JP2007077627A - Oil fence and its usage method - Google Patents

Oil fence and its usage method Download PDF

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JP2007077627A
JP2007077627A JP2005264918A JP2005264918A JP2007077627A JP 2007077627 A JP2007077627 A JP 2007077627A JP 2005264918 A JP2005264918 A JP 2005264918A JP 2005264918 A JP2005264918 A JP 2005264918A JP 2007077627 A JP2007077627 A JP 2007077627A
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oil fence
buoyancy
oil
bodies
fence
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Mikio Kimura
幹生 木村
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Chugoku Electric Power Co Inc
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Chugoku Electric Power Co Inc
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/204—Keeping clear the surface of open water from oil spills

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil fence which enhances the effect of preventing the diffusion of oil, by suppressing the outflow of oil from a connecting section of the oil fence by the falling of the upside of the connecting section. <P>SOLUTION: The oil fence is composed of the connecting sections 2A and 2B for connecting a plurality of oil fence bodies 1A and 1B, both the sides surfaces of which have buoyancy bodies 13A and 13B and where horizontally-long curtain-like skirt sections 11A and 11B are suspended, via longitudinal ends. The oil fence is characterized in that a buoyancy structure 3 is provided in such a manner as to sandwich the connecting sections 2A and 2B of the oil fence. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、一般に、海や湖沼、または河川などで、特定の水域を取り囲むようにして水面に浮かべることにより、流出した油の拡散を防止するオイルフェンスに関するものである。   The present invention generally relates to an oil fence that prevents the spilled oil from diffusing by floating on the surface of a sea, a lake, or a river so as to surround a specific water area.

従来のオイルフェンスは、例えば図４，５で示すように一つの長手方向の端部同士を接続するようにして、複数のオイルフェンス本体１Ａ，１Ｂを連結したものが一般に用いられている。
前記オイルフェンス本体１Ａ，１Ｂは、内部に独立気泡の発泡体や空気等を封入形成している浮力体１３Ａ，１３Ｂと、この浮力体１３Ａ，１３Ｂの下側に垂下し、下端部に例えば重錘用の鉛ロープ１５を設けている横長の幕状のスカート部１１Ａ，１１Ｂよりなる。そして、各オイルフェンス本体１Ａ，１Ｂ同士の接続は、接続用のファスナー２０やシャックル２１などが設けられている連結部２Ａ、２Ｂで接続されており、通常は全長約２０〜５０ｍに設定されている。 As shown in FIGS. 4 and 5, for example, a conventional oil fence is generally used in which a plurality of oil fence main bodies 1A and 1B are connected to each other in such a manner that ends in one longitudinal direction are connected to each other.
The oil fence main bodies 1A and 1B are suspended below the buoyancy bodies 13A and 13B in which closed-cell foams, air, and the like are enclosed, and are suspended below the buoyancy bodies 13A and 13B. It consists of horizontally long curtain-like skirt portions 11A and 11B provided with lead ropes 15 for weights. And the connection of each oil fence main body 1A, 1B is connected by connection part 2A, 2B provided with the fastener 20 for connection, the shackle 21, etc., and is normally set to about 20-50m in total length. Yes.

このように構成されている複数の前記オイルフェンス本体１Ａ，１Ｂを、前記ファスナー２０やシャックル２１同士を接続することにより順次連結し、必要な長さに延長した前記オイルフェンスは、海や湖または河川などで、特定の水域を取り囲むようにして水面に浮かべて設置され、流出した油の拡散を防止している。   The plurality of oil fence bodies 1A, 1B configured in this manner are sequentially connected by connecting the fasteners 20 and shackles 21 to each other, and the oil fence extended to a required length is the sea, lake, or It is installed on the surface of a river so as to surround a specific water area, preventing the spilled oil from diffusing.

しかしながら、このようなオイルフェンスを、水面に浮かべて設置すると、前記端部同士を接続するオイルフェンス本体１Ａ，１Ｂ同士の連結部２Ａ，２Ｂは、前記端部が一般的に可撓性を有しているため、上側が前後方向に倒れることにより曲がる場合がある。
従って、前記オイルフェンスの内側の水面の波が前記連結部２Ａ，２Ｂを越えやすくなったり、内側と外側との水面が流通したりすることにより、内側に漂流している油が前記連結部から前記オイルフェンスの外側へ流出し、漏油対策が不十分となる場合がある。 However, when such an oil fence is floated on the surface of the water, the end portions of the connecting portions 2A and 2B between the oil fence main bodies 1A and 1B connecting the end portions are generally flexible. Therefore, the upper side may bend when it falls down in the front-rear direction.
Accordingly, when the water surface wave inside the oil fence easily passes over the connecting portions 2A and 2B, or the water surface between the inner side and the outer side flows, the oil drifting inwardly flows from the connecting portion. It may flow out to the outside of the oil fence and countermeasures against oil leakage may be insufficient.

そこで、従来このような問題点を解消するために、前記連結部の上側の倒れ込みによる曲がりを防ぐことを目的として特許文献１に示す技術が提案されている。   Therefore, in order to solve such problems, a technique shown in Patent Document 1 has been proposed for the purpose of preventing the bending due to the upper side falling of the connecting portion.

特開２００３−３０１４４４号公報JP 2003-301444 A

上記背景技術で述べたように、従来のオイルフェンスは、前記連結部の上側の倒れ込みによる曲がりを防ぐことにより、この連結部からの油の流出を抑えることが出来ない。また特許文献１の技術では、油の拡散防止の効果を高めることは可能ではある。しかし、この技術では、連結部の内部に芯材を設ける構成となっている。この接続部はファスナー等で接続する物であり、接続部巾は１８０ｍｍ程度であるのに対し、接続部の浮力体の間隔は５００ｍｍ程度もある。従って、接続部自体に応力が加わり、ある程度引っ張られた状態では十分に上部の倒れ込みを防止出来る。しかしながら、オイルフェンスを使用する場合には、海上では、船舶の座礁等、平穏な海面状態ばかりでなく、あれた状態の場合もある。
従って、オイルフェンスに波の力等が加わり、接続部が弛む状態等になる場合が生じる。かかる状態では、特許文献１に示す接続部では、浮力体間を直接接続する構成ではないことより、枠体を含む接続部が倒れる可能性がある。
本発明は、前記連結部の上側の倒れ込みにより、この連結部からの油の流出を抑え、油の拡散防止の効果を高めたオイルフェンスを提供することを目的とする。 As described in the background art above, the conventional oil fence cannot prevent the oil from flowing out from the connecting portion by preventing the bending due to the falling of the upper side of the connecting portion. Further, with the technique of Patent Document 1, it is possible to enhance the effect of preventing oil diffusion. However, in this technique, a core material is provided inside the connecting portion. This connection part is connected by a fastener or the like, and the connection part width is about 180 mm, while the distance between the buoyancy bodies in the connection part is about 500 mm. Therefore, stress is applied to the connection part itself, and the upper part can be prevented from falling down sufficiently when pulled to some extent. However, when using an oil fence, on the sea, there are cases where it is not only a calm sea surface state, such as a grounding of a ship, but also a terrible state.
Therefore, a wave force or the like is applied to the oil fence, and the connection part may be loosened. In such a state, in the connection part shown in patent document 1, since it is not the structure which connects between buoyancy bodies directly, the connection part containing a frame may fall down.
It is an object of the present invention to provide an oil fence that suppresses the outflow of oil from the connecting portion by the fall of the upper side of the connecting portion and enhances the effect of preventing oil diffusion.

請求項１記載の発明は、
横長の幕状のスカート部が垂下され、両側面に浮力体を有している複数のオイルフェンス本体を、長手方向の端部同士で接続する連結部を備えたオイルフェンスにおいて、前記オイルフェンスの連結部を挟持するように、浮力構造体を設けることを特徴とするオイルフェンスである。
請求項２記載の発明は、オイルフェンスに設けている浮力体のスペア浮力体或いは廃棄オイルフェンスの浮力体を用いることを特徴とするオイルフェンスである。
また請求項３記載のオイルフェンスにおいて、付加する浮力体の下方にバランスウエイトを設けることを特徴とするオイルフェンスである。
更に、請求項４記載の発明は、浮力体を両側面に有し、横長の幕状のスカート部が垂下されている複数のオイルフェンス本体を、長手方向の端部同士で接続する連結部に連結し使用するオイルフェンスの使用方法に於いて、少なくとも浮力体間の接続した前記連結部を起立するように浮力を与えつつ結合することを特徴とするオイルフェンスの使用方法である。 The invention described in claim 1
An oil fence comprising a connecting portion for connecting a plurality of oil fence main bodies each having a buoyant body on both side surfaces with a horizontally long curtain-like skirt portion connected at the ends in the longitudinal direction. It is an oil fence characterized by providing a buoyancy structure so that a connection part may be pinched.
The invention according to claim 2 is an oil fence characterized by using a spare buoyancy body of a buoyancy body provided on the oil fence or a buoyancy body of a waste oil fence.
The oil fence according to claim 3, wherein a balance weight is provided below the buoyancy body to be added.
Furthermore, the invention according to claim 4 is a connecting portion for connecting a plurality of oil fence bodies having buoyant bodies on both side surfaces and having a horizontally long curtain-like skirt portion hanging down at the ends in the longitudinal direction. In the method of using an oil fence to be connected and used, the oil fence is used in which the connecting portions connected between at least buoyant bodies are connected while giving buoyancy so as to stand up.

本発明の請求項１記載のオイルフェンス、及び４記載のオイルフェンス使用方法では、複数のオイルフェンス本体の長手方向の端部同士の連結部を挟持するように、浮力構造体を設ける構成であり、連結部が起立状態で浮力を受ける構成となり、従来のように連結部が倒れて、オイル等の流失を防止出来る。
また、本発明はオイルフェンスに浮力構造体を設ける構成であることより、従来使用しているオイルフェンスをそのまま使用することが出来る。
請求項２記載のオイルフェンスでは、補修用等のスペアの浮力体を使用することで簡単にオイルフェンス連結部上部が倒れることを防止出来る他、壊れたオイルフェンスの浮力体部分を廃棄せずに使用することが出来、資源の効率的使用を行うことが出来る。
更に、請求項３記載のオイルフェンスでは、浮力体の下方にバランスウエイトを設ける構成とすることで、再使用の浮力体の浮力の調整を行うことが出来、安定して連結部の倒れ込みを防止することが出来る。 In the oil fence according to claim 1 of the present invention and the method of using the oil fence according to claim 4, the buoyancy structure is provided so as to sandwich the connecting portions of the end portions in the longitudinal direction of the plurality of oil fence main bodies. The connecting portion is configured to receive buoyancy in an upright state, and the connecting portion collapses as in the conventional case, so that oil or the like can be prevented from flowing out.
Moreover, since this invention is a structure which provides a buoyancy structure in an oil fence, the conventionally used oil fence can be used as it is.
In the oil fence according to claim 2, the use of a spare buoyant body for repair or the like can prevent the upper part of the oil fence connecting portion from falling down easily, and the buoyant body portion of the broken oil fence can be prevented without being discarded. Can be used, and resources can be used efficiently.
Furthermore, in the oil fence according to claim 3, the balance weight is provided below the buoyancy body so that the buoyancy of the reusable buoyancy body can be adjusted and the connection portion can be prevented from falling down stably. I can do it.

以下、本発明を実施するための最良の形態を図面に基づいて説明する。
図１は、本発明に係るオイルフェンスの第１の実施の形態の系統図の概略の斜視図、図２は、分解斜視図である。
本発明は、複数のオイルフェンス本体１Ａ，１Ｂを、長手方向の端部同士で接続する連結部の連結部２Ａ，２Ｂを挟持するように、浮力構造体３を設ける構成である。 Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view of a system diagram of a first embodiment of an oil fence according to the present invention, and FIG. 2 is an exploded perspective view.
The present invention is a configuration in which the buoyancy structure 3 is provided so as to sandwich the connecting portions 2A and 2B of the connecting portion that connects the plurality of oil fence main bodies 1A and 1B at the ends in the longitudinal direction.

＜オイルフェンス本体１Ａ，１Ｂ＞
オイルフェンス本体１Ａ，１Ｂは、従来のオイルフェンスと同様の構成よりなる。
即ち、オイルフェンス本体１Ａ，１Ｂは、垂下している横長の幕状のスカート部１１Ａ，１１Ｂと、スカート部１１Ａ，１１Ｂの上部側面に両側から挟持するようにボルトナット１２等適宜手段で固定している浮力体１３Ａ，１３Ｂと、スカート部１１Ａ，１１Ｂの上縁長手方向に設けている縫い込みロープ１４と、スカート部１１Ａ，１１Ｂの下縁長手方向に設けている重用の鉛ロープ１５と、各オイルフェンス本体１Ａ，１Ｂの両端部にそれぞれ設けている接続部２Ａ，２Ｂとを備えている。
スカート部１１Ａ，１１Ｂは、例えばナイロンターポリンを２枚重ねて矩形状に切断して使用する。また浮力体１３Ａ，１３Ｂは、発砲スチレン等適宜材料を内包して形成している。そして、縫い込みロープ１４と、重用の鉛ロープ１５はスカート部１１Ａ，１１Ｂから脱落しないように、縫製等適宜固定手段で固定されている。 <Oil fence body 1A, 1B>
The oil fence main bodies 1A and 1B have the same configuration as a conventional oil fence.
That is, the oil fence main bodies 1A and 1B are fixed by appropriate means such as bolts and nuts 12 so as to be sandwiched from both sides by the horizontally elongated curtain-like skirt portions 11A and 11B and the upper side surfaces of the skirt portions 11A and 11B. The buoyancy bodies 13A, 13B, the sewing rope 14 provided in the upper edge longitudinal direction of the skirt portions 11A, 11B, and the heavy lead rope 15 provided in the lower edge longitudinal direction of the skirt portions 11A, 11B; Connection parts 2A and 2B provided at both ends of each oil fence main body 1A and 1B are provided.
The skirt portions 11A and 11B are used, for example, by overlapping two nylon tarpaulins and cutting them into a rectangular shape. The buoyancy bodies 13A and 13B are formed by appropriately including a material such as foamed styrene. The sewing rope 14 and the heavy lead rope 15 are fixed by appropriate fixing means such as sewing so as not to fall off the skirt portions 11A and 11B.

＜連結部２Ａ，２Ｂ＞
連結部２Ａ，２Ｂは前記オイルフェンス本体１Ａ，１Ｂの両端部に設けられており、端部にファスナー２０、及びシャックル２１及びベルト２２を介し、隣接するオイルフェンス本体１Ａ，１Ｂ同士を連結固定している。 <Connection part 2A, 2B>
The connecting portions 2A and 2B are provided at both ends of the oil fence main bodies 1A and 1B, and the adjacent oil fence main bodies 1A and 1B are connected and fixed to each other via fasteners 20, shackles 21 and belts 22 at the ends. ing.

＜浮力構造体３＞
浮力構造体３は、第１の実施の形態としては、図１，２で示すように、浮力構造体本体３０と浮力部３１よりなる。
浮力構造体本体３０は、浮力部３１を前記オイルフェンス本体１Ａ，１Ｂの連結部２Ａ、２Ｂの表裏面の、浮力体１３Ａ，１３Ｂの間に取り付けることが出来れば良く、板状或いはオイルフェンス本体１Ａ，１Ｂと同様に幕形状であっても良い。図１，２においては、合成樹脂等の板状に形成している。
また浮力部３１はオイルフェンス本体１Ａ，１Ｂに設けている浮力体１３Ａ，１３Ｂと同様に発砲スチレン等適宜材料を内包する構成とし、大きさは垂直方向に、浮力体１３Ａ，１３Ｂと同様の断面形状に形成している。
このように構成し、図２に示すように、オイルフェンス本体１Ａ，１Ｂの両端部の連結部２Ａ，２Ｂを２個の浮力構造体本体３０で挟み込むように位置させ、ボルト３２、ナット３３等の適宜固定具で連結部２Ａ，２Ｂを挟持するように固定する。
このとき、浮力部３１は前記オイルフェンス本体１Ａ，１Ｂに設けている浮力体１３Ａ，１３Ｂと同じ位置となるように浮力構造体本体３０を固定することで、オイルフェンス上端が一定の高さとなる安定した使用状態とすることが出来る。
このように構成することで、オイルフェンスの浮力体１３Ａ，１３Ｂと同様の位置に浮力構造体３の浮力部３１が位置し、浮力構造体により挟持されているオイルフェンスの連結部２Ａ、２Ｂが起立状態となるように浮力が働くことになり、悪天候の場合であっても連結部から油等の流失を防止出来、オイルフェンスによる特定水域の閉鎖を完全に行うことが出来る。 <Buoyancy structure 3>
As shown in FIGS. 1 and 2, the buoyancy structure 3 includes a buoyancy structure main body 30 and a buoyancy part 31 in the first embodiment.
The buoyancy structure main body 30 only needs to be able to attach the buoyancy portion 31 between the buoyancy bodies 13A and 13B on the front and back surfaces of the connecting portions 2A and 2B of the oil fence main bodies 1A and 1B. A curtain shape may be used similarly to 1A and 1B. 1 and 2, it is formed in a plate shape such as a synthetic resin.
The buoyancy part 31 is configured to include an appropriate material such as foamed styrene in the same manner as the buoyancy bodies 13A and 13B provided in the oil fence main bodies 1A and 1B, and the size is the same as the buoyancy bodies 13A and 13B in the vertical direction. It is formed into a shape.
As shown in FIG. 2, the connecting portions 2A and 2B at both ends of the oil fence main bodies 1A and 1B are positioned so as to be sandwiched between the two buoyancy structure main bodies 30, and bolts 32, nuts 33, etc. The connecting portions 2A and 2B are fixed so as to be sandwiched by appropriate fixing tools.
At this time, the buoyancy portion 31 is fixed at the same position as the buoyancy bodies 13A and 13B provided in the oil fence bodies 1A and 1B, so that the upper end of the oil fence has a constant height. A stable use state can be obtained.
With this configuration, the buoyancy part 31 of the buoyancy structure 3 is located at the same position as the buoyancy bodies 13A and 13B of the oil fence, and the connection parts 2A and 2B of the oil fence sandwiched by the buoyancy structure are provided. Buoyancy works so as to stand up, and even in bad weather, oil can be prevented from flowing away from the connecting portion, and the specific water area can be completely closed by the oil fence.

図３は、第２の実施の形態の例を示している。
この例では、補修用等のスペア浮力体３４、または壊れたオイルフェンスの浮力体部分を廃棄せずに再使用するもので、この場合には、前記浮力構造体本体３０を特に設けずに、スペア浮力体３４を通常のオイルフェンス本体１Ａ，１Ｂのスカート部１１Ａ，１１Ｂに取り付けるボルトナット１２の固定機構をそのまま利用することが出来る。
なお、この補修用等のスペア浮力体３４は、図３に示すように、縦方向に使用するため、浮力がありすぎる可能性があるため、スペア浮力体３４の下方にバランスウエイト３５を設ける構成として、スペア浮力体３４による浮力の調整を行うことで、連結部の倒れ込みを防止することが出来る。 FIG. 3 shows an example of the second embodiment.
In this example, the spare buoyancy body 34 for repair or the like, or the buoyancy body portion of the broken oil fence is reused without being discarded. In this case, the buoyancy structure main body 30 is not particularly provided, The fixing mechanism of the bolt nut 12 for attaching the spare buoyancy body 34 to the skirt portions 11A and 11B of the normal oil fence main bodies 1A and 1B can be used as it is.
Since the spare buoyancy body 34 for repair or the like is used in the vertical direction as shown in FIG. 3, there is a possibility that there is too much buoyancy. Therefore, the balance weight 35 is provided below the spare buoyancy body 34. As described above, by adjusting the buoyancy by the spare buoyancy body 34, it is possible to prevent the connecting portion from falling down.

本発明のオイルフェンスは、海や湖沼または河川などで、特定の水域を取り囲むようにして水面に浮かべることにより、流出した油の拡散を防止し環境汚染を防止するオイルフェンスに利用することができる。   The oil fence of the present invention can be used for an oil fence that prevents the spilled oil from diffusing and preventing environmental pollution by floating on the water surface so as to surround a specific water area in the sea, a lake or a river. .

本発明に係る第１の実施の形態の概略の斜視図である。1 is a schematic perspective view of a first embodiment according to the present invention. 本発明に係る第１の実施の形態の分解斜視図である。It is an exploded perspective view of a 1st embodiment concerning the present invention. 本発明に係る第２の実施の形態の概略の斜視図である。It is a schematic perspective view of 2nd Embodiment which concerns on this invention. 従来のオイルフェンスの正面図である。It is a front view of the conventional oil fence. 図４のＡ−Ａ線拡大断面説明図である。It is an AA line expanded sectional explanatory view of FIG.

符号の説明Explanation of symbols

１Ａ，１Ｂ オイルフェンス本体
１１Ａ，１１Ｂ スカート部
１２ ボルトナット
１３Ａ，１３Ｂ 浮力体
１４ 縫い込みロープ
１５ 鉛ロープ１
２Ａ，２Ｂ 連結部
２０ ファスナー
２１ シャックル
２２ ベルト
３ 浮力構造体
３０ 浮力構造体本体
３１ 浮力部
３２ ボルト
３３ ナット
３４ スペア浮力体
３５ バランスウエイト
1A, 1B Oil fence body 11A, 11B Skirt part 12 Bolt nut 13A, 13B Buoyant body 14 Sewing rope 15 Lead rope 1
2A, 2B connecting portion 20 fastener 21 shackle 22 belt 3 buoyancy structure body 30 buoyancy structure body 31 buoyancy portion 32 bolt 33 nut 34 spare buoyancy body 35 balance weight

Claims (4)

横長の幕状のスカート部が垂下され、両側面に浮力体を有している複数のオイルフェンス本体を、長手方向の端部同士で接続する連結部を備えたオイルフェンスにおいて、前記オイルフェンスの連結部を挟持するように、浮力構造体を設けることを特徴とするオイルフェンス。   An oil fence comprising a connecting portion for connecting a plurality of oil fence main bodies each having a buoyant body on both side surfaces with a horizontally long curtain-like skirt portion connected at the ends in the longitudinal direction. An oil fence, wherein a buoyancy structure is provided so as to sandwich the connecting portion. 請求項１記載の浮力構造体として、オイルフェンスに設けている浮力体のスペア浮力体或いは廃棄オイルフェンスの浮力体を用いることを特徴とするオイルフェンス。   An oil fence using a spare buoyancy body of a buoyancy body provided in an oil fence or a buoyancy body of a waste oil fence as the buoyancy structure according to claim 1. 請求項２記載のオイルフェンスにおいて、付加する浮力体の下方にバランスウエイトを設けることを特徴とするオイルフェンス。   The oil fence according to claim 2, wherein a balance weight is provided below the buoyancy body to be added. 浮力体を両側面に有し、横長の幕状のスカート部が垂下されている複数のオイルフェンス本体を、長手方向の端部同士で接続する連結部に連結し使用するオイルフェンスの使用方法において、少なくとも浮力体間の接続した前記連結部を起立するように浮力を与えつつ結合することを特徴とするオイルフェンスの使用方法。
In the method of using an oil fence, a plurality of oil fence bodies having buoyant bodies on both sides and having a horizontally long curtain-like skirt part suspended are connected to a connecting part that connects the ends in the longitudinal direction. A method of using an oil fence, characterized in that at least the connecting portion connected between buoyant bodies is coupled while giving buoyancy so as to stand upright.
JP2005264918A 2005-09-13 2005-09-13 Oil fence and its usage method Pending JP2007077627A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101328633B1 (en) * 2013-06-14 2013-11-14 이현화 Prevent damage from shock waves being silt protector

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54147022A (en) * 1978-05-05 1979-11-16 Philips Nv Recorder*reproducer
JPS5647231Y2 (en) * 1977-05-17 1981-11-05
JPH0340325A (en) * 1989-07-06 1991-02-21 Meidensha Corp Buffer type gas blast circuit breaker
JPH1177037A (en) * 1997-08-29 1999-03-23 Kaijo Hoanchiyou Chokan Method and apparatus for recovering oil
JP2000054355A (en) * 1998-08-10 2000-02-22 Taiyo Kogyo Kk Underwater diffusion prevention apparatus against polluted water
JP2003221823A (en) * 2002-12-20 2003-08-08 Kunio Miyazaki Oil fence

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5647231Y2 (en) * 1977-05-17 1981-11-05
JPS54147022A (en) * 1978-05-05 1979-11-16 Philips Nv Recorder*reproducer
JPH0340325A (en) * 1989-07-06 1991-02-21 Meidensha Corp Buffer type gas blast circuit breaker
JPH1177037A (en) * 1997-08-29 1999-03-23 Kaijo Hoanchiyou Chokan Method and apparatus for recovering oil
JP2000054355A (en) * 1998-08-10 2000-02-22 Taiyo Kogyo Kk Underwater diffusion prevention apparatus against polluted water
JP2003221823A (en) * 2002-12-20 2003-08-08 Kunio Miyazaki Oil fence

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101328633B1 (en) * 2013-06-14 2013-11-14 이현화 Prevent damage from shock waves being silt protector

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