JPH018616Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a gutter with a seepage basin that can retain a large amount of rainwater and allow it to permeate, especially over a long period of time.
This relates to a side gutter with a seepage gutter that allows rainwater to infiltrate without becoming clogged.

[Conventional technology]

In recent years, most of the roads in residential areas as well as general roads have been paved, so that in rainy weather, rainwater cannot penetrate into the ground. Therefore, as shown in Fig. 4, conventional road 2
A gutter 1 for rainwater is provided in the area, and rainwater flows into the gutter 1. The rainwater flowing into the side gutter 1 is designed to be temporarily retained in the mud catchment basin 1 and then discharged into the public sewer 3 from there. For this reason, for example, when there is a torrential downpour such as a shower, the rainwater flows into low-lying areas of the city all at once, causing flooding, and in a short period of time, the water cannot drain easily, making it difficult for residents to live. They are often damaged. In addition, local governments treat wastewater from sewers to make it clean and return it to the natural world to prevent pollution, but as mentioned above, rainwater flows into the sewers and mixes with the sewage. The amount of wastewater to be treated has become enormous, and the cost of sewage treatment for local governments has increased, putting pressure on local governments' finances. Therefore, recently, local governments have been planning and implementing various rainwater treatment methods in order to reduce the costs. For example, in the first method, large equipment is installed to allow rainwater to permeate underground, or in the second method, a permeable concrete basin 4 is installed below the water collection basin, as shown in Figure 5. A third method is to install a side gutter with a hole in the side wall or/and bottom or a side gutter made of permeable concrete, and allow a portion of the drainage to seep through the hole or the permeable concrete part. It is.

[Problem that the invention attempts to solve]

However, the first method as described above requires a huge amount of cost and is not economically preferable. In addition, in the second method, it is not possible to arrange water collection basins at short intervals along the road, so not only is it difficult to allow a large amount of rainwater to infiltrate, but both rainwater and sewage are As it flows into the basin, it also passes through the walls of the permeable concrete basin, so there is paper mixed in there, worn debris from vinyl tires, mud, and fallen leaves. Water-permeable concrete pits become clogged in a short period of time (for example, within about 6 months) due to various types of debris such as garbage being washed away by rainwater and mixed into drainage water. The disadvantage is that the penetration of water is significantly reduced.
Furthermore, with the third method, although it is possible to extend the number of days until blindness occurs slightly more than the former method,
After construction, the percolating water weakens the road base and causes the road to sink.As a result, not only does the gutter itself sink, but it also destroys the road pavement.

[Means for solving problems]

In order to solve the above-mentioned drawbacks, the present applicant devised this product as a result of intensive research. To provide a gutter with a seepage gutter that allows rainwater to permeate into the ground for a long time without clogging.

That is, in the present invention, at least one
A side ditch with a seepage basin, which is provided with a seepage basin which may form a separation tank by providing two partition walls, and a filtration device having a drainage hole at the entrance of the seepage basin at a position remote from the bottom position of the side ditch. It is.

The seepage pit is provided at the bottom of the gutter, and the bottom of the seepage pit is used to infiltrate wastewater into the ground.
Make sure there is no bottom. The inside of the permeation basin is filled with at least one bag containing small gravel after a sand layer is provided as a lower layer, and a synthetic fiber filter, such as a nylon filter, is provided on top of the bag. In addition, if the permeation basin is divided by a partition wall to form a separation tank, the partition wall is formed lower than the bottom of the gutter, so that when the amount of drainage increases, the wastewater that entered the first separation tank will be transferred to the next tank. It is designed to overflow and flow into the separation tank.

When two or more separation tanks are formed, three layers of filter media are installed in the first separation tank.
A nylon filter is installed on the top layer to remove oil contained in the wastewater, and a synthetic fiber net bag, such as a Tetron net for fishing nets, is installed on the middle layer to filter out mud. A bag filled with small gravel is placed, and a sand layer is placed at the bottom layer.
This sand layer has the role of preventing minute particles of mud and mud from the roadbed from flowing back into the separation layer. In addition, after the second separation tank, the inside is filled with small gravel in the upper tank.
It consists of two tanks, the lower tank being filled with sand.

Rainwater flows into the first separation tank, passes through a nylon filter layer, passes through a gravel layer and a sand layer, and permeates into the underground layer. When the amount of rainwater is large, it overflows the first separation tank and flows into the second separation tank and beyond, passing through each filter tank and penetrating into the underground layer, and directly flowing into the gutter above the second separation tank. Rainwater flows in through the drainage holes. Also, water-permeable concrete may be used for the partition walls that constitute the separation tank.

Appropriate shapes can be used for the infiltration basin, but
A rectangular shape is usually preferred. Furthermore, the capacity of the permeation basin can be set to a desired size, and can be larger than the width of the side gutter.

The shape and size of the gravel may be any shape as long as it forms a space where rainwater can be retained in the seepage basin, and the size may be large enough to act as a filter. It is fine as long as it is something.

The filtration device is provided at the entrance of the permeation basin and along the side gutter, and its shape has a substantially U-shape in which the gap between the wall of the side gutter and the wall of the filtration device becomes larger toward the bottom. In addition, a drainage hole is provided in the side wall at a position away from the bottom of the side wall and at a position higher than the amount of sewage flowing in normal times. Furthermore, when a first separation tank and a second separation tank are provided, the position of the drainage hole provided in the side wall of the filtration device in the upper part of the second separation tank is the same as the position of the drainage hole provided in the upper part of the first separation tank. It is provided above the position of. As a result, when a large amount of rainwater passes through the side gutter, the rainwater flows directly into the second separation tank from the drain hole in the upper part of the second separation tank.

Both ends of the filtration device are sealed with a filler (sealing agent) so that when the amount of drainage in the side gutter increases, wastewater is discharged only from the drainage hole. Thereby, the waste water passes through the drain hole, passes through the gap between the side gutter and the filter wall, and flows into the seepage basin.

The shape of the gutter may be any commonly used shape, such as a circle or a U-shape. In addition, the penetration basin is
A type that is formed integrally with the side gutter is used, but if the side gutter and separation tank are designed to be deep,
The gutter and the infiltration basin may be manufactured separately, and the two may be connected using a connecting tool such as a metal fitting immediately before installation.

[Example of idea]

The present invention will be further explained in detail with reference to FIGS. 1 to 3, but this is one embodiment of the present invention and is not limited thereto.

First, Figure 1 shows the second side of the gutter with permeation basin of the present invention.
FIG. 9 is a groove with a penetration hole;
91 is a side gutter portion, 92 is an infiltration basin portion, and 93 is a partition wall, thereby forming a separation tank A or a separation tank B. In the separation tank A, a sand layer 7, a Tetron net bag 6 containing small gravel, and a nylon filter 5 are laid in order, and the top layer nylon filter 5 is for attaching oil in the waste water. In addition, mud is removed using the gravel contained in the Tetron mesh bag in the middle layer. Furthermore, the sand layer 7 prevents minute particles of mud and mud from the roadbed from flowing back.

The second separation tank B is sequentially provided with a sand tank 7 and a Tetron net bag 6 containing small gravel. Infiltration basin 9
A filtration device 13 having a drainage hole 14 is provided at the inlet of
is sealed at both ends with medium mortar 12. A slip-preventing metal fitting 15 is provided on the outside bottom of the filtration device to prevent slippage from external pressure.

A large number of drainage holes 14 are provided on the side wall of the filtration device 13, and the drainage holes 14 are provided in stages at the upper part of the first separation tank A and the second separation tank B.
The drainage hole on the second separation tank B occupies a higher position than the drainage hole on the first separation tank A. As a result, rainwater directly flows into the second separation tank B only when the amount of rainwater reaches the position of the drainage hole on the second separation tank B.

Drainage water such as rainwater that has passed through the drainage hole 14 of the filtration device 13 flows into the seepage basin through a gap formed between the wall of the side gutter and the side wall of the filtration device, as shown in FIG.

An example of construction of a side gutter with a seepage basin according to the present invention will be described. As shown in Fig. 3, the road edge is excavated, and the incised crushed stone 10 is left in advance, leaving a place where the seepage pit will be placed.
After laying and compacting, a pedestal 11 was laid at the joint between the side gutter 8 and the side gutter 9 with a seepage basin of the present invention. Next, the area where the seepage pit is placed is excavated to the depth of the seepage pit, and a side ditch 9 with a seepage pit having the first separation tank A and the second separation tank B is laid. Next, after performing the usual backfilling work with soil, the gutter work is completed by laying cut crushed stone and forming and paving the roadbed. First separation tank A and second separation tank B in the seepage basin of the side gutter 9 with seepage basin
First, spread sand at the bottom to a thickness of about 10 cm. Next, in the first separation tank A, Tetron mesh bags containing small gravel are packed to a height of about 30 cm, and two nylon filters with a thickness of about 5 cm are fitted on top of the bags. In the second separation tank B, Tetron mesh bags containing small gravel are packed to the height of the separation tank B. In this way, after forming a predetermined filter layer in each separation layer, the filtration device 13 having the fittings 15 is inserted into the permeation basin and covered, and the gap between both ends of the filtration device 13 is is filled with cement mortar 12.
As described above, the gutter with seepage pit is installed, but the installation interval of the gutter with seepage pit can be adjusted according to the amount of drainage due to the difference in area. Although the gutter is installed every other gutter, the gutter may be installed every other gutter or more. In addition, if the side gutter and separation are designed to be deep, the side gutter portion 91 and the seepage basin portion 9
2 can also be manufactured separately, in this case,
Just before installation, each is connected using a connecting fitting (for example, bolted) 18.

Further, the gutter cover above the filter device 13 provided in the permeation basin may be configured to have a handle so that it can be easily removed so that maintenance after installation can be easily performed.

[Action and effect]

Normally, sewage discharged from each household or facility is constantly flowing through the gutter with seepage basin of the present invention, which has been installed as described above. This sewage is concentrated with sediments such as mud, oil, and filth that easily cause clogging.When it rains and the amount of rainwater is relatively small, the sewage mixed with rainwater and distributed is filtered. It does not reach the drain hole 14 of the device 13, but flows in its lower part, passes through the side gutter and enters the public sewer system. Therefore, since wastewater containing such precipitates does not flow into each separation tank, the filter layer does not become clogged and can be used for a long period of time (approximately 2 to 3 years). Can be done. If the filter becomes clogged after a long period of time, the filter can be reused by removing the filter, taking out the vinyl filter and the Tetron mesh bag containing small gravel, and washing them with water. This results in
Not only is it possible to maintain and manage the permeation basin in a short time, but the cost is also low.

As the amount of rainfall increases, most of the sewage rainwater flowing through the side gutters becomes rainwater by the time it reaches the drainage hole 14 of the filter device 13. Therefore, this rainwater falls from the drainage hole into the first separation tank A, penetrates underground through each filter layer, and when the rainwater exceeds the infiltration rate, it is stored in the first separation tank A. At the same time, the rainwater that overflows the separation tank flows into the second separation tank B. Furthermore, when the amount of rainwater flowing through the gutters increases, the filtration device 13
Rainwater falls from a drainage hole provided at the top of the tank and flows directly into the second separation tank B.

In addition, since rainwater is retained in each separation tank even after rainfall, a large amount of rainwater can be reliably infiltrated even if the infiltration time to the ground is slow. During infiltration, rainwater passes through each filter layer. Since the water penetrates into the layers below the roadbed, the roads and gutters themselves do not sink. Moreover, most of the rainwater is stored and infiltrated in each separation tank, which not only prevents flooding caused by torrential rain, but also
Since the amount of rainwater that flows into public sewers is smaller than that of conventional systems, the cost burden on local governments for sewage treatment can be reduced, which is an unprecedented and remarkable effect. It is something to play.

In addition, since the gutter with seepage pit of the present invention allows the seepage pit to be installed at the same time as the gutter is laid, it is possible to significantly shorten the construction period and, therefore, to reduce the construction cost, which is an unprecedented and unprecedented feature. It has a great effect.

[Brief explanation of drawings]

Figures 1 and 2 show a gutter with a seepage gutter of the present invention, and Fig. 1 shows a-a of the gutter with a seepage gutter of the present invention.
FIG. 2 is a longitudinal sectional view (end and center) of the side gutter taken along line a', and FIG. 3 is an example of construction of the gutter with permeation basin of the present invention. FIG. 4 shows a conventional mud catchment basin, and FIG. 5 is an enlarged sectional view of the mud catchment basin shown in FIG. 4. 1...Mud catchment basin, 2...Paved road, 3...
Public sewer, 4... Permeable concrete, 5...
Filter, 6...Gravel filter, 7...Sand layer, 8...Gutter, 9...Gutter with seepage pit, 91...
Side gutter part, 92... seepage basin part, 93... partition wall, 10... partition crushed stone, 11... pedestal, 12...
Cement mortar, 13...filtration device, 14...
Drain hole, 15... Slip prevention hardware, 16... Roadbed,
17...Paved road.

Claims (1)

[Scope of utility model registration request] At the bottom of the side gutter, an infiltration basin, which may be provided with at least one partition wall to form a separation tank, is integrally or separably provided, and drainage is provided at the entrance of the external infiltration basin at a position remote from the bottom position of the side gutter. A side gutter with a seepage basin equipped with a filtration device having holes.