JP3175668U - Waste storage container - Google Patents

Abstract

To provide a waste storage container capable of improving construction efficiency and quality control when forming a water shielding layer.
A waste storage container including a concrete container (3) for storing waste and a water shielding layer (4) covering an outer surface of the waste, wherein the water shielding layer (4) includes a plurality of water shielding sheets (5, 5). The auxiliary material 6 formed by welding and formed integrally with a rectangular bottom portion 61 and a side portion 62 having a square shape that rises from the periphery of the bottom portion 61 is a corner portion of the water shielding layer 4. Placed in.
[Selection] Figure 4

Description

  The present invention relates to a waste storage container.

  In the waste storage container, a water shielding layer is formed along the bottom and side surfaces of the waste storage container in order to prevent toxic substances from leaching and diffusing to the surroundings.

  Such a water shielding layer is generally composed of a water shielding sheet made of synthetic resin, synthetic rubber or the like.

  Since the water shielding sheets need to be joined without a gap, a pressure test or a negative pressure test may be performed after laying the water shielding sheets to check the bonding property between the water shielding sheets.

  In the case where the waste storage container has a corner portion, it is necessary to weld a relatively hard water-impervious sheet at the corner portion while bending it at the site, which requires time and effort.

  Moreover, since the shape of the welds between the water shielding sheets at the corners is complicated, it has been difficult to perform a pressure test and a negative pressure test for confirming the welding performance of the water shielding sheets. Therefore, it is necessary to confirm by visual inspection or the like, and the work is troublesome.

  An object of the present invention is to solve the above-mentioned problems, and to propose a waste storage container capable of improving construction efficiency and quality control when forming a water shielding layer. And

  In order to solve the above-mentioned problems, the present invention is a waste storage container having a water-impervious layer formed by welding a plurality of water-impervious sheets, and is a plan view rising from the bottom and the periphery of the bottom. An auxiliary material formed integrally with the letter-shaped side portion is arranged at a corner portion of the water shielding layer.

  According to such a waste storage container, since the auxiliary material is disposed to the corner portion of the water shielding layer, it is not necessary to weld the water shielding sheet in a complicated manner while bending the water shielding sheet at the corner portion. Therefore, it is possible to join the water shielding sheets so that the welding line is a straight line even at the corners, and it is possible to improve the construction efficiency. The auxiliary material is disposed between the concrete container and the water shielding layer or on the water shielding sheet of the water shielding layer.

Moreover, since it is possible to confirm the bonding property between the water shielding sheets by a pressure test or a negative pressure test, quality control is also improved.
Since the auxiliary material is formed in a predetermined shape in advance, it is possible to omit a complicated operation due to on-site alignment.

  If the water shielding layer is formed along the inner surface of the concrete container and the auxiliary material is fixed to the concrete container via an embedded metal embedded in the concrete container, the auxiliary material is installed. Can be easily performed.

  According to the waste storage container of the present invention, it is possible to improve construction efficiency and quality control when forming a water shielding layer.

It is a perspective view which shows the waste storage container which concerns on embodiment of this invention. It is sectional drawing which shows the outline | summary of the waste storage container of FIG. The perspective view which looks at the corner part of a water-shielding layer from an outer surface. (A) is a perspective view which shows the attachment condition to the concrete container of an auxiliary material, (b) is a perspective view which shows the laying condition of a water-impervious sheet.

  As shown in FIG. 1 and FIG. 2, the waste storage container 1 of the present embodiment includes a water-impervious layer formed by a concrete container 3 that contains the waste 2 and a water-impervious sheet 5 that covers the outer surface of the waste 2. 4 is provided.

The waste 2 is sewer sludge, incinerated ash, earth and sand, weeding, etc. containing radioactive substances, and is packed in a large sandbag or the like.
Note that the waste 2 does not necessarily have to be packed in a sandbag, and may be stored in another container (for example, a box or a bag) or directly covered with the water shielding sheet 5. Also good.

  The concrete container 3 is a box-shaped container that seals in a state in which the waste 2 is accommodated, and includes a bottom plate 31 that covers the bottom of the waste 2, a side wall 32 that covers the side surface, and a lid 33 that covers the top surface. .

In this embodiment, the bottom plate 31 and the side wall 32 of the concrete container 3 are formed by juxtaposing L-shaped retaining walls made of precast concrete.
The precast concrete member forming the bottom plate 31 and the side wall 32 of the concrete container 3 is not limited to the L-type retaining wall, and may be, for example, an inverted T-type retaining wall, or a precast floor slab and a wall member. You may comprise by combining. Further, the bottom plate 31 and the side wall 32 may be formed of cast-in-place concrete.

  The lid 33 is composed of a plurality of plate-like lid members that are horizontally mounted on the upper ends of the side walls 32 and 32. The lid 33 may be formed by arranging a single plate material, or may be formed by in-situ concrete.

The water shielding layer 4 is formed along the inner surface of the concrete container 3 and covers the outer periphery of the waste 2 in a sealed state.
In the present embodiment, a plurality of water-impervious sheets 5, 5,... Are disposed below, on the side and above the waste 2, and the water-impervious sheet 4 is welded together to form the water-impervious layer 4. Forming.
Although the material of the water-impervious sheet 5 is not limited, for example, a material made of natural rubber, synthetic rubber, polyethylene or the like is used.

As shown in FIG. 3, the outer surface of the corner portion of the water shielding layer 4 is covered with the auxiliary material 6.
The auxiliary member 6 is a member having water shielding properties, and a rectangular bottom portion 61 and a side portion 62 having a square shape in plan view rising from the periphery of the bottom portion 61 are integrally formed. Although the auxiliary material 6 of this embodiment is formed with the same material as the water-impervious sheet 5, the material which comprises the auxiliary material 6 is not limited.

  The auxiliary material 6 is disposed between the concrete container 3 and the water shielding layer 4, and is fixed to the concrete container 3 via an embedded metal (not shown) embedded in the concrete container 3. The configuration and arrangement of the embedded metal are not limited as long as the auxiliary metal 6 can be fixed while maintaining the water shielding property.

The construction of the waste storage container 1 is as follows.
First, the bottom plate 31 and the side wall 32 of the concrete container 3 are constructed by arranging a plurality of L-shaped retaining walls on the ground that has been leveled.

Next, the auxiliary material 6 is fixed to the corner portion inside the concrete container 3.
The auxiliary material 6 is fixed to an embedded metal object embedded in the concrete container 3 in advance. Note that an attachment (not shown) is attached to the outer surface of the auxiliary material 6 in correspondence with the position of the embedded metal. By attaching this attachment to the embedded metal, the auxiliary material 6 can be fixed to the concrete container 3. Complete.

Subsequently, a water shielding sheet 5 is laid inside the concrete container 3.
After the water-impervious sheet 5 is laid out so that the ends overlap with other adjacent water-impervious sheets 5, the ends of the water-impervious sheets 5, 5 are welded together by an automatic welding machine (not shown).
In addition, the auxiliary material 6 and the water shielding sheet 5 are welded by the heat at the time of welding of the water shielding sheets 5 and 5.

When the water-impervious sheet 5 is laid, the waste 2 packed in a sandbag is placed on the upper surface of the water-impervious sheet 5, and the side and upper surfaces of the waste 2 are covered with the water-impervious sheet 5.
And the construction is completed by putting the lid 33 on the concrete container 3.

  According to the waste storage container 1 of the present embodiment, since the auxiliary material 6 is disposed with respect to the corner portion of the water shielding layer 4, welding is performed while the water shielding sheet 5 is bent in a complicated manner at the corner portion. There is no need to do. Therefore, as shown in FIG. 4B, the water shielding sheets 5 and 5 can be joined (welded) so that the weld line 51 is a straight line even at the corners. Therefore, construction efficiency can be greatly improved.

  In addition, since the weld line 51 is a straight line, a quality control test for confirming the bondability (water-stopping performance) between the water-impervious sheets 5 and 5 is reliably performed by a pressure test, a negative pressure test, or the like. And quality control is improved.

Since the auxiliary material 6 is formed in a predetermined shape in advance, it is possible to omit a complicated operation due to on-site alignment.
Moreover, the fixing work of the auxiliary material 6 can be easily performed by fixing the auxiliary material 6 through the embedded metal.
By welding the water-impervious sheet 5 and the auxiliary material 6, the water stoppage is improved.

  Moreover, since the outer periphery of the waste 2 is covered with the water shielding layer 4, moisture (rainwater, groundwater, etc.) does not permeate from the outside. Further, since moisture does not flow out from the water shielding layer 4, no contaminants flow out along with the outflow of moisture.

  Moreover, since the waste storage container 1 has sealed the waste 2 with the concrete container 3, it can store the waste 2 safely in the state which shielded the radiation.

Since the concrete container 3 is configured by combining the precast members, it can be formed in a short period of time.
Therefore, even if it is a case where urgency is required, the waste 2 can be temporarily placed at an early stage.

  The embodiment according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and the above-described components can be appropriately changed without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the case where the water shielding layer is formed inside the concrete container and the waste is stored has been described. However, the concrete container may be formed as necessary and may be omitted. When forming a water shielding layer directly in the ground, the waste storage container of the present invention may be employed.

In the above embodiment, the auxiliary material is fixed to the concrete container by the embedded metal, but the auxiliary material may be bonded to the concrete container, and is not necessarily fixed by the embedded metal.
The auxiliary material and the water shielding sheet may be welded at the end of the auxiliary material.

  In the above embodiment, the case where the auxiliary material is disposed between the concrete container and the water shielding layer has been described. However, the auxiliary material is disposed on the water shielding sheet (between the water shielding layer and the waste). Also good.

DESCRIPTION OF SYMBOLS 1 Waste storage container 2 Waste 3 Concrete container 4 Water shielding layer 5 Water shielding sheet 51 Welding wire 6 Auxiliary material

Claims (2)

A waste storage container comprising a water shielding layer formed by welding a plurality of water shielding sheets,
A waste storage container, wherein an auxiliary material formed integrally with a bottom and a square-shaped side portion that rises from a peripheral edge of the bottom is disposed at a corner of the water shielding layer. . The water shielding layer is formed along the inner surface of the concrete container;
The waste storage container according to claim 1, wherein the auxiliary material is fixed to the concrete container via an embedded metal embedded in the concrete container.

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