JPH0335095Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to an artificial fish reef for the intermediate growth of fish, spiny lobster, abalone, etc., by filling stones in a steel frame.

Conventional Technology Conventionally, artificial fish reefs have been constructed using concrete blocks or steel frames, filled with stones, and sunk to the sea floor to attract, protect, and nurture fish, shellfish, and crustaceans.

Problems that the invention aims to solve The above-mentioned reef for juveniles and intermediate growth, which is filled with stones in a steel frame, is covered with a lid to prevent the stones packed inside from flying out due to waves, etc., but how to attach the lid. After filling with stones, insert it from the side and tighten the bolts,
Alternatively, methods such as placing it over the top and tightening it with bolts have been adopted, but either method requires time and effort to align the tops of the packed stones, so it is necessary to pack the stones low and set the lid before closing the lid. In many cases, the stones are filled between the latticeworks until they are completely filled, and with this method, the stones that have been packed in are often thrown out, making the work of filling the stones twice.

In addition, when fishing with gill nets in waters where these juvenile and intermediate rearing reefs have been installed, the gill nets set up directly above the reef may have their sinkers entangled in the grid of the reef lid, causing the net to be damaged. In addition, stone-filled artificial fish reefs have poor seawater permeability inside the reef, making it easy for sand and mud to accumulate, and in severe cases, it becomes impossible for young fish to live there. There is.

Means for solving the problems The present invention solves the above problems, and includes:
The contents will be explained below using FIGS. 1 to 5 corresponding to the embodiment.

Supports placed at a predetermined number of corners using steel materials...
, upper and lower frame members 2', 3' extending over the adjacent pillars 1, 1, and a large number of vertical bars 4 extending over these... each lattice side wall 5 is formed and surrounded by a large steel structure with an internal space. On the inner upper surface of the frame 6 and the lid edge frame 7 which is fitted and placed on the upper edge frame 2 of the steel frame, a vertical baffle plate 9 is provided with steel plates 8 arranged in a grid pattern and projected. A concrete plate 11 larger than the surroundings of the steel frame 11, which supports the lower end of the steel frame 6 by burying the lower part of each support 1 of the steel frame 6 in concrete and the lattice-shaped lid 10.
, a block 14 that secures a gap 13 through which seawater can pass, which may be mixed in with the stone 12, inside the steel frame 6, and the upper surface 7a of the lid edge frame 7 and the side of the upper edge frame 2 of the steel frame 6. This artificial reef is composed of a piece 2a and a key-shaped mounting jig 15 for attaching a lid, which is welded to the piece 2a.

The shape of the steel frame 6 is a box shape with an enclosed periphery, or since the outer surface area is large relative to the volume of the reef, its horizontal cross-sectional shape is configured into a cross shape 16 as shown in FIG. do. In addition, the block 14
It may also be a cross-shaped structure made by joining steel plates vertically and horizontally to form a void 13, a structure made by welding short pipes, or a block made of PVC or concrete in a similar shape.

Function All or all stones 12 are placed inside the steel frame 6 of the artificial reef.
At the same time, a block 14 is mixed in, a lattice-shaped lid 10 is fitted onto the upper surface of the steel frame 6, and a key-shaped mounting jig 15 is placed at intervals around the lid to fit the lid. The cover 10 is fixed by welding and attaching the cover to the upper surface of the frame 7 and the outer surface of the upper edge frame 2 of the steel frame 6, respectively. The concrete plate 11 at the bottom of this steel frame 6 is suspended and placed on the seabed in a predetermined sea area, and the larvae are submerged in the block. 14, it is possible to secure the circulation gap for seawater, which can prevent sand and mud from accumulating easily in the reef of stone-filled artificial fish reefs, and to ensure a good habitat for juveniles. The situation can be maintained over a long period of time.

In addition, when fishing with gill nets in the sea area where this artificial fish reef has been installed, the gill nets installed directly above the reef are constructed using a baffle plate whose sink is perpendicular to the top surface of the lid 10. 9 no longer gets in the way of falling into the grid of the lid 10 and getting tangled.

Example Embodiments of the present invention will be described below with reference to the drawings.

In Figs. 1 to 3, reference numeral 1 indicates each support made of steel arranged at the four corners, 6 indicates a support column 1 connected in parallel at intervals above and below across the adjacent support supports 1 and 1 at the corner;
This is a steel frame in which each lattice side wall 5 is formed and surrounded by lower frame members 2', 3' and a large number of vertical members 4 attached over these members.

Reference numeral 10 designates a lattice-shaped lid that is fitted and placed on the upper surface of the steel frame 6, and the lid edge is made of an angle and has a lower peripheral edge 7b that fits inside the upper edge frame 2 of the steel frame 6 with a margin. A vertical baffle plate 9 is formed by assembling a frame 7, a steel plate 8 whose upper corner is diagonally dropped over the inside of the frame in a cross-shaped pattern, and protrudes higher than the upper surface 7a of the lid rim frame 7, and a lid rim frame 10 that passes through the lower part of the baffle plate. It is integrally constructed with a large number of parallel lattice-shaped rods 17 fixedly mounted on the lattice rods 17.

Reference numeral 11 is a concrete plate having a predetermined thickness and a circumference larger than that of the steel frame 6, which is installed at the bottom of the steel frame 6, and the lower part of the support column 1 at each corner is buried in the concrete via a reinforcing connecting member 18. It supports the lower edge frame 3 of the frame 6.

14 is a block for joining steel pieces 14' in a grid shape to create a space 13 with a large porosity;
The seawater is mixed entirely or together with the stone 12 inside the steel frame 6 to create a gap through which seawater flows. This steel block 14 may be a block with various voids to which short pipes are connected and which allow water to flow in all directions.

Reference numeral 15 denotes a lid mounting jig formed in a key shape so as to fit against the top surface 7a of the lid edge frame 7 and the side surface 2a of the upper edge frame 2 of the steel frame 6, and is inserted into the steel frame 6. After filling with stones, the mounting jig 15 is welded to some place around the lid edge frame 7 and the steel frame 6, and the lid 10 is attached and fixed, and the reef is used to raise young spiny lobsters, abalone, etc. 19 is a hanging ring and a tethering ring. 20 is a baby discharger installed in the center of the steel frame 6;
It is equipped with an upright tube 21 and outlets 22 on four sides below the tube, and young larvae are introduced from the top of the tube and dispersed into the main reef through the four outlets 22.

FIG. 4 shows the deformation of the steel frame 6 and lid 10 in the present invention. In order to increase the surface area of the outer periphery relative to the volume of the steel frame, the horizontal cross section is changed to a cross-shaped steel frame 6a. The lid 10a is also configured in the shape of a cross, and is fitted onto the upper surface of the cross-shaped lid 10a and fixed by welding with a key-shaped mounting jig 15.

In this way, on reefs where young lobsters, abalone, etc. are raised, a good habitat for young larvae is preferably in areas that are directly washed by seawater, such as the outer periphery and the upper surface, and the reef is The surface area of the outer edge, which is favorable as a habitat, can be increased.

Figure 6 shows the state of gillnet facilities.

Effects of the invention Since the present invention has the above-mentioned configuration, after filling the steel frame with stones, the lid is attached using a key-shaped mounting jig, so that it can be fixed according to the fit of the lid. This eliminates the hassle of having to align the tops of the packed stones, fill them slightly and fill them from between the lattices after installing the lid, and the disadvantages of packed stones flying out due to waves, etc. A solid structure is obtained by fixing the lid by welding. Further, by making the horizontal cross section of the steel frame and lid into a cross shape, there is an advantage that the surface area of the outer edge that is directly washed by seawater can be increased. Furthermore, blocks with high porosity were installed all or mixed with stones to ensure gaps between stones within the steel frame, allowing good seawater flow to the inside of the reef and preventing the accumulation of sand and mud. , it is possible to maintain good habitat conditions for a long period of time.

In addition, since there is a parallel cross-shaped vertical baffle plate installed on the top of the lid, which is higher than the grid surface, when fishing with gill nets in the sea area where this fish reef is installed, the sinkers of the gill net will not reach the grid of the lid. There are practical effects such as no drop-off, prevention of entanglement of sediment, and safety as the net will not be damaged or cut.

[Brief explanation of the drawing]

Fig. 1 is an isolated perspective view of an embodiment of the present invention before assembly, Fig. 2 is a partially cutaway plan view of the assembly with internal stones removed, and Fig. 3 is the same as Fig. 2. FIG. 4 is a longitudinal sectional view, FIG. 4 is a perspective view before assembly showing another embodiment of the present invention, FIG. Figure 6 is a schematic diagram of the gillnet in use. 1... Support column, 2... Upper edge frame, 2a... Side surface,
2'...Top frame material, 3...Bottom frame material, 3'...Bottom frame material,
4... Vertical, 5... Grid side wall, 6, 6a... Steel frame, 7... Lid rim frame, 7a... Top surface, 8... Steel plate,
9... Baffle plate, 10, 10a... Lid, 11... Concrete plate, 12... Stone, 13... Gap, 1
4...Steel block, 15...Key-shaped mounting jig, 16...Cross-shaped.

Claims (1)

[Scope of claim for utility model registration] 1 A predetermined number of corner supports 1 made of steel material,
Upper and lower frame members 2',
3' and a large number of vertical rods 4 forming and surrounding each lattice side wall 5, a steel frame 6, and an inner side of a lid edge frame 7 fitted and placed on the upper edge frame 2 of the steel frame. A lattice-like lid 10 having vertical baffle plates 9 with steel plates 8 disposed in a grid pattern on the top surface, and a lid 10 in the form of a lattice having vertical baffle plates 9 protruding from the steel plates 8, and the lower part of each support 1 of the steel frame 6 are buried to form the steel frame 6. A concrete platen 11 that supports the lower end, a block 14 that secures a gap 13 through which seawater that is mixed in the steel frame 6 or mixed together with the stone 12 can pass, and the upper surface 7a of the lid edge frame 7 and the upper edge frame 2. A key-shaped (shaped) installation jig 1 that is applied and welded to the side surface 2a of the
An artificial reef consisting of 5. 2 The horizontal cross-sectional shape of the steel frame 6 is a cross shape 16
An artificial reef according to claim 1 of the utility model registration claim, characterized in that the artificial reef is constructed as follows. 3. The artificial reef as set forth in claim 1 of the utility model registration claim, characterized in that the blocks are parallel structures.