JPH0248503Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field The invention is a system that is buried in the soil and collects water flowing in the soil or seeping water from all directions through openings on a continuous straight line without cuts, and creates two adjacent spatial chambers. This invention relates to an underdrain collection and drainage pipe that discharges water as a waterway.

BACKGROUND TECHNOLOGY Traditionally, bamboo culverts, soda bundles, chestnut stone culverts, various synthetic resin culvert pipes, and concrete culverts have been used for culvert drainage works in parks, school grounds, developed areas, and other landslide prevention works caused by groundwater. Hole pipes have been widely used.

The functions required for underdrain construction are mainly water collection, drainage, pressure resistance, and clogging resistance, but the top priority is to collect water within the pipe, and it is necessary to do this in a good manner. This applies to things from the past, such as the Takezume culvert, which has a water collection outlet with a straight line around the outside, the Sodatsume, which has a large water collection area, and the Kuriishizume.For example, the water level adjustment in the Imperial Palace moat was done in Edo. It had been tied up in a bundle for a hundred years.

However, in recent years, these materials tend to be in short supply and are difficult to obtain due to the lack of labor, so various types of plastic and concrete materials are being used instead.

Purpose The purpose of this invention is to provide a new underdrain collection and drainage pipe that has been further improved by applying excellent technology from ancient times as a reference.

Structure of the invention In the present invention, two adjacent space chambers 2, 2a of a gutter body with an S-shaped cross section are used as water channels, the openings of the S-shape are used as water collection ports 3, 3a, and the outer surfaces of the space chambers 2, 2a are In an underdrain collection and drainage pipe with plate-like protrusions 4, 4a, 4b, and 4c on the left and right, the plate-like protrusions 5, 5a, 5b, and 5c are connected to the gutter body so that the ends 6 and 6a of the S-shaped body are sandwiched in the middle, respectively. This is an underdrain collection and drainage pipe characterized by being arranged symmetrically above and below the central wall 7 of the pipe.

Example Details will be explained using figures.

FIG. 1 is an overall view of the underdrain collection and drainage pipe 1.
The underdrain collection and drainage pipe 1 is a gutter body with an S-shaped cross section and has two adjacent chambers 2 and 2a, and the S-shaped openings form water collection ports 3 and 3a. If this is used alone as shown in Fig. 1, it is possible to collect water from the upper water collection port 3 and the lower water collection port 3a, and if a large number of these are randomly focused as shown in Fig. 2, they touch each other. It is possible to collect water from all around, including the gaps, top, bottom, left and right. The two space chambers 2 and 2a are nearly circular waterways, and the seepage water in the ground and spring water flow in from the continuous linear water collection ports 3 and 3a mentioned above. 3,
The water collection port 3a has a funnel shape and can receive water well, and for the water collection port 3, 4, 4b,
Since the water collection port 3a is equipped with continuous plate-shaped protrusions 4a and 4c, the effect is further increased.
I will do it.

When multiple pieces are bundled together as shown in Figure 2, these plate-shaped protrusions abut against each other's underdrain collection and drainage pipes to ensure space inside the bundle, making them water resistant, clogging resistant, and pressure resistant. It also plays a role in enhancing sexual function.

The space chambers 2 and 2a that serve as waterways are the same as commercially available vinyl pipes, so they are completely smooth and smooth, and when a large number of pipes are bundled, the spaces between them are also smooth, so drainage is extremely good. .

Next, the functions required for culvert construction are:
Generally, these items are buried underground, so it is almost impossible to repair, preserve, or replace them, and as a result, they may be destroyed or become clogged with soil particles, sand, etc. Measures against the loss of permanence are absolutely necessary.

The plate-shaped continuous protrusions 5, 5a, 5b, 5c provided very close to the water collection ports 3, 3a solve these problems.
Place the tips 6 and 6a of the S-shape in between
It is arranged symmetrically in the vertical direction in the figure, and earth pressure (heavy equipment pressure) is applied to the empty chamber 2 from above (from below for 2a) at the tip 6 of the opening 3.
When the tube tries to roll inward, the tip 6 is supported by the protrusion 5a, and the arch action as a circular tube is immediately exerted.

In the space chamber 2a, the same effect is achieved by the projections 5b and 5c.

In response to earth pressure (heavy machinery pressure) from the left and right directions, the tips 6, 6a of the S-shaped body are the bases 7 of the plate-like protrusions 5, 5c.
a, 7b and prevent deformation of the space chambers 2, 2a. In addition, the area around culvert drainage pipes, not only this one but many other drainage pipes, is generally filled with filter material such as crushed stone, gravel, rice husks, and rough sand, but the soil around the buried pipes is It is actually impossible to prevent granular sand from entering the area around these underdrain pipes, and it is necessary to prevent this granular sand from re-entering the waterway as much as possible.
As a countermeasure to this problem, in this invention, protrusions of 5, 5c are provided near the openings 3, 3a to block the soil particles and sand, and fine soil particles and sand are deposited there because the intruding water turns and flows. (The flow rate of water entering the underdrain is extremely small, and a slight decrease in the flow rate has the effect of accumulating the contained substances.) Therefore, clogging in the waterway can be prevented.

In the conventional technology (Japanese Patent Application Laid-Open No. 56-105013), 5a and 5b
The chisel is placed in the solid center of the S-shape, and even with a small amount of external pressure, the tip cannot come into contact with these 5a and 5b, and when a large amount of external pressure is applied, the tip 6 gets wrapped up by the time they make contact, resulting in a circular shape. It was difficult to maintain this. In addition, although there was some effect on the pressure from above on the empty chamber 2, there was no resistance at all to the earth pressure from the left and right directions. Furthermore, there are absolutely no measures against the intrusion of soil particles and sand.

FIG. 2 shows a state 8 in which a large number of underdrain drain pipes 1 having the above-mentioned functions are randomly bundled and bound appropriately with thin wire, duct tape, string, or the like.

Although FIG. 3 shows a system in which bundled underdrain pipes are placed in the soil and filled with gravel 9, it is also possible to use the underdrain pipe 1 alone.

FIG. 4 shows the spaces 2 and 2a of the culvert drainage pipe 1 being laid out side by side, arranged in several stages on a concrete channel 10 constructed in a concave shape, and then a glass fiber mat 11 is placed on top of it. This is a pine-like structure in which industrial wastewater containing sludge and mineral sludge is poured into 11 mats.
It is intended to filter wastewater.

Figure 5 shows the case where a large culvert drainage pipe 1 and multiple small culvert pipes are used at the same time, which provides an economical effect by ensuring a larger internal space when the amount of drainage is large. , multiple small ones are arranged to increase the area of the water collection port and to subdivide the area in order to collect water from above and below and prevent clogging.

Effects As described above, according to the present invention, the plate-like protrusions 5, 5a and 5b, 5c are arranged symmetrically above and below the central wall 7 of the gutter body, so that the tips 6, 6a of the S-shaped body are sandwiched between them. Because of this arrangement, when external pressure is applied from above and below, the tips 6 and 6a are securely abutted against the plate-shaped protrusions 5a and 5b, respectively, and the space chambers 2 and 2a are closed.
deformation can be prevented. Furthermore, when external pressure is applied from the left and right directions, the tips 6, 6a are
5c to prevent deformation of the space chambers 2, 2a. Furthermore, the plate-shaped protrusions 5, 5c prevent the soil particles and sand around the pipe from entering the space chambers 2, 2a, thereby preventing the water channel from being blocked.

[Brief explanation of the drawing]

Fig. 1 is an overall view of the underdrain collection/drainage pipe 1, Fig. 2 is a diagram showing a state in which a large number of underdrain drainage pipes 1 according to the present invention are stacked and bundled at random, and Fig. 3 is a diagram showing the underdrain drainage pipe 1 according to the present invention. Figure 4 is a sectional view of another embodiment of the bundled underdrain pipes 1, and Figure 5 is the bundled underdrain pipes 1 according to the present invention. FIG. 3 is a cross-sectional view of an embodiment of the plate in further condition; 1... Culvert collection and drainage pipe, 2, 2a... Space room,
3, 3a... Water collection port, 4, 4a, 4b, 4c,
5, 5a, 5b, 5c... plate-like protrusion, 6, 6a
...The tip of the S font, 7...The center wall.

Claims (1)

[Scope of utility model registration request] Two adjacent space chambers 2, 2 with a gutter body having an S-shaped cross section
a is the waterway, and the S-shaped opening is the water collection port 3, 3a.
In the underdrain collection and drainage pipe, plate-shaped protrusions 4, 4a, 4b, and 4c are provided on the left and right sides of the outer surfaces of the space chambers 2 and 2a, and plate-shaped protrusions are placed between the tips 6 and 6a of the S-shaped body, respectively. Body 5, 5a and 5b, 5c
An underdrain collection and drainage pipe characterized in that these are arranged symmetrically above and below the central wall 7 of the gutter body.