JPS60258316A - Water level holding and regulating device for paddy field - Google Patents

Abstract

PURPOSE:To perform a simple cut-off work, by a method wherein plural water level holding members are pressed against the slope of a footpath, in a condition that they are connected to each other, to lock them, a water level regulating body is buried in a footpath, and a cut-off plate is insertable engaged. CONSTITUTION:Water level holding members 1 formed about in a chevron-shape are aligned along a slope 5 of a foot path, and are connected to each other in a manner that a joint part 3 of the one holding member 1 is engaged with a joint part 3' of the other holding member 1. A water level regulating body 7 formed about in an U-shape is buried in the direction of width of a footpath, and a cut- off plate is engaged with engaging parts 7c. This eliminates a work to coat mud on the footpath, enabes prevention of collapse of the footpath even when there is a heavy rainfall, and since water stopping is perfect, ensures growth of rice plants even during deficiency in water.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a water level holding and adjusting device used to hold and adjust the water level in a rice field.

(Technical background of the invention and its problems) Conventionally, mud was applied to the slopes of rice field ridges (also called rice paddies) to stop water and prevent the growth of weeds. However, simply applying mud to the slopes in this way does not completely stop water, and moles, rats, crayfish, etc. can easily make holes in the ridges, allowing water from the rice fields above to drain to the bottom. It leaks into the rice fields. Also, during heavy rain, the mud washes away, so it is necessary to reapply the mud, and the ridge itself has the disadvantage of collapsing.

Recently, various types of agricultural work have been mechanized,
Applying mud to the sloped surface must be done manually, as in the past, and is very labor intensive. Especially now that the number of farmers is decreasing, this work is mainly carried out by the elderly.Also, with the number of farmers who only work on Saturdays and Sundays (sideline farmers) increasing, it is easy to stop the water supply. A means that allows for easy water level adjustment is desired.

Additionally, conventionally, trenches are dug in the ridges and used as drainage holes, but such drainage holes can easily become blocked by debris, causing the water level in the rice fields above to rise and, conversely, to cause heavy rain. When it rains, the ridges collapse, causing water from the rice fields above to flow into the rice fields below, making it very difficult to adjust the water level.

In order to prevent the ridges from collapsing, long vinyl acid plates or films are embedded along the ridges, but with this method, not only is the embedding process extremely troublesome, but it is also impossible to adjust the water level. It is.

(Object of the Invention) The object of the present invention is to be able to completely stop water and prevent the growth of weeds with a simple operation, to easily adjust the water level, and to effectively prevent the collapse of ridges. The purpose of the present invention is to provide a water level maintenance and adjustment device for rice fields.

(Summary of the Invention) The present invention involves arranging a plurality of water level holding members having reinforcing ribs by locking them on the inclined surface of a ridge, connecting adjacent water level holding members to each other, and forming a U-shaped structure on the ridge. It is characterized in that a water level adjusting body is buried to communicate the upper and lower rice fields, and a water stop plate is removably attached to the water level adjusting body, thereby adjusting the water level while maintaining the water level in the rice field.

(Embodiments of the Invention) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The water level holding/adjusting device according to the present invention includes a water level holding member 1, as shown in FIGS. 1 to 3. This water level holding member l has a rectangular main body LA made of a plate material, and the main body IA has large and small reinforcing ribs 2 arranged at equal intervals along the length direction.
．． 2' are provided alternately, and joint parts 3.3' are provided on both sides.
is formed. One joint part 3 is bent into a step shape as shown in Fig. 85, and the other joint part 3
' simply protrudes from the reinforcing rib 2 located at one end and is formed integrally with the main body LA. An extension part 4 that is engaged with the ridge is integrally formed at the upper end of the main body IA.
It has an angle θ of 00.

FIG. 6 shows how the water level holding member 1 is used. That is, the main body IA is locked on the inclined surface 5 of the ridge with the reinforcing rib 22 2' pushed in, and the extension part 4 is on the ridge path 6.
is locked. In this case, the water level in the paddy field is approximately 50 mm.
Since the cultivation depth is approximately 200 J, the height dimension of the main body IA of the water level holding member 1 attached to the slope 5 on the lower side of the water is 350 to 4.
50+am range. In addition, the lengthwise dimension of the main body IA should be 600 to 2000 layers in consideration of portability, etc., and the thickness should be about 3 m+m in terms of economy and strength. Furthermore, the locking length of the extension part 4 to the ridge is 30 to 70 m.
m is good, and 70 m+s is appropriate to prevent weeds on the ridge from entering the rice fields. On the other hand, it is installed on the inclined surface 5 on the water side.

As the water level holding member 1', the height dimension of the main body 1'A is 35
0-600mtx, locking length of extension part 4' is 20! ll
! About 1 is enough.

A plurality of the water level holding members 1 (1') are arranged in a line along the slope 5, and adjacent water level holding members 1.1 are different from one water level holding member 1, as shown in FIG. The joint part 3 is engaged with the joint part 3' of the other water level holding member 1, so that they are connected to each other. Therefore, the water level holding member 1
．． Not only will water from the paddy field no longer infiltrate into the ridges, but moles, etc. will no longer make holes in the ridges, and even if it rains heavily, the water level retaining member l will receive the water directly, preventing the ridges from collapsing. can also be prevented.

Therefore, it is possible to completely cut off the water in the rice field and maintain the water level. Furthermore, since the extension portion 4 can prevent weeds from growing on the ridge, weed removal work is no longer necessary, and the growth of rice can be promoted.

7(a), (b) and FIG. 8(L), (b) respectively show a water level holding member 1 for use at a corner of an inclined surface. The water level holding member 1 shown in FIG. 7 has one side of the main body IA formed into an inclined shape corresponding to the inclination angle of the inclined surface.
A joint portion 3 protruding in the thickness direction of the main body IA is formed on the inclined side surface. Further, the water level holding member l shown in FIG. 8 is formed such that one side opposite to the main body IA is inclined;
A joint portion 3' is formed along the inclined side surface. Therefore, by making the water level holding member 1 shown in FIG. 7 and the water level holding member 1 shown in FIG. Water should be shut off in the area.

Can be done.

The water level maintenance and adjustment device according to the present invention is shown in FIGS. 9 and 10.
As shown in the figure, a water level regulator 7 buried in the width direction of the ridge
Equipped with This water level regulator 7 is.

It is formed into a substantially U-shaped cross section, and has an integrally formed flange portion 7a at the upper end that is engaged with the ridge 6, and a plurality of reinforcing ribs 7b are provided on the outer wall surface. Fitting portions 7c, 7c for fitting the water stop plate 8 (see FIG. 11) are provided on the water collection port side of the water level regulator 7, and these fitting portions 7c, 7
The joint portions 3 (3') of the water level holding member 1 on the lower side described above are connected to each of the joint portions 7d and 7d near c.

Other joint parts 7e, 7e are provided on the drain outlet side of the water level regulator 7, and protrude along the slope of the ridge 6, and these joint parts 7e, 7e are equipped with the above-mentioned water level holding member l on the water side. The joint portion 3 (3') is connected. As shown in FIGS. 11(a) and 11(b), the water stop plate 8 includes a plate-shaped main body 8A, a plurality of large and small reinforcing ribs 8a, and a flange portion 8b at the upper end. Therefore, by fitting the main body 8A of the water stop plate 8 into the fitting parts 7c, 7c of the water level regulator 7 buried in the ridge, it is possible to reliably prevent the flow of water between the upper and lower rice fields. Water stops completely. Then, the water stop plate 8 is removed from the insertion part 7C17C, water is allowed to flow from the upper rice field to the lower rice field, and when a predetermined water level is obtained, the water stop plate 8 is refitted into the insertion part 7C17C. You can easily adjust the water level in the rice field.

Note that a lid is normally attached to the upper part of the water level regulator 7 via a flange portion 7a.

FIGS. 12(a) and 12(b) show a drain channel body 9, which has a substantially U-shaped cross section, has reinforcing ribs 9a formed on its outer wall surface, and has reinforcing ribs 9a at its upper end. The flange portion 9b is integrally provided.

When the width of the ridge in which the water level regulator 7 is buried is large, the drain channel body 9 is buried in the ridge while being connected to the drain port of the water level regulator 7, and is used for drainage. Furthermore, the first
In FIG.
O is shown and this Ml.

0 is provided with a large number of reinforcing ribs lOa intersecting with each other.

In the above embodiment, the joint portion 3 of the water level holding member 1
As for (3'), a dovetail structure may be used as shown in FIGS. 14(a) to 14(c), and in this case, the connection of the water level holding member 1 becomes more complete.

Note that the water level holding member 1, the water level adjusting body 7, the water stop plate 8, etc. are made of a plastic material such as polypropylene.
It may also be formed from metal.

(Effects of the Invention) As explained above, according to the present invention, a plurality of water level holding members are mutually connected to and pressed against the slopes of the ridges to lock them, and a water level adjusting body is buried in the ridges to stop water. By fitting the plates in a removable manner, it is possible to stop the water in the paddy field, maintain and adjust the water level easily and reliably. This eliminates the need for the conventional work of applying mud to the ridges, and prevents the ridges from collapsing even during heavy rain.Furthermore, water is completely cut off, ensuring the growth of rice even in times of water shortage. It is easy to use and requires fewer rounds to check the water level. Further, since the extension portion of the water level holding member is locked to the ridge to prevent weeds from growing, it is possible to promote the growth of rice without having to remove them.

[Brief explanation of the drawing]

1 to 3 are a front view, a plan view, and a side view of the water level holding member according to the present invention, FIG. 4 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 5 is a plan view showing the joint part. , FIG. 6 is a diagram showing how the water level holding member of FIG. 1 is used, FIG. 7(a), (
b) and FIGS. 8(a) and (b) are respectively a front view and a plan view of a water level holding member used at a corner, and FIGS. 9 and 10 are a plan view and a front view of a water level adjusting body according to the present invention. , Figure 11 (
a) and (b) are the front view and plan view of the water stop plate, and Fig. 12 (a)
), (b) are a plan view and a front view of the drain channel body, FIG. 13 is a plan view showing a lid for attaching to the drain channel body in FIG. 12, and FIGS. 14 (a), (b), (C) is a plan view showing another joint structure. ■, 1'-----1 water level holding member, IA, 1'A----1 main body, 2.2', 1Oa--1 reinforcing rib, 7b, 8a, 9 a--tt 3.3', -1111 joint part, 7 d, 7 e -------tt 4.4'-----1 extension part, 5-----～----slanted surface, 6----, ------One ridge, 7-------Water level regulator, 7a, 8b, 9b--Fuji 7 part, 7cm--1--Inset part, 8---- ----1 Water stop plate, 9----1------ Drain body, Fig. 1 Fig. 2/IA Fig. 3 Fig. 4 Fig. 6 Fig. 7 (a) A (b) Figure 48 A (b) Figure 9 Figure 10 Figure 7 re 7e (b) 8o a. Figure 12 (0) Figure 13 Figure 14

Claims (1)

[Scope of Claims] 1. It is anchored to the slope of the ridge of the paddy field, has a plurality of reinforcing ribs pushed into the slope at the center, has joints formed on both sides, and extends to the ridge at the upper end. A substantially 〈-shaped water level holding member with an integrally formed extension portion, which is buried in the ridge to communicate the upper and lower paddy fields, has a water stop plate removably attached thereto, and is connected to the water level holding member. 1. A water level holding and adjusting device for a paddy field, comprising: a water level adjusting body having a substantially U-shaped cross section. 2. A large number of the water level holding members are arranged along the slope, and adjacent water level holding members are the joints. The water level maintenance Φ adjustment device for a paddy field according to claim 1, characterized in that the device is connected to each other via a portion. 3. The paddy field water level maintenance/adjustment device according to claim 1, wherein the water collection port and the drainage port of the water level adjustment body are connected to water level maintenance members located on both sides. 4. The water level holding/adjusting device for rice fields according to claim 1, wherein the water level adjusting body and the water level holding member are made of either a plastic material or a metal material.