JPH1037168A - Closed conduit drain pipe burying method and device thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a necessity of replacement of permeation layers by forming a permeation layer made of a non-corrosive material on a closed conduit drain pipe provided in a ditch which is digged and refilling soil on it. SOLUTION: A tip of a drain pipe 11 such as corrugated pipe having hole is fixed on a drain passage 61, and a tip of multipoints vinyl sheet 21 is fixed on a footpath 62. Next, an excavator 2 is advanced to form a rough ditch by a bucket type digging means 3 and finish the ditch by a ditch finish means 5. The pipe 11 is pulled out on a bottom of the ditch from a drain pipe supply means 10, and a vinyl sheet supply means 20 supplies the sheet 21 along an inner face of the ditch to cover the pipe 11. A filling means 30 supplies foaming body consisting of a pellet which is heated and foamed above the pipe 11 to form a permeation layer S, and both side parts of the sheet 21 are folded down in such a manner that they cover a top face of the layer S to wrap up the pipe 11 and the layer S. A refilling means 7 refills soil 8 on the layer S. Since the layer S is not corroded, it is unnecessary to replace it. Moreover, a series of construction works are done continuously to facilitate the burying work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for burying an underdrain drain pipe.

[0002]

2. Description of the Related Art For the purpose of measuring the growth of crops and paddy rice and the efficiency of harvesting work during the rainy season, it is important to control the dryness of the soil in the fields. In the case of paddy fields, the amount of water drawn into the paddy field is adjusted according to the growth of rice and changes in climate (for example, during the rainy season and dry season), but this alone cannot sufficiently control the dryness of the soil. In particular, when the soil is viscous and drainage is poor, or when the height is low and water easily flows in from the surroundings, etc., it is not possible to sufficiently adjust the degree of dryness of the soil only by controlling the surface water. For this reason,
A trench is dug at an appropriate position in the field, a culvert drain is buried at the bottom of the trench, and rice husk is filled on the culvert drain to cover the culvert drain, forming a permeation layer. It has been practiced to control the dryness of soil in a field by backfilling the soil that forms a soil layer thereon. According to the method described above, since the culvert drain pipe is covered with rice husk,
Since the penetration of surface water is improved, drainage by culvert drain pipes can be promoted, and as a result, drying of the fields is promoted, so that the fields can be dried efficiently in a short period of time if necessary. become.

[0003]

However, in the above-mentioned conventional method, since the permeable layer is formed of rice hulls, the rice hulls corrode with the passage of time, and the rice hulls penetrate in proportion to the progress of the corrosion. There was a problem that the permeability of the layer became poor. The above-mentioned problem can be solved by replacing the above-mentioned rice husk with a new rice hull in an appropriate cycle. Doing so throughout is very cumbersome, time consuming and expensive, and is not an effective solution. An object of the present invention is to solve the above-mentioned problems and to provide a method and an apparatus for burying an underdrain drainage pipe, which do not require replacement of a permeation layer after the burying.

[0004]

In order to achieve the above object, a method of embedding a culvert drainage pipe according to the present invention comprises excavating the ground to form a groove, laying a culvert drainage pipe at the bottom of the groove, A permeable layer made of a non-corrosive material is formed in the culvert drain pipe in the groove, and soil is buried on the permeable layer in the groove. Further, a culvert drain pipe burying device according to the present invention is a trench excavator having means for excavating land to form a rough groove, and means for finishing the groove by leveling the side and bottom surfaces of the excavated rough groove. A drain pipe supply means for continuously laying an underdrain drain pipe at the bottom of the ditch according to the progress of the trench bending machine, and heating and foaming the pellets; and continuously filling the foamed granular foam on the underdrain drain pipe. And filling means for forming a permeation layer.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method and an apparatus for embedding a culvert drainage pipe according to the present invention will be described below with reference to an embodiment shown in the accompanying drawings. FIG. 1 is a schematic side view of a culvert drain pipe burying apparatus according to the present invention, FIG. 2 is a partially enlarged view of a part of a filling means in the culvert drain pipe burying apparatus shown in FIG. 1, and FIG. -A sectional view, FIG. 4 is B in FIG.
-B sectional view, Fig. 5 is an enlarged view of a submerged portion in Fig. 4, Fig. 6 is a CC sectional view in Fig. 1, and Fig. 7 is an enlarged view around a guide member of the underdrain drain pipe burying device of Fig. 1. Each is shown. In the figure, reference numeral 1 indicates a culvert drainage pipe burying device according to the present invention. This culvert drainage pipe burying device 1 includes a trench excavator 2,
And a filling means 30 for forming the permeable layer S.

(Explanation of the excavator) The excavator 2 has a bucket type excavating means 3, a groove finishing means 5, a pipe supplying means 10, a perforated vinyl sheet supplying means 20 for supplying perforated vinyl sheets, And backfilling means 7. The bucket type excavating means 3 includes upper and lower sprockets 3a, 3b and a chain 3c wound endlessly between the sprockets 3a, 3b. The chain 3c
Are mounted with a plurality of automatic jumping buckets 3d. When the chain 3c is rotationally driven, these buckets 3d excavate the soil roughly to form a rough groove. The groove finishing means 5 is provided behind the bucket type excavating means 3. The groove finishing means 5 is provided with a pair of left and right side finishing blades for leaching the soil leaked from the side surface of the rough groove and leveling the side surface of the rough groove symmetrically in the longitudinal direction. The bottom edge is provided with a bottom surface finishing blade that flattens the bottom of the rough groove so that the rough groove formed by the bucket type excavating means 3 is leveled by these finishing blades. Said pipe supply means 10 comprises a reel 12 containing, for example, a drain pipe 11 which may be a perforated corrugated pipe. The reel 12 is rotatably supported by a shaft 13 fixed to a support plate (not shown) provided on the trencher 2. The drainage pipe 11 supplied from the pipe supply means 10 is guided to the bottom of the groove after being finished by the groove finishing means 5 by the two guide members 31 and 32. The vinyl sheet supply means 20 comprises a reel 22 in which a perforated vinyl sheet 21 is wound and stored. The reel 22 includes a shaft 23 fixed to a support plate (not shown) provided on the excavator 1.
It is supported rotatably. The perforated vinyl sheet 21 supplied from the vinyl sheet supply means 20 is also guided along the surface of the groove after being finished by the groove finishing means 5 by the two guide members 31 and 42 described above. The two guide members 31 and 32 described above are provided behind the trencher 2. As shown in FIG. 7, one guide member 31 is provided immediately behind the groove finishing means 5, and guides the porous vinyl sheet 21 on its lower surface and the drain pipe 11 on its upper surface, respectively, into the groove. . Further, the other guide member 32 is provided at a lower end of a supply unit 50 of the filling unit 30 which will be described later. The guide member 32 has a substantially U-shape. As shown in FIG. 5, the lower surface of the guide member 32 maintains the drain pipe 11 at the bottom of the groove. The material which forms the permeation layer S is supplied from the filling means 30 to the inside, which is maintained on the side surface. By the guide member 32, the porous vinyl sheet 21 is maintained along the side surface of the groove until the permeable layer S is formed, and the guide member 3 is moved with the advancement of the underdrain drain pipe burying device 1.
2 are successively folded toward the upper surface of the permeation layer S to enclose the drain pipe 11 and the permeation layer S (FIG. 6).
reference). The back-filling means 7 covers the top of the bucket-type excavating means 3 at its front part, collects the soil excavated by the bucket 3 d of the bucket-type excavating means 3, and is wrapped by the perforated vinyl sheet 21 together with the drain pipe 11. The collected soil 8 is backfilled on the permeation layer S.

(Explanation of Filling Means) This filling means 30
A transfer unit 40 and a supply unit 50 are provided. Transfer section 40
Is arranged from above the engine 2a of the trench excavator 2 behind the drain pipe supply means 10, and the supply unit 50 is arranged behind the drain pipe supply means 10.

(Transfer Section) As shown in FIG. 2, the transfer section 40 has a transfer pipe 41 extending from above the engine 2a to the supply section 50. This transfer pipe 41 is a fixed pipe 4
1a and a flexible floating tube 41b are connected in series. A hopper 42 for supplying raw material is provided in the fixed pipe 41a.
Is attached. A raw material introduction opening (no reference numeral) is formed in the fixed pipe 41a at the portion where the hopper 42 is attached, and the raw material M1 of a non-corrosive material, which can be preferably a pellet, is fixed from the hopper 42 through the raw material introduction opening. It is introduced into the tube 41a. A rotary shaft 43 is inserted in the fixed tube 41a, and a screw conveyor 44 is attached to a portion of the rotary shaft 43 corresponding to the material introduction opening. A driven pulley 45 is provided at an end of the rotary shaft 44 protruding from the fixed tube 41a. A belt 46 is stretched over the driven pulley 45 and the driving pulley 2b provided on the output shaft of the engine 2a.
The rotating shaft 43 is connected to the pulleys 2b and 45 and the belt 46.
The raw material M1 supplied from the hopper 42 is sent by the screw conveyor 44 in the downstream direction of the fixed pipe 41a. An exhaust gas intake opening (no reference numeral) is formed in a portion of the fixed pipe 41a downstream of the screw conveyor 44. An exhaust pipe 2c from the engine 2a is connected to the exhaust gas intake, and exhaust gas from the engine 2a enters the fixed pipe 41a through the exhaust gas intake, and is fixed to the fixed pipe 4a.
It is configured to flow from 1a to the supply unit 50 via the idle tube 41b. Thereby, the screw conveyor 4
3 is sent to the supply unit 50 by the flow of the exhaust gas. The floating tube 41b has one end connected to the fixed tube 41a and the other end connected to the upper part of the supply unit 50. The floating pipe 41b is made of a flexible material as described above. At the end of the underdrainage drain pipe burying operation, the bucket type excavating means 3, the groove finishing means 5, the backfilling means 7, the pipe supplying means 10, and the porous It is configured such that it can be bent when the supply unit 50 of the filling means 30 is rotated and housed upward together with the vinyl supply means 20 (FIG. 7C).
reference).

(Supply Unit) The supply unit 50 is composed of a cylindrical body 53 whose upper end is closed by a disk 51. This cylindrical body 53
Are arranged rearward of the vehicle from the groove finishing means 5 and extend downward from the position above the backfilling means 7, that is, toward the inside of the groove. The cylindrical body 53 has an upper part formed in a cylindrical shape, and a lower part formed in a tapered shape so as to be tapered. As shown in FIG. 3, a plurality of passage forming plates 54 are provided at appropriate intervals above the cylindrical body 53, and these passage forming plates 54 allow the substantially spiral passage P to be formed.
Is formed. An exhaust pipe 55 is provided in the tubular body 53. The exhaust pipe 55 is provided to penetrate the disk 51 and the plurality of passage forming plates 54, and communicates a space below the spiral passage P in the tubular body 53 with the outside of the tubular body 53. The end of the transfer pipe 41 is connected to the upper part of the tubular body 53 as described above. As a result, the raw material M1 is supplied from the transfer unit 40 into the cylindrical body 53 by the exhaust gas. Exhaust gas and raw material M1 are cylindrical body 53
Is sent below the cylindrical body 53 through a spiral passage formed at the upper part of the cylinder. By the way, since the exhaust gas for pushing the raw material M1 is very hot, the raw material M1 is
While passing through the helical passage of the cylindrical body 53, it is heated by the exhaust gas and foamed. Hereinafter, the raw material after foaming is referred to as foam M2. After the exhaust gas passes through the spiral passage P of the tubular body 53, it is exhausted to the outside through the exhaust pipe 55. However, the foam M2 falls directly below the tubular body 53, and It is guided by the tapered portion at the lower part of 53 and supplied into the groove (see FIGS. 4 and 5). Further, as shown in FIG. 4, a closing lid 57 which can be opened and closed by an operation lever 56 is provided in a tapered portion at a lower portion of the cylindrical body 53. When the culvert drain pipe burying operation is completed, the closing lid 57 is closed. This prevents the foam M2 from being supplied more than necessary in the groove. At the lower end of the cylindrical body 53, an adjusting plate 59 that can be vertically adjusted by an adjusting bolt 58 is provided, and the height of the foam M2 supplied into the groove by the adjusting plate 59, that is, Limit the height of the permeable layer S.

(Operation of underdrain drain pipe burying device) Hereinafter, the operation of the underdrain drain pipe burying device configured as described above will be described with reference to FIG.
This will be described with reference to FIG. First, the user starts the operation shown in FIG.
As shown in (1), the tip of the drain pipe 11 is pulled out from the drain pipe supply means 10, and the tip of the drain pipe 11 is fixed to an appropriate portion such as a drain channel 61 defined by U-shaped steel 60, for example. Further, the tip of the perforated vinyl sheet 21 is pulled out from the vinyl sheet supply means 20, and the perforated vinyl sheet 21 is fixed to, for example, a side surface of the avenue 62. still,
In the figure, reference numeral 63 denotes a valve device. A valve body (not shown) is provided at the tip of the valve device 63. The valve element is
After entering the drain pipe 11, the valve is opened according to the operation of the lever 64 to communicate the drain pipe 11 with the drain path 61, and the valve is closed to communicate between the drain pipe 11 and the drain path 61. Cut off. Further, the user operates the hopper 4 of the transfer section 40 of the filling means 30.
2, the raw material M1 is put in, the engine of the trench excavator 2 is driven, and the filling means 30 is operated. Then, the filling means 30
However, after the raw material M1 is foamed and the foamed granular material M2 is supplied into the groove and the formation of the permeation layer S on the drain pipe 11 is started, the bucket type excavating means 3 and the backfilling means 7 are operated. The trench machine 2 is advanced (see FIG. 8B). When the digging machine 2 is advanced while operating the above-mentioned units, the bucket type digging unit 3 cuts the soil one after another to form a rough groove, and the groove finishing unit 5 flattens the side and bottom surfaces of the rough groove. The drain pipe 11 is pulled out one after another from the drain pipe supply means 10 to the bottom of the groove, and the perforated vinyl sheet 21 is supplied from the vinyl sheet supply means 20 along the inner surface of the groove so as to cover the drain pipe 11. Further, from the filling means 30, the foam M2
Are successively supplied above the drain pipe 11 to form the permeation layer S, and at the same time, both sides of the vinyl sheet 21 are bent so as to cover the upper surface of the permeation layer S, and wrap the drain pipe 11 and the permeation layer S. . Further, the soil 8 is backfilled on the porous vinyl sheet 21 surrounding the drainage pipe 11 and the permeable layer S by the backfilling means 7. This culvert drainage pipe burying work is performed continuously while the excavator 2 is advanced while operating the respective means (FIG. 8).
(B)). At the end of the underground drainage pipe burying work for a predetermined distance, bucket type excavating means 3, groove finishing means 5, pipe supplying means 10, perforated vinyl sheet supplying means 20 for supplying perforated vinyl sheet, backfilling means 7, and The supply unit 50 of the filling means 30 is rotated upward around the upper sprocket 3a of the bucket type excavating means 3, and these means are removed from the grooves, and the remaining portion is backfilled with soil to bury the culvert drainage pipe. The process ends (see FIG. 8C).

(Other Application Examples) The porous vinyl sheet used in the above-described embodiment is preferably a roller in which several vinyls used in a greenhouse or the like are stacked and a plurality of heating pins are provided on the outer surface. For example, a sheet that is welded while forming a large number of holes and cut into a groove width can be used. The reel 22 of the perforated vinyl sheet supply means 20 preferably stores a wide perforated vinyl sheet folded in the width direction and supplies the folded perforated vinyl sheet while expanding the perforated vinyl sheet. Further, the thin film that wraps the permeation layer S together with the drain pipe 11 is not limited to a vinyl sheet. When the permeation layer L is formed of a material that is easily scattered, it has good permeability that can prevent the scattering of these materials. Any film may be used as long as it is a thin film. Further, when the permeation layer S is formed of a material which is hard to be scattered, the vinyl sheet supply means 20 is not required. Further, in the above embodiment, the filling means is configured to form the osmotic layer with a large number of expanded granules M2 obtained by foaming pellets, but the material forming the osmotic layer is not limited to this embodiment. Instead, any material may be used as long as it is a non-corrosive material and can form an appropriate permeable layer.

[0012]

According to the method of embedding the culvert drainage pipe according to the invention configured as described above, the gap between the culvert drainage pipe buried at the bottom of the groove and the soil backfilled above the culvert drainage pipe is provided. Since the permeation layer made of a non-corrosive material is formed, the material forming the permeation layer does not corrode with time. Therefore, there is an effect that once performed, there is no need to replace the permeable layer thereafter. Furthermore, according to the culvert drainage pipe burying device according to the present invention, a series of operations for burying the above-described culvert drainage pipe can be continuously performed, so that the burial work is facilitated and labor is not required.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a culvert drainage pipe burying device according to the present invention.

FIG. 2 is a partially enlarged view of a part of a filling means in the culvert drainage pipe burying apparatus shown in FIG.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is an enlarged view of a submerged portion in FIG.

6 is a sectional view taken along the line CC in FIG.

FIG. 7 is a partially enlarged view around a guide member in the underdrain drain pipe burying device of FIG. 1;

8 (a) to 8 (c) are diagrams showing the operation states of the culvert drainage pipe burying device according to the present invention over time.

[Explanation of symbols]

 Reference Signs List 1 culvert drainage pipe burying device 2 trencher 2a engine 2b pulley 2c exhaust pipe 3 bucket type excavating means 3a sprocket (upper) 3b sprocket (lower) 3c chain 3d automatic rising bucket 5 groove finishing means 7 filling means 8 filling Return soil 10 Pipe supply means 11 Drain pipe 12 Reel 13 Axle 20 Perforated vinyl sheet supply means 21 Perforated vinyl sheet 22 Reel 23 Axis 30 Filling means 31 Guide member 32 Guide member 40 Transfer unit 41 Transfer pipe 41a Fixed pipe 41b Floating pipe 42 Raw material Supply hopper 43 Rotary shaft 44 Screw conveyor 45 Follower pulley 46 Belt 50 Supply unit 51 Disc 53 Tubular body 54 Passage forming plate 55 Exhaust pipe 60 U-shaped steel 61 Drainage channel 62 Drainage path 63 Valve device 64 Lever S Permeation layer P spiral -Shaped passage M1 raw material (peret G) M2 foam (M2)

Claims (4)

[Claims] 1. A trench is formed by excavating the ground, a culvert drainage pipe is laid at the bottom of the trench, and a permeable layer made of a non-corrosive material is formed on the culvert drainage pipe in the trench. A method for burying underdrainage drainage pipes, characterized by backfilling soil on the infiltration layer. 2. The method of burying a culvert drainage pipe according to claim 1, wherein in the step of forming the permeable layer, the permeable layer is simultaneously wrapped with a porous thin film. 3. means for excavating land to form a rough ditch;
A trench excavator having means for finishing the groove by leveling the side and bottom surfaces of the excavated rough groove, and a drain pipe supply means for continuously laying a culvert drain pipe at the groove bottom in accordance with the progress of the groove bending machine, Filling means for heating the pellets to form foam, and continuously filling the foamed granular foam on the culvert drainage pipe to form a permeation layer. 4. The underdrain drain pipe burying device according to claim 3, further comprising a porous thin film supply means for supplying a porous thin film so as to surround the permeable layer formed of the granular foam.