JP3677323B2 - Aquaculture resource aquaculture type structure and its construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an aquaculture resource aquaculture structure in which an artificial root is constructed behind a coastal conservation structure, and a method for constructing the structure.
[0002]
The aquaculture resource aquaculture type structure of this invention is used for aquaculture of fish and shellfish, seaweed and kelp.
[0003]
[Prior art]
For example, offshore breakwaters, submerged breakwaters, breakwaters, and artificial reefs are known as coastal protection structures, which can prevent offshore waves and prevent overtopping, protect sandy beaches on the back coast, protect coastlines and harbors. Has contributed. More specifically, a bank pier built by stacking box-shaped frames filled with stones (see, for example, Japanese Utility Model Publication No. 52-50824), a slope of an underwater mound embankment with a box-shaped frame packed with stones. A covered bank (see JP-A-6-2318) is known.
[0004]
Many breeding reefs for the purpose of aquaculture of seafood have been proposed. As one of them, there is a structure in which a breeding reef is constructed by stacking a large number of box-shaped steel frames filled with stones (see Japanese Utility Model Publication No. 58-53977).
[0005]
Although the problem of depletion of coastal fishery resources has been screamed for a long time, in recent years, in order to increase aquaculture of aquatic resources, it has been considered to provide not only port functions but also artificial roots in port facilities. For example, stones are piled up behind a breakwater to form artificial roots, where seafood, seaweed, kelp, etc. are cultivated. Artificial roots are calm because the waves are blocked by the offshore bank, and there is a flow of seawater of appropriate strength. For this reason, algae spores are attached to stones and the like, grow and become an algae basin, and serve as a spawning ground for seafood or a food basin.
[0006]
[Problems to be solved by the invention]
As mentioned above, the necessity of increasing the fishery resources of useful seafood in the vicinity of the coast and the ease of capturing these seafood have become major challenges for future aquaculture of coastal fishery resources. .
[0007]
The present invention provides an aquaculture resource aquaculture structure that can efficiently aquaculture fry and shellfish, can withstand long-term use, and can be constructed economically and easily, and a method for constructing the structure It is something to try.
[0008]
[Means for Solving the Problems]
The aquaculture resource aquaculture type structure of the first invention is a fishery resource aquaculture type structure comprising a coastal conservation structure and an artificial ridge formed behind the coastal conservation structure and following the coastal conservation structure. Artificial roots are composed of a foundation formed by stacking stones, and a box-type lattice method block that projects a box-like lattice frame on the upper surface of the first half of the block base packed with agglomerates and constitutes an algae attachment part It has become. The box-type lattice method block has an algae attachment part located on the shore side, and the rear end surface of the algae attachment part is in contact with the tip surface of the next-stage box-type lattice method block so that it has a downward slope toward the shore. The next-stage box-shaped lattice method block is mounted in a stepped manner on the block base and foundation of the previous-stage box-shaped lattice method block.
[0009]
The aquaculture resource aquaculture type structure of the second invention is a fishery resource aquaculture type structure comprising a coastal conservation structure and an artificial ridge formed behind the coastal conservation structure and following the coastal conservation structure. Artificial root is a flat top foundation formed by stacking stones, a normal foundation formed by stacking stones so as to descend downward toward the shore, and a block base packed with blocks A box-shaped lattice-shaped top end block provided with a plurality of rod-shaped members on the upper surface of the surface, and a box-shaped lattice frame projectingly provided on the upper surface of the front half of the block base portion packed with agglomerates. It consists of a box-shaped lattice method block that constitutes the algae attachment part. The box-shaped lattice top block is laid on the top foundation. The box-shaped lattice method block has an algae attachment part located on the shore side, and the tip of the next-stage box lattice method block is in contact with the rear end surface of the algae attachment part so that it descends toward the shore. The next-stage box-shaped lattice method block is mounted in a stepped manner on the block base and the base of the previous-stage box-shaped lattice method block.
[0010]
In the aquaculture resource aquaculture type structure configured as described above, the top of the top is suitably a water depth at which sunlight necessary for algae growth reaches, for example, 5 to 6 m. Moreover, the box-shaped lattice-shaped top end top block and the block consisting of only the base may be arranged in a staggered manner, and the top end surface may be formed to be uneven. It is desirable to install a scouring prevention block at the forefront of the law department. The scour prevention block prevents the law part from collapsing because the bottom of the law part is washed away by seawater.
[0011]
The construction method of the aquaculture resource aquaculture type structure of the first invention comprises the following steps.
(B) The first step of placing the scouring prevention block at the required distance from the shore and arranging it along the shore (b) With the front end surface of the box-type lattice method block in contact with the rear end surface of the scouring prevention block The second step of arranging the box-shaped lattice method block (c) The third step of stacking stones on the sea floor to the height of the box-shaped lattice method block to form the bottom of the foundation (d) The previous step arranged in the second step The next box lattice method block is placed in the previous box lattice so that the tip end surface of the block base of the next box lattice method block is in contact with the rear end surface of the algae attachment part of the box lattice method block of The fourth step (e) placed on the block base of the shape method block and the stone piled up in the third step (e) of the box-type lattice method block piled up in the fourth step on the stone piled up in the third step Fifth process of stacking stones to height If Repeat the fifth step, a sixth step [0012] stacking box-shaped grid method blocks to the required height
The construction method of the aquaculture resource increased culture type structure of the second invention comprises the following steps.
(B) The first step of placing the scouring prevention block at the required distance from the shore and arranging it along the shore (b) With the front end surface of the box-type lattice method block in contact with the rear end surface of the scouring prevention block Second step of arranging the box-shaped lattice method blocks (c) Third step (d) of stacking stones on the sea floor to the height of the box-shaped lattice method blocks arranged in the second step (d) Second The next-stage box lattice method block is placed so that the tip end surface of the block base of the next-stage box lattice method block is in contact with the rear end surface of the algae attachment portion of the previous-stage box lattice method block arranged in the process. The fourth step (e), which is placed on the block base of the box lattice method block in the previous stage and the stones stacked in the third step (e) The box shape stacked in the fourth step on the stones stacked in the third step 5th step of stacking stones up to the height of the lattice method block F) Repeat step 4 and step 5 above to stack the box-shaped lattice method blocks to the required height. Step 6 (G) Box on the rear end face of the topmost box-shaped lattice method block Place the box-shaped grid top block at the top so that the top face of the top grid block touches the base, and then the rear box on the rear end face of the front box grid top block A seventh step of laying a box-shaped grid-like top end block on the foundation so that the tip face of the grid-like top end block touches the base.
You may make it construct | assemble the artificial ridge behind the existing coastal protection structure for the said aquaculture resource increase culture type structure construction.
[0014]
The seawater that has come around the coastal protection structure, or the seawater that has passed through the gap between the box-type lattice top block and the box-type lattice method block that make up the coastal protection structure, Waves are weakened by the structure and the flow becomes calm. The seawater that flows into the artificial roots supplies fresh seawater to the artificial roots and carries algae and seafood. The algae that have been transported adhere to the algae deposits and cobbles of the top and law departments, or grow on the foundation stones. Artificial roots become seafood habitats, feeding grounds, and egg-laying grounds by the propagation of algae, and seafood from the inland sea or the open sea settles on artificial roots and propagates. The gap between the stones becomes a hideout or a place for seafood. Artificial roots have fresh seawater and calm flow, and algae adherence is provided at the top and the lawn so that algae can easily propagate. For this reason, the survival rate of fry and larvae increases.
[0015]
In the present invention, a box-shaped grid top end block or a box-shaped grid method block is laid or stacked on the surface of a foundation on which stones are stacked. Since stone is cheaper than these blocks, it is possible to economically construct an aquaculture resource aquaculture structure. After stacking the box-shaped lattice method blocks, stones are stacked up to the height of these blocks and the foundation is formed in sequence, so that the level of the stacked stones can be easily obtained and the foundation can be easily constructed. Also, in the law section, the algae attachment part protrudes from the upper half of the block base of the box-type lattice method block, and the rear end surface of the algae attachment part located on the shore side is in contact with the front end surface of the latter box-type lattice method block. In this way, it is placed on the foundation in a staircase pattern. Therefore, even when exposed to severe waves, the box-shaped lattice method block is difficult to shift back and forth, and the method portion is strong. Furthermore, the positioning construction of the box-shaped grid method block at the time of construction becomes accurate and easy, and the construction of the fishery resource aquaculture type structure becomes easy.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment of the first invention)
FIG. 1 shows an example of a fishery resource aquaculture type structure of the present invention. The fishery resource aquaculture type structure mainly includes a foundation 12, a coastal protection structure 21, and an artificial radish 51.
[0017]
The foundation 12 is constructed by stacking medium crushed stones 13 on the seabed 11. The foundation 12 includes a coastal conservation structure foundation 14. In the coastal conservation structure foundation 14, a flat portion 14b continues to a tip portion 14a inclined toward the offing.
[0018]
The coastal conservation structure 21 is constructed by stacking a large number of tetrapod-shaped blocks 22 on the coastal conservation structure foundation 14.
[0019]
An artificial ridge 51 is provided behind the coastal conservation structure 21 following the coastal conservation structure 21. Artificial root 51 is legal. The artificial root 51 is constructed by placing a box-shaped lattice method block 52 on the lawn foundation 18 that has a stepped downward slope toward the shore following the coastal conservation structure foundation 14. Yes.
[0020]
As shown in FIG. 2, the box-shaped grid-like method block 52 includes a box-shaped grid-like block base 53 reinforced with a round steel 55 and having a framework composed of square columns 54 made of square steel pipe. A prism 54 in the front half of the block base 53 protrudes upward. A lattice 58 made of round steel is attached to the top and middle of the protruding portion of the prism 54, and an algae attachment portion 57 is formed. The box-shaped lattice method block 52 has a step shape as a whole. The block base 53 is packed with a stone 60.
[0021]
FIG. 3 shows another example of a box-shaped lattice method block. The box-type lattice method block has no lattice at the middle part of the algae attachment part 63 and is filled with stones 60.
[0022]
As shown in FIG. 1, the box-shaped lattice method block 52 is arranged so that the algae attachment portion 57 is located on the shore side. Then, the box-shaped lattice method block 52 is placed on the method base 18 in a stepped manner so that the rear end surface of the algae attachment portion 57 is in contact with the front end surface of the box-shaped lattice method block 52 in the subsequent stage. Sone 51 is formed. The side surfaces of adjacent box-shaped lattice method blocks 52 are also in contact with each other.
[0023]
A scouring prevention block 45 is provided so as to be in contact with the tip of the lowermost box-like lattice method block. The scouring prevention block 45 has a tip inclined toward the shore, is formed in a box-like lattice shape, and is filled with stone (not shown). The scour prevention block 45 prevents the artificial bottom 51 from collapsing because the seabed 11 at the tip of the artificial root 51 is washed away by seawater.
[0024]
The aquaculture resource aquaculture structure configured as described above is constructed as follows.
The scour prevention block 45 is arranged at a predetermined distance from the shore and along the shore. The box-shaped lattice method blocks 52 are arranged so that the front end surface of the box-shaped lattice method block 52 is in contact with the rear end surface of the scour preventing block 45, and the height of the block base 53 of the box-shaped lattice method block 52 is reached. Stone members 13 are stacked on the seabed 11 to form the bottom of the foundation 12. The tip surface of the block base 53 of the next-stage box lattice method block 52 is in contact with the rear end surface of the algae attachment portion 57 of the previous-stage box lattice method block 52 arranged as described above, so that The box-shaped lattice method block 52 is placed on the block base 53 and the bottom of the foundation 12 of the previous box-shaped lattice method block 52. The stone 13 is stacked up to the height of the box lattice method block 52 in the next stage. By repeating the stacking of the stone material 13 in the box-like lattice method block 52 and stacking them up to a required height, the artificial root 51 is formed.
[0025]
In the fishery product aquaculture type structure configured as described above, the artificial ridge 51 passes through the seawater that has wrapped around the coastal conservation structure 21 or the gap between the blocks 22 that constitute the coastal conservation structure 21. The seawater that has come has a calm flow with the waves being weakened by the coastal protection structure 21. The seawater that has flowed into the artificial root 51 supplies fresh seawater to the artificial root 51 and carries algae and seafood. The algae that have been carried adhere to the algae attachment portions 57 and 63 of the box-type grid-like method blocks 52 and 62, the stone 60, or the stone 13 of the foundation 12 and grow. The artificial root 51 becomes a habitat for seafood, a feeding ground, and a spawning ground by the propagation of algae, and the seafood from the inland sea or the outside sea settles on the artificial root 51 and reproduces. The gap between the stones 60 becomes a seafood hideout or a house. In addition, you may make it discharge | release the artificially hatched fry and young shellfish to the artificial root 51.
[0026]
(Embodiment of the second invention)
FIG. 4 shows an example of an aquaculture resource aquaculture type structure of the second invention. The same members as those shown in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.
[0027]
An artificial ridge 65 is provided behind the coastal conservation structure 21 following the coastal conservation structure 21. The artificial root 65 includes a top end 66 and a law part 67.
[0028]
The top end 66 is configured to be spread on the surface of the top end base 16 so that adjacent box-like lattice top end blocks 26 are in contact with each other. As shown in FIG. 5, the box-shaped lattice-shaped top end upper block 26 includes a box-shaped lattice-shaped block base 29 that is constructed of a square steel pipe 30 and reinforced with a round steel 31. A large number of algae sticks 33 curved in an arch shape are attached to the top of the block base 29 to form the algae adherence part 32. The block base 29 is packed with a stone material 34 such as spar as a lump. The law section 67 is provided following the top end 66, and a box-shaped lattice-shaped process block 52 is placed on the law section foundation 18 in a stepped manner.
[0029]
FIG. 6 shows another example of the box-like lattice top edge block. The box-shaped lattice top edge block 27 shown in FIG. 6 has a box-shaped lattice-shaped algae attachment portion 36 provided above the block base 29. Stone material 34 is packed in the block base 29, and lattice frames 37 are attached to the top, middle and bottom of the algae attachment part 36, respectively.
[0030]
The aquaculture resource aquaculture structure configured as described above is constructed as follows.
The scour prevention block 45 is arranged at a predetermined distance from the shore and along the shore. The box-shaped lattice method block 52 is arranged so that the front end surface of the box-shaped lattice method block 52 is in contact with the rear end surface of the scouring prevention block 45, and the stone 13 is moved to the height of the box-shaped lattice method block 52. 11 to form the bottom of the foundation 12. The tip surface of the block base 53 of the next-stage box lattice method block 52 is in contact with the rear end surface of the algae attachment portion 57 of the previous-stage box lattice method block 52 arranged as described above, so that The box-shaped lattice method block 52 is placed on the block base 53 of the previous box-shaped lattice method block 52 and the bottom of the foundation 12. The stone 13 is stacked on the bottom of the foundation 12 up to the height of the box-like lattice block 52 in the next stage. The stacking of the box-shaped lattice method block 52 and the stone 13 is repeated, and these are stacked to a required height. The box-shaped grid top end block 26 is placed on the top end base 16 so that the tip end surface of the box-type grid top end block 26 is in contact with the rear end surface of the algae attachment portion 57 of the uppermost box grid method block 52. Next, the box-shaped lattice is placed on the top end foundation 16 so that the front end surface of the rear-side box-shaped lattice-shaped top end block 26 is in contact with the rear end surface of the front-side box-shaped lattice-shaped top end block 26 sequentially. The top block 26 is laid down.
[0031]
【Example】
An Example demonstrates the fishery resource aquaculture type structure of 2nd invention.
The coastal protection structure 21 is about 50 m away from the shore, and the height of the foundation 12 is about 8 m at the portion of the coastal protection structure 21. The stone material 13 used for the foundation 12 is 30 to 300 kg of medium-sized stone per piece. The height of the coastal protection structure 21 is about 20 m from the seabed 11 (about 6 m from the sea surface), and the length along the shore is about 100 m. Moreover, the gradient before and behind the coastal protection structure 21 is 1 / 1.5. The bottom face of the box-shaped lattice top block 26 is a 3 × 3 m square, the height of the block base 29 is 1 m, and the height of the algae attachment part 32 is 0.5 m. The water depth at the top 66 is about 5 meters, and the width (width in the direction toward the shore) is about 15 m. The bottom surface of the box-shaped lattice method block 52 is a 3 × 3 m square, the height of the block base 53 is 1 m, and the height of the algae attachment portion 57 is 0.5 m. The gradient of the law part 67 is ½. The scour prevention blocks 45 are arranged along the coastal protection structure 21 at about 16 m from the coastal protection structure 21 toward the shore side. The bottom surface of the scour prevention block 45 is a 3 × 3 m square, and the height is 1 m.
[0032]
【The invention's effect】
In this invention, the seawater of the artificial root is fresh and the flow is calm, and the algae attachment part is provided at the top and the lawn part, so that the algae easily propagate. For this reason, the survival rate of fry and larvae increases. In addition, the method block is less likely to be displaced back and forth, the method portion is strong, and the method block positioning work is accurate and easy during construction. Therefore, a strong and durable aquaculture resource aquaculture structure can be easily constructed.
[0033]
Since the block according to the present invention has a steel box lattice frame structure, there is a degree of freedom in the size of a lump such as a stone used for filling material, and even if it is a relatively small stone It can be constrained by a frame, and it can economically produce the weight, strength and shape necessary for aquaculture structure in the sea.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of an aquaculture resource aquaculture structure according to the first invention.
FIG. 2 is a perspective view of a box-type grid method block used in the aquaculture resource aquaculture structure shown in FIG. 1;
FIG. 3 is a perspective view showing another example of a box-type lattice method block.
FIG. 4 is a perspective view showing an example of the aquaculture resource aquaculture type structure of the second invention.
FIG. 5 is a perspective view of a box-shaped lattice-shaped top end upper surface block used in the aquaculture resource aquaculture type structure shown in FIG. 4;
FIG. 6 is a perspective view showing another example of a box-like grid top edge block.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Submarine 12 Foundation 21 Coastal conservation structure 26 Box-shaped lattice top edge block 27 Box-shaped lattice ceiling top block 29 Block base 34 Stone 32 Algae adhesion part 36 Algae adhesion part 51 Artificial root 52 Box lattice method Block 53 Block foundation 57 Algae adhesion part 62 Box-shaped lattice method block 65 Artificial root 66 Top end 67 Method part

Claims (4)

  In the aquaculture resource aquaculture type structure consisting of a coastal conservation structure and an artificial ridge formed behind the coastal conservation structure behind the coastal conservation structure, the foundation in which the artificial ridge is formed by stacking stones And a box-shaped lattice method block in which a box-shaped lattice frame is protruded on the upper surface of the first half of the block base packed with the block, and the algae-attached portion of the box-shaped lattice method block is Located on the shore side, the tip of the next box lattice method block touches the rear end surface of the algae attachment part, and the next box lattice method block is the previous step so that it descends toward the shore. An aquaculture resource aquaculture structure characterized by being mounted in a stepped manner on the block base and foundation of a box-type grid method block.   In an aquaculture resource augmentation type structure consisting of a coastal conservation structure and an artificial ridge formed behind the coastal conservation structure behind the coastal conservation structure, the artificial ridge is a flat surface formed by stacking stones A top base, a method base that is formed by stacking stones with a downward slope toward the shore, and a plurality of rod-shaped members on the upper surface of the block base packed with agglomerates. A box-shaped grid-like top end block provided with an attachment portion, and a box-type lattice method block that forms algae attachment portion by projecting a box-type lattice frame on the upper surface of the first half of the block base packed with a lump. The box-shaped grid top block is laid on the top foundation, the algae attachment part of the box-type grid block is located on the shore side, and the next box lattice on the rear end face of the algae attachment part The tip of the shape block touches so that the slope is descending toward the shore Marine resources Aquaculture type structure, wherein the next box-shaped lattice-like process blocks are placed stepwise on the block base and law unit basis of the preceding box-shaped lattice-like process blocks and. The method for constructing an aquaculture resource aquaculture structure according to claim 1, comprising the following steps.
(B) The first step of placing the scouring prevention block at the required distance from the shore and arranging it along the shore (b) With the front end surface of the box-type lattice method block in contact with the rear end surface of the scouring prevention block The second step of arranging the box-shaped lattice method block (c) The third step of stacking stones on the sea floor to the height of the box-shaped lattice method block to form the bottom of the foundation (d) The previous step arranged in the second step The next box lattice method block is placed in the previous box lattice so that the tip end surface of the block base of the next box lattice method block is in contact with the rear end surface of the algae attachment part of the box lattice method block of The fourth step (e) placed on the block base of the shape method block and the stone piled up in the third step (e) of the box-type lattice method block piled up in the fourth step on the stone piled up in the third step Fifth process (f) of stacking stone to height If Repeat the fifth step, a sixth step of stacking the box-shaped grid method blocks to the required height The method for constructing an aquaculture resource aquaculture structure according to claim 2, comprising the following steps.
(B) The first step of placing the scouring prevention block at the required distance from the shore and arranging it along the shore (b) With the front end surface of the box-type lattice method block in contact with the rear end surface of the scouring prevention block Second step of arranging the box-shaped lattice method blocks (c) Third step (d) of stacking stones on the sea floor to the height of the box-shaped lattice method blocks arranged in the second step (d) Second The next-stage box lattice method block is placed so that the tip end surface of the block base of the next-stage box lattice method block is in contact with the rear end surface of the algae attachment portion of the previous-stage box lattice method block arranged in the process. The fourth step (e), which is placed on the block base of the box lattice method block in the previous stage and the stones stacked in the third step (e) The box shape stacked in the fourth step on the stones stacked in the third step 5th step of stacking stones up to the height of the lattice method block F) The sixth step (g) of repeating the above fourth step and the fifth step and stacking the box-type lattice method blocks to the required height. Boxes on the rear end surface of the algae attachment part of the uppermost box-type lattice method block Place the box-shaped grid top block at the top so that the top face of the top grid block touches the base, and then the rear box on the rear end face of the front box grid top block The seventh step of laying a box-shaped grid top block on the foundation so that the tip of the grid grid top block touches

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