JP3732065B2 - Firefly growing waterway block and firefly growing waterway - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water channel for improving scenery, biological environment, and the like, and more particularly, to a water channel block and a water channel for growing fireflies that can be used as a habitat or a spawning ground.
[0002]
[Prior art]
Concrete canals are widely used for agricultural and industrial canals, but most of them are unsuitable for breeding and breeding aquatic organisms, insects, and fish. Therefore, in recent years, concrete waterways that take into consideration the ecosystem and the natural environment have been developed, and in particular, various attempts have been made to artificially propagate fireflies that were a feature of summer night in the waterways. (Japanese Patent Laid-Open No. 8-322428, Japanese Patent Laid-Open No. 8-322429, Japanese Patent Publication No. 49-6958, Japanese Utility Model Laid-Open No. 4-46124, Japanese Utility Model Laid-Open No. 6-82119, etc.).
[0003]
Here, the ecology of fireflies will be briefly explained. First, larvae hatched from eggs live underwater in the water until spring of the following year, using Kawanina as food. Next, in the spring, the larvae at the end of the larvae rise from the water to the land and hatch in the soil. In summer, when adults emerged from the wings flock and emit light to color the summer night sky, they lay eggs on waterside moss and finish their life. After that, the egg hatches in summer over autumn and winter, and the life of the firefly is repeated again.
[0004]
In order to artificially propagate such ecological fireflies, first, there is an environment in which Kawanina, the prey for larvae, is inhabited, second is a soil environment for hatching larvae, and third is moss for laying eggs. An environment for breeding is essential, and the present applicant has previously proposed a waterway for protecting aquatic organisms in consideration of these living environments (Japanese Patent No. 2779927).
[0005]
The aquatic organism protection water channel according to the above-mentioned patented invention has a structure in which an inclined wall made of porous concrete is provided on the outer wall side in the water channel, and waterside plants such as moss, reeds and seri that are necessary for spawning fireflies on the inclined wall At the same time, the first and third environments are formed in the waterway by causing the river cucumbers that feed on these waterside plants to live in the waterway. In addition, the inclined wall also serves as a communication path inside and outside the water channel, and the firefly larva to be hatched is led to the soil outside the water channel through the inclined wall to satisfy the second environment. It was.
[0006]
[Problems to be solved by the invention]
However, in the above-mentioned conventional aquatic protection canals, the soil environment for the firefly larvae to hatch has been sought outside the canal, so the soil around the canal can be stepped on by firefly observers, etc. As a result, there was a risk that the protection of pupae and the growth of adults would be hindered.
[0007]
On the other hand, beyond cultivating fireflies, it is inevitable that observers and workers will step into the soil around the waterways in order to observe their ecology and maintain the waterways. There has been a demand for the development of a waterway for cultivating fireflies that can be freely observed and maintained by humans without obstructing any breeding and breeding.
[0008]
In JP-A-8-284136 and JP-A-5-118017, a concrete waterway is proposed in which soil is provided for propagation of plants in the waterway to improve the landscape and purify the water quality. However, these concrete water channels are not intended for the cultivation of fireflies and have soil in the water channels, but do not have the first and third environments described above and are not suitable for the cultivation of fireflies. It was.
[0009]
[Means for Solving the Problems]
The present invention has been made in view of the conventional problems as described above. All living environments necessary as a place of fireflies are maintained in a water channel, and the fireflies are protected and nurtured according to the growth stage. The purpose of the present invention is to provide a firefly-growing channel that can promote the breeding and the like in the channel, and the gist thereof is a channel block formed by the first and second outer walls and the bottom wall facing each other. The inside is partitioned by an intermediate wall lower than the first and second outer walls and divided into two spaces, the space on the first outer wall side is a flowing water portion, the space on the second outer wall side is a soil portion, and the inside of the flowing water portion An inclined wall made of porous concrete having a width shorter than the length of the water channel block is provided on the intermediate wall side, and when the flowing water portion and the soil portion are connected by the inclined wall, the first facing the flowing water portion Roughen each wall of the outer wall and intermediate wall In firefly development canals block or the like, characterized in that a drainage port communicates with the outside of the soil portion and waterways block bottom wall facing the soil portion.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. First, the firefly growing water channel block according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. In FIGS. 1 (a) and 1 (b), 1 is a firefly growing water channel block. It consists of a block 10 and a soil part block 20 , and firefly growing by continuously installing in the longitudinal direction a water channel block 1 formed by combining this as shown in FIG. 1 (b) and FIG. 2. It is configured to construct a waterway for use .
[0011]
Specifically, the flowing water block 10 includes a first outer wall 11, an intermediate wall 12, and a bottom wall 13. The height L 2 of the intermediate wall 12 is lower than the height L 1 of the first outer wall 11. is there. By flowing water through the flowing water block 10 (see FIGS. 2 (a) and 2 (b)), a flowing water portion 14 is formed which serves as a habitat for firefly larvae and kawainina serving as food. In addition, the inner surfaces 11a and 12a facing the water flowing portion 14 of the first outer wall 11 and the intermediate wall 12 are roughened so as to enable breeding of moss and the like necessary for the spawning of fireflies and bait of river bream. is there.
[0012]
Furthermore, an inclined wall 15 made of porous concrete having an outer peripheral surface that is rougher than that of ordinary concrete is disposed on the intermediate wall 12 side in the flowing water portion 14. The inclined wall 15 reaches the upper end of the intermediate wall 12 from the upper surface of the bottom wall 13 and serves as a breeding place for moss and the like, and at the same time serves as a communication path between the flowing water portion 14 and a soil portion 23 described later. . Note that the width L4 of the inclined wall 15 is equal to or less than the length L3 of the first outer wall 11. In addition to this, as shown in FIGS. 2 (a) and 2 (b), a cobblestone is laid in the flowing water portion 14 to promote the growth of algae and at the same time, a firefly hiding place is provided.
[0013]
On the other hand, the soil block 20 includes a second outer wall 21 and a bottom wall 22, and the second outer wall 21 has the same dimensions as the height L <b> 1 and the length L <b> 3 of the first outer wall 11. By combining the soil portion block 20 such that the end surface 22a of the bottom wall 22 abuts on the outer surface 12b of the intermediate wall 12 of the flowing water block 10, the second outer wall 21, the bottom wall 22, and the intermediate wall are combined. The soil part 23 is formed by forming a space part composed of 12 and filling the space part with soil.
[0014]
The soil portion 23 is a place for firefly larvae to hatch, and by propagating plants on the soil portion 23, it is suitable for reproduction of adult firefly worms when protecting the moth from external enemies such as birds. Forming an environment. Here, if the soil used for the soil portion 23 is too viscous, it is not suitable for firefly hatching (formation of soil), so a mixture of soil and sand is used, preferably soil: sand. The mixing ratio is 2: 1.
[0015]
Moreover, in order to prevent the soil part 23 from being flooded due to rain or the like, it is necessary to ensure a certain degree of air permeability. For example, as shown in FIG. 23a, when the lower half is a gravel layer 23b, a drain port 23c is provided in the bottom wall 22 of the soil block 20, or the bottom wall 22 of the soil block 20 and running water as shown in FIG. The drainage of the soil part 23 is made favorable by setting it as the structure which opened the clearance gap 23d as a drain outlet between the intermediate walls 12 of the part block 10. FIG. Although not shown, a finer filter than sand particles may be interposed between the earth and sand layer 23a and the gravel layer 23b so that the earth and sand do not flow out from the drain outlets 23c and 23d, etc.
[0016]
Next, the operation of the firefly growing water channel block 1 having the above-described configuration will be described. First, moss and the like grow on the inner surfaces 11a and 12a of the first outer wall 11 and the intermediate wall 12 subjected to the rough surface treatment, or the outer peripheral surface of the inclined wall 15, and the adult firefly lays eggs here. The firefly larvae hatched from the eggs live in the flowing water section 14 until the spring of the following year using kawainina as food. In the spring, the larva climbs the inclined wall 15 and rises from the flowing water part 14 to the soil part 23 and hatches in the soil part. In summer, firefly adults emerge from the cocoons and lay eggs on the inner surfaces 11a, 12a or the inclined walls 15 which are rough during the breeding season.
[0017]
According to this embodiment having such a configuration, all the living environment necessary as a place where the fireflies live is provided in the firefly breeding waterway block 1, and the protection, breeding and promotion of the fireflies according to the growth stage, etc. Can be planned in the waterway. In particular, by providing the soil portion 23 in the firefly-growing channel block 1, the soil portion 23 is not stepped down, effectively protecting the moths in the soil, and allowing more moths to be adults. Can emerge. Moreover, even if it steps into the vicinity of the firefly growing waterway block 1, it does not have any adverse effect on the straw in the soil part, so that it is possible to freely observe the ecology of fireflies and maintain the waterway.
[0018]
Next, a firefly growing water channel block according to a second embodiment of the present invention will be described with reference to FIGS. 3 (a) and 3 (b), reference numeral 2 denotes a firefly growing water channel block . As shown in FIG. 3 (a), the water flow block 30 having a substantially U-shaped cross section is disposed on both sides of the water flow block 30. It is composed of a substantially L-shaped cross-section of the first soil portion block 40 and the second soil unit block 50., which successively waterways block 2 formed by combining as shown in FIG. (b) in the longitudinal direction It is configured to construct a waterway for firefly growth .
[0019]
Specifically, the flowing water block 30 includes first and second intermediate walls 31 and 32 and a bottom wall 33. The height L2 of the first and second intermediate walls 31 and 32 is set to the first and second intermediate walls 31 and 32. And it is made lower than the height L1 of the 1st and 2nd outer walls 41 and 51 of the 2nd soil part blocks 40 and 50. As shown in FIG. When water flows down in the flowing water block 30 as described above, a flowing water portion 34 is formed which is a place where the firefly larvae and the kawainina serving as a bait thereof live.
[0020]
Further, the inner surfaces 31a and 32a of the first and second intermediate walls 31 and 32 facing the water flowing portion 14 are roughened so that the moss necessary for spawning fireflies and moss and the like can be grown. It is. Further, an inclined wall 35 made of porous concrete is disposed in the flowing water portion 14 as in the first embodiment. A specific arrangement pattern of the plurality of inclined walls 35 when the water channel is constructed by the firefly growing water channel block 2 will be described later.
[0021]
On the other hand, the first and second soil portion blocks 40 and 50 are respectively composed of first and second outer walls 41 and 51 and bottom walls 42 and 52 having the same dimensions, and the length L3 thereof is the first. The first and second intermediate walls 31, 32 have the same length L3. Such first and second soil portion blocks 40, 50 have respective end surfaces 42 a, 52 a of the bottom walls 42, 52, respectively, outer surfaces 31 b, of the first and second intermediate walls 31, 32 of the water flow portion block 30, The first soil wall 43 including the first outer wall 41, the bottom wall 42, and the first intermediate wall 31, and the second outer wall 51, the bottom wall 52, and the second intermediate wall 32 including the first outer wall 41, the bottom wall 42, and the first intermediate wall 31 are combined. Two soil portions 53 are formed.
[0022]
Here, as an arrangement pattern of each inclined wall 35 which connects the said flowing water part 34 to one or both of these 1st and 2nd soil parts 43 and 53, two types shown to Fig.4 (a), (b) There are things. That is, when it is desired to increase the flow rate of water in the flowing water part 34, each inclined wall 35 is fixed to either the first or second intermediate wall 31, 32 side as shown in FIG. Arranged at intervals so that the water flow is straight. On the contrary, when it is desired to reduce the flow rate of the water in the flowing water part 34, as shown in FIG. 4 (b), the inclined walls 35 are spaced apart from each other on the first and second intermediate walls 31 and 32 side. Alternatingly arranged, the water flow meanders.
[0023]
In addition, although not illustrated, when making drainage of the 1st and 2nd soil parts 43 and 53 favorable, each bottom wall 42 of the 1st and 2nd soil part blocks 40 and 50 similarly to said 1st embodiment. , 52 is provided with a drain outlet, or each of the bottom walls 42, 52 of the first and second soil portion blocks 40, 50 and the first and second intermediate walls 31, 32 of the running water block 30 It is good also as a structure which opened the clearance gap as a drain outlet in between.
[0024]
According to the firefly growing water channel block 2 of the present embodiment having such a configuration, the same effects as those of the firefly growing water channel block 1 of the first embodiment described above can be obtained, and the first and second sides are provided on both sides of the water flow portion 34. Since the soil portions 43 and 53 are provided, the width of the water channel is increased, and when more fireflies can be propagated, the landscape can be improved over a wide area.
[0025]
The firefly growing water channel according to the present invention is not limited to the above-described embodiments. For example, in the firefly growing waterway block according to the first and second embodiments, the entire waterway block is formed by combining the flowing water part block that is a U-shaped groove and the soil part block that is an L-shaped groove. A block having a special shape in which two outer walls, an intermediate wall, and a bottom wall are integrated may be used.
[0026]
Moreover, in the firefly breeding waterway according to the first and second embodiments, the first and second outer walls and the intermediate wall are configured to stand upright, but a part or all of these wall portions are inclined. Also good. In particular, if the intermediate wall is made of porous concrete and is inclined upward and outward, the above-described inclined wall can be omitted.
[0027]
【The invention's effect】
The firefly breeding waterway according to the present invention has the above-described configuration, so that all the living environment necessary as a place of firefly habitat is prepared in the waterway, and firefly protection, breeding and promotion of reproduction according to the growth stage Can be planned in the waterway. In particular, by providing the soil part in the water channel, the soil part is not stiffened, effectively protecting the moths in the soil and allowing more moths to emerge into adults. . In addition, even if you step into the vicinity of the waterway, there will be no adverse effects on the dredging in the soil, so you can freely observe the ecology of fireflies and maintain the waterway.
[Brief description of the drawings]
FIGS. 1A and 1B show a firefly growing water channel block according to a first embodiment of the present invention, in which FIG. 1A is an exploded perspective view and FIG. 1B is an assembled perspective view.
FIGS. 2A and 2B are explanatory views showing a drainage structure of a soil part in a water channel constructed by the firefly growing water channel block. FIG.
3A and 3B show a firefly growing water channel block according to a second embodiment of the present invention, in which FIG. 3A is an exploded perspective view and FIG. 3B is an assembled perspective view.
FIGS. 4A and 4B are explanatory views showing the arrangement pattern of inclined walls in a water channel constructed by the firefly growing water channel block. FIG.
[Explanation of symbols]
1, 2 Firefly growing channel block 10, 30 Flowing water block 20 Soil block 40 First soil block 50 Second soil block 11, 41 First outer wall 21, 51 Second outer wall 12 Intermediate wall 31 First intermediate wall 32 Second intermediate wall 13, 22, 33, 42, 52 Bottom wall 15, 35 Inclined wall 14, 34 Flowing part 23 Soil part 43 First soil part 53 Second soil part 11a, 12a, 31a, 32a Inner surface 12b, 31b, 32b Outer surface 22a, 42a, 52a End surface 23a Earth and sand layer 23b Gravel layer 23c Drain port 23d Drain port (gap)

Claims (5)

The inside of the water channel block formed by the first and second outer walls and the bottom wall facing each other is partitioned into two spaces by an intermediate wall lower than the first and second outer walls, and the space on the first outer wall side is divided. A flowing water part, the space on the second outer wall side as a soil part, an inclined wall made of porous concrete having a width shorter than the length of the water channel block is provided on the intermediate wall side in the flowing water part, and the flowing water part and the soil are provided by the inclined wall. The first outer wall and the intermediate wall facing the flowing water part are roughened, and the bottom wall facing the soil part communicates with the soil part and the outside of the water channel block. A waterway block for growing fireflies, characterized by providing a drainage outlet.   When the water flow part is formed by the first outer wall, the intermediate wall, and the bottom wall, the water flow part block is provided with the inclined wall on the intermediate wall side in the water flow part, and the second outer wall and the bottom wall. A soil block, and the end surface of the bottom wall of the soil block is opposed to the outer surface of the intermediate wall of the flowing water block to combine the two, whereby the second outer wall, the bottom wall, and the intermediate wall 2. A firefly-growing channel block according to claim 1, wherein a soil portion is formed. The water channel block formed by the first and second outer walls and the bottom wall facing each other is partitioned into three spaces by partitioning with a first and second intermediate wall lower than the first and second outer walls. And the central space surrounded by the second intermediate wall is the running water part, and the spaces on both sides of the running water part are the soil parts, respectively, and one of the intermediate walls in the running water part has a width shorter than the length of the water channel block. An inclined wall made of porous concrete is provided, and when the flowing water part and at least one of the soil parts are connected by the inclined wall, each wall surface of the first and second intermediate walls facing the flowing water part is roughened. A firefly-growing waterway block characterized in that a drainage port that communicates with the soil part and the outside of the waterway block is provided on the bottom wall facing the both soil parts .   When the water flow part is formed by the first and second intermediate walls and the bottom wall, the water flow part block in which the inclined wall is provided on either intermediate wall side in the water flow part, and the first or second A pair of soil block composed of an outer wall and a bottom wall, the end surfaces of the bottom wall of each soil block being opposed to the outer surfaces of the first and second intermediate walls of the flowing water block, and combining the three The firefly-growing channel block according to claim 3, wherein a pair of soil portions are formed by the first and second outer walls, the bottom wall, and the first and second intermediate walls.   5. A water channel in which a plurality of firefly growing water channel blocks according to claim 4 are continuously installed, wherein the inclined walls provided in the water flow portions of the firefly growing water channel blocks are arranged on the first intermediate wall side and the second intermediate wall side. A firefly-growing waterway characterized in that the firefly-growing waterway is configured to be alternately disposed and installed.

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