JPH09242053A - Concrete irrigation canals and concrete blocks for irrigation canals - Google Patents

Abstract

(57) [Summary] [Purpose] A stagnation portion is formed in a concrete irrigation canal for a field to provide an irrigation drainage that is suitable for inhabiting seafood, underwater insects, etc. Providing irrigated concrete canals that will enable years. [Composition] A waterway 10 in which a large number of concrete blocks are connected to supply or discharge water to a field, and in any of the concrete blocks connected as described above, the water is provided on a side of the concrete block. The projecting overhanging water channel portion 2 is formed with a required interval.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete irrigation canal and a concrete block for an irrigation canal, and provides a stagnation part in the concrete irrigation canal for a field to provide an irrigation drainage that is suitable for inhabiting seafood and underwater insects. In addition, it aims to construct an irrigation concrete canal that allows mud and other aquatic life to perpetuate.

[0002]

2. Description of the Related Art Conventionally, irrigation canals for fields are essentially naturally formed trenches formed on the surface of the soil layer. Generation and growth are remarkable, and significant labor and manpower are required for weeding or cleaning around such a waterway.

In order to solve the above-mentioned difficulties in maintaining and managing the canal such as weeding and cleaning around the canal, the irrigation canal as described above is formed by using a precast concrete block, that is, both side surfaces. It is becoming more and more common to use concrete for the bottom and the bottom.Because it is a waterway made of concrete products, the generation of weeds is basically prevented and the waterway is not expanded. There is.

[0004]

The above-mentioned concrete block irrigation canal basically eliminates the occurrence of weeds and the like, so that it is not necessary to weed and clean, but in the conventional irrigation canal. Living organisms such as mud and prawns, other seafood, and aquatic insects, which have been widely confirmed, cannot live, and naturally dragonflies and fireflies are not required. Becomes significantly worse.

In order to avoid the disadvantage of the irrigation canal using such a concrete block, it is natural to return it to the canal with an excavation ditch from ancient times, but in that case, it becomes difficult to weed and clean. In any case, it is impossible to maintain a favorable natural environment containing plants and organisms from ancient times, and avoid the irksomeness of weeding and cleaning.

[0006]

The present invention effectively solves the problems in the prior art as described above, and facilitates management so that it is not necessary to worry about weeding and cleaning. It seems that.

(1) A water channel in which a large number of concrete blocks are connected so as to supply or discharge water to a field, and in any of the concrete blocks connected as described above, the side of the concrete block A concrete irrigation canal characterized in that the overhanging canal projecting in one direction is arranged at a required interval.

(2) A water channel block having a U-shaped cross section or a dividing wall provided with an overhanging projecting portion formed by bending a side wall on one or both sides of the block. A concrete block for irrigation canals, which is formed to have the same or different depth as the bottom surface.

(3) The concrete block for irrigation canals according to the above item (2), characterized in that the top surface of the overhanging protrusion is covered.

(4) The concrete block for irrigation canals according to any one of the items (2) to (3), wherein the projecting end face of the projecting projecting portion is opened.

(5) Any one of the above items (2) to (4), characterized in that a narrowed entrance portion is formed by forming a projection portion from the side wall of the concrete block at the entrance portion of the overhanging projection portion. The concrete block for irrigation canals described in 1.

(6) The above (2) to (2) characterized in that the bottom of the overhanging protrusion is filled with a setting material such as stone material or fiber material.
The concrete block for irrigation canals according to any one of (5).

(7) A channel block having a U-shaped cross section or a flow dividing wall is L-shaped and is connected so as to face each other with an interval corresponding to the channel width required, and one of the L-shaped members is connected. Or, the block for concrete irrigation canal according to any one of the above items (2) to (6), characterized in that an overhanging protrusion is formed on both sides.

(8) An opening is formed in one or both of the side walls of a concrete block molded with a U-shaped cross section or a flow dividing wall, and a separately molded overhanging body is attached to the opening to project and project. The concrete block for irrigation canals according to any one of the above items (2) to (7), characterized in that the concrete block is formed.

(9) In the above item (8), the overhang portion body is formed by splitting into a plurality of pieces, or is formed so as to groin into a plurality of side groove portion bodies to which the overhanging water channel portions are connected. Concrete block for irrigation canals described.

(10) The overhanging water channel portion is formed by projecting in a crotch manner on three or more concrete blocks, and an opening communicating with the overhanging water channel portion is formed in the concrete blocks sandwiching the intermediate concrete block. The concrete block for irrigation canals according to (9) above.

(11) An engaging step is formed at a bottom portion of the overhanging water channel portion, and an engaging step portion formed on one side of the water channel block is engaged and set. Concrete block for irrigation canals described in.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Specific embodiments of the present invention as described above will be described with reference to the accompanying drawings. In the present invention, as shown in FIG. 1, water is supplied to or discharged from a field. The formation of such a water channel by a large number of concrete blocks 1 is the same as that of the conventional concrete block described above. By forming the irrigation water channel 10 with such a series of concrete blocks, weeds grow in the water channel. It is possible to prevent this from happening, to weed it, and to make cleaning of the water channel 10 extremely easy.

According to the present invention, however, in the above-mentioned water channel 10, the concrete block 1 in which the open portions are formed in the side wall portions spaced at intervals of, for example, 10 to 30 m.
The overhanging water channel portion 2 protruding to the side of a is formed. As an example of the formation of the overhanging water channel portion 2, as shown in FIG. 2, the concrete block 1a and the bottom portion 3 are integrally formed. It may be formed or provided with an opening 4 at the bottom as shown in FIG. In any case, the cross-sectional shape of the block 1a is the same as that of the other general concrete blocks 1, and it is possible to form a series of water channels by connecting and arranging in exactly the same way as a conventional U-shaped concrete block. It's clear.

FIG. 4 and FIG. 5 show the overhang water channel portion 2 according to the present invention.
A block having a top surface is shown as a block having a ridge, that is, all the top surfaces of the overhanging waterway portion 2 are covered by the lid portion 5, and fish and the like are protected from birds in the overhanging waterway portion 2. Is limited to being attacked. The one shown in FIG. 4 has an opening 4 on the bottom surface, and like the one shown in FIG. 3, it is suitable for use in a drainage system, and the bottom 4 of the overhanging water channel part 2 retains the permeation of drainage for a long period of time. 5 has the bottom 3 integrally formed, and by using it in a water supply system for a paddy field or the like, it is possible to accurately supply substantially all of the supplied water.

Although FIG. 6 shows an overhanging water channel portion 2 having an opening 4 and a lid portion, it is shown in a structural mode that facilitates its molding and production, that is, the general structural relationship is that shown in FIG. Except that the lid body 5a formed separately is used as the lid portion, and by doing so, the lid portion and the bottom portion can be formed without using a special core die as a production molding die. The overhanging water channel portion 2 having the above is produced simultaneously with the main body of the block 1a.

In FIG. 7, the concrete block 1 is provided with the overhanging water channels 2 and 2 on both sides, respectively. By doing so, it is natural that the characteristics of the overhanging water channel 2 are doubled. Is. Although FIG. 7 shows the case where a bottom portion is formed in the overhanging water channel portion 2, the bottom portion is the opening portion 4 as shown in FIGS. 3 and 4, or as shown in FIGS. 4 and 5. It goes without saying that the lid 5 or the lid body 5a may be used.

8 and 9 show a case where the front end face of the overhanging water channel portion 2 is the opening 6. That is, the overhang waterway section 2
By making the front end face of the open mouth 6 the open mouth 6 with cultivated soil of the field, as shown in FIG. 13 and FIG. 14 which will be described later, the inside of the block and the field are connected, and freshwater organisms come and go. The mud and shrimp can hibernate in the mud of the wetland. In addition, by installing a wooden pile 11 in the opening 6 and closing the front end with the natural stone 12, the void of the natural stone 12 becomes a habitat for aquatic insects and fry, and the back surface of the field and the ventilation and water flow. And provide a favorable environment. As shown in the figure, the overhanging water channel portion 2 may have the bottom portion 3 or the opening portion 4, but of course, the lid portion 5 may be formed on the upper surface thereof as shown in FIGS. The lid 5a may be provided as shown in FIG.

FIGS. 10 to 15 show the laid state of the concrete block 1a having the overhanging water channel portion 2 as described above, but the cobblestone is on the bottom portion 3 or the bottom opening of the overhanging water channel portion 2. By filling or setting other natural or artificial stone materials 12, a vegetation roll 13 in which an aggregate of natural fibers such as palm is packed, the void becomes an area suitable for inhabiting aquatic organisms, etc. It can grow aquatic plants and algae on the stone surface. It is as shown in FIG. 12 and the like that the above-mentioned filling material is properly held by providing the piles 11 and other supports at the boundary between the water channel portion of the main body of the block 1a and the overhanging water channel portion 2. It should be noted that the opening 6 of the overhanging water channel portion 2 is also appropriately closed with the cultivated soil or the filling stone material 12 as shown in FIG.
14, and the overhanging waterway part 2 facing both sides of the waterway.
The laying state in the case of having the structure is as shown in FIG.

16 to 20 show modified examples of the concrete block according to the present invention. That is, the one shown in FIG. 16 is one in which a curved overhanging water channel portion 21 is formed, and the one in FIG. 17 is one in which the entire length region of the concrete block 1a is used as the overhanging water channel portion 22 and the closing wall 23 is formed at the end face portion. . 18 and 19 show a narrow inlet portion 20 in which the inlet portion of the overhanging water channel portion 2 is narrowed, and it is possible to form a stagnation portion where the flow velocity in the block 1 main body is appropriately reduced. The concrete block 1 shown in FIG. 20 has a partial overhanging water channel portion 24 formed at the side wall end portion of the concrete block 1. By constructing such concrete blocks 1a so as to be connected to each other, a two-part concrete block 1a is formed. 1a is formed so as to form one overhanging water channel portion.

21 and 22 show the case where the concrete blocks are divided into two parts along the axial direction of the side wall portions, that is, the concrete blocks 1a are formed by the divided blocks 25 and 25a. A connecting portion 26 is provided at the bottom of each of the divided blocks 25 and 25a, and the connecting portions 26 and 26 are connected to each other.
As shown in FIG. 2, the connecting concrete 27 is poured to form a water channel having a width according to each construction condition, but the overhang water channel portion 2 according to the present invention is as described above. It is formed on either one or both of the divided blocks 25. Various L shapes can be adopted according to the application. Further, as shown in FIGS. 50 and 51, which will be described later, the intermediate portion can be made as a split concrete block having a multi-section by using an I-shaped or inverted T-shaped distribution wall having a connecting portion on the bottom surface.

23 to 25 show the case of using the separately molded overhanging water channel portion body 2a, and the notch opening 7 is formed in one side wall (or both side walls) of the concrete block 1 as shown in FIG. In the block 1b shown in FIG.
Join the separately molded overhanging water channel body 2a as shown in FIG.
Which is appropriately connected and fixed using a connecting member 8,
In this product, a concrete block 1b and a separately molded overhanging water channel portion 2a are separately molded, and a product can be mass-produced. In the overhanging water channel portion 2a, the bottom portion 3 is appropriately used as the opening portion 4,
Further, the use of the lid portion 5 or the lid portion body 5a is the same as in the case of FIGS.

FIG. 26 shows the details of the mounting structure by the connecting member 8 as described above. Although it is firmly connected by using the stator 9 or the like, it can be simply pressed by earth pressure without connecting. The good is clear. Further, FIG. 27 shows another example of the separate molded overhanging water channel portion body 2a, and FIG. 28 shows a cross section of the water channel set by using those of FIGS. Is a separate molded overhanging water channel 2a
Is at least suitable for manufacturing so that it is mounted deeper than the block 1b in a state in which the bottom portion is projected. That is, by making the overhanging bottom portion 14 of the overhanging waterway portion 2a deeper, the running water in the waterway preferentially overhangs. Even if the water level in the block 1 is low, that is, even if the water level in the block 1 becomes low, the conditions suitable for the habitation of fish and the like are maintained in the overhanging channel body 2a. Also, in consideration of the surrounding landscape, and when the amount of water is small, a rod with a stator 9 such as a log may be provided to protect the fish from wild animals in the overhanging canal, so that a beautiful and effective effect can be obtained. .

29 to 34 show another embodiment of the separate molded overhanging water channel portion body 2a as described above. That is, the one shown in FIG. 29 is an overhanging water channel body 2a having a bottom surface as an opening 4, and as shown in FIG.
By being attached to the open surface of b, a natural stone or the like is laid on the bottom surface to form an overhanging water channel portion of the bottom opening. FIG.
32 and FIG. 32 are adapted to use the lid body 5a. Either the separately formed overhanging water channel portion 2a is provided with the bottom portion 3 or the bottom portion is formed with the opening portion 4 as shown in FIG. But it is okay. 33 and 34 show a separately formed overhang water channel portion body 2a having an opening 6 at the front. When the overhang bottom portion 14 is formed in the overhang water channel portion, a U-shaped frame is formed as shown in FIG. Shape,
When the bottom portion is opened, partial connecting beams 15 are formed at the bottom portions of both side walls as shown in FIG.

35 to 37, 38, and 39 show some of the structural relations for mounting the separately molded overhanging water channel portion body 2a as described above to the concrete block 1b. That is, in FIGS. 35 and 36, two concrete blocks 1b and 1b connected to each other are fitted with the separately formed overhang water channel body 2a, and one concrete side wall of each concrete block 1b and 1b is attached. By connecting the block 1b as shown in FIG. 35 in which the partial cutout portion 16 is formed, the mounted state of the overhanging water channel body 2a as shown in FIG. 36 is formed, but of course, as shown in FIG. The block 1 can also be attached so as to surround the notch 17 formed in the side wall of the middle portion thereof.

Further, the separately molded overhang water channel body 2 according to the present invention.
38a is attached in the same manner as in FIG. 36 as shown in FIG. 38, but between the two connected concrete blocks 1 and 1, a partial cutout 16 is formed in only one of the concrete blocks 1 to form the water channel body 2a. Alternatively, as shown in FIG. 39, a vertically U-shaped overhang water channel portion 2a may be attached as shown in FIG. 33 or 34.
Note that, as shown in FIG. 40, separate molded overhang water channel portions 2a ′ and 2a ′, which are divided into two parts and are divided in the middle, are used as shown in FIG.
3 or more concrete blocks 1b,
1, 1b crotch to the middle concrete block 1
Long overhang water channel part 2 in which partial cutout parts 16 are formed and connected in end concrete blocks 1b and 1b sandwiching a
a'can be formed.

According to the present invention, as shown in FIG. 42, an obstacle 18 such as a pile is provided in the vicinity of the overhanging water channel portion 2 or overhanging water channel portion body 2a so that the water flow in the block 1b can be changed as indicated by the arrow. It can be changed and can diversify the water flow in the overhanging canal part or contribute to the formation of stagnation.

FIGS. 43 and 44 show FIGS. 21 and 2 described above.
In the concrete block using the divided block 25 and the divided block 25b having the intermediate cutout portion as shown in FIG. 2, the case where the separate molded overhanging water channel portion body 2a is used is shown. That is, the connection part 26 is formed on the divided blocks 25 and 25b and connected by the connection concrete 27.
1 and 22 and one divided block 25
An intermediate cutout portion 17 is formed in b, and the separately formed overhang water channel portion body 2 a is attached to the intermediate cutout portion 17. FIG.
0, as will be described later with reference to FIG.
It is needless to say that a shunt wall is provided to form a shunt concrete block, and various shapes can be adopted for the overhang water channel portion 2a.

45 to 50 show that the overhanging water channel portion 2 is formed at the top of the concrete block 1 or the overhanging water channel portion body 2a is provided. That is, FIG. 45 shows the case where the overhanging water channel portion 2 is integrally formed over the entire length on one side of the top portion of the concrete block 1a.
6 and FIG. 47, the overhang water channel portion bodies 2a and 2a are separately formed.
FIG. 48 shows the state in which the overhanging water channel portion body 2a of FIGS. 46 and 47 is set on the mounting step portion 28 formed on one side of the concrete block 1b and on the opening portion formed on the other side. Has been done. In the case described above, it is possible to open the bottoms of the overhanging water channels 2 and 2a and provide a lid on the top to make the length shorter than the product length and to form a concrete block or a divided block over the middle portion or two blocks. Is the same as.

FIG. 49 shows a state in which a log-shaped body 33 made of a real wood or a pseudo wood such as concrete is installed on the mounting step portion 28 shown in FIG.
By doing so, it is possible to make the part of the waterway above the water surface closer to the natural landscape.

Further, FIG. 50 shows a construction state in which the construction shown in FIG. 49 is laid and set, but a flow path is formed with the mounting step portion 28 of the concrete block 1 at the water surface level, and the separate molded overhang water channel body 2a. As in the case described above, the vegetation roll 13 is provided in the inside so that it can be appropriately used as a growth area for fish and other aquatic organisms or plants, as described above. Further, the stator 9 such as a log can be installed on the upper surface of the mounting step portion 28 in consideration of the surrounding landscape.

51 and 52 are concrete blocks for a water channel in which the overhanging water channel portion 2 according to the present invention has a flow dividing wall 30 in the middle, and FIG. 51 shows the flow dividing wall 30 integrally formed. Is shown divided into parts. That is, the concrete block 1 has the shunt wall 30 in the middle.
Are formed, one of which is an irrigation channel 31 and the other of which is a drainage channel 32.
Alternatively, the overhanging water channel portion 2 is formed in the irrigation channel 31 together with the drain channel 32, and a configuration having the same operation as that described above can be obtained. Needless to say, the overhanging water channel 2 can be constructed in various ways as in the case described above.

Further, FIGS. 53 and 54 show the case where various types of makeup are applied to the upper side wall or inside the side wall of the concrete block 1 according to the present invention. That is, FIG. 53 shows an example in which a plate-shaped wood grain pattern 34 is applied to the upper part of the side wall. Normally, by applying such a wood grain pattern 34 to the portion above the water surface of the waterway, it is exposed to the human eye. The part can be in a state that better matches the surrounding environment.
Further, FIG. 54 shows a case where the tile pattern 35 is formed inside the side wall, and in this case as well, it is possible to form a water channel suitable for the landscape of the installation location.

The present invention as described above is a water channel in which a large number of concrete blocks are connected to each other to supply or discharge water to the fields, and any of the concrete blocks connected as described above. In the concrete block facility, the overhanging water channel portion projecting to the side of the concrete block is arranged and formed at a required interval to form a rest and habitat for fish and other aquatic organisms in the entire water channel system. Therefore, it is an equipment that does not need to worry about weeding and cleaning, but forms an irrigation water / drainage channel that is in harmony with nature and has been familiar with aquatic life and plants from ancient times.

A water channel block having a U-shaped cross section, which is formed at a desired position in an irrigation water channel by forming an overhanging protrusion formed by bending a side wall to the side of the block. By appropriately forming the overhanging water channel portion, the above-described action can be effectively obtained.

Even when the water in the waterway decreases due to the bottom surface of the overhanging projection being lower than the bottom surface of the block body, the viable state of aquatic organisms is continuously maintained in the overhanging projection part. Excuse me.

By covering the top surface of the overhanging protrusion, aquatic organisms growing on the overhanging protrusion are protected from external enemies such as birds, and safe growth is enabled.

Since the projecting end surface of the overhanging projecting part is opened, the inside of the waterway and the fields are directly connected by cultivated soil or natural stone, and various aquatic organisms can come and go like the old waterway. Or you can hibernate in the soil, which helps preserve the species.

By forming a projecting part from the side wall of the concrete block at the entrance part of the overhanging projecting part and forming a narrowed entrance part, the influence from the external water channel is reduced and a quiet aquatic life area is formed. To do.

It is suitable for the growth of fish and other aquatic organisms by filling the bottom of the overhanging protrusion with a setting material such as stone material, fiber material and the like. And the like are formed as preferable conditions.

Blocks for a water channel having a U-shaped cross section are set so as to face each other with an interval corresponding to the width of the channel requiring an L-shaped member, and are connected to each other. Due to the formation, a water channel having a required width can be appropriately formed and constructed, and the characteristics of the present invention as described above can be effectively obtained.

By forming an opening on the side wall of a concrete block formed to have a U-shaped cross section and attaching a separately formed overhanging portion body to the opening to form an overhanging protrusion. The advantages of the present invention as described above can be appropriately obtained by the concrete body efficiently produced by the simple production operation.

Since the overhanging body is divided into a plurality of pieces, a relatively large overhanging waterway portion can be easily formed to form a waterway system suitable for habitation of aquatic organisms.

Since the overhanging water channel portion is formed in a crotch shape on the plurality of side groove bodies connected to each other, a long and wide overhanging water channel portion is accurately configured and conditions suitable for the growth of aquatic organisms are formed. To do.

It is sufficient that the overhanging water channel portion is formed by projecting in a crotch manner on three or more concrete blocks, and an opening communicating with the overhanging water channel portion is formed in the concrete blocks sandwiching the intermediate concrete block. A long overhanging canal is formed to form an irrigation canal suitable for the growth of fish.

By forming an engagement step at the bottom of the overhanging water channel portion and engaging with a locking step portion formed on one side of the water channel block, the water channel block is formed separately. The flood channel portion is set effectively and stably, and the characteristics of the present invention as described above are effectively exhibited.

[0052]

According to the present invention as described above, in the irrigation water / drainage channel for supplying / draining the fields, the complicatedness of weeding and cleaning is properly eliminated, and the deformation / expansion of the channel is effective. In addition, it effectively forms and maintains a natural environment suitable for the rest and spawning of fish and other aquatic organisms that have come upside down from rivers, etc., and promotes good waterfront connection with the ecosystem. It is an invention that has a large effect industrially because it is used.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a concrete irrigation canal according to the present invention.

FIG. 2 is a perspective view showing the structure of a concrete block according to the present invention.

FIG. 3 is a perspective view showing the configuration of the concrete block according to the present invention in which the bottom portion of the overhanging water channel portion is an opening.

FIG. 4 is a perspective view showing the configuration of the concrete block according to the present invention shown in FIG. 4 in which a lid is provided on the top of the overhanging water channel.

5 is a perspective view showing a configuration of the concrete block according to the present invention shown in FIG. 4 in which the bottom portion of the overhanging water channel portion is not an opening portion.

FIG. 6 is a perspective view showing the configuration of the concrete block according to the present invention in which the lid portion of the overhanging water channel portion is formed separately.

FIG. 7 is a perspective view showing a configuration in the case where an overhanging water channel portion is formed on both side walls of a concrete block according to the present invention.

FIG. 8 is a perspective view showing the structure of the concrete block according to the present invention when the end of the overhanging waterway is an open mouth.

9 is a perspective view showing the configuration of the concrete block according to the present invention shown in FIG. 8 when the bottom of the overhanging water channel is an opening.

FIG. 10 is a cross-sectional view of a water channel formed by the concrete block of the present invention.

FIG. 11 is a transverse cross-sectional view of a water channel formed of the concrete block of the present invention in which the lid is formed separately.

FIG. 12 is a transverse cross-sectional view of a water channel formed of the concrete block of the present invention in which a lid is integrally formed.

FIG. 13 is a cross-sectional view of a water channel formed by the concrete block of the present invention in which the end of the overhanging water channel portion is open.

FIG. 14 is a transverse cross-sectional view showing a state in which a support material such as a pile is driven into the end opening of the overhanging water channel portion in the water channel shown in FIG.

15 is a transverse cross-sectional view showing a laid state of a water channel formed of the concrete block shown in FIG.

FIG. 16 is a perspective view showing a configuration of a concrete block according to the present invention provided with a curved type overhanging waterway portion.

FIG. 17 is a perspective view showing the configuration of a concrete block according to the present invention provided with a full-length region overhanging canal portion.

FIG. 18 is a perspective view showing the configuration of a concrete block according to the present invention in which a narrow inlet portion is provided in the overhang waterway portion.

19 is a perspective view showing the configuration of a concrete block according to the present invention in which a narrow inlet portion is provided in the full-length region overhanging channel portion shown in FIG.

FIG. 20 is a perspective view showing the configuration of a concrete block according to the present invention provided with a partial overhanging water channel portion.

FIG. 21 is a perspective view of a concrete block configuration example of the present invention in the case of using facing two-part bodies.

22 is a perspective view of a water channel portion formed using the concrete block of the present invention shown in FIG.

FIG. 23 is a perspective view of the block main body of the present invention in which the overhanging water channel portion is formed as a separate molded body.

FIG. 24 is a perspective view showing a configuration of an overhanging water channel part when the overhanging water channel part is formed by a separate molded body.

FIG. 25 is a perspective view showing a configuration of a concrete block of the present invention formed by assembling the overhang water channel portion when the overhang water channel portion is formed as a separate molded body.

26 is a partial cross-sectional view of the connecting portion shown in FIG. 25.

FIG. 27 is a perspective view showing another configuration of the overhang water channel portion.

28 is a transverse cross-sectional view of an irrigation canal formed using the overhanging canal part shown in FIG. 27.

FIG. 29 is a perspective view showing the configuration of an overhanging water channel portion having a bottom portion as an opening.

30 is a cross-sectional view of a water channel formed using the overhanging water channel portion shown in FIG. 29.

FIG. 31 is a perspective view showing a configuration of an overhanging water channel part in which a lid part is separately formed.

FIG. 32 is a perspective view showing a configuration of an overhanging water channel part in which a lid part is a separate body and a bottom part is an opening part.

FIG. 33 is a perspective view showing an overhanging water channel portion having an open end.

FIG. 34 is a perspective view showing an overhanging water channel portion configured such that an end portion is an opening and a bottom portion is an opening.

FIG. 35 is a perspective view showing an example of a concrete block body having a partial cutout portion to which the overhanging water channel portion as described above is applied.

FIG. 36 is a perspective view showing a state where the concrete blocks of FIG. 35 are connected to each other and the overhanging water passage portion is attached.

[Fig. 37] Fig. 37 is a perspective view showing a state of a concrete block for a water channel in which a separately formed overhanging water channel section is attached to an intermediate cutout section to form a narrow inlet section.

FIG. 38 is a perspective view showing a state of a concrete block for a water channel in which a separately formed overhanging water channel section is attached to a partial cutout portion to form a narrow inlet section.

[Fig. 39] Fig. 39 is a perspective view showing a state of a concrete block for a water channel in which a separately formed overhanging water channel section having an open end is attached to an intermediate cutout section.

[Fig. 40] Fig. 40 is a perspective view showing a configuration example of a plurality of overhanging water channel portions.

41 is a perspective view showing a state of a water channel block to which the overhanging water channel portion of FIG. 40 is attached.

FIG. 42 is a plan view showing a modified example of a part of the water channel according to the present invention.

[Fig. 43] Fig. 43 is a perspective view showing an example of a case where an intermediate cutout portion is provided in the split type water channel portion body.

FIG. 44 is a sectional view showing a main part of a water channel according to the present invention formed using the water channel body.

FIG. 45 is a perspective view of what is integrally molded with the water channel body by shallowing the overhanging water channel according to the present invention.

FIG. 46 is a perspective view showing an example of a separately formed overhang water channel portion.

FIG. 47 is a perspective view showing another example of the separately formed overhang water channel portion.

48 is a perspective view showing a state where the overhanging waterway portion of FIG. 46 is attached to a waterway concrete block. FIG.

49 is a perspective view showing a state in which a log-shaped body is installed on the concrete block for a water channel shown in FIG. 48.

50 is a transverse cross-sectional view of the water channel showing the laid state of the concrete block for water channels shown in FIG. 49. FIG.

[Fig. 51] Fig. 51 is a perspective view showing a case in which an overhanging water channel portion is formed only on one side of an integrally formed diversion wall in a concrete block for a water channel in which a diversion wall is formed according to the present invention.

[Fig. 52] Fig. 52 is a perspective view showing a case where, in the concrete block for a water channel in which the flow dividing wall is formed according to the present invention, the overhang water channel portions are formed on both sides of the flow dividing wall formed by the division.

FIG. 53 is a perspective view showing a case where a plate-shaped wood pattern is provided above the side wall of the concrete block of the present invention.

FIG. 54 is a perspective view showing a case where a tile pattern is formed on the inner surface of the side wall of the concrete block of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete block 1a Concrete block with overhanging water channel part 1b Concrete block with notch opening 2 Overhanging water channel part 2a Separately molded overhanging water channel part body 3 Bottom part 4 Opening part 5 Lid part 5a Lid part body 6 Opening port 7 Notch opening 8 Connection members 9 Stators such as logs 10 Irrigation canals 11 Support materials such as piles 11a Support materials such as logs 12 Natural or artificial stone materials 13 Vegetation bags or vegetation rolls 14 Overhanging bottom 15 Connecting beams 16 Partial cutouts 17 Intermediate cutouts 18 Obstruction 20 Narrow entrance 21 Curved overhanging channel 22 Full length area Overhanging channel 23 Blocking area 24 Partial overhanging channel 25 Divided block 25a Divided block with overhanging channel 25b Intermediate cutout Divided block 26 Its connecting part 27 Connected concrete 28 Mounting step 29 Dividing concrete block 30 shunting wall 31 canals 32 drainage 33 log-like member 34 grain pattern 35 tile pattern

Claims (11)

[Claims] 1. A water channel for connecting or disconnecting a large number of concrete blocks to supply or discharge water to a field, and in any of the concrete blocks connected as described above, a side of the concrete block. A concrete irrigation canal, characterized in that projecting overhanging canals are arranged at a predetermined interval. 2. A water channel block formed with a U-shaped cross section or a flow dividing wall, wherein the side wall of one side or both sides of the block is a projecting protrusion formed by bending a side wall of the block. Concrete block for irrigation canals, characterized by being formed to have the same or different depth as. 3. The concrete block for an irrigation canal according to claim 2, wherein a top surface of the overhanging protrusion is covered. 4. The concrete block for irrigation canals according to claim 2, wherein the projecting end surface of the projecting projecting portion is opened. 5. The narrowed entrance portion is formed by forming a projection portion from a concrete block side wall at the entrance portion of the overhanging projection portion, according to any one of claims 2 to 4. Concrete block for irrigation canals. 6. The concrete block for irrigation canals according to claim 2, wherein the bottom of the overhanging protrusion is filled with a setting material such as stone material or fiber material. 7. A channel block having a U-shaped cross section or a flow dividing wall is connected so as to face each other with an interval corresponding to the channel width which requires an L-shaped member, and is connected to one of the L-shaped members or The block for concrete irrigation canals according to any one of claims 2 to 6, wherein projections are formed on both sides. 8. An overhanging protrusion is formed by forming an open part on one or both side walls of a concrete block formed by providing a U-shaped cross section or a dividing wall, and attaching a separately formed overhang part body to the open part. The concrete block for irrigation canals according to any one of claims 2 to 7, wherein the concrete block is formed. 9. The irrigation system according to claim 8, wherein the overhanging portion body is divided into a plurality of pieces, or is formed in a crotch shape on a plurality of side groove portion bodies to which the overhanging water channel portion is connected. Concrete block for waterways. 10. The overhanging water channel portion is formed so as to protrude from three or more concrete blocks, and an opening communicating with the overhanging water channel portion is formed in the concrete blocks sandwiching the intermediate concrete block. The concrete block for irrigation canals according to claim 9. 11. An engagement step is formed at the bottom of the overhang water channel portion,
The concrete block for an irrigation canal according to claim 2, wherein the engagement step is formed on one side of the waterway block.