JPH08144251A - Soil layer drainage system construction - Google Patents

Abstract

PURPOSE: To provide a soil layer drainage system capable of draining smoothly rain water subsequently to a drainage layer from the surface soil of a soil layer required for drainage when it rains and to make it possible to prevent the surface soil from forming puddles. CONSTITUTION: A soil layer drainage system is equipped with an underdrainage pipe 3 buried in a drainage layer 2 in the lower layer of the surface soil of a soil layer required for drainage and a vacuum pump 4 for vacuumizing and absorbing water in the pipe 3 in a state to make the inside thereof as negative pressure by connecting the vacuum pump to the underdrainage pipe 3. The underdrainage pipe 3 is so formed that the negative pressure in the vicinity of the vacuum pump 4 is equivalent to the negative pressure in the side separated from the vacuum pump 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil layer capable of improving drainage of a soil layer (such as a lawn) which requires drainage and is planted in a golf course, various stadiums, parks, etc. Regarding drainage structure.

[0002]

2. Description of the Related Art Generally, in a golf course or the like where a lawn or the like is planted and a soil layer that requires drainage is laid, a clay layer is provided for growing the lawn. Therefore, when only a large amount of natural drainage is retained in the clay layer when a large amount of rainfall occurs, a large amount of rainwater is not sufficiently drained and accumulates on the surface of the ground, which causes a hindrance to golf competitions, soccer competitions and the like. However, it is difficult for the lawn to grow and it is difficult to provide a sandy layer with good drainage property as a lawn planting layer, and draining a large amount of rainwater has been a problem.

[0003]

Therefore, in order to improve the drainage of this golf course and the like, the inventors of the present invention, by gravity action between the soil particles of the soil layer surface soil that the rainwater needs to drain during rain. Focusing on the fact that it permeates into the drainage layer and is drained, various research has been conducted on improving drainage in this drainage layer, and as a result, we devised a drainage structure that improves this drainage while ensuring sufficient growth of the lawn, We have come to realize this.

The present invention has been made in view of the above circumstances, and when raining, it is possible to satisfactorily perform drainage of rainwater that permeates the drainage layer from the soil layer surface soil that requires drainage, and to prevent a pool of water. The purpose is to provide a soil layer drainage structure that can be prevented.

[0005]

The present invention has been made to achieve the above object, and the soil layer drainage facility structure according to claim 1 is a drainage layer below the surface soil of the soil layer requiring drainage. And a vacuum pump connected to the underdrain drainage pipe to make the inside of the drainage pipe in a negative pressure state and to absorb moisture into the drainage pipe in a vacuum. In the soil layer drainage facility structure according to a second aspect of the present invention, the drainage pipe is formed so that the negative pressure in the vicinity of the vacuum pump and the negative pressure in the side away from the vacuum pump become equal.

According to a third aspect of the present invention, there is provided a soil layer drainage facility structure, wherein a plurality of branch drainage pipes are embedded in a drainage layer from the main body of the underdrain drainage pipe in such a manner that the branch drainage pipes are connected and arranged side by side. The cathode lines are embedded side by side in close proximity to the drainage pipe, and the anode lines are embedded side by side at predetermined intervals between the cathode lines. In the soil layer drainage facility structure according to claim 4, the cathode wire is formed of a copper wire and the anode wire is formed of an aluminum wire. In the soil layer drainage facility structure according to a fifth aspect of the present invention, the drainage pipe has an upper portion formed in a mesh shape and the periphery thereof is covered with gravel.

In the soil layer drainage facility structure according to a sixth aspect of the present invention, the drainage pipe is formed in a mesh shape throughout. In the soil layer drainage facility structure of claim 7, the drainage pipe is a perforated pipe having a plurality of holes formed therein.
In the soil layer drainage facility structure of claim 8, an impermeable sheet is laid on the lower side of the drainage pipe.

[0008]

According to the soil layer drainage facility structure of claim 1, rainwater that has penetrated into the drainage layer from the surface soil of the soil layer that needs to be drained at the time of rainfall is vacuum-sucked by the underdrain drainage pipe, which is in a negative pressure state by the vacuum pump. Are forcibly absorbed and drained. This allows
The occurrence of water pools during rainfall is reduced. Claim 2
According to the soil layer drainage facility structure, the drain pipe is formed so that the negative pressure on the side near the vacuum pump and the negative pressure on the side away from the vacuum pump become equal. It works equally and sufficiently on the side away from the pump, and water absorption and drainage by vacuum suction are performed well over the entire soil layer that requires drainage.

According to the soil layer drainage facility structure of claim 3, since the water adhering to the soil particles is anionized and the water in the outer free layer is cationized, the cathode ray and the anode ray are When a direct current is applied to and, the water in the soil moves from the anode line side to the cathode line side and gathers on the side of the branch drain pipe buried close to the cathode line side and vacuum-sucked to this branch drain pipe. The water is drained through the underdrain pipe connected to the branch drain pipe. Therefore, better drainage of rainwater is performed. According to the soil layer drainage facility structure of claim 4, since the cathode wire is formed of the copper wire and the anode wire is formed of the aluminum wire, it is possible to strongly form the cathodic property and the anodic property, and the rainwater can be formed. The cathode ray of is moved more strongly to the side of the branch drain pipe that is close to it, and rainwater can be absorbed and drained better.

According to the soil layer drainage facility structure of the fifth aspect, since the upper part of the drainage pipe is formed in a mesh shape, rainwater can be absorbed without trouble, and the surroundings are covered with gravel. It is possible to reduce the suction of impurities such as mud into the drain pipe, and prevent the drain pipe from being clogged. According to the soil layer drainage equipment structure of the sixth aspect, since the drainage pipe is formed in a mesh shape over the whole, rainwater can be absorbed over the entire drainage pipe without trouble.

According to the soil layer drainage facility structure of claim 7, since the drainage pipe is a perforated pipe in which a plurality of holes are formed, it is possible to absorb rainwater into the pipe through the plurality of holes without hindrance. You can do it. According to the soil layer drainage facility structure of claim 8, since the impermeable sheet is laid on the lower side of the drainage pipe, the impermeable sheet does not allow pesticides to penetrate into the soil.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the soil layer drainage facility structure according to the present invention will be described below with reference to the drawings. As shown in FIG. 1, the soil layer drainage structure of this embodiment is connected to the underdrain drainage pipe 3 which is added to the drainage layer 2 below the top soil 1 of the soil layer that requires drainage, and this underdrain drainage pipe 3. And a vacuum pump 4 for vacuuming the water in the drainage pipe by bringing the inside of the pipe into a negative pressure state.

The drain pipe 3 is formed so that the negative pressure on the side near the vacuum pump 4 and the negative pressure on the side away from the vacuum pump become equal. Although this structure is not particularly limited, for example, the drain pipe 3 may be formed with a small diameter on the side near the vacuum pump 4 and a large diameter on the side away from the vacuum pump 4, or may be formed on the side near the vacuum pump 4. A plurality of small holes are provided and a large diameter hole is provided on the side distant from the vacuum pump 4, or the near side of the vacuum pump 4 is formed with a small diameter and a plurality of small diameter holes are provided, and the vacuum pump 4 It is advisable to adopt an appropriate structure such that the side away from is formed to have a large diameter and a plurality of large holes are provided. The vacuum pump 4 is housed in a storage box 10 buried in the soil, and a drain pipe 9 that communicates from the storage box 10 to a drainage channel (not shown).
Is buried in the soil. Vacuum pump 4 depending on the case
May be on the ground and only the connecting pipe such as a hose may be buried in the soil.

Further, as shown in FIG. 2, a plurality of branch drainage pipes 3b are embedded in the drainage layer 2 from the main body portion 3a of the underdrain drainage pipe 3 so as to be communicated and arranged side by side. The cathode lines 5 are embedded in parallel in the vicinity of the drainage pipes 3b, and the anode lines 6 are embedded in parallel with each other at a predetermined interval between the cathode lines 5. The cathode lines 5 are made of copper wire. The anode wire 6 is made of aluminum wire.

Further, as shown in FIG. 4, the drainage pipe 3 is in a state in which the upper portion thereof is formed in a mesh shape and the periphery thereof is covered with the gravel 7. Also, this drain pipe 3
May be formed in a mesh shape over the whole, or may be formed by a perforated tube having a plurality of holes formed therein. An impermeable sheet 8 is laid on the lower side of the drain pipe 3. Here, as shown in FIG. 1, the vacuum pump 4 is preferably arranged at a lower position with respect to the main body portion 3a of the underdrain drainage pipe 3 in order to smooth the flow of the sucked rainwater.

Next, the operation of the soil layer drainage structure constructed as described above will be described. When the rainwater on the top soil 1 of the soil layer that requires drainage at the time of rainfall is vacuumed into the underdrain drainage pipe 3 that has been negatively pressured by the vacuum pump 4, the rainwater that has already permeated into the drainage layer 2 is sucked into the drainage layer 2. Rainwater on topsoil 1 is forcibly absorbed, resulting in drainage. Here, since the drain pipe 3 is formed so that the negative pressure on the side near the vacuum pump 4 and the negative pressure on the side remote from the vacuum pump 4 are equal, the vacuum suction force is It works equally well on the side away from No. 4, and water is absorbed and drained well by vacuum suction over the entire soil layer that requires drainage.

Further, the water adhering to the soil particles is anionized, and the water in the free layer on the outer periphery is positively ionized. Therefore, when a direct current is applied to the cathode wire 5 and the anode wire 6, the water is drained. The water in the soil in the layer 2 moves from the anode line 6 side to the cathode line 5 side, collects on the side of the branch drainage pipe 3b buried close to the cathode line 5 side, and the branch drainage pipe 3b is vacuumed. The water is sucked and absorbed, and is drained through the underdrain drainage pipe 3 to which the branch drainage pipe 3b is connected. Moreover, since the cathode wire 5 is formed of a copper wire and the anode wire 6 is formed of an aluminum wire, the cathodic property 5 and the anodic property 6 can be strongly formed, and the cathodic wire 5 is in the form of a branch. The rainwater can be moved more strongly to the drain pipe 3b side, and the rainwater can be absorbed and drained better.

Further, since the upper portion of the drainage pipe 3 is formed in a mesh shape, rainwater can be absorbed without any trouble, and moreover,
Since the periphery thereof is covered with the gravel 7, impurities such as mud can be prevented from being sucked into the drain pipe 3, and the drain pipe 3 can be prevented from being clogged. Further, since the water-impermeable sheet 8 is laid on the lower side of the drainage pipe 3, the water-impermeable sheet 8 prevents pesticides and the like from penetrating into the soil.

In this embodiment, the cathode wire 5 is made of copper wire and the anode wire 6 is made of aluminum wire. However, the present invention is not limited to this. Of course, it is also possible to use the above metal wire. The present invention is applicable not only to the soil layer of a golf course where a lawn is planted, but also to a drainage structure of the soil layer of a park, a stadium, a schoolyard, or the like.

[0020]

As described above, the soil layer drainage facility structure according to claim 1 has the underdrain pipe embedded in the drainage layer below the soil layer requiring drainage, and the pipe connected to the underdrain pipe. And a vacuum pump for vacuuming the water in the drainage pipe, the following effects are obtained. That is, the rainwater on the topsoil of the soil layer that needs to be drained when it rains is forcibly sucked from the topsoil into the drainage layer by suctioning the rainwater that has already permeated into the drainage layer into the underdrain drainage pipe that has been placed under a negative pressure by the vacuum pump. Since it is drained after being drained, the rainwater that permeates the drainage layer from the soil surface soil that requires drainage can be drained well during rainfall, and a water pool can be prevented from occurring.

In the soil layer drainage facility structure according to a second aspect of the present invention, the drainage pipe is formed so that the negative pressure in the vicinity of the vacuum pump and the negative pressure in the side away from the vacuum pump become equal. However, it acts equally and sufficiently on the side distant from the vacuum pump, and it is possible to uniformly and satisfactorily absorb and drain water by vacuum suction over the entire soil layer that requires drainage. In the soil layer drainage facility structure according to claim 3, a plurality of branch drainage pipes are embedded in the drainage layer from the main part of the underdrain drainage pipe by branching in a communication manner and in parallel, and adjacent to these branch drainage pipes. Then, the cathode lines are embedded side by side, and the anode lines are embedded side by side at a predetermined interval between these cathode lines, so that the following effects are achieved.

That is, since the water adhering to the soil particles is anionized and the water in the outer free layer is positively ionized, when a direct current is passed between the cathode line and the anode line, the Water moves from the anode line side to the cathode line side and collects on the side of the branch drainage pipe that is buried close to the cathode line side.The branch drainage pipe is vacuum-sucked and absorbs water. Since the water is drained through the connected underdrain drainage pipe, better drainage of rainwater can be performed.

In the soil layer drainage facility structure of claim 4, since the cathode wire is formed of a copper wire and the anode wire is formed of an aluminum wire, it is possible to strongly form a cathode and an anode. The rainwater can be more strongly moved to the side of the branch drainage pipe where the cathode lines are close to each other, and the rainwater can be absorbed and drained better. In the soil layer drainage structure according to claim 5, since the drain pipe is formed in a mesh shape and the periphery thereof is covered with gravel, rainwater can be absorbed without any trouble, and the periphery thereof is gravel. Since it is covered, it is possible to reduce the suction of impurities such as mud into the drain pipe and prevent the drain pipe from being clogged.

Since the soil layer drainage facility structure of the billing hole 6 is formed in a mesh shape over the whole, rainwater can be favorably absorbed without any trouble. In the soil layer drainage structure of claim hole 7, since the drainage pipe is a perforated pipe in which a plurality of holes are formed, rainwater absorption from the plurality of hole portions to the inside of the pipe can be favorably performed. You can do it. In the soil layer drainage facility structure of the claim hole 8, since the impermeable sheet is laid on the lower side of the drainage pipe, the impermeable sheet does not allow pesticides to penetrate into the soil, thereby preventing pollution by pesticides. It can be prevented.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of a soil layer drainage facility structure according to the present invention.

FIG. 2 is a schematic plan view of a soil layer drainage facility structure of an example.

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

FIG. 4 is a partial perspective view showing an underdrain drainage pipe and members around it.

[Explanation of symbols]

 1 Surface soil of soil layer that requires drainage 2 Drainage layer 3 Underdrain drainage pipe 3a Main body 3b Branch drainage pipe 4 Vacuum pump 5 Cathode line 6 Anode line 7 Gravel 8 Impermeable sheet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masanobu Sugie 186-1006, Daito-cho, Ashiya-shi, Hyogo SK Engineering Co., Ltd. No. 4-7 Nuve Kobe 509 Limited Company Grandwork (72) Inventor Yoshio Sakamoto 2-15-6 Nishijuku, Minoh City, Osaka Prefecture Max Lane Co., Ltd.

Claims (8)

[Claims] 1. An underdrain drainage pipe embedded in a drainage layer below a topsoil of a soil layer requiring drainage, and a vacuum pressure inside the drainage pipe connected to the underdrain drainage pipe to make a negative pressure inside the drainage pipe. Soil drainage structure, comprising a vacuum pump for 2. The soil layer requiring drainage according to claim 1, wherein the drainage pipe is formed so that the negative pressure near the vacuum pump and the negative pressure away from the vacuum pump become equal. Drainage structure. 3. A plurality of branch drainage pipes are branched and embedded in a drainage layer from the main body of the underdrain drainage pipe into a drainage layer so as to communicate with each other, and the cathode drains are respectively provided in proximity to the branch drainage pipes. 3. The earth layer drainage facility structure according to claim 1, wherein the structure is buried in a line and the anode lines are buried in a line at a predetermined interval between the cathode lines. 4. The soil layer drainage facility structure according to claim 3, wherein the cathode wire is formed of a copper wire and the anode wire is formed of an aluminum wire. 5. The soil layer drainage facility structure according to claim 1, wherein the drainage pipe has an upper portion formed in a mesh shape and the periphery thereof is covered with gravel. . 6. The soil layer drainage facility structure according to claim 1, wherein the drainage pipe is formed in a mesh shape over the entire drainage pipe. 7. The soil layer drainage facility structure according to claim 1, wherein the drainage pipe is a perforated pipe having a plurality of holes formed therein. 8. The soil layer drainage facility structure according to claim 1, wherein an impermeable sheet is laid on the lower side of the drainage pipe.