JPS6033449B2 - Structure for creating seaweed bed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for creating a recreational area that can be used in deep waters.

Currently, the creation of seaweed beds for the purpose of propagating fish and shellfish is mainly carried out in sea areas at depths of several meters to several tens of meters.

The reason why rice bran cultivation is carried out in such shallow waters is that the water depth at which seaweeds can grow is limited to the above-mentioned range where the sunlight necessary for photosynthesis can reach.

For this reason, small concrete blocks as shown in FIGS. 1 and 2 have conventionally been used to create seaweed beds.

The concrete block a in Fig. 1 has the external shape of a truncated quadrangular pyramid, each side of the base is approximately 50 skins long, and a seed rope b is scattered around it. Concrete block c in Figure 2 is also designed to be sunk into the sea with a seed rope d spread around it. Figures 3 and 4 show an example of a conventional desert land creation facility, in which hollow cube-shaped concrete blocks e with approximately 1.5 skin on each side are laid out on the seabed ground, and rocks f are placed on top of them. etc. to adjust the water depth.

These concrete blocks have sufficient functionality when the water depth is several meters, and are inexpensive and highly economical.

However, the small concrete blocks used to create a bushland in a subordinate area have the following problems.

■ Because it is small, it cannot be expected to be effective in deep baths (water depth 10 or more).

■ If constructed on a sandy seabed (this is the main purpose), it will be buried by drifting sand, etc., and it cannot be expected to maintain its functionality over a long period of time.

■Furthermore, when increasing the size for use in deep waters, the weight increases significantly, which is inconvenient in manufacturing, transporting, and sinking.

This invention aims to improve the above-mentioned drawbacks and provide a structure for creating a seaweed bed for deep sea areas, which includes a frame-shaped concrete foundation beam in contact with the seabed ground, and legs that are attached to the foundation beam. It consists of a plurality of fixed steel pipes forming columns and beams in a gate or inverted L-shape, and a pseudo rock such as stone or concrete slab for seaweed to be attached to the beams of the steel pipes.

The present invention will be explained below based on the embodiments shown in FIGS. 5 to 10. FIG. 5 is a perspective view of the embodiment, in which the foundation beam 1 is made of concrete IJ (usually made of reinforced concrete) and also serves as a weight for preventing movement.

In this embodiment, the foundation beam 1 is composed of an octagonal frame la and connecting beams lb and lc. In the figure, reference numeral 2 is an inverted L-shaped steel pipe, the legs of which are embedded in the foundation beam 1 and the tips thereof are joined by a joining plate 4.

Further, as shown in the plan view of FIG. 8, a pseudo rock 3 is attached to the beam portion 2b of the steel pipe 2 for the purpose of attaching seaweed. As shown in FIG. 9, this pseudo rock 3 is a steel pipe beam portion 2b.
A horizontal plate 6 welded to the horizontal plate 6 and a stone 3a placed on the angle 5, or a concrete plate 3b placed on the angle 5 welded to the steel pipe beam 2b as shown in FIG. 10 can be used. The height of the column part 2a of the steel pipe 2 is determined so that the pseudo rock attached to the beam part 2b is located at the optimal water depth for the growth of seaweeds, that is, several meters below the sea surface.

The structure for creating a desert land according to the present invention has the above configuration and has the following advantages and characteristics.

'1} By adjusting the height of the steel pipes that make up the columns and beams, the position of the pseudo rock can be determined arbitrarily.
It can fully demonstrate its function as a deep sea algae bath.

■ Steel pipes have a cross-sectional shape that minimizes wave force and tidal current force.
In addition to the reinforced concrete foundation serving as a weight, the Nukaba structure can be made safe against severe external force conditions.

{3} As is clear from the comparison between the illustrated conventional example and the embodiment, the structure according to the present invention allows easy access to the foundation, where shellfish (mainly It is also easy to grow and collect abalones.

■ By allowing sufficient corrosion allowance for the steel used, the seaweed bed function can be maintained for a long period of time.

'5} In addition, this structure also functions as a fish reef, so the sea area where it is installed can also be used as a fishing ground.

{61 Pseudo-rock as a base for seaweed settlement can have a larger flooded area than ropes, etc., and has excellent durability and strength as a base.

[7} Also, the pseudo rock mass is installed on an upward angle that is fixed to the beam of the steel pipe, so it is easy to install and has good stability without worrying about it shifting after installation.

Brief explanation of the drawings Figures 1 and 2 are perspective views of a conventional example, Figure 3 is a plan view of a conventional seaweed bed creation facility, Figure 4 is a longitudinal sectional view thereof, and Figures 5 to 10 are 5 is a perspective view, FIG. 6 is a plan view, FIG. 7 is a vertical sectional view, FIG. 8 is a plan view showing details of the upper part, and FIGS. FIG. 10 is a sectional view showing the installation of the pseudo rock.

a... Concrete block, b...
Seed rope, c... Concrete block, d...
... Seed rope, e... Concrete block, f...
...Rock, 1...Foundation beam, 2...
Steel pipe, 3...Pseudo rock, 4...Connection plate, 5...Angle, 6...Horizontal plate.

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 0

Claims (1)

[Claims] 1 A frame-shaped concrete foundation beam 1 in contact with the seabed ground, a plurality of steel pipes 2 whose legs are fixed to this foundation beam 1 and constitute pillars 2a and beams 2b in a gate shape or an inverted L shape, and the steel pipes 2. Stones 3a or concrete 3b for seaweed landing installed on the upward angle 5 fixed to the beam 2b of
A structure for creating a seaweed bed consisting of 3 made of solid rock.