JP6008601B2 - Vertical alga reef - Google Patents

Description

  The present invention relates to a vertical alga reef suitable for algae growth.

  Algae reefs that propagate algae have already been installed on the seabed for the purpose of regenerating the declined algae ground. Conventional algae reefs are composed of flat or rectangular concrete blocks. However, in the algae reef with such a structure, the surface on which the algae can grow is simply a flat surface, so that the substantial growth area of the algae per unit area of the algae basin is relatively small. There is a disadvantage that many can not hope.

  As what can improve such a shortcoming, in patent documents 1 etc., as shown in Drawing 8, it is a plurality of concrete made of a cylinder, a prism, etc. on a flat concrete floor board (base) 51 as shown in FIG. A so-called vertical alga reef 50 in which a columnar body 52 is vertically erected is disclosed. In Patent Document 1, the seaweed bed where the algal reef 50 is installed is referred to as an underwater forest.

  According to this vertical alga reef 50, a plurality of columnar bodies 52 capable of growing algae extend from a floor (base) 51 in the vertical direction (vertical direction), and the algal reef 50 is three-dimensional and forested. It is configured. Accordingly, it is possible to increase the substantial growth area of algae per unit area of the algae basin as compared with algae reef composed of simple rectangular or flat concrete blocks.

Japanese Patent Laid-Open No. 2000-4710

  However, in the algal reef 50 having a conventional configuration as shown in FIG. 8, a solid columnar body 52, that is, a columnar body 52 in which concrete is embedded to the inside is used. Therefore, naturally, the growth area of the algae is limited to the outer surface of the columnar body 52, and the algae cannot grow inside the columnar body 52. As a result, the substantial growth area of the algae is increased too much. You may not be able to. Further, when the columnar body 52 is thin, there is a risk of breakage.

  This invention solves the said subject, and it aims at providing the vertical type alga reef which can ensure the substantial growth area of the algae per unit area of a seaweed bed larger.

In order to solve the above-mentioned problems, the vertical algal reef of the present invention has a plurality of pipes arranged upright from the floor, and allows light and seawater to enter the pipe through the opening at the upper end of the pipe. The lower end of at least some of the plurality of tubes is arranged in a state of projecting downward from the floor board, and the tube has a receiving port formed at one end and an insertion port formed at the other end. The lower end portion of the pipe projecting downward from the floor board is disposed so as to be a receiving port . With this configuration, what is erected is a pipe, and light and seawater enter the inside of the pipe through the opening at the upper end of the pipe, so compared with the case where a columnar body clogged inside is erected, The substantial growth area of algae per unit area of the algae can be secured. In other words, the area where algae can grow is limited to the outer surface only in the columnar body that is clogged inside, whereas the tube can grow algae on the inner surface in addition to the outer surface, The substantial growth area of algae per unit area of the algae can be secured.
In addition, by arranging at least some of the lower ends of the plurality of pipes so as to protrude downward from the floor, even if the place where the vertical alga reef is installed has an uneven part such as a rocky place Can be installed relatively stably. That is, for example, the bottom end of the pipe is not protruded from the floor at all, and if the bottom surface of the floor is flat, installing a vertical alga reef in a place with uneven parts such as a rocky place, The floor board is placed on the top of the convex part and tilted greatly, resulting in an extremely unstable posture. On the other hand, according to the present configuration, the portion of the pipe that protrudes downward from the floor becomes a leg, and this protruding portion is installed in a concave portion (a portion having no convex portion) or a flat portion in the installation location. Thus, the vertical alga reef can be installed in a relatively stable state.
In addition, the pipe has a receiving port formed at one end and an insertion port formed at the other end, and is arranged so that the lower end of the pipe protruding downward from the floor serves as the receiving port. In many cases, the receiving port of the tube has a structure having a large diameter and good strength as compared with the insertion port, so that when the vertical algal reef is installed, the insertion port side is arranged to protrude downward. The vertical algal reef can be installed in a state having good strength as compared with the case where it is provided.

  Here, it is preferable to use a cast iron pipe as the pipe. Thus, one of the reasons for using a cast iron pipe as a pipe is that the iron ions suitable for the growth of algae are supplied from the cast iron pipe, so that the growth of algae is promoted. The second reason is that the cast iron pipe is manufactured by casting, so that the inner surface and the outer surface of the cast iron pipe are uneven, so that the surface area increases and the algae spores are easily caught and the algae germinate. The probability of doing so may increase. The third reason is that the pipe is made of cast iron and is strong, so it is difficult to break.

Moreover, you may form the hole which penetrates the inside and outside of a pipe | tube only in the vicinity of the upper surface of the floor in a pipe | tube. According to this configuration, the seawater that has flowed into the inside from the upper end opening of the pipe flows out along the upper surface of the floor board through the hole, and the deposit is not suitable for the growth of algae such as sand and mud on the upper surface of the floor board. Even when the water is accumulated, the deposits are washed away from the floor by seawater flowing out of the hole. As a result, the cleaned part on the upper surface of the floor board tends to be in a state suitable for algae growth, and the area where algae can grow increases. Moreover, by forming the hole portion, the seawater inside the pipe can easily flow, thereby promoting the growth of algae.

  In addition, a spawning rod-shaped body may be erected from the floor, and according to this configuration, it is possible to increase the possibility of squid and the like spawning with the spawning rod-shaped body. It can also be used as a fishing reef.

According to the present invention, the vertical alga reef is arranged with a plurality of pipes standing from the floor, and is configured to allow light and seawater to enter the pipe through the opening at the upper end of the pipe. By this, it is possible to secure a larger substantial growth area per unit area of the algae basin, and to grow more algae or to realize well as a fishery reef of seafood that feeds on these algae. .
In addition, by arranging the lower ends of multiple pipes so that they protrude downward from the floor, the surface on which the vertical algal reef is installed has a relatively stable surface even when there are uneven parts such as rocky places. Can be installed. Thereby, in particular, the vertical alga reef can be stably installed with a simple configuration without causing an increase in manufacturing cost due to the provision of separate parts and the like.

  In addition, by using a cast iron pipe as the pipe, iron ions, which are substrates suitable for algae growth, gradually dissolve from the cast iron pipe into the sea, so that algae growth can be promoted. In addition, since the cast iron pipe is manufactured by casting and the inner and outer surfaces of the cast iron pipe are uneven, the surface area is increased and the algae spores are easily caught and the probability of algae germination increases. There are advantages. Furthermore, since the pipe is made of cast iron and is strong, there is an advantage that it is difficult to break.

Also, by forming a hole that penetrates the inside and outside of the pipe only in the vicinity of the top surface of the floor board in the pipe, it is possible to wash mud and the like accumulated on the top surface of the floor board, The viable area of can be increased. Moreover, by forming the hole portion, the seawater inside the pipe can easily flow, thereby promoting the growth of algae.

  In addition, by laying a rod-shaped body for spawning from the floor, it is possible to increase the possibility that squid and the like will spawn with the rod-shaped body for spawning, and it can be used as a multifunctional reef.

1 is an overall front view of a vertical alga reef according to an embodiment of the present invention. It is a top view of the vertical alga reef. It is a principal part expanded sectional view of the vertical type alga reef. It is a whole front view of the vertical alga reef concerning other embodiments of the present invention. It is a principal part enlarged view of the vertical type alga reef of the modification concerning the embodiment. It is a whole front view of the vertical alga reef of the other modification concerning the embodiment. It is a top view of the vertical alga reef. It is a front view of the conventional vertical alga reef.

Hereinafter, a vertical alga reef according to an embodiment of the present invention will be described with reference to the drawings.
1 and 2 are an overall front view and a plan view of a vertical alga reef according to an embodiment of the present invention. As shown in these drawings, the vertical alga reef 1A is provided with a plurality of pipes 2 erected from a floor (base) 3. And it is comprised so that light and seawater can enter the inside of the pipe | tube 2 through the opening part 2k of the upper end of the pipe | tube 2. FIG. In addition, 4 in FIG. 1 is installation surfaces, such as a seabed part in which the said vertical alga reef 1A is installed.

  Here, in this embodiment, the pipe 2 (2A, 2B, 2C) is a ductile cast iron pipe, and a plurality of types (three types in this embodiment) of bores are used as intermediate portions in the longitudinal direction. Is cut into two so as to be orthogonal to the tube axis. Further, the floor board 3 is made of reinforced concrete, and has a rectangular shape in plan view (substantially square shape in plan view in this embodiment) and a rectangular shape with a constant thickness. And each pipe | tube 2 (2A, 2B, 2C) is arrange | positioned with the attitude | position standing so that it might extend vertically upwards from the floor board 3. As shown in FIG. In this embodiment, the lower end portion of the pipe 2 (2A, 2B, 2C) is buried in the floor board 3. In addition, although the cast iron pipe manufactured by the centrifugal casting method is used for the pipe | tube 2 (2A, 2B, 2C), it is not restricted to this. Further, the pipe 2 (2A, 2B, 2C) may be disposed so that the lower end surface of the pipe 2 (2A, 2B, 2C) is in the same position as the lower surface of the floor board 3 (so-called flush). You may arrange | position so that the opening part of the lower end surface of may face from the downward direction of the floor board 3. FIG.

  According to this configuration, what is erected is the pipe 2 (2A, 2B, 2C), and light and seawater enter the inside of the pipe 2 through the opening 2k at the upper end of the pipe 2, as shown in FIG. Compared with the case where the columnar body 52 whose inside is clogged is installed upright, the substantial growth area of the algae per unit area of the algae can be secured. That is, in the columnar body 52 in which the inside is clogged, the region where algae can grow is limited only to the outer surface. On the other hand, as shown in FIG. 3, the tube 2 (2A, 2B, 2C) Since the algae M can grow on the inner surface in addition to the outer surface, a substantial growth area of the algae per unit area of the algae can be secured. As a result, it is possible to grow more algae or to realize well as fishing reefs of seafood that feeds on these algae.

  Moreover, since a cast iron pipe is used as the pipe 2 (2A, 2B, 2C), when this vertical algal reef 1A is installed on the seabed, iron ions, which are substrates suitable for algae growth, are generated from the cast iron pipe in the sea. It gradually dissolves in the algae ground, and the growth of algae is promoted. Moreover, by using what was manufactured with the centrifugal casting method as a cast iron pipe, more algae can be grown further favorably.

  Generally, in the centrifugal casting method, the molten iron poured into the inner surface of a mold rotating at high speed is solidified under the action of centrifugal force. Part) occurs on the inner surface of the cast iron pipe. When used as a water pipe, etc., these parts are usually removed by a predetermined process in the factory. However, in order to apply a cast iron pipe to the product of the present invention, these parts are intentionally left. Is also effective. On the other hand, the inner surface of the mold is treated in advance (peening treatment) into a regular uneven shape for the purpose of preventing casting defects, or a coating layer having fine voids is formed. As a result, the outer surface (mold side) of the cast iron pipe cast using such a mold has a large and small uneven shape.

  That is, since the cast iron pipe is manufactured by the centrifugal casting method, both the inner and outer surfaces of the cast iron pipe are formed with irregularities on the surface, so that the surface area increases and the algae spores are easily caught and the algae germinate. The probability increases, and even during the growth, the algae hardly separate from the inner surface of the cast iron pipe, and more algae can be grown well. In addition, since a cast iron pipe is used, there is an advantage that it is stronger than a concrete columnar body and is difficult to break even when a pipe having a small diameter is used.

  In addition, by using various types of tubes 2 (2A, 2B, 2C), various sizes of spaces can be provided, and an algae bed suitable for the habitat space of fry can be provided. Although FIG. 1 shows the case where the height of the pipe 2 (2A, 2B, 2C) is two types, the pipe 2 (2A, 2B, 2C) is arranged so that the height is three or more different. Or, it may be arranged so that there are four or more types of tube thickness.

FIG. 4 is an overall front view of a vertical alga reef according to another embodiment of the present invention.
As shown in FIG. 4, in the vertical algal reef 1B according to this embodiment, a state in which the lower ends of some of the plurality of tubes 2 (2A, 2B, 2C) protrude downward from the floor board 3 It is arranged with. In this embodiment, the pipe 2 (2A, 2B, 2C) disposed in a state of projecting downward from the floor 3 has a lower end projecting dimension from the floor 3 below. The dimensions are the same.

  Also in this embodiment including the above-described embodiment shown in FIGS. 1 to 3, the tube 2 (2A, 2B, 2C) is formed with a receiving port 2u at one end and inserted into the other end. In this embodiment, the pipe 2 (2A, 2B, 2C) arranged in a state of projecting downward from the floor board 3 is used. The lower end of the pipe 2 (2A, 2B, 2C) protruding downward from the floor board 3 is disposed as a receiving port.

  With this configuration, even when the installation surface 4 on which the vertical alga reef 1B is installed has uneven portions such as a rocky place as shown in FIG. 4, the vertical alga reef 1B can be installed relatively stably. Can do. That is, as shown in FIG. 1, when the lower end of the pipe 2 (2A, 2B, 2C) does not protrude from the floor 3 at all, and the lower surface of the floor 3 is flat, When the vertical alga reef is installed on the installation surface 4 having the uneven portion, the floor board 3 is placed on the top of the convex portion 5 and is tilted greatly. On the other hand, according to the present configuration, the projecting portion 2t projecting downward from the floor 3 in the pipe 2 (2A, 2B, 2C) serves as a leg portion, and the projecting portion 2t is formed into a recess (projection) on the installation surface 4. The vertical alga reef 1B can be installed in a relatively stable state by being installed on a flat portion or a portion having no part.

  Further, by changing the projecting dimension of the pipe 2 (2A, 2B, 2C) from the lower surface of the floor 3, it is possible to easily cope with the degree of unevenness of the uneven part such as a rocky place. In addition, since it is not necessary to provide a separate leg for the floor board 3, the vertical alga reef 1B can be stably installed with a simple configuration without causing an increase in manufacturing cost due to the provision of separate parts. There is also an advantage that can be done. In addition, when the vertical alga reef 1B is arranged on an inclined installation surface, a comparison is made by changing the protruding dimension of the lower end of the pipe 2 (2A, 2B, 2C) in accordance with the inclination degree. There is also an advantage that the floor board 3 can be installed almost horizontally.

  Moreover, according to the said structure, since it has arrange | positioned so that the lower end part of the pipe | tube 2 (2A, 2B, 2C) which protrudes below from the floor board 3 may become the receiving port 2u, in the state which has favorable intensity | strength. The vertical alga reef 1B can be installed. That is, since the receiving port 2u of the tube 2 has a structure having a large diameter and good strength as compared with the insertion port 2s, the insertion side is downward when the vertical algal reef 1B is installed. Compared with the case where it arrange | positions so that it may protrude, the said vertical alga reef can be installed in the state which has favorable intensity | strength, and reliability improves.

  Further, as shown in FIG. 5, the inside of the pipe (2A, 2B, 2C) is exposed to the vicinity of the upper surface of the floor 3 in the pipe 2 (2A, 2B, 2C) (immediately above the upper surface of the floor 3). A hole 2h that penetrates the outside and the outside may be formed.

  According to this configuration, seawater W that has flowed into the inside from the opening 2k at the upper end of the pipe flows out along the upper surface of the floor 3 through the hole 2h, and algae such as sand and mud grow on the upper surface of the floor 3 Even if the deposit T that is not suitable is accumulated, the deposit T is washed out by being washed outside from the floor 3 by the seawater W flowing out from the hole 2h. As a result, the deposit T is removed, the cleaned portion of the upper surface of the floor 3 is in a state suitable for the growth of algae, and the area where the algae can grow increases. Further, by forming the hole 2h in the pipe 2 (2A, 2B, 2C), the seawater W inside the pipe (2A, 2B, 2C) can easily flow up and down, thereby further promoting the growth of algae. Is done.

  Furthermore, as shown in FIGS. 6 and 7, a large number of egg-laying rods 6 may be erected so as to extend upward from the floor 3. The rod-shaped body 6 for laying eggs is composed of, for example, a reinforcing bar. By comprising in this way, since the possibility that a squid (for example, squid) lays eggs with the rod-like body 3 for egg-laying can be raised, it can utilize very well also as a multifunctional reef.

1A, 1B Vertical alga reef 2, 2A-2C Pipe 2h Hole 2k Opening 2s Insert 2t Protrusion 2u Receiving 3 Floor (base)
4 Installation surface 5 Convex 6 Bar-shaped body W Seawater

Claims (4)

A plurality of pipes are installed upright from the floor, and are configured to allow light and seawater to enter the pipes through the opening at the top of the pipes .
Arrange the lower end of at least some of the plurality of tubes in a state of projecting downward from the floor,
The tube has a receiving port at one end and an insertion port at the other end,
A vertical alga reef characterized by being arranged so that a lower end portion of a pipe projecting downward from a floor is a receiving port.   The vertical alga reef according to claim 1, wherein the pipe is a cast iron pipe. A plurality of pipes are installed upright from the floor, and are configured to allow light and seawater to enter the pipes through the opening at the top of the pipes.
A vertical algae reef characterized in that a hole for penetrating the inside and outside of the pipe is formed only in the vicinity of the upper surface of the floor in the pipe. The vertical alga reef according to any one of claims 1 to 3 , wherein a rod-shaped body for laying eggs is erected from a floor.

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