JPH0614818B2 - Algae block - Google Patents

Description

Detailed Description of the Invention

[Field of Industrial Application] The present invention relates to an algal reef block for forming a seaweed bed formed of concrete or the like and submerged in the sea. [Prior Art] In recent years, the claim of 200 kairi fishing areas has become popular in each country, making it difficult to operate freely near the coast of a foreign country. Therefore, each country is making efforts to research various marine development technologies from the viewpoint of redeveloping the seas near their own countries as fishing grounds. In particular, it is an urgent task to create a good fishing ground near the sea. To do so, it is necessary to first create a rich seaweed bed and make it possible for various types of fish to live. As such algae reef block in forming a seaweed bed, a submerged reef block made of concrete is known. This alga reef block is currently the mainstream because it is excellent in terms of securing raw materials, ease of molding, installation stability, and durability. Then, as a method for creating a seaweed bed using a concrete reef block, 1. Put the base of the reef block in the sea and wait for the algae species to attach naturally, 2. Put it in the sea. Artificial seeds of algae are artificially sown on the subsequent algal block, 3. The parental alga that is growing is artificially transplanted and fixed to the algal block after being put into the sea, 4. The algal block after being put into the sea In some cases, algae seeds are attached to threads or nets in advance, and algae seeds that have been cultured to some extent are fixed together with the threads or nets. The seaweed bed creation methods 3 and 4 above are effective for algae growth and are widely used. At that time, the parent algae, seed threads, seed nets, etc. are attached to the alga reef block with an adhesive. They were fixed by tying them with ropes, etc., or by striking them with nails. [Problems to be Solved by the Invention] However, in the conventional alga reef block, even if a seed net or the like is fixed with an adhesive, it is peeled off due to the tidal current or waves, and the alga's fixing property becomes low There was a flaw. When tied with a rope, etc., the rope will loosen and will sway due to waves, which will damage algae due to friction. Therefore, it takes time to drive the nails, work efficiency is poor, and cracks may occur in the block due to concrete nail driving, so there is a problem that there is no guarantee that nails can be driven while surely maintaining friction resistance. there were. The present invention has been made to solve the above problems,
It is an object of the present invention to provide an algal block in which parent algae, seed nets, etc. can be easily attached, and the seed nets, etc. can be firmly fixed for a long period of time after being deposited. [Means for Solving the Problem] As shown in FIG. 1, the above-mentioned object has a submersible block formed of a material having a higher specific gravity than seawater, and a soft material fixed on the surface of the block. The soft material is formed of a material into which the stopper can be driven, and is achieved by driving the stopper into the soft material to provide an alga reef block for fixing parent algae, seed threads, seed nets and the like.

[Action]

Algae or seeds of algae adhere to the soft material, and the seed threads or nets that have been cultivated are fixed by driving fasteners such as nails. As a result, the seed net or the like can be fixed to the alga reef block quickly, easily and surely. EXAMPLES The present invention will be described below with reference to the drawings. 1 and 2 are views showing an embodiment of the present invention, in which a block 1 made of concrete material is a base having a substantially V-shaped cross section. The block 1 is hard, can be submerged in the sea, and has a specific gravity and weight that prevent it from sliding due to wave motion or tidal current. A plurality of semi-annular connecting portions 2 are respectively provided on the four side surfaces of the block 1 so as to project. These connecting portions 2 are connected to other blocks 1 by a predetermined connecting tool, or are used as hanging metal fittings during movement. To be done. At the four corners of the bottom surface of the block 1, leg portions 3 each having a rectangular cross section are provided so as to project. The upper surface of the block 1 is a roof type, and several slopes 5 as a soft material made of wood having a substantially rectangular cross section are embedded in each slope having a gentle slope. The timber 5 is soft and can be nailed or stapled. A nail or the like is made to project in advance on the surface of the fork square member 5 that comes into contact with concrete at the time of placing concrete in order to prevent it from coming off. A hole 6 penetrating from the top surface to the bottom surface in the center of the block 1.
When a plurality of holes are formed and these holes 6 are submerged in the sea, waves and tidal currents are allowed to pass therethrough to alleviate the lifting pressure acting on the block 1. The algae, seed thread, seed net, or the like is fixed to the timber 5 on the alga reef block 1 by driving a nail or the like. Although the algae and the like are fixed before or after they are submerged in the sea, even if they are fixed in water, anyone can easily work because they are driving nails or the like into the timber 5. FIGS. 3 and 4 show a modification of the embodiment, which is composed of a corrugated block 8 integrally formed by connecting two blocks 1 of FIG. Each material 5 is fixed to each slope on the upper surface of the corrugated block 8. Legs 3, holes 6 and connections 2 are likewise provided. The fixation of the seed net is the same as described above. The block is not limited to concrete,
Other materials may be used as long as they can be stably submerged in seawater. The soft material into which the fork stopper can be driven is not limited to the square material, and may be another material such as rubber. Further, the method of fixing the square members or the like is not limited to the embedding method, but bolts or the like may be provided in advance on the block, and the square members or the like may be fastened and fixed to the bolts or the like with nuts or the like. [Effects of the Invention] As described above, according to the present invention, a soft material is arranged on the surface of a block, and algae, seed nets, etc. are fixed to the soft material using a stopper. Thus, the state of parental algae or the state of seedlings held by nets or threads can be appropriately selected and fixed to the block in consideration of the situation of the sea area. Also, since the algae, seed threads or seed nets are struck by nails etc. to the timber fixed to the alga reef block to fix it, anyone can easily perform the fixing work, and for a long time after the deposit, Parental algae, seed threads, seed nets, etc. are firmly fixed to the algal block. This ensures the growth of seaweed and promotes the creation of seaweed beds.

[Brief description of drawings]

FIG. 1 is a plan view of a reef block according to an embodiment of the present invention,
FIG. 2 is a side view thereof, FIG. 3 is a plan view of a modification of the embodiment, and FIG. 4 is a side view of the modification. 1 ... Block, 2 ... Connection part, 3 ... Leg part, 5 ... Square bar, 6 ... Hole, 8 ... Corrugated block.

Claims (1)

[Claims] 1. A submersible block formed of a material having a higher specific gravity than seawater, and a soft material fixed to the surface of the block, wherein the soft material is formed of a material into which a stopper can be driven. An alga reef block that fixes the algae, seed threads, seed nets, etc. by driving the stopper into the soft material.