JPH086818Y2 - Underdrain drainage pipe - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention collects spring water in the soil or permeated water from the outer periphery from a continuous straight line-shaped opening to bury it in the soil, and three adjacent spaces It relates to an underdrain collection drainage pipe for discharging a room as a waterway.

[0002]

2. Description of the Related Art Conventionally, bamboo culverts, sod bundles, crushed stone pipes, and various synthetic resin culvert pipes have been used for culvert drainage works in parks, school grounds, reclaimed land, etc. And concrete perforated pipes are often used.

The functions required for the underdrain are mainly water collection, drainage, pressure resistance and clogging resistance, but the highest priority is to collect water in the pipe. This is good for bamboo culverts, which have a straight water collection port on the outer circumference, sod bundles with a large catchment area, and crushed stone clogs, and for example, the water level adjustment of the Imperial Palace moat. Was used by Sodatsuka for hundreds of years in Edo.

However, these materials tend to be scarce in recent years and are difficult to obtain due to lack of labor. Therefore, various plastics and concretes are used instead.

The inventor of the present invention has previously proposed, as a plastic underdrain collection and drainage pipe, Japanese Utility Model Publication No. 2-48503.
This underdrain drainage pipe has only two space chambers of the same shape on the left and right, and when used alone, it has only one upper and one lower opening that connects to the two space chambers, and infiltrates from any direction. Incoming springs and groundwater are not sufficiently captured, and there are only two space chambers. In the long run, the probability of survival of the drainage canal due to clogging over time is poor, and it can be used in all directions. Even with respect to earth pressure, there are problems that the degree of dispersion of earth pressure is low and the pressure resistance effect is not sufficiently exerted because the number of water channels is small. Further, when a large number of particles are randomly bundled and used, there is a problem that the plate-shaped projections provided on the outer plate are inserted into the water collecting port to be blocked.

[0006]

[Problems to be solved by the invention]
By applying the excellent technology of the character type underdrain collection drainage pipe, the underdrain drainage pipe having three space chambers of the same type in three-leaf shape and the opening and the plate-shaped projections in the vicinity of the opening is constructed. When they are collected and buried in the soil, the underdrain drainage pipes do not block the water collection ports mutually and form a space between them to improve the clogging resistance and improve the drainage function. The purpose of the present invention is to provide a new underdrain drainage pipe with improved pressure resistance in soil and further improved.

[0007]

[Means for Solving the Problems] The present invention is a culvert drainage pipe which is buried in soil to collect spring water in the soil or permeated water from the ground, and is provided on the axis of the culvert drainage pipe. The openings 3, 3a, 3b, which are continuous and have no cuts, are partitioned by the partition plate 7 extending in the circumferential direction.
Three space chambers 2, 2 whose outer shape is formed in a three-leaf shape by outer plates 6, 6a, 6b connecting the 3b and the partition plate 7.
a, 2b and at least three continuous plate-like projections 5, 5a, 5b provided on the outer sides of the outer plates 6, 6a, 6b in the vicinity of the openings 3, 3a, 3b, respectively. This is a drainage pipe for underdrain which is characterized by including three continuous C-shaped projections 4, 4a, 4b provided toward the outside at substantially central portions of the outer plates 6, 6a, 6b.

[0008]

According to the present invention, the spring is buried in the soil, and the spring water in the soil or the seepage water from the ground is collected from the opening along the continuous uncut pipe axis, and the three adjacent ones are collected. It is an underdrain collection drainage pipe that drains the space room as a waterway. There is a three-leaf-shaped outer plate outside the space chamber, and a continuous C-shaped projection is provided outside the substantially central portion of the outer plate, so even when a large number of underdrain collection drainage pipes are bundled. , A space can be secured between each other without blocking the openings. Further, when the focused collecting and draining pipe is buried in the soil, earth pressure or heavy machine pressure is applied from the entire outer peripheral direction of the focusing and collecting drainage pipe, and the space chamber is not compressed and deformed. Further, in order to prevent soil particles in the soil from easily entering through the openings and accumulating in the space chamber and impairing the function as a water channel, at least a continuous plate-shaped projection is provided near each opening. One is provided and the water inlet is bent. In addition, when multiple underdrain drainage pipes are bundled to perform drainage drainage work in parks, school grounds, and land development sites, seepage water such as rainwater, spring water, and sand and sand are focused into the drainage pipes. Only water, which is filtered by a large number of spaces generated between each other, enters the space chamber through the opening, flows through the space chamber, and is drained.

[0009]

At least one provided near each opening
The individual plate-shaped continuous protrusions prevent the deformation of the space chamber that is trying to get caught inside the underdrain drainage pipe due to earth pressure such as earth and sand and heavy machine pressure, and the soil particles that try to get in through the opening. It is for stopping the sand.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an underdrain collection drainage pipe 1 according to an embodiment of the present invention.
It is a perspective view of. The main drainage pipe 1 may be used alone as shown in FIG. 4, or a large number may be randomly bundled as shown in FIG. 2 and used as shown in FIG. In any case, water is collected from the openings 3, 3a, 3b along the pipe axis and drained through the space chambers 2, 2a, 2b. Openings 3, 3a,
The shape of 3b is funnel-shaped and is good for receiving water, and the space chambers 2, 2a, 2b are drainage paths that are nearly circular.

When a large number of water collecting and draining pipes are randomly focused, water is collected from the entire circumference of the upper, lower, left and right sides including the gaps in contact with each other. Since the C-shaped projections 4, 4a, 4b provided on the outside of the substantially central portion of the outer plates 6, 6b, 6c are bent plate-shaped unlike the plate-shaped projections described in the prior art,
It does not fit into the opening of the adjacent underdrain drainage pipe to close it. Further, when a large number of underdrain drainage pipes are focused, the C-shaped projections 4, 4a, 4c abut each other's underdrain drainage pipes so that spaces other than the space chambers 2, 2a, 2b are formed inside the focusing body. It also secures the space itself and becomes a small space, which serves to improve the functions of drainage, clogging resistance, and pressure resistance.

Since the space chambers 2, 2a, 2b which are water channels are the same as commercially available vinyl pipes and the like, they are completely smooth, and when they are bundled together, the spaces between them are also smooth, and Since a space is formed in the substantially circular shape of the C-shaped projection, it serves as a drainage passage, so that the drainage capacity is improved.

Next, as a function required as an underdrain, since these are generally buried in the soil, repair, maintenance, and replacement are almost impossible, and therefore they are destroyed. It is necessary to take measures against the loss of permanence due to clogging with sand or sand.

Plate-like continuous projections 5, 5a, 5b, 5c, 5d provided in the immediate vicinity of the openings 3, 3a, 3b,
5e is for solving these problems, and earth pressure (heavy machinery pressure) is applied to the three space chambers from above (from lower right for 2a, from lower left for 2b). , When the tip of the outer plate 6 tries to be rolled inward, earth pressure (heavy machinery pressure) is applied from below by the projection 5 and the arch action as a circular tube in which the tip of the outer plate 6 is supported Will be exhibited immediately. Space chambers 2a, 2b
However, exactly the same effect is exerted by the projections 5b and 5d. With respect to earth pressure (heavy machinery pressure) from the left and right directions, the outer plates 6, 6a, 6b are supported by the member 7 separating the space chambers 2, 2a, 2b, and a water channel on the circular pipe is secured. become.

That is, of the three space chambers in FIG. 1, the space chamber 2 will be described. When external pressure is applied from above (the direction of the C-shaped projection 4), the tip of the outer plate 6 is plate-shaped. The space 5 can be prevented from being deformed by reliably contacting the protrusion 5 or 5a. Further, when external pressure is applied from the right direction (the direction of the plate-shaped projection 5a), the tip of the outer plate 6 is moved to the plate-shaped projection 5
It is possible to prevent the deformation of the space chamber 2 by making sure contact with. Further, when an external pressure is applied from the left direction (the direction of the plate-shaped projection 5e), the tip of the outer plate 6 is surely brought into contact with the plate-shaped projection 5a to prevent the deformation of the space chamber 2. The deformations of the space chambers 2a and 2b with respect to the external pressure are similar to those of the space chamber 2 and can withstand the external pressure from all directions.

In addition, not only the drainage pipe of the present invention but also many other drain pipes are generally filled with filter materials such as crushed stone, gravel, chaff, rough sand, etc. around the underdrain drainage pipe. It is practically impossible to prevent the surrounding sand and sand from invading around these underdrain pipes, and it is necessary to prevent re-invasion of the sand and sand into the water channel as much as possible. As a countermeasure against this, in the present invention, the plate-shaped projections 5 and 5 are provided.
a and 5b are provided near the insides of the openings 3, 3a and 3b, and projections 5c, 5d and 5e are provided near the outsides of the openings 3, 3a and 3b to bend the invasion path and block the sand and sand. Stop and deposit fine sand there. The flow velocity of the invading water to the underdrain drainage pipe is extremely small, and a slight reduction in the flow velocity has an effect of depositing inclusions, so that clogging in the water channel can be prevented.

[0018]

Further, C-shaped projections 4 and 4 of the drainage pipe 1
Since a and 4b have a notch in part of the circumference,
It has elasticity against external pressure and improves the pressure resistance function in high embankments.

FIG. 2 shows a state 8 in which a large number of underdrain collection drainage pipes 1 having the above-mentioned functions are randomly bundled and bound by a binding member 10 such as a polypropylene synthetic resin band or other binding number wires.

In FIG. 3, a bundle of the underdrain drainage pipes 1 is arranged in the soil and filled with crushed stone 9.

FIG. 4 shows a case where a large-sized underdrain collector / drainage pipe 1 is used alone. This is to secure a larger lumen and improve the efficiency of drainage / collection when the drainage is large. They are arranged and have a great economic effect.

FIG. 5 shows a state 8 in which the underdrain collecting and draining pipes 1 are bound together.
It is a reference view showing a usage state of. Concrete retaining wall 12
The hole 14 is excavated by the horizontal boring at an angle of 10 ° to 15 ° upward on the slope 13 on the rear surface, and the bundled underdrain drainage pipe 8 is inserted and installed. The water collecting well 15 is mainly provided to treat water deep in the ground. It is used for deep water drainage, but also for shallow water drainage.

[0024]

[Effects of the Invention] As described above, according to the present invention, when the drainage pipe of the underdrain is buried in the soil, the space chamber is created even when earth pressure or heavy machinery pressure is applied from all directions of the outer circumference of the drainage pipe. Compressive deformation can be prevented as much as possible, and further, it is possible to prevent dirt and sand from entering the drainage outlet in the middle of the water and prevent the water channel from being blocked. Also, since the underdrain collection and drainage pipe has a C-shaped projection outside the substantially central part of each outer plate, if it is used in a bundle, it will not block the openings of other collection and drainage pipes, and The space portion of is increased, and drainage and clogging resistance can be improved. Furthermore, the C-shaped protrusions are elastic in a curved plate shape with respect to earth pressure, and the pressure resistance can be improved.

[0025]

[Brief description of drawings]

FIG. 1 is a perspective view of an underdrain drainage pipe 1 according to an embodiment of the present invention.

FIG. 2 is a view showing a state in which a large number of underdrain drainage pipes 1 are randomly stacked and bound together.

FIG. 3 is a diagram showing a state in which a bundle of underdrain collection drainage pipes 1 is arranged in the soil.

FIG. 4 is a diagram showing a state in which a large-sized underdrain collection drain pipe 1 is arranged in the soil.

FIG. 5 is a cross-sectional view of a bundle of underdrain collection drainage pipes 1.

[Explanation of symbols]

 1 Underdrain drainage pipes 2, 2a, 2b Space chambers 3, 3a, 3b Openings 4, 4a, 4b, C-shaped projections 5, 5a, 5b, 5c, 5d, 5e Plate-shaped projections

Claims (1)

[Scope of utility model registration request] 1. A culvert drainage pipe which is buried in soil to collect spring water in the soil or permeated water from the ground, comprising three continuous, continuous notches along the axis of the culvert drainage pipe. The outer plates 6, 6a, 6 which are partitioned by the openings 3, 3a, 3b and the partition plate 7 extending in the circumferential direction and which connect the openings 3, 3a, 3b to the partition plate 7.
b, the three outer chambers 2, 2a, 2b whose outer shape is formed in a three-lobed shape, and the openings 3, 3a, 3b are provided in the vicinity of the outer sides of the outer plates 6, 6a, 6b. At least three continuous plate-shaped projections 5, 5a, 5b, and three continuous C-shaped projections 4, 4a provided outward at approximately the center of each outer plate 6, 6a, 6b. , 4b, and an underdrain collection drainage pipe.