JP3370756B2 - Method for geological disposal of radioactive contaminants and method for transporting buffer material compacts - Google Patents
Method for geological disposal of radioactive contaminants and method for transporting buffer material compactsInfo
- Publication number
- JP3370756B2 JP3370756B2 JP31982293A JP31982293A JP3370756B2 JP 3370756 B2 JP3370756 B2 JP 3370756B2 JP 31982293 A JP31982293 A JP 31982293A JP 31982293 A JP31982293 A JP 31982293A JP 3370756 B2 JP3370756 B2 JP 3370756B2
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- JP
- Japan
- Prior art keywords
- molded body
- bottomed cylindrical
- container
- cylindrical molded
- radioactive
- Prior art date
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Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は、放射能汚染物の地層処
分方法及び緩衝材成形体の搬送方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for geological disposal of radioactive contaminants and a method for transporting a molded cushioning material.
【０００２】[0002]
【従来の技術】高・中・低放射能レベルの放射能汚染物
（放射性廃液、放射性廃棄物、使用済燃料等）は、放射
能レベル（高・中・低）毎に分類して、それらに該当す
る専用の密封容器に収納して、保管・貯蔵するようにし
ている。2. Description of the Related Art Radioactive contaminants (radioactive waste liquid, radioactive waste, spent fuel, etc.) with high, medium and low radioactivity levels are classified by radioactivity level (high, medium and low) and It is stored and stored in a dedicated sealed container corresponding to the above.
【０００３】放射能汚染物を深地層内に収納処分して生
活圏から隔離するための関連技術として、特開平２−
２３６５００号「放射性廃棄物処分用緩衝材の製造方
法」や
特開平５−１５００９７号「放射性物質収納体の地層
処分方法及び地層処分体」が提案されている。As a related technique for accommodating radioactive contaminants in a deep underground and isolating them from the living sphere, Japanese Patent Application Laid-Open No. HEI 2-
No. 236500, "Method for producing buffer material for radioactive waste disposal", and JP-A-5-150097, "Method for geological disposal of radioactive material storage body and geological disposal body" have been proposed.
【０００４】前者の技術は、ベントナイト等からなる粉
末を、冷間等方圧プレス等により高密度状態に圧縮固化
してブロック状の成形体とし、地層処分場所に搬入し
て、ガラス固化状態としたもの等の固化体（放射能汚染
物収納体）の回りを、ブロック状緩衝材で囲むように埋
設するものである。また、後者の技術は、図７に示すよ
うに、岩盤（母岩）１を掘削して処分孔２を明けておい
て、冷間等方圧プレス等により放射性物質収納体（放射
能汚染物収納体）Ａの回りに高密度緩衝層５Ｈを形成し
た地層処分体Ｃを製作しておいて、該地層処分体Ｃを処
分孔２の中に装填して、間隙Ｇに細粒状のベントナイト
等の緩衝材を充填する等の処理して埋設し、さらに処分
孔２の上を蓋６で覆うとともに、該蓋６を岩盤１にアン
カーボルト７で固定するようにしている。なお、図中符
号８はトンネルである。In the former technique, a powder made of bentonite or the like is compressed and solidified into a high-density state by a cold isostatic press or the like to form a block-shaped molded body, which is carried into a geological disposal site to be in a vitrified state. The solidified body (radioactive contaminant storage body) such as the above is embedded so as to be surrounded by a block-shaped cushioning material. In the latter technique, as shown in FIG. 7, a rock (host rock) 1 is excavated to open a disposal hole 2, and a radioactive substance container (radioactive pollutant) is collected by cold isostatic pressing or the like. (Collecting body) A, a geological disposal body C in which a high-density buffer layer 5H is formed is manufactured, and the geological disposal body C is loaded into the disposal hole 2 to form a fine-grained bentonite or the like in the gap G. The buffer material is buried by being filled with the buffer material, the disposal hole 2 is covered with a lid 6, and the lid 6 is fixed to the bedrock 1 with anchor bolts 7. Reference numeral 8 in the drawing is a tunnel.
【０００５】[0005]
【発明が解決しようとする課題】しかし、前者の技術で
あると、緩衝材がブロック状をなしているため、工場等
において大量に製造しておいて、処分現場まで搬入する
ことにより、比較的簡単に地層処分作業を実施すること
ができるという長所を有しているが、ブロック状緩衝材
を放射能汚染物収納体の回りに複数積層する必要がある
ために、積層部分に間隙が形成され易く、ブロック化し
た数だけ透水性が損なわれる箇所が生じるため、地下水
の透過を阻止する上で不利となる。また、後者の技術で
あると、透水性を低くして放射能汚染物収納体Ａへの水
の侵入を阻止する上で好適なものとなるが、高密度緩衝
層５Ｈの脆さ、地層処分体Ｃの大重量化等により、放射
能汚染物収納体Ａを高密度緩衝層５Ｈで覆った状態の地
層処分体Ｃを、地上からトンネル８及び処分孔２まで搬
入及び装填する際に、高密度緩衝層５Ｈが破損し易くな
るとともに、取り扱い性が悪く作業性が低下し易くな
る。However, according to the former technique, since the cushioning material is in the form of a block, a large amount of it is manufactured in a factory or the like, and then carried to the disposal site. Although it has the advantage that the geological disposal work can be carried out easily, it is necessary to stack multiple block-shaped cushioning materials around the radioactive contaminant storage body, so a gap is formed in the stacked part. Since it is easy, and the number of blocked areas is impaired in the water permeability, it is disadvantageous in preventing the permeation of groundwater. Further, the latter technique is suitable for lowering the water permeability and preventing the invasion of water into the radioactive contaminant storage container A, but the brittleness of the high-density buffer layer 5H and the geological disposal Due to the increased weight of the body C and the like, when the geological disposal body C in which the radioactive contaminant storage body A is covered with the high-density buffer layer 5H is loaded and loaded from the ground to the tunnel 8 and the disposal hole 2, The density buffer layer 5H is likely to be damaged, and the handleability is poor and the workability is likely to be deteriorated.
【０００６】本発明は、上記事情に鑑みてなされたもの
で、緩衝材と放射能汚染物収納体との取り扱い性の向
上、搬送性の向上及び組み合わせ作業性の向上を図り、
加えて、地層処分時における省力化及び作業効率向上と
遮蔽性の向上とを図ることを目的としている。The present invention has been made in view of the above circumstances, and improves the handleability of the cushioning material and the radioactive contaminant container, the transportability, and the combination workability.
In addition, the purpose is to save labor, improve work efficiency, and improve shielding performance during geological disposal.
【０００７】[0007]
【課題を解決するための手段】放射能汚染物収納体を地
中に掘削形成した処分孔に密封状態に埋設する方法とし
て、ベントナイト等の粉末を高密度状態に圧縮固化して
なる有底円筒状成形体を処分孔に装填する工程と、有底
円筒状成形体の収納穴に放射能汚染物収納体を装填する
工程と、放射能汚染物収納体の上を同質の緩衝材で閉塞
する工程とを有する構成を採用する。有底円筒状成形体
の収納穴に放射能汚染物収納体を装填する際に、収納穴
の開口部が同型の有底円筒状成形体によって閉塞される
技術や、同型の有底円筒状成形体の収納穴を向き合わせ
状態にして放射能汚染物収納体を閉塞する技術を付加す
る。放射能汚染物収納体を地中に掘削形成した処分孔に
密封状態に埋設する際に使用される緩衝材を搬送する方
法として、ベントナイトの粉末等からなる緩衝材を高密
度状態に圧縮固化して収納穴を有する有底円筒状成形体
を成形するとともに、該有底円筒状成形体を網で囲んだ
状態で吊持して移送する構成を採用する。また、他の搬
送方法として、ベントナイトの粉末等からなる緩衝材を
高密度状態に圧縮固化して収納穴を有する有底円筒状成
形体を成形するとともに、収納穴を下向きにした状態の
有底円筒状成形体を真空吸着により吊持して移送する構
成を採用する。これらの搬送方法に、ベントナイトの粉
末等からなる緩衝材を高密度状態に圧縮固化して収納穴
を有する有底円筒状成形体を成形するとともに、搬送用
容器内に収納穴を下向きにした状態に有底円筒状成形体
を装填し、搬送用容器内に有底円筒状成形体を収容した
まま移送する技術や、搬送用容器内に有底円筒状成形体
を収容したまま移送し、搬送用容器の天地を逆にして、
搬送用容器を有底円筒状成形体から抜き取り有底円筒状
成形体の外底部を上方に位置させる技術を付加する。As a method for burying a radioactive pollutant container in a disposal hole formed by excavating in the ground in a sealed state, a bottomed cylinder formed by compressing and solidifying powder of bentonite or the like in a high density state. Of filling the cylindrical shaped body into the disposal hole, loading the radioactive contaminant storage body into the storage hole of the bottomed cylindrical molded body, and closing the radioactive pollutant storage body with the same buffer material And a configuration having steps. Technology for closing the opening of the storage hole with the bottomed cylindrical molded body when loading the radioactive contaminant storage body into the storage hole of the bottomed cylindrical molded body, or the bottomed cylindrical molded body of the same type A technique is added to close the radioactive contaminant storage body by making the body storage holes face each other. As a method of transporting the cushioning material used when burying the radioactive pollutant container in the disposal hole formed by excavation in the ground in a sealed state, the cushioning material made of bentonite powder etc. is compressed and solidified to a high density state. A bottomed cylindrical molded body having a storage hole is molded, and the bottomed cylindrical molded body is suspended and transferred while being surrounded by a net. As another transportation method, a cushioning material made of bentonite powder or the like is compressed and solidified into a high-density state to form a bottomed cylindrical molded body having a storage hole, and the bottomed hole with the storage hole facing downward. A configuration is adopted in which a cylindrical molded body is hung and transferred by vacuum suction. In these transportation methods, a cushioning material made of bentonite powder or the like is compressed and solidified into a high-density state to form a bottomed cylindrical molded body having a storage hole, and the storage hole is oriented downward in the transport container. A technique of loading a bottomed cylindrical molded body into a transport container and transferring it while the bottomed cylindrical molded body is housed in the transport container, or a method of transferring while transporting the bottomed cylindrical molded body in the transport container Reverse the top and bottom of the container,
A technique for extracting the transport container from the bottomed cylindrical molded body and positioning the outer bottom portion of the bottomed cylindrical molded body above is added.
【０００８】[0008]
【作用】放射能汚染物収納体は、地中に掘削形成した処
分孔に密封状態に埋設されるが、その埋設に先立って、
緩衝材からなる有底円筒状成形体を製造しておいて、有
底円筒状成形体を処分孔に装填した状態で、収納穴に放
射能汚染物収納体を装填して閉塞状態とされる。有底円
筒状成形体の収納穴を同型の有底円筒状成形体によって
閉塞し、有底円筒状成形体を多段に積上げると、その下
部に位置する放射能汚染物収納体が密閉状態となり、こ
の際に、収納穴が向き合うように有底円筒状成形体を組
み合わせると、必要数の放射能汚染物収納体が密閉され
る。収納穴に放射能汚染物収納体を装填すると、有底円
筒状成形体の壁が高密度状態に圧縮固化されていること
により、遮水性が向上し放射能汚染物収納体の隔離状態
の保持がなされる。有底円筒状成形体を網で囲んだ状態
で吊持すると、有底円筒状成形体に大きな力が加わるこ
とがなく、収納穴を上向き状態にした有底円筒状成形体
が処分孔に装填される。収納穴を下向きにした状態の有
底円筒状成形体を真空吸着により吊持することにより、
大きな吸引面積を利用して効率よく移送が行なわれる。
搬送用容器を利用して、収納穴を下向きにした状態に有
底円筒状成形体を装填しておくと、有底円筒状成形体を
必要箇所まで移送した後、真空吸着に基づく吊持等によ
って有底円筒状成形体が搬送用容器から取り出される。
搬送用容器の天地を逆にして、搬送用容器を有底円筒状
成形体から抜き取ることによって、有底円筒状成形体が
露出状態となり、その外底部を上方に位置させた状態と
して、有底円筒状成形体の移送や処分孔への装填が実施
される。[Function] The radioactive contamination container is buried in a disposal hole formed by excavation in the ground in a sealed state. Prior to the burial,
A bottomed cylindrical molded body made of a cushioning material is manufactured, and in the state where the bottomed cylindrical molded body is loaded into the disposal hole, the radioactive contaminant storage body is loaded into the storage hole to be closed. . When the storage hole of the bottomed cylindrical molded body is closed by the bottomed cylindrical molded body of the same type and the bottomed cylindrical molded body is stacked in multiple stages, the radioactive contaminant storage body located below it becomes a closed state. At this time, if the bottomed cylindrical molded bodies are combined so that the storage holes face each other, a required number of radioactive contaminant storage bodies are sealed. When the storage box for radioactive contaminants is loaded in the storage hole, the wall of the bottomed cylindrical molded body is compressed and solidified in a high density state, improving water impermeability and maintaining the isolated state of the radioactive contamination storage body. Is done. When the bottomed cylindrical molded body is suspended in a state of being surrounded by a net, a large force is not applied to the bottomed cylindrical molded body, and the bottomed cylindrical molded body with the storage hole facing upward is loaded into the disposal hole. To be done. By suspending the bottomed cylindrical molded body with the storage hole facing downward by vacuum suction,
A large suction area is used for efficient transfer.
If you use the transport container to load the bottomed cylindrical molded body with the storage hole facing downward, after transferring the bottomed cylindrical molded body to the required location, lifting based on vacuum suction etc. Thus, the bottomed cylindrical molded body is taken out of the transport container.
By turning the top and bottom of the transfer container upside down and pulling out the transfer container from the bottomed cylindrical molded body, the bottomed cylindrical molded body is exposed and the outer bottom part is positioned above. The cylindrical molded body is transferred and loaded into the disposal hole.
【０００９】[0009]
【実施例】以下、本発明に係る放射能汚染物の地層処分
方法及び緩衝材成形体の搬送方法の実施例について、図
１ないし図６に基づいて説明する。これら各図におい
て、符号９は縦坑、１１は放射能汚染物地層処分用緩衝
材成形体（有底円筒状成形体：緩衝材成形体）、１１ａ
は収納穴、１１ｂは突部、１１ｃは窪部、１２は搬送用
容器、１２ａは上蓋、１３は昇降機、１４は台車、１５
はトレイ、１６は網、１７はクレーン、１８は吊持具、
１９は吸着盤、２１はスペーサである。EXAMPLES Examples of the method for disposing of radioactive contaminants according to the present invention and the method for conveying a buffer material molded body will be described below with reference to FIGS. 1 to 6. In each of these figures, reference numeral 9 is a vertical shaft, 11 is a buffer material molded body for disposal of radioactive contaminants in the geological layer (cylindrical molded body with bottom: buffer material molded body), 11a
Is a storage hole, 11b is a protrusion, 11c is a depression, 12 is a container for transportation, 12a is an upper lid, 13 is an elevator, 14 is a trolley, 15
Is a tray, 16 is a net, 17 is a crane, 18 is a lifting tool,
Reference numeral 19 is a suction plate, and 21 is a spacer.
【００１０】前記有底円筒状成形体（つまり緩衝材成形
体）１１は、例えばベントナイト等の粉末を冷間等方圧
プレス等により高密度状態に圧縮固化して有底円筒状に
形成され、放射能汚染物収納体Ａを装填して収納するた
めの収納穴１１ａを有している。The bottomed cylindrical molded body (that is, the cushioning material molded body) 11 is formed into a bottomed cylindrical shape by compressing and solidifying powder such as bentonite into a high-density state by cold isostatic pressing or the like. It has a storage hole 11a for loading and storing the radioactive contaminant storage A.
【００１１】前記搬送用容器１２は、その内部に有底円
筒状成形体１１を収容し得る大きさの空間を有するとと
もに、上蓋１２ａによって閉塞される。The transfer container 12 has a space inside which is large enough to accommodate the bottomed cylindrical molded body 11, and is closed by an upper lid 12a.
【００１２】以下、搬送方法及び地層処分方法の詳細に
ついて説明すると、次の通りである。The details of the transportation method and the geological disposal method will be described below.
【００１３】有底円筒状成形体１１の製造は、例えば工
場等の作業環境の優れた場所において、ベントナイト等
の粉末を冷間等方圧プレス等により高密度状態に圧縮固
化して形成され、図１に示すように、搬送用容器１２の
内部に収納穴１１ａを下向きにした状態に装填され、上
蓋１２ａによって閉塞された状態にして、地層処分現場
の縦坑９を経由して、トンネル８の中またはその近傍位
置まで搬送される。The bottomed cylindrical molded body 11 is manufactured by compressing and solidifying powder of bentonite or the like into a high-density state by cold isostatic pressing or the like in a place having excellent working environment such as a factory. As shown in FIG. 1, the container 12 for transportation is loaded with the storage hole 11a facing downward, and is closed by the upper lid 12a, and the tunnel 8 is passed through the vertical shaft 9 at the geological disposal site. It is transported to the inside or near the position.
【００１４】図１にあっては、収納穴１１ａを下向きま
たは上向き状態とした姿勢の有底円筒状成形体１１が、
縦坑９の近傍位置に待機させられている。なお、有底円
筒状成形体１１の上下反転は、搬送用容器１２の天地を
逆にすることにより、必要に応じて行なわれる。In FIG. 1, the bottomed cylindrical molded body 11 in a posture in which the storage hole 11a is oriented downward or upward is shown in FIG.
It stands by in the vicinity of the vertical shaft 9. The bottomed cylindrical molded body 11 is turned upside down as required by reversing the top and bottom of the carrying container 12.
【００１５】縦坑９の内部には、昇降機１３が配され、
搬送用容器１２に収納した状態の有底円筒状成形体１１
を台車１４に搭載した状態のまま、トンネル８の高さ位
置まで、矢印で示すように下降させることにより搬入さ
れる。An elevator 13 is arranged inside the shaft 9,
Bottomed cylindrical molded body 11 housed in a transport container 12
While being mounted on the trolley 14, it is carried in by descending to the height position of the tunnel 8 as shown by the arrow.
【００１６】台車１４に収納穴１１ａを上向き状態に搭
載された有底円筒状成形体１１は、搬送用容器１２を引
き上げて外すことにより抜き取られて露出状態となる。The bottomed cylindrical molded body 11 mounted on the trolley 14 with the storage hole 11a facing upward is taken out by exposing the carrying container 12 by pulling it up and exposed.
【００１７】有底円筒状成形体１１は、台車１４にトレ
イ１５を介在させた状態で搭載され、トンネル８の内部
における処分孔２の近傍位置まで移送される。この際
に、収納穴１１ａが上向き状態となっている有底円筒状
成形体１１にあっては、その外底部に網１６を敷いて上
方に引き上げた状態としておく。The bottomed cylindrical molded body 11 is mounted on a carriage 14 with a tray 15 interposed, and is transferred to a position near the disposal hole 2 inside the tunnel 8. At this time, in the bottomed cylindrical molded body 11 with the storage hole 11a facing upward, a net 16 is laid on the outer bottom portion thereof and is pulled up.
【００１８】網１６を敷いた状態の有底円筒状成形体１
１は、吊持具１８を網１６に掛けた状態でクレーン１７
を作動させることにより、有底円筒状成形体１１に外傷
を付けることなく吊持することができる。この場合の網
１６は、地層処分時に、緩衝材等に影響を及ぼさないも
のにより作製された網等が適当である。A bottomed cylindrical molded body 1 with a net 16 laid
1 is a crane 17 with a hanging tool 18 hung on the net 16.
By activating, the bottomed cylindrical molded body 11 can be hung without being damaged. In this case, the net 16 is preferably a net made of a material that does not affect the cushioning material or the like during geological disposal.
【００１９】網１６を介在させて吊持した有底円筒状成
形体１１は、図１の鎖線及び矢印で示すように、処分孔
２の中に吊り降ろされる。なお、網１６は、処分孔２の
中に有底円筒状成形体１１等とともに埋設される。The bottomed cylindrical molded body 11 suspended by interposing the net 16 is suspended in the disposal hole 2 as shown by the chain line and arrow in FIG. The net 16 is embedded in the disposal hole 2 together with the bottomed cylindrical molded body 11 and the like.
【００２０】処分孔２に装填した有底円筒状成形体１１
の収納穴１１ａには、別々に搬送した放射能汚染物収納
体Ａが装填収納される。図１にあっては、放射能汚染物
収納体Ａを２段重ね状態に埋設する例を示している。A bottomed cylindrical molded body 11 loaded in the disposal hole 2
Into the storage hole 11a, the separately transported radioactive contaminant storage bodies A are loaded and stored. FIG. 1 shows an example in which the radioactive contaminant container A is embedded in a two-tiered state.
【００２１】最初の放射能汚染物収納体Ａの上に、次の
放射能汚染物収納体Ａを位置合わせ状態に積み重ねてお
く。The next radioactive contaminant container A is stacked on the first radioactive contaminant container A in an aligned state.
【００２２】次いで、上方に突出状態の放射能汚染物収
納体Ａに被せるための有底円筒状成形体１１が搬入され
る。搬送用容器１２の天地を逆にして有底円筒状成形体
１１の収納穴１１ａを下向き状態とするか、予め用意し
ておいた搬送用容器１２を昇降機１３によりトンネル８
の高さまで下降させて、クレーン１７及び吸着盤１９を
作動させて、収納穴１１ａを下向きにした状態の有底円
筒状成形体１１を真空吸着により吊持して、有底円筒状
成形体１１を搬送用容器１２から抜き取り、有底円筒状
成形体１１の外底部を上方に位置させる。Next, the bottomed cylindrical molded body 11 for covering the projecting radioactive contamination container A is carried in upward. The transfer container 12 is turned upside down to make the storage hole 11a of the bottomed cylindrical molded body 11 face downward, or the transfer container 12 prepared in advance is lifted by the elevator 13 to form the tunnel 8
Of the bottomed cylindrical molded body 11 by operating the crane 17 and the suction plate 19 to suspend the bottomed cylindrical molded body 11 with the storage hole 11a facing downward by vacuum suction. Is removed from the transport container 12, and the outer bottom portion of the bottomed cylindrical molded body 11 is positioned above.
【００２３】有底円筒状成形体１１を、上方に突出状態
の放射能汚染物収納体Ａに、図１の矢印で示すように被
せる。同型の有底円筒状成形体１１の収納穴１１ａを向
き合わせ状態にして放射能汚染物収納体Ａを閉塞する
と、放射能汚染物収納体Ａの回りが同質の緩衝材で閉塞
されるとともに、二つの放射能汚染物収納体Ａの接合面
が、高密度状態に圧縮固化した際の成形表面に基づき、
密接状態となってシール性が生じる。なお、処分孔２と
有底円筒状成形体１１との間に生じる間隙Ｇには、細粒
状のベントナイト等の緩衝材を充填する等の処理が行な
われる。The bottomed cylindrical molded body 11 is put on the radioactive contaminant container A projecting upward as shown by the arrow in FIG. When the radioactive contaminant storage container A is closed with the storage holes 11a of the bottomed cylindrical molded body 11 of the same type facing each other, the area around the radioactive contaminant storage container A is closed by the same quality cushioning material, Based on the molding surface when the joint surface of the two radioactive contamination container A is compressed and solidified in a high density state,
It becomes a close state and a sealing property occurs. The gap G formed between the disposal hole 2 and the bottomed cylindrical molded body 11 is subjected to processing such as filling with a cushioning material such as fine-grained bentonite.
【００２４】図２ないし図６は、放射能汚染物収納体Ａ
の地層処分方法の実施態様を示している。2 to 6 show a radioactive contaminant container A.
1 shows an embodiment of the geological disposal method of FIG.
【００２５】図２例は、放射能汚染物収納体Ａが３段に
埋設されるが、その際に、収納穴１１ａを上向きにした
２個の有底円筒状成形体１１の上に、収納穴１１ａを下
向きにした１個の有底円筒状成形体１１を配したもので
ある。In the example shown in FIG. 2, the radioactive contaminant container A is embedded in three steps. At that time, the container is housed on two bottomed cylindrical molded bodies 11 with the housing holes 11a facing upward. One bottomed cylindrical molded body 11 with the hole 11a facing downward is arranged.
【００２６】図３例は、放射能汚染物収納体Ａが３段に
埋設され、最下部の有底円筒状成形体１１が収納穴１１
ａを上向きにして装填されるとともに、網１６を利用し
て埋設される。In the example shown in FIG. 3, the radioactive contaminant container A is buried in three stages, and the bottomed cylindrical molded body 11 at the bottom is a storage hole 11.
It is loaded with a facing upward and is embedded by using the net 16.
【００２７】図４例は、有底円筒状成形体１１の外底部
に、下方に突出した状態の突部１１ｂが配され、該突部
１１ｂが収納穴１１ａに挿入されて、位置合わせと位置
ずれとが図られる。In the example shown in FIG. 4, a protruding portion 11b protruding downward is arranged on the outer bottom portion of the bottomed cylindrical molded body 11, and the protruding portion 11b is inserted into the accommodation hole 11a for alignment and positioning. Deviation is achieved.
【００２８】図５例は、有底円筒状成形体１１の外底部
に、窪部１１ｃが形成され、二つの窪部１１ｃの間にス
ペーサ２１を配することにより、位置合わせと位置ずれ
とが図られる。In the example shown in FIG. 5, a hollow portion 11c is formed in the outer bottom portion of the bottomed cylindrical molded body 11, and a spacer 21 is arranged between the two hollow portions 11c so that alignment and displacement can be prevented. Planned.
【００２９】図６例は、処分孔２が水平状態に形成さ
れ、放射能汚染物収納体Ａが有底円筒状成形体１１に装
填された状態で埋設されるものである。In the example of FIG. 6, the disposal hole 2 is formed in a horizontal state, and the radioactive contaminant storage body A is embedded in the bottomed cylindrical molded body 11 in a loaded state.
【００３０】〔他の実施態様〕本発明に係る放射能汚染
物の地層処分方法及び緩衝材成形体の搬送方法にあって
は、実施例の技術に代えて以下の技術を採用することが
できる。
ａ）一つの有底円筒状成形体１１に複数の放射能汚染物
収納体Ａを収納すること。
ｂ）有底円筒状成形体１１の収納穴１１ａの開口部を、
同質の緩衝材によって形成した蓋等によって閉塞するこ
と。
ｃ）有底円筒状成形体１１における収納穴１１ａの内底
部を利用して、真空吸着により吊持すること。
ｄ）その場合に、収納穴１１ａの回りの端面も真空吸着
すること。
ｅ）収納穴１１ａの内部に拡張具を挿入して有底円筒状
成形体１１を吊持すること。
ｆ）外周面に密接する器具により有底円筒状成形体１１
を吊持すること。[Other Embodiments] In the method of geological disposal of radioactive contaminants and the method of transporting a molded cushioning material according to the present invention, the following technique can be adopted instead of the technique of the embodiment. . a) Storing a plurality of radioactive contaminant storage bodies A in one bottomed cylindrical molded body 11. b) The opening of the storage hole 11a of the bottomed cylindrical molded body 11 is
Block with a lid made of the same quality cushioning material. c) Suspending by vacuum suction using the inner bottom portion of the storage hole 11a in the bottomed cylindrical molded body 11. d) In that case, the end surface around the storage hole 11a should also be vacuum-sucked. e) Inserting an extension tool into the storage hole 11a and suspending the bottomed cylindrical molded body 11. f) bottomed cylindrical molded body 11 by means of a device that closely contacts the outer peripheral surface
To suspend.
【００３１】[0031]
【発明の効果】本発明に係る放射能汚染物の地層処分方
法及び緩衝材成形体の搬送方法によれば、以下の効果を
奏する。
（１） 有底円筒状成形体を処分孔に装填して、その収
納穴に放射能汚染物収納体を装填することにより、緩衝
材と放射能汚染物収納体との双方を別々に搬送して、緩
衝材と放射能汚染物収納体との双方について取り扱い性
を向上させ、これらの組み合わせ作業性を向上させるこ
とができる。
（２） 放射能汚染物収納体の上を同質の緩衝材で閉塞
することにより、放射能汚染物収納体の壁に基づく水の
遮蔽性に加えて、放射能汚染物収納体の密閉性を向上さ
せることができる。
（３） 同型の有底円筒状成形体を組み合わせて使用す
ることにより、成形体の仕様を単純化することができる
とともに、収納穴の開口部を容易に閉塞状態とすること
ができる。
（４） 有底円筒状成形体に放射能汚染物収納体を閉塞
することにより、地層処分時における省力化を図り及び
作業効率を向上させることができる。
（５） 有底円筒状成形体を網で囲んだ状態で吊持して
移送することにより、吊持及び移送作業性を高めること
ができる。
（６） 収納穴を下向きにした状態の有底円筒状成形体
を真空吸着により吊持して移送することにより、移送工
程を単純化することができる。
（７） 搬送用容器内に収納穴を下向きにした状態に有
底円筒状成形体を装填して移送することにより、搬送性
を向上させることができるとともに、移送途中等におけ
る外傷の発生を防止することができるEFFECTS OF THE INVENTION According to the method for disposing the radioactive contaminants in the stratum and the method for transporting the cushioning material molded body according to the present invention, the following effects can be obtained. (1) The bottomed cylindrical molded body is loaded into the disposal hole, and the radioactive contaminant storage body is loaded into the storage hole, so that both the cushioning material and the radioactive contaminant storage body are separately conveyed. Thus, it is possible to improve the handleability of both the cushioning material and the radioactive contaminant storage body, and improve the workability of combining these. (2) By closing the top of the radioactive contamination container with a buffer material of the same quality, in addition to the water shielding property based on the wall of the radioactive contaminant container, the radioactive contaminant container can be sealed. Can be improved. (3) By using the same type of bottomed cylindrical molded body in combination, the specifications of the molded body can be simplified and the opening of the storage hole can be easily closed. (4) By closing the radioactive contaminant container in the bottomed cylindrical molded body, it is possible to save labor and improve work efficiency during geological disposal. (5) By suspending and transporting the bottomed cylindrical molded body in a state of being surrounded by a net, the suspending and transporting workability can be improved. (6) The transfer step can be simplified by suspending and transferring the bottomed cylindrical molded body with the storage hole facing downward by vacuum suction. (7) By loading and transporting the bottomed cylindrical molded body with the storage hole facing downward in the transport container, transportability can be improved and external damage during transport can be prevented. can do
【図１】本発明に係る放射能汚染物の地層処分方法を適
用した工程例の状況説明図である。FIG. 1 is a situation explanatory view of an example of a process to which a method for geological disposal of radioactive contaminants according to the present invention is applied.
【図２】本発明に係る放射能汚染物の地層処分方法にお
いて、放射能汚染物収納体を３段に埋設しかつ最上部の
有底円筒状成形体を下向きにした例を示す正断面図であ
る。FIG. 2 is a front cross-sectional view showing an example in which the radioactive contamination container is buried in three stages and the uppermost bottomed cylindrical molded body faces downward in the method for geological disposal of radioactive contaminants according to the present invention. Is.
【図３】本発明に係る放射能汚染物の地層処分方法にお
いて、放射能汚染物収納体を３段に埋設しかつ網を利用
して最下部の有底円筒状成形体を装填した例を示す正断
面図である。FIG. 3 is an example in which the radioactive contaminant container according to the present invention is embedded in three stages of radioactive contaminants and a bottomed cylindrical molded body is loaded using a net. FIG.
【図４】本発明に係る放射能汚染物の地層処分方法にお
いて、有底円筒状成形体の外底部に突部を配した示す正
断面図である。FIG. 4 is a front cross-sectional view showing a projecting portion arranged on the outer bottom portion of a bottomed cylindrical molded body in the method for geological disposal of radioactive contaminants according to the present invention.
【図５】本発明に係る放射能汚染物の地層処分方法にお
いて、有底円筒状成形体の外底部に窪部を形成しスペー
サを配した例を示す正断面図である。FIG. 5 is a front cross-sectional view showing an example in which a hollow portion is formed in the outer bottom portion of a bottomed cylindrical molded body and a spacer is arranged in the method for geological disposal of radioactive contaminants according to the present invention.
【図６】本発明に係る放射能汚染物の地層処分方法にお
いて、水平状態の処分孔に放射能汚染物収納体を埋設し
た例を示す正断面図である。FIG. 6 is a front cross-sectional view showing an example in which a radioactive contaminant container is buried in a horizontal disposal hole in the method for geological disposal of radioactive contaminants according to the present invention.
【図７】地層処分の従来例を示す正断面図である。FIG. 7 is a front sectional view showing a conventional example of geological disposal.
Ａ 放射能汚染物収納体（放射性物質収納体）
１ 岩盤（母岩）
２ 処分孔
Ｇ 間隙
８ トンネル
９ 縦坑
１１ 放射能汚染物地層処分用緩衝材成形体（有底円筒
状成形体：緩衝材成形体）
１１ａ 収納穴
１１ｂ 突部
１１ｃ 窪部
１２ 搬送用容器
１２ａ 上蓋
１３ 昇降機
１４ 台車
１５ トレイ
１６ 網
１７ クレーン
１８ 吊持具
１９ 吸着盤
２１ スペーサA Radioactive contaminant storage (radioactive substance storage) 1 Rock (host rock) 2 Disposal hole G Gap 8 Tunnel 9 Vertical shaft 11 Radioactive pollutant geological disposal buffer molded body (bottomed cylindrical molded body: buffer) Material forming body) 11a Storage hole 11b Projection 11c Recess 12 Container 12a for transport 12 Upper lid 13 Elevator 14 Cart 15 Tray 16 Net 17 Crane 18 Lifting tool 19 Suction board 21 Spacer
───────────────────────────────────────────────────── フロントページの続き (73)特許権者 000213297 中部電力株式会社 愛知県名古屋市東区東新町１番地 (73)特許権者 000156938 関西電力株式会社 大阪府大阪市北区中之島３丁目３番22号 (73)特許権者 000211307 中国電力株式会社 広島県広島市中区小町４番33号 (73)特許権者 000180368 四国電力株式会社 香川県高松市丸の内２番５号 (73)特許権者 000164438 九州電力株式会社 福岡県福岡市中央区渡辺通２丁目１番82 号 (73)特許権者 000230940 日本原子力発電株式会社 東京都千代田区神田美土代町１番地１ (73)特許権者 594149479 株式会社シー・アール・エス 東京都千代田区神田司町２丁目10番地12 (73)特許権者 000006264 三菱マテリアル株式会社 東京都千代田区大手町１丁目５番１号 (72)発明者 赤坂 秀成 東京都千代田区内幸町一丁目１番３号 東京電力株式会社内 (72)発明者 志村 聡 東京都千代田区内幸町一丁目１番３号 東京電力株式会社内 (72)発明者 朝野 英一 東京都江東区豊洲三丁目２番16号 石川 島播磨重工業株式会社 豊洲総合事務所 内 (72)発明者 山形 順二 東京都江東区豊洲三丁目２番16号 石川 島播磨重工業株式会社 豊洲総合事務所 内 (72)発明者 二宮 伸雄 東京都江東区豊洲三丁目１番15号 石川 島播磨重工業株式会社 技術研究所内 (72)発明者 川上 進 東京都江東区豊洲三丁目１番15号 石川 島播磨重工業株式会社 技術研究所内 (56)参考文献 特開 平２−145998（ＪＰ，Ａ) 特開 昭61−201200（ＪＰ，Ａ) 特開 平７−174894（ＪＰ，Ａ) 菅野毅，高レベル放射性廃棄物地層処 分用一体型緩衝材の制作ハンドリング技 術の開発，平成14年度火力原子力発電大 会研究発表要旨集，日本，（社）火力原 子力発電技術協会，2002年 ９月25日, 120−121頁 (58)調査した分野(Int.Cl.7，ＤＢ名) G21F 9/36 ─────────────────────────────────────────────────── ─── Continuation of front page (73) Patent holder 000213297 Chubu Electric Power Co., Inc. 1 Higashishinmachi, Higashi-ku, Nagoya, Aichi (73) Patent holder 000156938 Kansai Electric Power Co., Inc. No. (73) Patent holder 000211307 Chugoku Electric Power Co., Inc. 4-33 Komachi, Naka-ku, Hiroshima City, Hiroshima Prefecture (73) Patent holder 000180368 Shikoku Electric Power Co., Inc. 2-5 Marunouchi, Takamatsu City, Kagawa Prefecture (73) Patent holder 000164438 Kyushu Electric Power Co., Inc. 2-82 Watanabe-dori, Chuo-ku, Fukuoka-shi, Fukuoka (73) Patent holder 000230940 Japan Nuclear Power Co., Ltd. 1 1 Kanda Mitoshiro-cho, Chiyoda-ku, Tokyo (73) Patent holder 594149479 Shares CRS Co., Ltd. 2-10-10 Kandaji-cho, Chiyoda-ku, Tokyo 12 (73) Patent holder 000006264 Mitsubishi Materials Corporation Chiyoda, Tokyo Otemachi 1-5-1 (72) Inventor Hidenari Akasaka 1-3-3 Uchiyuki-cho, Chiyoda-ku, Tokyo Tokyo Electric Power Company (72) Inventor Satoshi Shimura 1-3-1 Uchisai-cho, Chiyoda-ku, Tokyo Tokyo Electric Power Co., Ltd. (72) Inventor Eiichi Asano 3-2-16 Toyosu, Koto-ku, Tokyo Ishikawa Shimaharima Heavy Industries Co., Ltd. Toyosu General Office (72) Inventor Junji Yamagata 3-2, Toyosu, Koto-ku, Tokyo No. 16 Ishikawa Shima-Harima Heavy Industries Co., Ltd.Toyosu General Office (72) Inventor Nobuo Ninomiya 3-1-1, Toyosu, Koto-ku, Tokyo Ishikawa Shima Harima Heavy Industries Co., Ltd. Technical Research Institute (72) Inventor Susumu Kawakami Tokyo 3-15-15 Toyosu, Koto-ku Ishikawa Shima Harima Heavy Industries Co., Ltd. Technical Research Institute (56) Reference JP-A 2-145998 (JP, A) JP-A 61-201200 (JP, A) JP-A 7- 174894 (JP, A) Takeshi Sugano, Handbook of integrated cushioning material for geological treatment of high-level radioactive waste Technology development, Proceedings of the 2002 Thermal Power Nuclear Power Society Conference, Japan, Japan Thermal Power Generation Technology Association, September 25, 2002, 120-121 (58) Fields investigated ( Int.Cl. 7 , DB name) G21F 9/36
Claims (3)
た処分孔に密封状態に埋設する方法であって、遮水性を有する緩衝材 を高密度状態に圧縮固化してなる
有底円筒状成形体を処分孔に装填する工程と、 有底円筒状成形体の収納穴に放射能汚染物収納体を装填
する工程と、 同型の有底円筒状成形体の収納穴を向き合わせ状態にし
て放射能汚染物収納体を閉塞する工程とを有することを
特徴とする放射能汚染物の地層処分方法。1. A method of burying a radioactive pollutant container in a disposal hole formed by excavation in the ground in a sealed state, wherein a bottomed cylinder obtained by compressing and solidifying a cushioning material having a water blocking property in a high density state. Of the cylindrical shaped body with the bottom of the same shape and the step of loading the radioactive contaminant storage body with the storage hole of the cylindrical body with the bottom, and the storage hole of the cylindrical body with the bottom of the same type facing each other. And a step of closing the radioactive pollutant container, the method for geological disposal of radioactive pollutants.
た処分孔に密封状態に埋設する際に使用される緩衝材を
搬送する方法であって、遮水性を有する 緩衝材を高密度状態に圧縮固化して収納
穴を有する有底円筒状成形体を成形するとともに、搬送
用容器内に有底円筒状成形体を収容したまま移送し、搬
送用容器の天地を逆にして、搬送用容器を有底円筒状成
形体から抜き取り有底円筒状成形体の外底部を上方に位
置させて真空吸着により吊持することを特徴とする放射
能汚染物地層処分用緩衝材成形体の搬送方法。2. A method of transporting a cushioning material used for burying a radioactive contaminant container in a disposal hole formed by excavation in the ground in a sealed state, wherein the cushioning material having a water-blocking property is dense. It is compressed and solidified into a state to form a bottomed cylindrical molded body with a storage hole, and it is transferred while the bottomed cylindrical molded body is stored in the transfer container, and the top and bottom of the transfer container are reversed, and the transfer is performed. Transporting a buffer material molded body for geological disposal of radioactive pollutants characterized by extracting the container for bottom from the bottomed cylindrical molded body and suspending it by vacuum adsorption with the outer bottom part of the bottomed cylindrical molded body positioned above Method.
た処分孔に密封状態に埋設する際に使用される緩衝材を
搬送する方法であって、遮水性を有する 緩衝材を高密度状態に圧縮固化して収納
穴を有する有底円筒状成形体を成形するとともに、搬送
用容器内に収納穴を下向きにした状態に有底円筒状成形
体を装填し、搬送用容器内に有底円筒状成形体を収容し
たまま移送することを特徴とする放射能汚染物地層処分
用緩衝材成形体の搬送方法。3. A method of transporting a cushioning material used for burying a radioactive pollutant container in a disposal hole formed by excavation in the ground in a sealed state, wherein the cushioning material having a water-blocking property has a high density. It is compressed and solidified to form a bottomed cylindrical molded body having a storage hole, and the bottomed cylindrical molded body is loaded into the container for transportation with the storage hole facing downward, and the container is provided in the container for transportation. A method for transporting a cushioning material molded body for geological disposal of radioactive contaminants, characterized in that the bottomed cylindrical molded body is transferred while being housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31982293A JP3370756B2 (en) | 1993-12-20 | 1993-12-20 | Method for geological disposal of radioactive contaminants and method for transporting buffer material compacts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31982293A JP3370756B2 (en) | 1993-12-20 | 1993-12-20 | Method for geological disposal of radioactive contaminants and method for transporting buffer material compacts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07174893A JPH07174893A (en) | 1995-07-14 |
| JP3370756B2 true JP3370756B2 (en) | 2003-01-27 |
Family
ID=18114599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31982293A Expired - Fee Related JP3370756B2 (en) | 1993-12-20 | 1993-12-20 | Method for geological disposal of radioactive contaminants and method for transporting buffer material compacts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3370756B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2921509B1 (en) * | 2007-09-21 | 2014-11-21 | Areva Np | COMBUSTIBLE ASSEMBLY FOR FAST NEUTRON NUCLEAR REACTOR |
| JP4533961B2 (en) * | 2009-02-23 | 2010-09-01 | 三菱重工業株式会社 | Radioactive waste storage container gripping device |
| JP6396143B2 (en) * | 2014-09-23 | 2018-09-26 | 前田建設工業株式会社 | Equipment for dewatering and solidifying sludge containing radioactive materials |
| JP2016217028A (en) * | 2015-05-21 | 2016-12-22 | 清水建設株式会社 | Method and structure for filling water-swellable clay |
-
1993
- 1993-12-20 JP JP31982293A patent/JP3370756B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 菅野毅，高レベル放射性廃棄物地層処分用一体型緩衝材の制作ハンドリング技術の開発，平成１４年度火力原子力発電大会研究発表要旨集，日本，（社）火力原子力発電技術協会，２００２年 ９月２５日，１２０−１２１頁 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07174893A (en) | 1995-07-14 |
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