JP2002047646A - Penetrating method for underground cutoff plate - Google Patents
Penetrating method for underground cutoff plateInfo
- Publication number
- JP2002047646A JP2002047646A JP2000233957A JP2000233957A JP2002047646A JP 2002047646 A JP2002047646 A JP 2002047646A JP 2000233957 A JP2000233957 A JP 2000233957A JP 2000233957 A JP2000233957 A JP 2000233957A JP 2002047646 A JP2002047646 A JP 2002047646A
- Authority
- JP
- Japan
- Prior art keywords
- blocking plate
- engaging portion
- penetrating
- underground
- existing
- 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.)
- Granted
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、止水などを目的と
する地中遮断壁構築工法において、既設遮断板に後続の
遮断板を円滑に貫入する地中遮断板の貫入方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing an underground barrier wall for the purpose of stopping water or the like, and a method of penetrating an underground barrier plate smoothly penetrating an existing barrier plate with a subsequent barrier plate. .
【０００２】[0002]
【従来の技術】従来より、廃棄物による地下汚染の拡大
防止、調整池や河川堤防の封じ込めなどを目的として、
地中遮断壁を構築する場合、通常、地中に適宜幅の矢
板、止水板などの遮断板を幅方向に順次に接続しながら
打設する方法が採られている。2. Description of the Related Art Conventionally, for the purpose of preventing the spread of underground pollution due to waste, and containing regulating ponds and river embankments,
When constructing an underground blocking wall, a method is generally employed in which a blocking plate such as a sheet pile or a water blocking board having an appropriate width is sequentially connected in the width direction under the ground.
【０００３】遮断板は、主として厚さが薄くても剛性を
示す鋼板や可撓性の合成樹脂製のシートが使用され、例
えば、図１に示すように、遮断板の有効幅Ｗが約１〜
１．５ｍ、板長Ｈが打設深度により異なる有効長さを有
するシート本体部１と、貫入フレームにセットする際の
下部掴みしろ１６と、隣接の遮断板と係合する両端の係
合部２、３を有する遮断板１０ａ、１０ｂが知られてい
る。[0003] The shielding plate is mainly made of a steel plate or a sheet made of a flexible synthetic resin which exhibits rigidity even if the thickness is small. For example, as shown in FIG. ~
1.5 m, the sheet main body 1 having a plate length H having an effective length that differs depending on the driving depth, a lower gripping margin 16 for setting on a penetrating frame, and engaging portions at both ends to be engaged with an adjacent blocking plate. A barrier plate 10a, 10b having two or three is known.
【０００４】そして、遮断板の地中への貫入は、貫入フ
レームを使用して行い、遮断板のメス係合部の下端部を
地中縦方向に既に埋設されている遮断板のオス係合部に
係合させながら地中に連行する。この場合、該メス係合
部の下端部は地盤の抵抗を受けるため変形し易く、この
変形によって、オス係合部とメス係合部の係合が円滑に
行われず、遂には該係合が噛み合わず、係合が行われな
いまま後続の遮断板が地中に貫入されることがある。[0004] Penetration of the blocking plate into the ground is performed by using a penetration frame, and the lower end of the female engaging portion of the blocking plate is engaged with the male engagement of the blocking plate already buried in the ground vertically. Entrained in the ground while engaging the part. In this case, the lower end of the female engaging portion is easily deformed due to the resistance of the ground, and due to this deformation, the male engaging portion and the female engaging portion are not smoothly engaged. There is a possibility that the subsequent blocking plate may penetrate into the ground without engaging, without being engaged.
【０００５】この問題を解決するものとして、メス係合
部の外周を覆ってメス係合部の変形を阻止する補強具を
可撓性遮断板のメス係合部の下端に設け、地中連行時に
おける形状変形を阻止する方法が開示されている（実公
平７−３５８６０号公報）。また、上記オス係合部とメ
ス係合部の係合状態が正常か否かを判断する方法とし
て、特開２０００−１３６５２９号公報には、後続の遮
水シートを既設の遮水シートに係合するに際し、小型の
先行ピースを予め既設の遮水シート側に係合しておき、
後続の遮水シートの貫入により押されて既設の遮水シー
トに沿って下降される先行ピースの移動量を計測するこ
とにより、既設の遮水シートに対する後続の遮水シート
の係合状態が正常か、否かを判断する方法が開示されて
いる。In order to solve this problem, a reinforcing member for covering the outer periphery of the female engaging portion and preventing deformation of the female engaging portion is provided at the lower end of the female engaging portion of the flexible blocking plate, and is driven underground. A method of preventing shape deformation at the time is disclosed (Japanese Utility Model Publication No. 7-35860). Japanese Patent Laid-Open No. 2000-136529 discloses a method for determining whether or not the engagement state between the male engaging portion and the female engaging portion is normal. When joining, a small preceding piece is engaged in advance with the existing impermeable sheet side,
By measuring the amount of movement of the preceding piece that is pushed down by the penetration of the following impermeable sheet and descends along the existing impermeable sheet, the state of engagement of the succeeding impermeable sheet with the existing impermeable sheet is normal. A method is disclosed for determining whether or not it is not.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、補強具
を遮断板のメス係合部の下端に付設する方法は、地中連
行時における形状変形を阻止する点でそれになりの効果
を奏するものの、係合部内に周辺の土砂などを噛み込む
ことに起因する貫入抵抗の増大や貫入不能の問題までは
解決できない。また、先行ピースの付設により係合状態
の正常異常を判断する方法は、オス係合部とメス係合部
の係合状態が正常か否かを簡易に判断できる点で有用な
技術ではあるものの、係合状態が不具合となる要因を除
去するものではない。すなわち、上述のような係合部内
の周辺の土砂などの噛み込みは到底防止できるものでは
ない。また、先行ピースは既設の遮水シートのオス係合
部に付設されるが、かかる係合部に周辺の土砂などが進
入し噛み込んでしまうと、以後の先行ピースの移動が制
限され、その機能を発揮できないという問題がある。However, the method of attaching the reinforcing member to the lower end of the female engaging portion of the blocking plate has a certain effect in preventing shape deformation during underground entrainment. It is not possible to solve the problem of increased penetration resistance or inability to penetrate due to biting of surrounding earth and sand into the joint. Further, the method of determining whether the engagement state is normal or abnormal by attaching the preceding piece is a useful technique in that it is possible to easily determine whether the engagement state between the male engagement portion and the female engagement portion is normal or not. However, this does not eliminate the cause of the malfunction of the engagement state. That is, biting of the surrounding earth and sand in the engaging portion as described above cannot be prevented at all. In addition, the preceding piece is attached to the male engaging portion of the existing water-impervious sheet, but if the surrounding soil or the like enters and bites into the engaging portion, the movement of the preceding preceding piece is limited, and There is a problem that the function cannot be exhibited.
【０００７】[0007]
【発明が解決しようとする課題】従って、本発明の目的
は、地中縦方向に貫入された既設の遮断板に対し、後続
の遮断板を互いに隣接するオス係合部とメス係合部を係
合しつつ貫入し地中遮断壁を構築する方法において、既
設遮断板に後続の遮断板を円滑に貫入する地中遮断板の
貫入方法を提供することにある。SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method for connecting a subsequent blocking plate to a male engaging portion and a female engaging portion adjacent to each other with respect to an existing blocking plate penetrating vertically in the ground. An object of the present invention is to provide a method of constructing an underground barrier wall that is engaged with and penetrates into an underground barrier plate to smoothly penetrate an existing barrier plate with a subsequent barrier plate.
【０００８】[0008]
【課題を解決するための手段】かかる実情において、本
発明者らは鋭意検討を行った結果、後続の遮断板を既設
の遮断板に係合する際、前記既設遮断板の未係合のオス
係合部、換言すれば、係合直前のオス係合部周りを圧力
流体のジェット噴流で洗浄し土砂などを排除し、その洗
浄されたオス係合部に後続の遮断板を係合し貫入させれ
ば、既設遮断板に後続の遮断板を円滑に貫入することが
できることなどを見出し、本発明を完成するに至った。Under such circumstances, the inventors of the present invention have conducted intensive studies and as a result, when a subsequent blocking plate is engaged with an existing blocking plate, an unengaged male of the existing blocking plate is engaged. The surroundings of the engaging portion, in other words, the area around the male engaging portion immediately before the engagement is washed with a jet jet of a pressure fluid to remove earth and sand, etc., and a subsequent blocking plate is engaged with the washed male engaging portion to penetrate. By doing so, they have found out that the subsequent blocking plate can smoothly penetrate the existing blocking plate, and have completed the present invention.
【０００９】すなわち、本発明（１）は、遮断板の縦方
向両側部にオス係合部とメス係合部の一方をそれぞれ有
し、地中縦方向に貫入された既設の遮断板に対し、貫入
フレームの一側面に着脱自在に取付けられた後続の遮断
板を互いに隣接するオス係合部とメス係合部を係合しつ
つ貫入し地中遮断壁を構築する方法において、前記既設
遮断板の係合前状態にあるオス係合部周りに圧力流体を
噴射し、該オス係合部を洗浄しながら、該既設の遮断板
に前記後続の遮断板を係合しつつ貫入する地中遮断板の
貫入方法を提供するものである。かかる構成を採ること
により、後続の遮断板を既設の遮断板に係合する際、係
合直前のオス係合部周りを圧力流体のジェットで洗浄し
土砂などを排除でき、その洗浄されたオス係合部に後続
の遮断板を係合し貫入させるため、既設遮断板に後続の
遮断板を極めて円滑に貫入することができる。That is, the present invention (1) has one of a male engaging portion and a female engaging portion on both sides in the vertical direction of the shielding plate, respectively, and is provided with respect to the existing shielding plate which penetrates vertically in the ground. A method of constructing an underground blocking wall by penetrating a subsequent blocking plate detachably attached to one side surface of a penetration frame while engaging a male engaging portion and a female engaging portion adjacent to each other to form an underground blocking wall. An underground in which a pressure fluid is jetted around the male engaging portion in a state before the plate is engaged, and the male engaging portion is washed while the subsequent blocking plate is engaged with the existing blocking plate while penetrating therethrough. It is intended to provide a method for penetrating a shielding plate. By adopting such a configuration, when the subsequent blocking plate is engaged with the existing blocking plate, the area around the male engaging portion immediately before the engagement can be washed with a jet of pressure fluid to remove earth and sand, and the washed male can be removed. Since the subsequent blocking plate is engaged with the engaging portion and penetrates, the subsequent blocking plate can be very smoothly penetrated into the existing blocking plate.
【００１０】また、本発明（２）は、前記圧力流体は、
前記貫入フレームの下方の係合位置側近傍に付設された
圧力流体噴射口から噴射されるものである前記（１）記
載の地中遮断板の貫入方法を提供するものである。かか
る構成を採ることにより、洗浄対象である係合前のオス
係合部近傍には、貫入フレームの係合位置側の端部が貫
入深度にかかわらず常に近接しているため、この貫入フ
レームに圧力流体噴射口及び圧力流体噴射口に連通する
流体通路を設けることが容易であり、既存設備の少しの
改良で極めて円滑な係合状態を得ることができる。Further, according to the present invention (2), the pressure fluid is
(1) The method for penetrating an underground blocking plate according to the above (1), wherein the submerged frame is ejected from a pressure fluid ejection port provided in the vicinity of an engagement position below the penetration frame. By adopting such a configuration, the end on the engagement position side of the penetration frame is always close to the male engagement portion before engagement to be cleaned regardless of the penetration depth. It is easy to provide a pressure fluid ejection port and a fluid passage communicating with the pressure fluid ejection port, and a very smooth engagement can be obtained with a slight improvement of existing equipment.
【００１１】[0011]
【発明の実施の形態】本発明の実施の形態における地中
遮断板の貫入方法を図１〜図３を参照して説明する。図
１は本実施の形態例における地中遮断板の貫入方法を説
明する図、図２は図１の係合部周りの拡大図、図３は図
２のＡ−Ａ線に沿って見た図をそれぞれ示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for penetrating an underground barrier plate according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a view for explaining a method of penetrating the underground blocking plate in the present embodiment, FIG. 2 is an enlarged view around the engaging portion in FIG. 1, and FIG. 3 is a view along line AA in FIG. The figures are shown respectively.
【００１２】本発明の地中遮断板の貫入方法は、公知の
方法が適用される。具体的には、先ず複数の地中遮断板
１０ａ、１０ｂ・・が準備される。図１〜図３で示され
るように地中遮断板１０ａ、１０ｂは、互いに同形状で
あり、シート本体部１の縦方向両側部に係合オス部材２
と係合メス部材３の一方をそれぞれ溶着してなる可撓性
の合成樹脂製遮断板である。係合オス部材２は、オス係
合部４と、このオス係合部４と一体化されシート本体部
１に溶着する基部５とからなる。係合メス部材３は、メ
ス係合部８と、このメス係合部８と一体化されシート本
体部１に溶着する基部７とからなる。オス係合部４とメ
ス係合部８は、互いに係合可能な構造である。また、本
実施の形態例における遮断板１０ｂのメス係合部側の下
方部は洗浄ジェット噴射口６５からのジェット噴流の障
害とならないようその一部１０１が切り欠かれている。A known method is applied to the method of penetrating the underground barrier plate of the present invention. Specifically, first, a plurality of underground blocking plates 10a, 10b,... Are prepared. As shown in FIGS. 1 to 3, the underground blocking plates 10 a and 10 b have the same shape as each other, and the engaging male members 2
And one of the engaging female members 3 is a flexible synthetic resin blocking plate formed by welding. The male engaging member 2 includes a male engaging portion 4 and a base 5 integrated with the male engaging portion 4 and welded to the seat body 1. The engaging female member 3 includes a female engaging portion 8 and a base 7 integrated with the female engaging portion 8 and welded to the seat body 1. The male engaging portion 4 and the female engaging portion 8 have a structure capable of engaging with each other. Further, a part 101 of the lower portion of the blocking plate 10b on the female engaging portion side in the present embodiment is cut away so as not to hinder the jet jet from the cleaning jet jet port 65.
【００１３】貫入フレーム６は図では省略するベースマ
シンなどにより起立支持された支持リーダー１４に沿っ
て昇降されるものであり、支持基板部６１と、支持基板
部６１に一体化され両側端を画するガイド部６２、６２
からなる。ガイド部６２は、鋼管部材であり、その内部
には小径の鋼管部材である圧力流体通路６３が付設され
ている。圧力流体通路６３は上方側は圧力流体供給源に
接続され、下方側は下方噴射口６７と、下方噴射口６７
のやや上方から斜め下方に分岐し、係合貫入時の既設遮
断板１０ａのオス係合部４に向けて開口する洗浄ジェッ
ト噴射口６５にそれぞれ連接している。なお、洗浄ジェ
ット噴射口６５の噴射角度は、上記斜め下方向に限定さ
れず、水平方向あるいは下方噴射口６７の直上に設け、
斜め上方向としてもよい。The penetrating frame 6 is raised and lowered along a support leader 14 which is supported upright by a base machine or the like (not shown). The support frame 61 is integrated with the support frame 61 to define both ends. Guide portions 62, 62
Consists of The guide portion 62 is a steel pipe member, and a pressure fluid passage 63 as a small-diameter steel pipe member is additionally provided inside the guide portion 62. The upper side of the pressure fluid passage 63 is connected to a pressure fluid supply source, and the lower side is a lower outlet 67 and a lower outlet 67.
It is branched from slightly above and diagonally downward, and is connected to the cleaning jet outlet 65 that opens toward the male engaging portion 4 of the existing blocking plate 10a when the engagement penetrates. Note that the injection angle of the cleaning jet injection port 65 is not limited to the above obliquely downward direction, and is provided in the horizontal direction or directly above the lower injection port 67,
The direction may be obliquely upward.
【００１４】圧力流体通路６３に供給される圧力流体と
しては、空気、水及び空気と水の混合物などの加圧され
たものが挙げられ、このうち、ポンプによる圧送水が使
いやすさ、噴射後の取扱性などの点で好適である。下方
噴射口６７は本発明では任意の構成要素であるが、貫入
フレーム６の下端の複数箇所に設置することが、後続の
遮断板１０ｂの貫入抵抗を低減する点で好ましい。The pressurized fluid supplied to the pressurized fluid passage 63 includes a pressurized fluid such as air, water, and a mixture of air and water. It is suitable in terms of handleability. Although the lower injection port 67 is an optional component in the present invention, it is preferable to install the lower injection port at a plurality of locations at the lower end of the penetration frame 6 from the viewpoint of reducing the penetration resistance of the subsequent blocking plate 10b.
【００１５】遮断板１０ｂの貫入フレーム６への取付け
は、公知の方法で行えばよい。すなわち、遮断板１０ｂ
の掴みしろ１６の裏面に断面がＬ字状の係合片を幅方向
に設け、これを貫入フレーム６の下端に引っかけてシー
ト本体部を上方に引っ張り緊張状態とする。次いで、遮
断板１０ｂの上方に設けたフック状係合片１２をその緊
張状態を維持して、貫入フレーム６へ取付ける。The attachment of the blocking plate 10b to the penetration frame 6 may be performed by a known method. That is, the blocking plate 10b
An engaging piece having an L-shaped cross section is provided in the width direction on the back surface of the gripping margin 16 of this, and the engaging piece is hooked on the lower end of the penetrating frame 6 to pull the seat body upward and in a tensioned state. Next, the hook-shaped engaging piece 12 provided above the blocking plate 10b is attached to the penetrating frame 6 while maintaining its tension state.
【００１６】遮断板１０ａの貫入は、貫入機により剛性
に富む貫入フレーム６と共に地中に貫入し、所定深さに
貫入した後、遮断板１０ａを残して貫入フレームを引き
上げることにより行われる。次で、遮断板１０ｂを同様
の方法で貫入する。この遮断板１０ｂの貫入は、貫入す
る遮断板１０ｂのメス係合部８の下端部を地中縦方向に
既に貫入されている遮断板１０ａのオス係合部４に係合
させ、且つ紐状のシール材１３をオス係合部４の先端で
メス係合部８内に配しながら行う。この場合、圧力流体
通路６３に圧力流体を供給し、下方噴射口６７及び洗浄
ジェット噴射口６５からそれぞれ圧力流体を噴射する。
下方噴射口６７から圧力流体を噴射することにより、貫
入地盤を緩い地盤として後続遮断板１０ｂの貫入抵抗を
低減することができる。また、洗浄ジェット噴射口６５
から圧力流体を既設遮断板１０ａのオス係合部に向けて
噴射することにより、該オス係合部に付着している土砂
類を吹き飛ばし、洗浄されたオス係合部４を後続遮断板
１０ｂのメス係合部８と係合させることができる。The penetrating plate 10a is penetrated by a penetrating machine together with the rigid penetrating frame 6 into the ground, and after penetrating to a predetermined depth, the penetrating frame is lifted up leaving the blocking plate 10a. Next, the blocking plate 10b is penetrated in the same manner. The penetration of the blocking plate 10b is performed by engaging the lower end of the female engaging portion 8 of the penetrating blocking plate 10b with the male engaging portion 4 of the blocking plate 10a that has already penetrated in the vertical direction underground. The sealing material 13 is disposed inside the female engaging portion 8 at the tip of the male engaging portion 4. In this case, the pressure fluid is supplied to the pressure fluid passage 63, and the pressure fluid is ejected from the lower ejection port 67 and the cleaning jet ejection port 65, respectively.
By injecting the pressurized fluid from the lower injection port 67, the penetration ground can be made a loose ground, and the penetration resistance of the subsequent blocking plate 10b can be reduced. In addition, the cleaning jet injection port 65
By spraying the pressure fluid from above to the male engaging portion of the existing blocking plate 10a, the sediment adhering to the male engaging portion is blown off, and the cleaned male engaging portion 4 is removed from the subsequent blocking plate 10b. It can be engaged with the female engaging portion 8.
【００１７】本発明において、後続の遮断板を既設の遮
断板に係合するに際し、小型の先行ピースを予め既設の
遮断板側に係合しておき、後続の遮断板の貫入により押
されて既設の遮断板に沿って下降される先行ピースの移
動量を計測することにより、既設の遮断板に対する後続
の遮断板の係合状態が正常か、否かを判断する方法を使
用してもよい。この場合、洗浄ジェット噴射口６５から
の圧力流体の噴射は、先行ピースより下方のオス係合部
とすることが、洗浄されたオス係合部と先行ピースの係
合も円滑に行える点で好適である。In the present invention, when the subsequent blocking plate is engaged with the existing blocking plate, a small preceding piece is engaged with the existing blocking plate in advance, and is pushed by the penetration of the subsequent blocking plate. A method of determining whether the engagement state of the subsequent blocking plate with the existing blocking plate is normal or not by measuring the amount of movement of the preceding piece lowered along the existing blocking plate may be used. . In this case, the injection of the pressure fluid from the cleaning jet injection port 65 is preferably performed at the male engaging portion below the preceding piece, since the cleaned male engaging portion and the preceding piece can be smoothly engaged with each other. It is.
【００１８】上記の施工方法により得られた遮断板１０
ａの係合部と遮断板１０ｂの係合形態は、図３に示され
るように、係合オス部材２と係合メス部材３（図３では
二点鎖線で示される）の係合が確実に行われており、且
つ係合隙間に水膨張性シール材１３を介在せしめて高い
水密性を保持する構造を採っている。従って、廃棄物に
よる地下汚染の拡大防止、調整池や河川堤防の封じ込め
を目的とする地中遮断板を確実に構築できる。The blocking plate 10 obtained by the above-described construction method
As shown in FIG. 3, the engagement between the engagement portion a and the blocking plate 10b ensures that the engagement between the engagement male member 2 and the engagement female member 3 (indicated by a two-dot chain line in FIG. 3). And a structure is employed in which a water-swellable sealing material 13 is interposed in the engagement gap to maintain high watertightness. Therefore, it is possible to reliably construct an underground cut-off plate for preventing the spread of underground pollution by waste and for containing a regulating pond and a river embankment.
【００１９】[0019]
【発明の効果】本発明によれば、後続の遮断板を既設の
遮断板に係合する際、係合直前のオス係合部周りを流体
のジェット噴流で洗浄し土砂などを排除でき、その洗浄
されたオス係合部に後続の遮断板を係合し貫入させるた
め、既設遮断板に後続の遮断板を極めて円滑に貫入する
ことができる。また、本発明によれば、洗浄対象である
係合前のオス係合部近傍には、貫入フレームの係合位置
側の端部が常に近接しており、この貫入フレームに圧力
流体噴射口及び圧力流体噴射口に連通する流体通路を設
けることも容易であり、既存設備の少しの改良で極めて
優れた係合状態を得ることができる。According to the present invention, when the subsequent blocking plate is engaged with the existing blocking plate, the area around the male engaging portion immediately before the engagement can be washed with a jet jet of fluid to remove earth and sand. Since the following blocking plate is engaged with and penetrated into the cleaned male engaging portion, the subsequent blocking plate can be very smoothly penetrated into the existing blocking plate. Further, according to the present invention, the end on the engagement position side of the penetration frame is always close to the vicinity of the male engagement portion before the engagement to be cleaned, and the pressure fluid injection port and the It is easy to provide a fluid passage communicating with the pressure fluid injection port, and an extremely excellent engagement state can be obtained with a slight improvement of existing equipment.
【図１】本実施の形態例における地中遮断板の貫入方法
を説明する図である。FIG. 1 is a diagram illustrating a method of penetrating an underground barrier plate according to an embodiment of the present invention.
【図２】図１の係合部周りの拡大図である。FIG. 2 is an enlarged view around an engagement portion of FIG. 1;
【図３】図２のＡ−Ａ線に沿って見た図である。FIG. 3 is a view taken along line AA of FIG. 2;
【符号の説明】 １ シート本体部 ２ 係合オス部材 ３ 係合メス部材 ４ オス係合部 ５ 基部（オス側） ６ 貫入フレーム ７ 基部（メス側） ８ メス係合部 １０ａ、１０ｂ 地中遮断板 １３ 水膨潤性シール材 １６ 掴みしろ ６１ 支持基板部 ６２ ガイド部 ６３ 圧力流体通路 ６４、６６ ジェット噴流 ６５ 洗浄ジェット噴射口 ６７ 下方噴射口[Description of Signs] 1 Seat main body 2 Engaging male member 3 Engaging female member 4 Male engaging portion 5 Base (male side) 6 Penetrating frame 7 Base (female side) 8 Female engaging portion 10a, 10b Underground cutoff Plate 13 water-swellable sealing material 16 gripping margin 61 support substrate section 62 guide section 63 pressure fluid passage 64, 66 jet jet 65 cleaning jet jet 67 lower jet jet
Claims (2)
ス係合部の一方をそれぞれ有し、地中縦方向に貫入され
た既設の遮断板に対し、貫入フレームの一側面に着脱自
在に取付けられた後続の遮断板を互いに隣接するオス係
合部とメス係合部を係合しつつ貫入し地中遮断壁を構築
する方法において、前記既設遮断板の係合前状態にある
オス係合部周りに圧力流体を噴射し、該オス係合部を洗
浄しながら、該既設の遮断板に前記後続の遮断板を係合
しつつ貫入することを特徴とする地中遮断板の貫入方
法。The present invention has one of a male engaging portion and a female engaging portion on both sides in the vertical direction of a blocking plate, and is provided on one side surface of a penetrating frame with respect to an existing blocking plate penetrating vertically in the ground. In a method of constructing an underground blocking wall by penetrating a detachably attached subsequent blocking plate while engaging a male engaging portion and a female engaging portion adjacent to each other, the undercutting state of the existing blocking plate is established. An underground blocking plate, which injects a pressure fluid around a certain male engaging portion and penetrates the existing blocking plate while engaging the subsequent blocking plate while cleaning the male engaging portion. How to penetrate.
方の係合位置側近傍に付設された圧力流体噴射口から噴
射されるものである請求項１記載の地中遮断板の貫入方
法。2. The method according to claim 1, wherein the pressure fluid is ejected from a pressure fluid ejection port provided in the vicinity of an engagement position below the penetration frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000233957A JP4497390B2 (en) | 2000-08-02 | 2000-08-02 | Penetration method of underground shielding plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000233957A JP4497390B2 (en) | 2000-08-02 | 2000-08-02 | Penetration method of underground shielding plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002047646A true JP2002047646A (en) | 2002-02-15 |
| JP4497390B2 JP4497390B2 (en) | 2010-07-07 |
Family
ID=18726402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000233957A Expired - Fee Related JP4497390B2 (en) | 2000-08-02 | 2000-08-02 | Penetration method of underground shielding plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4497390B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012167497A (en) * | 2011-02-15 | 2012-09-06 | Okumura Corp | Chemical injection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4919562B1 (en) * | 1970-09-22 | 1974-05-18 | ||
| JPS61196016A (en) * | 1985-02-27 | 1986-08-30 | Toa Harbor Works Co Ltd | Joining method for cut-off sheet |
| JP2000096566A (en) * | 1998-09-22 | 2000-04-04 | Kokichi Kameda | Water jet preceeding machine in steel sheet pile joint section |
-
2000
- 2000-08-02 JP JP2000233957A patent/JP4497390B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4919562B1 (en) * | 1970-09-22 | 1974-05-18 | ||
| JPS61196016A (en) * | 1985-02-27 | 1986-08-30 | Toa Harbor Works Co Ltd | Joining method for cut-off sheet |
| JP2000096566A (en) * | 1998-09-22 | 2000-04-04 | Kokichi Kameda | Water jet preceeding machine in steel sheet pile joint section |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012167497A (en) * | 2011-02-15 | 2012-09-06 | Okumura Corp | Chemical injection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4497390B2 (en) | 2010-07-07 |
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