JPH10299067A - Water treatment equipment making use of drain pipe bundle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promote water collecting efficiency, drainage efficiency, pressure resistance and clog resistance to maintain water conveyance function for a long period of time and to provide a water treatment equipment capable of promoting drainage capacity. SOLUTION: A drain pipe 27 is constituted of a pluralit of water intakes 37 and 39 consisting of a base section and a plurality of circumferential walls 30a and 30b having an approximately C-shaped cross section at right angles to the axis connected to the base section and extending along the axis in succession and a plurality of inside spaces 41 and 42 connected to the water intakes 37 and 39 respectively. A drain pipe bundle 10 is formed of a plurality of drain pipes 27. The drain pipe bundle 10 is so buried in the approximately vertical direction in the ground that the upper end thereof is placed downward of a position whereto treated water is led.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain pipe bundle in which a plurality of drain pipes, each of which has a water intake extending continuously and linearly along an axis, are buried in the ground, and water collected in the drain pipe bundle is provided. The present invention relates to a facility for infiltrating underground or guiding water to a predetermined position for water treatment.

[0002]

2. Description of the Related Art In lands where high valleys are buried by reclaiming valleys, so-called underground drainage pipes such as mesh pipes and effective pipes are buried in the ground before the embankment to collect groundwater seepage water. This water is led to a location lower than the site and discharged into a regulating pond or river. However, in a basin surrounded by mountains or in a terrain with similar topography, the distance to the discharge position lower than that of the local area is longer because the local area is mortar-shaped. Guided water is expensive and extremely uneconomical, and may not be drained sufficiently. In such a construction site, surrounding water collects in an area where the local area is the lowest, and it becomes impossible to smoothly drain water in the embankment. The water level in such embankments reaches close to the ground surface, and in areas with low embankments, water pools are likely to form on the embankment during rainy weather, resulting in a reduced living environment, and on flat ground such as exercise grounds and parks. The use will be hindered.

[0003] In order to solve such a problem, an underground infiltration method for directly infiltrating rainwater into the underground has been adopted. This underground infiltration method, as an infiltration trench,
Since a water collecting layer such as crushed stone is laid underground and a perforated iron pipe is buried in this water collecting layer, this pipe is compressed and destroyed by earth pressure, the opening is enlarged by corrosion, and furthermore, There is a problem that clogging is likely to occur due to the inflow of soil sand, and smooth drainage cannot be maintained for a long period of time.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to use a drain tube bundle which can maintain a smooth drainage property for a long period of time and can smoothly drain the groundwater to lower the groundwater level. It is to provide a water treatment facility.

[0005]

According to a first aspect of the present invention, a plurality of water intakes extending continuously along an axis by a base and a plurality of peripheral walls connected to the base are provided. A plurality of drain tubes in which a plurality of internal spaces communicating with each other are formed, a plurality of drain tubes are formed by bundling the drain tube bundle, and the drain tube bundle is arranged such that an upper end portion is disposed below a position where water to be treated is guided, This is a water treatment facility using a drain tube bundle, which is buried substantially vertically in the ground. According to the present invention, a plurality of drain pipes are bound to form a drain pipe bundle, and the drain pipe bundle is buried substantially vertically in the ground,
The water to be treated that has flowed in from the upper end of the drain tube bundle can be permeated and diffused into the ground for drainage treatment. Such a drain pipe bundle is obtained by binding a plurality of drain pipes, and the drain pipes come into contact with each other and have a large pressure resistance against a compressive force such as earth pressure. Moreover, since a space is also formed between the drain pipes, a plurality of flow paths extending along the axis are formed from the outer peripheral portion of the drain pipe bundle to the inside, so that clogging due to intrusion of earth and sand into the inside is difficult. Good drainage. Therefore, it is possible to maintain a good water transport function over a long period of time, improve water collection, drainage, pressure resistance, and clogging resistance, and maintain a highly reliable, long-term stable drainage function.

According to a second aspect of the present invention, a water-permeable dispersion layer is provided around the drain tube bundle.
According to the present invention, since the water-permeable dispersion layer is provided around the drain tube bundle, water flowing from the upper end of the drain tube bundle is
The water flows downward through the internal space of each drain pipe, flows out of each water intake to the outside, is dispersed and permeates into the dispersion layer, and permeates and diffuses from the dispersion layer into the ground. Such a water-permeable dispersion layer is realized by, for example, filling crushed stone around the drain tube bundle. With such a dispersion layer, the water flowing out from the intake of each drain pipe to the outside can be dispersed over a wide area and permeated into the ground, and the drainage efficiency can be improved.

According to a third aspect of the present invention, a drain pipe bundle for underground infiltration having a diameter larger than that of the drain pipe bundle is buried under the drain pipe bundle in a substantially vertical direction. According to the present invention, the drain pipe bundle for underground infiltration is provided adjacent to the lower part of the drain pipe bundle, so that the drain pipe bundle disposed above the drain pipe bundle for underground infiltration disperses in the ground or the water-permeable dispersion layer. The water not drained flows into the internal space of each drain pipe of the drain pipe bundle for underground infiltration,
It can be dispersed over a larger area than the drain tube bundle and penetrate into the ground. By providing the drain tube bundle for underground infiltration below the drain tube bundle, the drainage efficiency can be further improved.

According to a fourth aspect of the present invention, a drain pipe bundle for guiding water is buried below the drain pipe bundle at a predetermined drain gradient with respect to a horizontal plane. According to the present invention,
Since the drain pipe bundle is provided below the drain pipe bundle, the water collected by the drain pipe bundle above the drain pipe bundle is subjected to predetermined drainage equipment, sea, river, and regulating pond by the drain pipe bundle. It can be led to drainage.

[0009]

FIG. 1 is a vertical sectional view showing a part of a water treatment facility 1 using a drain tube bundle according to an embodiment of the present invention, and FIG. 2 is a water treatment viewed from above in FIG. FIG. 2 is a simplified plan view of a part of the equipment 1. A water treatment facility 1 is provided below the ground surface 2 such as an exercise ground and a park.
This water treatment facility 1 includes a plurality of gutters 3 that are open drainage works.
And a plurality of water collecting basins 4 interposed between the side grooves 3, and a plurality (each in the present embodiment, four) of diffusion structures 6a to 6 connected to the water collecting basins 4 by communication pipes 5a to 5d. 6d are provided connected to each other.

[0010] A plurality of diffusion structures 6a to 6
d. Diffusion structure 6a provided adjacent to catchment basin 4
The upper casing 7 is connected to the water collecting basin 4 by the communication pipe 5a, the lower casing 8 is disposed coaxially below the upper casing 7, and a sand layer interposed between the casings 7 and 8 with a constant thickness. 9, a drain tube bundle 10 accommodated substantially coaxially in a substantially vertical direction across the upper casing 7 and the lower casing 8, an upper filter material 11 filled in the upper casing 7, and a lower material filled in the lower casing 8. And a filter material 12. Each of the casings 7, 8 is realized by a concrete external pressure fume pipe having an effective diameter of φ600. Such a fume tube may be a non-perforated tube, or a perforated tube may be used.

A circular lid 13 made of concrete is placed on the upper casing 7 to prevent upper earth and sand from entering the upper casing 7. The upper casing 7 also has through holes 14 and 15 into which the respective communication pipes 5a and 5b are inserted on one diameter line. A through hole 16 into which the communication pipe 5 a is inserted is also formed in a side wall of the water collecting basin 4, and a connection notch 17 communicating with a water channel of the side groove 3 on both sides connected to the water collecting basin 4. Are formed facing each other. Each notch 17 is formed above the through hole 16, and the through hole 16 is formed above the bottom surface 19 of the bottom 18 of the catchment basin 4. A mud storage space 20 is formed below such a through hole 16, and mud, sand, and other solids contained in the water flowing into the water collecting basin 4 from the side groove 3 are settled. Therefore, most of the mud, sand and other solids are removed from the water guided from the water collecting basin 4 to the diffusion structure 6a via the communication pipe 5a.

A lid 21 is attached to the gutter 3 to prevent earth and sand, dust and the like from entering the catchment tub 4 from outside, and the lid 21 is removed to remove mud accumulated in the mud storage space 20. Sand and other solids can be removed.
Such a catchment basin 4 is made of concrete, and a commercially available catchment basin 4 can be easily purchased and realized commercially. The gutter 3 can also be implemented with a commercially available U-shaped gutter made of concrete, but is not limited thereto, and a circular waterway block made of concrete, an L-shaped gutter, and other street gutter products can be used.

The upper filter material 11 filled in the upper casing 7 is filled to a height substantially equal to the height of the lowermost tube bottom of the communication pipe 5a. A wire mesh 22 for removing floating substances such as leaves of the tree that have not settled and cigarette butts is mounted. The floating material such as the leaves of the tree and the cigarette butts accumulated on the wire mesh 22 can be removed by removing the lid 13. The upper end of the drain tube bundle 10 is disposed below the upper surface of the upper filter material 11 covered by the wire mesh 22. Therefore, drain tube bundle 1
The upper end of the cover 0 is covered with the upper filter material 11 to prevent foreign matter from flowing into the drain tube bundle 10.

The end face of the lower end of the drain tube bundle 10, the end face of the lower end of the lower filter material 12, and the end face of the lower end of the lower casing 8 are substantially coplanar. Accordingly, the lower ends of the lower casing 8, the drain tube bundle 10, and the lower filter material 12 are respectively supported on a local panel. The water flowing downward through the lower filter material 12 in the lower casing 8 and the water flowing downward from above in the drain tube bundle 10 permeate and diffuse into the on-site panel and are dispersed and treated as soil water. .

The positions of the lower ends of the lower casing 8, drain tube bundle 10, and lower filter material 12 are determined by groundwater and soil quality. In other words, it is preferable that each lower end reaches the sandy layer or gravel layer above the groundwater level and has a high permeability, or is partially inserted. Water can be absorbed into the ground from each lower end and drained. Also, as described above, each of the filter materials 11, 1
2 is surrounded by the casings 7 and 8 of the non-perforated pipe, so that it is possible to prevent fine soil particles from flowing into the respective filter materials 11 and 12 from clogging and to provide high water permeability for a long period of time. Can be maintained. When perforated pipes are used as the casings 7 and 8, fine soil particles flow into the vicinity of the outer peripheral portion of each of the filter materials 11 and 12 from each hole, but not only the lower end surface of the lower filter material 12 but also Water can also penetrate into the soil from the outer periphery through the holes in the upper and lower casings 7, 8, respectively.
Wastewater treatment efficiency can be improved.

Crushed stone is used for each of the filter materials 11 and 12. Further, since the sand layer 9 is interposed between the respective filter materials 11 and 12, the suspended matter in the water passing through the upper filter material 27 is prevented from being carried into the lower filter material 12, thereby. Also, it is possible to prevent clogging of the lower filter 12 and suppress a decrease in water permeability, and to guide the permeated water to the lower portion with a good drainage property for a long time to perform a drainage treatment.

FIG. 3 is a perspective view of the drain tube 27, and FIG.
FIG. 4 is a perspective view of a drain tube bundle 10 in which a plurality of drain tubes 27 are bound. The drain tube bundle 10 described above, as shown in FIG. 2, arranges a plurality of drain tubes 27 in parallel and randomly bundles them, and binds both ends and a central portion in the longitudinal direction of the bundle with synthetic resin binding tapes 28a to 28c. Is done. These binding tapes 28a to 28c have a width of 10 to 15 mm.
A certain amount of polypropylene strap can be used. Each drain pipe 27 is made of hard polyvinyl chloride, and has a binding number of 8, 22, 31, 52, 85, 120.
, The outer diameter of the drain tube bundle 10 is about 75 mm, about 100 mm, about 125 m corresponding to each number of bundles.
m, about 150 mm, about 200 mm, about 250 mm, about 3
It can be standardized to each size of 00 mm. Further, the drain tube bundle 10 having a desired diameter can be easily manufactured as required.

Each drain pipe 27 has a tensile strength of about 130 kgf / piece. The drain tube bundle 10 has a radius of curvature of 5
m. In this curved state,
Since the plurality of drain pipes 27 are bound by the above-described binding tapes 28a to 28c without being mutually restricted in the longitudinal direction, the inner cross section of each drain pipe 27 is hardly reduced.

The structure of each drain pipe 27 will be described in detail.
Each drain pipe 27 has a substantially S-shaped cross section perpendicular to the axis, and is integrally connected to a flat band-shaped base 29 and both ends in the width direction of the base 29, and has a substantially C-shaped cross section perpendicular to the axis. A plurality of two peripheral wall portions 30a, 30b;
At both ends in the width direction of the base 29 where the base end of the base b is continuous, both sides sandwiching the distal end portions 31a and 31b of the respective peripheral wall portions 30a and 30b protrude substantially perpendicularly from the front and back surfaces of the base 29 and are parallel along the axis. A pair of ridges 32a, 32
b; 33a, 33b and a pair of C-shaped external protrusions 34a, 3 which continuously protrude and extend along the axis from the outer peripheral portions of the respective peripheral wall portions 30a, 30b and whose cross section perpendicular to the axis is open outward.
4b; 35a and 35b. Each ridge 32a, 32
b; 33a, 33b, and each external ridge 34a, 34b; 3
5a and 35b are parallel to each other and are formed continuously over the entire length along the axis of the base portion 29 and the peripheral wall portions 30a and 30b.

In the drain pipe 27 having such a configuration, each of the ridges 32a and 32b and each of the ridges 32 of the base 29 are formed.
A concave water intake 37 is formed continuously along the axis between the portion 36 between the a and 32b and the tip portion 31a of the one peripheral wall portion 30a. Further, the other ridges 33a, 33
b and a portion 38 between the ridges 33a, 33b of the base 27
And the tip portion 31b of the other peripheral wall portion 30b,
A concave water intake 39 is formed.

Since the plurality of water intakes 37 and 39 are formed in the drain pipe 27 in this manner, when the drain pipe 27 is compressed by the earth pressure, the distal end portions 31a and 31b of the respective peripheral wall portions 30a and 30b are connected. Each ridge 32a, 32b; 33
a, 33b and each of the portions 36, 38, and is supported in contact therewith, and the inner spaces 41, 4 whose axis perpendicular to the axis is substantially elliptical and surrounded by the base portion 29 and the peripheral wall portions 30a, 30b.
2 is prevented from shrinking, and each intake 37,
It is possible to secure a flow path of the water flowing in from 39, and prevent a decrease in drainage.

Further, since each of the water intakes 37 and 39 is concave, clogging hardly occurs, a decrease in water collection is prevented, and clogging resistance is improved. Furthermore, each external ridge 34
a, 34b; 35a, 35b, as shown in FIG. 4, in a state where a plurality of drain pipes 27 are bound, come into contact with each drain pipe 27 to form a space between each drain pipe 27, And drainage is improved. In addition, each external ridge 3
4a, 34b; 35a, 35b are C-shaped,
The substantially circular space inside functions as a flow path, which also improves drainage.

Moreover, each ridge 32a, 32b; 33a, 3
The base 29 and the peripheral wall portions 30a, 30b are reinforced by the 3b and the outer ridges 34a, 34b; 35a, 35b, and the strength against bending, twisting, and pulling is improved. Thereby, as shown in FIG. 4, a plurality of drain pipes 27 having a length of, for example, 4 m
8a to 28c, the drain pipes 27 are attached by their own weight to the respective binding tapes 28.
There is no possibility that bending occurs between the drain pipes a to 28c and a large gap is formed between the drain pipes 27, so that earth and sand can be prevented from entering the inside of the drain pipe bundle 10. Therefore, even when the drain pipe 10 is buried in the ground, it is not deformed by the earth pressure, the shape of a substantially straight column is maintained, and each drain pipe 2
Entrapment of earth and sand and pebbles into the space 7 is prevented, and reliable drainage can be continuously achieved.

Referring again to FIGS. 1 and 2, the drain tube bundle 10 as described above takes water from the entire periphery and the upper end surface in a region A protruding above the upper surface of the sand layer 9 and from the lower surface of the sand layer 9. The water can be drained to the outside in the lower region B. In this way, the water taken from the water intake area A can be smoothly guided to the lower drainage area B, penetrated into the lower filter material 12, and dispersed into the soil from the lower end face to be drained. In the present embodiment, the axial length of the water intake area A of the drain pipe 27 is selected to be 150 mm, and the axial length of the drainage area B is selected to be 1780 mm. The lengths of the drain pipes 27 in the water intake area A and the drainage area B are appropriately selected according to the amount of drainage and the surrounding soil.

By using the drain tube bundle 10 in this manner, the permeation capacity is insufficient with the sand layer 9 alone.
Even if the inside of the drain tube bundle 10 becomes full, the permeated water in 1a is guided downward, and even if the inside of the drain tube bundle 10 becomes full, it is discharged to the outside from each of the water intakes 37 and 39 in the drainage area B, and the lower filter material 1
2 to disperse and permeate into the voids, and disperse into the soil from the lower end surface of the lower filter material 12 as well as the lower end surface of the drain tube bundle 10 to infiltrate and drain and promote the diffusion of water into the soil. Can be.

The water not permeated by the diffusion structure 6a is guided to the next diffusion structure 6b through the communication pipe 5b to be subjected to permeation treatment, and further excess water passes through the communication pipe 5c to the next. The excess water is guided to the diffusion structure 6c, and the excess water is further guided to the final diffusion structure 6d via the communication pipe 5d and subjected to permeation treatment. Thus, the plurality of diffusion structures 6a to 6d
Thus, the wastewater treatment is performed in multiple stages, and the water treatment facility 1 having a large water treatment capacity can be realized.

As described above, in the present embodiment, the base 29
And a plurality of water intakes 37, 39 extending continuously along the axis by a plurality of peripheral walls 30a, 30b connected to the base 29 and having a substantially C-shaped cross section perpendicular to the axis.
A plurality of drain pipes 27 in which a plurality of internal spaces 41 and 42 are formed, respectively, are connected to form a drain pipe bundle 10, and the drain pipe bundle 10 is moved to an upper end portion below a position where water to be treated is guided. Is disposed, and the water to be treated that has flowed in from the upper end of the drain pipe bundle 10 permeates and diffuses into the ground by the water treatment equipment 1 using the drain pipe bundle buried in the ground substantially vertically. Can be processed. The drain tube bundle 10 is formed by binding a plurality of drain tubes 27, and the drain tubes 27 come into contact with each other and have a large pressure resistance against a compressive force such as an earth pressure. In addition, since a space is also formed between the drain pipes 27, a plurality of flow paths extending along the axis are formed in the drain pipe bundle 10, and clogging hardly occurs due to earth and sand entering the inside,
Good drainage. Therefore, the water transport function can be maintained for a long time, and the water collection, drainage, pressure resistance, and clogging resistance can be improved, and a stable water treatment function can be maintained with high reliability for a long time.

In the above embodiment, the drain tube bundle 1
Around the upper filter material 11 as a water-permeable dispersion layer.
And the lower filter material 12, the water flowing from the upper end of the drain pipe bundle 10 flows downward through the internal spaces 41 and 42 of the drain pipes 27, and the water 3
7, 39 to the outside to be dispersed and permeate into each of the filter materials 11 and 12, and from the filter materials 11 and 12, a large area can be dispersed into the ground and permeated into the ground. Is improved.

FIG. 5 is a plan view showing a water treatment facility 1a according to another embodiment of the present invention, and FIG. 6 is a sectional view taken along a line V-V in FIG.
It is sectional drawing seen from I-VI. A valley 48 is formed between the mountains 46 and 47, and the valley 48 is embanked to
And as shown in FIG. 6 by hatching.
Is formed. In the lowland part 50 connected to the valley 48, water gathers and flows along the valley 48 from each of the mountains 46 and 47, and therefore, a water treatment facility 1a is provided on the local board of the lowland part 50. The field board of the lowland portion 50 is dug vertically by an auger, and a plurality of drain tube bundles 10a having the same configuration as the drain tube bundle 10 shown in FIG. 4 are buried in a substantially vertical direction at intervals. The upper part of each drain tube bundle 10a is covered with a filter material 51 made of crushed stone, and the filter material 51 collects permeated water in the soil and sand buried in the lowland part 50, and penetrates into the ground by the drain tube bundle 10a. Can be drained.

The land 49 in which the mountainous area has been reclaimed in this way
In the above, by providing the water treatment facility 1a prior to embankment, it is possible to prevent occurrence of water pools, ground subsidence, and generation of spring water on the ground surface of the land for development 49, and to realize land development with a favorable living environment. it can.

As another embodiment of the present invention, the above-mentioned water treatment equipment 1 shown in FIGS. 1 and 2 may be provided also on the embankment of the above-mentioned construction site 49.

FIG. 7 is a plan view showing a water treatment facility 1b according to still another embodiment of the present invention, and FIG. 8 is an enlarged cross-sectional view of the water treatment facility 1b taken along section line VIII-VIII in FIG. It is. The water treatment equipment 1b according to the present embodiment is implemented on a flat ground such as an exercise ground such as a school and a stadium, or a park. Main line 5 in the center of drainage area 56
A plurality of branch lines 58 are buried at right angles on both sides of the main line 57 at equal intervals in the longitudinal direction. These main lines 57 and each branch line 58
The drain pipe bundle 10 shown in FIG. 4 configured by binding a plurality of drain pipes 17 shown in FIG. 3 is used. Each branch line 58
Has a drainage gradient downward toward the main line 57, and a plurality of underground infiltration drain tube bundles 59 buried in the ground in a substantially vertical direction are equally spaced below the main line 57 in the longitudinal direction of the main line 57. It is provided with an opening. One end of each branch line 58 in the axial direction facing each other is separated from the branch line 57 by a gap in the axial direction.
On the main line 5
The water dropped on the main line 8 and captured by the main line 57 is guided to the upper end of each drain tube bundle 59. The main line 57, each branch line 58, and the drain tube bundle 59 for underground infiltration are buried in the permeable dispersion layers 52 and 53 realized by crushed stone.

Each underground seepage drain pipe bundle 59 is
A drain pipe bundle having a diameter larger than that of the drain pipe bundle used for each branch line 58 and having, for example, a diameter of 300 mm and a bundle of 120 drain pipes 27 is used. The drain tube bundle used for the branch line 58 has a smaller diameter than the drain tube bundle of the main line 57. For example, a drain tube bundle having a diameter of 100 mm in which 13 drain tubes 27 are bound is used. The drain tube bundle used for the main line 57 is, for example, 31 drain tubes 2
7 is used as a drain tube bundle having a diameter of 150 mm.

The water treatment facility 1b having such a structure can also disperse and disperse the infiltrated water due to rainfall in and around the drainage area 56 to perform drainage treatment.

In the other embodiment shown in FIGS. 7 and 8 described above, a drain pipe bundle 59 for underground infiltration having a diameter larger than that of the drain pipe bundle is disposed substantially vertically below the drain pipe bundle. Buried. As described above, the drain pipe bundle 59 for underground infiltration is provided adjacent to the lower part of the drain pipe bundle, and the drain pipe bundle 59 disposed above the drain pipe bundle for underground infiltration is dispersed in the ground or in the water-permeable dispersion layer. The unused water flows into the internal space of each drain pipe of the drain pipe bundle for underground infiltration, and can be dispersed into a larger area than the drain pipe bundle and permeated into the ground. Thus, the drain pipe bundle 5 for underground infiltration is located below the branch drain pipe bundle 58.
By providing 9, the drainage efficiency can be further improved.

FIG. 9 is a sectional view showing a water treatment facility 1c according to still another embodiment of the present invention, and FIG. 10 is an enlarged sectional view of the water treatment facility 1c taken along the line XX of FIG. It is. The water treatment facility 1c according to the present embodiment is implemented as a sand farming work. In this water treatment facility 1c, a plurality of permeable layers 61 made of crushed stones extending from the land to the sea are buried in the sand, and a plurality of drain pipes 27 shown in FIG. A drain pipe bundle 62 for water conveyance having a drainage gradient that is buried in parallel in two in the vertical direction and that is inclined downward toward the sea is provided.

On the drain pipe bundle 62 for water conveyance, an abnormally high water level DH is provided at intervals in the horizontal direction which is the horizontal direction in FIG.
A plurality of vertical drain tube bundles 63 are provided from WL to the average water level MSL. Each vertical drain tube bundle 63 also has
It has the same configuration as the drain tube bundle 10 shown in FIG. The upper end of each drain tube bundle 63 has a filter layer 64 made of crushed stone.
This prevents sand from flowing into the drain pipes 27 constituting the vertical drain pipe bundle 63 and causing clogging.

With the water treatment facility 1c thus configured, when the breaking wave 65 goes up on the coast and returns to the sea side,
Since the seawater is absorbed from the sand layer surface 66 by the vertical drain tube bundle 63 and the water guide drain tube bundle 62, the time during which the sand particles are present in the water is shortened, and the sand particles floating in the seawater are reduced in a short time. And reduce sand removal by the waves. This prevents the beach from being eroded by the waves, and the eroded beach can be restored by the sand nourishing effect.

9 and 10, the drainage pipe bundle is buried under the drain pipe bundle at a predetermined drain gradient with respect to the horizontal plane, so that the drainage pipe bundle is The water collected by the drain pipe bundle above the drain pipe bundle can be guided to a predetermined drainage facility, the sea, a river, a regulating pond, and the like by a drain pipe bundle for guiding water to be drained.

FIG. 11 is a sectional view showing a water treatment facility 1d according to still another embodiment of the present invention. The water treatment equipment 1d according to the present embodiment is similar to the water treatment equipment 1 shown in FIG. 1, and corresponding parts are denoted by the same reference numerals. In the water treatment facility 1d of the present embodiment, a drain tube bundle 71 having a diameter substantially larger than that of each drain tube bundle 10 is provided substantially coaxially below each of the diffusion structures 6a to 6d. Such a drain tube bundle 71 is also configured by bundling a plurality of drain tubes 27 shown in FIG.

The drain tube bundle 71 can further improve the ability of seepage and drainage into the soil as compared with the embodiment shown in FIG. In addition, since the drain tube bundle 71 is buried deep in the soil, excavation of 20 to 30 m is possible with an auger, and the drain tube bundle 71 is inserted into a drilled hole drilled by the auger. By providing such a drain tube bundle 71, the underground infiltration capacity can be remarkably improved, and a large amount of water is prevented from being discharged in a short time due to the storage capacity thereof, and the flooding of the river in the downstream water system is performed. And flooding can be prevented.

In another embodiment as described above, a drain tube bundle for underground infiltration having a diameter larger than the drain tube bundle is buried below the drain tube bundle in a substantially vertical direction. Since the drain pipe bundle for underground infiltration is provided adjacent to the lower part of the drain pipe bundle in this manner, the drain pipe bundle arranged above the drain pipe bundle for underground infiltration is not dispersed in the ground or in the water-permeable dispersion layer. The water flows into the internal space of each drain pipe of the drain pipe bundle for underground infiltration, and can be dispersed into a larger area than the drain pipe bundle and permeated into the ground. By providing the drain tube bundle for underground infiltration below the drain tube bundle, the drainage efficiency can be further improved.

FIG. 12 is a perspective view of a drain pipe 27a according to still another embodiment of the present invention, and FIG. 13 is a perspective view showing a drain pipe bundle 10a obtained by binding a plurality of drain pipes 27a. In the drain pipe 27a of the present embodiment, three continuous and continuous water intakes 72a, 72b, 72 along the axis are provided.
c and internal spaces 78a, 78b, 78c are formed. The drain pipe 27a has a peripheral wall portion 73a, 73b, 73c having a substantially C-shaped cross section perpendicular to the axis extending in the circumferential direction, and a Y-shaped base portion 74 in which the base ends of the peripheral wall portions 73a to 73c are continuous.
And near each of the water intakes 72a to 72c,
Tip portions 75a, 75b, 7 of the respective peripheral wall portions 73a to 73c
Each pair of ridges 76 that are continuous in the axial direction outside of 5c
a1, 76a2; 76b1, 76b2; 76c1, 76
c2, and are formed integrally with each of the peripheral wall portions 73a to 73c,
A C-shaped external ridge 77 that projects outward and opens outward
a, 77b, 77c.

A plurality of such drain tubes 10a are randomly bound by the same binding tapes 28a to 28c as described above to form a drain tube bundle 71. Such a drain tube bundle 71 has a so-called trilobal cross section perpendicular to the axis,
The drain tube 27 and the drain tube bundle 10 shown in FIGS.
And the same effect as the drain tube bundle 10 can be achieved.

FIG. 14 is a perspective view of a drain pipe 27b according to still another embodiment of the present invention, and FIG. 15 is a perspective view showing a drain pipe bundle 10b obtained by binding a plurality of drain pipes 27b. The drain pipe 27b of the present embodiment has a straight cylindrical base in which a plurality of (six in the present embodiment) peripheral walls 81a to 81f and base ends of the respective peripheral walls 81a to 81f are integrally connected in the circumferential direction. 82 and a distal end portion 83 of the adjacent peripheral wall portions 81a to 81f provided at the base end portion of each of the peripheral wall portions 81a to 81f.
a-83f, a plurality of ridges 84a-84f projecting toward
And

A plurality of such drain pipes 27b are bound by the binding tapes 28a to 28c to form a drain pipe bundle 10b as shown in FIG. The drain pipe 27b has a large strength because the base 82 has a circular pipe shape, that is, a straight cylindrical shape.
In addition, since the plurality of peripheral walls 81a to 81f form the internal spaces 85a to 85f that form a plurality of flow paths, water flowing in all directions from the outer periphery is supplied to the internal spaces 85a to 85f.
5f, and has high water collecting capacity.

The drain tube 27b and the drain tube bundle 10b can also achieve the same effects as those of the drain tube 27, 27a and the drain tube bundle 10, 10a. The drain tube bundle 10b may be used in each of the embodiments shown in FIGS. 1 to 11 instead of the drain tube bundles 10 and 10a.

As still another embodiment of the present invention, a bamboo bundle or a soda bundle may be used instead of the drain tube bundles 10, 10a, 10b. In addition, when this bamboo bundle is used, clogging is likely to occur as compared with the drain tube bundles 10, 10a, and 10b made of the above synthetic resin.
Also, since the material is bamboo, it is easy to crack or damage,
In addition to shortening the durability, it is possible to treat underground infiltration water with good drainage performance.

Further, the present invention can be suitably applied not only to a sports ground, a park, and a construction site, but also to water treatment in tunnels and tunnels.

[0050]

According to the first aspect of the present invention, a plurality of drain pipes are bound to form a drain pipe bundle, and the drain pipe bundle is buried substantially vertically in the ground to form an upper end portion of the drain pipe bundle. The water to be treated, which has flowed in from underwater, can be permeated and diffused into the ground for drainage treatment. Such a drain pipe bundle is obtained by binding a plurality of drain pipes, and the drain pipes come into contact with each other and have a large pressure resistance against a compressive force such as earth pressure. Moreover, since a space is formed between each drain pipe,
A plurality of flow paths extending along the axis are formed from the outer periphery of the drain tube bundle to the inner side. Therefore, it is possible to maintain a good water transport function over a long period of time, improve water collection, drainage, pressure resistance, and clogging resistance, and maintain a highly reliable, long-term stable drainage function.

According to the second aspect of the present invention, since the water permeable dispersion layer is provided around the drain tube bundle, water flowing from the upper end of the drain tube bundle flows downward through the internal space of each drain tube. The water flows down, flows out of each water intake to the outside, is dispersed and penetrates into the dispersion layer, and penetrates and diffuses into the ground from the dispersion layer. Such a water-permeable dispersion layer is realized by, for example, filling crushed stone around the drain tube bundle. With such a dispersion layer, the water flowing out from the intake of each drain pipe to the outside can be dispersed over a wide area and permeated into the ground, and the drainage efficiency can be improved.

According to the third aspect of the present invention, the drain pipe bundle for underground infiltration is provided adjacent to the lower part of the drain pipe bundle, and the ground pipe is disposed above the drain pipe bundle for underground infiltration. Water that is not dispersed in the middle or water-permeable dispersion layer flows into the internal space of each drain pipe of the drain pipe bundle for underground infiltration, and can be dispersed into a larger area than the drain pipe bundle and permeated into the ground. . By providing the drain tube bundle for underground infiltration below the drain tube bundle, the drainage efficiency can be further improved.

According to the fourth aspect of the present invention, since the drain pipe bundle is provided below the drain pipe bundle, the water collected by the drain pipe bundle above the drain pipe bundle is supplied to the water pipe. The drain pipe bundle can be guided to a predetermined drainage facility, the sea, a river, a regulating pond, and the like for drainage.

[Brief description of the drawings]

FIG. 1 is a partial vertical cross-sectional view showing a water treatment facility 1 using a drain tube bundle according to an embodiment of the present invention.

FIG. 2 is a simplified plan view of a part of the water treatment facility 1 as viewed from above in FIG.

FIG. 3 is a perspective view of a drain pipe 27.

FIG. 4 is a drain tube bundle 10 in which a plurality of drain tubes 27 are bound.
It is a perspective view of.

FIG. 5 is a plan view showing a water treatment facility 1a according to another embodiment of the present invention.

FIG. 6 is a sectional view taken along section line VI-VI in FIG. 5;

FIG. 7 shows a water treatment facility 1 according to still another embodiment of the present invention.
It is a top view showing b.

FIG. 8 is an enlarged cross-sectional view of the water treatment facility 1b taken along the line VIII-VIII of FIG.

FIG. 9 shows a water treatment facility 1 according to still another embodiment of the present invention.
It is sectional drawing which shows c.

FIG. 10 is a view showing a water treatment facility 1 viewed from a section line XX in FIG. 9;
It is an expanded sectional view of c.

FIG. 11 is a vertical sectional view showing a water treatment facility 1d according to still another embodiment of the present invention.

FIG. 12 shows a drain pipe 2 according to still another embodiment of the present invention.
It is a perspective view of 7a.

FIG. 13 is a perspective view showing a drain tube bundle 10a in which a plurality of drain tubes 27a are bound.

FIG. 14 shows a drain pipe 2 according to still another embodiment of the present invention.
It is a perspective view which shows 7b.

FIG. 15 is a perspective view showing a drain tube bundle 10b in which a plurality of drain tubes 27b are bound.

[Explanation of symbols]

1, 1a, 1b, 1c, 1d Water treatment equipment 4 Water collecting tub 5a, 5b, 5c, 5d Communication pipe 6a, 6b, 6c, 6d Diffusion structure 7 Upper casing 8 Lower casing 9 Sand layer 10, 10a, 10b Drain tube bundle 11 Upper filter material 12 Lower filter material 27, 27a, 27b Drain pipe 29, 74, 82 Base 30a, 30b; 73a to 73c; 81a to 81f Peripheral wall 37, 39; 72a to 72c, 86a to 86f Intake 41, 42 Internal space 59 Drain tube bundle for underground infiltration 62 Drain tube bundle for water conveyance 63 Vertical drain tube bundle

Claims (4)

[Claims] 1. A plurality of water intakes extending continuously along an axis by a base and a plurality of peripheral walls connected to the base,
A plurality of drain pipes each forming a plurality of internal spaces communicating with the respective water intakes are bound together to form a drain pipe bundle, and the drain pipe bundle is disposed at an upper end below a position where water to be treated is guided. A water treatment facility using a drain tube bundle, which is buried substantially vertically in the ground as described above. 2. A water treatment facility using a drain tube bundle according to claim 1, wherein a water permeable dispersion layer is provided around the drain tube bundle. 3. The drain tube bundle according to claim 1, wherein a drain tube bundle for underground infiltration having a diameter larger than that of the drain tube bundle is buried adjacently in a substantially vertical direction below the drain tube bundle. Water treatment equipment using. 4. A water treatment facility using a drain pipe bundle according to claim 1, wherein a drain pipe bundle for guiding water is buried below the drain pipe bundle at a predetermined drain gradient with respect to a horizontal plane.