JP3420309B2 - Nesting fish nest block - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a root block fish nest block which mainly secures ecosystem protection in rivers and is particularly suitable for fish.

[0002]

2. Description of the Related Art Among the blocks for embankment such as seawalls, river beds, and near piers, there are, for example, JP-A-63-125718 and JP-A-2-8.
As seen in No. 4824 and others, attempts have been made to have a function as a fish nest. These are designed to allow fish to live inside the block.

[0003]

In recent river management, the conservation of the ecosystem has become more important than ever before. Particularly, the rooting block can be a suitable breeding place for fishes depending on the usage form. Therefore,
There is also a need to stack and use in multiple stages. In addition, in a river, when the water level increases, the flow of water pushes the soil and changes the condition of the river bed.Therefore, it is necessary for the root-blocking block to flexibly adapt to the river bed and to have the strength to overcome the water force. To be done. The present invention seeks to provide a rooting block capable of meeting such demands.

[0004]

As a result of studying the above-mentioned problems, from the top surface of the block, the side surface of a rectangular block body 1 is provided with an intermediate crosspiece 2 capable of connecting a large number of pieces in series and permeable to water in an approximately middle portion. Providing leg portions 3a, 3b protruding downward, each leg portion 3a, 3b
Has developed a root block fish nest block that is provided at a position where it does not interfere with the joining between adjacent blocks and that has connecting holes 4 and 5 between the legs on each leg 3a, 3b.

The water-permeable middle crosspiece portion 2 referred to here is a circular hole, a slit hole, or a lattice-shaped portion through which water and living things can pass. The middle rail portion 2 preferably has a water-permeable slit 6 on the upstream side and a leg mounting portion 7 of the upper block on the downstream side, and the leg portion of the upper block is connected to the block body 1 above the middle rail portion 2. The structure is provided with holes 8.

The leg portions 3a, 3b protruding downward from the upper surface of the block to the side portion are, for example, structures that gradually project outward from the upper portion with an inclination, or project vertically downward to the middle of the leg portion. Further, the position where each leg portion 3a, 3b does not interfere with the joining between the adjacent blocks is, for example, one leg portion.
3a is located at both ends on one side of the block, and the leg part 3b on the other side is provided in the middle of the other side of the block, or the projecting leg parts 3a and 3b are provided alternately between the leg parts. It refers to the case.

Water passage recesses 9 and 10 are provided on the upper edge of the block body 1 on the upstream side and the downstream side, and smooth pseudo stones or main stones are embedded in the upper edge of the block body 1.

[0008]

[Function] The root-consolidating fish nest block of the present invention is the block body 1
Since the water-permeable middle cross-section 2 is provided in the middle part of the block, water can be permeated from above or below the blocks. Moreover, the sand and stones can be placed on the middle cross section 2 to form a good fish nest. Particularly, the water permeable slit 6 is provided on the upstream side and the leg mounting portion 7 of the upper block is provided on the downstream side.
With the structure provided with, the water permeation slit 6 ensures the water permeation function to the upstream side of the block, and the leg mounting portion 7 enables the stacking to the downstream side, which can be replaced with the conventional woodworking floor. Becomes

Since the leg portions 3a, 3b protruding downward from the upper surface of the block are provided on both left and right sides of the block body 1 and the leg portions 3a, 3b are provided at positions not interfering with the joining between the adjacent blocks,
When laying a block in a plane, the legs of one adjacent block enter between the legs of the other block, so it is possible to lay between the blocks, and between the legs provided on each leg 3a, 3b. When the connecting holes 4 and 5 are connected, even if undulations occur in the river bed, the reinforcing bars and bolts passed through the connecting holes 4 and 5 can be used as hinges to flexibly follow the undulations in a plane.

If water passage recesses 9 and 10 are provided on the upper edge of the block main body 1 on the upstream side and the downstream side, a flow path of water flowing from the upstream side to the downstream side is ensured even if they are stacked, and fish etc. Providing a suitable passage. Furthermore, when a pseudo-pseudolite or main stone is embedded on the upper edge of the block body 1, a fish such as ayu that eats moss attached to underwater stones attaches when the stone surface is sharp or rough. It is an environment favored by fish who do not want to eat moss.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view of a rooting fish nest block according to the first embodiment of the present invention, FIG. 2 is a front view, FIG. 3 is a right side view, and FIG. 4 is a left side view. The chain double-dashed line indicates the connected state. This rooting fish nest block is a square shape in which a large number of block main bodies 1 can be connected in series, and water and small fish can pass through the water-permeable slits 6 of the group holes in the upper and lower middle portions in the thickness direction. There is a middle cross section 2. The water-permeable slit 6 is provided on the upstream side of the middle rail portion 2, and on the downstream side thereof, a placing portion 7 on which the legs of the slightly flat upper block rest is placed. A connection hole 8 for connecting the leg portion of the upper block is provided in the block body 1 above the middle rail portion 2 near the mounting portion 7. Water passage recesses 9 and 10 are provided at the upper edge of the block main body 1 on the upstream side and the downstream side to ensure a flow path of water flowing from upstream to downstream even when stacked.

On both left and right sides of the rectangular block body 1, leg portions 3a, 3 are inclined so that the lower part thereof protrudes from the upper surface of the block.
b is provided. In order to make the positions of the legs 3a and 3b that do not interfere with each other in the joining between the adjacent blocks, as shown in FIG. 1, the left leg 3a is provided open to both ends, and the right leg 3a is provided. 3b is provided in the middle so that it is located between the left legs. The left leg 3a is provided with a connecting hole 4 and the right leg 3b is also provided with a connecting hole 5. Each connecting hole is at the same height. Natural stones are laid on the top surface to make it easier for moss in the water to adhere, making it a structure preferred by fish.

FIG. 5 shows the state of use of the root-blocking fish nest block.
It was shown to. FIG. 5 is a vertical cross-sectional view showing a state in which a large number of pieces are laid side by side in a planar state and also stacked on the upper part in multiple stages. Each of the root-blocking fish nest blocks is laid one by one in a flat state, and the natural stones 11 or earth and sand are filled on each of the middle cross-sections 2. At this time, when the root-fixing fish nest block is stacked on the upper stage, natural stones are filled in, leaving the portions on which the legs 3a rest. A space of about 20 to 30 cm can be provided between the blocks by stacking the blocks. The upper block is the middle beam 2 of the lower block
Since the bolts can be bolted by using the connecting holes 8 provided above, the connected blocks are integrated vertically and horizontally by bolts or the like. Each block allows fish to live, and blocks stacked above the water level (WL) are filled with earth and sand to enable vegetation of plants. The roots of the plant grow downward, giving the fish a nice home. It also contributes to water purification.

FIG. 6 is a plan view of the second embodiment of the present invention, and FIG.
Is a front view. In this example, a large number of circular holes are provided in the middle cross section 2. On the upstream side (left side) of the side surface of the block body 1, the legs 3a are formed almost vertically to the ground contact portion.
The leg portion 3b is provided at a position that does not interfere with the joining between adjacent blocks, and the leg portions 3a and 3b are provided with connecting holes 4 and 5, respectively. The upper and lower edges of the block body 1 are provided with water passage recesses 9 and 10 on the left and right sides, and water passage recesses 12 and 13 are also provided on the front and rear to eliminate the directionality, and even when stacked, the water passage recesses 9 and 10 are sure to flow from upstream to downstream. A flow path for flowing water is secured.

[0015]

Since the present invention has the above-mentioned structure, it has the following features. Since the stone stone (natural stone) layers and voids are constructed alternately,
A habitat for fish is secured. The blocks are connected to the left, right, top and bottom in a flexible manner, so that they will not be scattered apart by the impact of water or rocks. Column construction can be performed according to the water level, and it is possible to design according to the site. By filling the inside of the block with earth and sand, vegetation such as willows is possible, and it is possible to provide a multi-natural rooted fish nest.

[Brief description of drawings]

FIG. 1 is a plan view of a root-consolidated fish nest block according to the first embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a right side view of the same.

FIG. 4 is a left side view of the same.

FIG. 5 is a vertical cross-sectional view showing a state in which a large number of pieces are laid side by side and also stacked on the upper part in multiple stages.

FIG. 6 is a plan view of a root-consolidated fish nest block according to the second embodiment of the present invention.

FIG. 7 is a front view of the same.

[Explanation of symbols]

1 block body 2 Middle pier 3a legs 3b leg 4 connection holes 5 Connection hole 6 water-permeable slit 7 Upper block leg rest 8 Upper block leg connection hole 9 water flow recess 10 Water flow recess 11 natural stones 12 Water recess 13 Water flow recess

(72) Inventor Jiro Okamoto 630 Kaida, Ochiai-cho, Maniwa-gun, Okayama 1 Landes Co., Ltd. (72) Noriyuki Mikan 630, Kaita, Ochiai-cho, Maniwa-gun, Okayama 1 Landes Co., Ltd. ( 56) References Japanese Patent Laid-Open No. 59-52008 (JP, A) Actually open 3-86124 (JP, U) Actually open 61-93517 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02B 3/14 A01K 61/00 313

Claims (2)

(57) [Claims] 1. A is lower than the block top surface to the side of and a large number is possible provided continuously rectangular block body provided with a crosspiece (2) in which can be water-permeable substantially in the middle part (1) projecting legs ( 3a) and (3b) are provided, and one leg (3a) of each leg (3a) and (3b) is a block.
It is located at both ends on one side and the leg part (3b) on the other side is
Legs (3a), (3
b) are alternately placed between the legs, and are provided at a position where they do not interfere with the joint between adjacent blocks, and each leg (3a), (3b)
A root-blocking fish nest block characterized in that holes (4), (5) for connecting between legs are provided in the. 2. A large number of units can be arranged in series, and a transparent member can be provided almost in the middle.
Side of a rectangular block body (1) with a water-carrying crosspiece (2)
Legs (3a) and (3b) protruding downward from the top surface of the block
Install each leg (3a), (3b) to join the adjacent blocks.
It is installed in a position where it does not cross over, and the legs (3a) and (3b) are placed between the legs.
A block provided with connecting holes (4), (5), in which the middle rail (2) has a water-permeable slit (6) on the upstream side and a leg mounting portion (7) of the upper block on the downstream side. A root-consolidating fish nest block, characterized in that the block body (1) above the middle crosspiece (2) is provided with leg connecting holes (8) of the upper block.