JPH0449243Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an underground drainage pipe that is buried underground in order to effectively drain the ground in golf courses, various grounds, etc.

[Conventional technology and its problems]

Conventional underground drainage pipes, for example, are perforated pipes with many small holes in the upper half that run underground, and underground water flows into the perforated pipes through these small holes and then drains. It was being discharged elsewhere. Further, instead of the above-mentioned perforated tube, a tube having a net-like shape all around has been used. However, in the case of the above-mentioned perforated pipe, the small holes are blocked by pebbles and sand, and in the case of the above-mentioned net-shaped pipe, the inside itself is filled with mud and sand, resulting in gradual drainage problems. There was a problem that it became.

The object of the present invention is to provide an underground drainage pipe that solves the above problems.

[Means for solving problems]

The present invention includes a pipe main body portion having a plurality of internal inflow holes arranged along the longitudinal direction near the top surface;
A vertical force receiving part is formed along both side edges and covers approximately the upper half of the main body through a gap, and is fixed near the upper surface of the main body. It has a lateral force receiving part fixed to the vicinity of the surface, and further includes a covering member having an external inflow hole formed vertically in the vicinity of the receiving part.

[Effect]

In the buried state, earth pressure acts on the covering member, but the covering member is not deformed because it is supported by the pipe main body via the pressure receiving portion and the receiving portion, respectively. Furthermore, since they are integrally fixed to the pipe main body, there is no possibility that the two members will separate or move relative to each other. Therefore, approximately the upper half of the pipe main body is always covered by the covering member through the gap, and the external inflow hole is blocked with earth and sand because earth pressure does not directly act on it. Instead, water in the soil enters from the outer inflow hole, passes through the void, and enters the pipe body from the inner inflow hole.

〔Example〕

Embodiments of the present invention will be explained in detail based on the drawings.

In Figures 4, 5, and 6, 1 shown by an imaginary line is the fairway at the golf course, and M...
is a main pipe provided in a direction perpendicular to its longitudinal direction. The main pipe M is buried at a sufficient depth from the ground at a predetermined slope, and is, for example, a humid pipe with a diameter of about 300 mm. An underground drainage pipe H according to the present invention is provided above the main pipe M, and the pipe H is connected to the main pipe M by a vertical pipe V provided in the vertical direction. Specifically, underground drainage pipes H... are buried at a depth of about 0.2 to 0.3 m, and multiple pipes H... are connected to each other and then connected to a vertical pipe V, or one A plurality of vertical pipes V... are connected to the horizontal pipe H, and all are connected to the main pipe M... via the vertical pipes V. In addition, 17
... are pipe joints that connect the drain pipes H, and 18 are pipe joints that connect the vertical pipes V to the drain pipes H or the main pipe M. The underground drainage pipe H must have a certain slope so that the drainage can flow naturally into the vertical pipe V, and therefore the drainage flow rate should be about 0.15 to 0.3 m/sec, which is suitable for the growth of plants such as grass. Set the pipe slope so that Vertical pipe V
... shall be buried vertically, but there is no problem with providing a slight inclination to the vertical line.

As shown in FIG. 1, FIG. 2, and FIG. The covering member 3 has a plurality of inner inflow holes 5 disposed in the vicinity along the longitudinal direction, and the covering member 3 covers approximately the upper half 6 of the pipe main body 2 via the cavity 7, and also covers the main body. A pressure receiving part 8 for vertical force P fixed near the upper surface 4 of the body part 2, and a side face 1 of the main body part 2 formed along both side edges 9, 9.
It has receiving parts 11, 11 for receiving lateral forces F, F fixed in the vicinity of 0, 10, and further has receiving parts 11,
An external inflow hole 12 is vertically bored in the vicinity of 11.
It has...

The pipe main body 2 is, for example, about 50 mm in diameter and 4 m long. In this case, the inner inflow holes 5 are approximately rectangular with dimensions of 5 mm x 20 mm, and arranged in a staggered manner per 1 m of pipe length. Two locations will be established at Although the cross-sectional shape of the pipe main body 2 is hollow and circular, it may have another shape. Note that the narrowest part of the cavity 7 is, for example, approximately 5 mm.
Set to .

Next, regarding the covering member 3, the illustrated example shows a case where the cross-sectional shape is like a hollow circle divided into two, and the pressure receiving part 8 is integrally formed as a projecting shape on the inner diameter side, and the pipe main body part 2 It is fixed to a portion of the upper surface 4 that avoids the inner inflow holes 5 using an adhesive or a solvent. 13 is the above upper surface 4
The vertical force P due to earth pressure is supported by the radial portions 14, 14 on both sides, which serve as ribs. Said receiving section 1
1 and 11 protrude from both side edges 9 and 9 in the inner diameter direction, and are fixed to the lateral surfaces 10 and 10 of the pipe main body 2 . The receiving portions 11, 11 have the external inflow holes 12...
is formed, and the soil water flows into the cavity 7 from the outside inflow holes 12 in the direction of the arrow A. The covering member 3 is supported by the main body portion 2 via the receiving portions 11, 11, although the lateral forces F, F due to earth pressure act on the covering member 3.

The vertical pipes V are provided with inflow portions 15 for allowing soil water to flow in at predetermined positions in the vertical direction, and the inflow portions 15 are formed from inflow portions (not shown) formed in the vertical pipe body. It consists of a hole and an umbrella part 16 to prevent the inflow hole from being blocked by earth and sand (see Fig. 5).

In the state where the lawn is buried in the earth and sand underground as described above, surplus water such as water in the soil enters the voids 7, 7 from the external inflow holes 12, 12, and then
It flows into the pipe main body part 2 from the inner inflow hole 5 in the direction of arrow B. The water in the main body 2 gathers and flows down into the vertical pipes V, flows into the main pipe M together with the infiltrated water from the inflow portions 15, flows through the main pipe M, and is discharged to the outside. Here, the above-mentioned external forces P, F, F act on the covering member 3 due to earth pressure, but due to the structure in which it is integrally fixed to the pipe main body part 2 via the pressure receiving part 8 and the receiving parts 11, 11, Since no deformation occurs and the voids 7, 7 are maintained in the same shape, the flow path will not be blocked. Furthermore, since there is no earth and sand that directly contacts the outer inflow holes 12, 12, which correspond to the entrances of the flow paths, they are not blocked by earth and sand.

The main pipes M may be buried along the longitudinal direction of the fairway 1, as shown in FIG. Further, regarding the underground drainage pipes H..., a plurality of them may be buried in parallel to each other in a direction orthogonal to the main pipe M.

[Effect of idea]

In this way, in the present invention, the pipe main body 2 has a plurality of inner inflow holes 5 disposed along the longitudinal direction near the upper surface 4, and the substantially upper half 6 of the main body 2 is formed with a gap. A vertical force P is applied to the main body 2 through the upper surface 4 and is fixed to the upper surface 4 of the main body 2.
, and lateral force receiving parts 11, 11 formed along both side edges 9, 9 and fixed near the lateral surfaces 10, 10 of the main body part 2. , and a covering member 3 having outer inflow holes 12 vertically bored in the vicinity of the receiving supports 11, 11, thereby preventing the inner and outer inflow holes 5, 12 from being blocked by earth and sand, etc. The drip pipe main body part 2 is not blocked, and the ground can be drained well. In general, better drainage has the effect of raising the underground temperature, increasing drought resistance and fertilizer effectiveness. Therefore, the growth of grass plants such as grass can be promoted, and by burying it under the lawn of a golf course, it is possible to grow strong grass with deep roots.

The pipe main body 2 may be made of standard synthetic resin or metal, and the covering member 3 can be integrally molded from synthetic resin, so it can be mass-produced and provided at low cost.

[Brief explanation of drawings]

Fig. 1 is an enlarged sectional view of the underground drainage pipe according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a sectional view in a buried state, Fig. 4 is a schematic piping diagram when buried in a golf course, 5 is a sectional view taken along the line DD in FIG. 4, FIG. 6 is a simplified perspective view of a pipe joint, and FIG. 7 is a schematic piping diagram showing another embodiment. 2... Pipe main body part, 3... Covering member, 4...
Top surface, 5...Inner inflow hole, 6...Upper half, 7...Gap, 8...Pressure receiving part, 9...Side edge, 10...Side surface, 11...Receiving section, 12...Outer inflow Hole, P...
Vertical force, F...lateral force.

Claims (1)

[Claims for Utility Model Registration] A pipe main body 2 having a plurality of internal inflow holes 5 disposed along the longitudinal direction in the vicinity of the upper surface 4, and substantially the upper half 6 of the main body 2 as a cavity 7. A pressure receiving part 8 for vertical force P is fixed near the upper surface 4 of the main body 2, and a lateral surface 1 of the main body 2 is formed along both side edges 9, 9.
0, 10, and further includes receiving portions 11, 11 for receiving lateral forces F, F fixed in the vicinity of 0, 10, and
An underground drainage pipe comprising: a covering member 3 having external inflow holes 12 vertically bored in the vicinity of the drainage pipes 1 and 11.