JP2608824B2 - Structures such as aquaculture equipment that can be installed on the silt layer and their installation methods - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure such as an aquaculture apparatus which can be installed in a silt layer and a method of installing the same, and more particularly, to a silt made of soft clay such as silty clay or sludge. The present invention relates to structures such as fish reefs and other aquaculture plants and aquaculture devices that can be installed in layers, and the installation method.

[0002]

2. Description of the Related Art Conventionally, as a method of installing a structure such as an aquaculture apparatus in a silt layer, the following configuration is employed. In other words, several piles are driven into the solid ground under the silt layer, and the structure is installed based on this (Fig. 5).
(A)). A structure in which a buoy is floated on the sea and the buoyancy is used to suspend the structure in the sea and fix it at an arbitrary position (Fig. 5).
(B)). A configuration in which a hard ground is formed by mixing and mixing a coagulant and the like into a soft silt layer and solidifying the silt layer, and a structure is installed by driving a pile or the like into the ground. Etc. are known.

[0003]

However, in the case of the above-mentioned structure, any of the problems remains, and it cannot be said that the method is a sufficient installation method on the silt layer. That is, in a configuration in which the pile is driven into the lower layer of the silt layer, a stable state can be maintained for a long period of time, but the construction period is long and the installation cost is enormous. In the configuration using the buoyancy by the buoy, the structure can be installed at an arbitrary position in the sea, but it becomes an obstacle to navigation of a ship and the installation place is limited. In the configuration for hardening the silt layer, it is necessary to select and use a coagulant depending on the composition and soil quality of the silt layer, and the coagulation work is troublesome. Problems such as remain.

Since the silt layer is composed of silty clay, soft soil such as sludge as described above, the habitat and habitat of fish and shellfish are often inferior and cannot be effectively utilized. is the current situation.

Therefore, the inventor of the present invention has a simple structure and means even at a portion having such a silt layer,
By installing fish reefs and other aquaculture plants and aquaculture equipment,
When the structure is installed on the silt layer by balancing the buoyancy and the load on the structure as a result of conducting various studies and tests based on the viewpoint that it is not possible to farm fish and shellfish. It was found that the structure slightly sediments with time, but after a certain time, the structure stops in the silt layer.

The present invention has been made in response to the above-mentioned problems, and its object is to provide a silt layer which can be installed in a stable state in the silt layer and which can maintain the stable state for a long period of time. An object of the present invention is to provide a structure such as an aquaculture device that can be installed and a method of installing the same.

[0007]

Means for Solving the Problems As a means for solving the above-mentioned problems, a structure such as an aquaculture apparatus which can be installed in a silt layer according to the present invention is used in a structure such as a fish reef or other aquaculture apparatus. An object has a structure in which a plurality of columns for supporting the load are provided, a cylinder having an upper lid is provided below the column, and the plurality of columns or cylinders are horizontally connected by a pressure receiving plate.

Further, the method of installing a structure such as an aquaculture device which can be installed on a silt layer according to the present invention comprises providing a plurality of struts for supporting the load on a structure such as a fish reef or other aquaculture device, and A cylindrical body provided with an upper lid is provided, the structure is lowered into the silt layer with the cylindrical body facing downward, and the air inside the cylindrical body is compressed so that it can be fixed and installed on the silt layer. It is composed of

[0009]

According to the present invention, a structure such as an aquaculture device which can be installed on a silt layer and a method of installing the same are provided with a cylinder having an upper lid (blocking plate) at a lower portion of the structure via a support, and the inside of the cylinder is provided. The air is compressed by the water pressure according to the water depth, and the buoyancy due to the compressed air and the pressure acting on the cylinder are balanced with the load of the structure, thereby acting to prevent the structure from sinking.

Therefore, by balancing the buoyancy due to the compressed air and the load on the structure, when the structure is installed on the silt layer, the structure slightly sinks over time, but after a certain period of time, the structure is removed. The structure can be installed and fixed to the silt layer in a stable state by stopping in the silt layer.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are as follows.
1 shows an embodiment of the present invention, FIG. 1 is a schematic front view of a structure, FIG. 2 is an enlarged view of a cylindrical portion, FIG. 3 is a sectional view taken along line AA of FIG.
FIG. 3 is an explanatory diagram of a system in which a structure is fixed to a silt layer.

The structure of the aquaculture device or the like that can be installed in the silt layer of this embodiment is a culture device, and, roughly speaking, columns 2, 2 ... Are provided at the bottom of the aquaculture device main body 1. , 2 ... are provided with cup-shaped cylinders 3, 3 ..., And the cylinders 3, 3 ... Are connected horizontally by a pressure receiving plate 4.

The aquaculture apparatus body 1 is composed of a normal aquaculture equipment such as a fish reef, and has a column 2 and a plurality of upper and lower (three upper, middle, lower, and upper stages) rectangular culture beds 5a, 5b, 5c and a gas injection box. 6. Prop 2,2 ...
Is made of steel having a length of about 4.5 m and supports and fixes the rectangular culture beds 5a, 5b, 5c.

Each of the rectangular culture beds 5a, 5b, 5c is made of an iron plate, and is horizontally supported at intervals of 2 m.
It is fixed by welding. A rocky area, a sandy area, etc. are formed on the floor surface. That is, upper floor 5
In a, natural stones and blocks are installed to make a pseudo rocky area,
Each of the inner floor 5b and the lower floor 5c is provided with a reinforcing material standing at a height of about 15 to 30 cm around the periphery and other places, and constitutes a rectangular box divided into a plurality of sections. Then, sand of about 10 to 30 cm is laid in each of the sections to form a pseudo sandbox. In addition, a lighting port is provided at the center. In addition, the gas injection box 6 is
It is designed to prevent starfish from climbing up. The lower surface of the starfish is open, and a gas such as air or nitrogen gas is injected into the inside.

The cylindrical bodies 3, 3, ... Are cylindrical bodies (in other words, cup-shaped cylindrical bodies) provided with the upper lid 8, and the columns 2, 2.
・ It is provided at the lower part of. The size of the cylinders 3, 3, ... Is larger than the diameter of the columns 2, 2 ,.
Although it depends on the weight, a cylinder having an inner diameter of about 3 to 5 times is used. The upper portions of the cylindrical bodies 3, 3, ... Or the columns 2, 2, ... Are horizontally connected by the pressure receiving plate 4.

The pressure receiving plate 4 is formed of a single metal (or synthetic resin) plate, and has a cylindrical body 3.
・ Or it is connected to the struts 2, 2 ・ ・ (connected to the cylindrical bodies 3, 3 ・ ・ in the drawing), and the aquaculture apparatus main body (structure) 1
I try to receive the weight (load) of.

By the way, the installation of the aquaculture apparatus main body 1 of the present embodiment on the silt layer 7 is carried by transporting the aquaculture apparatus main body 1 to the installation site by a marine crane, and after hoisting the marine crane, the cylinders 3, 3 are Are lowered so as to be perpendicular to the silt layer 7, and the cylinders 3, 3. After the bottoming, the cylinders 3, 3
Is pushed into the silt layer 7 in a state of hitting a pile, the internal air is compressed, the repulsive force of the compressed air and the weight of the structure are balanced, and the subsidence is stopped, and at the same time, the cylindrical body 3 , 3,... Are brought into close contact with the silt layer 7 to be in a stable state, and the installation is completed.

Therefore, the aquaculture apparatus main body 1 is attached to the silt layer 7
A system that can be fixed on will be described with reference to FIG. First, as shown in FIG. 4 (a), stable in soft ground is that the weight a of the structure pushes the cylindrical body 3 into the silt layer 7, compresses the air inside, and repulsive force (supporting force). ) B. The cylindrical body 3 pushed into the silt layer 7 exerts a force (horizontal and left and right) to support the cylindrical body 3 due to friction generated by the pressure d inside and outside the cylindrical side surface to which the pressure c due to the water depth is applied. Further, as shown in FIG. 4 (b), the pressure receiving plate 4 in which the four cylinders 3, 3,... Are connected horizontally receives the entire weight and exerts an effect on the supporting force and the inclination. Thus, the structure settles in the silt layer 7.

[0019] Usually, the stability is increased by connecting a plurality of the above-mentioned constitutions in parallel.

It should be noted that the present invention is not limited to the above-described embodiments, but includes those which can be modified and implemented without departing from the scope of the present invention. Incidentally, as a cylinder, FIG.
As shown in (c), a configuration in which a lower blocking plate 9 is provided at the bottom of the cylindrical body 3 may be adopted. In the case of this configuration, it is possible to further increase the buoyancy.

[0021]

As is apparent from the above description, according to the structure of the present invention, such as the aquaculture device, which can be installed in the silt layer, and the method of installing the structure, the upper lid (blocking plate) is provided below the structure through the support. ) Is provided, the air inside the cylinder is compressed by water pressure due to water depth, and the buoyancy due to the compressed air and the pressure acting on the cylinder are balanced with the load of the structure, As we try to prevent the settlement of the structure,
This has the effect that structures such as aquaculture devices can be installed in a stable state on the silt layer, which is soft ground.

Therefore, according to the structure of the present invention, such as a culture device that can be installed on the silt layer and the method of installing the same, the sea of the silt layer where algae and fish and shells cannot live can be used as a fishing ground,
In addition, since it is configured to be installed on the seabed, it does not hinder the navigation of the ship, and can be installed more simply and at lower cost than the pile driving method.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a structure showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a cylindrical portion.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is an illustration of a system in which a structure is fixed to a silt layer.

FIG. 5 is a schematic front view of a conventional example.

[Explanation of symbols]

1 ... Aquaculture device main body (structure), 2 ... Strut, 3 ...
..Cylinders, 4 ... Pressure receiving plates, 5 ... Rectangular culture beds, 6 ...
..Gas injection box, 7 ... Silt layer, 8 ... Upper lid (upper closing plate), 9 ... Lower closing plate

Claims (2)

(57) [Claims] 1. In a structure such as a fish reef or other aquaculture device, a plurality of columns for supporting the load are provided on the structure, and a cylindrical body having an upper lid is provided under the column, and the plurality of columns are provided. Alternatively, the aquaculture device that can be installed in the silt layer is characterized in that the cylindrical bodies are connected horizontally by a pressure receiving plate. 2. A structure, such as a fish reef or other aquaculture equipment, provided with a plurality of columns for supporting the load, and a cylinder having an upper lid provided at a lower portion of the column, and the structure is placed with the cylinder facing downward. A method of installing a structure on a silt layer, wherein the structure is fixed to the silt layer by lowering the air into the silt layer and compressing the air inside the cylindrical body.