JP2000145202A - Structure of radiation shield wall - Google Patents
Structure of radiation shield wallInfo
- Publication number
- JP2000145202A JP2000145202A JP10330247A JP33024798A JP2000145202A JP 2000145202 A JP2000145202 A JP 2000145202A JP 10330247 A JP10330247 A JP 10330247A JP 33024798 A JP33024798 A JP 33024798A JP 2000145202 A JP2000145202 A JP 2000145202A
- Authority
- JP
- Japan
- Prior art keywords
- sand
- earth
- hollow portion
- radiation shielding
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、加速器の施設等で
用いられる放射線遮蔽壁の構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a radiation shielding wall used in an accelerator facility or the like.
【０００２】[0002]
【従来の技術】例えば、加速器の施設では、エネルギー
が高く透過性の高い放射線を発生させるため、放射線が
照射される外壁は外部に影響が出ないように数メートル
に及ぶ壁厚を必要とする場合がある。2. Description of the Related Art For example, in an accelerator facility, in order to generate radiation having high energy and high transparency, an outer wall to be irradiated must have a wall thickness of several meters so as not to affect the outside. There are cases.
【０００３】この種の施設の外壁を、その位置で発生す
る放射線に対して遮蔽上必要となる重量に見合うように
厚さ・密度を想定して鉄筋コンクリートで製作すると、
充填材としては高価となるコンクリートの使用量が多く
なり、また建物躯体としての重量が増加するので、建物
を支える杭等の支持構造も多く必要となり建設費高騰の
要因となっていた。[0003] If the outer wall of this kind of facility is made of reinforced concrete assuming a thickness and density corresponding to the weight required for shielding against radiation generated at that location,
As the amount of expensive concrete used as a filler increases, and the weight of the building increases, a large number of supporting structures such as piles for supporting the building are required, which has caused a rise in construction costs.
【０００４】[0004]
【発明が解決しようとする課題】そこで、建設費をより
安価にするため、コンクリート躯体内に遮蔽材料として
土砂を充填するようにした放射線遮蔽壁の構造が考えら
れている。この構造の場合、放射線遮蔽性能は土砂の比
重及びそれに含有される水量で決まるが、土砂は自然に
乾燥するため、乾燥状態の土砂を想定して充填する土砂
量を決定することになる。そのため、鉄筋コンクリート
製の放射線遮蔽壁の場合に比べて壁の断面を大きく設定
しなければならないという不具合を生じる。Therefore, in order to reduce the construction cost, a structure of a radiation shielding wall in which a concrete body is filled with earth and sand as a shielding material has been considered. In the case of this structure, the radiation shielding performance is determined by the specific gravity of the earth and sand and the amount of water contained therein. However, since the earth and sand is naturally dried, the amount of earth and sand to be filled is determined on the assumption that the earth and sand are in a dry state. Therefore, there arises a problem that the cross section of the wall must be set to be larger than that of the radiation shielding wall made of reinforced concrete.
【０００５】断面を小さくするため、雨水により自然に
水分を取り込んで土砂を湿潤状態に維持することが考え
られる。しかし、この方法では、降雨時に壁面に対する
水圧が高くなり建屋内に漏水が生じるので、壁に防水措
置が必要となり、工事の増加及び難しい保守管理が発生
することになる。[0005] In order to reduce the cross section, it is conceivable to keep moisture in the soil by taking in water naturally by rainwater. However, according to this method, the water pressure on the wall surface increases during rainfall and water leakage occurs in the building, so that waterproof measures are required for the wall, which leads to an increase in construction and difficult maintenance management.
【０００６】本発明の目的は、したがって、従来技術に
おける上述の問題点を解決することができるようにし
た、放射線遮蔽壁の構造を提供することにある。It is therefore an object of the present invention to provide a radiation shielding wall structure which can solve the above-mentioned problems in the prior art.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するた
め、請求項１の発明によれば、内部に中空部を設け、該
中空部内に放射線遮蔽材として土砂を充填するようにし
た放射線遮蔽壁の構造であって、前記中空部に対応する
底盤をなくし、前記中空部内に充填された土砂が地面と
直接接触して該土砂内に地中の水が直接浸透するように
した放射線遮蔽壁の構造が提案される。According to the first aspect of the present invention, there is provided a radiation shielding wall in which a hollow portion is provided, and the hollow portion is filled with earth and sand as a radiation shielding material. The radiation shielding wall of the above structure, wherein a bottom plate corresponding to the hollow portion is eliminated, and the earth and sand filled in the hollow portion comes into direct contact with the ground so that water in the ground penetrates directly into the earth and sand. A structure is proposed.
【０００８】中空部内に放射線遮蔽材としての土砂を充
填した場合、底盤がないので、充填土砂は地面に直接接
触し、地中内の水が充填土砂に浸透し、中空部内に充填
された土砂内の水量が常時適量に保持される。この結
果、良好な放射線遮蔽性能を長期間に亙って保持させる
ことができ、全体が鉄筋コンクリートで形成されている
放射線遮蔽壁と同程度の厚さで同等の放射線遮蔽性能を
得ることができる。When the hollow portion is filled with earth and sand as a radiation shielding material, since there is no bottom, the filled earth and sand directly contact the ground, water in the ground penetrates into the filled earth and sand, and the earth and sand filled in the hollow portion The amount of water inside is always kept at an appropriate amount. As a result, good radiation shielding performance can be maintained for a long period of time, and the same radiation shielding performance can be obtained with the same thickness as the radiation shielding wall formed entirely of reinforced concrete.
【０００９】地中の水が充填土砂内に良好に浸透するよ
う、必要に応じて中空部内にペーパードレン等を配置し
て毛細管現象を積極的に進めるようにすることもでき
る。[0009] If necessary, a paper drain or the like may be arranged in the hollow portion so that the capillary phenomenon can be positively promoted so that the underground water can well penetrate into the filled earth and sand.
【００１０】底盤がないので、浸透、蒸散による地面か
らの水の上昇により、放射線遮蔽性能の低下の原因とな
る充填土砂の乾燥を防ぎ、土量を低減することができ
る。このため、壁断面を最小限にできる。ペーパードレ
ン等により、浸透による水の上昇を促し、上述の効果を
より確実なものにできる。中空部内に充填する土砂はそ
の建設現場で発生する掘削残土を用いることができるた
め、残土処分の負担が軽減され、工事が合理化される。
さらに、充填土砂の下の底盤をなくしたことにより、土
砂の重量が躯体に載荷されず、基礎、杭等が削減でき、
建設費を合理化することができる。[0010] Since there is no bottom, it is possible to prevent drying of the filled earth and sand, which causes a decrease in radiation shielding performance due to the rise of water from the ground due to permeation and evaporation, and to reduce the amount of soil. For this reason, the wall cross section can be minimized. The paper drain or the like promotes an increase in water due to permeation, so that the above-described effects can be further ensured. Excavated soil generated at the construction site can be used for the earth and sand to be filled in the hollow portion, so that the burden of disposal of the residual soil is reduced and the construction is streamlined.
In addition, by eliminating the bottom plate under the filled earth, the weight of the earth and sand is not loaded on the frame, and the foundation and piles can be reduced,
Construction costs can be streamlined.
【００１１】請求項２の発明によれば、内部に中空部を
設け、該中空部内に放射線遮蔽材として土砂を充填する
ようにした放射線遮蔽壁の構造であって、前記中空部上
部に設けられた散水管と、前記散水管に連結されており
前記散水管から前記中空部内への水の供給を制御するこ
とができる給水系統と、前記中空部内に充填された土砂
の乾燥し易い部位に埋設された水分計とを備え、該水分
計の出力に応答して前記給水系統から前記中空部内への
給水を制御して前記土砂中の水分量を所定レベル以上に
保つことができるようにした放射線遮蔽壁の構造が提案
される。According to the second aspect of the present invention, there is provided a radiation shielding wall structure in which a hollow portion is provided therein, and the hollow portion is filled with earth and sand as a radiation shielding material. A sprinkler pipe, a water supply system connected to the sprinkler pipe and capable of controlling the supply of water from the sprinkler pipe into the hollow portion, and a water supply system embedded in a portion where the earth and sand filled in the hollow portion is easily dried. And a radiation meter that controls water supply from the water supply system into the hollow portion in response to the output of the moisture meter so that the water content in the earth and sand can be maintained at a predetermined level or more. A structure of the shielding wall is proposed.
【００１２】この構成によれば、遮蔽壁の中空部内の土
砂が適切な湿気を維持するよう中空部内に給水が行われ
るので、少ない土量で放射線の遮蔽が良好にでき、放射
線遮蔽壁の壁断面を小さくできる。また、漏水を起こす
程中空部内で水圧が上昇しないので、防水措置が不要で
ある。[0012] According to this configuration, since water is supplied into the hollow portion so as to maintain appropriate moisture in the hollow portion of the shielding wall, radiation can be shielded well with a small amount of soil. Cross section can be reduced. In addition, since the water pressure does not increase in the hollow portion so as to cause water leakage, waterproof measures are not required.
【００１３】[0013]
【発明の実施の形態】以下、図面を参照して本発明の実
施の形態の一例につき詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.
【００１４】図１は、加速器の施設内で照射された放射
線が外部に漏洩しないようにするための外壁として、本
発明により構成された放射線遮蔽壁の構造の実施の形態
の一例を示す図であり、同図（Ａ）は放射線遮蔽壁の縦
断面図、同図（Ｂ）はその横断面図である。FIG. 1 is a view showing an example of an embodiment of a structure of a radiation shielding wall constituted according to the present invention as an outer wall for preventing radiation irradiated in an accelerator facility from leaking outside. FIG. 1A is a longitudinal sectional view of a radiation shielding wall, and FIG. 1B is a transverse sectional view thereof.
【００１５】放射線遮蔽壁１００は、図１に示すよう
に、コンクリート製の屋外側の壁体１０１と屋内側の壁
体１０２とを屋根スラブ１０３及び複数の控え壁１０７
で図示の如く接続した中空の構造となっている。屋外側
の壁体１０１、屋内側の壁体１０２、控え壁１０７及び
屋根スラブ１０３によって、放射線遮蔽壁１００内には
複数の中空部１０４が形成されている。各中空部１０４
内には、放射線遮蔽材料として土砂１０５が充填されて
おり、これにより放射線遮蔽壁１００全体が鉄筋コンク
リートで形成されている放射線遮蔽壁と同等の放射線遮
蔽性能を有するようになっている。As shown in FIG. 1, the radiation shielding wall 100 is composed of a concrete outdoor wall 101 and an indoor wall 102, a roof slab 103 and a plurality of siding walls 107.
And has a hollow structure connected as shown. A plurality of hollow portions 104 are formed in the radiation shielding wall 100 by the wall body 101 on the outdoor side, the wall body 102 on the indoor side, the butting wall 107, and the roof slab 103. Each hollow part 104
The inside is filled with earth and sand 105 as a radiation shielding material, so that the entire radiation shielding wall 100 has the same radiation shielding performance as a radiation shielding wall formed of reinforced concrete.
【００１６】土砂１０５が乾燥してその比重及び含水量
が減少し放射線遮蔽壁１００の放射線遮蔽性能が低下す
るのを防ぐため、放射線遮蔽壁１００においては、底盤
を設けておらず、したがって、各中空部１０４内に充填
された土砂１０５はその下部において地面と直接接触し
ており、地中の水が土砂１０５に浸透することができる
構造となっている。本実施の形態では、毛細管現象を積
極的にさらに進めるため、中空部１０４内にペーパード
レン１０６が浸透促進材として配置されている。In order to prevent the earth and sand 105 from drying and reducing the specific gravity and the water content and the radiation shielding performance of the radiation shielding wall 100 from deteriorating, the radiation shielding wall 100 is not provided with a bottom plate. The earth and sand 105 filled in the hollow portion 104 is in direct contact with the ground at a lower portion thereof, and has a structure in which water in the ground can permeate into the earth and sand 105. In the present embodiment, a paper drain 106 is disposed in the hollow portion 104 as a permeation enhancer in order to further promote the capillary phenomenon.
【００１７】屋外側の壁体１０１と屋内側の壁体１０２
とは屋根スラブ１０３及び複数の控え壁１０７によって
接続されているので、中空部１０４内に土砂１０５を充
填したときに屋外側の壁体１０１が転倒するのを確実に
防止することができる。An outdoor wall 101 and an indoor wall 102
Is connected to the roof slab 103 and the plurality of retaining walls 107, so that when the hollow portion 104 is filled with earth and sand 105, it is possible to reliably prevent the outdoor-side wall body 101 from tipping over.
【００１８】このように、放射線遮蔽壁１００において
は、底盤をなくし、浸透、蒸散による地面からの水の上
昇により土砂１０５に常時湿り気を与える構成であるか
ら、遮蔽性能の低下の原因となる土砂１０５の乾燥を防
ぐことができる。この結果、乾燥状態の土砂１０５を想
定して土砂１０５の土量を多めに決定する必要がなくな
り、放射線遮蔽壁１００の断面を従来に比べて小さくす
ることができる。すなわち、土砂１０５の充填土量を削
減することができ、少ない土量で所要の放射線遮蔽性能
を保持することができるので、放射線遮蔽壁１００の壁
断面を最小限にし、小型化を図ることができる。As described above, the radiation shielding wall 100 has a configuration in which the bottom is eliminated and the soil 105 is constantly moistened by the rise of water from the ground due to permeation and transpiration. 105 can be prevented from drying. As a result, it is not necessary to determine the soil amount of the earth and sand 105 as large assuming the earth and sand 105 in a dry state, and the cross section of the radiation shielding wall 100 can be reduced as compared with the related art. That is, the amount of soil filled with the earth and sand 105 can be reduced, and required radiation shielding performance can be maintained with a small amount of soil. Therefore, the wall cross section of the radiation shielding wall 100 can be minimized, and miniaturization can be achieved. it can.
【００１９】また、底盤をなくした構成を採用したこと
により、中空部１０４内に充填された土砂１０５の重量
が躯体に載荷されず、基礎、杭等が削減できるのでコス
トの低減を図ることができる。なお、充填すべき土砂１
０５は、その建設現場で発生する掘削残土を用いること
ができるので、残土処理の負担が軽減され、工事が合理
化される。その結果、建設費を安価にすることができ
る。In addition, by adopting the configuration without the bottom plate, the weight of the earth and sand 105 filled in the hollow portion 104 is not loaded on the skeleton, and the number of foundations and piles can be reduced, so that the cost can be reduced. it can. In addition, earth and sand 1 to be filled
05 can use the excavated residual soil generated at the construction site, so that the burden of the residual soil treatment is reduced and the construction is streamlined. As a result, construction costs can be reduced.
【００２０】更に、ペーパードレン１０６等の浸透促進
材により、浸透による水の上昇を促し、上述の効果を一
層確実なものにすることができる。Further, the permeation enhancer such as the paper drain 106 promotes the rise of water due to permeation, so that the above-mentioned effect can be further ensured.
【００２１】図２には、本発明による放射線遮蔽壁の構
造の別の実施の形態が示されている。同図（Ａ）は放射
線遮蔽壁の縦断面図、同図（Ｂ）はその横断面図であ
る。FIG. 2 shows another embodiment of the structure of the radiation shielding wall according to the present invention. FIG. 1A is a longitudinal sectional view of a radiation shielding wall, and FIG. 1B is a transverse sectional view thereof.
【００２２】図２に示した放射線遮蔽壁２００は、コン
クリート製の屋外側の壁体２０１と屋内側の壁体２０２
とを屋根スラブ２０３及び複数の控え壁２０７で図示の
如く接続した中空の構造となっている。屋外側の壁体２
０１、屋内側の壁体２０２、控え壁２０７及び屋根スラ
ブ２０３によって、放射線遮蔽壁２００内には複数の中
空部２０４が形成されている。放射線遮蔽壁２００の下
部には、底盤２０８が構築されており、各中空部２０４
は地面から遮断されている。The radiation shielding wall 200 shown in FIG. 2 comprises a concrete outdoor wall 201 and an indoor wall 202.
Are connected by a roof slab 203 and a plurality of retaining walls 207 as shown in the figure. Outdoor wall 2
01, a plurality of hollow portions 204 are formed in the radiation shielding wall 200 by the indoor-side wall body 202, the buttress wall 207, and the roof slab 203. At the lower part of the radiation shielding wall 200, a bottom plate 208 is constructed, and each hollow portion 204 is formed.
Is shielded from the ground.
【００２３】各中空部２０４内には、放射線遮蔽材料と
して土砂２０５が充填されており、これにより放射線遮
蔽壁２００全体が鉄筋コンクリートで形成されている放
射線遮蔽壁と同等の放射線遮蔽性能を有するようになっ
ている。このように、放射線遮蔽壁２００では、底盤２
０８を設けているので、中空部２０４内に充填される土
砂２０５は地面と直接接触することのない構成となって
いるが、放射線遮蔽壁２００は壁としてのより強い剛性
を持っている。Each hollow portion 204 is filled with earth and sand 205 as a radiation shielding material so that the entire radiation shielding wall 200 has radiation shielding performance equivalent to that of a radiation shielding wall formed of reinforced concrete. Has become. Thus, in the radiation shielding wall 200, the bottom plate 2
08, the earth and sand 205 filled in the hollow portion 204 does not directly contact the ground, but the radiation shielding wall 200 has stronger rigidity as a wall.
【００２４】土砂２０５が乾燥してその比重及び含水量
が減少し放射線遮蔽壁２００の放射線遮蔽性能が低下す
るのを防ぐため、放射線遮蔽壁２００においては、各中
空部２０４内への水分補給のために散水システム３００
が設けられている。In order to prevent the earth and sand 205 from drying and reducing the specific gravity and the water content and the radiation shielding performance of the radiation shielding wall 200 from deteriorating, the radiation shielding wall 200 needs to supply water to each hollow portion 204. Watering system 300 for
Is provided.
【００２５】散水システム３００は、各中空部２０４内
の上部に配設された散水管３０１と、散水管３０１へ給
水を行う給水系統３１０とを有している。The sprinkling system 300 has a sprinkling pipe 301 disposed at an upper part in each hollow portion 204 and a water supply system 310 for supplying water to the sprinkling pipe 301.
【００２６】給水系統３１０は、図示しない上水管と散
水管３０１とを連結する導水管３１１と、導水管３１１
に設けられた電磁開閉弁３１２とから成り、電磁開閉弁
３１２は制御ユニット３１３からの開閉駆動信号に応答
して開閉される。中空部２０４内に充填された土砂２０
５の乾燥し易い部位には水分計３１４が埋設されてお
り、水分計３１４からの検出信号Ｓが制御ユニット３１
３に入力される構成となっている。The water supply system 310 includes a water pipe 311 for connecting a water pipe (not shown) and the water pipe 301, and a water pipe 311.
The electromagnetic on-off valve 312 is opened and closed in response to an on-off drive signal from the control unit 313. Earth and sand 20 filled in the hollow portion 204
A moisture meter 314 is embedded in a portion where the moisture is easily dried, and a detection signal S from the moisture meter 314 is transmitted to the control unit 31.
3 is input.
【００２７】土砂２０５の乾燥により、水分計３１４が
設定値以下の水分量を示した場合、制御ユニット３１３
は電磁開閉弁３１２の開放を指示し、電磁開閉弁３１２
が開いて土砂２０５中に散水管３０１から一定量の散水
がなされるように構成されている。When the moisture meter 314 shows a moisture amount equal to or less than the set value due to the drying of the soil 205, the control unit 313
Indicates that the electromagnetic on-off valve 312 is to be opened.
Is opened so that a certain amount of water is sprinkled from the water sprinkling pipe 301 into the earth and sand 205.
【００２８】散水システム３００は、水分計３１４に複
数の散水管３０１・電磁開閉弁３１２を連動させても構
わないし、また複数の水分計３１４の平均あるいは下限
値により各電磁開閉弁３１２の開閉を決定するようにし
ても構わない。散水システム３００を埋設後、実験等に
より適切な設定を決定すればよい。In the watering system 300, a plurality of the water spray pipes 301 and the electromagnetic on-off valves 312 may be linked to the moisture meter 314, and each of the electromagnetic on-off valves 312 is opened and closed according to the average or lower limit of the plurality of moisture meters 314. It may be determined. After embedding the watering system 300, an appropriate setting may be determined by experiments or the like.
【００２９】放射線遮蔽壁２００においては、散水シス
テム３００を採用したので、雨水等を利用して土砂２０
５内に水分を取り込む必要はなく、散水システム３００
により適切な量の水分が土砂２０５に補給される。した
がって、雨水を利用した場合のように、屋外側の壁体２
０１及び屋内側の壁体２０２の壁面に対する水圧が高く
なり建屋内に漏水が生じるという不具合を生じさせるこ
とがない。In the radiation shielding wall 200, since the watering system 300 is employed, the sediment 20 is made using rainwater or the like.
It is not necessary to take in moisture in the water supply system 5 and the watering system 300
Thus, an appropriate amount of water is supplied to the earth and sand 205. Therefore, as in the case of using rainwater, the wall 2 on the outdoor side is used.
There is no problem that the water pressure on the wall surface of the wall body 01 and the indoor side wall body 202 is increased to cause water leakage in the building.
【００３０】放射線遮蔽壁２００においては、散水シス
テム３００により土砂２０５が常時適度な湿気を維持す
るので、少ない土量で放射線遮蔽ができ、その壁断面を
小さくすることができる。また、漏水を起こす程水圧が
上昇しないので、防水措置が不要である。したがって、
保守管理も容易になる。In the radiation shielding wall 200, since the soil 205 always maintains appropriate moisture by the watering system 300, radiation shielding can be performed with a small amount of soil, and the wall cross section can be reduced. Further, since the water pressure does not rise so much as to cause water leakage, no waterproof measure is required. Therefore,
Maintenance management becomes easy.
【００３１】[0031]
【発明の効果】本発明によれば、上述の如く、中空部の
底盤をなくし、浸透、蒸散による地面からの水の上昇に
より中空部に充填されている土砂に常時湿り気を与える
構成としたので、遮蔽性能の低下の原因となる土砂の乾
燥を防ぐことができ、少ない土量で所要の放射線遮蔽性
能を長期間に亙って保持することができる。この結果、
壁断面を最小限にし、小型化を図ることができる。According to the present invention, as described above, the bottom of the hollow portion is eliminated and the soil and sand filled in the hollow portion are constantly moistened by the rise of water from the ground due to permeation and evaporation. In addition, it is possible to prevent the earth and sand from drying which causes a decrease in shielding performance, and to maintain the required radiation shielding performance for a long period of time with a small amount of soil. As a result,
The wall cross section can be minimized, and miniaturization can be achieved.
【００３２】また、底盤をなくしたことにより中空部内
に充填された土砂の重量が躯体に載荷されず、基礎、杭
等が削減できるのでコストの低減を図ることができる。
また、充填すべき土砂は、その建設現場で発生する掘削
残土を用いることができるので、残土処理の負担が軽減
され、工事が合理化される。その結果、建設費を安価に
することができる。Further, by eliminating the bottom plate, the weight of the earth and sand filled in the hollow portion is not loaded on the frame, and the number of foundations and piles can be reduced, so that the cost can be reduced.
Moreover, since the excavated soil generated at the construction site can be used as the earth and sand to be filled, the burden of the residual soil treatment is reduced, and the construction is streamlined. As a result, construction costs can be reduced.
【００３３】散水システムにより適切な量の水分が土砂
に補給されるようにした構成によれば、土砂が常時適度
な湿気を維持するので、少ない土量で放射線遮蔽がで
き、その壁断面を小さくすることができる。また、雨水
を利用した場合のように漏水を起こす程水圧が上昇しな
いので、防水措置が不要である。したがって、保守管理
も容易になる。底盤を設けることができるので、壁とし
ての必要な剛性を確保するのに役立つ。According to the configuration in which an appropriate amount of water is supplied to the earth and sand by the watering system, since the earth and sand always maintain an appropriate humidity, radiation shielding can be performed with a small amount of soil and the wall cross section can be reduced. can do. Moreover, since the water pressure does not rise so much as to cause water leakage as in the case of using rainwater, no waterproofing measures are required. Therefore, maintenance management becomes easy. Since a bottom plate can be provided, it helps to secure necessary rigidity as a wall.
【図１】本発明の実施の形態の一例を示す断面図。FIG. 1 is a cross-sectional view illustrating an example of an embodiment of the present invention.
【図２】本発明の別の実施の形態を示す断面図。FIG. 2 is a cross-sectional view showing another embodiment of the present invention.
１００、２００ 放射線遮蔽壁 １０１、２０１ 屋外側の壁体 １０２、２０２ 屋内側の壁体 １０３、２０３ 屋根スラブ １０４、２０４ 中空部 １０５、２０５ 土砂 １０６ ペーパードレン １０７、２０７ 控え壁 ２０８ 底盤 ３００ 散水システム ３０１ 散水管 ３１０ 給水系統 ３１１ 導水管 ３１２ 電磁開閉弁 ３１３ 制御ユニット ３１４ 水分計 Ｓ 検出信号 100, 200 Radiation shielding wall 101, 201 Outdoor side wall body 102, 202 Indoor side wall body 103, 203 Roof slab 104, 204 Hollow part 105, 205 Earth and sand 106 Paper drain 107, 207 Butt wall 208 Bottom 300 Watering system 301 Watering pipe 310 Water supply system 311 Water pipe 312 Solenoid on-off valve 313 Control unit 314 Moisture meter S Detection signal
Claims (2)
線遮蔽材として土砂を充填するようにした放射線遮蔽壁
の構造であって、 前記中空部に対応する底盤をなくし、前記中空部内に充
填された土砂が地面と直接接触して該土砂内に地中の水
が直接浸透するようにしたことを特徴とする放射線遮蔽
壁の構造。1. A radiation shielding wall structure in which a hollow portion is provided therein and earth and sand are filled in the hollow portion as a radiation shielding material, wherein a bottom plate corresponding to the hollow portion is eliminated, and the hollow portion is provided inside the hollow portion. A structure of a radiation shielding wall, wherein the filled earth and sand is in direct contact with the ground so that water in the ground penetrates directly into the earth and sand.
線遮蔽材として土砂を充填するようにした放射線遮蔽壁
の構造であって、 前記中空部上部に設けられた散水管と、 前記散水管に連結されており前記散水管から前記中空部
内への水の供給を制御することができる給水系統と、 前記中空部内に充填された土砂の乾燥し易い部位に埋設
された水分計とを備え、 該水分計の出力に応答して前記給水系統から前記中空部
内への給水を制御して前記土砂中の水分量を所定レベル
以上に保つことができるようにしたことを特徴とする放
射線遮蔽壁の構造。2. A structure of a radiation shielding wall provided with a hollow portion therein and filled with earth and sand as a radiation shielding material in the hollow portion, wherein a water pipe provided on an upper portion of the hollow portion; A water supply system connected to a water pipe and capable of controlling the supply of water from the sprinkler pipe into the hollow portion; and a moisture meter buried in a portion of the soil filled in the hollow portion where the earth and sand are easily dried. A radiation shielding wall characterized by controlling water supply from the water supply system into the hollow portion in response to an output of the moisture meter so that the water content in the earth and sand can be maintained at a predetermined level or more. Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33024798A JP3533096B2 (en) | 1998-11-06 | 1998-11-06 | Radiation shielding wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33024798A JP3533096B2 (en) | 1998-11-06 | 1998-11-06 | Radiation shielding wall structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000145202A true JP2000145202A (en) | 2000-05-26 |
| JP3533096B2 JP3533096B2 (en) | 2004-05-31 |
Family
ID=18230511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33024798A Expired - Fee Related JP3533096B2 (en) | 1998-11-06 | 1998-11-06 | Radiation shielding wall structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3533096B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013083511A (en) * | 2011-10-07 | 2013-05-09 | Ishikawajima Constr Materials Co Ltd | Tubular structure |
| JP2019004879A (en) * | 2018-06-21 | 2019-01-17 | 卯 石井 | Automatic rainfall sprinkling system |
-
1998
- 1998-11-06 JP JP33024798A patent/JP3533096B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013083511A (en) * | 2011-10-07 | 2013-05-09 | Ishikawajima Constr Materials Co Ltd | Tubular structure |
| JP2019004879A (en) * | 2018-06-21 | 2019-01-17 | 卯 石井 | Automatic rainfall sprinkling system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3533096B2 (en) | 2004-05-31 |
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