JPH08184090A - Construction method and culvert for underground infiltration of rainwater, etc. - Google Patents

Abstract

PURPOSE: To infiltrate a large quantity of rainwater, etc., under the ground by combining slots for infiltrating rainwater formed to an aqueduct, a perforated pipe and a perforated drain pipe. CONSTITUTION: A required number of slots 6 for infiltrating rainwater are bored to both sidewall sections 3 of an aqueduct 2 formed by continuously connecting box type culverts 1 having opening sections 5 for communication in fronts and rears while a required number of perforated-pipe inserting holes 7 are bored. Long-sized perforated pipes 8 are fitted to the perforated-pipe inserting holes 7, and rainwater, etc., are infiltrated under the ground from the slots 6 for infitrating rainwater and the long-sized perforated pipes 8 within a wide range. A required number of the slots 6 for infiltrating rainwater are bored to both side sections of the box type culverts 1 having the opening sections 5 for communication in the fronts and the rears while a required number of the perforated-pipe inserting holes 7 are drilled at that time, and the long-sized perforated pipes 8 are mounted into the perforated-pipe inserting holes 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a sewage treatment,
There is a rainwater underground infiltration system that allows most of the rainwater to infiltrate into the ground, and allows only the part that could not be infiltrated to flow to culverts. The present invention relates to an underground infiltration method for rainwater and the like for this underground infiltration system, and a culvert for underground infiltration of rainwater and the like.

[0002]

2. Description of the Related Art In this type of culvert, the top plate,
A box culvert body having a rectangular box shape composed of both side plate parts and a bottom plate part and having front and rear surfaces as communication opening faces is integrally formed by concrete or the like. A box culvert for infiltration of underground water such as rainwater, in which a thin-walled hollow surface is formed by forming a thin-walled hollow surface portion and a required number of holes for rainwater penetration are formed in the required surface area of both thin-walled hollow surface portions. No. 64-42377) is used to directly permeate through rainwater permeation holes.

[0003]

However, in the underground infiltration method using the box culvert for underground infiltration of rainwater and the like in the above-mentioned prior art, since it directly infiltrates underground through the rainwater infiltration hole provided in the side wall of the waterway, a large amount of it can be processed at once. Can't handle rainwater. Further, the both side plate portions are thinly recessed to form a thin recessed surface portion, and a required number of elongated holes for permeating rainwater are formed in a required side surface portion of both thin recessed surface portions. Moreover, in order to improve the circulation of rainwater, it is necessary to form many rainwater permeation holes. Therefore, there is a problem that the strength of the box culvert body is weakened.

In view of these circumstances, the present invention utilizes the perforated pipe insertion hole for the insertion portion of the perforated pipe in addition to the long holes for rainwater permeation on both side walls of the water channel without forming the thin recessed surface portion, Since a long porous tube is inserted and water permeates and permeates in a wide range through a large number of holes of this long porous tube, rainwater and the like can permeate extremely well into the underground. In addition, it is possible to install a perforated drainage pipe to collect the water flowing out from the long hole for rainwater infiltration and temporarily store it to infiltrate it underground. Moreover, since the area occupied by the holes formed in the culvert body is small and the thin hollow surface portion is not formed, it is an object of the present invention to provide a culvert for infiltration into the underground such as rainwater that is strong in strength.

[0005]

The present invention adopts the following technical means in order to solve the above problems. According to the first aspect of the present invention, a required number of long holes for rainwater permeation are formed in both side walls of a water channel formed by continuously connecting box-type culverts having front and rear communication openings. A technical means in which a plurality of perforated pipe insertion holes are bored, a long perforated pipe is attached to the perforated pipe insertion holes, and rainwater and the like permeate underground through a long hole for permeating rainwater and a long perforated pipe in a wide range. It was adopted. According to the invention of claim 2, in addition to the invention of claim 1, a porous drainage pipe is connected to the tip of the long porous pipe, and a rainwater permeation long hole, a long porous pipe and a porous drainage pipe are used. We adopted the technical means of permeating rainwater into the ground underground over a wide area. In the invention according to claim 3, a porous drainage pipe is embedded in the water channel by arranging box-type culverts provided with communication openings on the front and rear surfaces in a continuous manner to both side walls of the water channel and below the bottom wall. The technical means was adopted to allow rainwater, etc., flowing out from the long hole for rainwater penetration, to permeate underground through a perforated drainage pipe. In the invention according to claim 4, in a box-type culvert having communication openings on front and rear surfaces,
A technical means was adopted in which a required number of long holes for permeating rainwater were bored on both sides, a required number of perforated pipe insertion holes were bored, and long perforated pipes were attached to the perforated pipe insertion holes.

[0006]

As a result of adopting the above technical means, the present invention does not form a thin recessed surface portion on both sides of the culvert body, and also uses a long hole for rainwater penetration and a long perforated pipe together. As a result, the distribution of water can be improved and the water can be smoothly penetrated into the ground. And when a large amount of rainwater etc. flows in,
By using an appropriate number of long perforated pipes, it is possible to permeate a wide area and process quickly. In addition, since it is possible to temporarily permeate and store water by using the porous drain pipe, it is possible to treat even a large amount of water flowing in.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. First, a first embodiment of an underground infiltration method employing a culvert for underground infiltration of rainwater or the like will be described with reference to FIG.

Numeral 1 is an open type culvert integrally formed entirely of concrete or synthetic resin. The culvert 1 has a U shape composed of a water channel 2, both side wall portions 3, 3 and a bottom wall portion 4, and an opening 5 for communicating the front and rear portions is formed. The opening 5 for communicating
The required number of comrades are connected and buried in the ground to form a sewer.

Further, a required number of long holes 6 for penetrating rainwater are formed in the both side walls 3, 3. Further appropriate place,
For example, the long hole 6 for permeating rainwater is slightly shortened, and the perforated pipe insertion holes 7 are formed above and below it. Further, the perforated portions can be provided for all of the rainwater permeation long holes 6 or can be provided at intervals.

Further, the bottom wall portion 4 is also provided with a perforated tube insertion hole 7 into which a long perforated tube 8 can be inserted. In addition, the bottom wall 4 of the culvert 1 is designed to infiltrate rainwater underground. Therefore, the number of establishments,
The shape does not matter at all and may be omitted in some cases. A long porous tube 8 is inserted and attached to the porous tube insertion hole 7.

The long perforated tube 8 is a tube made of synthetic resin, metal or the like having a large number of holes formed therein, and its length can be appropriately designed. It is conceivable that the long porous tube 8 to be inserted into the porous tube insertion hole 7 provided in the bottom wall portion 4 of the culvert 1 is formed in an inverted T shape as shown in the figure. A long hole 6 for rainwater penetration and a perforated pipe insertion hole 7 are provided in both side wall portions 3 of the water channel 2 formed by the underground permeation culvert configured as described above, and the perforated pipe insertion hole 7 is also provided in the bottom wall portion 4. A long perforated tube 8 is attached to the perforated tube insertion hole 7, and the periphery is compacted with crushed stone or the like that allows water to pass through. Long perforated tube 8
Is a long product and uses an appropriate number. Water entering the rainwater permeation long hole 6 of the water channel 2 and the long perforated pipe 8 permeates underground through the long perforated pipe 8. Therefore, a large amount of water can be treated quickly because it can be permeated over a wide area.

Next, a second embodiment of an underground infiltration method employing a culvert for underground infiltration of rainwater etc. will be described with reference to FIG. The underground infiltration method of the second embodiment is slightly different from the underground infiltration method of the first embodiment, in which a porous drainage pipe 9 is connected to the tip of a long porous pipe 8 as shown in the drawing. A lower permeation hole 10 is formed in the bottom wall portion 4 of the permeation culvert 1 to replace the long perforated pipe. Thereby, the long hole 6 for rainwater permeation of the water channel 2 and the long perforated pipe 8
Also, the water that has entered from the long porous pipe permeates underground through the porous drain pipe 9 while being stored in the porous drain pipe 9.

Next, a third embodiment of an underground infiltration method using a culvert for underground infiltration of rainwater etc. will be described with reference to FIG. In the underground infiltration method of the third embodiment, the long perforated pipe of the underground infiltration method of the second embodiment is eliminated and the rainwater permeation long hole 6 and the perforated pipe insertion hole 7 (the perforated pipe insertion hole 7 is The perforated drainage pipe 9 is buried in the direction of both side wall portions 3 of the water channel 2 provided with (not necessary) and below the bottom wall portion 4 and is compacted with crushed stone or the like. Water flowing out from the long hole 6 for rainwater permeation and the perforated pipe insertion hole 7 directly permeates into the underground, and when it does not permeate completely, it enters the perforated drain pipe 9 and temporarily permeates into the underground. . Therefore, even if a large amount of rainwater or the like flows out, the rainwater can be stored in the perforated drainage pipe 9 and the treatment can be speeded up. The long hole 6 for permeating rainwater and the perforated pipe insertion hole 7 can be provided regardless of the type, such as an open water channel, an underdrain water channel, and a lid-mounted water channel.

[0014]

As a result of adopting the above configuration, the present invention provides
The following effects can be obtained.

(1) A large amount of rainwater or the like can be quickly infiltrated underground by combining a long hole for permeating rainwater provided in a water channel, a perforated pipe, and a perforated drainage pipe.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating an underground infiltration method for rainwater and the like according to a first embodiment of the present invention.

FIG. 2 is a perspective view illustrating an underground infiltration method for rainwater and the like according to a second embodiment of the present invention.

FIG. 3 is a perspective view illustrating an underground infiltration method for rainwater and the like according to a third embodiment of the present invention.

[Explanation of symbols]

1 Culvert 2 Water channel 3 Side walls 4 Bottom wall 5 Opening 6 Rainwater permeation long hole 7 Perforated pipe insertion hole 8 Long perforated pipe 9 ... Perforated drainage pipe 10 ... Lower permeation hole

Claims (4)

[Claims] 1. A required number of long holes for rainwater permeation and a required number of perforated pipes are formed in both side walls of a water channel formed by continuously connecting box-type culverts having communication openings on front and rear surfaces. It is characterized in that an insertion hole is bored, a long perforated pipe is attached to the perforated pipe insertion hole, and rainwater and the like permeate underground through a long hole for rainwater permeation and a long perforated pipe in a wide range. Underground infiltration method for rainwater. 2. A perforated drainage pipe is connected to the tip of a long perforated pipe so that rainwater and the like can permeate underground in a wider range than the long hole for permeating rainwater, the long perforated pipe and the perforated drainage pipe. The underground penetration method for rainwater and the like according to claim 1. 3. A rainwater permeation provided in a water channel by burying perforated drainage pipes in the direction of both side walls of the water channel formed below by arranging box-type culverts each having a communication opening on the front and rear surfaces and below the bottom wall. An underground infiltration method for rainwater, etc., characterized in that rainwater, etc. flowing out from a long hole is made to permeate underground through a perforated drainage pipe. 4. A box-type culvert having communication openings on the front and rear surfaces thereof is provided with a required number of long holes for rainwater permeation on both sides, and a required number of perforated pipe insertion holes are provided. A culvert for permeating underground such as rainwater, which has a long porous pipe attached to the pipe insertion hole.