JPH0449245Y2 - - Google Patents

Description

[Detailed explanation of the invention] Industrial application field This invention is buried in the soil and collects water flowing in the soil or seeping water from all directions through a continuous straight line opening without cuts. This invention relates to an underdrain collection and drainage pipe for discharging two space chambers that fit together as a waterway.

BACKGROUND TECHNOLOGY Conventionally, bamboo culverts, sodabundi, 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 tubes are often used.

The functions required for underdrain construction are mainly water collection performance, drainage performance, 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 bamboo culverts with a straight water collection outlet on the outside, Soda bundles with large water collection areas, and Kuriishizume drains.For example, the water level adjustment in the Imperial Palace excavation is It was tied in bundles for hundreds of years in the Edo period.

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

In conventional similar pipes, only a plate-shaped protrusion is placed in the completely solid center of the S-shaped underdrain collection and drainage pipe, and the tip of the opening cannot come into contact with this protrusion even with a small amount of external pressure. Also, when a large external pressure was applied, the tip would curl in before it made contact, making it difficult to maintain its circular shape. Also, although it had some effect on the pressure applied to the space chamber from above,
There was no resistance to earth pressure from below. Furthermore, there are absolutely no measures against the intrusion of soil particles and sand.

Problems that the invention aims to solve The purpose of this invention is to apply the excellent technology from ancient times as a reference, and to create multiple C
By providing a letter-shaped protrusion, when the collection and drainage pipes are bundled and buried in the soil, a space is formed between the collection and drainage pipes to prevent clogging, improve the drainage function, and prevent the collection and drainage pipes from entering the soil. The purpose of the present invention is to provide a new underdrain collection/drainage pipe with improved pressure resistance and further improvements.

Means for solving the problem In the present invention, the underdrain collection and drainage pipe 1 is buried in the soil,
An underdrain collection/drainage pipe 1 that collects spring water in the soil or seepage water from the ground through continuous, straight-line openings 3, 3a without cuts, and drains water through two adjacent space chambers 2, 2a as waterways. Atsushi, space room 2,2
a Continuous C-shaped protrusions 4, 4 are provided on the outside to ensure good water reception and to ensure space between each pipe even when a large number of collection and drainage pipes 1 are bundled.
a, 4b, and 4c, and when the collection and drainage pipe 1 is buried in the soil, earth pressure or heavy machinery pressure is applied from all directions around the collection and drainage pipe 1, compressing and deforming the space chambers 2 and 2a. Also, soil grains and sand in the soil can easily enter through the water collection ports 3 and 3a, causing waterways 2 and 2a.
In order to prevent this, the openings 3, 3
Four continuous plate-like protrusions 5, 5 near a
This is an underdrain collection and drainage pipe characterized by providing a, 5b, and 5c.

Function: Underdrain collection and drainage pipes are buried in the soil to collect water flowing in the soil or seeping water from the ground through a continuous, unbroken straight opening, and connect two adjacent spaces as waterways. An underdrain collection and drainage pipe that drains water,
The outside of the space chamber has continuous C-shaped protrusions to ensure good water reception and to ensure space between each collection pipe even when a large number of collection and drainage pipes are bundled. When a drainage pipe is buried in the soil, earth pressure or heavy machinery pressure is applied from all directions around the pipe, compressing and deforming the space chamber, and causing soil particles and sand in the soil to easily escape from the water collection port. In order to prevent water from entering and accumulating in the interior space of the waterway and impairing its function as a waterway, multiple underdrain collection and drainage pipes with continuous plate-shaped protrusions are installed very close to the opening. When culvert collection and drainage work is carried out in parks, school grounds, and developed areas, seepage water such as rainwater, spring water, and soil particles are collected by the C-shaped protrusion of the collection and drainage pipe. Since a large number of spaces are formed between each other, the soil grains and sand are allowed to pass through.
Only water enters the water collection port, flows through the flow path, and is drained.

Further, the space within the approximately circular shape of the C-shaped protrusion serves as a channel for a small amount of water to flow, and a large amount of water enters through the water collection port provided in the S-shaped collection and drainage pipe.
Water is drained from the flow path in the inner space.

Note that the plurality of continuous plate-shaped protrusions provided very close to the water collection port prevent deformation of the water collection pipe that tends to get caught inside the underdrain collection and drainage pipe due to the heavy pressure and earth pressure of earth and sand. This is to stop the soil particles and sand from entering through the water collection mouth.

Embodiment FIG. 1 is a perspective view of an underdrain collection and drainage pipe 1.
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 when a large number of these are randomly focused as shown in Fig. 2, it is possible to collect water from each other. It is possible to collect water from all around, including the gaps where they meet, top, bottom, left and right. 2
The two inner space chambers 2, 2a are almost circular waterways, and seepage water and spring water in the ground flow in from the continuous linear water collection ports 3, 3a as described above. The shape of the water collection ports 3 and 3a is funnel-shaped and can receive water well.
4b and the water collection port 3a have a continuous C-shaped protrusion 4.
Since a and 4c are provided, the effect is further improved.

These C-shaped projections 4, 4a, 4b, 4c are
When a plurality of underdrain collection and drainage pipes 1 are bundled together as shown in Figure 2, each underdrain collection and drainage pipe 1 is butted against each other, and a space is secured inside the bundle to ensure water resistance, clogging resistance, and pressure resistance. It also plays a role in improving sexual function.

The inner cavities 2 and 2a, which serve as water channels, are completely smooth because they are the same as commercially available vinyl pipes, and when a large number of them are bundled, the spaces between them are also smooth, and they are C-shaped. The approximately circular inside of the protrusion forms a space and serves as a drainage passage, improving drainage capacity.

Next, the functions required for culvert construction are:
Generally, these items are buried in the ground, so it is almost impossible to repair, preserve, or replace them. Measures against the loss of sexuality are absolutely necessary.

The continuous plate-like protrusions 5, 5a, 5b, 5c provided in the vicinity of the water collection ports 3, 3a solve these problems, and the earth pressure (heavy machinery pressure)
When the tip 6 of the opening 3 tries to roll inward by applying to the empty space from above (from below for 2a), the protrusion of 5a causes
Moreover, earth pressure (heavy machinery pressure) is applied from below, and the arch action as a circular tube with the tip 6 supported is immediately exerted.

Exactly the same effect is achieved in the space chamber 2a with the protrusion 5.
b, 5c.

Against earth pressure (heavy machinery pressure) from the left and right directions, each tip 6, 6a is supported by the member 7 that separates the space chambers 2, 2a, and a circular tubular waterway is secured. In addition, there are many other drainage pipes around the culvert collection drainage pipe, not just this one, and the surrounding area is generally filled with filter materials such as crushed stone, gravel, rice husk, and rough sand, but buried pipes It is actually impossible to prevent surrounding soil and sand from entering the area around these underdrain pipes, and it is necessary to prevent this soil and sand from re-entering the waterway as much as possible. In the design, the protrusions 5, 5c are provided near the openings 3, 3a to block the soil grains and sand, and the fine soil grains are deposited there because the intruding water turns around (underdrain intruding water). (The flow rate is extremely low, and a slight decrease in flow rate has the effect of accumulating substances), so clogging in the water channel can be prevented.

In addition, outside the space chambers 2 and 2a of the collection and drainage pipe 1,
Since the C-shaped protrusions 4, 4a, 4b, and 4c are provided, when a large number of these collection and drainage pipes 1 are bundled, a space is secured between them, so that soil particles and sand can pass through, and the C The approximately circular inside of the letter-shaped protrusion forms a waterway, which serves as a flow path. Furthermore, even if a large number of collection and drainage pipes 1 are bundled together, the C-shaped protrusions 4, 4a,
Since the openings 4b and 4c do not cut into the openings 3 and 3a and block them, the effect of collecting and draining water is improved.

Further, the C-shaped protrusions 4, 4a of the collection and drainage pipe 1,
Since 4b and 4c have a notch in a part of their circumference, they have elasticity against external pressure, and the pressure resistance function in high embankment works is improved.

Figure 2 shows an underdrain collection and drainage pipe 1 with the above-mentioned functions.
Randomly bundle a large number of thin wires, duct tape,
This is state 8 where they are tied together with string or the like.

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

Fig. 4 shows the spaces 2 and 2a of the underdrain collection and drainage pipes 1 being laid out side by side, arranged in several stages on a concave concrete waterway 10, and then covered with glass fiber pine. The pine 11 is used to drain sludge-like industrial wastewater and industrial wastewater containing mineral sludge onto the pine 11 in an attempt to eliminate excessive drainage.

Figure 5 shows the case where a large culvert collection and 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, when a collection and drainage pipe is buried in the soil, the spatial chamber can be compressed and deformed even when earth pressure or heavy machinery pressure is applied from all directions around the collection and drainage pipe. It is possible to prevent this as much as possible, and furthermore, it is possible to prevent soil particles from entering through the collection and drainage ports, thereby preventing the waterway from being blocked.

In addition, since collection and drainage pipes have C-shaped protrusions, if they are bundled together to form an underdrain collection and drainage pipe, the overflow effect will be improved and the number of approximately small circular waterways will be increased, which will improve drainage performance. Since a part of the circumference of the C-shaped protrusion is cut out, the C-shaped protrusion is resilient and has improved pressure resistance against earth pressure.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an underdrain collection/drainage pipe 1, Fig. 2 is a diagram showing a state in which a large number of underdrain collection/drainage pipes 1 according to the present invention are stacked and bundled at random, and Fig. 3 is a diagram showing the underdrain collection/drainage pipe 1 according to the invention. Figure 4 is a sectional view of another embodiment of the underdrain collection and drainage pipe 1 in a bundled state, and Figure 5 is a diagram showing the underdrain collection and drainage pipe 1 according to the present invention. FIG. 7 is a sectional view of still another embodiment in a bundled state. 1... Culvert collection and drainage pipe, 2, 2a... Space room,
3, 3a... opening, 4, 4a, 4b, 4c...
C-shaped protrusions, 5, 5a, 5b, 5c... plate-shaped protrusions.

Claims (1)

[Scope of utility model registration request] The culvert collection/drainage pipe 1 is buried in the soil, and collects water flowing in the soil or seeping water from the ground through continuous, unbroken straight openings 3, 3a, and creates two adjacent space chambers 2. , 2a as waterways, the space chambers 2, 2a are provided with a good water catcher outside, and even when a large number of collection and drainage pipes 1 are bundled, there is no problem between each other. Continuous C-shaped projections 4, 4a, 4b, 4c to ensure space
In addition, when the collection and drainage pipe 1 is buried in the soil, earth pressure or heavy machinery pressure is applied from all directions around the entire circumference of the collection and drainage pipe 1, compressing and deforming the space chambers 2 and 2a, and causing soil damage. In order to prevent this, the openings 3 and 3a are designed to prevent dirt and sand from easily entering through the water collection ports 3 and 3a and accumulating in the interior spaces of the waterways 2 and 2a, impairing their function as waterways. An underdrain collection and drainage pipe characterized in that four continuous plate-like protrusions 5, 5a, 5b, and 5c are provided very close to each other.