JP3989904B2 - Freshwater fish reef and installation method - Google Patents

Description

  The present invention relates to a fish reef that serves as a hideout / feeding / spawning ground for fish, and more particularly to an improvement in a fish reef for freshwater fish installed in a river, a regulating pond, a reservoir, or a lake.

  Conventionally, fish reefs with various structures and shapes have been made. Most of these traditional fish reefs are installed in the sea and are intended for marine fish. They have a considerable strength made of concrete, iron, plastic, etc., and have a relatively simple structure. There are almost no examples of freshwater fish reefs that are designed to adapt to freshwater fish that inhabit rivers, regulating ponds, reservoirs, lakes, and lakes.

  Freshwater fish have different habits from saltwater fish, and the habitat or hiding place is a stone gap in the riverbed, but egg laying is laid on the roots of aquatic plants that grow near the surface of the water. For this reason, a reef for seawater fish that is installed in the sea cannot be adapted as a reef for freshwater fish even if it is installed in a river or lake as it is.

  In addition, fish reefs installed in rivers, lakes, etc. should not interfere with the flow of water, especially in the event of a large amount of water discharge such as during a flood, which will hinder the flow and encourage the overflow of flowing water from the river. It is required not to be.

  For this reason, it should not be a robust and semi-permanent structure, such as a fish reef installed in the sea for saltwater fish, but a structure that breaks down and flows away when it flows. In addition, when a fish reef is destroyed and its fragments are scattered on the riverbed, the structure of the fish reef avoids plastic materials that do not corrode so that it naturally corrodes. Must be configured with

  Conventional reefs for saltwater fish have a relatively simple structure that is robust and semi-permanent, and therefore it is difficult to have a complex structure that is preferred by freshwater fish. Sometimes there is a problem that can prevent flood control. Furthermore, there is a problem in which no consideration is given to the pollution of the natural environment.

  The present invention eliminates these problems and uses natural trees, stones and vegetation that are usually present in rivers as materials to avoid disturbing the natural environment, and has a complex structure that freshwater fish prefer, and during floods An object of the present invention is to provide a reef for freshwater fish that will not be washed away and hinder flood control.

In the present invention, as a means for solving the above-described problems, as described in claim 1, a plurality of timbers 10 made of thinned timbers and logging timbers are juxtaposed to form a natural string. · rope raft-like or set in a grid shelves 1 by bonding by strapping and wooden nails-wedge by, the shelves 1, superimposed on a plurality, vertical multistage through the spacers 11 to form a shelf spacing, the peripheral portion thinning material, by assembling struts 12 made of round timber felling material, assembling the reef body a shelf stepped multistage which freshwater fish formed apart you swim between the shelf 1 and the shelf 1, the reef body a of the upper surface of the shelf 1 of the top-level, forming a cultivation bed b to vegetation water plants, in the shelf space formed between the shelf 1 and the shelf 1, stone and forming a gap which is a habitat of freshwater fish It intended to raise reef for freshwater fish, characterized in that the gap formation member 3, such as crude 朶 arranged That.

  In order to avoid consideration of the natural environment and prevent flood control during flooding, this measure uses trees, stones and vegetation that normally exist in rivers, and floats in the water so that they are washed away during flooding. It is a means of assembling into a fish reef mainly of flowing log timber.

In addition, a plan view of the three-sided concrete water channel 4 constructed by concrete in which the slopes 40 and 40 on both the left and right sides and the floor 41 are provided in accordance with claim 2 is shown in plan view. It is cut into the notch shape slope 40 at substantially a substantially aligned sectional floor 51 on the floor 41 of the channel 4 wall 50 of the side surface of the channel 4 in a front view of the flow direction of the waterway 4 in substantially vertical A right triangle-shaped cutout 5 is installed, and in the cutout 5 , a plurality of timbers 10 made of thinned timber and felled logs are juxtaposed and tied together with natural material strings and ropes and wooden A shelf 1 assembled in a hook shape or a lattice shape by coupling with a nail / wedge is stacked in multiple stages on top and bottom via a spacing material 11 that forms a spacing between the shelves, and a column made of thinned and logged logs on the periphery. multistage made by assembling 12 the trays shaped reef body a, the reef body a The width of each shelf 1 to be stacked below with successively narrower toward the shelf of the upper, and placed assembled in a shape to follow the shape of the notch 5 in the flow direction as viewed in the coolant channel 4, most of the reef body a the upper surface of the shelf 1 of the upper laying the sand 2 as the cultivation bed of aquatic plants, the shelf 1 and in the shelf spacing between shelves 1, gap formation member 3 stones, crude 朶 like to form a gap serving as a habitat for freshwater fish characterized in that a claim 1, wherein the reef for freshwater fish,
In addition, the right and left slopes 40 and 40 and the floor face 41 according to claim 3 are notched in the slope 40 in a plan view in an appropriate place of the slope 40 of the three-sided concrete water channel 4 constructed of concrete. The cut-out portion 5 having a substantially right-angled triangular cross section is provided in which the wall surface 50 of the side surface of the water channel 4 is substantially vertical and the floor surface 51 is substantially aligned with the floor surface 41 of the water channel 4 in a front view in the flow direction of the water channel 4. In the notch 5 , a plurality of timbers 10 made of thinned and thinned logs are juxtaposed and tied together with natural material strings and ropes and combined with wooden nails and wedges. The shelf 1 assembled in a lattice shape is stacked in multiple stages above and below the spacing material 11 that forms the spacing between the shelves, and the multi-level shelf is formed by assembling the pillars 12 made of thinned and logged logs at the periphery. the Jo of reef body a, the rack 1 to be stacked vertically it law waterways 4 It is assembled and arranged in a shape that is inclined to an angle that follows the inclination angle of 40, and earth and sand 2 that is a cultivation floor of aquatic plants is laid on the upper surface of the uppermost shelf 1, and freshwater fish are placed in the space between the shelf 1 and the shelf 1. A freshwater fish reef according to claim 1, characterized in that a gap forming material 3 such as stones or coarse fibers to be used as a ridge is arranged ,
In addition, shelves that are made of thinned wood and logs 10 made of logs are arranged in parallel and tied in a string or lattice by binding with natural string or rope and binding with wooden nails or wedges. 1 is piled up and down in multiple stages through a plurality of spacing members 11, and a fish reef body a assembled in a multi-stage shelf form by providing struts 12 made of thinned wood and logging logs at the periphery, The lower end of the log column 12 provided in the section is formed on a flat bottom surface, near the shore of the adjustment pond 6 constructed of concrete, the uppermost shelf 1 on the surface of running water stretched on the adjustment pond 6 established to be substantially in contact, that the upper surface of the shelf 1 of the uppermost laying cultivation bed and ing sediment 2 of weeds, in the shelf spacing as the swimming location of freshwater fish, stone forms the gap which is a habitat of freshwater fish - crude pale for Suigyo you characterized in that a gap forming member 3 such 朶 It raised the method of installing the reef,
In addition, a shelf 1 in which a plurality of timbers 10 made of thinned and logged logs are arranged in parallel and tied in a string or lattice by binding with natural material strings or ropes and binding with wooden nails or wedges The reef body a is assembled in a multi-stage shelf form by stacking the top and bottom in multiple stages through a plurality of spacing members 11 and providing a support 12 made of thinned and logged logs on the periphery . The lower end side of the pillar 12 made of log material provided at the peripheral part is formed in a conical shape, and the fish reef body a is arranged near the shore of the portion of the river meandering to form the coral, and the pillar made of log material The bottom end of 12 is inserted into the riverbed, and earth and sand 2 that is the cultivation floor for aquatic plants is laid on the upper surface of the uppermost shelf 1, and a gap between the shelf 1 and the shelf 1 becomes a trap for freshwater fish. set of reef for pale Suigyo you, characterized in that the gap forming member 3 stones, crude 朶 like to form disposed It is intended to raise the method.

  The reef for freshwater fish according to the present invention is constructed by assembling the reef body, which is the main body of the structure, into a multi-tiered shelf made of natural wood logs floating in the water, and arranging natural stones and vegetation on it to itch fish. Or because it has a complex structure that serves as a hiding place, it is easy for adhering organisms to attach, and it becomes a feeding ground for freshwater fish that use it as a feed, and when it floods, it will be destroyed and washed away, so flood control There is no hindrance. In addition, since the top shelf of the multi-stage shelf-like fish reef body is laid with earth and sand as a cultivation floor for aquatic plants, it becomes a good hiding place for birds etc., river fish such as carp, funa, catfish etc. Because of its habit of laying eggs on the roots and leaves of aquatic plants, it becomes a spawning ground for river fish.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIGS. 1 to 3 show examples of freshwater fish reefs installed in the middle and downstream of rivers and in reservoirs.

  In FIG. 1, a is a fish reef body, 1 is a shelf, 10 is a log-like timber for assembling the shelf 1, 11 is a spacing material that forms a space between the shelves 1 and 1, and 12 is a fish reef body a. Supports assembled at the peripheral edge, 2 is earth and sand laid to form the aquatic plant cultivation floor b on the upper surface of the highest shelf 1, and 3 is a river fish mushroom in the space between the shelf 1 and the shelf 1. The gap forming material such as stone and coarse ridge loaded so as to form a gap.

  The fish reef body a has an appropriate number of log-like woods 10 arranged in parallel, knitted into a bowl-like shelf 1, and the shelves 1 are laminated in multiple layers via a spacing member 11 serving as a spacer, and they are joined together. As a result, the shelf 1 is assembled into a block shape that overlaps with a plurality of stages, and a column 12 is assembled to the periphery of the shelf 1, but a log-like wood 10 for knitting the shelf 1 and a space are formed. Logs made of thinned wood are used for the spacing material 11 and the support post 12 to be assembled.

  And the mutual connection of the wood 10 made of logs of thinned wood arranged in parallel and the connection with the spacing material 11 made of logs of thinned wood used as spacers and the struts 12 of the thinned wood are made by strings and ropes made of natural materials. Wooden nails, wedges, and mortises are used for tying and bonding of contact parts.

  It is desirable to lay a coarse fiber material on the upper surface of the uppermost shelf 1 in order to form the aquatic plant cultivation floor b, and to lay the soil on it. The coarse fiber material used at this time also uses plant twigs and rough culverts that are vegetated on the riverbed of the river, and is loaded within the space between the shelf 1 and the shelf 1 to form a river fish itch or hideout. The gap forming material 3 such as stones and coarse fibers is also used for natural stones existing in the riverbed and riverbed, or twigs and rough ridges of trees.

  In this example, the support column 12 to be assembled to the peripheral edge of the fish reef body a is formed in a conical shape at the lower end side, so that it can mean by meandering as shown in FIGS. When a fish reef is installed by selecting a part forming a coral, the lower end side of the support 12 is pierced into the soil of the river bed and installed at that location.

  The example shown in FIG. 4 is a modification of the freshwater fish reef shown in the first embodiment, and is a fish reef suitable for installation upstream of a river.

  In this example, the freshwater fish reef includes a shelf 1 in which timbers 10 made of thinned wood logs are arranged in parallel, a spacing material 11 in which thinned wood logs used as spacers are arranged like a cross, and thinned to be arranged at the periphery. Assembling a multi-stage shelf-shaped fish reef body a using plant fiber strings, ropes and wooden nails, wedges, and mortises, and the lower end side of the support 12 to be assembled to the peripheral edge is conical. Although it is the same as the fish reef of the first embodiment, the number of steps for stacking the shelves 1 up and down is increased (five steps in the embodiment) to increase the number of shelves.

  And it arrange | positions in the appropriate position of an upstream, and the lower end side of the support | pillar 12 is pierced and installed in a river bed, At this time, as the gap formation material 3 loaded in a shelf space, many stones which exist in a river bed are loaded. In this way, the installation position is stabilized by its weight.

  In addition, the cultivation floor b of the aquatic plants formed on the upper surface of the uppermost shelf 1 has a rapid flow and the earth and sand are washed away. Therefore, the shelf 1 is formed without laying the earth and sand on the shelf 1. On the surface of the timber 10 made of thinned logs, a cultivation floor b is used that allows the aquatic plants to attach and grow naturally.

  The examples shown in FIGS. 5 to 7 are adapted to be installed in a three-sided concrete water channel 4 constructed of concrete, with three sloped slopes and riverbeds on the left and right sides of the river. It is a reef for freshwater fish.

  The reef for fresh water fish of this example is a shelf 1 in which the reef body a is knitted by arranging logs 10 made of thinned logs in parallel, and a thinning material that forms a space between the shelves by combining the shelves 1 in a cross shape. The spacing material 11 and the struts 12 made of thinned wood logs arranged at the peripheral edge are joined together by plant fiber strings and ropes to construct a multi-stage shelf-like fish reef body a, and the fish reef body A stone for laying sand and sand 2 on the upper surface of shelf 1 at the top of a, forming aquatic plant cultivation floor b, and forming a gap between fresh shelf fish 1 and shelf 1 The construction of the fish reef by loading the gap forming material 3 such as rough sea bream is the same as that of the above-described embodiments.

However, when this fish reef is installed, the three-sided concrete channel 4 is cut into an appropriate portion of the slope 40 on both sides of the channel 4 in a notch shape with respect to the slope 40 in plan view as shown in FIGS. The cut-out portion 5 having a right-angled triangular cross section in which the wall surface 50 that is the side surface of the water channel 4 in a front view is substantially vertical and the floor surface 51 is substantially aligned with the floor surface 41 of the water channel 4 is installed. As shown in the left half of FIG. 7, the width of each shelf 1 of the fish reef body a is set so that it does not hinder the flow of water in the water channel 4. The top shelf 1 is narrowed and the width of the next shelf 1 or less is gradually expanded downward so that the shape of the shelf 1 of the fish reef body a in the longitudinal direction and the cross-sectional shape in the front view are substantially right triangles. By forming it so as to fit within the notch 5 of the water channel 4 formed, Most so that it does not interfere.

  This example is a modification of the third embodiment in which a notch 5 is provided on the slope 40 of the side wall of the three-sided concrete water channel 4 and a fish reef is installed there.

  In this example, in the front view of the flow direction of the water channel 4, to configure the shape of the fish reef body a in the front view so that the fish reef body a fits in the cutout portion 5 having a substantially right triangle shape, As shown in the right half side of FIG. 7, the shelves 1 stacked in multiple stages of the fish reef body a are inclined at an angle that follows the inclination angle of the slope 40 of the waterway 4, so that the notch of the slope 40 of the waterway 4 is cut out. This is an example in which it is installed in the section 5 so as not to obstruct the flow of water flowing through the water channel 4, and the rest of the configuration excluding this point is the same as in the third embodiment.

  8 to 11 show examples adapted to be installed in the adjustment pond.

  The freshwater fish reef of this example has a reef body a having a shelf 1 in which wood 10 made of thinned wood logs is juxtaposed, a spacing material 11 made of thinned wood to be assembled to the shelf 1 in a cross-tree shape, and a peripheral edge. The shelf 1 is assembled into a shape in which the shelves 1 are stacked in multiple layers at intervals, and the earth and sand 2 as the cultivation floor b for aquatic plants b is laid on the upper surface of the highest shelf 1 of the shelf 1 However, it is not different from the above-described embodiments to construct a reef for freshwater fish by loading a gap forming material 3 such as stones or coarse ridges to be used as a trap for hiding or hiding freshwater fish within the interval between shelves. The support | pillar 12 assembled | attached to the peripheral part of a is formed by setting the lower end of it in the flat end surface, and setting it on the floor surface constructed | assembled with concrete.

  In addition, since the adjustment pond can be inspected inside the installed fish reef by discharging the water stretched there and dropping the water, it is loaded within the interval between the shelf 1 and the shelf 1. Various materials such as old tires can be used as the gap forming material 3 while checking whether or not they are suitable for freshwater fish, which is useful for children's learning.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a whole freshwater fish reef for carrying out the present invention. It is a perspective view of the state which installed the fish reef same as the above in the middle of the river. It is a perspective view of the state which installed the fish reef same as the above near the riverbank downstream of a river. It is a perspective view of the modification for upstream installation of the fish reef same as the above. It is a longitudinal front view of a three-sided concrete water channel. It is a top view of the state which installed the fish reef for freshwater fish by this invention in the same waterway. It is a longitudinal front view in the site | part which installed the reef for freshwater fish of the same waterway. It is a perspective view of the example comprised for the adjustment pond of the fish reef for freshwater fish by this invention. It is a perspective view of the highest shelf of a fish reef same as the above. It is a perspective view of the middle shelf of a fish reef same as the above. It is a perspective view of the lower shelf of a fish reef same as the above.

Explanation of symbols

  a ... Fish reef body, b ... Cultivation floor, 1 ... Shelf, 10 ... Wood, 11 ... Spacing material, 12 ... Post, 2 ... Earth and sand, 3 ... Gap forming material, 4 ... Waterway, 40 ... Slope, 41 ... Floor surface 5 ... Notch part, 50 ... Wall surface, 51 ... Floor surface, 6 ... Adjustment pond.

Claims (5)

A plurality of timbers 10 made of thinned and logged logs are juxtaposed in parallel and assembled into a rack-like or lattice-like shelf 1 by binding with a natural string or rope and binding with wooden nails or wedges. 1, a plurality of sheets, stacked in multiple stages above and below the spacing material 11 that forms the spacing between shelves, and a column 12 made of thinned and logged logs is assembled at the periphery, and freshwater fish are placed between the shelves 1 and 1. assembled trays shaped reef body a multistage forming a gap you swimming, the fish reef body a, the upper surface of the shelf 1 of the top-level, forming a cultivation bed b to vegetation water plants, rack 1 and rack 1 and in the form the shelf spacing between, reef for freshwater fish, characterized in that a gap forming member 3 stones, crude 朶 like to form a gap serving as a habitat for freshwater fish. The right and left sides of the slope 40, 40 and the floor 41 are made of concrete and are cut into the slope 40 in a plan view at appropriate locations on the slope 40 in a plan view. A notch portion 5 having a substantially right-angled triangular cross section is provided in which the wall surface 50 which is the side surface of the water channel 4 in a front view in the flow direction is substantially vertical and the floor surface 51 is substantially aligned with the floor surface 41 of the water channel 4. Inside, shelves made of thinned and logged logs 10 in parallel, tied together with natural material strings and ropes and combined with wooden nails and wedges into a rack or lattice 1 is stacked in multiple upper and lower stages via a spacing member 11 that forms a shelf interval, and a multi-stage shelf-shaped fish reef body a formed by assembling struts 12 made of thinned lumber and logging lumber on the periphery , successively narrower toward the width of each shelf 1 to be laminated on top and bottom of the reef body a on the shelves of the upper To the in flow direction as viewed waterways 4 assembled in shape to follow the shape of the cutout portion 5 is placed, laid sediment 2 as the cultivation bed of aquatic plants on the upper surface of the shelf 1 of the uppermost of the reef body a Inclusive, within shelf spacing between shelf 1 and the shelf 1, reef for freshwater fish according to claim 1, characterized in that a gap forming member 3 stones, crude 朶 like to form a gap serving as a habitat for freshwater fish . The three-surface concrete water channel 4 in which the right and left slopes 40 and 40 and the floor surface 41 are constructed of concrete is cut into the slope 40 in a plan view in an appropriate location on the slope 40, and the water channel 4 A notch portion 5 having a substantially right-angled triangular cross section is provided, with the wall surface 50 of the side surface of the water channel 4 being substantially vertical and the floor surface 51 being substantially aligned with the floor surface 41 of the water channel 4. Inside, shelves made of thinned and logged logs 10 in parallel, tied together with natural material strings and ropes and combined with wooden nails and wedges into a rack or lattice 1 is stacked in multiple upper and lower stages via a spacing member 11 that forms a shelf interval, and a multi-stage shelf-shaped fish reef body a formed by assembling struts 12 made of thinned lumber and logging lumber on the periphery , The angle at which the shelf 1 stacked above and below it follows the inclination angle of the slope 40 of the water channel 4 Stones and coarse fibers that are assembled and arranged in a slanting shape, laying earth and sand 2 as the cultivation floor of aquatic plants on the upper surface of the highest shelf 1, and serving as freshwater fish traps in the space between the shelf 1 and the shelf 1 The reef for freshwater fish according to claim 1, wherein a gap forming material 3 such as is disposed . A shelf 1 that is made up of a plurality of timbers 10 made of thinned timber and felled timbers in parallel and tied in a string or lattice by binding with a natural string or rope and binding with wooden nails or wedges, A fish reef body a assembled in a multi-tiered shelf form by providing a pillar 12 made of thinned lumber and logs of logging material at the periphery is provided at the periphery of the reef body a. The lower end of the log column 12 is formed on a flat bottom so that the uppermost shelf 1 is substantially in contact with the surface of the running water stretched on the adjustment pond 6 near the shore of the adjustment pond 6 constructed of concrete. placed on its the upper surface of the shelf 1 of the uppermost laying cultivation bed and ing sediment 2 of weeds, in the shelf spacing as the swimming location of freshwater fish, stone and crude forms the gap which is a habitat of freshwater fish 朶 installation of reef for pale Suigyo you characterized in that a gap forming member 3 and the like Law. A shelf 1 that is made up of a plurality of timbers 10 made of thinned timber and felled timbers in parallel and tied in a string or lattice by binding with a natural string or rope and binding with wooden nails or wedges, A fish reef body a assembled in a multi-tiered shelf shape by stacking a plurality of vertically spaced multi-layered materials 11 in a multi-tiered manner, and provided with struts 12 made of thinned and logged logs at the periphery, the periphery of the fish reef body a the lower end of the strut 12 of round timber provided in forming a cone shape, the reef body a, coordinated near the banks of the portion forming the edge meandering rivers, struts 12 of round timber The lower end is pierced into the river bed, and earth and sand 2 as a cultivation floor for aquatic plants is laid on the upper surface of the highest shelf 1, and a gap between the shelf 1 and the shelf 1 is formed as a trap for freshwater fish. reef installation method for you, characterized in that a gap forming member 3, such as stone, crude 朶 pale Suigyo

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