JP4134070B2 - Underground irrigation drainage underdrain - Google Patents

Description

  The present invention relates to an underground irrigation drainage culvert device, and more particularly to an underground irrigation drainage culvert device that facilitates field conversion in a cultivated area.

  Conventionally, conversion from paddy field to paddy field or from paddy field to paddy field has been difficult due to different water level conditions between paddy field and paddy field. A culvert pipe device consisting of a pipe with a hole was buried, water was supplied to the ground from this culvert pipe device, and the water level of the cultivated area could be adjusted by draining from the ground, making it possible to convert fields. .

  FIG. 10 shows a conventional culvert pipe device, wherein 1 is one of the two farm roads in parallel and the other two, 2 is a fence adjacent to each of the farm roads 1 and orthogonal thereto, and 3 is a fence 2 adjacent to the farm road 1. Cultivated area divided by the fence 2 orthogonal to the farm road 1, 4 is a water channel provided along the fence 2 adjacent to the one farm road 1, 5 is along the fence 2 adjacent to the other farm road 1 The provided drainage channel, 6 is buried in the center of the cultivated area 3, a finite length water collecting pipe parallel to the irrigation channel 4, 7 is embedded in the center of the cultivated area 3, A drainage collecting pipe having a finite length parallel to the drainage channel 5, 8 is a water supply pipe connecting the waterway 4 and the water supply collecting pipe 6, 9 is a water supply control device provided in the water supply pipe 8, and 10 is the drainage A drain pipe connecting the channel 5 and the drainage collecting pipe 7, 11 is a drain control provided in the drain pipe 10. Location, 12 is a plurality of underdrain pipe having small holes along the length of the pipe connecting the said water supply collecting pipe 6 and the drainage collecting pipe 7.

In the conventional culvert pipe device, the water supply control device 9 and the drainage control device 11 are controlled, and water is supplied and drained from the culvert pipe 12 in the ground in the cultivated area 3. Set the water level arbitrarily. Such a conventional underdrain pipe device is described in cited document 1.
JP 2004-244893 A

  However, even if the field conversion becomes possible, in order to convert from paddy fields to upland fields, it is necessary to dig agate around the cultivation area, and in the opposite case, it is necessary to back up the alum. There was a drawback that it was not easy.

  In addition, when lucid was made, the acreage area of lucid was reduced.

  In addition, when changing from field to paddy field, there was a risk that the rice planting machine would get stuck in the back of the clear agate.

  The present invention eliminates the above-mentioned drawbacks.

  The underground irrigation drainage culvert of the present invention is a culvert composed of a pipe having a hole along the longitudinal direction of the pipe embedded in the periphery of the cultivated area, a water supply control device communicating with the culvert and the upper surface of the cultivated area, and The drainage control device comprises a holeless pipe having one end communicating with the water supply control device and the other end communicating with the drainage control device.

  The water supply control device has a water level control means.

  Further, the drainage control device has a water level control means.

  Further, the holeless pipe is characterized in that the water supply control device is gradually inclined downward toward the drainage control device.

  Further, the present invention is characterized by having a branch culvert composed of a pipe having a hole along the longitudinal direction of the pipe that connects the culvert portion on the water supply control device side and the culvert portion on the drainage control device side.

  Further, at least one of the culvert and the branch line culvert is characterized in that a central portion thereof is high and bent into a mountain shape.

  Moreover, the surface center part of the said cultivation area was raised compared with the peripheral part, It is characterized by the above-mentioned.

  According to the underground irrigation drainage culvert of the present invention, it is possible to arbitrarily set the water level in the cultivated area, and even when changing from paddy fields to upland fields, it is not necessary to dig alum around the cultivated area, In the opposite case, it is not necessary to refill the lucidity, which makes it easier to convert fields and allows rotations to be carried out systematically.

  Moreover, since the pipe without a hole which inclines downward gradually which connects a water supply control apparatus and a waste_water | drain control apparatus was provided, rapid water supply / drainage is attained.

  In addition, the culvert, branch line culvert and the central part of the surface of the cultivated area are raised compared to the peripheral part, so that quick drainage is possible and the exposure of the surface of the cultivated area can be reduced.

  Embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the underground irrigation / drainage culvert of the present invention has an annular groove 13 having a depth of about 1 m provided around the cultivation area 3 and a longitudinally arranged horizontally at the bottom of the annular groove 13. An annular culvert pipe 14 having a small hole along the direction, and a linear groove 15 having a depth of about 1 m connecting the center of the annular groove 13 on the water channel 4 side to the center of the groove on the drainage channel 5 side; The straight culvert pipe 16 having a small hole along the longitudinal direction of the pipe disposed in the groove 15, the hydrophobic material 17 such as a shell filled in the grooves 13, 15, and the water from the irrigation channel 4 Is introduced to the upper surface of the cultivation area 3, or a water supply pipe 18, a water supply port 19 provided on the side of the water channel 4 of the annular underdrain pipe 14, and a water supply control device 20 provided between the water supply port 19 and the water channel 4. And a drain outlet provided on the drain channel 5 side of the annular underdrain pipe 14 1, a drainage control device 23 provided between the drainage port 21 and the drainage channel 5, and the water supply control device 20 and the drainage control device 23 are connected to the drainage control device 23, for example, 40 cm / 100 m. And a holeless water supply / drainage pipe 25 inclined downward with a slope of.

  As shown in FIGS. 1 and 2, the water supply control device 20 is provided on the side wall of the water inlet 26, which is embedded in the water bottle 2 and has an open upper surface, and the water inlet 26 facing the groove 13. The opening 27 is opened, and the partition plate 28 is movable up and down to close the opening 27 from the bottom to a desired height.

  The water supply port 29 of the water supply / drainage pipe 25 communicates with the inside of the water inlet 26 through the opening 27 of the water inlet 26.

  As shown in FIGS. 1 and 3, the drainage control device 23 includes a partition wall 33 that partitions the interior 31 embedded in the basket 2 and having an open upper surface from the cultivation area 3 side and a partition wall 34 that partitions the drainage channel 5 side. A box-shaped drainage basin 30 and first and second partition plates 35 and 36 that partition the interior 31 of the drainage basin 30 from the partition wall 34.

  The drainage port 22 of the underdrain pipe 16 and the drainage port 37 of the water supply / drainage pipe 25 communicate with the inside 31 of the drainage basin 30, and the inside 31 of the drainage basin 30 has a water distribution pipe 24 penetrating the wall 34. Through the drainage channel 5.

  Since the underground irrigation / drainage culvert apparatus of the present invention has the above-described configuration, in order to use the cultivated area 3 as a paddy field, when rapidly supplying water into the cultivated area 3, as shown in FIGS. Further, in the water supply control device 20, the partition plate 28 is removed from the water inlet 26 and the water inlet 26 is opened. In the drainage control device 23, the drain pipe 24 is connected by the partition plate 35. The partition plate 36 is removed from the drainage basin 30 to allow the inside of the water basin 26 and the inside of the basin 30 to communicate with each other.

  Thereby, the water 38 is supplied from the water channel 4 to the cultivation area 3 through the water supply pipe 18, and the water 38 is introduced into the culvert pipes 14, 16 through the hydrophobic material 17, and the culvert pipe It is supplied to the ground through the small holes of 14 and 16, and reaches the ground part in a saturated state. Further, the water 38 is introduced into the water supply / drainage pipe 25 through the water inlet 26 and supplied to the drainage pipe 30, while the drainage pipe 24 is blocked by the partition plate 35 as shown in FIG. Therefore, the irrigation water 38 is not discharged into the drainage channel 5 and is rapidly supplied to the cultivated area 3 as a whole.

  When irrigating the cultivation area 3 at a desired water level, as shown in FIG. 4, the opening 27 of the water inlet 26 is blocked from the bottom to a desired height by a partition plate 28. 5, the partition plate 35 is removed from the drainage basin 30, the drainage pipe 24 is opened, and the drainage side of the drainage basin 30 is partitioned by the partition plate 36.

  As a result, water 38 from the water channel 4 is supplied onto the cultivated area 3 through the water supply pipe 18, and water at a water level that exceeds the height of the partition plate 28 of the water supply control device 20 is supplied into the water inlet 26. It enters and is discharged into the drainage channel 5 through the water supply / drainage pipe 25, the drainage basin 30, and the drainage pipe 24, and the water 38 is introduced into the culvert pipes 14 and 16 through the hydrophobic material 17, On the other hand, the irrigation water 38 is not drained into the drainage channel 5 by the partition plate 36 of the drainage basin 30, so that the water level of the cultivated area 3 is reduced to the partition plate. 28 can be set to the same height.

  In addition, when irrigating the cultivation area 3 at a desired water level for use as a field, as shown in FIG. 6, the opening 27 of the water supply control device 20 is separated from the ground surface by a partition plate 28. Close to height.

  Further, when draining the cultivation area 3 in order to use the cultivation area 3 as a field, in the water supply control device 20 as shown in FIG. The opening 27 of the water inlet 26 is removed, and in the drainage control device 23, as shown in FIG. 8, the partition plate 35 and the partition plate 36 are detached from the drainage basin 30, and the drain pipe 24 is opened, and the inside of the water inlet 26 and the inside of the drain 30 are connected.

  Thereby, all the irrigation water 38 supplied from the irrigation channel 4 into the cultivated area 3 enters the drainage control device 23 through the ground surface, the culvert pipes 14, 16, and the water supply / drainage pipe 25. Water is drained into the drainage channel 5 through the drainage pipe 24, and water in the ground enters through the small holes of the culvert pipes 14 and 16, and is drained into the drainage channel 5 through the drainage basin 30, and the cultivated area. The water level in 3 can be lowered, and since it is drainage from the underground, there is no outflow of garbage and earth and sand, and there is no adverse effect on the environment.

  According to the underground irrigation drainage culvert of the present invention, the water level can be adjusted to an arbitrary height even in paddy fields or upland fields, and it is necessary to dig alum around the cultivation area even when switching from paddy fields to upland fields. In the opposite case, there is no need to refill the lucid, so there is a great advantage that the field conversion becomes easier and the rotation can be carried out systematically.

  In addition, even if the adjacent cultivated area remains a paddy field, it can be converted to a field, so there is no need to cultivate the cultivated area as a group.

  In addition, the drainage pipe 25 improves drainage, enables rapid drainage, enhances the dry soil effect, and smoothly decomposes organic matter. Therefore, even if a large amount of organic matter is added in early spring, no gas is generated and initial growth is achieved. And the difference from conventional cultivation is eliminated.

  In addition, since the rice planting machine does not get stuck in the back of the lucidum that has been backfilled, it is convenient for those who are unskilled in machine operation.

  Moreover, in order to prevent a shell from entering between the hydrophobic material 17 such as the shell and the opening 26 of the water inlet 26, a water-permeable block or the like may be inserted here.

  Moreover, you may provide multiple similar branch culverts which connect between the annular culvert pipes 14 as needed.

  In the second embodiment of the present invention, as shown in FIG. 9, at least one of the culvert pipes 14 and 16 and the branch culvert is formed by a pipe having a high central portion and bent in a mountain shape. The center part of the surface of 3 is raised in comparison with the peripheral part and leveled in a mountain shape.

  According to this embodiment, for example, when the width of the irrigation channel side and the drainage channel side of the cultivated area 3 is 100 m, conventionally, it was necessary to move the water up to 100 m in order to drain the water in the cultivated area. For example, the water flows to the drainage channel side and the irrigation channel side from the center, and the water can be moved up to 50m, enabling rapid water supply and drainage.

  In addition, by leveling the center part high, water can be returned quickly even if the windward water is drawn to the leeward due to strong winds in any direction of 360 °. Improvements can be measured.

  Moreover, even after rice planting, the exposure of the rice field due to strong winds is reduced and weeds can be prevented.

It is a top view of the cultivation area which has the underdrain device for underground irrigation drainage of this invention. It is a vertical side view for description of the water supply control apparatus at the time of rapid water supply of the underground irrigation drainage culvert apparatus of this invention. It is a vertical side view for description of the drainage control apparatus at the time of rapid water supply of the underground irrigation drainage culvert of the present invention. It is a vertical side view for description of the water supply control apparatus at the time of the normal watering of the paddy field of the underground irrigation drainage culvert apparatus of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal side view for explaining a drainage control apparatus during normal irrigation of a paddy field of underground irrigation drainage culvert apparatus according to the present invention. It is a vertical side view for description of the water supply control apparatus at the time of the normal irrigation of the field of the underground irrigation drainage culvert apparatus of this invention. It is a vertical side view for description of the water supply control apparatus in the drainage of the underground irrigation drainage culvert of the present invention. It is a vertical side view for description of the drainage control apparatus in the drainage of the underground irrigation drainage culvert of the present invention. It is a vertical side view for description which shows the other Example of the culvert pipe of the culvert apparatus for underground irrigation drainage of this invention. It is a schematic plan view of the conventional culvert pipe device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Agricultural road 2 Dredging 3 Cultivation zone 4 Waterway 5 Drainage channel 6 Water supply collecting pipe 7 Drainage collecting pipe 8 Water supply pipe 9 Water supply control device 10 Drainage pipe 11 Drainage control device 12 Lightning pipe 13 Annular groove 14 Lightning pipe 15 Groove 16 Underdrain pipe 17 Hydrophobic material 18 Water supply pipe 19 Water supply port 20 Water supply control device 21 Drainage port 22 Drainage port 23 Drainage control device 24 Drainage pipe 25 Water supply / drainage pipe 26 Water supply port 27 Opening portion 28 Partition plate 29 Water supply port 30 Drainage port 31 Inside 33 Partition wall 34 Partition wall 35 Partition plate 36 Partition plate 37 Drain port 38

Claims (7)

  A culvert buried around the cultivated area and made of a pipe having a hole along the longitudinal direction of the pipe, a water supply control device and a drainage control device communicating with the culvert and the upper surface of the cultivated area, and a communication with the water supply control device. A culvert device for underground irrigation and drainage comprising a holeless pipe having one end configured to communicate with the other end of the drainage control device.   2. The underground irrigation drainage culvert apparatus according to claim 1, wherein the water supply control device has a water level control means.   3. The underground irrigation drainage culvert device according to claim 1 or 2, wherein the drainage control device has a water level control means.   4. The underground irrigation drainage culvert apparatus according to claim 1, wherein the holeless pipe is gradually inclined downward toward the drainage control device.   It has a branch culvert composed of a pipe having a hole along the longitudinal direction of the pipe, which connects the culvert portion on the water supply control device side and the culvert portion on the drainage control device side. Underground irrigation drainage culvert device according to 3 or 4.   6. The underground irrigation drainage culvert apparatus according to claim 5, wherein at least one of the culvert and the branch line culvert has a high central portion and is bent in a mountain shape.   The underground irrigation drainage culvert apparatus according to claim 1, 2, 3, 4, 5 or 6, wherein the central part of the surface of the cultivated area is raised as compared with the peripheral part.

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