JPH09125343A - Protector for aquatic organism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To insure and protect the living territory of aquatic organism by providing this protector in a waterway, so that the aquatic organism can live even in a waterway, a river, and the like of which the floor faces and wall faces are hardened by concrete. SOLUTION: A bent part 1a is provided on the upper edge of a plate, and supporting pins 2 are fitted to a little lower part of it. The supporting pin 2 is projected on the back side of the plate 1, so as to make the plate 1 in slanting state. A flexible sheet 3 is stuck to the lower end part 1b of the plate 1. The flexible sheet 3 is extended in front of the plate 1, and also extended sideway so as to provided projecting parts 3c. The fitting side of the flexible sheet 3 is installed so as to face to the upper stream of a waterway. Hereby, it does not move on the floor face of the waterway and it is stabilized. The living space for aquatic organism is insured on the back side of the plate 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater creature protector, and more particularly to a novel protector that can be installed in a waterway to secure a habitat for underwater creatures.

[0002]

2. Description of the Related Art Conventionally, in various waterways such as rivers and waterways for agriculture, for the purpose of preventing flood damage and improving the agricultural environment, maintenance projects for fixing the floor and wall surfaces of the waterways with concrete or the like have been promoted. It was Due to the progress of such inland water system maintenance projects, water damage has been prevented and agricultural water can be secured. However, such maintenance is a short-term, local measure, and from a long-term and wide-area perspective, it causes a decrease in the water retention capacity of the land, deterioration of the biological environment, etc., and it is sudden or abnormal. It has been pointed out that if a disaster occurs, it may bring about a larger disaster.

[0003]

Among the above-mentioned drawbacks of the maintenance project, the situation in which organisms are less likely to inhabit due to the maintenance of waterways is the most prominent and serious problem. There is a problem that the natural purification capacity of the inland water system is drastically reduced and the environment is further deteriorated due to the decrease. In particular, when the floor and wall surfaces of a waterway are all covered with artificial materials such as concrete, living organisms can hardly live, and most seafood excluding some plants such as algae is said to die. There is a problem.

As measures against these, there are methods of providing unevenness on the floor and wall surfaces of the waterway to provide an environment for plants and the like, or to reduce the speed of water flow in order to improve the habitat of seafood. , In fact, it has little effect, and only some organisms can live in harsh environments. In addition, when the amount of water flowing through the waterway is small, there is no underwater space in which fish and shellfish can inhabit, and it is impossible to expect the fish and fish to breed.

Therefore, the present invention solves each of the problems described above. The problem is to construct a new protector which can easily obtain a habitat for aquatic organisms by installing it in a waterway. It is to establish a situation in which organisms can reproduce even in such a harsh environment, and to improve the environment from a global perspective.

[0006]

[Means for Solving the Problems] Means taken by the present invention for solving the above-mentioned problems are an aquatic organism protective equipment which is installed in a waterway to secure and protect a living area of aquatic organisms. A plate-shaped member arranged along the water flow flowing in the water channel, and a plate-shaped member projectingly formed on the bottom surface side of the plate-shaped member, with the plate-shaped member on the support surface in the water channel with the downstream side of the water channel upward. And a flexible sheet-shaped portion connected to an end of the plate-shaped member arranged on the upstream side of the water channel.

According to this means, the flexible sheet-like portion can be brought into close contact with the supporting surface, and the protruding supporting portion is supported by the weight of the plate-shaped member and the pressure of the water flow applied to the plate-shaped member. By pressing, it is possible to maintain its position without flowing or rising in the water channel. A protected space with less water flow is formed on the back side of the sloping plate-like material, where aquatic life can live.

Further, it is preferable that the flexible sheet-shaped portion is provided with an overhanging portion formed so as to extend a predetermined amount outside the side surface portion of the plate-shaped member. According to this means, since the flexible sheet-shaped portion extends in the width direction of the plate-shaped material, the area of the flexible sheet-shaped portion is increased and the installation stability is improved. Since the overhanging portion is provided on the side of the plate, the plate-like material is prevented from being lifted or moved due to the entrainment of the water flow from the side.

Further, the flexible sheet-like portion is adhered to the front and back surfaces of the end portion of the plate-like material by facing two sheets so that they are adhered to each other in a portion outside the intervening range of the plate-like material. It is preferable to configure the above. According to this means, the flexible sheet-shaped portion can be firmly bonded to the plate-shaped material, and the risk of the bonded portion between the plate-shaped material and the flexible sheet-shaped portion being peeled off by the water flow is reduced. Moreover, the flexible sheet-shaped portion can be easily formed by using the resin adhesive tape.

Further, it is preferable that an opening is partially provided in the middle of the inclination of the plate-shaped member. As a result, the water flow partially passes through the openings of the plate-shaped material, so that some water flow also flows to the back surface side of the plate-shaped material, and the earth and sand flowing from the upstream side to the back surface side of the plate-shaped material. Can be suppressed.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of an aquatic organism protective equipment according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing the overall structure of the present embodiment, and FIG. 2 is a vertical sectional view showing the configuration of the same embodiment.

In this embodiment, a plate-like material 1 made of various materials such as stainless steel and hard resin, and two pieces attached to one end of the plate-like material 1 and projecting to the back side of the plate-like material 1 are provided. The support pins 2 and 2 and the flexible sheet 3 attached to the end portion 1c of the plate-shaped member 1 and extending to the periphery are roughly configured.

The plate-shaped member 1 has support pins 2 and 2 as described later.
Is arranged so as to incline at a predetermined angle (for example, 20 degrees) with respect to the mounting surface, and a bent portion 1a bent slightly downward is provided at the upper end of the inclined plate-like material 1. . Further, on the surface of the plate-shaped material 1, a shallow long groove 1d extending in the inclination direction is entirely formed.

At a portion slightly below the bending portion 1a of the plate-shaped material 1, the support pins 2, which project from the back side of the plate-shaped material 1, are provided.
2 are installed. The support pins 2 and 2 are fixed pins 4 which are press-fitted into mounting holes (not shown) formed in the plate-shaped member 1.
Is fixed by engaging the head portion 2a thereof. The tip 2b of the support pin 2 is slightly tapered.

On the other hand, the lower end portion 1 of the plate-like material 1 which is inclined and arranged.
A flexible sheet 3 made of resin is attached to b.
This flexible sheet 3 has a lower end portion 1b as shown in FIG.
Two resin sheets 3a and 3b are adhered to both front and back sides of the sheet, and these resin sheets 3a and 3b are adhered to each other when they come out from the lower end portion 1b of the plate-shaped material 1 to the upstream side to form one sheet. Has been formed. The flexible sheet 3 has a width wider than that of the plate-shaped material 1, and is provided with overhanging portions 3c and 3c which are projected on both sides of the plate-shaped material 1.

In the above-described embodiment, the flexible sheet 3 is installed on the floor surface 10a of the water channel 10 in a posture in which the mounting portion of the flexible sheet 3 faces the upstream side of the water channel 10 shown in FIGS. At this time,
The support pins 2 hold the plate-shaped material 1 in an inclined state of about 20 degrees with respect to the floor surface 10a. In this state, the bent portion 1a is formed to be substantially horizontal to the floor surface 10a.

Further, the flexibility of the flexible sheet 3 allows the flexible sheet 3 to be brought into close contact with the floor surface 10a of the water channel 10 almost exactly, and the projecting portions 3 projecting on both sides thereof.
c, 3c are wall surfaces 10b, 10 on both sides of the floor surface 10a.
It is possible to extend up to the boundary portion with b and to adhere it along the curved surface portion of the boundary portion.

In this embodiment thus installed, the flexible sheet 3 on the upstream side is in close contact with the floor surface 10a of the water channel 10 so that the water flow does not flow under the flexible sheet 3. ing. On the other hand, the water flow flowing from the upstream flows to the downstream side along the surface of the flexible sheet 3 and the surface of the plate-shaped material 1, and finally to the downstream via the surface of the bending portion 1a.

Therefore, below the back surface of the plate-shaped member 1 inclined by the support pins 2 and 2, as shown in FIG.
Is formed. In this protected space A, even if the flow velocity of the water flow in the water channel 10 is considerably high, the flow velocity is low and the water is stagnant, so that seafood, aquatic plants and other aquatic organisms can be hidden and propagate there. it can.

In the above embodiment, as shown in FIG. 3, the width of the plate-shaped material 1 is formed smaller than the width of the water channel 10, and the protruding portions 3c, 3c of the flexible sheets 3 on both sides of the plate-shaped material 1 are formed. Above the above, gaps B, B that do not prevent the passage of the water flow are formed. Due to the existence of the gap B, the fishway is secured even if the water level in the waterway 10 is lowered.

Refraction part 1a formed on the upper end of the plate-shaped material 1
Means that the water flow guided by the inclination of the plate-shaped material 1
It is formed in order to make it difficult to generate a vortex at the end of the.
The long groove 1d formed on the surface of the plate-shaped material 1 is formed to smoothly guide the water flow to the downstream side.

Since the support pin 2 projects from the back surface side of the plate-shaped material 1 and its tip 2b is formed to be tapered or pointed, the weight of the plate-shaped material 1 and the pressure of the water flow are locally concentrated. By pressing the floor surface 10b with, slippage is less likely to occur, and thus positional deviation is less likely to occur, and the protector is prevented from flowing downstream in the water channel. If the support pin itself is formed in a thin shape to some extent, there is no problem even if the tip portion 2b is not particularly thin.

The flexible sheet 3 has the water channel 1 because of its flexibility.
Since it can be brought into close contact with the floor surface 10a of 0 and the water flow is prevented from passing under the flexible sheet 3, it is possible to prevent the protective equipment from being lifted up or flowed to the downstream side. In particular, since the flexible sheet 3 is formed with overhanging portions on both sides, it is possible to stick to the floor surface 10a by utilizing a wider range of water pressure and water flow pressure, and the water flow is on the side of the plate-shaped material. It prevents the plate-shaped material from floating or moving by entering from the one side to the back side.

In this embodiment, when the water level in the water channel 10 is considerably higher than the height of the plate-shaped member 1 (water level C in the figure), as shown in FIGS. Protecting space A and fishway B can be secured by blocking. In addition, even when the water level is almost the same as or lower than the height of the plate-shaped material 1, the water flow flows on the surfaces of the flexible sheet 3 and the plate-shaped material 1 and flows down from the bending portion 1a like a waterfall. However, due to this waterfall, the water level in the vicinity of the protected space A rises rather, and a favorable environment for aquatic life can be provided.

When the above-described embodiment is used, in a place where a water stream containing a large amount of earth and sand flows from the upstream, earth and sand may be deposited in the protective space A on the back surface of the plate-shaped material 1, which may cause long-term If it is installed in, the protected space A may be filled with earth and sand. Therefore, as shown in FIGS. 5 and 6, it is preferable to provide a plurality of elongated hole-shaped openings 5 at intermediate positions on the inclined surface of the plate-shaped material 1. As shown in FIG. 6, a part of the water flow also flows through the opening 5 to the back surface side of the plate-shaped material 1, and a water flow from the protection space A to the downstream side is generated. Sediment accumulation is suppressed.

In the above embodiment, the bent portion 1a is provided at the upper end of the flat plate-shaped material 1, but the flat plate-shaped material may be used as it is without providing the bent portion 1a, or the bent portion 1a is considerably long. You may form. Further, it is sometimes preferable to use a plate-shaped material having a shape undulating in the water flow direction or a plate-shaped material having irregularities because the flow velocity of the water flow can be relaxed.

Although a pair of support pins 2 are provided in the above embodiment, one support pin 2 may be provided as long as it has a width and the plate-like material is stable, or 3 to improve the stability. More than one book may be provided. Further, instead of the support pins, the integrally formed leg portion may be formed on the back surface of the plate-shaped member.

The flexible sheet 3 is adhered to the lower end portion 1b of the plate-shaped material 1, but when the plate-shaped material is formed by resin molding, etc., it is only within a predetermined range on the lower end side of the plate-shaped material 1. The plate-shaped member and the flexible sheet may be integrally formed by partially forming the plate. Further, the flexible sheet 3 is formed by laminating two sheets, which are adhered to both front and back sides of the lower end portion 1b of the plate-shaped material 1,
The sheet may be simply attached to either the front or back of the lower end 1b. However, in this case, since the bonded end portion between the sheet and the end portion of the plate-shaped material is exposed, there is a risk that the bonded portion may be peeled off by the water flow. The above embodiment is also excellent in terms of preventing this peeling.

Further, although the above embodiment is installed in the water channel 10 having a width slightly wider than the width of the plate-shaped material, it is installed in a river having a width much larger than the width of the plate-shaped material. Also has the same effect. Further, the length of the plate-shaped material in the water flow direction can be arbitrarily formed. In addition, as a result of installing the present embodiment in an agricultural waterway or river for a period of one month or more and performing a test, small aquatic organisms start to breed in a few days, and at the time of abnormal water increase such as typhoon attack. It has been proved that it will not be washed away.

[0030]

As described above, according to the present invention, the flexible sheet-shaped portion can be closely adhered to the supporting surface, and the protruding supporting portion has the weight of the plate-shaped member and the inclined plate-shaped member. Since the support surface is pressed by the pressure of the water flow applied to the material, the position can be maintained without being swept or lifted in the water channel. A protected space with less water flow is formed on the back side of the sloping plate-like material, where aquatic life can live.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an aquatic organism protective equipment according to the present invention.

FIG. 2 is a longitudinal sectional view showing the structure of the embodiment.

FIG. 3 is a cross-sectional view showing a state where the same embodiment installed in a water channel is viewed from an upstream side.

FIG. 4 is a cross-sectional view showing a state of the water channel installed in the water channel viewed from the wall surface side of the water channel.

FIG. 5 is a perspective view showing a different embodiment.

FIG. 6 is a vertical cross-sectional view showing the structure of a different embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plate-shaped material 1a Refraction part 1b Lower end part 2 Support pin 2a Head part 2b Tip part 3 Flexible sheet 3a, 3b Resin sheet 3c Overhang part 4 Fixing pin 5 Opening part

Claims (4)

[Claims] 1. An aquatic organism protector which is installed in a waterway to secure and protect a living area of aquatic organisms, which is a plate-like member arranged along a water stream flowing through the waterway. A projecting support portion that is formed to project on the bottom surface side of the plate-shaped member and is configured to incline the plate-shaped member on the support surface in the water channel with the downstream side of the water channel facing upward, and arranged on the upstream side of the water channel. And a flexible sheet-shaped portion connected to an end of the plate-shaped material. 2. The flexible sheet-like portion according to claim 1, wherein the flexible sheet-like portion is provided with an overhanging portion formed so as to extend a predetermined amount outside the side surface portion of the plate-like member. Underwater creature protection equipment. 3. The flexible sheet-shaped portion according to claim 1, wherein two sheets are made to face and adhere to both front and back surfaces of an end portion of the plate-shaped material, and the flexible sheet-shaped portion is outside the intervening range of the plate-shaped material. Then, an aquatic organism protection device characterized by being adhered to each other. 4. The aquatic organism protection apparatus according to claim 1, wherein an opening is partially provided in the middle of the inclination of the plate-shaped member.