer 2a is provided with a communication hole 4a. When the live block 1La is installed, air in the hollow part 2aR of the biofixation layer 2a escapes from the communication hole 4a, so that the seam in the hollow part 2aR Is easy to flow in.

  When the live block structure 1a is completed as the live block 1La (FIG. 5) and then installed at the installation location, the buoyancy body 8 is attached to the installation location while being towed. And the seawater W flows into the hollow part 2Ra of the biofixation layer 2a from the communicating hole 4a by removing the buoyancy body 8 from the biofixation layer 2a of the live block 1La at the time of installation. As a result, the buoyancy of the live block 1La is lost, and the live block 1La is set down on the seabed L of the installation site. Note that the buoyancy body 8 may have a split structure in consideration of removal during installation.

  FIG. 6 is an explanatory view showing another usage mode of a lye block produced using the lye block structure according to the first modification of the first embodiment. The live block 1La is provided with a communication hole 4a having a size that allows a shellfish such as shrimp and coral and small fish to pass through the live block 1La. As a result, shellfish such as shrimp and coral, small fishes, etc. are guided inside the live block 1La and used as fishing reefs.

  In the live block structure 1a according to this modified example (see FIG. 3), the buoyancy body 8 is removed at the time of installation. Therefore, the porous body is also in direct contact with seawater inside the live block 1La after the installation. As a result, when a certain period of time elapses after installation, lime algae and the like are also settled inside the live block 1La, and shellfish and small fish are likely to gather, so that the function as a fishing reef is easily exhibited.

(Second modification)
FIG. 7 is a cross-sectional view illustrating a configuration of a live block structure according to a second modification of the first embodiment. FIG. 8 is a plan view showing a state of the live block structure shown in FIG. 7 as viewed from the bottom side. FIG. 9 is a cross-sectional view illustrating another configuration of the live block structure according to the second modification of the first embodiment. The live block structure 1b according to this modification is substantially the same as that of the first embodiment except that a plurality of hollow portions of the biofix layer are provided. Other configurations are the same as those of the first embodiment.

  A plurality of hollow portions 2Rb (two in this example) are formed inside the biofix layer 2b. And each hollow part 2Rb is attached with a hollow container 3b which is a buoyancy generating means. That is, the live block structure 1b includes two hollow containers 3b. As a result, as shown in FIGS. 7 and 8, a partition wall 2b_r is formed between the two hollow containers 3b in the biofix layer 2b. Since the partition walls 2b_r function as ribs that reinforce the biofix layer 2b, the strength of the biofix layer 2b is improved.

  Here, when a buoyant body such as polystyrene foam (see FIG. 3) is used as a buoyancy generating means in place of the hollow container, the buoyant body is removed after installation, so that it is disadvantageous in terms of strength compared to using a hollow container. . Even when a buoyancy body is used as the buoyancy generating means, the configuration according to this modification can be applied. In that case, the strength of the biofixation layer 2b is formed by the partition walls of the biofixation layer 2b formed between the plurality of buoyancy bodies. As a result, the disadvantage of strength can be improved.

  The live block structure 1b according to this modification includes a plurality of hollow containers 3b (buoyancy generating means). For example, when a hole is opened in one hollow container 3b and the function as the buoyancy generating means is lost. However, buoyancy can be generated by the hollow container 3b that has not lost buoyancy. As a result, the reliability can be improved.

The number of hollow containers 3b as buoyancy generating means is not limited to two, and the arrangement is arranged in a direction parallel to the surface of the bottom B of the live block structure 1b (see FIG. 7). Is not limited to). For example, as in a live block structure 1c shown in FIG. 9, three hollow containers (buoyancy generating means) 3c _{1 to} 3c ₃ are arranged in a direction orthogonal to the surface of the bottom B of the live block structure 1c. Also good.

In addition, as a live locking structure 1c shown in FIG. 9 may be different from each volume of the hollow container 3c ₁ ~3c _3. For example, in this live block structure 1c, the volume of the hollow container is increased as the distance from the bottom B increases. As a result, the mass of the bottom B is increased, so that when the live block is installed, the bottom B sinks while maintaining a state facing the seabed at the installation location. This makes it easy for the bottom B to settle to the seabed, so that it is possible to reduce the possibility that the biofixation layer 2c on which lime algae, corals and the like have settled will land on the seabed.

  As described above, the live block structure according to this embodiment and the modified example thereof is provided with the buoyancy generating means in the biofixation layer for fixing the living organisms, and this is used to produce the livelock. This makes it possible to use the buoyancy of the buoyancy generating means, so that it is easy to handle when moving to the place where the live block is installed. Further, when installing the lylock, the buoyancy of the buoyancy generating means only has to be reduced, so that the layblock is easily installed. In addition, what is equipped with the structure of this embodiment and its modification has the effect | action and effect similar to this embodiment and its modification. The configuration of this embodiment and its modification examples can also be applied to the following embodiments.

(Embodiment 2)
In the second embodiment, a live block production facility and a live block production method for producing a live block using the live block structure according to the embodiment and the modification thereof will be described.

  FIG. 10 is a plan view showing a live block production facility according to the second embodiment. 11 and 12 are side views showing a live block production facility according to the second embodiment. In this live block production facility 100, the floating structure 20 to which the live block structure 1 (see FIG. 1 or the like) described in the first embodiment is attached is turned into a sea area (cured sea area) S suitable for live block curing. Float. As a result, bacteria, lime algae, cocoons and the like are fixed on the biofix layer 2 of the live block structure 1.

  In the live block production facility 100 according to this embodiment, the floating body structure 20 is configured by combining a plurality of buoyancy bodies. The method of forming the floating body structure 20 and the shape of the floating body structure 20 are disclosed in FIG. It is not limited to what was done. As the buoyancy body constituting the floating structure 20, for example, a hollow structure in which a plurality of metal plates are joined by welding or the like can be used. The floating structure 20 may be moored in a predetermined sea area by an anchor, or may be moored on land.

  The live block structure 1 is attached to the floating structure 20 by live block attachment means and immersed in a predetermined sea area. For convenience of explanation, the live block production facility 100 according to this embodiment includes two types of live block mounting means, but in actuality, one of the two types of live block mounting means is used.

  As the live block attachment means, for example, the live block structure 1 can be anchored to the floating structure 20 using a mooring cable 24 as shown in FIG. For example, a rope or a wire with high corrosion resistance is used for the mooring line 24. Moreover, you may use the live block support tool 21 as shown, for example in FIG. 1 as a live block attachment means. The live block support 21 includes a plate-shaped live block mounting portion 23 and a shaft 22 that connects the live block mounting portion 23 and the floating structure 20. Next, a modified example of the live block production facility 100 according to the second embodiment will be described.

  13-18 is explanatory drawing which shows the modification of the live block production facility based on Embodiment 2. FIG. The live block production facility 100a shown in FIG. 13 uses the daylighting / irradiation device 30 for daylighting / irradiation to send the sun 40 to the live block structure 1 located in the region D that is a shadow of the floating structure 20 during the daytime. Light (hereinafter referred to as sunlight) 41 is irradiated. Here, in the daytime, a region D which is a shadow of the floating structure 20 is a region where the sunlight 41 is blocked by the floating structure 20, and is a region on the opposite side of the sun 40 from the floating structure 20. Among these, it is a region surrounded by the one-dot chain line in FIG. 13 and the floating structure 20.

  The daylighting / irradiation device 30 includes a daylighting unit 31 and a sunlight irradiation unit 32. The daylighting unit 31 moves following the sun 40 and can always face the sun 40 and daylight 41 during the daytime. The sunlight 41 collected by the daylighting unit 31 irradiates the sunlight 41 from the sunlight irradiation unit 32 to the shadowed portion of the floating structure 20. The sunlight irradiation part 32 is comprised using an optical fiber, for example. With such a configuration, it is possible to irradiate sunlight 41 to the live block structure 1 located in the region D that is a shadow of the floating structure 20 during the daytime, so that the live block is fixed to the live block structure 1. Sunlight 41 can be supplied to living organisms that require photosynthesis (for example, cocoons). As a result, it is possible to suppress a decrease in productivity of the live block.

  The live block production facility 100b shown in FIG. 14 projects the fins 25, which are swing suppressing means, from the floating structure 20 toward the sea surface S. As a result, it is possible to suppress the swinging of the floating structure 20 due to the pulling wave or the like of the ship navigating near the live rock production facility 100b. As a result, since the fluctuation of the live block structure 1 attached to the floating structure 20 can be reduced, a decrease in the productivity of the live block can be suppressed.

  The live block production facility 100 c shown in FIG. 15 includes an underwater floating body protection means 26 around the live block structure 1 attached to the floating structure 20. When floating matter (floating underwater) 45 floating in the sea collides with the live block structure 1 being cured, living organisms settled on the live block structure 1 may drop off or the live block structure 1 may be damaged. To do. For this reason, this live block production facility 100 c is provided with the underwater floating body protection means 26 around the live block structure 1 to protect the live block structure 1 under curing from the underwater floating body 45.

  In the live block production facility 100c, for example, a net is used as the underwater suspended matter protection means 26. Since the underwater floating body protection means 26 is preferably arranged at some distance from the live block structure 1, the support means of the underwater floating body protection means 26 protrudes from the floating body structure 20, and this is underwater. 26 is attached.

  In this live block production facility 100c, the floating substance protection means 26 is attached to the fin 25 which is the shaking restraining means provided in the above-mentioned live rock production facility 100b (see FIG. 14). Thus, the floating structure 20 is restrained from shaking and the underwater floating body protection means 26 is supported, but the underwater floating body protection means 26 is not limited to this method.

  This live block production facility 100 c includes an underwater floating body protection means 26 around the live block structure 1 attached to the floating structure 20. As a result, the living block structure 1 being cured can be protected from the suspended matter 45 in the sea, so that the living organisms that have settled on the living block structure 1 are prevented from dropping off and the living block structure 1 is prevented from being damaged. Therefore, it is possible to suppress the productivity decline of the live rock.

  A live block production facility 100 d shown in FIG. 16 includes a water flow generating means 28 in the floating structure 20. The periphery of the floating structure 20 provided in the live block production facility 100c, particularly the inner side surrounded by the multiple floating structure 20, is likely to cause seawater stagnation, which may affect the productivity of the live block. In this live block production facility 100c, by providing the floating structure 20 with the water flow generating means 28 for generating a sea water flow, the replacement of sea water around the floating structure 20 is promoted, and the structure for the live block 1 is provided. Fresh seawater always exists around the floating structure 20 to be attached. Thereby, it is possible to suppress a decrease in productivity of the live block.

  A live block production facility 100 e shown in FIGS. 17 and 18 includes a water passage 27 in the floating structure 20. As described above, the periphery of the floating structure 20 included in the live block production facility 100e, particularly the inner side surrounded by the multiple floating structures 20, is likely to cause seawater stagnation, which may affect the productivity of the live block. . This live block production facility 100e is provided with a water passage 27 at the bottom of the floating structure 20 (that is, on the direction of gravity), so that seawater moves in the direction of the arrow in FIG. The exchange of seawater is promoted between the inner area and the outer area. As a result, fresh seawater always exists around the floating structure 20 to which the structure 1 for livelock is attached, so that it is possible to suppress a decrease in productivity of the livelock.

  Here, the structure of the live block production facilities 100a to 100e described above can be used alone or in combination of two or more. Next, a procedure for producing a live block using the live block structure according to the first embodiment and the live block production facility according to the second embodiment and installing the live block at the installation location will be described.

  FIG. 19 is a flowchart showing a production and installation procedure of a live rock. In producing a live block, first, the live block structure 1 (see FIG. 1) or the live block structure 1a (see FIG. 3) described in the first embodiment and the modifications thereof is manufactured (step S101). In the live block structure 1 shown in FIG. 1, for example, foamed cement is applied to the hollow container 3 and solidified. In the live block structure 1a shown in FIG. 3, a space for attaching the buoyant body 8 is made to create the biofixation layer 2a, and the buoyancy body 8 is attached thereto.

  When the live block structure 1 or the like is manufactured, the live block structure 1 or the like is installed in the live block production facility 100 or the like described in the second embodiment (step S102), and is cured for a predetermined period (step S103). As a result, organisms such as bacteria and lime algae are fixed on the live block structure 1 and the like. When the predetermined period has elapsed, sufficient living creatures are fixed on the live block structure 1 and the like, and the live block 1L (see FIG. 2) is completed (step S104).

  The completed live block 1L is towed to the place where it is installed (step S105). After moving to the place where the live block 1L is installed, the buoyancy of the buoyancy generating means provided in the live block 1L is reduced, and the live block 1L is allowed to settle to the installation place. In order to reduce the buoyancy of the buoyancy generating means, for example, seawater is introduced into the hollow container 3 (see FIG. 1) or the buoyancy body 8 (see FIG. 3) is removed. Accordingly, the live block 1L is installed at a predetermined installation location (step S106).

  As described above, in this embodiment and the modification thereof, the live block structure is produced by attaching the live block structure provided with the buoyancy generating means inside the biofix layer for fixing the living organism to the floating structure. As a result, the buoyancy generated by the buoyancy generating means of the live block structure can be used, so that the work for attaching to the floating structure and the case where the live block structure is pulled up to check the living state of the organism The burden can be reduced. In addition, since the buoyancy generating means of the live block structure generates buoyancy, the load imposed on the floating structure can be reduced. As a result, it becomes possible to cure more live blocks.

  Furthermore, when the seawater temperature rises abnormally by using the floating structure, the live block structure being cured together with the floating structure can be moved to a sea area with an appropriate water temperature. In addition, during a storm due to a typhoon or the like, the live block structure being cured can be moved into the port together with the floating structure, so that damage to the live block structure being cured can be minimized. Since the buoyancy generating means of the live block structure generates buoyancy, the load when moving the live block structure together with the floating structure can be reduced. In addition, what is equipped with the structure of this embodiment and its modification has the effect | action and effect similar to this embodiment and its modification.

  As described above, the live block structure, live block production facility, and live block installation method according to the present invention are useful for artificially producing live blocks, and particularly live having large dimensions and masses. Suitable for producing locks.

3 is a cross-sectional view illustrating a configuration of a live block structure according to Embodiment 1. FIG. It is explanatory drawing which shows the state which installed the live block produced using the live block structure which concerns on Embodiment 1 in the seabed. FIG. 6 is a cross-sectional view showing a live block structure according to a first modification of the first embodiment. It is a top view which shows the state which looked at the structure for live block shown in FIG. 3 from the bottom part side. It is explanatory drawing which shows a state when installing the live block produced using the structure for live block which concerns on the 1st modification of Embodiment 1 on the seabed. It is explanatory drawing which shows the other usage condition of the live block produced using the structure for live block which concerns on the 1st modification of Embodiment 1. FIG. FIG. 6 is a cross-sectional view illustrating a configuration of a live block structure according to a second modification of the first embodiment. It is a top view which shows the state which looked at the structure for live block shown in FIG. 7 from the bottom part side. FIG. 10 is a cross-sectional view showing another configuration of the live block structure according to the second modification of the first embodiment. It is a top view which shows the live block production facility based on Embodiment 2. FIG. It is a side view which shows the live block production facility based on Embodiment 2. FIG. It is a side view which shows the live block production facility based on Embodiment 2. FIG. It is explanatory drawing which shows the modification of the live block production facility based on Embodiment 2. FIG. It is explanatory drawing which shows the modification of the live block production facility based on Embodiment 2. FIG. It is explanatory drawing which shows the modification of the live block production facility based on Embodiment 2. FIG. It is explanatory drawing which shows the modification of the live block production facility based on Embodiment 2. FIG. It is explanatory drawing which shows the modification of the live block production facility based on Embodiment 2. FIG. It is explanatory drawing which shows the modification of the live block production facility based on Embodiment 2. FIG. It is explanatory drawing which shows the modification of the live block production facility based on Embodiment 2. FIG. It is a flowchart which shows the production and installation procedure of a live block.

Explanation of symbols

1, 1a, 1b, 1c Structure for live block 1L, 1La Live block 2b_r Bulkhead 2, 2a, 2b Biofixation layer 2R, 2Ra, 2Rb Hollow part 3, 3b, 3c ₁ 3c ₂ Hollow container 4, 4a Communication hole 5 Communication hole 7 IC tag 8 Buoyant body 20 Floating structure 21 Live block support 24 Mooring line 25 Fin 26 Underwater suspended matter protection means 27 Water passage 28 Water flow generation means 30 Daylighting / irradiation device 100, 100a, 100b, 100c, 100d, 100e live block production facility

Claims (12)

A bio-fixation layer that fixes the organism;
A buoyancy generating means provided inside the biofix layer;
Including
The buoyancy generating means is a hollow container having a communication passage communicating with the outside of the biofixation layer, and the hollow container and the biofixation layer are combined to be integrated or removable from the biofixation layer. A structure for live rock characterized by A bio-fixation layer that fixes the organism;
A hollow portion provided inside the biofix layer;
A buoyancy generating means provided in the hollow portion inside the biofix layer and detachable from the biofix layer;
Provided on the organism fixing layer, and the communication hole that passes communication between the outside of the biological fixation layer and the hollow portion,
A structure for a live block characterized by comprising:   The live block structure according to claim 1 or 2, wherein a plurality of the buoyancy generating means are provided inside the biofix layer.   The structure for livelock according to any one of claims 1 to 3, wherein the biofix layer is a porous body.   The live block structure according to any one of claims 1 to 4, wherein the live block structure includes an individual identification unit capable of identifying itself. A floating structure that floats on the sea and holds the live block structure according to any one of claims 1 to 5 in the sea;
Live block structure mounting means for mounting the live block structure to the floating structure;
Live rock production facility characterized by including.   The live block production facility according to claim 6, further comprising daylighting / irradiation for collecting sunlight and guiding it to the live block structure. The floating structure is
The live block production facility according to claim 6 or 7, further comprising a swing restraining means projecting toward the sea surface.   The live block production facility according to any one of claims 6 to 8, further comprising an underwater floating body protection means for protecting the live block structure from floating bodies floating in the sea.   The live block production facility according to any one of claims 6 to 9, further comprising water flow generation means for generating a water flow of seawater in the vicinity of the floating structure.   The live block production facility according to any one of claims 6 to 10, wherein a water passage through which seawater flows is provided at a bottom of the floating structure. A procedure for producing a live block structure comprising: a biofix layer for fixing a living organism; and a buoyancy generating means provided inside the biofix layer;
A procedure for holding the live block structure in the sea for a predetermined period;
A procedure for moving the live block structure after being held in the sea for a predetermined period to the installation location;
A procedure for reducing the buoyancy of the buoyancy generating means included in the live block structure at the installation location;
The installation method of the live block characterized by including.

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