JP2657461B2 - Underdrain formation method and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a culvert and a method for forming a culvert in which a hydrophobic groove and a pipe are formed at the same time as rolling a soil surface of the hydrophobic groove and a method for forming the culvert. The present invention relates to a culvert forming device to be used.

[0002]

2. Description of the Related Art Hitherto, various techniques have been proposed in which a culvert is formed in soil such as a golf course and a ground, and the drainage of the soil is improved by the culvert.

For example, in Japanese Patent Application Laid-Open No. 3-54823, a standing plate attached to the rear of a towing machine and a bullet for drilling provided at the lower end of the standing plate are set in soil, and the above-mentioned towing machine sets the above-mentioned bullet. When the drilling machine is towed, the upright plate cuts the soil to form a groove for hydrophobicity, and at the same time, a drilling hole is formed by the bullet for drilling, and a tubular body such as a pipe connected to the bullet for drilling is formed. There is disclosed a technique of automatically retracting and installing in a perforation, and thereafter filling a hydrophobic material in the hydrophobic groove and the perforation to form a culvert.

[0004]

By the way, as shown in FIG. 6, when a groove 2 for hydrophobicity and a hole 3 for drawing in are formed in the soil 1 by a standing plate of a drilling machine and a bullet for drilling, a surface 1a of the soil 1 is formed. Since the raised portion 4 is formed, the hydrophobic groove 2 and the recess 3 are filled with a hydrophobic material 5 and then the soil surface 1a is rolled with a roller to level the ground.

However, as shown in FIG. 7, when the surface of the soil surface 1a is leveled by the roller 6, the pressure of the raised portion 4 causes the side of the soil surface 1a of the hydrophobic groove 2 to collapse, and
On the soil surface 1a side, and penetration of rainwater or the like from the soil surface 1a to the hydrophobic groove 2 is inhibited.

When the member inserted into the drawing hole 3 is a relatively soft cylindrical body 7, as shown in FIG. 7, the cylindrical body 7 is formed on the soil surface of the hydrophobic groove 2 as shown in FIG. 1a is deformed by the pressure at the time of collapse, and the drainage performance is also reduced.

[0007] Therefore, the object of the present invention is a simple operation,
Without breaking the soil surface of the hydrophobic groove, the soil surface can be rolled while maintaining good penetration performance, while preventing deterioration in function due to deformation of the member inserted through the drawing hole for reliability, It is an object of the present invention to provide a high culvert forming method and a culvert forming device used directly for implementing the method.

[0008]

In order to achieve the above object, a method for forming a culvert according to the present invention comprises the steps of excavating a soil surface in a streak shape with a soil removing member, and incising the soil along the groove with a standing plate. Forming a groove for hydrophobicity by forming a hole for drawing in at the bottom end of the groove for hydrophobicity with a bullet for perforation attached to the lower end of the standing plate; anda pipe connected to the bullet for perforation. In the method of forming an underdrain including the step of drawing into the recess for perforation and the step of filling the hydrophobic groove with a hydrophobic material, the formation of the hydrophobic groove and the perforation for perforation is performed on both sides of the upright plate. It is characterized in that the soil surface located directly above the drill bullet is rolled by rollers.

Further, in the underdrain forming apparatus of the present invention, a soil removing member for excavating the soil surface is provided at a rear portion of the towing machine, and a standing plate for cutting a hydrophobic groove in the soil is provided behind the soil removing member. At the lower end of the standing plate, a drilling bullet is formed at the bottom end of the hydrophobic groove to form a drilling hole, and a pipe drawn into the drawing hole is connected to the drilling bullet. In a culvert forming apparatus provided with a hydrophobic material filling device at the back, and provided with a hydrophobic material guide portion for inserting the hydrophobic material into the hydrophobic groove and filling the hydrophobic material into the hydrophobic groove and the drawing-in hole, the hydrophobic material filling device is provided. Rollers for rolling the soil surface are provided on both sides of the standing plate protruding from the soil surface and at positions directly above the drilling bullets.

[0010]

According to the present invention, since the soil surface is firstly excavated by the soil removing member, the subsequent cutting of the hydrophobic groove by the standing plate is facilitated.

Further, when a groove for hydrophobicity is incised by a standing plate and a drilling hole is formed by a bullet for punching, the soil surface located on both sides of the standing plate and directly above the bullet for drilling is removed by a roller. Because of the compaction, the soil surface on both sides of the hydrophobic groove can be leveled.

At this time, since the upright plate is located between the rollers and the bullet for perforation is located directly below, the groove for hydrophobicity and the perforation for retraction are not crushed by the rollers, and the retraction is almost a perfect circle. A perforation is formed.

As a result, the pipe connected to the bullet for perforation and drawn into the perforation for retraction can be buried in the soil without deformation. Therefore, the water can be satisfactorily permeated through the groove for hydrophobicity, and the permeated water can be collected in the pipe in the soil and drained effectively.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a culvert forming apparatus according to the present invention. As shown in FIGS. 1 and 2, the underdrain formation device 11 is connected to a rear portion of a towing machine 12 such as a bulldozer via an elevator 13.

The elevator 13 comprises a parallel link 14 and a hydraulic cylinder 15 connected to the parallel link 14. When the hydraulic cylinder 15 protrudes, the underdrain forming device 11 is set in the soil 16, and When the hydraulic cylinder 15 moves backward, the culvert forming device 11
Is translated upward.

An earth receiving plate 17 is laid at the front of the culvert forming device 11, and the central front and rear portions of the earth receiving plate 17 are supported by arches 18. The parallel link 14 is connected to the front of the earth receiving plate 17 and the arch 1.
8 are connected to each other. In addition, the arch 18
The drum 19a of the soiling member 19 is pivotally supported. This soiling member 19 is inserted and arranged in a slit 17 a formed in the center of the earth receiving plate 17.
The left scraping blade 19b attached to the left end of the drum 9a and the right scraping blade 19c attached to the right end of the drum 1
The surface 1 on which the lawn of the soil 16 grows by the rotation of 9a
6a is scraped out.

As shown in FIG. 3, each of the scraping blades 19b and 19c attached to both ends of the drum 19a is arranged at equal intervals (every 120 °) three by one on one side and one on one side. The soiling blade 19c (19b) is the soiling blade 1 on the other side.
9b, 19b (19c, 19c). Although not shown in detail in the figure, the left soil scraping blade 19b transfers the scraped soil 16 to the soil receiving plate 1.
7 forward Tsugioku Ri out to the left side from and also the right soil scraping blade 19c is scraped soil is shaped to produce feed to the right direction from the earth receiving plate 17.

Further, the slit 1 of the earth receiving plate 17 is provided.
A shovel 20 is attached to the rear of 7a. FIG.
As shown in FIG.
9 is located between and behind the left and right shaving blades 19b and 19c.
The surface 16a of the soil 16 is excavated with the c and the shovel 20.

At the rear of the arch 18 and behind the earth receiving plate 17, a standing plate 21 is inserted vertically, and
It is positioned and fixed at 2. Although not shown, positioning holes are formed in the standing plate 21 at predetermined intervals, and one of the positioning holes is hooked via the pin 22 to thereby protrude downward from the standing plate 21. That is, the incision depth of the hydrophobic groove 16b by the standing plate 21 is appropriately set.

Further, at the lower end of the upright plate 21, there is provided a cylindrical drilling bullet 23 having a sharpened tip for forming a drilling 16c at the bottom end of the hydrophobic groove 16b. Also,
A tube 24 made of a plastic tubular body is connected to the rear part of the perforation bullet 23. The pipe 24 is formed by molding a plastic sheet having a large number of holes into a tubular shape, and is sequentially fed out while being formed into a tubular shape from a plastic sheet reel (not shown) disposed behind the culvert forming device 11. ing. However, various kinds of pipes such as a perforated vinyl hose can be used as the pipe 24.

The standing plate 2 is provided on both sides of the arch 18.
The front end of the lever 25 is pivotally supported in front of 1. A roller 26 is pivotally supported on a portion of the lever 25 located on the side of the upright plate 21, and a rear end of the lever 25 is fixed to a stand 18 a provided at a rear end of the arch 18. It is connected to the cylinder 27. Roller 26
Is for rolling the surface 16a of the soil 16, and the rolling pressure is adjusted by the reciprocating operation of the hydraulic cylinder 27.

Further, a hydrophobic material filling device 28 is disposed behind the hydraulic cylinder 27. The hydrophobic material filling device 28 is fixed to the stand 18a and the arch 18 via a frame (not shown), and includes a hopper 28a and a hydrophobic material guide portion 28b disposed below the hopper 28a. It is composed of As shown in FIG. 1, the hydrophobic material guide portion 28b is inserted into the hydrophobic groove 16b of the soil 16 to allow the hydrophobic material 29 supplied from the hopper 28a to pass through the hydrophobic groove 16b and the perforation 16c.
Fill.

Next, an embodiment of the underdrain forming method of the present invention using the underdrain forming apparatus will be described. First, the culvert forming device 11 connected to the rear of the towing machine 12 is connected to the elevating device 1.
3 and set so that the standing plate 21, the perforated bullet 23, the hydrophobic material guide 28 b, and the like enter the soil 16. Thereafter, when the culvert forming device 11 is towed by the towing machine 12, first, the soiling blades 19b and 19c of the soiling member 19 excavate a surface of the soil 16 on which a lawn or the like grows with a predetermined width. The shovel 20 disposed behind the shovel 20 is provided between the soil scraping blades 19b and 19c.
6a is scraped out.

The left shaving blade 1 provided on the shaving member 19
The soil 16 scraped out in 9b is placed on the soil receiving plate 17 and sequentially sent out to the left side in FIG. In addition, the soil 16 scraped by the right scraping blade 19 c is
It is sent out sequentially from 7 to the right. On the other hand, the shovel 2
The soil 16 scraped out at 0 is sent out along the shovel 20 in the lateral direction of the soil receiving plate 17 as appropriate. As a result, as shown in FIG. 3, the scraped soil 16 on the soil surface 16 a is sequentially discharged from the soil receiving plate 17 to both sides with the movement of the towing machine 11. Therefore, the already excavated trench is not filled with the scraped soil 16.

Next, an upright plate 21 disposed behind the soiling member 19 cuts the hydrophobic groove 16b along the excavated soil surface 16a, and is provided laterally at the lower end of the upright plate 21. A perforation bullet 23 forms a perforation 16c at the bottom end of the hydrophobic groove 16b. At the same time, the roller 26
The surface 16a is rolled and leveled.

As shown in FIG. 4, since the rollers 26 are disposed on both sides of the upright plate 21 and directly above the bullets 23 for piercing, the soil surface 16a is pressed by the rollers 26. Even so, the above-described groove 16b for hydrophobicity does not collapse, and the perforation 16c which is almost a perfect circle can be formed.

On the other hand, a tube 24 connected to the rear portion of the perforation bullet 23 is drawn into the perforation 16c as the towing machine 11 moves. At this time, since the hole 16c has a shape close to a perfect circle as described above, the pipe 24 is not crushed or deformed, and good drainage is maintained.

Then, after that, the hydrophobic groove 16b is formed.
Guide 28 of hydrophobic material filling device 28 inserted in
The hydrophobic material 29 is filled into the groove 16b for hydrophobicity and the hole 16c through the hole b. A gap is formed between the hopper 28a of the hydrophobic material filling device 28 and the hydrophobic material guide portion 28b. Can be removed.

As shown in FIG. 5, when the hydrophobic material 29 is filled, the surface 16a of the soil 1 has already been rolled by the rollers 25, so that the soil surface 16a does not collapse and is retracted. The tube 24 is not deformed. Therefore, permeation performance and drainage performance can be sufficiently ensured.

[0030]

As described above, according to the present invention,
When forming a groove for hydrophobic in the soil with a standing plate and forming a drawing hole for drawing in with a bullet for drilling, while rolling the soil surface located on both sides of the standing plate and directly above the bullet for drilling, using a roller Since the work is performed, it is possible to form a perforation having a shape close to a perfect circle, preventing deformation of the drainage pipe inserted into this perforation,
Good drainage performance can be maintained. In addition, the workability is good because the ground is leveled at the same time when the hydrophobic groove is formed.
Further, even if a hydrophobic material is filled in the hydrophobic grooves and the perforations, since the soil surface is already leveled, the soil surface does not collapse and the permeation performance is not hindered. As a result, high reliability in underdrain formation work can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of an elevator connected to a towing machine and an underdrain forming device according to an embodiment of the present invention connected to the elevator.

FIG. 2 is a perspective view of the elevator and the culvert forming apparatus.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is a cross-sectional view showing a state where a hydrophobic material is filled in a hydrophobic groove by a hydrophobic material filling device of the underdrain formation device.

FIG. 6 is a sectional view showing a state in which a groove for hydrophobicity and a perforation for drawing in are formed by a conventional underdrain forming method.

FIG. 7 is a cross-sectional view showing a state in which the soil surface of a hydrophobic groove is leveled by a conventional underdrain formation method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Culvert forming device 12 Traction machine 13 Elevator 16b Groove for hydrophobicity 16c Drilling 17 Earth receiving plate 18 Arch 19 Scraping member 20 Shovel 21 Standing plate 23 Bullet for drilling 24 Tube 25 Lever 26 Roller 27 Hydraulic cylinder 28 Hydrophobic material filling device 28a Hopper 28b hydrophobic material guide part 29 hydrophobic material

Claims (2)

(57) [Claims] 1. A step of excavating a soil surface in a streak shape by a soil-raising member, forming a groove for hydrophobicity by cutting the soil along an upright with an upright plate, and being attached to a lower end of the upright plate. Forming a pull-in hole at the bottom end of the hydrophobic groove with a punch bullet, drawing a tube connected to the drill bullet into the pull-in hole, and filling the hydrophobic groove with a hydrophobic material. And a method of forming a culvert comprising the steps of: forming the hydrophobic groove and the drawing-in perforation; rolling the soil surface located on both sides of the upright plate and directly above the perforation bullet by a roller. Characteristic culvert formation method. 2. A soil removal member for excavating the soil surface is provided at a rear portion of the traction machine, and a standing plate for cutting a hydrophobic groove in the soil is erected behind the soiling member, and at a lower end of the standing plate. At the bottom end of the groove for hydrophobicity, a bullet for punching is formed at the bottom end of the groove, and a pipe for drawing into the drilling hole is connected to the bullet for punching, and a hydrophobic material filling device is provided behind the standing plate. A culvert forming device provided with a hydrophobic material guide portion for inserting the hydrophobic material into the hydrophobic groove and filling the hydrophobic groove into the hydrophobic groove and the drawing hole; An underdrain forming apparatus, characterized in that rollers are provided on both sides of a standing plate and located immediately above the drilling bullets to roll the soil surface.