JPH0642458Y2 - Artificial fish reef block - Google Patents

Description

[Detailed Description of the Invention] << Industrial Application Field >> The present invention relates to a concrete block for sinking into the sea floor to construct an artificial fish reef.

<< Prior Art >> A conventional artificial fish reef block 23 is, as shown in FIG.
It had a structure in which each side of the cube was integrally molded with a prismatic concrete material 24, and this block 23 was sunk to the seabed to construct an artificial fish reef.

<< Problems to be Solved by the Invention >> However, since the block having the above structure has a large opening area, there is a problem that the structure of the mold for molding the block is complicated and difficult to mold. Also, when the blocks are piled up, they may be broken by the weight, lack stability, and the blocks may be buried or collapsed in the sediment of the sea floor, so the constructed fish reef disappears in a relatively short period of time. There was a risk of In addition, because this type of block has a large open top and side surfaces, large fish can freely enter and leave the constructed artificial fish reef, and there is a vacant room for creating fish nests inside the reef. There was a problem that there was not enough space for the fry to grow.

An object of the present invention is to solve the above problems, and to provide an artificial fish reef block that is stable and hard to break, is easy to manufacture, and can easily form an empty chamber in the block if necessary. It is an issue.

<< Means for Solving the Problems >> An artificial fish reef block 13 of the present invention is a rectangular tube-shaped block 1 in which a ceiling surface, a bottom surface, and one opposite side surface are formed by concrete wall bodies 6, 2, 5. Is provided as a base body, a locking tool 8 such as a bolt hole for mounting the panel 14 is provided in the opening 6 on the side surface of the base body 1, and the wall body 2 forming the bottom surface of the base body is projected in the plane direction to form the recess 4 Or a through hole 17 or a recessed portion 18 in the opening 6 of the base body 1 is formed in the wall body 2, 5, 9 of the base body 1. The panel 14 having the above is fastened. When the latter structure is adopted, the vacant chamber 19 is formed in the base body. Alternatively, the former structure may be adopted to fasten the opening 6 to a panel having neither the through hole 17 nor the concave portion 18 to form the vacant chamber 19 in the base body. The above-mentioned through holes and recesses can be provided in both the base body and the panel, and the through holes 11 and 17 serve as passages communicating with the vacant chamber 19.

<Operation> The artificial fish reef block 13 of the present invention has a top wall, a bottom wall, and one opposing both side wall made of concrete,
Since the base 1 is formed into a rectangular tube shape with the number 2 and 5, the mold can be easily molded by a mold having the same structure as the mold for box culvert molding. Bottom wall 2
Since the peripheral flange 3 is formed by projecting to the outside of the base 1, the stability of the block is improved, a passage 25 is formed between adjacent blocks, and a space for swimming a large fish is secured. In addition, since the recess 4 is provided in the surrounding flange 3, a gap where the seabed sediment is exposed between the blocks when constructing an artificial fish reef.
21 can be formed, and seaweed can be grown at an early stage after fish reef construction. The recesses 12 and 18 formed on the upper side surface of the gap 21 serve as a habitat for shellfish that feed on seaweed. Further, the opening 6 of the substrate 1 is formed in the panel 14
By closing with, it is possible to form an empty room 19 that serves as a hideout for fish nests and small fish in the block. At this time, the size of the through hole 17 of the panel 14 formed separately from the base body 1 can be easily changed, and a passage having a size according to the environment for constructing the fish reef and the type of fish can be formed. Even if the panel 14 is not provided, the through hole 11 provided in the side wall 5 serves as an escape route for small fish.

<< Embodiment >> FIGS. 1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view of an artificial fish reef block and panel. In the figure, 1 is a rectangular cylindrical base body, 2 is a wall body forming the bottom surface of the base body 3, 3 is a peripheral flange projecting in the surface direction of the wall body 4, and 4 is a peripheral flange 3. A recess provided at the outer edge of the intermediate portion, 5 is a wall body formed on one of the opposing side surfaces of the base body 1, and 6 is an opening formed on the other opposing side surface of the base body 1,
Reference numeral 7 is a step portion provided in the opening 6, 8 is a nut member embedded in the step portion 7, 9 is a wall forming the top surface of the base body 1, and 10 is a circumference projecting in the surface direction of the wall body 9. Tsuba, 11 is the wall 2 of the base 1,
Reference numerals 5 and 9 denote oval through holes, and 12 is a rectangular recess provided near the through holes. Wall 2 forming the bottom
The peripheral flange 3 of the above extends largely outside the peripheral flange 10 of the wall body 9 forming the top surface.

5 and 6 show the panel mounted on the base body, and its perspective view is also shown in FIG. 14 is a rectangular concrete panel, 15 is a bolt insertion hole formed at four corners of the panel 14, 16 is a bolt which is inserted into the bolt insertion hole 15 and screwed into the nut member 8 of the base body, 17 is a panel 14 An oval through hole formed in the center, and 18 is a concave portion provided in the vicinity of the through hole. The panel 14 is a wall body that is fastened to the base body 1 and forms the other facing side surface of the base body 1,
An empty chamber 19 described later is formed in the base body.

FIG. 7 is a sectional view showing an artificial fish reef formed by the block of the present invention. A panel 14 is fastened to the block 13, the end faces 3a of the peripheral flanges 3 of the block 13 are juxtaposed side by side, and a recess 21 of the block forms a gap 21 to construct an artificial fish reef. If necessary, the panel 14 is attached to form the empty chamber 19 in the block. On the artificial fish reef thus formed, seagrass grows from the gap 21, and shellfish that feed on the seagrass inhabit the recesses 12 and 18 provided in the base 1 and the panel 14. Through hole 11, in the vacant room 19 in the block,
Small fish enter and leave through 17 and the size of the through hole determines the size of the fish that can enter and leave the vacant chamber 19. Since no large fish can enter this vacant room 19, a space is secured for growing small fish and fry.

<< Effects of the Invention >> As described above, the artificial fish reef block of the present invention is based on the rectangular tube-shaped block, so that the molding frame can be easily designed and manufactured. Further, since the artificial fish reef block of the present invention is provided with a rim having a recess on the bottom wall, the stability of the block is improved and the constructed artificial fish reef sinks or collapses on the seabed in a short period of time. Since there is no fear and a passage is formed between the bases of adjacent blocks, it is possible to secure a habitat for crustaceans and seaweed. Furthermore, since one of the side surfaces of the base body is a wall body and the other is an opening,
A space for fish shells and fry to grow, by providing through holes and recesses in the wall to allow shellfish to live and, if necessary, fastening panels to the openings to form empty chambers in the base body. Can be secured.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention, and FIG. 1 is a perspective view of an artificial fish reef block and panel,
2 is a front view of the artificial fish reef block, FIG. 3 is a side view thereof, and FIG. 4 is a plan view thereof. FIG. 5 is a front view showing a panel fastened to an artificial fish reef block, and FIG. 6 is a front view.
It is an A section sectional view of the figure. FIG. 7 is a sectional view showing an artificial fish reef formed of blocks. FIG. 8 is a perspective view showing a conventional block. In the figure, 1: base body, 2: bottom wall body 3: surrounding flange of wall body 2, 4: recess 5: side wall body, 6: opening 8: nut member, 9: top wall body 10: Perimeter of wall 9, 11: Through hole 12: Recessed portion, 14: Panel 17: Through hole of panel, 18: Recessed portion of panel 19: Vacancy

Claims (3)

[Scope of utility model registration request] 1. A rectangular tube-shaped block (1) having concrete walls (9, 2, 5) on the top surface, the bottom surface and one of the opposite side surfaces as a base body, and the other of the base bodies facing each other. The openings (6) on both sides are provided with a locking tool (8) for mounting a separately molded panel (14), and the wall body (2) forming the bottom surface is a recess (4). A block for artificial fish reef, which is provided with a planar flange (3) having 2. The artificial fish reef block according to claim 1, wherein the walls (2, 5, 9) of the base body are provided with through holes (11) or recesses (12). 3. The artificial fish reef according to claim 1, wherein a panel (14) provided with a through hole (17) or a recess (18) is fastened to the opening (6) with a locking tool (8). For blocks.