JP2006289245A - Reclamation facility - Google Patents

Reclamation facility Download PDF

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JP2006289245A
JP2006289245A JP2005112492A JP2005112492A JP2006289245A JP 2006289245 A JP2006289245 A JP 2006289245A JP 2005112492 A JP2005112492 A JP 2005112492A JP 2005112492 A JP2005112492 A JP 2005112492A JP 2006289245 A JP2006289245 A JP 2006289245A
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water
gas
facility
shielding layer
waste
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JP4552134B2 (en
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Taku Ishii
卓 石井
Hitoshi Nakajima
均 中島
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Shimizu Construction Co Ltd
Shimizu Corp
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Shimizu Construction Co Ltd
Shimizu Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a reclamation facility being easy to construct and capable of retaining a barrier function over a long period from the beginning and having an origin for escape of gas. <P>SOLUTION: The reclamation facility 11 is constructed in the foundation involving ground water and is for reclaiming waste 12 in its inside. The facility is composed of an only slightly water-permeable water-shielding layer 14, and two or more porous members 21 are arranged on the inside surface of the water-shielding layer 14. Since the porous members ensure progression of a pulsating invasion phenomenon of the gas area into the water-shielding layer, gas permeates through the only slightly water-permeable water-shielding layer 14 under lower pressure. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、施工が容易でバリア機能を当初から長期に亙って維持できると共に、ガスの逃げ道の起点を備えた埋設処分施設に関する。   The present invention relates to a buried disposal facility that is easy to construct and can maintain a barrier function for a long period from the beginning, and has a starting point for gas escape.

近年における最大のテーマは、社会産業の発展における結果としての産業廃棄物や一般廃棄物を埋め立てるための廃棄物処分施設の設置、さらには、原子力発電における高、低レベルの放射性廃棄物に関する数百年以上に及ぶ廃棄物の処置を社会生活に障害を与えることなく如何に処理するかである。   The biggest theme in recent years has been the establishment of waste disposal facilities to landfill industrial and municipal waste as a result of social industry development, and hundreds of high and low levels of radioactive waste in nuclear power generation. It is how to deal with waste disposal over more than a year without causing any obstacle to social life.

産業廃棄物や一般廃棄物を埋め立てるための処分施設では、産業廃棄物が人間の生活環境に影響を与えないようにするために、そこからの漏出汚水が地下に浸透することで環境汚染を引き起こさないように処置することが義務付けられており、地下に埋設することが種々提案されている。   In a disposal facility for reclaiming industrial waste and general waste, in order to prevent industrial waste from affecting the human living environment, the leaked sewage from it penetrates underground and causes environmental pollution. It is obliged to treat them so that they are buried under the ground.

放射性廃棄物を地下に埋設するための施設では地下水の流れが遅い良好な地層中に埋設すること、および廃棄物の周囲を例えばベントナイト等の難透水性材料で取り囲み、地下水の浸入および汚水地下水の施設外への漏出を抑制することが求められており、種々の提案がなされている(特許文献1、特許文献2)。   In a facility for burying radioactive waste underground, bury it in a good formation where the flow of groundwater is slow, and surround the waste with a hardly permeable material such as bentonite, and infiltrate groundwater and sewage groundwater It is required to suppress leakage outside the facility, and various proposals have been made (Patent Document 1, Patent Document 2).

このようなベントナイト等の難透水性材料を用いてなる遮水層を設けた施設の一例を図3に示す。図4では、地盤中に埋設する施設の概略であり、地下水位1以下の場所に支保工2の内部に難透水性の遮水層3が形成され、その内側に廃棄物4が設けられている。前記廃棄物4と遮水層3との間には透水性の例えばコンクリート等の充填材5が充填されている。   An example of a facility provided with a water-impervious layer using such a poorly water-permeable material as bentonite is shown in FIG. In FIG. 4, it is the outline of the facility embed | buried in the ground, the impervious impermeable layer 3 is formed in the inside of the support 2 in the place below the groundwater level 1, and the waste 4 is provided in the inside. Yes. Between the waste 4 and the water shielding layer 3, a water-permeable filler 5 such as concrete is filled.

特開2003−211113号公報JP 2003-211113 A 特開2003−255087号公報JP 2003-255087 A

このような施設においては、埋設する廃棄物の中には長期間の嫌気性腐食によって微量ではあるが水素ガスを発生する。あるいは廃棄物4が放射性廃棄物の場合には、該廃棄物の周囲の水が放射分解を生じて、水素ガスを発生する。これらの水素ガス等のガスが施設内部に蓄積するとガス圧上昇によって施設構造が破壊されるおそれが想定されるので、ガス圧が低い段階で施設外部へ開放することが望ましい。   In such a facility, a small amount of hydrogen gas is generated in the buried waste due to long-term anaerobic corrosion. Alternatively, when the waste 4 is a radioactive waste, water around the waste undergoes radiolysis and generates hydrogen gas. If gas such as hydrogen gas accumulates inside the facility, there is a possibility that the structure of the facility may be destroyed due to an increase in gas pressure, so it is desirable to open it to the outside of the facility when the gas pressure is low.

また、ベントナイト系の難透水性材料は不飽和状態ではガスを透気するものの、ひとたび地下水で飽和してしまうと、材料の有する膨潤圧を上回るガス圧が作用するまではガスを透過しない性質を有している。この結果として、高い圧力のガスが施設内部に蓄積することとなり、やがては施設の遮水層のバリア構造を破壊してしまうおそれがある。   In addition, although bentonite-based poorly permeable materials allow gas to pass through in an unsaturated state, once saturated with groundwater, they do not transmit gas until a gas pressure exceeding the swelling pressure of the material is applied. Have. As a result, high-pressure gas accumulates inside the facility, which may eventually destroy the barrier structure of the water shielding layer of the facility.

ところで、前記特許文献1では、遮水性を向上させるために、粘土材料中の空気を排出し、水を圧密充填することが提案されているが、粘土に水を含有させると結果として、粘土の均一層を形成した遮水材とすることで、遮水性の向上を図ることができるものの、遮水機能が堅牢なため、透気性が備わっていないので、廃棄物内部で発生したガスを開放することができない、という問題が発生する。   By the way, in the said patent document 1, in order to improve water shielding, it is proposed to discharge | emit the air in a clay material, and to carry out the consolidation filling of water, but when water is contained in clay, as a result, as a result of clay Although it is possible to improve water shielding by using a water shielding material that forms a uniform layer, the water shielding function is robust and air permeability is not provided, so the gas generated inside the waste is released. The problem of not being able to occur.

よって、ガス圧の比較的低い段階で施設外部へガスを効率的に開放することが望まれている。   Therefore, it is desired to efficiently release the gas to the outside of the facility at a relatively low gas pressure.

本発明は、上記実情に鑑みて、施工が容易でバリア機能を当初から長期に亙って維持できると共に、ガスの逃げ道の起点を備えた埋設処分施設を提供することを課題とする。   In view of the above circumstances, it is an object of the present invention to provide a buried disposal facility that is easy to construct and can maintain a barrier function for a long time from the beginning, and has a starting point for gas escape.

上記の課題を達成する第1の発明は、地下水の存在する地盤中に設けられ、内部に廃棄物を埋設処分する施設であって、前記施設が難透水性の遮水層で形成されてなり、前記遮水層内面に1又は2以上のポーラス部材が設けられてなることを特徴とする埋設処分施設にある。   1st invention which achieves said subject is provided in the ground where groundwater exists, and is a facility which embeds and disposes waste inside, and the said facility is formed with a non-permeable impermeable layer. In the buried disposal facility, one or more porous members are provided on the inner surface of the water shielding layer.

第2の発明は、第1の発明において、前記ポーラス部材の形状が、くさび状、板状、テーパ形状、略H型状のいずれかであることを特徴とする埋設処分施設にある。   According to a second aspect of the invention, in the first aspect of the invention, the shape of the porous member is any one of a wedge shape, a plate shape, a tapered shape, and a substantially H shape.

第3の発明は、第1又は2の発明において、前記ポーラス部材が、砥石、軽石、金属焼結材料、セラミックス、岩石、砂礫、粒状ガラスのいずれかであることを特徴とする埋設処分施設にある。   A third invention provides the buried disposal facility according to the first or second invention, wherein the porous member is any one of a grindstone, a pumice stone, a metal sintered material, a ceramic, a rock, a gravel, and a granular glass. is there.

第4の発明は、第1乃至3のいずれか一つの発明において、前記難透水性の遮水層が高密度ベントナイト又はベントナイト混合土であることを特徴密度ベントナイトであることを特徴とする埋設処分施設にある。   A fourth invention is characterized in that, in any one of the first to third inventions, the hardly water-permeable impermeable layer is a high density bentonite or bentonite mixed soil, which is a characteristic density bentonite. In the facility.

第5の発明は、第1乃至4のいずれか一つの発明において、前記廃棄物と遮水層との間に透水性の充填材が充填されてなることを特徴とする埋設処分施設にある。   A fifth invention is an embedded disposal facility according to any one of the first to fourth inventions, wherein a water-permeable filler is filled between the waste and the water shielding layer.

第6の発明は、第1乃至5のいずれか一つの発明において、前記遮水層の内側に接する形状で薄膜構造の透水性・透気性を有する材料が設置されてなることを特徴とする埋設処分施設にある。   A sixth invention is characterized in that, in any one of the first to fifth inventions, a material having water permeability and gas permeability of a thin film structure is installed in a shape in contact with the inside of the water shielding layer. Located at disposal facility.

本発明に係る埋設処分施設によれば、ポーラス部材が遮水層の内側に配されているので、該ポーラス部材がガス透気経路の起点となり、遮水層への脈状侵入現象が確実に進展する。この結果、内部のガス圧が比較的低い圧力において、難透水性の遮水層を破過することができる。   According to the buried disposal facility according to the present invention, since the porous member is arranged inside the impermeable layer, the porous member serves as a starting point of the gas permeation path, and the pulmonary intrusion phenomenon to the impermeable layer is surely performed. Progress. As a result, it is possible to break through the water-impermeable layer having poor water permeability at a relatively low internal gas pressure.

以下に添付図面を参照して、本発明に係る埋設処分施設の好適な実施例を詳細に説明する。なお、この実施例によりこの発明が限定されるものではない。   Exemplary embodiments of a buried disposal facility according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments.

図1は本発明に係る埋設処分施設の概略図である。
図1に示すように、本実施例にかかる埋設処分施設11は、地下水の存在する地盤中に設けられ、内部に廃棄物12を埋設処分する施設であって、前記施設が難透水性の遮水層14で形成されてなり、前記遮水層14内面に複数(本実施例では7個)のポーラス部材21が設けられてなるものである。なお、本実施例では、廃棄物12と遮水層14との間に透水性の例えばコンクリート等の充填材13が充填されている。
FIG. 1 is a schematic view of a buried disposal facility according to the present invention.
As shown in FIG. 1, an embedding disposal facility 11 according to the present embodiment is a facility that is provided in the ground where groundwater is present and in which waste 12 is disposed and disposed therein. A plurality of (seven in this embodiment) porous members 21 are provided on the inner surface of the water shielding layer 14. In the present embodiment, a water-permeable filler 13 such as concrete is filled between the waste 12 and the water shielding layer 14.

本実施例では、前記ポーラス部材21の形状として、くさび状としているが、本発明はこれに限定されるものではなく、例えば板状、テーパ形状、略H型状等のガス侵入のトリガーとなるような形状であれば、いずれの形状とすることができる。   In the present embodiment, the shape of the porous member 21 is a wedge shape, but the present invention is not limited to this, and serves as a trigger for gas intrusion such as a plate shape, a taper shape, and a substantially H shape. If it is such a shape, it can be set as any shape.

また、前記ポーラス部材21の大きさは特に限定されるものではないが、例えば50〜100cm程度の遮水層14に打ち込む場合には、約3〜10cm程度とすればよい。これはあまり大きくなると難透水層の厚さが短くなり、遮水効果が低下することになるからである。   Further, the size of the porous member 21 is not particularly limited. For example, when the porous member 21 is driven into the water shielding layer 14 of about 50 to 100 cm, it may be about 3 to 10 cm. This is because if the thickness is too large, the thickness of the poorly permeable layer is shortened and the water shielding effect is reduced.

また、前記ポーラス部材21の材質としては、例えば砥石、軽石、金属焼結材料、セラミックス、岩石等を挙げることができるが、砂礫や粒状ガラスのようにガス透過性の良好な材質で且つ数百年以上安定な材料であればいずれでもよい。   Examples of the material of the porous member 21 include grindstones, pumice stones, sintered metal materials, ceramics, rocks, and the like. The material has good gas permeability, such as gravel and granular glass, and several hundreds. Any material can be used as long as it is stable for more than a year.

なお、本実施例では、ポーラス部材21の配置は帯状形状で遮水層の内側に複数設置するようにしているが、本発明はこれに限定されるものではなく、内部の廃棄物の容積に応じて1又は2以上とすればよい。また、帯状ではなく円錐形状等でもよい。   In the present embodiment, the porous member 21 is arranged in a band shape and a plurality of porous members 21 are disposed inside the water shielding layer. However, the present invention is not limited to this, and the volume of waste inside is limited. Depending on the case, it may be 1 or 2 or more. In addition, a conical shape or the like may be used instead of the belt shape.

また、前記難透水性の遮水層14としては、高密度ベントナイトを例示することができる。   Moreover, as the said hardly water-permeable impermeable layer 14, a high density bentonite can be illustrated.

ここで、本発明における遮水層14を構成するベントナイトは難透水性材料であり、局部的に高透水な欠陥部分を設けずにスムースにガスを開放することができれば理想的である。難透水層に適した例えば密度1600kg/m3級のベントナイトでは低圧でガスが破過することは期待しにくく、材料に局部的に存在する弱部をねらってガスが侵入する現象を期待することになる。ガス透気経路として期待できる部分は非常に限られた局部であり、かつその透気経路は確率的に発生する現象である。本発明のように遮水層14の内面にポーラス部材21を設けることにより、確実にガス透気のための起点を構成することになる。 Here, the bentonite constituting the water-impervious layer 14 in the present invention is a hardly water-permeable material, and it is ideal if the gas can be smoothly released without providing a highly water-permeable defective portion locally. It is the example density 1600 kg / m 3 grade bentonite suitable impermeable layer to breakthrough gas at low pressure is difficult to expect, it is expected a phenomenon that gas aimed at weak portions exist locally in the material enters become. A portion that can be expected as a gas permeation path is a very limited local part, and the air permeation path is a phenomenon that occurs stochastically. By providing the porous member 21 on the inner surface of the water-impervious layer 14 as in the present invention, a starting point for gas permeation is surely configured.

図2にこの脈状侵入現象(トリガー現象)の概略を示す。図2は図1のA部の拡大を示すものであり、同図に示すように、遮水層14の内面にポーラス部材21が設けられている。このポーラス部材21の部分にガス22が到達するとポーラス部材21の内部に侵入する。その結果、遮水層14内部に打ち込まれたポーラス部材21の先端部分からガスの脈状経路23が形成される。その後、内部のガス量が増大することでこの脈状経路23は進展し、ついには遮水層14を突き抜けることとなり、外部へガス22が開放される。
なお、ガス22が抜けきると内圧が低下し、外部から地下水が脈状経路23内に浸入し、ベントナイトが膨潤して自己シールすることになる。その結果、遮水層14の自己修復作用により、外部からの水の浸入が防止されることになる。
FIG. 2 shows an outline of the pulse intrusion phenomenon (trigger phenomenon). FIG. 2 shows an enlargement of the portion A in FIG. 1, and as shown in the figure, a porous member 21 is provided on the inner surface of the water shielding layer 14. When the gas 22 reaches the porous member 21, the gas 22 enters the porous member 21. As a result, a gas pulse path 23 is formed from the tip of the porous member 21 driven into the water shielding layer 14. Thereafter, as the amount of the internal gas increases, the vein path 23 develops and finally penetrates the water shielding layer 14 to release the gas 22 to the outside.
When the gas 22 is exhausted, the internal pressure is reduced, and groundwater enters the vein path 23 from the outside, and the bentonite swells and self-seals. As a result, the self-repairing action of the water shielding layer 14 prevents water from entering from the outside.

このように、くさび形状のポーラス部材21が存在すると廃棄物およびその周囲から発生したガスは容易にポーラス部材まで移動する。該ポーラス部材21に接している遮水層のベントナイトにはガス圧が作用する。このとき、ガス圧がベントナイト材料に引張り応力を発生させながらガス脈状侵入の先端部のベントナイトに分け入り、侵入を促進することになる。この結果、ベントナイトへのガス領域の脈状侵入現象は確実に進展する。   Thus, when the wedge-shaped porous member 21 exists, the waste and the gas generated from the surroundings easily move to the porous member. A gas pressure acts on the bentonite of the water shielding layer in contact with the porous member 21. At this time, the gas pressure enters the bentonite at the front end portion of the gas vein intrusion while generating a tensile stress in the bentonite material, thereby promoting the intrusion. As a result, the pulsating invasion phenomenon of the gas region into bentonite is surely progressed.

ここで、遮水層14の材料であるベントナイトへのガス破過現象は、ベントナイトと水で構成されている粘塑性材料を、ガスが微小破壊もしくは粘性破壊させながら脈状に侵入していく現象であると想定されている(穂刈、沖原他、「ベントナイト混合土の透気特性における寸法効果について」、放射性廃棄物研究、VOl.No.2、p97.1997)。すなわち、遮水層14はベントナイトと水との一体化物であるが、ベントナイト粘塑性材料がガスの圧力によって三次元的網目状に広がって排除され、押し出され、その結果、微量のガスが透気することとなる。   Here, the gas breakthrough phenomenon to bentonite which is the material of the water shielding layer 14 is a phenomenon in which a gas penetrates into a viscoplastic material composed of bentonite and water while causing the gas to undergo microfracture or viscous fracture. (Hokari, Okihara et al., “On the effect of size on the air permeability of bentonite mixed soil”, Research on radioactive waste, Vol. No. 2, p97.1997). In other words, the water shielding layer 14 is an integrated product of bentonite and water, but the bentonite viscoplastic material is removed in a three-dimensional network by the pressure of the gas, and is pushed out. As a result, a small amount of gas is permeated. Will be.

よって、本発明によりこの脈状経路の形成のためのトリガーとして遮水層14の内面にポーラス部材21を配置することにより、遮水層14へのガス領域の脈状侵入現象が確実に進展するので、より低圧でガスは難透水性の遮水層14を破過することになる。
すなわち、遮水層14は地下をゆっくり流れる地下水程度の動水勾配では、該地下水は施設内部をほとんど透過せず、施設内部に蓄えられてガス圧の圧力が高まった時点ではガスはスムースに開放されるという、極めて優れた機能を発揮することになる。
Therefore, by arranging the porous member 21 on the inner surface of the water shielding layer 14 as a trigger for the formation of this vein path according to the present invention, the phenomenon of the pulse invasion of the gas region into the water shielding layer 14 is surely progressed. Therefore, at a lower pressure, the gas breaks through the impermeable layer 14 which is hardly permeable.
That is, the impermeable layer 14 has a hydrodynamic gradient similar to that of groundwater that slowly flows through the ground, and the groundwater hardly permeates the inside of the facility, and the gas is smoothly opened when it is stored inside the facility and the gas pressure increases. It will exhibit an extremely excellent function.

また、図1において充填物13が透水性及び透気性を有しているならば、廃棄物の限られた一箇所から発生したガスであっても複数のポーラス材21にガスを導くので、ガスのスムースな開放はより確実に生じることとなる。   In addition, in FIG. 1, if the filling 13 has water permeability and gas permeability, even gas generated from one limited place of waste leads gas to the plurality of porous materials 21. Smooth opening of this will occur more reliably.

仮に充填物13が局部的な透気経路のみを提供する材料特性を有する場合(例えば充填モルタルの打継ぎ目のような部位のみを透気する場合等)には、図3に示すように、透水層14の内側に接する形状で薄膜構造の透水性・透気性を有する膜状材料24を設置させるようにすることで、同様の効果を生じさせることができる。   If the filler 13 has a material characteristic that provides only a local air passage (for example, when air is passed through only a portion such as a seam of a filling mortar), as shown in FIG. The same effect can be produced by installing the film-like material 24 having a thin film structure and water permeability / air permeability in a shape in contact with the inside of the layer 14.

以上のように、本発明に係る埋設処分施設によれば、ポーラス部材が遮水層の内側に配されているので、遮水層へのガスの脈状侵入現象が確実に進展でき、地下に廃棄物を埋設する施設に適用することに適している。   As described above, according to the buried disposal facility according to the present invention, since the porous member is arranged inside the impermeable layer, the gas-like invasion phenomenon of the gas to the impermeable layer can surely progress, and the underground It is suitable for use in facilities where waste is buried.

本実施例にかかる埋設処分施設の概略構成図である。It is a schematic block diagram of the buried disposal facility concerning a present Example. 脈状侵入現象を示す模式図である。It is a schematic diagram which shows a venous penetration phenomenon. 本実施例にかかる他の埋設処分施設の概略構成図である。It is a schematic block diagram of the other buried disposal facility concerning a present Example. 従来の埋設処分施設の概略構成図である。It is a schematic block diagram of the conventional buried disposal facility.

符号の説明Explanation of symbols

11 埋設処分施設
12 廃棄物
13 充填物
14 遮水層
21 ポーラス部材
22 ガス
23 脈状経路
24 膜状材料
DESCRIPTION OF SYMBOLS 11 Burial disposal facility 12 Waste 13 Filling 14 Water-impervious layer 21 Porous member 22 Gas 23 Vein path 24 Membrane material

Claims (6)

地下水の存在する地盤中に設けられ、内部に廃棄物を埋設処分する施設であって、
前記施設が難透水性の遮水層で形成されてなり、前記遮水層内面に1又は2以上のポーラス部材が設けられてなることを特徴とする埋設処分施設。
It is a facility that is installed in the ground where groundwater exists, and buryes waste inside.
The buried disposal facility, wherein the facility is formed of a hardly water-permeable impermeable layer, and one or more porous members are provided on the inner surface of the impermeable layer.
請求項1において、
前記ポーラス部材の形状が、くさび状、板状、テーパ形状、略H型状のいずれかであることを特徴とする埋設処分施設。
In claim 1,
The buried disposal facility, wherein the porous member has a wedge shape, a plate shape, a tapered shape, or a substantially H shape.
請求項1又は2において、
前記ポーラス部材が、砥石、軽石、金属焼結材料、セラミックス、岩石、砂礫、粒状ガラスのいずれかであることを特徴とする埋設処分施設。
In claim 1 or 2,
The buried disposal facility, wherein the porous member is any one of a grindstone, a pumice stone, a metal sintered material, ceramics, rocks, gravel, and granular glass.
請求項1乃至3のいずれか一つにおいて、
前記難透水性の遮水層が高密度ベントナイト又はベントナイト混合土であることを特徴とする埋設処分施設。
In any one of Claims 1 thru | or 3,
The buried disposal facility, wherein the hardly water-permeable impermeable layer is high-density bentonite or bentonite mixed soil.
請求項1乃至4のいずれか一つにおいて、
前記廃棄物と遮水層との間に透水性の充填材が充填されてなることを特徴とする埋設処分施設。
In any one of Claims 1 thru | or 4,
A buried disposal facility, wherein a water-permeable filler is filled between the waste and the water shielding layer.
請求項1乃至5のいずれか一つにおいて、
前記遮水層の内側に接する形状で薄膜構造の透水性・透気性を有する材料が設置されてなることを特徴とする埋設処分施設。
In any one of Claims 1 thru | or 5,
A buried disposal facility, wherein a material having water permeability and gas permeability of a thin film structure is installed in a shape in contact with the inner side of the water shielding layer.
JP2005112492A 2005-04-08 2005-04-08 Buried disposal facility Expired - Fee Related JP4552134B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008100154A (en) * 2006-10-18 2008-05-01 Shimizu Corp Gas-permeable passage member for reclamation facility and reclamation facility

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02253197A (en) * 1989-03-27 1990-10-11 Ishikawajima Harima Heavy Ind Co Ltd Waste housing container and method for housing waste
JP2002214393A (en) * 2001-01-12 2002-07-31 Ohbayashi Corp Radioactive waste disposing facility
JP2003010808A (en) * 2001-07-02 2003-01-14 Shimizu Corp Waste disposal facilities
JP2003177198A (en) * 2001-12-12 2003-06-27 Mitsubishi Heavy Ind Ltd Cement solidified body storage container and lid used therefor
JP2005017060A (en) * 2003-06-25 2005-01-20 Mitsubishi Heavy Ind Ltd Bentonite member and method for installing it

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02253197A (en) * 1989-03-27 1990-10-11 Ishikawajima Harima Heavy Ind Co Ltd Waste housing container and method for housing waste
JP2002214393A (en) * 2001-01-12 2002-07-31 Ohbayashi Corp Radioactive waste disposing facility
JP2003010808A (en) * 2001-07-02 2003-01-14 Shimizu Corp Waste disposal facilities
JP2003177198A (en) * 2001-12-12 2003-06-27 Mitsubishi Heavy Ind Ltd Cement solidified body storage container and lid used therefor
JP2005017060A (en) * 2003-06-25 2005-01-20 Mitsubishi Heavy Ind Ltd Bentonite member and method for installing it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008100154A (en) * 2006-10-18 2008-05-01 Shimizu Corp Gas-permeable passage member for reclamation facility and reclamation facility

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