JPH1096221A - Fish cave block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a box-like fish cave block for a refuge gentle to fishes by a simple structure. SOLUTION: In a box-like fish cave block 1, a projection 8 is formed at one end of the upper wall 5 in the substantial entirety of a width direction, and one or more positioning grooves 9 are made at the lower portion of left and right side walls 3; furthermore, an angular opening is defined on at least one of box-shaped walls. Also, a bottom wall of the fish cave block is removed and a rising wall 7 is formed on the other end of the upper wall 5. As such, since a fish cave can be formed on the revetment, the function of a fish nest can be enhanced, so that a river side wall face portion results in an appropriately dark place where fish can get rid of stress. In addition, inclination slope can freely be executed in a wide range thereof. Further, the revetment is a step-structure, even in the accident of falling, by the front window, it is helpful in drawing prevention in the rapid flow of water and can be expected in rescue work. Still further, the large opening (window) has a sufficient size for inspection or cleaning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to the enrichment of life,
Responsibility for the design of river revetments, road side walls, bridges, etc. is increasing as the voices are being reviewed and the concerns of residents are increasing, and it is one of the causes of water pollution in rivers and waterways. In order to improve the beauty of the river bank along with the desire to change the consciousness of the local residents, the distance between the river and the people is reduced, the awareness of nature protection is fostered, the pollution of drainage is improved, and the Must be considered as a local government to lower costs,
It relates to a fish sinus block that has achieved hydrophilicity.

[0002]

2. Description of the Related Art According to the prior art, seawalls for rivers are constructed with building blocks and upholstery blocks, and the seawalls with these building blocks and upholstery blocks are entirely covered with concrete. Alternatively, there is an "ecosystem preservation block in which a front wall and a rear wall are provided with stairs on the front wall of a side-surface rhombic hollow block inclined backward" (see Japanese Utility Model Laid-Open No. 4-50430).

[0003]

However, among the prior arts shown above, seawalls with concrete-covered building blocks or upholstery blocks are environments in which fish are unlikely to inhabit, and when floods and sudden There was a problem that there were no fish dwellers in the basin.

Japanese Patent Laid-Open Publication No. 4-50430 discloses a special shape in which a step portion is provided on a front wall of a side rhombic hollow block in which a front wall and a rear wall are inclined rearward because of stacking while being inclined. There was a problem that the special formwork had to be prepared and constructed for the ecosystem conservation block.

[0005] In view of such circumstances, the present invention is a box-shaped fish cave block that solves the above-mentioned disadvantages of the prior art and has a simple structure and is a fish-friendly hideaway for fish. In one specific embodiment, a protrusion is provided at one end of the upper wall in substantially the entire width direction, one or more positioning grooves are provided at the lower portion of the left and right side walls, and at least one of the box-shaped walls is provided. It is an object of the present invention to provide a fish sinus block in which an opening of a square hole is formed.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and employs the following technical means. According to the first aspect of the present invention, in the box-shaped fish cave block, a protrusion is provided at one end of the upper wall in substantially the entire width direction, and one or more positioning grooves are provided at the lower portion of the left and right side walls. A technical means of forming an opening of a square hole in at least one of the walls is adopted.

[0007] According to the second aspect of the present invention, the first aspect is provided.
In the fish cave block described, a technical means of removing the bottom wall was adopted.

According to the third aspect of the present invention, in addition to the first or second aspect, a technical means of forming a rising wall at the other end of the upper wall is employed.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention provides a box-shaped fish cave block, in which one end of an upper wall is provided with a projection in substantially the entire width in the width direction, and one or more positioning grooves are provided in lower portions of left and right side walls. A fish cave block formed with an opening of a square hole in at least one of the box-shaped walls. A cobblestone in the block secures a comfortable habitat for small fish, shrimp, crabs, etc. About 30 to 20% of the wall surface is open, natural light is appropriately projected to promote the propagation of micro-organisms, and since the shape is box-shaped, it is structurally strong and is not damaged or damaged during construction. Since it is less resistant to earthquake disasters and the like, damage can be reduced, and construction can be performed freely within a gradient of 3 minutes to 10%.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention is shown in FIGS.
It will be described in detail based on. First, a specific structure will be described with reference to FIGS.

A fish cave block 1 having a box-shaped cavity, having a front wall 2, left and right walls 3, a rear wall 4, and an upper wall 5, and the front wall 2 has a relatively large square opening 6 The left and right walls 3 and the upper wall 5 are formed with openings 6 having small square holes. A rising wall 7 is formed at an end of the upper wall 5 on the front wall 2 side, and a protrusion 8 is formed at the other end over substantially the entire length. Further, one or more grooves 9 are formed at the lower ends of the left and right walls 3 so as to match the required stacking gradient, and the upper walls 5 are formed in the grooves 9.
The projections 8 are fitted to help the inclination alignment and slip prevention.

An example in which the fish cave blocks according to the first embodiment described above are stacked up in steps will be described with reference to FIGS.

A foundation 10 is installed on the riverbed, and the foundation 10
The fish cave blocks 1 are stacked on each other, and the projections 8 on the upper wall 5 of the bottom fish cave block 1 are adjusted according to the required inclination angle.
Then, it is engaged with the groove 9 formed in the lower part of the left and right walls 3 of the fish cave block 1 to be stacked next. This is repeated to build up as shown in FIGS. Then, as can be understood from FIG. 5, each stage is shifted and stacked on a different level. In addition, it is also possible to pile up the fish cave blocks 1 of each stage in series without shifting.

By filling the cobblestone into the revetment building blocks formed by the fish cave blocks 1 stacked as described above, a comfortable habitat for small fish, shrimp, crab and the like is secured, and Quicksand and organic matter settle down at the bottom of the boulder, forming a micro-organism bed that feeds on small fish and other foods, creating a good spawning bed. In addition, the flow velocity decreases near the cobblestone to provide a swimming rest area for small fish, and the gap between the cobblestones is a resting area for small fish because fresh oxygen is supplied by a gentle flow. The intermittent walls generate mini-turbulence to promote the exchange of water inside and outside the block, and also reduce the flow velocity inside the block to become a shelter for fish during floods, and usually have poor running up power. It becomes a fishway for fry and helps run up.

FIG. 6 shows a modification of the first embodiment. The upper surface of the foundation 10 is inclined, and the fish cave block 1 from which the rising wall 7 provided at the end of the upper wall 5 on the front wall 2 side is removed is piled up as a seawall.

Next, a second embodiment will be described with reference to FIGS. The difference from the first embodiment is that a bottom wall 11 is provided, and all other points are the same as those of the first embodiment.

Next, a third embodiment will be described with reference to FIGS. In the third embodiment, the left and right walls 3 are removed from the fish cavity block 1 of the first embodiment, and the lower end of the front wall 2 of the fish cavity block 1 on which the projection 8 of the upper wall 5 is stacked can be engaged. Thus, two are provided. Since the left and right walls 3 are not further provided, there is no portion for supporting the rear wall 4, and the foundation 10 is cast on site. The other points are the same as those of the first embodiment, and the detailed description is omitted.

As a last embodiment, a fourth embodiment will be described with reference to FIGS. This fourth embodiment is similar to the first embodiment.
The projection 8 of the upper wall 5 and the groove 9 of the left and right walls 3 are not formed from the fish cave block 1 of the embodiment, and the inclination angle can be arbitrarily set. The other points of the fourth embodiment are the same as those of the first embodiment, so that the detailed description is omitted.

As described above, as described in the first to fourth embodiments, a box-shaped (box-shaped) or portal-shaped fish cave block is provided with an opening of a square hole, and is stacked in a stepwise manner to form a hollow portion. Serves as a cave for fish, shrimp, crabs, shells and the like.

If the surface of the fish cave block is processed so as to be in harmony with nature, the landscape can be further improved.

[0021]

According to the present invention, as a result of employing the above configuration,
The following effects can be obtained. (1) Since a cave for fish can be formed on the revetment, the function of the fish nest can be enhanced. (2) The wall surface on the river side is a place for relieving fish stresses by ensuring appropriate darkness. (3) The inclination gradient can be freely set in a wide range. (4) Since the revetment has a stacked structure, the window on the front can be used as a clue even in the event of a fall, etc., which helps prevent flooding even when the flow velocity is high, and can be expected to save lives. (5) The large opening (window) is large enough for internal inspection and cleaning.

[Brief description of the drawings]

FIG. 1 is a side view of a fish cave block according to a first embodiment of the present invention.

FIG. 2 is a front view of a fish cave block according to the first embodiment.

FIG. 3 is a plan view of a fish cave block according to the first embodiment.

FIG. 4 is a side view showing a state where the fish cave blocks of the first embodiment are stacked.

FIG. 5 is a front view showing a state in which the fish cave blocks according to the first embodiment are staggered.

FIG. 6 is a side view showing an embodiment of stacking with a gradient in a modification of the first embodiment.

FIG. 7 is a side view of a fish cave block according to a second embodiment of the present invention.

FIG. 8 is a front view of a fish cave block according to the second embodiment.

FIG. 9 is a plan view of a fish cave block according to the second embodiment.

FIG. 10 is a side view showing a state where the fish cave blocks of the second embodiment are stacked.

FIG. 11 is a front view showing a state in which the fish cave blocks according to the second embodiment are staggered.

FIG. 12 is a side view of a fish cave block according to a third embodiment of the present invention.

FIG. 13 is a front view of a fish cave block according to the third embodiment.

FIG. 14 is a plan view of a fish cave block according to the third embodiment.

FIG. 15 is a side view showing a state where the fish cave blocks of the third embodiment are stacked.

FIG. 16 is a front view showing a state in which the fish cave blocks according to the third embodiment are staggered.

FIG. 17 is a side view of a fish cave block according to a fourth embodiment of the present invention.

FIG. 18 is a front view of a fish cave block according to the fourth embodiment.

FIG. 19 is a plan view of a fish cave block according to the fourth embodiment.

FIG. 20 is a side view showing a state where the fish cave blocks of the fourth embodiment are stacked.

FIG. 21 is a front view showing a state in which fish cave blocks according to the fourth embodiment are stacked in a stepped manner.

[Explanation of symbols]

 1 ‥‥ fish cave block 2 ‥‥ front wall 3 ‥‥ left and right wall 4 ‥‥ rear wall 5 ‥‥ upper wall 6 ‥‥ opening 7 ‥‥ rising wall 8 ‥‥ projection 9 ‥‥ groove 10 ‥‥ foundation 11 ‥‥ Bottom wall

Claims (3)

[Claims] 1. A box-shaped fish cave block,
At one end of the upper wall, a projection is provided in substantially the entire width in the width direction, at least one positioning groove is provided at the lower portion of the left and right side walls, and a square hole opening is formed in at least one of the box-shaped walls. A fish cave block characterized by the following. 2. The fish cave block according to claim 1,
A fish cave block with the bottom wall removed. 3. The fish-cavity block according to claim 1, wherein a rising wall is formed at the other end of the upper wall.