JP2928958B2 - Method of manufacturing radiation shielding wall assembling block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a block for assembling a radiation shielding wall constructed around a radiation generating device such as a radiation light source device.

[0002]

2. Description of the Related Art FIG. 3 shows a case where a radiation shielding wall 1 is constructed around a radiation light source device 4 and a light source room 41 is constructed. The shielding wall 1 in this case is assembled by a plurality of concrete blocks 11, and the blocks 11
Is an engagement structure that can be partially pulled out. Therefore, by pulling out the block 11 at an arbitrary position, the shielding wall 1 can be easily disassembled. Therefore,
Compared with a shield wall that is integral with a floor and a ceiling that are difficult to dismantle, there is an advantage that the device inside the shield wall 1 can be renewed or modified easily.

[0003]

Conventionally, when manufacturing the block 11 having the above-mentioned engagement structure, concrete is poured into a mold having the same shape as the block 11 and the blocks 11 are individually placed one by one. Had been made. For this reason, the accuracy of the engagement dimension of the blocks 11 decreases, and when the blocks 11 are assembled, a gap may be generated between the blocks 11. Therefore, there is a danger of radiation leaking from the gap.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a method of manufacturing a block body capable of preventing leakage of radiation by closely contacting blocks of a shielding wall. The purpose is to provide. That is, the present invention provides a method of manufacturing a block used when assembling a radiation shielding wall by interlocking a plurality of concrete blocks.
Placing edge trim on the contact surface between adjacent blocks,
A method for producing a block for assembling a radiation shielding wall, characterized by placing concrete in two layers, upper and lower, in the thickness direction of the block.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. <A> Casting of lower layer concrete (Fig. 1) In the present invention, as shown in Fig. 1, concrete is cast into a shape in which a plurality of blocks mesh with each other, and the concrete is divided into two layers in the thickness direction of the blocks. Pour concrete. In this embodiment, a case will be described in which a block having a substantially T-shaped cross section is manufactured. However, any other cross-sectional shape can be adopted as long as it is a mating structure having a joining surface that is not perpendicular to the wall surface of the shielding wall. For example, cross sections are trapezoids, triangles,
It is possible to consider a semicircle and the shape of Mt. Fuji that meshes with it.
First, the lower concrete layer 12 is cast on the floor surface 5. At this time, a trimming material such as a steel plate 2 is previously arranged at the position of the contact surface between the adjacent blocks. On one surface of the steel plate 2, an anchor 21 is protruded in a horizontal direction to prevent the steel plate 2 from peeling off, and is embedded in the lower concrete 12.

<B> Casting of upper concrete (FIG. 1) Next, upper concrete 13 is cast on the upper surface of lower concrete 12. At this time, similarly to the above, at the position of the contact surface between the adjacent blocks, a trimming material such as the steel plate 2 on which the anchor 21 is provided in advance is arranged in advance. In addition, an edge-cutting material such as a peeling material 3 is arranged in advance on the upper surface of the lower concrete layer 12 at the position of the contact surface between adjacent blocks.

<C> Separation and assembly (FIG. 2) Each block is separated after the upper concrete 12 has been cured and hardened. At this time, since the edge cutting material is arranged at the position of the contact surface of each block, separation can be easily performed. Then, as shown in FIG. 2, the separated blocks 11 are raised and engaged again, so that the shielding wall 1 having a structure in which the blocks 11 are in close contact with each other can be assembled.

[0008]

Since the present invention has been described above, the following effects can be obtained. Conventionally, since blocks are manufactured one by one, a gap is generated between the blocks of the shielding wall, and there is a risk that radiation leaks from the gap. On the other hand, in the present invention, concrete is cast into a shape in which blocks are engaged with each other to produce blocks. Accordingly, the accuracy of the engagement dimension of the block is improved, and the contact surface of the block of the shielding wall is in close contact, so that radiation leakage can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a method for manufacturing a block.

FIG. 2 is an explanatory view of a state in which blocks are engaged.

FIG. 3 is an explanatory view of a shielding wall.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI H05H 13/04 H05H 13/04 Z (72) Inventor Hirofumi Kamata 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation Inside the company (72) Masahiro Taniguchi 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Corporation (72) Inventor Takefumi Narukawa 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (58) Field surveyed (Int.Cl. ⁶ , DB name) G21F 3/00 G21F 1/04 G21F 3/04 E04C 1/00 E04H 9/14

Claims (1)

(57) [Claims] 1. A method of manufacturing a radiation shielding wall in which a plurality of concrete blocks are engaged with each other to assemble the radiation shielding wall. A method for producing a block for assembling a radiation shielding wall, comprising arranging an edge-cutting material on contact surfaces of blocks to be formed and placing concrete in two layers in the upper and lower layers in the thickness direction of the block.