JPS59353Y2 - underground pipe - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to underground pipes used for piping in soft ground, especially in places with a lot of spring water.

When piping is buried in damp ground such as soft ground, the flow of underground water may cause the piping ground to sink or localize, causing pipe accidents, or the piping may rise due to flooding of the piping ground. There were many accidents.

Various measures have been attempted in the past as countermeasures against this problem.

For example, as shown in FIG. 2, a perforated pipe 5 is placed below the main pipe 4.
A method has been adopted in which water in the vicinity of the main pipe 4 is introduced into the perforated pipe 5 and drained.

In this method, the path through which water flows into the perforated pipe 5 is formed at the contact surface between the outer wall of the main pipe 4 and the soil, as shown by the arrow in the figure.

A so-called water path is created. Therefore, the soil in this area is gradually removed and washed away, causing the main pipe to move, and sometimes the main pipe to cave in.

At the piping construction site, the main pipe and the perforated pipe had to be buried separately, resulting in poor workability.

This invention was obtained as a result of intensive studies to improve these conventional disadvantages and provide a good underground pipe.It is a honeycomb-shaped double structure pipe, and the outer layer of the protection pipe has a small This is an underground pipe characterized by having holes.

Hereinafter, the present invention will be explained in more detail with reference to the drawings.

Figure 1 shows an embodiment of the underground pipe of the present invention.
In the figure, reference numeral 1 indicates a double-structured tube, and an inner layer 11, an outer layer 12, and ribs 13 constitute a honeycomb-shaped tube.

Further, the outer layer 12 is provided with a large number of small holes 2.

If the underground pipe with the above structure is buried in soft ground, the water around the underground pipe and the water that reached the underground pipe from above will enter the honeycomb void 3 through the small hole 2 and be drained, so the water path will be It almost never occurs.

Moreover, since the buried pipe has a honeycomb structure, it is extremely strong in terms of strength.

Since the present invention is an underground pipe with the structure described above,
There are advantages described above.

That is, the underground pipe of the present invention can discharge water without forming a water path around it, making it possible to prevent accidents such as subsidence or floating of the pipe ground.

In addition, the underground pipe of this invention has various advantages such as the main pipe and perforated pipe are integrated and can be installed at the burial site all at once, which requires very little labor and is excellent in terms of workability. It has the following.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a buried portion formed by conventional piping construction. 1...Double structure pipe, 11...Inner layer, 1
2...Outer layer, 2...Small pores.

Claims (1)

[Scope of utility model registration request] An underground pipe characterized by having a honeycomb-like double structure pipe and having small holes in the outer layer of the protection pipe.