JP2004360440A - Water cut-off method for water cut-off wall joint part - Google Patents

Water cut-off method for water cut-off wall joint part Download PDF

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JP2004360440A
JP2004360440A JP2003272427A JP2003272427A JP2004360440A JP 2004360440 A JP2004360440 A JP 2004360440A JP 2003272427 A JP2003272427 A JP 2003272427A JP 2003272427 A JP2003272427 A JP 2003272427A JP 2004360440 A JP2004360440 A JP 2004360440A
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water
stopping
stopping material
joint portion
water cut
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JP4160876B2 (en
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Takahiko Ito
隆彦 伊藤
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Taisei Rotec Corp
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Taisei Rotec Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a water cut-off method for a water cut-off wall joint part capable of being economically filled with a water cut-off material by a simple facility to increase the water cut-off performance of a water cut-off wall and capable of being repaired. <P>SOLUTION: This water cut-off method for the joint part 12 of a steel pipe sheet pile 10 having a water cut-off material filling space 15 comprises a water cutting material inserting step for inserting the water cut-off material 30 having water cut-off performance, formable in any shape at room temperature, having follow-up capability, and having a performance to be molten by heating into the water cut-off material filling space 15 and a water cut-off material melting step for melting the water cut-off material 30 and filling the water cut-off material into the water cut-off material filling space 15. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、地中又は（海）水中に連続して配置してなる止水壁の継手部の止水方法に関する。   The present invention relates to a method for stopping water at a joint portion of a water stop wall continuously arranged in the ground or (sea) water.

従来、鋼管矢板等を列状に打設して止水壁を構築する際に、その継手部にモルタルやアスファルト混合物を充填することで、その止水性を高める工法が採用されている。なかでも、アスファルトマスチックは、加熱することで流動性を有し、継手部に流し込むことで隙間無く充填することが可能なうえ、その後冷固した状態では止水性に優れ、塑性変形する性質を有することで止水壁の多少の変形にも対応可能な材質であることから、信頼度が高く、施工実績も多い。   BACKGROUND ART Conventionally, when constructing a water-blocking wall by laying steel pipe sheet piles or the like in a row, a method of increasing the water-blocking property by filling a joint portion with a mortar or asphalt mixture has been adopted. Above all, asphalt mastic has fluidity by heating, and can be filled without gaps by pouring into joints, and then has excellent water stopping properties and plastic deformation properties when cooled. Since the material is able to cope with some deformation of the water stop wall, the reliability is high and the construction results are large.

しかし、アスファルトマスチックを継手部の止水材として用いる場合において、単に止水材を流し込む方法では、継手部内の土砂や泥水などと混合してしまい空隙が生じ、充填が不完全になる場合がある。そのため、特許文献１には、パイプを継手部に挿入し、圧送装置などによりパイプを引き上げながら止水材を泥水や土砂と混合しないように注入することで、継手部の充填を行う止水壁継手部の止水方法が開示されている。また、同文献には、継手部の深度が深いなどの理由により、注入途中に止水材の温度が低下して流動性を失うことで、充填が不十分となる恐れがある場合においては、注入パイプに保温性をもたらす手段や加熱手段を設ける止水壁継手部の止水方法、または継手部に加熱手段を設ける等の処理を施す止水壁継手部の止水方法が開示されている。
特開２００２−３０９５６９号公報（［００２４］〜［００３２］、図１３） However, in the case where asphalt mastic is used as a water-stopping material for the joint portion, a method of simply pouring the water-stopping material mixes with the earth and sand or muddy water in the joint portion to form a void, and the filling may be incomplete. . For this reason, Patent Literature 1 discloses a water stop wall for filling a joint part by inserting a pipe into a joint part and injecting a water stopping material so as not to mix with muddy water or earth and sand while pulling up the pipe by a pumping device or the like. A method for stopping water at a joint is disclosed. In addition, in the same document, due to the fact that the temperature of the water-stopping material decreases during injection and loses fluidity due to a reason such as a deep depth of the joint portion, there is a possibility that the filling may be insufficient, Disclosed is a method for stopping water at a water stop wall joint portion that provides a means for providing heat retention and a heating means to an injection pipe, or a method for stopping water at a water stop wall joint portion that performs processing such as providing a heating means at a joint portion. .
JP-A-2002-309569 ([0024] to [0032], FIG. 13)

しかしながら、上述の止水壁継手部の止水方法では、下記に示すような問題点がある。
（１）止水材注入時に、止水材の流動性を低下させないために、その温度を１５０〜２００度程度に維持する必要があり、注入前の止水材を溶融する加熱設備の他に、注入用のパイプの保温や加熱に必要な設備または止水壁継手部の加熱設備が必要となり、その設置等に手間がかかり、また費用もかさむ。
（２）止水壁自体に何らかの力が加わることにより大きな変形が生じた場合、継手部に空隙ができ、漏水する恐れがある。 However, the above-described method for stopping water at the water-stop wall joint has the following problems.
(1) At the time of pouring the water-stopping material, it is necessary to maintain the temperature at about 150 to 200 degrees in order not to lower the fluidity of the water-stopping material. In addition, equipment necessary for keeping and heating the pipe for injection or heating equipment for the joint of the water stop wall is required, and the installation and the like are troublesome and costly.
(2) When a large deformation occurs due to the application of some force to the water blocking wall itself, a gap is formed in the joint portion, and there is a risk of water leakage.

本発明は、前記の問題点を解決することを目的とするものであり、止水壁の止水性を高めるために、継手部を簡易な設備にて経済的に充填することが可能で、且つ補修可能な止水壁の継手部の止水方法に関する。   The present invention has been made to solve the above problems, and in order to increase the water stoppage of the water stop wall, it is possible to economically fill the joint portion with simple equipment, and The present invention relates to a method for stopping water at a joint portion of a waterproof wall that can be repaired.

このような課題を解決するために、請求項１に係る発明は、止水材充填空間を有する止水壁の継手部の止水方法において、止水性能を有し、常温時には任意形状に成型可能で追随性を有し、加熱により溶融する性能を有する止水材を、前記止水材充填空間に挿入する止水材挿入工程と、前記止水材を溶融させて、前記止水材充填空間に充填する止水材溶融工程とを含むことを特徴とする止水壁継手部の止水方法である。   In order to solve such a problem, the invention according to claim 1 has a water stopping performance in a water stopping method of a joint portion of a water stopping wall having a water stopping material filling space, and has a water stopping performance, and is formed into an arbitrary shape at normal temperature. A water-stopping material inserting step of inserting a water-stopping material having a capability of following and capable of melting by heating into the water-stopping material filling space, and melting the water-stopping material and filling the water-stopping material And a step of melting a water-stopping material for filling the space.

かかる止水壁継手部の止水方法は、任意の形状に成型した止水材を止水壁継手部が有する止水材充填空間に挿入し、溶融させることにより、止水材が止水壁継手部内の空隙に浸透し充填されるため、止水壁継手部の深度及び形状に関係なく確実に充填させることが可能となる。   Such a water-stopping method of the water-stopping wall joint portion includes inserting a water-stopping material molded into an arbitrary shape into a water-stopping material filling space of the water-stopping wall joint portion and melting the water-stopping material so that the water-stopping material is closed. Since the water penetrates into the gap in the joint portion and is filled, the filling can be reliably performed regardless of the depth and shape of the water blocking wall joint portion.

請求項２に係る発明は、請求項１に記載の止水壁継手部の止水方法であり、前記止水材充填空間に挿入する止水材には、予め発熱体が取り付けられてあることを特徴とする。   The invention according to claim 2 is the water stopping method for the water blocking wall joint part according to claim 1, wherein a heating element is previously attached to the water stopping material inserted into the water stopping material filling space. It is characterized by.

かかる止水壁継手部の止水方法は、止水材に予め発熱体を取り付けておくことにより、止水材充填空間に止水材を挿入後、発熱体の設置の手間を有することなく、発熱体を機能させることにより止水材が溶融し、止水壁継手部を隙間なく充填させることが可能となる。また、この発熱体を止水壁継手部に残置しておけば、何らかの力が止水壁に負荷することにより止水壁継手部が変形し、空隙が生じた場合においても、発熱体を再度機能させることにより、再び止水材が溶融し止水壁継手部を隙間なく充填することが可能となる。   The water stopping method of such a water stopping wall joint portion is to attach a heating element to the water stopping material in advance, and after inserting the water stopping material into the water stopping material filling space, without having to install the heating element. By functioning the heating element, the water blocking material is melted, and the water blocking wall joint can be filled without gaps. Also, if this heating element is left in the water stop wall joint, even if a water stop wall joint is deformed by applying some force to the water stop wall and a gap is generated, the heat generator is re-attached. By functioning, the water-stopping material is melted again, and the water-stopping wall joint can be filled without gaps.

請求項３に係る発明は、請求項１又は請求項２に記載の止水壁継手部の止水方法であり、前記止水壁の継手部は中空筒状形状であり、前記止水材は、前記継手部に挿入可能である柱体形状に成型されているアスファルトマスチックであることを特徴とする。この場合において、アスファルトマスチックの形状は、継手部より若干小さい柱体形状に形成されていることが好ましい。   The invention according to claim 3 is the method for stopping water of the water blocking wall joint part according to claim 1 or claim 2, wherein the water stopping wall joint part has a hollow cylindrical shape, and the water stopping material is It is an asphalt mastic molded into a column shape that can be inserted into the joint portion. In this case, the shape of the asphalt mastic is preferably formed in a column shape slightly smaller than the joint portion.

かかる止水壁継手部の止水方法は、止水壁の継手部が中空筒状形状であるため、止水材を柱体形状に成型しておくことで、容易に挿入することが可能となる。また、止水材に冷固後も追随性を有するアスファルトマスチックを使用することにより、止水壁継手部の多少の変形に対してはその追随性により対処することが可能で、また、止水壁継手部に大きな変形が生じ、空隙が生じた場合においても、再度加熱を施すことにより溶融し、止水壁継手部を隙間なく充填することが可能となる。
ここで、アスファルトマスチックとは、加熱することで流動性を発するアスファルト混合物であり、本発明のように水利構造物に使用する場合は、一般的に最大粒径１３ｍｍ程度以下の骨材を配合したものが用いられている。 In such a water stopping wall joint portion, since the water stopping wall joint portion has a hollow cylindrical shape, it is possible to easily insert the water stopping material by molding the water stopping material into a columnar shape. Become. In addition, the use of asphalt mastic, which has a follow-up property even after cooling as a water-stopping material, makes it possible to cope with some deformation of the water-stop wall joint by the follow-up property. Even in the case where a large deformation occurs in the wall joint portion and a gap is generated, the wall joint portion is melted by heating again, so that the water stop wall joint portion can be filled without gaps.
Here, the asphalt mastic is an asphalt mixture that emits fluidity when heated, and when used in a water structure as in the present invention, generally aggregates having a maximum particle size of about 13 mm or less are blended. Things are used.

請求項４に係る発明は、請求項１又は請求項２に記載の止水壁継手部の止水方法であり、前記止水壁の継手部は、開口部を有する中空筒状形状であり、前記止水材は、前記継手部に挿入可能である柱体形状に成型されているアスファルトマスチックであり、前記止水材の開口部側表面の少なくとも一部には止水材漏溢防止材が配置されていることを特徴とする。   The invention according to claim 4 is a method for stopping water at a water stop wall joint part according to claim 1 or claim 2, wherein the joint part of the water stop wall has a hollow cylindrical shape having an opening, The water-stopping material is an asphalt mastic molded into a pillar shape that can be inserted into the joint portion, and at least a part of the opening-side surface of the water-stopping material has a water-stopping material leakage prevention material. It is characterized by being arranged.

かかる止水壁継手部の止水方法は、止水壁構築の際に矢板の中心がずれた場合や、止水壁供用後に止水壁に大きな外力が負荷された場合等により、止水壁継手部に大きな隙間（開口部）が形成されたことが原因で、止水材溶融工程において止水材がこの隙間から流出することや、供用中に止水材が流出することが懸念される場合において、予め止水材の開口部側表面の少なくとも一部に止水材漏溢防止材を配置しておくことで、止水材の流出を防止することが可能となる。   Such a waterproofing method of the watertight wall joint portion is performed when the sheet pile is decentered during the construction of the watertight wall, or when a large external force is applied to the waterproof wall after the waterproof wall is put into service. Due to the formation of a large gap (opening) in the joint portion, there is a concern that the water stopping material may flow out of this gap in the water stopping material melting step, or that the water stopping material may flow out during operation. In this case, it is possible to prevent the waterproof material from flowing out by disposing the waterproof material leakage prevention material on at least a part of the opening-side surface of the waterproof material in advance.

請求項５に係る発明は、請求項１乃至請求項４のいずれか１項に記載の止水壁継手部の止水方法であり、前記止水壁の継手部の内面に、予めプライマーが塗布されていることを特徴とする。   The invention according to claim 5 is the method for stopping water from a joint of a waterproof wall according to any one of claims 1 to 4, wherein a primer is applied to an inner surface of the joint of the waterproof wall in advance. It is characterized by having been done.

かかる止水壁継手部の止水方法は、止水壁継手部の内面に予めカットバックアスファルト、アスファルト乳剤、アスファルト等からなるプライマーを塗布しておくことで、アスファルト混合物からなる止水材と鋼材等からなる止水壁との付着性を高め、止水材と止水壁継手部との間に空隙が生じることによる漏水を防ぐことができる。   Such a water stoppage method of the water stop wall joint portion is achieved by applying a primer made of cutback asphalt, asphalt emulsion, asphalt, or the like on the inner surface of the water stop wall joint portion in advance, so that the water stop material and the steel material made of the asphalt mixture are applied. Thus, it is possible to enhance the adhesion to the water blocking wall made of, for example, and prevent water leakage due to the formation of a gap between the water blocking material and the water blocking wall joint.

本発明の止水壁継手部の止水方法によれば、簡易な施工方法により確実に止水壁継手部への充填が可能であり、止水性が優れた止水方法とすることが可能となる。   According to the water stopping method of the water stopping wall joint portion of the present invention, it is possible to reliably fill the water stopping wall joint portion with a simple construction method, and it is possible to obtain a water stopping method with excellent water stopping performance. Become.

本発明の好適な実施の形態について、図面を参照して詳細に説明する。なお、説明において、同一要素には同一の符号を用い、重複する説明は省略する。   Preferred embodiments of the present invention will be described in detail with reference to the drawings. In the description, the same elements will be denoted by the same reference characters, without redundant description.

（第１の実施の形態）
図１は、第１の実施の形態による止水壁継手部の止水方法の作業手順を示したフローチャートであり、廃棄物処分場の周囲に列状に打設された鋼管矢板の継手部に止水性の止水材を充填するものである。
第１の実施の形態による止水壁継手部の止水方法は、図１及び図２に示すように、止水壁である鋼管矢板１０を列状に打設する鋼管矢板打設工程Ｓ１と、鋼管矢板１０の継手部１２に容易に止水材３０を挿入できるように止水材３０を成型する止水材成型工程Ｓ２と、成型した止水材３０を鋼管矢板継手部の空間（止水材充填空間１５）に挿入する止水材挿入工程Ｓ３と、鋼管矢板継手部の空間（止水材充填空間１５）内で止水材３０を溶融して充填する止水材溶融工程Ｓ４との手順に従い行う。 (First Embodiment)
FIG. 1 is a flowchart showing an operation procedure of a water stopping method of a water blocking wall joint portion according to the first embodiment, in which a joint portion of a steel pipe sheet pile driven around in a row around a waste disposal site. It is filled with a water-stopping material.
As shown in FIG. 1 and FIG. 2, the water stopping method of the water stopping wall joint portion according to the first embodiment includes a steel pipe sheet pile driving step S <b> 1 in which steel pipe sheet piles 10 as water stopping walls are driven in rows. A water-stopping material forming step S2 of molding the water-stopping material 30 so that the water-stopping material 30 can be easily inserted into the joint portion 12 of the steel pipe sheet pile 10; A water-stop material insertion step S3 to be inserted into the water-material filling space 15), and a water-stop material melting step S4 to melt and fill the water-stop material 30 in the space (water-stop material filling space 15) of the steel pipe sheet pile joint. Perform according to the procedure.

（１）鋼管矢板打設工程Ｓ１
まず、鋼管矢板１０を打設する。
本実施の形態では、図２（ａ）に示すＰ−Ｔ型継手部１２（以下単に「継手部」という場合がある）を有する鋼管矢板１０を使用する。鋼管矢板１０は、図２（ａ）に示すように、所定の内径を有する円筒形状の鋼管１１を主材とし、鋼管１１よりも小さい内径を有する平面視でＣ形状の鋼製の継手管が鋼管１１の外壁面に溶接にて取り付けてなるＰ継手１３と、Ｐ継手１３と対角をなす外壁面の位置に、略Ｔ字型の断面を有する鋼材のウェブ端部を鋼管１１に溶接にて取り付けてなるＴ継手１４とを有している。なお、Ｐ継手１３は、鋼管１１との設置面と反対側にＴ継手１４を挿置するための切り欠きを有している。ここで、この切り欠きの位置は鋼管矢板１０を列状に連設してなる止水壁の形状により、適宜変更するものとする。また、Ｐ継手１３の内面とＴ継手１４のフランジ部分には予めカットバックアスファルト、アスファルト乳剤、アスファルト等のプライマーを塗布しておく。
鋼管矢板１０の打設は、図示しないバイブロハンマー等の打設機を使用して、鋼管矢板１０が粘性土層や岩盤等からなる不透水層に所定の深さが挿入するように打設する。そして、隣接する鋼管矢板１０のＰ継手１３とＴ継手１４とが噛み合うように、列状に次の鋼管矢板１０を打設する。なお、止水材充填空間１５は、止水材３０が外部にもれないようにほぼ閉合されている。その後、Ｐ継手１３とＴ継手１４で囲まれる空間部である止水材充填空間１５内の土砂をウォータージェット工法などにより排出、清掃する。
なお、鋼管矢板１０の継手部１２の構造は、図２（ｂ）に示すＬ−Ｔ型継手部、図２（ｃ）に示すＰ−Ｐ型継手部等を使用しても良く、本発明が採用可能な止水壁の継手部の形状は限定されない。 (1) Steel sheet pile driving process S1
First, the steel pipe sheet pile 10 is cast.
In the present embodiment, a steel pipe sheet pile 10 having a PT joint 12 (hereinafter sometimes simply referred to as “joint”) shown in FIG. 2A is used. As shown in FIG. 2 (a), the steel pipe sheet pile 10 has a cylindrical steel pipe 11 having a predetermined inner diameter as a main material, and a C-shaped steel joint pipe having a smaller inner diameter than the steel pipe 11 in plan view. A P-joint 13 attached to the outer wall surface of the steel pipe 11 by welding, and a web end portion of a steel material having a substantially T-shaped cross section is welded to the steel pipe 11 at a position of an outer wall surface diagonal to the P-joint 13. And a T-joint 14 attached thereto. The P joint 13 has a notch for inserting the T joint 14 on the side opposite to the installation surface with the steel pipe 11. Here, the position of the notch is appropriately changed according to the shape of the water stop wall formed by connecting the steel pipe sheet piles 10 in a row. Further, a primer such as cutback asphalt, asphalt emulsion, or asphalt is applied to the inner surface of the P joint 13 and the flange portion of the T joint 14 in advance.
The steel pipe sheet pile 10 is driven by using a driving machine such as a vibro hammer (not shown) so that the steel pipe sheet pile 10 is inserted into a water-impermeable layer made of a viscous soil layer or a bedrock at a predetermined depth. . Then, the next steel pipe sheet pile 10 is driven in a row so that the P joint 13 and the T joint 14 of the adjacent steel pipe sheet pile 10 mesh with each other. The water-stopping material filling space 15 is substantially closed so that the water-stopping material 30 does not leak to the outside. Thereafter, the earth and sand in the water blocking material filling space 15 which is a space surrounded by the P joint 13 and the T joint 14 is discharged and cleaned by a water jet method or the like.
In addition, the structure of the joint part 12 of the steel pipe sheet pile 10 may use an LT joint part shown in FIG. 2B and a PP joint part shown in FIG. The shape of the joint part of the water stop wall which can be used is not limited.

（２）止水材成型工程Ｓ２
次に、止水材３０を成型する。
図３に示すような、Ｐ継手１３よりもやや小さい内径を有する中空円柱状の管の一部を切り取った止水材成型型枠２０を、水平に静置する。次に、吊上げワイヤ２１を、成型後の止水材３０の略中心に配置できるように止水材成型型枠２０の両端に取り付け、ワイヤ固定金具２２で緊張させる。そして、吊上げワイヤ２１の周りに電熱線ヒーターからなる発熱体２３を取り付け、加熱混合したアスファルトマスチックからなる止水材３０を止水材成型型枠２０内に流し込み、常温となるまで養生し、棒状に成型された止水材３０である止水材成形物３１を成型する。この際、止水材成型型枠２０の長さは、止水材成型型枠２０の内径と、止水材充填空間１５の体積と、地下水位との関係により決定するものとし、後述の止水材溶融工程Ｓ４において止水材成型物３１を溶融し、空隙を埋め充填した時点で、止水材３０の天端が地下水位よりも高くなるように長尺に設定してもよく、また、複数本の短尺の止水材成形物３１を成型し、これらを複数回に分けて空隙に挿入、加熱、溶融、充填することにより止水材３０の天端が地下水位よりも高くなるように設定してもよい。なお、本実施の形態では、アスファルトマスチックとして、アスファルト２０％、石粉３０％、砂５０％の配合のものを使用する。 (2) Waterproofing material molding step S2
Next, the water blocking material 30 is molded.
As shown in FIG. 3, a water-stopping material forming form 20 in which a part of a hollow cylindrical pipe having an inner diameter slightly smaller than that of the P joint 13 is cut out is left standing horizontally. Next, the lifting wires 21 are attached to both ends of the water-stopping material forming form 20 so that they can be arranged at substantially the center of the water-stopping material 30 after molding, and are tensioned by the wire fixing brackets 22. Then, a heating element 23 made of a heating wire heater is attached around the lifting wire 21, and a water-stopping material 30 made of a heated and mixed asphalt mastic is poured into the water-stopping material forming form 20, cured to room temperature, and cured in a rod shape. A water-stopping material molded article 31 which is a water-stopping material 30 molded into a shape is formed. At this time, the length of the water-stopping material forming form 20 is determined by the relationship between the inner diameter of the water-stopping material forming form 20, the volume of the water-stopping material filling space 15, and the groundwater level. In the water material melting step S4, when the water-stop material molding 31 is melted and the voids are filled and filled, the water-stop material 30 may be set to be long so that the top end is higher than the groundwater level, By molding a plurality of short water-blocking material moldings 31 and inserting them into the gap in a plurality of times, heating, melting, and filling, the top end of the water-blocking material 30 is higher than the groundwater level. May be set. In the present embodiment, asphalt mastic used is a mixture of asphalt 20%, stone powder 30%, and sand 50%.

（３）止水材挿入工程Ｓ３
次に止水材３０を止水材充填空間１５に挿入する。
成型固化した棒状の止水材成型物３１から止水材成形型枠２０を取り外し、図示しないクレーンなどにより持ち上げ、図４に示すように、止水材充填空間１５に挿入する。 (3) Waterproof material insertion step S3
Next, the water stopping material 30 is inserted into the water stopping material filling space 15.
The water-stopping material forming frame 20 is removed from the solidified rod-shaped water-stopping material molding 31, lifted by a crane (not shown), and inserted into the water-stopping material filling space 15 as shown in FIG. 4.

（４）止水材溶融工程Ｓ４
次に、止水材成型物３１を溶融させ、止水材充填空間１５を止水材３０で充填する。
止水材充填空間１５に止水材成型物３１を挿入後、発熱源に発熱体２３を接続し、発熱体２３を発熱させ止水材成型物３１を溶融させる。止水材成型物３１を溶融させることで、流動性を有する止水材３０が、止水材充填空間１５内面と止水材成型物３１との間の空隙や、Ｐ継手１３とＴ継手１４との間にあるわずかな空隙に流れこみ空隙をなくすことが可能となる。なお、Ｐ継手１３とＴ継手１４にわずかな隙間が形成されており、その隙間から止水材３０が流れ出そうとしても、継手部１２周面の地下水や地山に触れることで冷却され、その流動性を失うことから、継手部１２外に流出することはない。
ここで、止水材３０による継手部１２の充填完了後、発熱体２３は、抜き取っても、そのまま残置しておいても良い。 (4) Water stopping material melting step S4
Next, the water-stopping material molding 31 is melted, and the water-stopping material filling space 15 is filled with the water-stopping material 30.
After inserting the water-stopping material molding 31 into the water-stopping material filling space 15, the heating element 23 is connected to the heat source, the heating element 23 generates heat, and the water-stopping material molding 31 is melted. By melting the water-stopping material 31, the water-stopping material 30 having fluidity is formed into a gap between the inner surface of the water-stopping material filling space 15 and the water-stopping material 31, and the P joint 13 and the T joint 14. It is possible to eliminate the void by flowing into a slight void between the two. In addition, a slight gap is formed between the P joint 13 and the T joint 14, and even if the water-stopping material 30 tries to flow out of the gap, it is cooled by touching the groundwater or the ground around the joint portion 12 peripheral surface. Since the fluidity is lost, the fluid does not flow out of the joint portion 12.
Here, after the filling of the joint portion 12 with the water blocking material 30 is completed, the heating element 23 may be extracted or left as it is.

このように、本発明によれば、鋼管矢板打設工程Ｓ１において、止水材充填空間１５内を洗浄することで、透水性の土砂などが残置されて止水材３０を充填後も、この土砂がみずみちとなり漏水を引き起こす原因となることを避けることが可能となる。また、鋼管矢板１０のＰ継手１３内面とＴ継手１４のフランジ部分に予めプライマーを塗布しておくことで、材質の異なる鋼管矢板１０と止水材３０との接着性をより高めることが可能となり好適である。   As described above, according to the present invention, in the steel pipe sheet pile driving step S1, by cleaning the inside of the water-stopping material filling space 15, even after the water-stopping material 30 is filled with the water-permeable soil and the like remaining, It is possible to prevent the earth and sand from becoming a water droplet and causing water leakage. In addition, by applying a primer to the inner surface of the P joint 13 of the steel pipe sheet pile 10 and the flange portion of the T joint 14 in advance, it becomes possible to further enhance the adhesiveness between the steel pipe sheet pile 10 and the water stopping material 30 of different materials. It is suitable.

また、止水材成型工程Ｓ２において、止水材成型物３１を止水材充填空間１５よりやや小さめに成型することにより、止水材成型物３１の挿入時に、容易に挿入することが可能となる。また、止水材成型型枠２０を所定の形状に設定することで、充填後の止水材３０天端が地下水位よりも高い位置になり、地下水の流出防止が可能となる。   Further, in the water-stopping material molding step S2, the water-stopping material molding 31 is molded slightly smaller than the water-stopping material filling space 15 so that the water-stopping material molding 31 can be easily inserted at the time of insertion. Become. In addition, by setting the water-stopping material forming form 20 to a predetermined shape, the top end of the water-stopping material 30 after filling is at a position higher than the groundwater level, and the outflow of groundwater can be prevented.

また、止水材挿入工程Ｓ３において、前述の止水材成型工程Ｓ２より予め止水材３０が止水材成型物３１に成型されているため、止水材３０の継手部１２への挿入時にはクレーンを使用するのみで設置が可能となり、従来の止水材３０を溶融するための加熱設備、止水材３０の圧送装置、止水材３０注入用のパイプまたは流し込み用のホッパー等の設備を使用することなく、簡易に施工が可能となる。   Further, in the water-stopping material insertion step S3, since the water-stopping material 30 has been molded into the water-stopping material molding 31 in advance from the above-described water-stopping material molding step S2, when the water-stopping material 30 is inserted into the joint portion 12, Installation is possible only by using a crane, and conventional equipment such as a heating device for melting the water-stopping material 30, a pumping device for the water-stopping material 30, a pipe for pouring the water-stopping material 30, or a hopper for pouring. Construction can be performed easily without using.

また、止水材溶融工程Ｓ４において、継手部１２下端から地下水位以浅までの長さに形成された止水材成型物３１を止水材充填空間１５に挿入し、発熱体２３を機能させて溶融することで、止水材成型物３１周囲と止水材充填空間１５内面との隙間を埋めることができるため、従来の流し込みや注入などによる充填方法のように、止水材３０が途中段階で流動性を失い充填が不十分となることを回避し、継手部１２に空隙を形成することなく充填することが可能となる。ここで、発熱体２３を残置しておくことで、将来、何らかの大きな力が鋼矢板１０に加わることにより継手部１２に大きな変形が生じ、空隙が形成された場合においても、再度発熱体２３を機能させることで、止水材３０が溶融し、再び継手部１２を空隙無く充填することが可能となる。   Further, in the water-stopping material melting step S4, the water-stopping material molded product 31 formed from the lower end of the joint portion 12 to the shallower than the groundwater level is inserted into the water-stopping material filling space 15, and the heating element 23 is caused to function. By melting, the gap between the periphery of the water-stopping material molding 31 and the inner surface of the water-stopping material filling space 15 can be filled. This prevents the fluidity from being lost and the filling to be insufficient, and allows the joint portion 12 to be filled without forming a gap. Here, by leaving the heating element 23, in the future, when some large force is applied to the steel sheet pile 10, a large deformation occurs in the joint portion 12, and even when a gap is formed, the heating element 23 is again removed. By functioning, the water stopping material 30 is melted, and the joint portion 12 can be filled again without a gap.

（第２の実施の形態）
図５は、鋼管矢板継手部の各形状について、鋼管矢板打設時に何らかの原因により隣り合う矢板の打設中心線が、中心線ＣＬと中心線ＣＬ’のように、ズレて打設された場合の例を示しており、（ａ）はＰ−Ｔ型継手部を示す平断面図、（ｂ）はＬ−Ｔ型継手部を示す平断面図、（ｃ）はＰ−Ｐ型継手部を示す平断面図である。
第２の実施の形態では、図５（ａ）に示すような、ズレの生じたＰ−Ｔ継手部を有する鋼管矢板止水壁に関して、継手部１２に予め止水材漏溢防止材が配置された止水材（以下「漏溢防止材付止水材」という）により止水を行う。 (Second embodiment)
FIG. 5 shows the case where, for each shape of the steel pipe sheet pile joint, the center line for driving the adjacent sheet pile is displaced like the center line CL and the center line CL 'for some reason when driving the steel sheet pile. (A) is a plan sectional view showing a PT joint part, (b) is a plan sectional view showing an LT joint part, and (c) is a PP joint part. FIG.
In the second embodiment, as shown in FIG. 5 (a), regarding a steel pipe sheet pile water stop wall having a displaced PT joint part, a water stoppage material leakage prevention material is disposed in the joint part 12 in advance. Water is stopped by the waterproof material (hereinafter referred to as “waterproof material with leakage prevention material”).

漏溢防止材付止水材は、図６（ａ）に示すように、止水材成形工程Ｓ２において、止水材３０を止水材成型型枠２０内に流し込んだ後、ガラスクロスからなる止水材漏溢防止材３２を止水材３０の上面（止水材成形型枠２０の切り欠き側表面）の少なくとも一部に貼り付けて養生することにより、止水材成型物３１と一体化させて漏溢防止材付止水材３１’とする。
ここで、止水材漏溢防止材３２としては、ガラスクロスに限定されるものではなく、アスファルトシート、塩ビシート、ウレタンシート、鉄板等を用いてもよい。また、図６（ｃ）に示すように、鋼管矢板１１の継手部１２に形成された隙間１５’より大きめの骨材を、止水材成形型枠２０の切り欠き側の少なくとも一部に配置するものとしても良い。なお、止水材漏溢防止材３２には、止水材３０との接着性を良くするために、予めアスファルトやアスファルト乳剤をコーティングしておくのが好ましい。 As shown in FIG. 6 (a), the water-stopping material with the leakage-preventing material is made of glass cloth after the water-stopping material 30 is poured into the water-stopping material forming form 20 in the water-stopping material forming step S2. The waterproofing material leakage preventing material 32 is attached to at least a part of the upper surface of the waterproofing material 30 (the cut-off side surface of the waterproofing material forming frame 20) and cured to be integrated with the waterproofing material molded product 31. To form a waterproof material 31 'with a leakage prevention material.
Here, the water stoppage material leakage prevention material 32 is not limited to glass cloth, and may be an asphalt sheet, a PVC sheet, a urethane sheet, an iron plate, or the like. As shown in FIG. 6C, an aggregate larger than the gap 15 ′ formed in the joint portion 12 of the steel pipe sheet pile 11 is arranged on at least a part of the cut-off side of the waterproofing material forming form 20. It is good to do. In addition, it is preferable to coat the asphalt or the asphalt emulsion in advance on the waterproofing material leakage preventing material 32 in order to improve the adhesion to the waterproofing material 30.

次に、漏溢防止材付止水材３１’を継手部１２の止水材充填空間１５に挿入する。すると、図６（ｂ）に示すように、止水材漏溢防止材３２が、隙間１５’を塞ぐため、止水材成型物３１を溶融させても、隙間１５’から流出することなく、止水材充填空間１５を止水材で充填することが可能となる。   Next, the water-stopping material 31 ′ with a leakage prevention material is inserted into the water-stopping material filling space 15 of the joint portion 12. Then, as shown in FIG. 6 (b), the water-stopping material leakage preventing material 32 closes the gap 15 ′, so that even if the water-stopping material molding 31 is melted, it does not flow out of the gap 15 ′. The water-stopping material filling space 15 can be filled with the water-stopping material.

なお、第２の実施の形態に係る止水壁継手部の止水方法の各作業手順は、上述の、止水材成形工程Ｓ２において止水材成形物３１と止水材漏溢防止材３２とを一体化させて漏溢防止材付止水材３１’とする以外は、第１の実施の形態と同一であるため、詳細な説明は省略する。   In addition, each operation procedure of the water stopping method of the water stopping wall joint portion according to the second embodiment includes the water stopping material molding 31 and the water stopping material leakage preventing material 32 in the water stopping material forming step S2 described above. This is the same as the first embodiment, except that the above is integrated into a water-stopping material 31 ′ with a leakage prevention material, and therefore detailed description is omitted.

以上、本発明について、好適な実施形態について説明したが、本発明は当該実施形態に限られず、本発明の趣旨を逸脱しない範囲で適宜設計変更が可能である。
例えば、前述の実施の形態では鋼管矢板を使用するものとしたが、鋼矢板、ケーソン、鋼板セル等、止水壁として使用する継手部を有するあらゆる壁体に採用することが可能である。
また、止水壁継手部内面のプライマーの塗布を、鋼管矢板打設前に予め行うものとしたが、鋼管矢板打設後、止水壁継手部内面の洗浄後に行ってもよく、その施工順序は限定されない。 As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to the embodiments, and the design can be appropriately changed without departing from the spirit of the present invention.
For example, in the above-described embodiment, a steel pipe sheet pile is used. However, the present invention can be applied to any wall body having a joint used as a water blocking wall, such as a steel sheet pile, a caisson, a steel plate cell, and the like.
Although the application of the primer on the inner surface of the waterproof wall joint is performed in advance before driving the steel sheet pile, the primer may be applied after cleaning the inner surface of the waterproof wall joint after driving the steel sheet pile. Is not limited.

また、止水材として使用したアスファルトマスチックの配合は限定されるものではなく、加熱により流動性を発現し、固化後の止水性に優れ、止水壁継手部の多少の変形に耐える弾力性を有することが可能であれば良い。なお、アスファルトにゴム入りアスファルトを使用すれば、より追随性及び強度に優れた止水構造を構築することが可能となり、好ましい。
また、止水材としてアスファルトマスチックを使用するものとしたが、加熱により流動性を発現し、固化後の止水性に優れ、止水壁継手部の多少の変形に耐える追随性を有する材質であればその材料は限定されない。
また、充填を行う止水材の形状は、継手部の充填に十分な量の止水材を、継手部の止水材充填空間に挿入しやすい形状であればよい。 The composition of the asphalt mastic used as a water-stopping material is not limited, and it exhibits fluidity by heating, has excellent water-stopping properties after solidification, and has elasticity to withstand some deformation of the water-stop wall joint. What is necessary is just to be able to have. In addition, it is preferable to use a rubber-containing asphalt as the asphalt because it is possible to construct a water-stop structure having more excellent followability and strength.
In addition, asphalt mastic was used as the water-stopping material, but the material which exhibits fluidity by heating, has excellent water-stopping properties after solidification, and has a follow-up property to withstand some deformation of the water-stop wall joint portion. The material is not limited.
The shape of the water-stopping material to be filled may be any shape as long as a sufficient amount of the water-stopping material for filling the joint portion can be easily inserted into the water-stopping material filling space of the joint portion.

また、発熱体を吊上げワイヤの周りに取り付け、止水材の略中心に配置するものとしたが、止水材成型物の周囲に巻き付けたり、止水材内に螺旋状に配置したりするなど、その配置方法は限定されない。
また、発熱体として電熱線ヒーターを使用するものとしたが、ホットオイルヒーター、加温した水を循環させるパイプヒーターを使用するなど、止水材を溶融することが可能であれば、その構造は限定されない。 In addition, the heating element is attached around the lifting wire and is disposed at substantially the center of the water-stopping material. However, the heating element may be wound around the water-stopping material molded product, or may be spirally arranged in the water-stopping material. The arrangement method is not limited.
In addition, although the heating wire heater is used as the heating element, if the water stopping material can be melted by using a hot oil heater, a pipe heater for circulating heated water, the structure is as follows. Not limited.

また、止水壁打設時に何らかの原因により矢板中心にズレが生じて継手部に大きな隙間が生じた場合に漏溢防止材付止水材を使用するものとしたが、これに限定されるものではなく、的確な打設を終えた止水壁の継手部に漏溢防止材付止水材を使用することにより、供用後に、止水壁に何らかの負荷が加わることにより継手部に大きな隙間が生じても、止水材の流出を防止するものとしても良い。   In addition, when a gap is generated in the center of the sheet pile for some reason at the time of placing the water blocking wall and a large gap is generated in the joint portion, the water stopping material with the leakage prevention material is used, but the invention is not limited to this. Rather, by using a waterproof material with a leak prevention material at the joint of the water stop wall that has been properly cast, a large gap is created at the joint due to any load applied to the water stop wall after operation. Even if it occurs, it may be configured to prevent the outflow of the waterproof material.

本発明の効果を確認するために以下の実証実験を行った。
（１）継手部設置
鋼管矢板継手部を模して、水槽１６中に内径１５０ｍｍ、長さ１ｍの中空円柱管１７を垂直に設置する（図７参照）。
（２）止水材成型
直径１２５ｍｍ、長さ１ｍの止水材成型型枠２０に直径９ｍｍの吊上げワイヤ２１と直径４．８ｍｍの電熱線ヒーターからなる発熱体２３と熱電対温度計２４ａとを設置し、加熱混合したアスファルトマスチックからなる止水材３０を挿入し、常温となるまで養生し止水材成型物３１を成型する（図３参照）。
ここで、本実施例で使用するアスファルトマスチックの配合は、アスファルト２０％に対して石粉３０％、砂５０％のものを使用する。
（３）止水材挿入
水槽１６に設置した中空円柱管１７内に、止水材成型物３１を挿入する。
（４）中空円柱管充填
止水材成型物３１内に設置された発熱体２３に通電し、止水材成型物３１を加熱溶融して、止水材３０を中空円柱管１７に充填する。ここで、図７の２５ａは電源、２５ｂは電圧調整器で、２６は電源２５ａ及び電圧調整器２５ｂと発熱体２３をつなぐリード線である。
止水材３０の充填完了の確認は、止水材成形物３１内部と中空円柱管１７内面に設置した熱電対温度計２４による温度測定（図８参照）と、溶融した止水材３０の天端部の下がり程度を計測することで行う。なお、熱電対温度計２４は、止水材成形物３１の中心付近で深さ５０ｃｍの位置（２４ａ）、中空円柱管１７内面に上端から深さ５０ｃｍ（２４ｂ）、７０ｃｍ（２４ｃ）、９０ｃｍ（２４ｄ）の位置、水槽１６内の水中（２４ｅ）及び実験室室内（２４ｆ）にそれぞれ設置した。各熱電対温度計２４ａ，２４ｂ，２４ｃ，２４ｄ，２４ｅ，２４ｆによる温度の経時変化を図８のグラフに示す。図８より、加熱から約１日で、中空円柱管１７内面に設置した熱電対温度計２４ｂ，２４ｃ，２４ｄの示す温度が約４０℃まで上昇したことから、止水材成形物３１が溶融して中空円柱管１７内を隙間なく充填したことがわかる。 The following demonstration experiments were performed to confirm the effects of the present invention.
(1) Installation of Joint Part A hollow cylindrical pipe 17 having an inner diameter of 150 mm and a length of 1 m is vertically installed in a water tank 16 to simulate a steel pipe sheet pile joint part (see FIG. 7).
(2) Water-stopping material molding A 9 mm-diameter lifting wire 21, a heating element 23 composed of a heating wire heater having a diameter of 4.8 mm, and a thermocouple thermometer 24 a are mounted on a water-stopping material molding form 20 having a diameter of 125 mm and a length of 1 m. The water-stopping material 30 made of asphalt mastic, which has been installed and mixed by heating, is inserted, cured until it reaches room temperature, and a water-stopping material molding 31 is formed (see FIG. 3).
Here, asphalt mastic used in the present embodiment is a mixture of asphalt 20%, stone powder 30% and sand 50%.
(3) Insertion of water-stopping material The water-stopping material molding 31 is inserted into the hollow cylindrical pipe 17 installed in the water tank 16.
(4) Filling Hollow Cylindrical Tube Electricity is supplied to the heating element 23 installed in the water-stopping material molded product 31 to heat and melt the water-stopping material molded product 31 and fill the hollow cylindrical tube 17 with the water-stopping material 30. Here, 25a in FIG. 7 is a power supply, 25b is a voltage regulator, and 26 is a lead wire connecting the power supply 25a, the voltage regulator 25b and the heating element 23.
The completion of filling of the water-stopping material 30 is confirmed by measuring the temperature with the thermocouple thermometer 24 installed inside the water-stopping material molding 31 and the inner surface of the hollow cylindrical tube 17 (see FIG. 8), and This is done by measuring the extent of the edge drop. The thermocouple thermometer 24 is located at a position 50 cm deep (24a) near the center of the water-stopping material molded article 31 and 50 cm (24b), 70 cm (24c), and 90 cm (90 cm deep) from the upper end on the inner surface of the hollow cylindrical tube 17. 24d), the water in the water tank 16 (24e) and the laboratory room (24f). FIG. 8 is a graph showing changes over time in temperature by the thermocouple thermometers 24a, 24b, 24c, 24d, 24e, and 24f. As shown in FIG. 8, the temperature indicated by the thermocouple thermometers 24b, 24c, and 24d installed on the inner surface of the hollow cylindrical tube 17 rose to about 40 ° C. about one day after the heating. It can be seen that the inside of the hollow cylindrical tube 17 was filled without gaps.

上述の方法により、実験を行った結果、棒状の止水材成型物３１が、加熱溶融されることで、徐々にその直径が太くなり、内径１５０ｍｍの中空円柱管１７を充填すると同時にその長さは７０ｃｍとなった。また、完了後の止水材３０を中空円柱管１７から取り出し、５等分に切断して充填状況を目視したところ、中空円柱管１５内に空隙を巻き込むことなく、充填されることを確認した。   As a result of an experiment conducted by the above-described method, the rod-shaped water-blocking material molded product 31 gradually becomes thicker by being heated and melted, and fills the hollow cylindrical tube 17 having an inner diameter of 150 mm while simultaneously filling its length. Became 70 cm. Further, the water-stop material 30 after completion was taken out of the hollow cylindrical tube 17, cut into five equal parts, and the filling state was visually observed. As a result, it was confirmed that the hollow cylindrical tube 15 was filled without involving the void. .

本発明による止水壁継手部の止水方法の作業手順を示したフローチャートである。It is the flowchart which showed the work procedure of the water stop method of the water stop wall joint part by this invention. 鋼管矢板継手部の形状例を示しており、（ａ）はＰ−Ｔ型継手部を示す平断面図、（ｂ）はＬ−Ｔ型継手部を示す平断面図、（ｃ）はＰ−Ｐ型継手部を示す平断面図である。The example of a shape of a steel pipe sheet pile joint part is shown, (a) is a plane sectional view showing a PT type joint part, (b) is a plane sectional view showing an LT type joint part, (c) is a P-type joint part. It is a plane sectional view showing a P type joint part. 止水材成型工程を示す図であり、（ａ）は斜視図、（ｂ）は正断面図、（ｃ）は側断面図である。It is a figure which shows a waterproofing material shaping | molding process, (a) is a perspective view, (b) is a front sectional view, (c) is a side sectional view. 鋼管矢板継手部に止水材成型物が挿入された状態を示す断面図である。It is sectional drawing which shows the state in which the waterproofing material molding was inserted in the steel pipe sheet pile joint part. 第２の実施の形態に係る鋼管矢板継手部の形状例を示しており、（ａ）はＰ−Ｔ型継手部を示す平断面図、（ｂ）はＬ−Ｔ型継手部を示す平断面図、（ｃ）はＰ−Ｐ型継手部を示す平断面図である。It shows the example of shape of the steel pipe sheet pile joint part concerning a 2nd embodiment, (a) is a plane sectional view showing a PT type joint part, and (b) is a plane cross section showing an LT type joint part. FIG. 1C is a plan sectional view showing a PP joint. 第２の実施の形態に係る止水材成型工程及び止水材挿入工程を示しており、（ａ）は止水材成形工程正断面図、（ｂ）は止水材挿入工程断面図、（ｃ）止水材漏溢防止材の変形例である。FIGS. 5A and 5B show a water-blocking material forming step and a water-blocking material inserting step according to the second embodiment, wherein FIG. 6A is a front sectional view of the water-blocking material forming step, FIG. c) It is a modification of the waterproof material leakage prevention material. 本発明による充填効果の実験状況を示す側断面図である。It is a sectional side view showing the experimental situation of the filling effect by the present invention. 本発明による充填効果の実験における各測定温度の経時変化を示すグラフである。5 is a graph showing a change with time of each measurement temperature in an experiment of a filling effect according to the present invention.

符号の説明Explanation of reference numerals

１０ 鋼管矢板
１１ 鋼管
１２ 継手部
１５ 止水材充填空間
１５’ 隙間（開口部）
２３ 発熱体
３０ 止水材
３１ 止水材成型物
３１’ 漏溢防止材付止水材
３２ 止水材漏溢防止材 DESCRIPTION OF SYMBOLS 10 Steel pipe sheet pile 11 Steel pipe 12 Joint part 15 Waterproof material filling space 15 'Gap (opening)
23 Heating Element 30 Water-Stopping Material 31 Water-Stopping Material Molded Material 31 'Water-Stopping Material with Leakage-Prevention Material 32 Water-Stopping Material Leakage-Prevention Material

Claims (5)

止水材充填空間を有する止水壁の継手部の止水方法において、止水性能を有し、常温時には任意形状に成型可能で追随性を有し、加熱により溶融する性能を有する止水材を、前記止水材充填空間に挿入する止水材挿入工程と、
前記止水材を溶融させて、前記止水材充填空間に充填する止水材溶融工程と、
を含むことを特徴とする止水壁継手部の止水方法。 In the method for stopping water at a joint portion of a water stop wall having a water stop material filling space, the water stop material has water stopping performance, can be molded into an arbitrary shape at room temperature, has followability, and has a performance of melting by heating. A water-stop material insertion step of inserting the water-stop material filling space,
A water-stop material melting step of melting the water-stop material and filling the water-stop material filling space,
A method for stopping water at a water stop wall joint portion, comprising: 前記止水材充填空間に挿入する止水材には、予め発熱体が取り付けられてあることを特徴とする請求項１に記載の止水壁継手部の止水方法。   The water stopping method for a water stopping wall joint according to claim 1, wherein a heating element is attached to the water stopping material inserted into the water stopping material filling space in advance. 前記止水壁の継手部は、中空筒状形状であり、
前記止水材は、前記継手部に挿入可能である柱体形状に成型されているアスファルトマスチックであることを特徴とする請求項１又は請求項２に記載の止水壁継手部の止水方法。 The joint portion of the water stop wall has a hollow cylindrical shape,
The method according to claim 1 or 2, wherein the water-stopping material is an asphalt mastic molded into a column shape that can be inserted into the joint portion. . 前記止水壁の継手部は、開口部を有する中空筒状形状であり、
前記止水材は、前記継手部に挿入可能である柱体形状に成型されているアスファルトマスチックであり、
前記止水材の開口部側表面の少なくとも一部には、止水材漏溢防止材が配置されていることを特徴とする請求項１又は請求項２に記載の止水壁継手部の止水方法。 The joint portion of the water stop wall is a hollow cylindrical shape having an opening,
The water blocking material is an asphalt mastic molded into a column shape that can be inserted into the joint portion,
3. The water blocking wall joint according to claim 1, wherein a water blocking material leakage preventing material is disposed on at least a part of the opening side surface of the water blocking material. 4. Water method. 前記止水壁の継手部の内面に、予めプライマーが塗布されていることを特徴とする請求項１乃至請求項４のいずれか１項に記載の止水壁継手部の止水方法。   The method according to any one of claims 1 to 4, wherein a primer is applied to an inner surface of the joint portion of the water stop wall in advance.
JP2003272427A 2003-05-14 2003-07-09 Water stop method for water stop wall joint Expired - Fee Related JP4160876B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008106459A (en) * 2006-10-24 2008-05-08 World Engineering Kk Construction method for impervious wall
WO2010146836A1 (en) * 2009-06-19 2010-12-23 新日本製鐵株式会社 Structure for connecting steel pipe sheet piles, and steel pipe sheet pile structure
JP2011137371A (en) * 2011-02-28 2011-07-14 Penta Ocean Construction Co Ltd Water shielding treatment method for structure
CN113404036A (en) * 2021-06-16 2021-09-17 五邑大学 Underground diaphragm wall joint and construction method thereof
CN114541482A (en) * 2022-02-28 2022-05-27 上海公路桥梁（集团）有限公司 Permeation prevention device and permeation prevention method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008106459A (en) * 2006-10-24 2008-05-08 World Engineering Kk Construction method for impervious wall
WO2010146836A1 (en) * 2009-06-19 2010-12-23 新日本製鐵株式会社 Structure for connecting steel pipe sheet piles, and steel pipe sheet pile structure
CN102803615A (en) * 2009-06-19 2012-11-28 新日本制铁株式会社 Structure for connecting steel pipe sheet piles, and steel pipe sheet pile structure
CN102803615B (en) * 2009-06-19 2014-04-02 新日铁住金株式会社 Structure for connecting steel pipe sheet piles, and steel pipe sheet pile structure
JP2011137371A (en) * 2011-02-28 2011-07-14 Penta Ocean Construction Co Ltd Water shielding treatment method for structure
CN113404036A (en) * 2021-06-16 2021-09-17 五邑大学 Underground diaphragm wall joint and construction method thereof
CN114541482A (en) * 2022-02-28 2022-05-27 上海公路桥梁（集团）有限公司 Permeation prevention device and permeation prevention method

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