JPH08228631A - Nesting hole apparatus for spawning of fishes - Google Patents

Abstract

PURPOSE: To carry out protection of living and propagation of a giant salamander, etc., which is a natural monument in improvement of river, maintenance, etc., of drain. CONSTITUTION: The lower disc 4 made of an unglazed pottery is put on a dish-like disc 1 made of concrete and a cylindrical pipe 6 made of the unglazed pottery is put thereon and the circumference is covered with concrete 7 and the upper disc 8 made of unglazed pottery is put on the cylindrical pipe 6 and the upper inverted dish-like pan 10 made of concrete is put thereon and an article formed by such the process is installed in the rear of a revetment 12. The halfway of the cylindrical pipe 6 is connected to the surface of revetment by an inducing ceramic pipe 13 and the surface of the revetment 12 is made to communicate with the water hole 3 of the dish-like panel 1, the surface of the revetment 12 and a vent hole 11 of the upper inverted dish-like panel 10.

Description

Detailed Description of the Invention

[0001]

The present invention relates to, for example, river improvement,
The present invention relates to a fish-producing ovary hole device, which is installed on the back of a seawall for the purpose of protecting the habitation and reproduction of natural monument, such as the giant fish, etc., when developing drainage channels. .

[0002]

2. Description of the Related Art Conventionally, for example, the nesting hole for the Osansho fish and the like is mostly a natural nest, and natural stones are used in the rehabilitation of rivers and the development of drainage channels in the area where Osansho fish inhabit. There is a block made of a concrete block having a cylindrical or box-shaped cavity provided with an entrance, but there are various problems such as that the entrance is closed by the influence of flowing water. Also, in the case of concrete blocks, some fish have strong contact habits, and some of them cannot be said to be comfortable habitats due to the concrete contact surface. There are some that ensure an environment suitable for fish nests and spawning of fish, etc., but these are for small fish and mollusks such as squid, like large fish However, it was not suitable for the largest organisms among the amphibians with strong contact habits.

[0003]

[Problems to be Solved by the Invention] In recent years, river improvement and drainage development have reached the middle and higher waters of rivers inhabited by Osho fish. The shrinking and destruction of the place where fish live is threatening extinction. Since variegated fish have been designated as a national special natural monument, and there are various restrictions on the capture and movement of variegated fish, construction of construction in waters where variegated fish live is subject to major restrictions. is recieving. Due to these restrictions, it is necessary to secure the space necessary for the breeding and spawning of the giant fish in order to appropriately rehabilitate the river and construct drainage channels while protecting the breeding and breeding of the giant fish. Is.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned inconvenience. Firstly, focusing on the contact habit of the sardine fish, the contact surface is relatively smooth, Moreover, we decided to use breathable unglazed ceramic material. Secondly, considering the structure of the river bank,
Structurally high strength is required to be installed behind the revetment. The structure is that the lower disk made of unglazed ceramics is placed on the concrete plate, the cylindrical tube made of unglazed ceramics is placed on it, and the circumference of the cylindrical tube is covered with concrete, and on the cylindrical tube. Place the upper disc made of unglazed ceramics, place the inverted dish on the concrete top on it, and place the one thus formed on the back of the revetment, in the middle of the cylindrical pipe and on the revetment. The surface is connected by an induction porcelain pipe, and the water hole of the dish plate and the surface of the revetment, and the ventilation hole of the upper inverted plate and the surface of the revetment are connected by a connecting pipe or the like.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG.
FIG. 1 is an overall cross-sectional view of the present invention, wherein 1 is a concrete dish-shaped plate as shown in FIGS. 4 and 5, in which an upper step portion 2 is formed and a lower water passage hole 3 is provided. . Reference numeral 4 denotes a lower disk made of unglazed ceramic, and a large number of through holes 5 are formed therein.
It is placed on a step 2 of a concrete dish 1.
Reference numeral 6 denotes an unglazed porcelain cylindrical tube, around which concrete 7
And placed on a concrete dish 1.
Reference numeral 8 denotes an upper disc made of unglazed porcelain, which has a large number of through holes 9 and is placed on the cylindrical tube 6. Reference numeral 10 denotes an upper inverted dish-shaped plate made of concrete, which is placed on a cylindrical pipe 6 whose periphery is covered with concrete 7. A vent 11 is provided in the upper inverted dish 10. The so-formed thing is installed on the back of the revetment 12, and the middle of the cylindrical pipe 6 and the surface of the revetment 12 are connected by the induction ceramic pipe 13,
The connection pipe 14 is inserted into the water hole 3 of the pier, the surface of the revetment 12 is communicated with the lower part of the cylindrical pipe 6, and the connection pipe 15 is inserted into the ventilation hole 11 of the upper inverted dish 10 with the connection pipe 15, and the surface of the revetment 12 When,
It communicates with the upper part of the cylindrical tube 6. The gravel 16 is laid on the lower disk 5. 17 is a concrete foundation.

[0006]

Since the present invention has the above-mentioned structure, in this construction, a foundation concrete foundation 17 is applied to the back of a seawall of a river in a habitat of a scorpion fish, and then, as shown in FIGS. The shown one is placed, and the induction porcelain pipe 13 is supported on a gravel foundation, connected to the cylindrical pipe 6, and opened in the seawall 12,
A connecting pipe 15 is connected to the ventilation hole 11 to open a hole on the surface of the revetment 12, and a connecting pipe 14 is also connected to the water hole 3 to connect the revetment 1
It is constructed by opening holes on the two surfaces.

[0007]

The present invention is installed on the back of a revetment surface of a river or the like. The use of unglazed pottery cylindrical tube 6 and induction pottery tube 13 does not cause any problems in the habitat environment inside and outside of the fish, the entrance and exit are narrow and the inside has a certain living space, and the cylindrical tube 6 is made of concrete. Since it is covered with 7,
It is assumed to have breathability,
It is possible to secure a living space suitable for breeding, and there is no problem in inhabiting, breeding and protection of Osho fish even if the river is renovated, and some of the materials are made of unglazed pottery However, since the periphery is reinforced with concrete, it has the effect of being able to be firmly constructed as a whole. In addition, by directing the induction ceramic tube 13 serving as an entrance to the entrance downstream, intrusion of water is prevented, and entry / exit of a large fish from the downstream direction becomes easy.

[Brief description of drawings]

FIG. 1 is a sectional view of the entire invention.

FIG. 2 is a partial sectional view.

3 is a cross-sectional view of FIG.

FIG. 4 is a plan view of a concrete dish-shaped plate.

FIG. 5 is a sectional view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dish-plate 3 Water-flow hole 4 Lower disk 6 Cylindrical pipe 7 Concrete 8 Upper disk 10 Upper inverted-dish plate 11 Vent hole 12 Seawall 13 Induction ceramic tube

Claims (1)

[Claims] 1. A lower disk 4 made of unglazed porcelain is placed on a concrete dish 1 and a cylindrical tube 6 made of unglazed porcelain is placed thereon. The periphery of the cylindrical tube 6 is covered with concrete 7. An upper disc 8 made of unglazed porcelain is placed on the cylindrical tube 6, and an upper inverted dish 10 made of concrete is placed thereon, and the thus formed thing is placed on the backside of the seawall 12. And cylindrical tube 6
And the surface of the revetment 12 are connected by an induction ceramic tube 13, and the surface of the revetment 12 and the water hole 3 of the dish-shaped plate 1, and the surface of the revetment 12 and the ventilation hole 11 of the upper inverted dish 10 are connected. A fish spawning ovary device characterized by communication.