JP3168683U - Paddy drainage culvert and paddy water level adjustment system - Google Patents

Abstract

A paddy water level adjustment system capable of adjusting the water level by simultaneously discharging groundwater and surface water. A culvert drainage basin for a paddy field, to which a culvert drainage pipe 11A buried in the underground of a paddy field and an external drainage pipe 14 for draining water from the paddy field are connected, respectively. A basin body 1 having a basin 2, an upper basin 3 provided above the lower basin 2 and having a plane substantially the same as the lower basin 2, and a culvert drain provided on a side plate 5 </ b> F of the lower basin 2. A culvert drainage port 12 for connecting the pipe 11A, an external drainage port 15 provided on the other side plate 5B of the lower casing 2 for connecting an external drainage pipe 14, and an upper opening provided on the side plate 6F of the upper casing body 3 are provided. And an upper opening 21 facing the surface water of the paddy field, a weir plate for adjusting the water level provided in the upper opening 21, and a vertical water level connected to the culvert drain pipe 11A in the basin body 1. And an adjustment tube 43. [Selection diagram] Fig. 1

Description

  The present invention relates to a paddy culvert drainage paddy and a paddy field water level adjustment system, and more particularly, to a paddy culvert drainage paddle and a paddy field water level adjustment system that adjust the water level of the paddy field.

  Conventionally, as this type, underdrain pipes are buried in the ground, and the drainage dredge is a vertical installation of a dredge body consisting of large-diameter pipes. A water level setting device comprising a small-diameter pipe is provided, and the culvert drain pipe is connected to the water level setting device, and the upper end of the water level setting device is formed so that the vertical position can be adjusted according to the set water level of the field. A culvert drainage apparatus (for example, Patent Document 1) is known.

  In the culvert drainage device, one end of the culvert drainage pipe is connected to the water supply channel, and the water flowing through the water supply channel is supplied from the water supply channel to the culvert drainage pipe and supplied from the culvert drainage pipe to the basement of the field.

JP 2007-14209 A

  The underdrainage device of Patent Document 1 can drain the groundwater of paddy fields, but a separate drainage device is required to discharge the surface water of the paddy fields, which is inconvenient, for groundwater and surface water. When the drainage device is provided, there is a problem that the equipment cost increases.

  Further, in the above-mentioned Patent Document 1, since a perforated pipe made of synthetic resin is used for the underdrain pipe, clogging is liable to occur due to the entry of soil or the like, and water is periodically passed through the perforated pipe and clogged. Need to prevent.

  By the way, the water level of a paddy field has risen due to a heavy rain, and when the water of the paddy field is drained as it is, there is a problem that the amount of rain in the river increases, and the conventional water level adjusting device has only a small water storage capacity.

  Therefore, the present invention solves the above-mentioned problems, and an object thereof is to provide a paddy underdrainage basin and a paddy field water level adjustment system capable of adjusting the water level by draining ground water and surface water at the same time. In addition, an object is to provide a paddy drainage pit and a paddy water level adjustment system with water storage capacity.

  The invention of claim 1 is a concrete paddy drainage basin for concrete paddy field, to which a drainage pipe buried in the ground of the paddy field and an external drainage pipe for draining the water of the paddy field to the outside are connected to each other. A bottom body having a bottom, and a top body having an upper body that is provided at an upper portion of the lower body and substantially the same plane as the lower body, and the underdrainage provided on a side plate of the lower body A drainage port connecting a pipe, an external drainage port provided on the other side plate of the lower casing and connecting the external drainage pipe, an upper side provided on a side plate of the upper casing, and the paddy field It is characterized by comprising an upper opening provided facing the surface water and a water level adjusting weir plate provided in the upper opening.

  The invention of claim 2 is characterized in that a thin wall portion for punching is provided in the underdrain outlet.

  The invention of claim 3 is characterized in that the upper opening is provided in the front side plate of the upper casing, the underdrain outlet is provided in the front side plate of the lower casing, and the external drain outlet is provided in the rear side plate of the lower casing. A partition plate for separating the front and rear sides of the main body between the front side plate and the rear side plate, and longitudinal groove portions for inserting both side edges of the partition plate are provided on the inner surfaces of the left and right side plates of the main body. The partition plate is provided with a partition drain port having a diameter smaller than that of the culvert drain port at a lower portion of the partition plate.

  The invention of claim 4 is a paddy field water level adjustment system using the paddy drainage culvert according to any one of claims 1 to 3, wherein the culvert drain pipe is connected to the culvert drainage outlet, In the body, a vertical water level adjusting pipe is detachably connected to the underdrain drain pipe, and the external drain pipe is connected to the external drain port.

  The invention of claim 5 is the paddy field water level adjustment system using the paddy drainage culvert according to claim 3, wherein the culvert drainage pipe is connected to the culvert drainage outlet, and the culvert drainage pipe in the paddle body. A vertical water level adjustment pipe is detachably connected, the external drain pipe is connected to the external drain port, the upper opening is provided in a front side plate of the upper casing, and the upper opening and the water level The upper end opening of the adjustment pipe is arranged so as to be shifted from side to side.

  The invention of claim 6 is that the space between the inner surfaces of the front and rear side plates and the inner surfaces of the left and right side plates of the lower casing is at least three times the diameter of the underdrain outlet, and the partition plate is The upper end of the water level adjusting pipe is lower than the upper end of the upper casing and higher than the lower end of the upper casing, and the upper end of the water level adjusting pipe is higher than the upper end of the upper casing. Located on the upper end side of the body, the upper end of the partition plate is lower than the upper end of the water level adjusting pipe and higher than the lower end of the upper casing, and the upper end of the partition plate is positioned on the upper end side of the upper casing It is characterized by that.

  The invention of claim 7 is an unglazed clay pipe in which the underdrain drainage pipe has the water permeability, and one end of the clay pipe has a plurality of longitudinal grooves in the circumferential direction, and the other end of the clay pipe has the one end on the other end. A receiving port for inserting and connecting is provided, and the one end is inserted and connected in the receiving port.

  According to the first aspect of the present invention, a culvert drain pipe is connected to the culvert drain outlet, an external drain pipe is connected to the external drain outlet, and underground water is guided into the main body of the culvert by the culvert drain pipe, and from the external drain pipe to the outside. In addition, the surface water is led into the main body from the top opening and drained to the outside through the external drain pipe. At this time, the surface water level of the paddy field can be adjusted by the dam plate. Groundwater and surface water can be drained using a drainage basin. Moreover, a lower main body and an upper main body can be assembled in a paddy field, and a main body can be installed.

  According to the invention of claim 2, it is possible to use the underdrain outlet by breaking through the thin wall portion for punching.

  According to the invention of claim 3, since the water flowing in from the upper opening and the culvert drainage port is discharged through the partition drainage port by dividing the front and rear of the main body by the partition plate, the front side of the partition plate You can store water.

  According to the invention of claim 4, the groundwater level of the paddy field can be adjusted by the height of the water level adjusting pipe, and the groundwater level can be lowered by removing the water level adjusting pipe. By adjusting the height, the surface water of the paddy field can be drained directly and the water level can be adjusted.

  According to the invention of claim 5, when the surface water of the paddy field is guided from the upper opening to the main body of the paddy water, it is possible to suppress the water from the upper opening from entering the upper opening of the water level adjusting pipe. The drainage from can be performed stably.

  According to the sixth aspect of the present invention, since the distance between the side plates is three times or more the diameter of the underdrain outlet, it is possible to secure a water retention amount for the water in the paddy field. In addition, since the upper end of the partition plate is lower than the upper end of the upper casing, the accumulated water does not overflow from the upper end of the main body, and the water is drained over the partition plate. Drainage in the pipe can be secured.

  According to the seventh aspect of the present invention, underground water can be guided into the earth pipe from between the receiving port and the groove at one end, and the underground water can be drained well.

It is a perspective view which shows Example 1 of this invention. It is a cross-sectional view of the main body of the culvert with the section of the culvert drain outlet as above. It is sectional drawing of the ridge body which made the external drain outlet location the cross section same as the above. It is a front view of a bag main body same as the above. It is a side view of a bag main body same as the above. It is a top view of a bag main body same as the above. It is sectional drawing which shows an installation state same as the above. It is a side view of the underdrain drainage pipe which made the cross section a part same as the above. It is sectional drawing of the principal part of a culvert drainage pipe same as the above. It is sectional drawing of a groove part and a vertical groove part same as the above.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the embodiments described below do not limit the contents of the present invention described in the claims of utility model registration. In addition, all the configurations described below are not necessarily essential requirements of the present invention. In each example, by adopting a new paddy culvert drainage paddy and paddy field water level adjustment system different from the conventional ones, an unprecedented paddy culvert drainage paddy and paddy field water level adjustment system can be obtained. And the paddy water level adjustment system.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 10 show a first embodiment of the present invention. As shown in the figure, the main body 1 of a paddy underdrain drainage M (hereinafter referred to as a drainage basin) used in the paddy field water level adjustment system of the present embodiment is as follows. The lower casing 2 having a substantially flat plane and the upper casing 3 having the same planar shape as the lower casing 2 are formed so as to overlap each other, and the lower casing 2 and the upper casing 3 are precast concrete products. The lower housing 2 includes a bottom plate 4, a front side plate 5F, a rear side plate 5B, a left side plate 5L, and a right side plate 5R, and the side plates 5F, 5B, 5L, 5W are inclined upward and become thinner upward. It is formed as follows. The upper casing 3 includes a front side plate 6F, a rear side plate 6B, a left side plate 6L, and a right side plate 6R. The side plates 6F, 6B, 6L, and 6W are inclined upward on the inner surface. The lower casing 2 is formed so that the thickness is the same at the upper end of the lower casing 2 and the lower end of the upper casing 3. In addition, the water storage amount in the main body 1 can be adjusted by preparing the upper main body 3 having different heights.

  The front side plate 5F of the lower casing 2 is provided with a culvert drainage port 12 for connecting the culvert drainage pipes 11 and 11A, and the culvert drainage port 12 is provided with a thin wall portion 13 for punching. A taper portion 13A is provided around the outer surface side. In addition, an external drainage port 15 for connecting an external drainage pipe 14 is opened on the rear side plate 5B of the lower casing 2, and a tapered portion 16A is provided around the outer surface side of the external drainage port 15. Further, the culvert drain 12 is disposed on the right side, and conversely, the external drain 15 is disposed on the left side. And after manufacturing the lower housing 2 in a factory, the thin wall part 13 is broken and the underdrain outlet 12 is formed. The underdrain 12 may be opened from the beginning without providing the thin wall portion 13 for punching.

  In this embodiment, in order to secure the water storage amount of the main body 1, the distance between the inner surfaces of the front and rear plates 5F and 5B and the distance between the inner surfaces of the left and right plates 5L and 5R are set as the underdrainage. The diameter of the mouth 12 is 3 times or more.

  An upper opening 21 is formed on the left side of the front plate 6F of the upper casing 3. The upper opening 21 is formed so that the upper part is opened and both side edges are narrowed from the upper part to the lower part, and groove parts 23 and 23 for fitting both sides of the barrier plate 22 are formed on both side edges. Has been. Then, with the upper part of the upper frame 3 protruding above the ground, the main body 1 is embedded in the paddy field 101, the upper opening 21 is disposed facing the surface water 102 of the paddy field 101, and the grooves 23, 23 A plurality of barrier plates 22, 22... Are inserted between them, and the water level of the surface water 102 of the paddy field 101 can be adjusted by the height of the inserted barrier plates 22.

  A synthetic resin culvert drain pipe 11A is connected to the culvert drain outlet 12, and this culvert drain pipe 11A has a receiving port 11B outside the culvert body 1, and the culvert drain pipe 11A is a culvert made of an unglazed earthen pipe. Connect the drain pipe 11. The underdrain pipe 11 has an insertion port 32 at one end of the straight pipe portion 31 and a receiving port 33 at the other end, and a longitudinal groove portion 34 is provided on the outer periphery of the straight pipe portion 31 in the circumferential direction. A plurality are provided at equal intervals. The insertion port 32 is inserted into the receiving port 11B, and the underdraining pipe 11 is connected to the underdrainage pipe 11A. The insertion port 32 is inserted into the receiving port 33 of the underdraining pipe 11, and a plurality of underdraining pipes 11, 11 are inserted. Is buried in the underground 103 of the paddy field 101.

  Further, a synthetic resin curved pipe 41 is connected to the inner end of the culvert drain pipe 11A, a receiving port 42 is formed at the upper end of the curved pipe 41, and a synthetic resin water level adjusting pipe 43 is formed in the receiving port 42. The opening of the upper end 43J of the water level adjusting pipe 43 is provided in the height range of the upper opening 21 below the upper end of the main body 1, and the height of the upper end 43J is Thus, the water level (ground water level) of the surface water 102 of the paddy field 101 can be set. In this case, the groundwater level is set using the water level adjusting pipes 43 having different lengths. If the water level adjusting pipe 43 is removed, the upper end of the curved pipe 41 becomes the groundwater level.

As shown in FIG. 4, the upper opening 21 is provided on the left side of the front plate 6F, and the dark culvert drainage port 12 is disposed on the right side of the front plate 5F, thereby flowing into the main body 1 from the upper opening 21. An effect is obtained that the amount of water directed toward the opening of the upper end 43J of the water level adjusting pipe 43 is reduced. The external drain pipe 15 is connected to the external drain pipe 14 made of synthetic resin, and this external drain pipe 14 is connected to a drainage channel 46 located outside the paddy field 101. In FIG. 7, reference numeral 47 is a shore. In FIG. 7, the heel body 1 is embedded in the shore 47 at a position where the upper opening 21 faces the surface water 102, and the upper end of the heel body 1 is the upper surface of the shore 47. Located in the lower recess.

  On the inner surfaces of the left and right plates 5L, 6L, 5R, 6R of the main body 1, vertical groove portions 51, 51 are provided continuously in the vertical direction, and both side edges of these vertical groove portions 51, 51 are inserted to form a partition plate 52. As shown in FIG. 6 and the like, the partition plate 52 partitions the interior of the bag main body 1 back and forth between the front side plates 5F and 6F and the rear side plates 5B and 6B, and the partition plate 52 A water level adjusting pipe 43 is located. In addition, a partition drain port 53 is provided at the lower part of the partition plate 52, and the partition drain port 53 is formed smaller than the inner diameter of the water level adjusting pipe 43. In the mounted state, the upper end 43J of the water level adjusting pipe 43 is lower than the upper end of the upper casing 3, and the upper end 52J of the partition plate 52 is lower than the upper end 43J of the water level adjusting pipe 43. The upper end 52J of the partition plate 52 preferably has a height difference of 100 to 150 millimeters between the upper end 43J of the water level adjusting pipe 43.

  In addition, as shown in FIG. 10, the shape of the groove part 23 and the vertical groove part 51 is an isosceles trapezoid expanding to the outside, and it is easy to position the edges of the barrier plate 22 and the partition plate 52.

  Thus, in this embodiment, corresponding to claim 1, the underdrain pipes 11 and 11A embedded in the underground 103 of the paddy field 101 and the external drain pipe 14 for draining the water of the paddy field 101 to the outside are respectively connected. A concrete paddy drainage basin made of concrete, having a substantially rectangular flat bottomed bottom housing 2 and an upper housing 3 provided on the upper portion of the lower housing 2 and having substantially the same plane as the lower housing 2 , A culvert drainage port 12 provided on the side plate 5F of the lower casing 2 and connected to the culvert drainage pipe 11A, and an external drainage pipe 14 provided on the other side plate 5B of the lower casing 2 An external drain port 15, an upper opening 21 provided on the side plate 6 </ b> F of the upper frame 3 and having an upper opening and facing the surface water 102 of the paddy field 101, and a water level adjustment provided in the upper opening 21 Since the culvert plate 22 is provided, the culvert drain pipes 11A and 11 are connected to the culvert drain port 12, the external drain pipe 14 is connected to the external drain port 15, Water is guided into the main body 1 by the underdrain pipe 11 and drained from the external drain pipe 14 to the outside, and the surface water 102 is guided from the upper opening 21 into the main body 1 and drained from the external drain pipe 14 to the outside. At this time, the surface level of the surface water 102 of the paddy field 101 can be adjusted by the dam plate 22, and the ground water and the surface water 102 can be drained by using one drainage basin 1 in this way. Further, the paddle body 1 can be installed by assembling the lower casing 2 and the upper casing 3 in the paddy field 101.

  Thus, in this embodiment, the thin wall portion 13 for punching is provided in the underdrain outlet 12 corresponding to claim 2, and therefore the underdrain portion 12 can be used by breaking through the thin portion 13 for punching.

  Thus, in this embodiment, corresponding to claim 3, the upper opening 21 is provided in the front plate 6F of the upper casing 3, the underdrain outlet 12 is provided in the front plate 5F of the lower casing 2, and the external A drainage port 15 is provided in the rear plate 5B of the lower casing 2 and a partition plate 52 is provided between the front plate and the rear plate to divide the interior of the rod body 1 from front to back, and both side edges of the partition plate 52 are inserted. Since the groove portions 51 and 51 are provided on the inner surfaces of the left and right side plates of the main body 1 and only the partition drain port 53 having a smaller diameter than the underdrain port 12 is provided at the lower part of the partition plate 52, the front and rear of the main body 1 are partitioned by the partition plate 52. Thus, the water flowing in from the upper opening 21 and the culvert drainage port 12 is discharged through the small-diameter partition drainage port 53, so that the water can be stored on the front side of the partition plate 52.

  As described above, in this embodiment, corresponding to claim 4, in the paddy field water level adjusting apparatus using the paddy drainage basin M according to any one of claims 1 to 3, Since the culvert drain pipe 11A is connected, the vertical water level adjustment pipe 43 is detachably connected to the culvert drain pipe 11A in the culvert body 1, and the external drain pipe 14 is connected to the external drain port 15. The groundwater level of the paddy field 101 can be adjusted by the height of the pipe 43, and if the water level adjustment pipe 43 is removed, the water level of the underground 103 can be lowered, and the height of the dam plate 22 is adjusted. By doing so, it is possible to directly drain the surface water 102 of the paddy field 101 and adjust the water level.

  Thus, in this embodiment, corresponding to claim 5, in the paddy field water level adjustment system using the paddy drainage culvert according to claim 3, the culvert drainage pipe 11 </ b> A is connected to the culvert drainage outlet 12. In the main body 1, the vertical water level adjusting pipe 43 is detachably connected to the underdrain pipe 11 </ b> A, the external drain pipe 14 is connected to the external drain port 15, and the upper side plate 6 </ b> F is opened to the front side plate 6 </ b> F. Since the upper opening 21 and the opening of the upper end 43J of the water level adjusting pipe 43 are arranged so as to be shifted left and right, the surface water 102 of the paddy field 101 is guided from the upper opening 21 to the main body 1 of the paddy field. At this time, since water from the upper opening 21 can be prevented from entering the upper end opening of the water level adjusting pipe 43, drainage from the water level adjusting pipe 43 can be performed stably.

  Thus, in this embodiment, corresponding to claim 6, the space between the front surfaces of the lower casing 2 facing each other and the inner surfaces of the rear side plates 5F and 5B and the inner surfaces of the left and right side plates 5L and 5R The upper end 43J of the water level adjusting pipe 43 is lower than the upper end of the upper casing 3 and higher than the lower end of the upper casing 3, and the upper end 43J of the water level adjusting pipe 43 is higher than the upper end 43J. The upper end 52J of the partition plate 52 is located lower than the upper end 43J of the water level adjusting pipe 43 and higher than the lower end of the upper housing 3 and is located at the upper end 43J of the partition plate 43. Is located on the upper end side of the upper casing 3 from the lower end of the upper casing 3, and therefore the distance between the side plates is more than three times the diameter of the underdrain drainage port 12, so that the water retention amount is secured for the water in the paddy field 101. be able to. Further, since the upper end 52J of the partition plate 52 is lower than the upper end of the upper casing 3, the accumulated water does not overflow from the upper end of the casing body 1, and the water is drained over the partition plate 52. Therefore, drainage in the water level adjusting pipe 43 can be secured.

  Thus, in this embodiment, corresponding to claim 7, the underdrain pipe 11 is an unglazed earth pipe having water permeability, and one end of the earth pipe has a plurality of longitudinal grooves 34 in the circumferential direction. Since the receiving port 33 to which one end is inserted and connected is provided at the other end of the clay pipe, and the insertion port 32 which is one end is inserted and connected into the receiving port, underground water is introduced into the clay pipe from between the receiving port 33 and the groove 34 at one end. It can guide and drain the underground water well.

  In addition, this invention is not limited to a present Example, A various deformation | transformation implementation is possible within the range of the summary of this invention.

M Paddy drainage for paddy field 1 Body 2 Lower body 3 Upper body 5 Side plate 6 Side plate
11 Underdrain pipe
11A Underground drainage pipe
12 Underdrain outlet
13 Thin section
14 External drain pipe
15 External drain
16 Thin section
21 Upper opening
22 Barrage
32 slot
33 socket
34 Groove
43 Water level adjustment pipe
43J Top edge
46 Drainage channel
47
51 Vertical groove
52 Partition
52J Top edge
53 Drain outlet
101 paddy
102 Surface water
103 underground

Claims (7)

A concrete culvert drainage pit that is connected to an underground drainage pipe buried in the paddy field and an external drainage pipe that drains the paddy water to the outside.
A bottom body having a bottom having a substantially rectangular plane and a bottom body, and an upper body provided on an upper part of the lower body and having an upper body having substantially the same shape as the lower body,
A culvert drainage port provided on a side plate of the lower casing and connecting the culvert drainpipe,
An external drain port provided on the other side plate of the lower casing and connecting the external drain pipe;
An upper opening provided on a side plate of the upper frame and having an upper opening and facing the surface water of the paddy field; and
A weir plate for adjusting the water level provided in the upper opening,
A culvert drainage paddy for paddy fields characterized by comprising: The culvert drainage paddy for paddy fields according to claim 1, wherein a thin wall portion for punching is provided at the culvert drainage port. The upper opening is provided in a front plate of the upper casing, the underdrain outlet is provided in a front plate of the lower casing, the external drain outlet is provided in a rear plate of the lower casing, and the front plate A partition plate that divides the interior of the cocoon body between the rear side plate and the rear side plate is disposed, and vertical groove portions for inserting both side edges of the partition plate are provided on the inner surfaces of the left and right side plates of the cocoon body, and at the lower part of the partition plate 3. The culvert drainage paddy for paddy fields according to claim 1 or 2, further comprising a partition drainage port having a smaller diameter than the culvert drainage port. The paddy field water level adjusting system using the paddy drainage culvert according to any one of claims 1 to 3, wherein the culvert drainage pipe is connected to the culvert drainage port, and the culvert drainage pipe is connected to the culvert drainage pipe. A water level adjusting system for paddy fields, wherein a vertical water level adjusting pipe is detachably connected, and the external drain pipe is connected to the external drain port. The paddy field water level adjustment system using the paddy drainage culvert according to claim 3, wherein the culvert drainage pipe is connected to the culvert drainage port, and the water level adjustment in the vertical direction to the culvert drainage pipe in the paddy body. A pipe is detachably connected, the external drain pipe is connected to the external drain port, the upper opening is provided in the front side plate of the upper casing, and the upper opening and the upper end opening of the water level adjusting pipe are provided. A water level adjustment system for paddy fields characterized by being shifted in the right and left positions. The distance between the inner surfaces of the front and rear plates and the inner surfaces of the left and right plates is less than three times the diameter of the culvert drainage port, and the partition plate is closer to the rear plate than the front plate. The upper end of the water level adjusting pipe is lower than the upper end of the upper casing and higher than the lower end of the upper casing, and the upper end of the water level adjusting pipe is positioned on the upper end side of the upper casing. The upper end of the partition plate is lower than the upper end of the water level adjusting pipe and higher than the lower end of the upper casing, and the upper end of the partition plate is located on the upper end side of the upper casing. 5. The water level adjustment system for paddy fields according to 5. The underdrain drainage pipe is an unglazed clay pipe having the water permeability, and one end of the clay pipe has a plurality of grooves in the circumferential direction in the circumferential direction, and a receiving port for inserting and connecting the one end to the other end of the clay pipe is provided. The water level adjusting system for paddy fields according to claim 6, wherein the one end is inserted and connected into the receiving port.

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