JPS6326203B2 - - Google Patents

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention relates to a concrete block connected body used for wave dissipation or for cultivating fish and shellfish, and an abalone aquaculture reef for cultivating abalone using the same. Regarding.

``Conventional technology and its problems'' Traditionally, abalone culture reefs were constructed by arranging a large number of wave-dissipating blocks on a flat bedrock on a relatively shallow coast, and placing stones with a diameter of 30 cm or more in a 70-cm diameter row inside the blocks. The most common method was to lay it out in thick layers. However, this has the disadvantage that it is extremely time-consuming to install, requires a large number of blocks, and is expensive.

On the other hand, as shown in Fig. 5, a concrete block 3 is used as a breeding block for young abalones, in which plate-shaped convex portions 1 that stand upright on the upper surface of a rectangular parallelepiped and deep concave portions 2 that serve as spaces for the abalone to inhabit are alternately provided. was used. Note that a mesh pipe 4 made of synthetic resin for curing kelp etc. may be planted on the upper end surface of the convex portion 1. This concrete block 3 has a very large formwork area compared to the amount of concrete and is difficult to manufacture, so it cannot be mass produced.
It also had the disadvantage of being relatively expensive.

In addition, both this concrete block 3 and the above-mentioned wave-dissipating block have a small or flat ground contact area at the bottom, so when installed on the bedrock of the seabed, the bedrock has considerable unevenness. However, when external forces such as waves are applied to these blocks, the blocks are easily shaken. In particular, in the case of the concrete block 3, the rigidity is too strong and there is no flexibility, so that the ground contact part is lopsided and unstable. Furthermore, the block is susceptible to large wave forces in the direction in which the unevenness is arranged, and the bottom surface of the block is susceptible to uplift force. This caused it to sway, slide, or even topple over even under considerable weight.

However, abalones have a habit of never inhabiting shaking rocks or blocks, no matter how large they are. In addition, abalone spends its growth period in relatively shallow, clean seawater at a depth of around 1.5 meters. Therefore, they prefer places where the waves are relatively rough and can be easily avoided. Furthermore, they hide between narrow rocks during the day and when the waves are strong, and come out to the surface of rocks and blocks at night to feed on seaweed such as kelp and wakame.

``Object of the Invention'' The object of the present invention is to provide a concrete block connected structure that can be installed in a stable state, that can be easily installed, that can be manufactured at low cost, and that can create an aquaculture environment that suits the habits of abalone.
The object of the present invention is to provide an abalone aquaculture reef that can be used to create an even better aquaculture environment.

``Means for Solving the Problems'' The concrete block connected body of the present invention has a plurality of rectangular concrete plate blocks with substantially constant plate thickness, and each plate block has two long sides. A spacer having a recess formed on at least one side thereof, at least one through hole for transportation, etc. and at least one iron bar through hole each, and a communication hole that matches the iron rod through hole between the plate blocks. are interposed, the recesses are aligned, an iron rod is passed through the matching iron rod through holes and communication holes, and both ends of the iron rod are tightened and connected with a spacer to maintain a constant distance. do.

Furthermore, the abalone culture reef according to the present invention uses a plurality of connected concrete blocks as described above, and installs them at required intervals on the seabed ground with the concave portions facing downward. It is characterized in that stones with a diameter of 30 cm or more are piled up to a thickness of about 70 cm or about the height of the above-mentioned plate blocks between the connected bodies.

``Function'' Since the concrete block connected body of the present invention is made up of a plurality of plate blocks connected at regular intervals, seawater can circulate well in the sea. However, when the waves become strong, because there are gaps between the plate blocks, they receive almost no uplift force, which has the effect of disturbing the waves and reducing their energy. Therefore, the gap can be used as a refuge for abalone, and the upper end surface of the plurality of board blocks, which is long and slender and has many angular ridge lines, can be used as a suitable curing place for seaweeds such as kelp. Also,
Each board block has recesses, and multiple recesses are connected at regular intervals, so it can be installed stably on the seabed. Furthermore, it has through holes for transportation, etc., so assembly and installation work is easy. etc. is also easy.

Furthermore, since the abalone culture reef according to the present invention is constructed by installing a plurality of connected concrete blocks having the above-mentioned effect at the required intervals and depositing stones between them, it is possible to cultivate not only juveniles but also adult abalones. It can provide a large amount of good habitat for.

"Example" Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 (front view) shows one plate block constituting the concrete block connection according to the present invention. This board block 10 is an integrally molded concrete product in the shape of a horizontally long rectangle with a substantially constant board thickness.The four corners of the board block 10 are rounded, and upper and lower trapezoidal recesses 11 and 12 are formed in the center of both upper and lower long sides. is formed. In addition, through holes 13 for transportation, etc. are provided at the slightly upper portions of both the left and right sides of the plate surface, and iron bar through holes 14 smaller than the through holes 13 are provided at three locations: in the center between these and slightly lower portions on both the left and right sides. . Although the through hole 13 is shown as circular in the figure, it may be square.

FIG. 2 (side view) and FIG. 3 (plan view) show an example of a concrete block assembly A according to the present invention, which is assembled by connecting, for example, eight such plate blocks 10. This concrete block connected body A is made of 6 pieces of the same size with the above-mentioned structure.
One plate block 10a, and two plate blocks 10b at both ends, which have the same structure and height but are larger, that is, have longer long sides and are slightly thicker, are as follows. It is connected like this. In addition, these two types of large and small board blocks 10a,
10b has three iron bar through holes 1 even though the lengths are different.
The intervals between 4 are the same. That is, the iron rods (long bolts) 15 are passed through the three iron rod through holes 14 of the plate block 10b at the end, and the iron rods 15 are passed between the plate blocks 10b and 10a and between the plate blocks 10a. Spacers 16 provided with holes (not shown) are interposed at three locations, and the recesses 11 and 12 of the plate blocks 10a and 10b are aligned, and the iron bar 15 is aligned with the block 10.
After passing through the iron rods 15a and 10b and the spacers 16 alternately, both ends of the iron rod 15 are tightened with nuts or the like. As a result, the plate blocks 10a and 10b are connected to each other with an appropriate distance 17 maintained by the spacer 16 without directly adhering to each other. In this case, the iron rod 15 is thinner than the iron rod through hole 14 of the plate blocks 10a, 10b, and a play is formed between them.

Therefore, since the concrete block connected body A is assembled by connecting the plate blocks 10a and 10b with the iron rod 15, it is extremely simple to manufacture and can be easily mass-produced. Since each plate block 10a, 10b has a through hole 13, transportation and assembly work can be easily carried out by hooking a hanging fitting made of wire or H-beam steel into this through hole 13 during transportation or assembly. In addition, in this case, the concrete block connected body A as a whole has a plate block 10.
Even if a and 10b are flexible, they can be hung without significantly deforming the overall shape, and the hanging fittings can be easily attached and removed. In addition, this through hole 13 is connected to the plate block 10a,
It also has the effect of improving the flow of seawater between 10b, and when waves become strong, it disturbs them and reduces their energy.

Furthermore, since there is always a recess 12 on the lower side of each plate block 10a, 10b, it is easy to sit on even on uneven rock. Moreover, each plate block 10a, 10
Since there is play between the iron rod through hole 14 and the iron rod 15 in b, each plate block 10a, 10
Since b independently adapts to the height of the ground and is flexible as a whole, it easily bites into the irregularities of the ground and conforms to them. Therefore, even if waves act perpendicularly to the plate surface, the resistance force is large, and against waves parallel to the plate surface, there is little resistance due to the large number of gaps 17, and therefore, there is almost no uplift force. Therefore, it has extremely high installation stability and has an excellent wave-dissipating effect.

In addition, in the figure, the iron bar through hole 14 is inserted into the plate block 10.
However, this is not limited to three locations; in areas where the seabed ground is extremely uneven, it is provided only at one location in the center of the board block 10, and is penetrated through this location. The plate block 10 may be allowed to freely rotate around the iron rod.
Further, depending on the degree of unevenness of the ground, the location and number of holes to be drilled can be selected as appropriate, such as providing two locations, one on each side of the plate block 10, depending on the situation of the submarine ground.

Furthermore, although the recesses 11 on the upper sides of the plate blocks 10a, 10b are not necessarily required, it is convenient if they are provided because there is no need to distinguish between upper and lower parts during installation. In particular, in order to promote the adhesion of seaweeds such as kelp, there are
When attaching the reticulated pipe 4 as shown in the figure, if there is a recess 11 on the upper side, by attaching the reticulated pipe inside the recessed part 11, it can be protected from waves, etc., and its installation stability is increased.

Concrete block connected body A, which has the above-mentioned effects, provides a habitat for abalone even when used alone, but next, see Figures 3 and 4 for an example of an abalone culture reef constructed using a large number of them. Explain.

A large number of connected concrete blocks A are arranged on the seabed ground with a required interval between the ends of the plate blocks 10a and 10b, and the total area is 30 m x
Build an enclosure about 30m wide. FIG. 4 shows one corner of the enclosure partially omitted. Then, stones 19 with a diameter of 30 cm or more are placed in the gaps 18 between the concrete block connected bodies A and inside the entire enclosure, with a thickness of about 70 cm or plate blocks 10a,
It is deposited to a height of about 10b.

In the abalone aquaculture reef constructed in this way, the concrete blocks A are prevented from shaking each other by the stones 19 between them, and the stones 19 are formed by large plates, especially at both ends of the concrete block links A. Dissipation is prevented by the block 10b, and this synergistic effect increases the wave resistance, and together with the above-mentioned wave-dissipating effect of each concrete block connected body A, the abalone is protected from waves. This is very convenient for abalones, which have a habit of doing so. Moreover, 19 stones
In addition, since the upper end surfaces of the board blocks 10a and 10b are long and narrow and have many angular ridge lines, it is easy for seaweed such as kelp, which is food for abalone, to grow on the board blocks 10a and 10b.
Since the gap 17 between b is shaded and direct sunlight is blocked, an extremely good habitat for abalone can be easily provided in large quantities, and aquaculture productivity is greatly increased.

Also, during the abalone cultivation survey period, it is necessary to move the blocks and stones in order to collect young abalone adhering to the surface of the blocks and stones, but in such a case, the concrete block connection A is 15 and each plate block 10a, 1
Since the 0b can be separated one by one, the workability of the investigation is much easier compared to the conventional growing block shown in FIG.

"Effects of the Invention" The concrete block connected body of the present invention has the following effects.

Since it is made up of a plurality of plate blocks connected at regular intervals, it is possible to improve the circulation of fresh seawater in the sea. However, in the case of violent waves, it disturbs the waves and reduces their energy.

Since there is a gap between the board blocks, the space can be used as a refuge for abalone, and the long, slender and angular upper end surface of the multiple board blocks can be used as a suitable curing area for seaweeds such as kelp. , can provide an extremely good habitat for abalone.

Each plate block is provided with a recessed part, and the plate blocks are connected to each other by iron rods through spacers while maintaining a constant interval, so that the plate blocks can be installed in a stable state even on uneven seabed ground and are easy to manufacture.

Since each block has a through hole for transportation, etc., assembly and installation work is easy.

Furthermore, since the abalone culture reef according to the present invention is made by installing a plurality of connected concrete blocks having the above-mentioned effect at the required intervals and depositing stones between them, it is possible to cultivate not only young abalone but also adult abalone. It can provide a large amount of good habitat for.

[Brief explanation of the drawing]

Fig. 1 is a front view of one plate block, Fig. 2 is a side view of an example of a concrete block connected body according to the present invention constructed by connecting a plurality of plate blocks, and Fig. 3 is a side view of an example of a connected concrete block according to the present invention.
The figure is a plan view of an example of its installation, and FIG. 4 is a plan view of a portion of an example of an abalone culture reef constructed using this. Moreover, FIG. 5 is a perspective view of a conventional concrete block for growing abalone. A...Concrete block connection body, 10,1
0a, 10b... plate block, 11, 12... recess, 13... through hole, 14... iron bar through hole, 15...
...iron rod, 16...spacer, 17...gap.

Claims (1)

[Scope of Claims] 1. It has a plurality of rectangular concrete plate blocks with substantially constant plate thickness, and each plate block has:
A recess is formed on at least one of the two long sides, and at least one through hole and one iron bar through hole for transportation etc. are provided respectively, and the plate blocks have communicating holes that match the iron rod through hole. A spacer provided with is interposed, the above recesses are aligned, an iron bar is passed through the matching iron rod through holes and communication holes, and both ends of the iron rod are tightened and connected with a spacer to maintain a constant distance. A concrete block connected body characterized by: 2. Claims characterized in that the length of the long side of the board blocks located at both ends of the board blocks connected as described above is longer than that of the board blocks located between them. The concrete book connection body according to item 1. 3. The concrete block connected body according to claim 1 or 2, characterized in that play is formed between the iron rod through hole and communication hole and the iron rod. 4. It has a plurality of rectangular concrete plate blocks with approximately constant plate thickness, and each plate block has a
A recess is formed on at least one of the two long sides, and at least one through hole and one iron bar through hole for transportation etc. are provided respectively, and the plate blocks have communicating holes that match the iron rod through hole. A spacer provided with is interposed, the above recesses are aligned, an iron bar is passed through the matching iron rod through holes and communication holes, and both ends of the iron rod are tightened and connected with a spacer to maintain a constant distance. A set of connected concrete blocks, multiple sets of which are
Install stones with a diameter of 30 cm or more between the connected concrete blocks with a thickness of 30 cm.
An abalone cultured reef characterized by being piled up to about 70cm or about the height of the above board block.