JP2007029904A - Environmental preservation construction method - Google Patents

Environmental preservation construction method Download PDF

Info

Publication number
JP2007029904A
JP2007029904A JP2005219644A JP2005219644A JP2007029904A JP 2007029904 A JP2007029904 A JP 2007029904A JP 2005219644 A JP2005219644 A JP 2005219644A JP 2005219644 A JP2005219644 A JP 2005219644A JP 2007029904 A JP2007029904 A JP 2007029904A
Authority
JP
Japan
Prior art keywords
pile
purification
axis
area
wall
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
Application number
JP2005219644A
Other languages
Japanese (ja)
Other versions
JP2007029904A5 (en
JP5072201B2 (en
Inventor
Susumu Araki
進 荒木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raito Kogyo Co Ltd
Original Assignee
Raito Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Raito Kogyo Co Ltd filed Critical Raito Kogyo Co Ltd
Priority to JP2005219644A priority Critical patent/JP5072201B2/en
Publication of JP2007029904A publication Critical patent/JP2007029904A/en
Publication of JP2007029904A5 publication Critical patent/JP2007029904A5/ja
Application granted granted Critical
Publication of JP5072201B2 publication Critical patent/JP5072201B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Bulkheads Adapted To Foundation Construction (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an environmental preservation construction method for surely preventing pollutants from diffusing, with a lower cost and less labor for its application. <P>SOLUTION: In the construction method for building a barrier to block the pollutants in a polluted area from moving to its surroundings at the surroundings of the area which has been or may have been polluted, or at a part thereof, the barrier is built for blocking and retaining a liquid containing the pollutants in the area which has been or may have been polluted. Thereafter, cleaning stakes adsorbing or holding or decomposing the contaminants are built at predetermined intervals connecting successively to the barrier. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、環境保全工法に係り、特に汚染されたまたは汚染の虞れがある領域の周囲に、その領域から周辺への汚染物質の移動を阻止する遮断壁を構築して環境への影響を防止する環境保全工法に関するものである。   The present invention relates to an environmental protection method, and in particular, has a barrier wall around a contaminated or potentially contaminated area to prevent the movement of pollutants from that area to the environment. It relates to the environmental conservation method to prevent.

従来より、図１５に示すように、廃棄物Ｈの捨場等の汚染されたまたは汚染の虞れがある領域の周囲に、その領域から周辺への汚染物質の移動を阻止する遮断壁１、例えば、コンクリート壁を不透水層４まで到達するように構築する、あるいはさらに底にコンクリートの不透水性壁（図示せず）を構築することが行われてきた。そして、地震などの外的要因または経年変化により遮断壁にクラックが生じる場合を考慮し、遮断壁内に汚染物質を捕捉する捕捉物質を入れることが行なわれている。なお、図１における符号５Ａ，５Ｂは不透水層シートを示している。   Conventionally, as shown in FIG. 15, a blocking wall 1 that prevents the movement of contaminants from the area to the periphery, for example, around a contaminated area that is likely to be contaminated, such as the disposal site of the waste H. It has been practiced to construct a concrete wall so as to reach the impermeable layer 4, or to construct a concrete impermeable wall (not shown) at the bottom. In consideration of a case where a crack is generated in the barrier due to an external factor such as an earthquake or a secular change, a trapping substance for trapping a contaminant is placed in the barrier. In addition, the code | symbol 5A, 5B in FIG. 1 has shown the impermeable layer sheet.

施工方法としては、具体的には、図１６に示すように、最終的に掘削溝１Ａの長手方向に汚染物質を捕捉する捕捉物質を含む捕捉杭６、６…を並べて構築する関係で、図１７に示すように、まず、多数の透孔７ａ，７ａ，…を有する中空管７をベントナイト等の安定液９で満たされた掘削溝１Ａ内に間隔を置いて挿入する。次に、図１８示すように、底付き中空の空間形成管８を中空管１３内に挿入する。そして、空間形成管８の挿入を終了したならば、安定液９に硬化用添加材を添加して攪拌し硬化を図るか、安定液９をたとえばセメントと置換するなどして、図１９に示すように、固化性材料１０の固化を図る。最終的に、この固化性材料１０の流動性が無くなったまたは固化した後、図２０に示すように、空間形成管８を引き抜き、その引き抜いた空間を充填用空間とし、その後、図２１に示すように、中空管７内に汚染物質の捕捉物質を投入して充填するものである（例えば、特許文献１参照）。
特許３１５７０１７号公報（３頁） As a construction method, specifically, as shown in FIG. 16, the trapping piles 6, 6... Containing trapping substances that finally trap pollutants are arranged side by side in the longitudinal direction of the excavation groove 1 </ b> A. As shown in FIG. 17, first, the hollow tube 7 having a large number of through holes 7a, 7a,... Is inserted into the excavation groove 1A filled with the stabilizing liquid 9 such as bentonite at intervals. Next, as shown in FIG. 18, the hollow space forming tube 8 with the bottom is inserted into the hollow tube 13. Then, when the insertion of the space forming tube 8 is finished, a hardening additive is added to the stabilizing liquid 9 and stirred for hardening, or the stabilizing liquid 9 is replaced with cement, for example, as shown in FIG. Thus, the solidification material 10 is solidified. Finally, after the fluidity of the solidifying material 10 is lost or solidified, as shown in FIG. 20, the space forming tube 8 is pulled out, and the extracted space is used as a filling space, and then shown in FIG. As described above, a contaminant trapping substance is introduced into the hollow tube 7 and filled (see, for example, Patent Document 1).
Japanese Patent No. 3157017 (page 3)

しかしながら、上記工法では、捕捉杭６、６…を形成するにあたり、捕捉物質を収納する中空管７や空間形成管８等の部材を予め用意する必要があるため施工コストがかかっていた。また、施工工程においても多くの手間がかかっていた。   However, in the above construction method, it is necessary to prepare in advance the members such as the hollow tube 7 and the space forming tube 8 for storing the trapping substance when forming the trapping piles 6, 6. In addition, a lot of work was required in the construction process.

そこで、本発明の主たる課題は、施工コストや施工手間を低減させると共に、確実に汚染物質の拡散を防止する環境保全工法を提供することにある。   Then, the main subject of this invention is providing the environmental preservation construction method which prevents the spreading | diffusion of a contaminant reliably while reducing a construction cost and construction effort.

上記課題を解決した本発明は、次のとおりである。
＜請求項１記載の発明＞
請求項１記載の発明は、汚染されたまたは汚染の虞れがある領域の周囲またはその一部に、その領域から周辺への汚染物質の移動を阻止する遮断壁を構築する工法において、汚染物質を含む液を遮断して、前記汚染されたまたは汚染の虞れがある領域内に留める遮断壁を構築し、その後、汚染物質を吸着若しくは保持、又は分解する浄化杭を、前記遮断壁に連接するように、所定の間隔をもって構築する、ことを特徴とする環境保全工法である。 The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
The invention according to claim 1 is a construction method for constructing a barrier wall around or in a part of a contaminated area that is likely to be contaminated to prevent movement of the contaminant from the area to the surrounding area. Constructing a barrier wall that shuts off the liquid containing and stays in the contaminated or potentially contaminated area, and then connects a purification pile that adsorbs or retains or decomposes the contaminant to the barrier wall Thus, it is an environmental conservation construction method characterized by being constructed at a predetermined interval.

＜請求項２記載の発明＞
請求項２記載の発明は、汚染されたまたは汚染の虞れがある領域の周囲またはその一部に、その領域から周辺への汚染物質の移動を阻止する遮断壁を構築する工法において、汚染物質を吸着若しくは保持、又は分解する浄化杭を、所定の間隔をもって構築し、その後、汚染物質を含む液を遮断して、前記汚染されたまたは汚染の虞れがある領域内に留める遮断壁を前記浄化杭に連接して構築する、ことを特徴とする環境保全工法である。 <Invention of Claim 2>
According to a second aspect of the present invention, there is provided a method for constructing a barrier wall around or in a part of a contaminated area that is likely to be contaminated to prevent the movement of the contaminant from the area to the surrounding area. Constructing a purification pile that adsorbs, retains, or disassembles at a predetermined interval, and then shuts off the liquid containing the pollutant and keeps the barrier wall in the contaminated or potentially contaminated area It is an environmental conservation method that is constructed by connecting to a purification pile.

＜請求項３記載の発明＞
請求項３記載の発明は、移動可能なベースマシンと、対象地盤を溝掘削するカッターと、を備えたチェーンカッター方式掘削装置を用いて溝掘削して前記遮水壁を構築し、単軸若しくは多軸の掘削軸を備えた掘削装置を用いて掘削して前記浄化杭を構築する、請求項１又は２記載の環境保全工法である。 <Invention of Claim 3>
According to a third aspect of the present invention, the impermeable wall is constructed by excavating a groove using a chain cutter type excavator having a movable base machine and a cutter for excavating the target ground. It is an environmental conservation construction method of Claim 1 or 2 which excavates using the excavation apparatus provided with the multi-axis excavation axis | shaft, and builds the said purification | cleaning pile.

＜請求項４記載の発明＞
請求項４記載の発明は、単軸若しくは多軸の掘削軸を備えた掘削装置を用いて掘削して、前記遮水壁と前記浄化杭とを構築する、請求項１又は２記載の環境保全工法である。 <Invention of Claim 4>
Invention of Claim 4 excavates using the excavation apparatus provided with the single axis | shaft or the multi-axis excavation axis | shaft, and constructs the said impermeable wall and the said purification | cleaning pile, The environmental conservation of Claim 1 or 2 It is a construction method.

＜請求項５記載の発明＞
請求項５記載の発明は、矢板を用いて前記遮水壁を構築し、単軸若しくは多軸の掘削軸を備えた掘削装置を用いて隣接する矢板の間を掘削して前記浄化杭を構築する、請求項１又は２記載の環境保全工法である。 <Invention of Claim 5>
The invention according to claim 5 constructs the water-impervious wall using a sheet pile and constructs the purification pile by excavating between adjacent sheet piles using a drilling device having a single-axis or multi-axis drilling shaft. The environmental protection method according to claim 1 or 2.

（作用効果）
汚染物質を含む液を遮断して、汚染されたまたは汚染の虞れがある領域内に留める遮断壁を構築し、その後、汚染物質を吸着若しくは保持、又は分解する浄化杭を、遮断壁に連接するように、所定の間隔をもって構築することにより、遮断壁内に汚染物質が存在している状態で、主に遮断壁で汚染物質の遮断を図り、浄化杭の部分で汚染物質を吸着若しくは保持、又は分解することによって、確実に汚染物質の拡散を防止することができる。
捕捉物質を収納する中空管や空間形成管等の部材を予め用意して、遮断壁内に挿入する従来技術のものとは異なり、浄化杭の構築にあたってこれら部材を必要としないため施工コストを低減させることができると共に、施工作業の効率化を図ることができる。
そして、汚染物質を吸着若しくは保持、又は分解する浄化杭を、所定の間隔をもって構築し、その後、汚染物質を含む液を遮断して、汚染されたまたは汚染の虞れがある領域内に留める遮断壁を浄化杭に連接して構築しても上記課題を解決できる。
なお、遮水壁は、チェーンカッター方式掘削装置、単軸若しくは多軸の掘削軸を備えた掘削装置又は矢板を用いて構築することができ、浄化杭については単軸若しくは多軸の掘削軸を備えた掘削装置を用いて構築することができる。 (Function and effect)
Build up a barrier that shuts off liquid containing contaminants and stays in a contaminated or potentially contaminated area, and then connects a cleanup pile that adsorbs, retains, or decomposes the contaminants to the barrier By constructing at a predetermined interval, the contaminants are present in the barrier wall, mainly blocking the contaminants at the barrier wall, and adsorbing or holding the contaminants at the purification pile. Or by decomposing, it is possible to reliably prevent the diffusion of contaminants.
Unlike the conventional technology that prepares members such as hollow tubes and space forming tubes that contain the trapping substance in advance and inserts them into the barrier wall, these members are not required for the construction of the purification pile, so the construction cost is reduced. While being able to reduce, efficiency of construction work can be aimed at.
Then, construct a purification pile that adsorbs, retains, or decomposes pollutants at predetermined intervals, and then shuts off the liquid containing the pollutants and keeps them within the contaminated or potentially contaminated area. The above problem can be solved even if the wall is constructed by connecting to the purification pile.
The impermeable wall can be constructed by using a chain cutter type excavator, a excavator equipped with a single-axis or multi-axis excavation axis, or a sheet pile. It can be constructed using the provided excavator.

本発明によれば、施工コストや施工手間を低減させると共に、確実に汚染物質の拡散を防止することができる等の利点がもたらされる。   According to the present invention, it is possible to reduce the construction cost and the labor and at the same time bring advantages such as the prevention of the diffusion of contaminants.

以下、図１乃至図１４に基づき、本発明の実施の形態を説明する。なお、図１は本発明に係る一実施の形態（実施例１）における遮水壁を形成した状態を示す概要平面図であり、図２はその遮水壁に掘削孔を形成した状態を示す概要平面図であり、図３は実施例１における浄化杭と遮水壁を形成した状態を示す概要平面図であり、図４は実施例１における浄化杭の変形例（その１）の概要平面図であり、図５は実施例１における浄化杭の変形例（その２）の概要平面図であり、図６は実施例１の施工工程の派生形における、浄化杭を形成した状態を示す概要平面図であり、図７はその浄化杭に連接して掘削溝を形成した状態を示す概要平面図であり、図８は実施例１の施工工程の派生形における、浄化杭と遮水壁を形成した状態を示す概要平面図であり、図９は他の実施の形態（実施例２）における遮水壁を形成した状態を示す概要平面図であり、図１０は実施例２における浄化杭と遮水壁を形成した状態を示す概要平面図であり、図１１は実施例２の施工工程の派生形における、浄化杭を形成した状態を示す概要平面図であり、図１２は実施例２の施工工程の派生形における、浄化杭と遮水壁を形成した状態を示す概要平面図であり、図１３は実施例２における浄化杭の変形例の概要平面図であり、図１４はさらなる他の実施の形態（実施例３）における浄化杭と遮水壁を形成した状態を示す概要平面図である。   Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic plan view showing a state where a water-impervious wall is formed in an embodiment (Example 1) according to the present invention, and FIG. 2 shows a state where an excavation hole is formed in the impermeable wall. FIG. 3 is a schematic plan view, FIG. 3 is a schematic plan view showing a state in which a purification pile and a water-impervious wall in Example 1 are formed, and FIG. 4 is a schematic plan view of a modification example (No. 1) of the purification pile in Example 1. FIG. 5 is a schematic plan view of a modified example (No. 2) of the purification pile in the first embodiment, and FIG. 6 is an outline showing a state in which the purification pile is formed in a derivative form of the construction process in the first embodiment. FIG. 7 is a schematic plan view showing a state in which excavation grooves are formed by connecting to the purification pile, and FIG. 8 shows the purification pile and the impermeable wall in a derivative form of the construction process of the first embodiment. FIG. 9 is a schematic plan view showing the formed state, and FIG. 9 shows a water-impervious wall in another embodiment (Example 2). FIG. 10 is a schematic plan view showing a state in which a purification pile and a water shielding wall in Example 2 are formed, and FIG. 11 is a derivative form of the construction process in Example 2. FIG. 12 is a schematic plan view showing a state in which a purification pile is formed. FIG. 12 is a schematic plan view showing a state in which a purification pile and a water shielding wall are formed in a derivative form of the construction process of Example 2. FIG. FIG. 14 is a schematic plan view of a modified example of the purification pile in Example 2, and FIG. 14 is a schematic plan view showing a state in which the purification pile and a water shielding wall are formed in still another embodiment (Example 3).

本発明に係る環境保全工法は、汚染物質の移動を阻止する遮断壁と、この遮断壁に連設され、汚染物質を吸着若しくは保持、又は分解する浄化杭と、を構築する工法である。そして、遮断壁内に汚染物質が存在している状態で、主に遮断壁で汚染物質の遮断を図り、浄化杭の部分で汚染物質を吸着若しくは保持、又は分解することにより、確実に汚染物質の拡散を防止するものである。以下に、遮水壁材料、浄化材料及び本発明に係る環境保全工法の実施例について詳述する。   The environmental conservation method according to the present invention is a method of constructing a barrier wall that prevents the movement of contaminants and a purification pile that is connected to the barrier wall and that adsorbs, holds, or decomposes contaminants. And in the state where the pollutant exists in the barrier wall, the pollutant is surely blocked by mainly blocking the pollutant at the barrier wall and adsorbing, holding, or decomposing the pollutant at the purification pile part. Is intended to prevent the diffusion of Examples of the impermeable wall material, the purification material, and the environmental protection method according to the present invention will be described in detail below.

＜遮水壁材料＞
汚染されたまたは汚染の虞れがある領域の周囲またはその一部に、その領域から周辺への汚染物質の移動を阻止する遮断壁を構築するための遮水壁材料としては、ベントナイト懸濁液にセメント等の固化材を添加したセメントベントナイトを用いることができるが、地盤の変形等への追従性を持たせ、遮水性を長期にわたり確保する観点から、セメント等の固化材を添加しないことが好ましい。すなわち、粘土鉱物であるベントナイトの自己修復性に起因する、地盤変形に対する追従性を利用し、掘削土砂（原位置土）にベントナイト懸濁液などの粘土鉱物溶液を混合攪拌して形成するベントナイト泥水壁工法により遮水壁を形成することが好ましい。なお、遮水壁の透水係数としては、１×１０-6ｃｍ／ｓｅｃ以下が好ましい。 <Impermeable wall material>
Bentonite suspension is used as a water barrier material for building a barrier around or part of a contaminated or potentially contaminated area to prevent the movement of contaminants from that area to the surrounding area. Cement bentonite with cement or other solidifying material added can be used, but from the viewpoint of ensuring the ability to follow the deformation of the ground and ensuring water shielding over a long period of time, no cement or other solidifying material may be added. preferable. In other words, bentonite mud formed by mixing and stirring a clay mineral solution such as bentonite suspension to excavated soil (original soil) using the followability to ground deformation caused by the self-healing property of bentonite, a clay mineral. It is preferable to form a water-impervious wall by a wall construction method. The water permeability coefficient of the impermeable wall is preferably 1 × 10 −6 cm / sec or less.

＜浄化材料＞
本発明における浄化材料としては、有機汚染物質や重金属汚染物質を吸着又は保持する捕捉材料を利用することができる。 <Purification material>
As the purification material in the present invention, a trapping material that adsorbs or holds organic pollutants and heavy metal pollutants can be used.

捕捉材料に関しては、汚染物質を吸着または保持するもの、たとえば活性炭、ゼオライト、バーミキュライト、カオリン、ナトリウムベントナイト、シリカ、高炉スラグのほか、他の粘土鉱物を単独または複数混合した状態で用いることができる。この種のものには、イオン交換能力や吸着能力を有するので、これを利用することができる。汚染物質が、アンモニア性窒素などである場合には、これらに対応した捕捉材料を用いることができる。廃棄物の捨場には、多種の汚染物質がある場合がある。そこで、浄化杭における使用捕捉材料の種類を異ならせることができる。なお、捕捉材料は、単位粒子そのままでもよいが、ペレットのように団粒化または塊粒化させて使用することができる。   As the trapping material, those that adsorb or retain pollutants, such as activated carbon, zeolite, vermiculite, kaolin, sodium bentonite, silica, blast furnace slag, and other clay minerals can be used alone or in combination. This type has ion exchange ability and adsorption ability and can be used. When the pollutant is ammoniacal nitrogen or the like, a trapping material corresponding to these can be used. There may be a variety of pollutants in the waste dump. Therefore, the type of capture material used in the purification pile can be varied. The capturing material may be a unit particle as it is, but can be used after being aggregated or agglomerated like a pellet.

さらに、捕捉材料の表面は、他の捕捉材料、特に液との接触で経時的に溶解する材料でコーティングすることができる。具体的には、中核となる捕捉材料（捕捉中核材料）の表面を被覆する被膜として、水に溶解する材料を用いればよく、たとえばゼラチン、セルロース系材料、酢酸ビニル系材料を用いることができる。   In addition, the surface of the capture material can be coated with other capture materials, particularly materials that dissolve over time upon contact with a liquid. Specifically, a material that dissolves in water may be used as a coating film that covers the surface of the capture material that serves as the core (capture core material). For example, gelatin, a cellulose-based material, or a vinyl acetate-based material can be used.

また、上記の捕捉材料に限られず、浄化材料として、有機物等を分解する微生物を繁殖させる材料を利用してもよい。例えば、ポリ塩化ビニリデン、ポリプロピレン、ビニロン等の繊維、不織布、礫、あるいは鉄粉等の難分散性の材料などが考えられる。   Moreover, it is not restricted to said capture | acquisition material, You may utilize the material which propagates the microorganisms which decompose | disassemble organic substance etc. as a purification | cleaning material. For example, fibers such as polyvinylidene chloride, polypropylene, and vinylon, non-dispersible materials such as non-woven fabric, gravel, and iron powder can be considered.

＜実施例１＞
ＴＲＤ工法により遮水壁を構築する場合の環境保全工法について説明する。なお、ＴＲＤ工法とは、地盤に挿入したチェーン型のカッター（図示せず）をベースマシン（図示せず）と接続し、横方向に移動させて、溝の掘削と、原位置土との混合・撹拌等を行い、地中に連続した壁を造成する工法である。 <Example 1>
The environmental protection method in the case of constructing the impermeable wall by the TRD method will be described. The TRD method means that a chain cutter (not shown) inserted in the ground is connected to a base machine (not shown) and moved laterally to excavate the groove and mix with the soil in situ.・ It is a construction method that creates a continuous wall in the ground by stirring and the like.

まず、図１に示すように、ガイドウォール（図１では図示せず）を構築して、安定液としても機能する粘土鉱物溶液としてベントナイト懸濁液を吐出しながら、長い掘削溝１Ａを掘削し、チェーン型のカッターにより、掘削土砂（原位置土）とベントナイト懸濁液を混合攪拌して遮水壁１を構築する。その後、ベントナイト懸濁液の粘性度が上昇し、流動性がなくなってきた状態で、遮水壁１に重ねて、かつ遮水壁の長手方向に所望の間隔をもって、図２に示すように、単軸掘削機（図示せず）により遮水壁の一部を掘削して掘削孔２Ａ，２Ａ，…を形成し、掘削軸（図示せず）を引き上げながら、又は引き上げた後に前述した浄化材料を吐出して、図３に示すように、浄化杭２，２，…を構築する。図３では、遮水壁１の幅よりも浄化杭２，２，…の直径の方が大きくなっているが、これに限らず、浄化杭２，２，…の直径を遮水壁１の幅と同一径又は遮水壁１の幅より小さくして、遮水壁１の幅内に納めるかたちとしてもよい。   First, as shown in FIG. 1, a guide wall (not shown in FIG. 1) is constructed, and a long excavation groove 1A is excavated while discharging a bentonite suspension as a clay mineral solution that also functions as a stabilizing liquid. The impermeable earth (in-situ soil) and the bentonite suspension are mixed and stirred by a chain type cutter to construct the impermeable wall 1. After that, the viscosity of the bentonite suspension is increased and the fluidity is lost, and is superimposed on the impermeable wall 1 and at a desired interval in the longitudinal direction of the impermeable wall, as shown in FIG. A part of the impermeable wall is excavated by a single-axis excavator (not shown) to form excavation holes 2A, 2A,..., And the purification material described above while raising the excavation axis (not shown) or after raising Are constructed as shown in FIG. In FIG. 3, the diameter of the purification piles 2, 2,... Is larger than the width of the water shielding wall 1, but the diameter of the purification piles 2, 2,. The same diameter as the width or the width of the impermeable wall 1 may be smaller than the width of the impermeable wall 1.

これによって、遮断壁内に汚染物質が存在している状態で、主に遮断壁１で汚染物質の遮断を図り、浄化杭２，２，…の部分で汚染物質を吸着若しくは保持、又は分解することにより、確実に汚染物質の拡散を防止することができる。そして、捕捉物質を収納する中空管や空間形成管等の部材を予め用意する従来技術のものとは異なり、施工コストを低減させることができると共に、施工作業の効率化を図ることができる。   As a result, in the state where the pollutant is present in the barrier wall, the barrier wall 1 mainly blocks the pollutant, and adsorbs, holds, or decomposes the pollutant at the purification piles 2, 2,. In this way, it is possible to reliably prevent the diffusion of contaminants. And unlike the prior art thing which prepares members, such as a hollow tube and a space formation tube which accommodates a capture | acquisition substance beforehand, while being able to reduce construction cost, efficiency of construction work can be aimed at.

なお、図４に示すように、浄化杭を構築するにあたって、単軸掘削機に換えて、多軸掘削機により浄化杭２０，２０，…を形成してもよい。また、図５に示すように、掘削方向の遮水壁１の長手方向に対して直角になるように掘削して浄化杭２１，２１，…を形成してもよい。ここで、図４では３軸掘削機によるものを示しているが、これに限られず、４軸、５軸等でもよい。   As shown in FIG. 4, in constructing the purification pile, the purification piles 20, 20,... May be formed by a multi-axis excavator instead of the single-axis excavator. Moreover, as shown in FIG. 5, you may excavate so that it may become a right angle with respect to the longitudinal direction of the impermeable wall 1 of an excavation direction, and may form the purification | cleaning piles 21, 21, .... Here, although FIG. 4 shows a case using a three-axis excavator, the present invention is not limited to this, and four-axis, five-axis, etc. may be used.

さらに、図６に示すように、所望の間隔で浄化杭２，２，…を構築してから、その後、図７及び図８に示すように、これら浄化杭２，２，…に連接するように掘削溝１Ａを掘削し、掘削土砂（原位置土）とベントナイト懸濁液を混合攪拌して遮水壁１を構築してもよい。なお、この場合でも、図４及び図５のように、多軸掘削機によってもよい。   Further, as shown in FIG. 6, the purification piles 2, 2,... Are constructed at a desired interval, and then connected to the purification piles 2, 2,. Alternatively, the impermeable groove 1A may be excavated, and the impermeable wall 1 may be constructed by mixing and agitating the excavated sediment (original soil) and the bentonite suspension. Even in this case, a multi-axis excavator may be used as shown in FIGS.

＜実施例２＞
多軸掘削機により遮水壁を構築する場合の環境保全工法について説明する。
まず、図９に示すように、浄化杭２２，２２，…を構築するためのスペースを空けながら、多軸掘削機（図示せず）により掘削孔１１Ａ，１１Ａ，…を形成する。掘削の際には、安定液としても機能するベントナイト懸濁液を吐出しながら掘削し、掘削土砂（原位置土）とベントナイト懸濁液を混合攪拌して遮水壁１１，１１，…を構築する。そして、隣接する掘削孔１１Ａ，１１Ａの両端の孔に多軸掘削機の側端掘削軸をガイドさせながら、隣接する掘削孔１１Ａ，１１Ａの間にさらなる浄化杭用の掘削孔２２Ａ，２２Ａ，…を順次形成し、掘削軸（図示せず）を引き上げながら、又は引き上げた後に、前述した浄化材料を吐出して、図１０に示すように、浄化杭２２，２２，…を構築する。なお、本実施例では、多軸掘削機として３軸のものを想定しているが、これに限られず、４軸、５軸等でもよい。また、遮水壁を構築する際には、多軸掘削機ではなく、単軸掘削機によって掘削してもよい。浄化杭２を掘削する際にも、多軸掘削機ではなく、単軸掘削機によって掘削してもよい。さらに、図１３に示すように、１つの掘削孔ではなく、複数の掘削孔で浄化杭２３，２３，…を構築してもよい。 <Example 2>
The environmental conservation method when constructing the impermeable wall with a multi-axis excavator will be described.
First, as shown in FIG. 9, excavation holes 11A, 11A,... Are formed by a multi-axis excavator (not shown) while making a space for constructing the purification piles 22, 22,. During excavation, excavation is performed while discharging bentonite suspension, which also functions as a stabilizing liquid, and the impermeable earth (in-situ soil) and bentonite suspension are mixed and stirred to construct the impermeable walls 11, 11,. To do. And while making the side end excavation shaft of the multi-axis excavator guide the holes at both ends of the adjacent excavation holes 11A, 11A, further excavation holes 22A, 22A,. Are sequentially formed, and after the excavating shaft (not shown) is pulled up or pulled up, the purification material described above is discharged to construct the purification piles 22, 22,... In this embodiment, a multi-axis excavator is assumed to be a 3-axis type, but is not limited to this, and 4-axis, 5-axis, etc. may be used. Further, when the impermeable wall is constructed, it may be excavated not by a multi-axis excavator but by a single-axis excavator. When excavating the purification pile 2, it may be excavated not by a multi-axis excavator but by a single-axis excavator. Further, as shown in FIG. 13, the purification piles 23, 23,... May be constructed with a plurality of excavation holes instead of one excavation hole.

なお、図１１に示すように、遮水壁１１を構築するスペースを空けながら、浄化杭２２，２２，…を構築してから、その後、図１２に示すように、これら浄化杭２２，２２，…に連接するように遮水壁１１，１１，…を構築してもよい。   In addition, as shown in FIG. 11, after constructing the purification piles 22, 22,... While leaving a space for constructing the impermeable wall 11, as shown in FIG. The water shielding walls 11, 11,... May be constructed so as to be connected to.

＜実施例３＞
矢板を用いて遮水壁を構築する場合の環境保全工法について説明する。
浄化杭２４を構築するためのスペースを空けながら、連続壁状に矢板３Ａ，３Ａ，…を打ち込み、図１４に示すように、遮水壁３を形成する。そして、隣接する矢板の間に掘削孔２４Ａを形成し、掘削軸（図示せず）を引き上げながら、又は引き上げた後に、前述した浄化材料を吐出して、浄化杭２を構築する。この浄化杭２を構築する際には、単軸掘削機に換えて、多軸掘削機によって掘削してよい。なお、掘削の際、例えば、軟弱地盤等の場合には、安定液としてベントナイト懸濁液を吐出してもよい。 <Example 3>
The environmental conservation method when constructing a water-impervious wall using a sheet pile will be described.
The sheet piles 3A, 3A,... Are driven into a continuous wall shape while leaving a space for constructing the purification pile 24 to form the impermeable wall 3 as shown in FIG. Then, the excavation hole 24A is formed between adjacent sheet piles, and after the excavation shaft (not shown) is raised or raised, the purification material described above is discharged to construct the purification pile 2. When the purification pile 2 is constructed, it may be excavated by a multi-axis excavator instead of the single-axis excavator. In excavation, for example, in the case of soft ground, bentonite suspension may be discharged as a stabilizing liquid.

変形例として、矢板３Ａ，３Ａ，…を打ち込むスペースを空けながら、浄化杭２４を構築し、その後、この浄化杭２４に連接するように、矢板３Ａ，３Ａ，…を打ち込み遮水壁３を構築してもよい。   As a modification, the purification pile 24 is constructed while leaving a space for driving the sheet piles 3A, 3A,..., And then the sheet piles 3A, 3A,. May be.

実施例１における遮水壁を形成した状態を示す概要平面図である。It is an outline top view showing the state where the impermeable wall in Example 1 was formed. その遮水壁に掘削孔を形成した状態を示す概要平面図である。It is an outline top view showing the state where the excavation hole was formed in the impermeable wall. 実施例１における浄化杭と遮水壁を形成した状態を示す概要平面図である。It is a general | schematic top view which shows the state which formed the purification | cleaning pile and the impermeable wall in Example 1. FIG. 実施例１における浄化杭の変形例（その１）の概要平面図である。It is an outline top view of the modification (the 1) of the purification pile in Example 1. 実施例１における浄化杭の変形例（その２）の概要平面図である。It is an outline top view of the modification (the 2) of the purification pile in Example 1. 実施例１の施工工程の派生形における、浄化杭を形成した状態を示す概要平面図である。It is a general | schematic top view which shows the state which formed the purification pile in the derivative form of the construction process of Example 1. FIG. その浄化杭に連接して掘削溝を形成した状態を示す概要平面図である。It is a schematic plan view which shows the state which connected with the purification | cleaning pile and formed the excavation groove. 実施例１の施工工程の派生形における、浄化杭と遮水壁を形成した状態を示す概要平面図である。It is a general | schematic top view which shows the state which formed the purification pile and the water-impervious wall in the derivative form of the construction process of Example 1. FIG. 実施例２における遮水壁を形成した状態を示す概要平面図である。It is an outline top view showing the state where the impermeable wall in Example 2 was formed. 実施例２における浄化杭と遮水壁を形成した状態を示す概要平面図である。It is a general | schematic top view which shows the state which formed the purification | cleaning pile and the impermeable wall in Example 2. FIG. 実施例２の施工工程の派生形における、浄化杭を形成した状態を示す概要平面図である。It is a general | schematic top view which shows the state which formed the purification pile in the derivative form of the construction process of Example 2. FIG. 実施例２の施工工程の派生形における、浄化杭と遮水壁を形成した状態を示す概要平面図である。It is a general | schematic top view which shows the state which formed the purification pile and the water-impervious wall in the derivative form of the construction process of Example 2. FIG. 実施例２における浄化杭の変形例の概要平面図である。It is an outline top view of a modification of a purification pile in Example 2. 実施例３における浄化杭と遮水壁を形成した状態を示す概要平面図である。It is a general | schematic top view which shows the state which formed the purification | cleaning pile and the impermeable wall in Example 3. FIG. 施工対象領域の概念図である。It is a conceptual diagram of a construction object area. 従来例の施工完了状態を示す遮断壁の水平断面図である。It is a horizontal sectional view of a barrier wall showing a construction completion state of a conventional example. 従来例における掘削溝内に中空管を挿入した状態を示す概要断面図である。It is a schematic sectional drawing which shows the state which inserted the hollow pipe in the excavation groove in a prior art example. 中空管内に空間形成管を挿入した状態を示す概要断面図である。It is a schematic sectional drawing which shows the state which inserted the space formation pipe | tube in the hollow pipe. 安定液に固化性材料を入れた状態を示す概要断面図である。It is a schematic sectional drawing which shows the state which put the solidification material in the stable liquid. 中空管内から空間形成管を引き抜いた状態を示す概要断面図である。It is a schematic sectional drawing which shows the state which pulled out the space formation tube from the inside of a hollow tube. 中空管内に汚染物質の捕捉物質を投入して捕捉杭を形成した状態を示す概要断面図である。It is a schematic sectional drawing which shows the state which injected | thrown-in the contaminant capture | acquisition substance in the hollow tube, and formed the capture pile.

符号の説明Explanation of symbols

１…遮断壁、１Ａ…掘削溝１Ａ、２…浄化杭、２Ａ…掘削孔、３…遮水壁、３Ａ…矢板、４…不透水層、５Ａ，５Ｂ…不透水層シート、６…捕捉杭、７…中空管、７ａ…透孔、８…空間形成管、９…安定液、１０…固化性材料、１１…遮水壁、１１Ａ…掘削孔、２０，２１，２２，２３，２４…浄化杭、２４Ａ…掘削孔、Ｈ…廃棄物。   DESCRIPTION OF SYMBOLS 1 ... Barrier wall, 1A ... Excavation groove 1A, 2 ... Purification pile, 2A ... Excavation hole, 3 ... Impermeable wall, 3A ... Sheet pile, 4 ... Impervious layer, 5A, 5B ... Impervious layer sheet, 6 ... Capture pile 7 ... hollow tube, 7a ... through-hole, 8 ... space forming tube, 9 ... stabilizing liquid, 10 ... solidifying material, 11 ... impermeable wall, 11A ... excavation hole, 20, 21, 22, 23, 24 ... Purification pile, 24A ... excavation hole, H ... waste.

Claims (5)

汚染されたまたは汚染の虞れがある領域の周囲またはその一部に、その領域から周辺への汚染物質の移動を阻止する遮断壁を構築する工法において、
汚染物質を含む液を遮断して、前記汚染されたまたは汚染の虞れがある領域内に留める遮断壁を構築し、
その後、汚染物質を吸着若しくは保持、又は分解する浄化杭を、前記遮断壁に連接するように、所定の間隔をもって構築する、
ことを特徴とする環境保全工法。 In a construction method of building a barrier wall around or part of a contaminated or potentially contaminated area to prevent the movement of contaminants from that area to the surrounding area,
Constructing a barrier that blocks the liquid containing the contaminant and stays within the contaminated or potentially contaminated area;
Thereafter, a purification pile for adsorbing or holding or decomposing contaminants is constructed at a predetermined interval so as to be connected to the barrier wall.
Environmental conservation method characterized by that. 汚染されたまたは汚染の虞れがある領域の周囲またはその一部に、その領域から周辺への汚染物質の移動を阻止する遮断壁を構築する工法において、
汚染物質を吸着若しくは保持、又は分解する浄化杭を、所定の間隔をもって構築し、
その後、汚染物質を含む液を遮断して、前記汚染されたまたは汚染の虞れがある領域内に留める遮断壁を前記浄化杭に連接して構築する、
ことを特徴とする環境保全工法。 In a construction method of building a barrier wall around or part of a contaminated or potentially contaminated area to prevent the movement of contaminants from that area to the surrounding area,
Build a purification pile that adsorbs, retains, or decomposes pollutants at predetermined intervals,
And then constructing a barrier wall connected to the purification pile that shuts off the liquid containing the pollutant and keeps it in the contaminated or potentially contaminated area,
Environmental conservation method characterized by that. 移動可能なベースマシンと、対象地盤を溝掘削するカッターと、を備えたチェーンカッター方式掘削装置を用いて溝掘削して前記遮水壁を構築し、
単軸若しくは多軸の掘削軸を備えた掘削装置を用いて掘削して前記浄化杭を構築する、請求項１又は２記載の環境保全工法。 Using the chain cutter type excavator equipped with a movable base machine and a cutter for excavating the target ground, constructing the impermeable wall by excavating the groove,
The environmental conservation construction method according to claim 1 or 2, wherein the purification pile is constructed by excavating using a drilling device having a single-axis or multi-axis drilling shaft. 単軸若しくは多軸の掘削軸を備えた掘削装置を用いて掘削して、前記遮水壁と前記浄化杭とを構築する、請求項１又は２記載の環境保全工法。   The environmental conservation method according to claim 1 or 2, wherein the water shielding wall and the purification pile are constructed by excavating using a drilling device having a single-axis or multi-axis drilling shaft. 矢板を用いて前記遮水壁を構築し、単軸若しくは多軸の掘削軸を備えた掘削装置を用いて隣接する矢板の間を掘削して前記浄化杭を構築する、請求項１又は２記載の環境保全工法。   The said impervious wall is constructed | assembled using a sheet pile, The said pile is excavated between adjacent sheet piles using the excavation apparatus provided with the single axis | shaft or the multi-axis excavation axis, The purification pile is built. Environmental conservation method.
JP2005219644A 2005-07-28 2005-07-28 Environmental conservation method Active JP5072201B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005219644A JP5072201B2 (en) 2005-07-28 2005-07-28 Environmental conservation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005219644A JP5072201B2 (en) 2005-07-28 2005-07-28 Environmental conservation method

Publications (3)

Publication Number Publication Date
JP2007029904A true JP2007029904A (en) 2007-02-08
JP2007029904A5 JP2007029904A5 (en) 2008-08-28
JP5072201B2 JP5072201B2 (en) 2012-11-14

Family

ID=37789801

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005219644A Active JP5072201B2 (en) 2005-07-28 2005-07-28 Environmental conservation method

Country Status (1)

Country Link
JP (1) JP5072201B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011020057A (en) * 2009-07-16 2011-02-03 Japan Found Eng Co Ltd Soil contamination cleaning zone construction method, soil contamination cleaning zone and soil contamination cleaning method
US10181266B2 (en) 2015-09-11 2019-01-15 Sony Corporation System and method to provide driving assistance

Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03107016A (en) * 1989-09-21 1991-05-07 Mitsui Constr Co Ltd Cut-off wall construction method and slit drilling machine used therefor
JPH04182512A (en) * 1990-02-07 1992-06-30 Shimizu Corp Underground structure and construction method thereof
JPH059925A (en) * 1991-06-28 1993-01-19 Taisei Corp Purification method for contaminated underground water
JPH0576619A (en) * 1991-09-24 1993-03-30 Nippon Solid Co Ltd Method for removing harmful matter in earth of the like
JPH05115862A (en) * 1991-08-13 1993-05-14 Raito Kogyo Co Ltd Environmental protection technique and structure of interruption wall for environmental protection
JPH05263420A (en) * 1992-03-19 1993-10-12 Central Res Inst Of Electric Power Ind Outflow preventing method for trace element material
JPH0812033A (en) * 1994-06-29 1996-01-16 P F C:Kk Harmful substance leak preventing structure for refuse buried place
JPH0947737A (en) * 1995-08-04 1997-02-18 Ohbayashi Corp Impervious wall and its building method
JPH11156351A (en) * 1997-11-27 1999-06-15 Taisei Corp Continuous groundwater purification wall and groundwater purification method
JP2000120061A (en) * 1998-10-12 2000-04-25 Seiko Kogyo Kk Underground water purifying wall and its forming method
JP2000160549A (en) * 1998-11-27 2000-06-13 Takenaka Doboku Co Ltd Ground improvement device, ground improvement method, and execution work control method for lap length of improved soil column train pile
JP2000186336A (en) * 1998-12-22 2000-07-04 Zenitaka Corp Ground water environmental preservation method
JP2000263068A (en) * 1999-03-19 2000-09-26 Taisei Corp Permeable ground water purifying wall and ground water purifying wall
JP3157017B2 (en) * 1991-08-13 2001-04-16 ライト工業株式会社 Environmental protection method
JP2001145873A (en) * 1999-11-24 2001-05-29 Ohbayashi Corp Method and structure for treating organochlorine compound
JP2001207444A (en) * 2000-01-28 2001-08-03 Taisei Corp Impervious wall and its construction method
JP2002079206A (en) * 2000-09-11 2002-03-19 Kawasaki Steel Corp Water shielding wall for preventing contaminated water from flowing out
JP2002126714A (en) * 2000-10-20 2002-05-08 Abekogyosho Co Ltd Structure for preventing harmful substance in soil from leaking and method for forming this structure
JP2004195410A (en) * 2002-12-20 2004-07-15 Tenox Corp Method for building soil cement solidified body in contaminated soil and soil treatment apparatus
JP2004225343A (en) * 2003-01-22 2004-08-12 Raito Kogyo Co Ltd Chain cutter for underground continuous wall excavator
JP2005016295A (en) * 2003-06-06 2005-01-20 Raito Kogyo Co Ltd Construction method for underground impervious wall
JP2005021730A (en) * 2003-06-30 2005-01-27 Ohbayashi Corp Wall for preventing diffusion of volatile organic compound and method for constructing the wall

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03107016A (en) * 1989-09-21 1991-05-07 Mitsui Constr Co Ltd Cut-off wall construction method and slit drilling machine used therefor
JPH04182512A (en) * 1990-02-07 1992-06-30 Shimizu Corp Underground structure and construction method thereof
JPH059925A (en) * 1991-06-28 1993-01-19 Taisei Corp Purification method for contaminated underground water
JP3157017B2 (en) * 1991-08-13 2001-04-16 ライト工業株式会社 Environmental protection method
JPH05115862A (en) * 1991-08-13 1993-05-14 Raito Kogyo Co Ltd Environmental protection technique and structure of interruption wall for environmental protection
JPH0576619A (en) * 1991-09-24 1993-03-30 Nippon Solid Co Ltd Method for removing harmful matter in earth of the like
JPH05263420A (en) * 1992-03-19 1993-10-12 Central Res Inst Of Electric Power Ind Outflow preventing method for trace element material
JPH0812033A (en) * 1994-06-29 1996-01-16 P F C:Kk Harmful substance leak preventing structure for refuse buried place
JPH0947737A (en) * 1995-08-04 1997-02-18 Ohbayashi Corp Impervious wall and its building method
JPH11156351A (en) * 1997-11-27 1999-06-15 Taisei Corp Continuous groundwater purification wall and groundwater purification method
JP2000120061A (en) * 1998-10-12 2000-04-25 Seiko Kogyo Kk Underground water purifying wall and its forming method
JP2000160549A (en) * 1998-11-27 2000-06-13 Takenaka Doboku Co Ltd Ground improvement device, ground improvement method, and execution work control method for lap length of improved soil column train pile
JP2000186336A (en) * 1998-12-22 2000-07-04 Zenitaka Corp Ground water environmental preservation method
JP2000263068A (en) * 1999-03-19 2000-09-26 Taisei Corp Permeable ground water purifying wall and ground water purifying wall
JP2001145873A (en) * 1999-11-24 2001-05-29 Ohbayashi Corp Method and structure for treating organochlorine compound
JP2001207444A (en) * 2000-01-28 2001-08-03 Taisei Corp Impervious wall and its construction method
JP2002079206A (en) * 2000-09-11 2002-03-19 Kawasaki Steel Corp Water shielding wall for preventing contaminated water from flowing out
JP2002126714A (en) * 2000-10-20 2002-05-08 Abekogyosho Co Ltd Structure for preventing harmful substance in soil from leaking and method for forming this structure
JP2004195410A (en) * 2002-12-20 2004-07-15 Tenox Corp Method for building soil cement solidified body in contaminated soil and soil treatment apparatus
JP2004225343A (en) * 2003-01-22 2004-08-12 Raito Kogyo Co Ltd Chain cutter for underground continuous wall excavator
JP2005016295A (en) * 2003-06-06 2005-01-20 Raito Kogyo Co Ltd Construction method for underground impervious wall
JP2005021730A (en) * 2003-06-30 2005-01-27 Ohbayashi Corp Wall for preventing diffusion of volatile organic compound and method for constructing the wall

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011020057A (en) * 2009-07-16 2011-02-03 Japan Found Eng Co Ltd Soil contamination cleaning zone construction method, soil contamination cleaning zone and soil contamination cleaning method
US10181266B2 (en) 2015-09-11 2019-01-15 Sony Corporation System and method to provide driving assistance

Also Published As

Publication number Publication date
JP5072201B2 (en) 2012-11-14

Similar Documents

Publication Publication Date Title
JP5971606B1 (en) Soil purification method
US6207114B1 (en) Reactive material placement technique for groundwater treatment
JP2002018413A (en) Ground improving method for confining heavy metal- contaminated soil in present position
JP5072201B2 (en) Environmental conservation method
JP3367042B2 (en) Pile construction method
JP2003010832A (en) Polluted soil cleaning method
JP2002079233A (en) Underground wall for soil cleaning
KR101838676B1 (en) Soil remediation method by in-situ replacement of contaminated soil considering structural stability of small areas and polluted blocks adjacent to facilities
JP2002346539A (en) Method for cleaning polluted soil
JP3160016B2 (en) Environmental protection method
JP5042278B2 (en) Contaminated soil purification method
JP2005185982A (en) Method and system for cleaning contaminated soil
JP3572567B2 (en) Pile construction method
JP2007254965A (en) Soil replacing method by all casing method
JP3037473B2 (en) Contaminant barrier material
JP5020683B2 (en) Containment method for contaminated soil
JP2002371543A (en) Method for purifying soil
JP3724967B2 (en) How to repair contaminated soil
JP2005161124A (en) System and method for purifying contaminated ground water
KR102681726B1 (en) In-situ expansion agitation type solidification stabilization construction method in the lower part of a building using a desiccant
JP3157017B2 (en) Environmental protection method
JP3311733B2 (en) Contaminated soil containment treatment method and foundation structure construction method
JP2002079206A (en) Water shielding wall for preventing contaminated water from flowing out
JP4199152B2 (en) Impermeable wall
JP4167563B2 (en) Contaminated groundwater purification structure

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080711

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080711

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100226

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110909

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20111020

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20111021

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120615

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120730

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120817

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120821

R150 Certificate of patent or registration of utility model

Ref document number: 5072201

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150831

Year of fee payment: 3