JP2511775Y2 - Firefly larva habitation concrete waterway - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Use) The present invention relates to a concrete waterway in which a habitat for aquatic plants and animals is provided and the natural environment in which fireflies fly is taken into consideration.

(Conventional Technology Product) Conventional concrete canals have a structure for efficiently flowing water, as seen in agricultural concrete canals.

In particular, in the case of agricultural waterways, the beneficiaries of the farmers bear a part of the cost for modernization and waterway repair, even in the case of national projects, so the natural environment and even the habitats and plants of the waterways were taken into consideration. It was economically difficult to use the product.

For example, in an irrigation canal, the main issue is how to quickly flow water from the upstream side to the downstream side, considering the roughness coefficient of the side wall of the canal or the floor slab. I was there. In addition, in the drainage channel, how to economically improve the drainage effect of the field is taken into consideration, and in order to increase the area of the field, it was a product with almost vertical walls.

However, as for the drainage channels for agriculture, as the renovation work progresses from the horizontal Tabata district to the reservoir near the reservoir, where the canals have vertical gradients, the flora and fauna that lived in the canals could no longer live, and that much of the night Fireflies, who were dancing in the field, gradually stopped living. This is due to the increase in the number of concrete canals, which are being promoted under the name of the agricultural modernization basic maintenance project and which do not have underground infiltration or plants.

(Problems to be Solved by the Invention) The present inventor has completed the present invention in order to solve these problems as a result of various investigations while engaged in manufacturing and construction of concrete products.

(Means for Solving the Problem) In the present invention, in a concrete water channel that is integrated with earth retaining side walls 1 and 1 and a floor slab 2, an earth and sand intermediate retaining small wall 3 is formed at the top of the channel inner surface of the floor slab 2. Then, a hole 4 which is a hollow is provided through the floor slab 2, and a small gravel 5 is laid on the opening 4 to integrate it with the foundation gravel layer 6 so that groundwater springs into the waterway.
In addition, the small gravel is a firefly larvae-concrete concrete canal in which water is allowed to infiltrate, and the soil side wall and the concrete side wall are RCs depending on the external stress.
This is a structure in which both side walls 1 and 1 made of concrete (reinforced concrete), which are inclined outward and whose inner surface is a rough surface, are integrated via a floor slab 2.

An earth and sand retaining small intermediate wall 3 is provided in parallel with the side walls 1 and 1 or the side walls 1 and 1-1 having a height difference at appropriate positions at the top of the inner surface of the watercourse of the floor slab.

At a site where there is a difference in height between the left and right banks, it is preferable to use the low side wall 1 and the high side wall 1-1 as in the embodiment of FIG.

If the product is large, complicated, complicated and large, or if it is difficult to carry in the product at the construction site, on-site assembly may be performed as shown in the embodiments of FIGS. 5 and 6.

When natural stones are produced in the vicinity, natural stones may be attached to the floor slab 2 as the intermediate small wall 3 as shown in the sectional perspective view of FIG.

It is preferable that the side wall 1 is largely inclined outward as shown in FIGS. 8 and 9. Further, the inner surface of the side wall 1 is preferably a rough surface. By doing this,
The larvae of fireflies can easily rise to the ground, and algae and the like are easily attached to them, so that it is possible for kawana to live.

The distance between the intermediate small walls 3 depends on the flow rate of the water channel and the vertical gradient of the water channel, but the minimum distance is preferably 200 mm or more.

The middle small wall 3 has a thickness of 50 in consideration of the prevention of sediment outflow.
It is preferable that the height is about mm and the height is about 150 mm.

Further, the intermediate small wall 3 can be manufactured by a bond adhesive method metal fitting mounting welding mortar finish bolt binding mortar finish as shown in FIG. When manufactured in this manner, the product is less than the concrete volume of the floor slab opening 4, so the product of the present invention is inexpensive even when compared with the cost of a conventional waterway product.

Furthermore, when natural stones produced nearby are used for the intermediate wall 3 as shown in Fig. 11, not only is it most economical, but it is also an environmental product that has the effect of giving comfort to local residents. The product of this invention has the advantage that it can be manufactured with a conventional mold. For example, the combination with other products as shown in FIGS. 5 and 6, and the product shown in FIG. 9 can be manufactured by the conventional start-up attachment of the floor slab portion of the formwork.

According to the present invention, the floor slab 2 between the intermediate small wall 3 and the side wall 1 is provided with a hollow through hole 4 which is vertically long in the waterway extension direction, and the small gravel 5 is spread over the open hole 4. .

The size of the opening 4 depends on the soil pressure stress of the side wall 1 or the side wall 1-1 and the size of the product, but when the length of the product is 2 m, the width of the opening 4 is 150 mm. It is preferable that the standard is about 200 mm and a length of 300 to 500 mm. If the opening 4 is too small, the small gravel packed inside is not stable. Therefore, since aquatic plants cannot be colonized, Kawana and the like cannot inhabit.

At the time of construction, it is preferable that the foundation be integrated with the floor slab opening portion 4 to allow water to flow therethrough, and at the same time, a river gravel mixed with boulders or a gravel layer 6 should be filled in this portion. By doing so, it is possible to inject spouting groundwater and permeate running water.

In addition, it is preferable to lay a sand mat 9 under the foundation gravel layer 6 in order to prevent the mud from being jetted at the same time as the ground water is jetted.

If the foundation is relatively soft, as shown in FIG.
Is preferably provided.

By doing so, the reproduction of the aquatic plant 10 can be promoted, and the kawana that serves as a feed for the adult firefly can be made to live. As a result, the larva of the firefly can be made to live.

The present invention has the following effects due to the above configuration.

(Effect of the device) Since it has a structure that allows the aquatic plant 10 to be propagated at the same time as spouting and infiltrating groundwater, it is possible to inhabit and breed the kawana etc. Can live.

Although not shown, in the construction of the present invention, it is possible to provide a place where children can get close to the water in the summer by constructing a water flow stop at an appropriate height downstream.

As described above, the present invention has excellent effects as compared with conventional products, is easy to manufacture, carry out, and construct, and the total cost can be relatively low.
It is a useful product that can restore the nature that is being lost by inhabiting firefly larvae.

[Brief description of drawings]

 FIG. 1 is a schematic sectional view of an embodiment. FIG. 2 is a schematic sectional view of an embodiment in which a fish bed BOX is constructed on a side wall. FIG. 3 is a perspective view of a concrete portion shown in FIG. FIG. 5 is a schematic sectional view of an embodiment. FIG. 6 is a schematic sectional view of an embodiment. FIG. 7 is a schematic perspective view of an embodiment. FIG. 8 is a schematic sectional view of an embodiment in which an inner side wall is an environmental product. Fig. 10 is a schematic perspective view of an embodiment in which the inner side wall is an environmental product. Fig. 10 is a schematic cross-sectional view of an embodiment of soft ground. Fig. 11 is a perspective schematic view of an embodiment in which a small wall is natural stone. Cross-sectional schematic view of small wall installation part 1 …… Soil retaining side wall 1-1 …… High side wall of land with height difference 2 …… Floor slab 3 …… Intermediate small wall 3-1 …… Natural stone of intermediate small wall 4 ... Floor slab opening 4-1 ... Freshwater fish and shellfish distribution opening 5 ... Small gravel, 6 ... Foundation gravel layer 7 ... Insole small gravel, 8 ... Basic concrete ...... sand mat, 10 ...... aquatic plant 11 ...... adhesive, 12 ...... mortar 13 ...... bracket, 14 ...... length bolt

Claims (3)

(57) [Scope of utility model registration request] 1. In a concrete waterway which is integrated through the earth retaining side walls 1 and 1 and a floor slab 2, an earth and sand retaining earth intermediate small wall 3 is formed at the top of the inner surface of the waterway of the floor slab 2 and penetrates the floor slab 2. A hole 4 which is a hollow, and a small gravel 5 is laid on this opening 4 to integrate it with the foundation gravel layer 6 and groundwater springs into the waterway.
In addition, a firefly larva habitat concrete waterway where running water penetrates and aquatic plants are planted on the small gravel. 2. A firefly larvae-bearing concrete canal according to claim 1, wherein the retaining wall is inclined outward. 3. The firefly larvae-bearing concrete canal according to claim 1, wherein the inner surface of the retaining wall is a rough surface.