JPH0637113Y2 - Wastewater treatment structure - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a wastewater treatment structure for both surface and underground use.

[Conventional technology]

For example, in order to prevent the occurrence of landslide collapse due to cut soil, drainage treatment from the slope and drainage treatment in the ground must be performed.Therefore, surface drainage has traditionally been treated in the surface drainage gutters. The drainage inside was treated separately by the dark beam drainage work.

If the above-mentioned surface drainage gutters and dark beam drainage works are constructed of large structures such as concrete, a huge budget is required for construction and maintenance, and construction is not possible at your own expense. It is necessary to adopt various structures.

Figure 10 shows a gutter that uses a lightweight trough 1 made of synthetic resin for drainage treatment from the slope due to cut soil. It is lighter in weight and cheaper in material and construction cost than a concrete trough. There are advantages.

[Problems to be solved by the device]

By the way, the water that has penetrated into the soil from the slope acts as water pressure on the outer surface of the lightweight trough 1 as shown by the arrow in FIG. 11, and since the synthetic resin trough is lightweight, if water pressure acts on the outer peripheral surface. As shown in Fig. 11, there is a problem that the lightweight trough 1 floats up, which is because drainage in the ground is not completed completely.

Therefore, an object of the present invention is to provide a wastewater treatment structure capable of reliably draining water on the surface and in the ground, and being lightweight and low in construction cost as a whole.

[Means for Solving the Problems]

In order to solve the above problems, the present invention provides an internal hollow dark beam in the lower part of the gutter, provides a number of through holes in the dark beam, and mounts a water absorbing material on the inner peripheral surface so as to overlap the water absorbing material. The structure is such that an opening / closing valve for opening and closing the through hole is provided in a portion of the material located above the lower through hole.

[Action]

The gutter treats surface drainage and the dark beams treat underground drainage.

The dark beam has a large number of through-holes and the water absorbing material is layered on the inner peripheral surface, so that the drainage in the ground can be introduced efficiently due to the capillary action of the water absorbing material. The pressure water concentrated in the lower part of the lower part of the bottom plate flows in from the lower through hole by opening the on-off valve, and the water flowing inside the dark beam is prevented from leaking to the outside by closing the lower through hole by the on-off valve.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 9 of the accompanying drawings.

As shown in the figure, the side groove 11 is made of a synthetic resin such as vinyl chloride, and is provided on both sides of the bottom plate 12 so that the pair of side plates 13 and 13 are spread toward the upper side, and the side grooves 11 face downward on both sides of the bottom plate 12. The flanges 14 and 14 are formed in a protruding cross-sectional shape.

The dark beam 15 provided below the side groove 11 is made of a synthetic resin such as vinyl chloride and has a cross section U having a width to be fitted between the flanges 14 and 14.
A large number of through holes 16 are formed in both side wall portions and the lowermost position.

A water absorbing material 17 such as a felt is stacked on the inner peripheral surface of the dark beam 15, and an opening / closing valve 18 for the through hole 16a is provided in a portion of the water absorbing material 17 located above the lower through hole 16a.

The first example of the on-off valve 18 shown in FIGS. 1 to 5 is a water absorbing material.
A through hole 19 that communicates with the lower through hole 16a is provided in 17 and this through hole 1
9 An on-off valve 18 made of the same material as the water-absorbing material 17 is overlapped so as to cover the top, and a portion located upstream of this on-off valve 18 is
The structure is fixed by adhesion, welding, sewing, etc.

A second example shown in FIGS. 6 and 7 is that a partly cut-off cut 20 is provided in a portion of the water absorbent material 17 located on the lower through hole 16a, and a portion surrounded by the cut 20 is opened / closed. The connection portion 20a left by the cut 20 is located upstream of the water flow.

The dark beam 15 is fitted between the flanges 14 and 14 of the side groove 11 on both sides of the upper part as shown in FIG.
It is fixed to the side groove 11 by joining at 21.

The water absorbing material 17 may be provided with a through hole communicating with the through hole 16 as shown in FIG. 1 or may be closed from the inside as shown in FIG. For improvement, the through hole 16 may be a countersink having a large inner diameter so that the water absorbing material 17 faces the outer surface of the dark beam 15.

Figure 1 shows the state of construction of the wastewater treatment structure. A water-impervious concrete 31 or water-impervious sheet is installed at the bottom of the floor digging, and the drainage treatment structure, which is a combination of the gutter 11 and the dark beam 15, is placed inside the floor digging. , Both sides of the dark beam 15 are surrounded by crushed stones 32 and sand 33, both sides of the gutter 11 are fixed with fixed concrete 34, and both sides are filled with backfill soil 35 and lightly pressed.

In the construction state of Fig. 1, the surface drainage of the cut slope is a gutter.
Collect water in 11 and drain.

Infiltrated water or spring water in the cut land gathers around the dark beam 15, is sucked by the water absorbing material 17 at the portion of the through hole 16, and flows into the dark beam 15.

Further, the pressure water collected on the water-impervious concrete 31 pushes the on-off valve 18 open from the lower through hole 16a and flows into the dark beam 15.

When the drainage flows in the dark beam 15, the open / close valve 18 is set to the closed position, and the leakage of water from the lower through hole 16a is prevented.

Therefore, the surface drainage and the underground drainage can be performed together, and the ditch 11 does not rise due to the underground water pressure.

FIGS. 8 and 9 exemplify the preferred installation location of the wastewater treatment structure, and FIG. 8 shows installation at each lower end of the cut slope,
Figure 9 shows surface drainage of the constructed embankment.

〔effect〕

As described above, according to the present invention, since the dark beam is provided in the lower part of the gutter, and a large number of through holes are provided in the dark beam and the water absorbing material is stacked and fixed inside, the surface drainage can be treated by the gutter. Underground drainage can be treated with a dark beam, and even if it is configured with a side trough lightweight trough, there is no rise due to water pressure, and the drainage treatment on the surface and in the ground can be made lightweight and simplified, and the construction cost can be greatly reduced. become.

In addition, since the dark beam is provided with water absorbing material on the inner peripheral surface, it has extremely good groundwater drainage introduction, and since the lower through hole can be opened and closed by an on-off valve, the introduction of underground pressure water can be done without any problems. Moreover, it is possible to prevent leakage of running water in the dark beam.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a construction state of the wastewater treatment structure according to the present invention, FIG. 2 is a perspective view of the wastewater treatment structure, FIG. 3 is a partially cutaway front view of the same, and FIG. FIG. 5 is a cross-sectional plan view showing a first example, FIG. 5 is a vertical cross-sectional side view showing the same as above, FIG. 6 is a cross-sectional plan view showing a second example of an on-off valve, and FIG. 7 is a vertical cross-sectional side view showing the same. 9 and FIG. 9 are explanatory views showing an example of a used portion of the waste water treatment structure, and FIGS. 10 and 11 are explanatory views showing a conventional side groove. 11 …… gutter, 15 …… dark beam, 16 …… through hole, 16a …… lower through hole, 17 …… water absorbing material, 18 …… open / close valve.

Claims (1)

[Scope of utility model registration request] 1. A dark beam having a hollow inside is provided in the lower part of the side groove, a large number of through holes are provided in the dark beam, and a water absorbing material is mounted on the inner peripheral surface so as to be positioned on the lower through hole of the water absorbing material. Wastewater treatment structure with an on-off valve that opens and closes this through hole in a part.