JP3435145B2 - Wastewater treatment material for culvert drainage - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to seepage water in an embankment,
The present invention relates to a drainage treatment material for underdrain drainage used for treatment of spring water on the backside of a sidewall in a tunnel and drainage on the backside of a concrete retaining wall.

[0002]

2. Description of the Related Art Generally, in civil engineering work, drainage treatment is applied to prevent the embankment and retaining wall from collapsing due to rainwater or the like. For example, in a high embankment, a horizontal U-shaped groove orthogonal to the inclination direction is provided at a predetermined height position on the inclined surface,
Further, in the soil, a water collecting and distributing treatment material whose tip faces the U-shaped groove is buried. The collecting and wastewater treatment material is formed by forming a mat in a ballast with a water-permeable sand mat, and when rain falls, the rainwater that has penetrated into the soil is introduced into the ballast through the sand mat. It drains to the U-shaped groove through.

[0003]

However, in the case of a large amount of rainfall, rainwater flows through the internal ballast of the above-mentioned wastewater treatment material, but the gravel of the ballast is complicated and complicated. , There is a lot of resistance when water flows between them and the drainage capacity is not sufficient. Therefore, if the drainage capacity is not sufficient, there is a problem that a large amount of surplus water accumulates in the soil, possibly causing a landslide and damaging structures such as buildings. Therefore, the present invention has been made to solve the above problems, and an object thereof is to provide a drainage treatment material for underdrain drainage that is strong in strength and has good water permeability and excellent drainage capacity. .

[0004]

In order to achieve such an object, the present invention provides a large number of monofilaments randomly .
A vertically elongated hard synthetic tree formed by stacking in a loop
A collected wastewater treatment material made of fat, wherein the collected wastewater treatment material is
Cut the thick part to match the pressure resistance of the wastewater treatment material.
In the longitudinal direction by the monofilament whose surface diameter is set
The cylindrical cavities that are installed in multiple rows along the
Monofilament whose cross-sectional diameter is set to match the compressive strength
It is formed by the Lamento
It consists of a covering layer part that covers in a crushed state with a loop shape,
By passing the collected water mainly through each cylindrical cavity.
It has a structure that allows smooth drainage. As a result, the water to be collected mainly passes through each tubular cavity, but there is almost no obstacle to the flow of water in each tubular cavity, which allows smooth drainage. Become so.

[0005] The cross-sectional diameter of the thick monofilaments or a thin monofilament is set to match the pressure resistance of each current wastewater treatment material. In this case, in particular, the thick monofilament forming the cylindrical hollow portion has a substantially circular shape, that is, the central axis of the cylindrical hollow portion is perpendicular to the external pressure, so that the strength of the substantially circular portion is strong. It becomes a simple structure.

Also, a large number of monofilaments are
Vertically long plate-shaped hard alloy formed by depositing in a loop shape
A collected wastewater treatment material made of synthetic resin, wherein the collected wastewater treatment material is
Make sure that the thickness part matches the pressure resistance of the wastewater treatment
Longitudinal direction due to monofilament whose cross-sectional diameter is set to
A tube that is installed in multiple rows along the direction and that is stacked in multiple stages
To match the pressure-resistant strength of the wastewater treatment material
Formed by a monofilament whose cross-sectional diameter is set
Both sides of the cylindrical hollow part that is stacked in multiple stages are looped
It consists of a coating layer that covers the crushed state as it is, and collects water.
Drainage is achieved mainly by passing the water that flows through each tubular cavity.
A structure that allows smooth operation is adopted.

Further, a large number of monofilaments are
Vertical cylindrical hard joint formed by depositing in a loop shape
A collected wastewater treatment material made of synthetic resin, wherein the collected wastewater treatment material is
Make sure that the thickness part matches the pressure resistance of the wastewater treatment
Longitudinal direction by mono filament cross-sectional diameter is set to
A plurality of cylindrical cavities arranged along the same direction, and a wastewater treatment material
The cross-sectional diameter is set to match the pressure resistance of
Cylindrical hollow part formed by filaments and arranged in plural
Layer that covers the outer peripheral surface of the
, And mainly collects the collected water in each cylindrical cavity.
By adopting a configuration that allows smooth drainage by passing through
It The collection and drainage treatment materials are made of hard synthetic resin and are integrated
As it is molded, it can be handled easily during transportation and construction.
It's easy.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a drainage treatment material for underdrain drainage (hereinafter, simply referred to as a drainage treatment material) according to the present invention will be described below. 1 and 2 show a waste water treatment material A1 according to the first embodiment, FIG. 1 is a perspective view of the waste water treatment material A1, and FIG. 2 is a sectional view of the same. A hard synthetic resin, for example, a polypropylene resin is used as the collected wastewater treatment material A1, and a large number of monofilaments 1 are accumulated in a random loop shape to form a vertically long flat plate shape. Then, a predetermined width (for example, 20 cm) and a predetermined thickness (for example, 3 c)
m) has a predetermined length (for example, 400 cm), and in this case, a plurality of cylindrical hollow portions 3 are formed in the thickness portion 2 along the longitudinal direction.
Are lined up.

[0009] Next, a description will be given molding method of the current wastewater treatment material A1. FIG. 3 shows the manufacturing apparatus, and in FIG.
Is a spinning machine for spinning a molten monofilament. A plurality of large diameter nozzles 5a having large diameter nozzle holes and a plurality of small diameter nozzles 5b having small diameter nozzle holes
And a small-diameter nozzle 5b is disposed on both sides of the large-diameter nozzle 5a so as to be separated from each other by a predetermined distance.
It is provided in such a position that it is arranged in rows. A water storage tank 6 filled with water is arranged below the spinning machine 4, and a pair of receiving rolls 7 and 7 are arranged in the water storage tank 6 at positions corresponding to the large diameter nozzle 5a and the small diameter nozzle 5b. . Denoted at 8a and 8b are transfer conveyors disposed inside and outside the water storage tank 6, respectively.

[0010] Therefore, KakuFutoshi径nozzle 5a of the spinning machine 4
And the large-diameter / small-diameter monofilaments 1a and 1b spun from the respective small-diameter nozzles 5b are dropped into the stored water P below. At this time, each of the large-diameter / small-diameter monofilaments 1a and 1b dropped into the water P is spirally wound so as to have a substantially planar circular shape having substantially the same size as that of nature. The sizes of these circular portions are the diameter of the large diameter nozzle 5a or the small diameter nozzle 5b, the large diameter nozzle 5a and the small diameter nozzle 5 respectively.
Distance from b to water surface, large / small diameter monofilament 1
It is determined by the temperatures of a and 1b. Then, the cylindrical hollow portion 3 is formed by the large diameter monofilament 1a, and this is passed between the pair of receiving rolls 7, 7 together with the small diameter monofilament 1b. The interval between the pair of receiving rolls 7, 7 is set to a predetermined thickness, that is, a dimension such that the substantially circular shape formed by the large-diameter monofilament 1a is not crushed. Therefore, the small-diameter monofilaments 1b are accumulated in a crushed state in a loop shape on both side surfaces of the plurality of cylindrical cavities 3 arranged in a row to form the coating layer section 9. Then, after passing between the pair of receiving rolls 7, 7, it is discharged to the transport conveyors 8a, 8b and cut at a predetermined size (for example, 400 cm), so that the collected wastewater treatment material A1 according to the first embodiment is obtained. It is formed.

The cylindrical hollow portion 3 formed by the large-diameter monofilament 1a has almost no obstacle along its longitudinal direction, and the gap formed between the large-diameter monofilaments 1a is relatively wide. On the other hand, the coating layer portion 9 is
Since it is formed of the small diameter monofilament 1b, the radius of the substantially circular portion is smaller than that of the large diameter monofilament 1a, and moreover, it overlaps in multiple layers along the longitudinal direction, so that a gap formed between the small diameter monofilaments 1b. Is relatively narrow. The thickness portion 2 has a structure that is excellent in water permeability and allows water to easily flow in. In this case, in particular, the thick monofilament 1a forming the cylindrical hollow portion 3 has a substantially circular shape, that is, the central axis of the cylindrical hollow portion 3 is straight with respect to external pressure.
It means the exchange, the strength to robust construction by a number of substantially circular section. In addition, in the first embodiment,
Although the material for collecting and treating wastewater A1 is formed in a vertically long shape, it may be formed into a wide rectangle or a square, and further, the tubular cavity portion 3 may be formed in a direction orthogonal to the longitudinal direction.

[0012] Figure 4, Figure 5 shows another current wastewater treatment member A2, said population waste water treatment material A2 also the same rigid synthetic resin such as polypropylene resin is used, the same as the first embodiment A number of monofilaments 1
Are deposited in a random circular shape to form a vertically long flat plate. The collected wastewater treatment material A2 has a predetermined width (for example, 20
cm), a predetermined thickness (for example, 1 cm), and a predetermined length (for example, 400 cm). In this case, the thick monofilament 1a is formed in the thickness portion 2 along the longitudinal direction thereof according to the first embodiment. A plurality of cylindrical cavities 3 a smaller than the cylindrical cavities 3 are arranged in a row. Further, the covering layer portion 9 formed of the monofilament 1b having a small diameter is provided in each of the cylindrical hollow portions 3 arranged in a plurality of rows.
Only one side of a is covered. Then, the collected water is mainly passed through each of the cylindrical hollow portions 3a. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

[0013] Figure 6, Figure 7 shows the current waste water treatment material A3 according to the second embodiment, said population waste water treatment material A3 also the same rigid synthetic resin such as polypropylene resin is used, the first A large number of monofilaments 1 are randomly deposited in a substantially circular shape by the same method as in the embodiment to form a vertically long flat plate. The collected wastewater treatment material A3 has a predetermined width (for example, 20 cm) and a predetermined thickness (for example, 5 c).
m) has a predetermined length (for example, 400 cm), and in this case, a plurality of cylindrical hollow portions 3 are arranged in a row in the thick portion 2 along the longitudinal direction by a large-diameter monofilament 1a and in two stages. Are overlaid. In this case, the stages of the plurality of cylindrical hollow portions 3 are provided at different positions, and may be three stages or four stages as required. The coating layer portion 9 formed of the small-diameter monofilament 1b is provided so as to cover both front and back side surfaces of the cylindrical hollow portion 3 that is stacked in two stages. Then, the collected water is mainly passed through each of the cylindrical hollow portions 3. In this case as well, the same parts as those in the first embodiment are denoted by the same reference numerals and detailed description thereof will be omitted.

FIG . 8 shows a collected wastewater treatment material A4 according to the third embodiment . The collected wastewater treatment material A4 is made of a hard synthetic resin, for example, polypropylene resin, as in the above.
A large number of monofilaments 1 are randomly deposited in a substantially circular shape by the same method as in the first embodiment. However, in this case, the collected wastewater treatment material A4 is formed in a cylindrical shape in which the thickness portion 2 has a donut shape. Therefore, a plurality of cylindrical hollow portions 3 are arranged in the thickness portion 2 with a large diameter monofilament 1a in a circular contour along the longitudinal direction. Further, the coating layer portion 9 made of the thin monofilament 1b is formed so as to surround and cover the outer peripheral surface thereof. Then, the collected water is mainly passed through each of the cylindrical hollow portions 3 or the central hollow portion B. In this case as well, the same parts as those in the first embodiment are denoted by the same reference numerals and detailed description thereof will be omitted.

The collected wastewater treatment materials A1 to A4 according to the present invention have the above-mentioned constitutions. Among them, the collected wastewater treatment material A1 according to the first embodiment will be described first. This shows the case where it is used to drain the seepage water in the embankment. FIG. 9 is a cross-sectional view of the land M for embankment at a landfill site, and FIG. 10 is a front view thereof. In the land M, one side surface of the embankment is an inclined surface S, and U-shaped grooves H that are orthogonal to the inclination direction, that is, horizontal U-shaped grooves H are arranged at predetermined height positions. Then, in the soil N, corresponding to each U-shaped groove H, a predetermined interval is provided as shown in FIG. The material A1 is buried. At this time, the gap between the waste water treatment material A1 is 0.6 mm.
It is covered with the mesh filter 10 of.

[0016] Therefore, even if you fell a large amount of rain, 11
As shown in (3), the rainwater soaked in the soil N is collected in the thickness part 2 of the wastewater treatment material A1 through the mesh filter 10 and flows into the U-shaped groove H. At this time, since the tubular hollow portion 3 is provided along the flow direction in the thick portion 2 of the collected and discharged water treatment material A1, rainwater mainly flows through the tubular hollow portion 3, Resistance to running water is reduced and drainage can be performed smoothly. Even when groundwater springs out, the groundwater flows through the tubular hollow portion 3 as described above. As a result, sufficient drainage capacity is secured, excess water does not accumulate in the soil, and the risk of landslides is almost eliminated. Further, since the collected wastewater treatment material A1 is made of a hard synthetic resin, it is provided with high elasticity and strength and is also excellent in durability, and the cylindrical hollow portion 3 is crushed and the intended purpose cannot be achieved. Nothing. In addition, the mesh filter 10 rarely causes sand or pebbles to enter the thick portion 2,
The inside of the thick portion 2 will not be clogged.

Next, a description based on the use of other collecting waste water treatment material A2 in FIGS. 12 to 16. This shows the case where it is used to drain the spring water on the back of the side wall in the tunnel. FIG. 12 is a rear perspective view of a spring treatment sheet material using the collected wastewater treatment material A2, and FIG. 13 is a plan sectional view of the same. The spring water treatment sheet material 11 is made of polypropylene resin or polyethylene resin, is impermeable to water, and has a strip shape (usually 10 to 12).
m), the cover layer 9 is formed on one surface side of the sheet body 12
Are not contacted with each other, that is, the coating layer portion 9 faces inward, and the wastewater treatment material A2 is arranged and fixed. The strip-shaped pieces 13 made of the same material as the sheet main body 12 are arranged along the both side edges along the longitudinal direction of the water collecting and wastewater treating material A2 so as to straddle the both side edge portions of the water collecting and wastewater treating material A2 and the sheet body 12. Place and hot melt bond to each other. As a result, the seat body 12 is formed so that both end portions are along the longitudinal direction.
And the waste water treatment material A2 is attached. In this case, the tubular hollow portion 3a is formed along the longitudinal direction of the spring treatment sheet material 11. For the seat body 12, a non-water-permeable material is selected when spring water is assumed, and a water-permeable material such as nonwoven fabric may be selected when spring water is not assumed.

The polypropylene resin is used as the sheet body 12 because the polypropylene resin is stable for a long time with respect to alkalinity, concrete and mortar and has no polarity and does not adhere free lime. Further, the spring water treatment sheet material 11 may be attached by adding one having a predetermined length, and in some cases, may be specially formed into a desired size or a desired curved shape.

[0019] Then, both side end 1 of the seat body 12
The holding cylinder portion 16 is provided along the longitudinal direction of the sheet body 12 by folding back 2a and 12a with a predetermined width to one side surface and integrally attaching 15 the folded back edge to the sheet body 12. Then, a mounting belt 17 made of a soft elastic material is inserted into each holding cylinder portion 16. The mounting belt 17
Is fixed to the holding cylinder portion 16 by a stapler 18. The attachment belt 17 has substantially the same length as the seat body 12,
A soft elastic material such as a synthetic resin material or rubber, a synthetic rubber material, into which concrete nails, which will be described later, can be placed, is strongly crimped to the surface of the primary lining concrete wall W1, and is not easily broken, and the seat body 12 is not easily broken. Anything that can expand

Next, a description will be given of a method using the spring water processing sheet material 11. FIG. 14 is a perspective view showing a state in which the spring water treatment sheet material 11 is mounted on the inner wall surface of the tunnel. After the primary lining concrete W1 is sprayed on the inner wall surface, a large number of lock bolts 19 are laid in multiple layers along the circumferential direction on the primary lining concrete wall W1 to form the primary lining concrete. A square plate 20 having a rectangular shape is fitted to a base end portion 19a of the lock bolt 19 protruding from the wall W1 and a nut 21 is screwed. Then, the nut 21 is screwed and the square plate 20 is pressed against the surface of the primary lining concrete wall W1.

Next, a state where the spring water processing sheet material 11 as shown in FIG. 15, corresponding to each locking bolt 19, which is many layers pouring along the circumferential direction of the tunnel covering the base end portion 19a Then, a plurality of concrete nails 23 are sequentially driven into the temporarily lining concrete wall surface W1 via the mounting belt 17 on one side. In this way, the mounting belt 17 is provided in advance, and it is sufficient to simply drive the concrete nails 23 along the mounting belt 17 in order, so the work is simple. Moreover, since the mounting belt 17 is inserted into the holding cylinder portion 16, it can be conveniently handled as one body with the seat body 12. Further, even when the concrete nail 23 is driven in, it does not bounce and the driving is easy and safe.

[0022] In addition, the seat body 12 on both sides is mounted belt 1
Since it is pressed by 7, the looseness on both sides of the seat body 12 is prevented, and the reliability in construction is improved. In addition, if the length is usually the inner circumferential surface of the tunnel and is set to, for example, 10 or 12 m as a half of the circumferential length, the spring water treatment sheet material 11 is attached to the both sides from the central top end,
Installation work is possible even by one person. In this way, FIG.
As shown in, the spring treatment sheet material 11 is attached to the primary lining concrete wall surface W1. It should be noted that a white transverse tape 24 (referred to as a measuring line) and a number 25 are attached and displayed on the attached spring water treatment sheet material 11 at intervals of 100 cm. This is to make it possible to easily confirm at a glance how long the spring water treatment sheet material 11 has been used for construction.

[0023] Thus, current drain passage T is formed by the primary lining concrete wall W1 and the seat body 12 collecting waste water treatment material is interposed between A. As a result, when the secondary lining concrete W2 is sprayed on the entire surface of the primary lining concrete wall surface W1 via the waterproof sheet E as shown by the chain line in FIG. It will be drained through the drainage passage T. Moreover, at this time, since the tubular hollow portion 3a is provided in the thick portion 2 of the water collecting and treating material A2, the collected spring water mainly flows through the tubular hollow portion 3a. , Drainage is done smoothly. As a result, sufficient drainage capacity is secured, and even if a large amount of spring water is generated, the drainage function will not be impaired. In addition, the collected wastewater treatment material A2 is also useful for preventing damage to the sheet body 1 and the water blocking sheet E due to its elastic action.

In the other waste water collecting and treating material A2 , the mounting belts 17 are integrally provided on both sides of the seat body 12, but this is the case where the spring water treating sheet material 11 is mounted in the vertical direction. When the sheet main body 12 is mounted in the lateral direction, that is, in the horizontal direction, the sheet main body 12 is formed into a tubular shape, and the waste water collecting and treating material A2 is arranged and fixed inside the sheet main body 12 along the longitudinal direction. The mounting belt 17 may be provided only on one side (upper side).

Although not shown in the drawings, the collected / drainage treatment material A3 according to the second embodiment is for treating the seepage water in the embankment or the spring water on the side wall rear surface in the tunnel, particularly the spring water treatment sheet material 11. It is used by being attached to a spring water treatment sheet material provided so as to communicate with the lower end of each of the spring water treatment sheet materials 11 in order to discharge the spring water collected by the above to the outside of the tunnel. Further, the collected wastewater treatment material A according to the third embodiment
No. 4 is embedded, for example, in a soil of a land where a mesh filter is wound, and is used for draining spring water in the soil.

In the present invention, the first to third drainage treatment plants
We have explained the treatment of seepage water in the embankment, spring water on the back of the side wall in the tunnel, and spring water in the landscaping using the materials A1, A3, A4 and other wastewater treatment materials A2. It is attached to the drainage on the back of the wall, the drainage of the soil of the planted vegetation soil, etc., and is appropriately selected and used according to the drainage of the installation location and the amount of spring water.

[0027]

As described above, the wastewater treatment material according to the present invention is a wastewater treatment material made of a hard synthetic resin formed by depositing a large number of monofilaments in a random loop shape, Since a plurality of cylindrical cavities are arranged in a row in the thick portion of the material for collecting and treating wastewater, the collected water mainly passes through the respective cylindrical cavities, whereby drainage can be smoothly performed and sufficient This has the effect of ensuring drainage capacity. And, for example, there is no fear of landslides at the embankment of the land, and there is no accident that the spring water on the back side of the sidewall in the tunnel overflows and the secondary lining concrete peels off.

[Brief description of drawings]

FIG. 1 is a perspective view of a waste water treatment material A1 according to a first embodiment.

FIG. 2 is a cross-sectional view of the same.

FIG. 3 is a schematic view of the manufacturing apparatus.

FIG. 4 is a perspective view of another material for collecting and treating waste water A2.

FIG. 5 is a transverse sectional view of the same.

FIG. 6 is a perspective view of a waste water treatment material A3 according to a second embodiment .

FIG. 7 is a cross-sectional view of the same.

FIG. 8 is a cross-sectional view of a wastewater treatment material A4 according to a third embodiment .

FIG. 9 is a cross-sectional view of the embankment of the land reclamation area.

FIG. 10 is a front view of the same.

FIG. 11 is a cross-sectional view of the wastewater treatment material A1 in the same soil.

FIG. 12 is a rear perspective view of the spring water treatment sheet material.

FIG. 13 is a sectional view of the same plane.

FIG. 14 is a perspective view showing a state where the spring treatment sheet material is attached to the inner wall surface of the tunnel.

FIG. 15 is a cross-sectional view showing a state where the spring treatment sheet material is attached to the inner wall surface of the tunnel.

FIG. 16 is a perspective view showing an inner wall surface of the tunnel with a spring treatment sheet material attached thereto.

[Explanation of symbols]

1 monofilament 1a Large diameter monofilament 1b Thin monofilament 2 Thickness part 3,3a Cylindrical cavity 9 Cover layer part A1-A4 collecting wastewater treatment material

─────────────────────────────────────────────────── --- Continued from the front page (56) References JP-A-3-180611 (JP, A) JP-A-54-22931 (JP, A) JP-A-8-74161 (JP, A) JP-B-62- 3263 (JP, B2) Actual public Sho 62-20500 (JP, Y1) Utility model registration 2594317 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02B 11/00 E02D 3/00 102 D04H 3/14-3/16

Claims (3)

(57) [Claims] 1. A large number of monofilaments are randomly arranged.
A vertically elongated hard synthetic tree formed by stacking in a loop
A collected wastewater treatment material made of fat, wherein the collected wastewater treatment material is
Cut the thick part to match the pressure resistance of the wastewater treatment material.
In the longitudinal direction by the monofilament whose surface diameter is set
The cylindrical cavities that are installed in multiple rows along the
Monofilament whose cross-sectional diameter is set to match the compressive strength
It is formed by the Lamento
It consists of a covering layer part that covers in a crushed state with a loop shape,
By passing the collected water mainly through each cylindrical cavity.
The drainage treatment material for underdrain drainage is characterized by smooth drainage. 2. A large number of monofilaments are randomly arranged.
A vertically elongated hard synthetic tree formed by stacking in a loop
A collected wastewater treatment material made of fat, wherein the collected wastewater treatment material is
Cut the thick part to match the pressure resistance of the wastewater treatment material.
In the longitudinal direction by the monofilament whose surface diameter is set
Cylindrical empty space that is installed in multiple rows along this line and is stacked in multiple stages
Cross section to match the pressure strength of the drainage and wastewater treatment material
Multi-stage formed by monofilament whose diameter is set
Both sides of the cylindrical hollow part that is stacked on
Water that consists of a coating layer that covers in a crushed state and is collected
The drainage is smooth by mainly passing through the inside of each cylindrical cavity.
A drainage treatment material for underdrain drainage, characterized in that it can be carried out. 3. A large number of monofilaments are randomly arranged.
Vertically long cylindrical hard synthetic tree formed by stacking in a loop
A collected wastewater treatment material made of fat, wherein the collected wastewater treatment material is
Cut the thick part to match the pressure resistance of the wastewater treatment material.
In the longitudinal direction by the monofilament whose surface diameter is set
A plurality of cylindrical cavities are installed along the
Monofilament whose cross-sectional diameter is set to match the compressive strength
Outside the cylindrical hollow part formed by Lamento
A coating layer that covers the peripheral surface in a looped state in a crushed state,
Water, and the collected water is mainly passed through each cylindrical cavity.
The drainage treatment material for underdrain drainage is characterized by enabling smooth drainage.