JPH0860644A - Drainage pipe - Google Patents

Abstract

PURPOSE: To provide a drainage pipe capable of draining water efficiently, at the same time, to form it in a simple shape at a low manufacturing cost and to prevent the deformation or crush because of a rigid section. CONSTITUTION: A drainage pipe is constituted of a conic cap 3 provided to the front end and a narrow drainage pipe main body 2 fitted thereto, and a large number of slits 7 are formed in the drainage pipe main body 2. Reinforcing members 4 are inserted into recessed grooves of the drainage pipe main body 2 and are held firmly in order to reinforce the slits 7. The drainage pipe main body 2 is wrapped with a net-like member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage pipe suitable for draining and removing water from slopes such as mountainous areas and underground such as tunnels. Drainage tube that is easy to do.

[0002]

2. Description of the Related Art It is necessary to remove water contained in the ground on slopes, tunnels, etc. in mountainous areas where the ground is relatively weak. As shown in FIG. 10, when the water content in the ground increases, part of the slope 8 collapses, causing a so-called landslide.
Moreover, there is a risk that a mountain tsunami will occur due to an increase in water content.

As a means for removing water in the ground, for example, a drainage pipe 13 as shown in FIG. 11 is used.
The drainage pipe 13 is composed of an elongated hollow pipe having a large number of through holes 14. The insertion hole 16 inclined so that the opening 15 is located at the lower position is bored in advance on the slope 8 of the mountain portion, and the drainage pipe 13 having the above structure is inserted into the insertion hole 16. The water in the ground 17 enters the drainage pipe 13 through the through hole 14 and is removed from the lower end of the drainage pipe 13 on the opening 15 side.

However, the drainage pipe 13 shown in FIG.
In that case, it is necessary to drill the insertion hole 16 in advance, which is troublesome. In addition, there is a problem that the drainage efficiency is reduced due to problems such as clogging of the through hole 14 due to earth and sand and crushing of the drainage pipe 13 due to ground pressure. Therefore, in the prior art, the drain pipe 1a having the conical cap 3a at its tip as shown in FIG. 12 was used.

[0005]

The drainage pipe 1a shown in FIG. 12 has a conical cap 3a and an elongated drainage pipe body 2a.
It is made by fitting. Although not clearly shown in the figure, the drainage pipe main body 2a has a complicated cross-section in which a central hole and a plurality of water-conducting holes are formed along the axial direction of the pipe body, and the water-conducting hole and the outer peripheral side are communicated with a slit. It has a surface shape. With the conical cap 3a, the drainage pipe 1a can be driven without boring the insertion hole in advance, and the water in the ground is guided to the central hole and the water guiding hole through the slits and positively moves in the axial direction of the pipe body. Will be eliminated.

However, the drainage pipe 1a also has the following problems. As described above, the drainage pipe 1a effectively removes moisture in the ground, but the structure of the drainage and the pipe body 2a is complicated, and the cost of the molding die is high. There is.

Further, since the mold is used, the manufacturing cost becomes large. Further, the joint pipe 18 required for extending the drainage pipe main body 2a in the axial direction also needs to have a shape corresponding to the cross-sectional shape of the drainage pipe main body 2a, which causes a problem of high cost. In addition, there is no means for preventing deformation and crushing of the drainage pipe main body 2a, and there is a problem that it is not suitable for a place with high ground pressure.

The present invention solves the above problems, and provides a drainage pipe which can be easily manufactured at low cost, is not easily deformed or crushed by ground pressure, and has high drainage efficiency. With the goal.

[0009]

In order to achieve the above object, the present invention is installed in the ground to remove water contained in the ground such as a slope of a mountain or a tunnel. A drainage pipe comprising a conical cap formed at the tip in the driving direction and an elongated hollow drainage pipe body fitted to the conical cap. A drainage pipe formed by forming a concave groove that bulges inward along the axis of the pipe body in the portion and forming a plurality of slits with an appropriate depth in the direction intersecting the axis of the pipe body along the axial direction. It is what constitutes.

More specifically, an elongated reinforcing member having a cross-sectional shape corresponding to the concave groove is attached and fixed to the concave groove, and the slit is formed by inclining to the slope of the mountain portion. The drainage pipe body is formed obliquely at an angle corresponding to the inclination angle of the drainage pipe, and the drainage pipe body is covered with a net-like member, and the drainage pipe body is provided on the outer circumference or the inner circumference thereof. It is connected by a fitting pipe that is fitted,
The joint pipe fitted to the inner circumference of the water drainage pipe main body has a hoof-shaped cross section.

[0011]

Since a large number of slits are formed in the drainage pipe, water in the ground is positively introduced into the pipe through the slits and eliminated. Further, the cross-sectional rigidity is improved by forming the concave groove inwardly in a part of the outer periphery, and the rigidity reduction due to the slit formation is prevented by inserting and fixing the reinforcing member in the concave groove. . As described above, the deformation and crushing of the tubular body are prevented. Further, since the slits can be formed very easily with a cutter, no mold is required, and the manufacturing cost is greatly reduced. Further, the shape of the joint pipe is extremely simple, and the cost can be reduced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial sectional view showing the entire structure of this embodiment, and FIG.
Is a side view of the drainage pipe main body of this embodiment, and FIG. 3 is a line A in FIG.
-A sectional view, FIG. 4 is a schematic side view showing a state when a drainage pipe having an inclined slit is used, FIG. 5 is a side view of the drainage pipe body of FIG. 4, and FIG. FIG. 7 is a cross-sectional view of the drainage pipe main body, FIG. 7 is a partial perspective view showing the drainage pipe main body covered with a net-like member and a reinforcing member inserted into the groove, and FIG. FIG. 9 is a cross-sectional view showing an example.
FIG. 4 is a side view showing a usage state of the present embodiment.

As shown in FIG. 1, the drainage pipe 1 comprises a conical cap 3 and a drainage pipe body 2. In addition, the reinforcing member 4 is inserted and fixed to the drainage pipe main body 2 of the present embodiment. Further, a joint pipe 5 for connecting the drainage pipe bodies 2 and 2 is used. The drainage tube body 2 is fitted to the conical cap 3 as shown.

As shown in FIGS. 1 to 3, the drainage pipe main body 2
Is a hollow pipe made of a synthetic resin material, and a concave groove 6 that bulges inward is formed in a part of the outer periphery of the hollow pipe, as shown in FIG. Further, a large number of slits 7 are formed at appropriate intervals along the tube axis. The slit 7 is composed of a groove having an appropriate width cut to a substantially central position of the tubular body. In the present embodiment, the slit 7 is formed substantially orthogonal to the axial line of the tubular body, but is not limited to this as will be described later.

The reinforcing member 4 is an elongated member having a cross-sectional shape that matches the groove 6, and is made of, for example, a synthetic resin material. The reinforcing member 4 is inserted into the groove 6 and fixed to the groove 6 side with an adhesive or the like. By fixing the reinforcing member 4 to the concave groove 6, the pipe rigidity is prevented from being lowered by the slit 7, and the slit 7 is prevented from being blocked or crushed.

The slit 7a of the drainage pipe main body 2 shown in FIGS. 4 and 5 is formed to be slightly inclined with respect to the axis of the pipe body. When the drainage pipe 1 is cast on the slope 8 of the mountain portion, it is inclined upward by the inclination angle θ. This is because water in the ground introduced into the drainage pipe 1 is guided downward along the inclination angle to effectively drain water. As shown in FIG. 4, the slit 7a of the drainage pipe 1 of this embodiment has a drainage pipe 1
Is formed by inclining by an angle θ so as to be oriented exactly in the vertical direction in the state of being mounted on the slope 8. The detailed structure is shown in FIG.

On the other hand, as shown in FIG. 1, the conical cap 3 is made of a conical hard member having a sharp tip, and a communication passage 9 and the like are formed inside. The communication passage 9 communicates with a flowing water passage 10 that is open to the outside. With the above structure, the water flowing from the running water passage 10 into the communication passage 9 is drained by the drain pipe 1.
Introduced to the side.

FIG. 6 shows an embodiment in which a net-like member 11 is provided on the outer periphery of the water draining pipe main body 2 of the water draining pipe 1 for preventing dust and dust and dirt from entering. The net-shaped member 11 is made of a mesh tube having an appropriate mesh, and encloses the outer periphery of the drainage pipe body 2a. As shown in FIG. 7, the outer periphery of the drainage pipe main body 2a is covered with a net-shaped member 11, and then the reinforcing member 4 is inserted into the groove 6 and a part of the net-shaped member 11 is pushed into the groove 6 to reinforce the reinforcing member. Fix 4 The net-shaped member 11 is firmly held by the reinforcing member 4, and the water that has entered from the mesh of the net-shaped member 11 flows into the slit 7 side.

FIG. 8 shows an embodiment of a joint pipe connecting the drainage pipe bodies 2 and 2. The joint pipe of this embodiment comprises a hoof-shaped socket 12 fitted on the inner circumference of the drainage pipe main body 2. The hoof-shaped socket 12 is formed in a horseshoe shape having an opening on the upper side in the figure, and is formed in a shape such that the outer peripheral surface thereof contacts the inner circumference of the drainage pipe main body 2 excluding the bulging portion of the concave groove 6. The drainage pipe body 2 is sequentially connected by the hoof-shaped socket 12 so that the drainage pipe body 2 having a desired length can be formed.

The operation of this embodiment will be described with reference to FIG. On the slope 8 of the mountain portion, the drainage pipe 1 is driven upward as shown in the drawing. Although only one drainage pipe 1 is placed in the drawing, of course, a large number of drainage pipes 1 are placed on the slope 8 or the like. Since the conical cap 3 is provided at the tip of the drainage pipe 1, the drainage pipe 1 does not require boring of the insertion hole in advance.
Is easily placed.

A holding cap 1 is provided on the opening side of the drainage pipe 1.
9 is fitted to hold the drainage pipe 1 on the slope 8. Underground 17
The water inside is introduced from around the conical cap 3 and is introduced into the drainage pipe 1 through a large number of slits 7. The water that has entered the drainage pipe 1 advances toward the opening along the downward inclination of the drainage pipe 1 and is distributed from the position of the holding cap 19. Even if the ground pressure in the ground 17 acts on the drainage pipe 1, the drainage pipe body 2 is not deformed by the reinforcing member 4. Therefore, stable water removal is performed for a long period of time.

Further, in the drainage pipe of the present invention, FIG.
Brushing from the opening of the drainage pipe (the side on which the holding cap 19 is fitted) while being cast on the slope,
It can be washed with water, an air gun, or the like, which enables long-term water removal.

In the above description, the shape of the conical cap 3 is illustrated, but the shape is not limited thereto. Further, the shape of the concave groove 6 of the drainage pipe main body 2 is not limited to that shown in the drawing, and the shape and depth of the slit 7 are not limited to those shown in the drawing. Also, the joint pipe may be fitted to the outer surface, and may be a simple hollow pipe.

[0024]

According to the present invention, the following remarkable effects are obtained. 1) Since the water is drained by the slit, the manufacturing cost of the water drain pipe is extremely reduced. 2) Equipment costs can be reduced because a complicated molding die is not required. 3) The sectional rigidity can be increased by forming a groove and adopting a structure in which a reinforcing member is inserted into the groove. This does not cause deformation or crushing of the pipe. 4) The slit allows water to be drained stably and efficiently. 5) The structure of the joint pipe that connects the drainage pipe main bodies is simplified, and the overall cost can be reduced. 6) A drainage pipe of any shape can be manufactured relatively easily.

[Brief description of drawings]

FIG. 1 is a side view with a partial cross section showing the overall structure of an embodiment of the present invention.

FIG. 2 is a partial side view of the drainage pipe main body of the present embodiment.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a partial cross-sectional view showing a driven state of a drainage pipe having an inclined slit.

5 is a partial side view of the drainage pipe main body of FIG.

FIG. 6 is a transverse cross-sectional view of the water drainage pipe body encapsulated with a net-shaped member.

FIG. 7 is a partial perspective view showing a drainage pipe main body covered with a net-like member and a reinforcing member inserted into the groove.

FIG. 8 is a transverse cross-sectional view showing a hoof-shaped socket of an embodiment of a joint pipe fitted to the inner circumference of the drainage pipe body.

FIG. 9 is a partial cross-sectional view showing the driving state and water draining action of the slope in the mountain portion of the present embodiment.

FIG. 10 is a cross-sectional view showing a landslide condition on a slope.

FIG. 11 is a cross-sectional view showing a conventional drainage pipe.

FIG. 12 is a sectional view showing a conventional improved drainage pipe.

[Explanation of symbols]

 1 Drainage Pipe 2 Drainage Pipe Body 2a Drainage Pipe Body 3 Conical Cap 4 Reinforcement Member 5 Joint Pipe 6 Recessed Groove 7 Slit 7a Slit 8 Slope 8 Communication Passage 10 Running Water Passage 11 Net-shaped Member 12 Hoof Socket 17 Medium 19 holding cap

Claims (6)

[Claims] 1. A drainage pipe that is cast in the ground to remove water contained in the ground such as slopes of mountainous areas and tunnels, and is a cone formed at the tip in the driving direction. -Shaped cap and an elongated hollow water drainage pipe main body fitted to the cap, and the water drainage pipe main body has a concave groove that bulges inward at a part of its outer periphery along the pipe axis. The drainage pipe is characterized in that it is formed by forming a plurality of slits having an appropriate depth in the direction intersecting the tubular body axis line along the axial direction. 2. The drainage pipe according to claim 1, wherein an elongated reinforcing member having a cross-sectional shape corresponding to the groove is attached and fixed to the groove. 3. The drainage pipe according to claim 1, wherein the slit is formed obliquely at an angle corresponding to the inclination angle of the drainage pipe that is obliquely cast on the slope of the mountain portion. 4. The drainage pipe according to claim 1, wherein the drainage pipe body is covered with a net-shaped member. 5. The water drainage pipe main body is connected by a joint pipe fitted to the outer circumference or the inner circumference thereof.
Drainage tube. 6. The drainage pipe according to claim 5, wherein the joint pipe fitted to the inner circumference of the drainage pipe main body has a hoof-shaped cross section.