JP2003154328A - Installation method of impermeable sheet on wall - Google Patents
Installation method of impermeable sheet on wallInfo
- Publication number
- JP2003154328A JP2003154328A JP2001359272A JP2001359272A JP2003154328A JP 2003154328 A JP2003154328 A JP 2003154328A JP 2001359272 A JP2001359272 A JP 2001359272A JP 2001359272 A JP2001359272 A JP 2001359272A JP 2003154328 A JP2003154328 A JP 2003154328A
- Authority
- JP
- Japan
- Prior art keywords
- water
- sheet
- metal plate
- protective mat
- 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
Links
- 238000000034 method Methods 0.000 title claims description 20
- 238000009434 installation Methods 0.000 title claims description 5
- 230000001681 protective effect Effects 0.000 claims abstract description 51
- 239000002184 metal Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 230000000903 blocking effect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 34
- 101100491335 Caenorhabditis elegans mat-2 gene Proteins 0.000 abstract description 19
- 230000037303 wrinkles Effects 0.000 abstract description 14
- 230000006866 deterioration Effects 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 description 7
- 235000006506 Brasenia schreberi Nutrition 0.000 description 4
- 244000267222 Brasenia schreberi Species 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 101100495256 Caenorhabditis elegans mat-3 gene Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- -1 or Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920002397 thermoplastic olefin Polymers 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
(57)【要約】
【課題】 施工能率の著しい向上及び施工費用の低減が
図れるだけでなく、弛み皺の発生を抑制して遮水シート
及び保護マットの破損や外観低下を防止できるようにす
る。
【解決手段】 コンクリート製の壁面１Ｂに敷設した保
護マット２の表面上に遮水シート３を重ね敷設し、この
遮水シート３表面の複数箇所に当接され、かつ、エア式
釘打機を用いたピン形アンカー５Ｃの打ち込みにより壁
面１Ｂに固定される金属プレート４によって遮水シート
３及び保護マット２を壁面１Ｂに押圧し固定すること
で、不透水な表面遮水工を施工する。
(57) [Summary] [PROBLEMS] To not only remarkably improve construction efficiency and reduce construction costs, but also to suppress the occurrence of loose wrinkles and prevent breakage of water-impervious sheet and protective mat and deterioration of appearance. . SOLUTION: A water-impervious sheet 3 is laid on the surface of a protective mat 2 laid on a concrete wall surface 1B, and is contacted with a plurality of places on the surface of the water-impervious sheet 3; The water-impermeable sheet 3 and the protection mat 2 are pressed and fixed to the wall surface 1B by the metal plate 4 fixed to the wall surface 1B by driving the used pin-shaped anchor 5C, thereby constructing an impermeable surface water-impervious work.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば廃棄物の埋
立て処分場や農業用貯水池等を形成するコンクリート製
の壁面に、遮水シートを該遮水シートの破損防止のため
の保護マットと共に壁面に固定して敷設する壁面への遮
水シート施工方法に関する。詳しくは、コンクリート製
の壁面に保護マットを敷設した後、この保護マットの表
面上に遮水シートを重ねて敷設し、この遮水シート及び
保護マットを壁面に固定することにより、不透水な表面
遮水工を施工する壁面への遮水シート施工方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete wall forming, for example, a landfill site for wastes or a reservoir for agriculture, and a water impervious sheet together with a protective mat for preventing damage to the impermeable sheet. The present invention relates to a method of constructing a waterproof sheet on a wall that is fixed and laid on the wall. Specifically, after laying a protective mat on a concrete wall surface, laying a waterproof sheet on the surface of this protective mat and laying the waterproof sheet and protective mat on the wall surface, impermeable surface The present invention relates to a method of constructing a waterproof sheet on a wall surface for constructing a waterproofing work.
【０００２】[0002]
【従来の技術】この種の壁面への遮水シート施工方法と
して、従来では、遮水シートの端部を壁面の天端部にお
いてフラットバーで押え固定した上、その押え固定箇所
から底盤部までの遮水シートを伸ばしながら法面等の壁
面に沿わせるように敷設するフラットバー押え工法、遮
水シートを壁面に対して接着剤を用いて密着状態に接着
固定して敷設する接着工法、あるいは、アンカー付パネ
ル状の遮水シートを壁面形成用コンクリート型枠にセッ
トしてコンクリートを打設し、型枠の離型後、壁面側に
残存しているパネル状遮水シート同士を接合するコンク
リート打設一体工法が採用されていた。2. Description of the Related Art Conventionally, as a method of constructing a water blocking sheet on a wall of this type, conventionally, the end of the water blocking sheet is pressed and fixed by a flat bar at the top end of the wall, and then the pressing fixing point to the bottom plate portion. Flat bar pressing method of laying out the water blocking sheet while laying it along the wall such as the slope, adhesive method of laying the water blocking sheet in close contact with the wall surface using an adhesive, or , Concrete that sets panel-shaped impermeable sheets with anchors into a wall-forming concrete formwork, places concrete, and joins the panel-shaped impermeable sheets that remain on the wall side after mold release The integrated construction method was used.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、フラッ
トバー押え工法の場合は、遮水シートの熱膨張や自重等
によって伸ばされたシート弛み皺が底盤部に集中し、そ
の弛み皺が土砂等の廃棄物で拘束されると、低温時にシ
ートに収縮応力が発生したとき、シート固定部分が破損
される可能性がある。また、壁面と遮水シートの間に敷
設されている保護マットとして繊維補強されていない強
度の弱いものを用いると、この保護マット自身も遮水シ
ートと同様にその底盤部で弛み皺が発生して外観上好ま
しくない事態を生じるだけでなく、水分等を吸収して自
重が増加することで破断する可能性もあった。さらに、
端部あるいは端部と中間部をホールインアンカーの打ち
込みにより固定するために、コンクリート製壁面にアン
カーホールをあける際、ドリルを用いて遮水シート及び
保護マットも同時に穴明けするが、このとき、ドリルに
遮水シートや保護マットが巻き付きやすく、この巻き付
きによる破損等がないようにするには、ドリルを低速回
転させながら一つ一つ慎重に穴明けする必要があって、
固定作業自体、ひいては、遮水シート施工作業全体とし
て非常に膨大な時間を要し、施工能率の面で大きな問題
があった。However, in the case of the flat bar pressing method, sheet slack wrinkles stretched by the thermal expansion of the impermeable sheet or its own weight are concentrated on the bottom plate portion, and the slack wrinkles are discarded as earth and sand. When restrained by an object, when the sheet contracts at low temperature, the sheet fixing portion may be damaged. If a protective mat that is not reinforced with fibers and has a low strength is used as the protective mat laid between the wall surface and the water-blocking sheet, the protective mat itself will have slack wrinkles on its bottom plate as well as the water-blocking sheet. This not only causes an unfavorable appearance, but also causes breakage due to an increase in its own weight due to absorption of water or the like. further,
In order to fix the end part or the end part and the middle part by driving in the hole-in anchor, when opening the anchor hole in the concrete wall surface, the water shield sheet and the protective mat are also drilled at the same time, but at this time, It is easy to wrap the water shield sheet and protective mat around the drill, and in order to prevent damage due to this wrapping, it is necessary to carefully drill each one while rotating the drill at low speed,
The fixing work itself, and by extension, the entire work of constructing the water-blocking sheet, requires a very large amount of time, which poses a serious problem in terms of construction efficiency.
【０００４】また、接着工法の場合は、接着剤の塗布に
多大な作業時間を要し施工能率が非常に悪いだけでな
く、下地である壁面が凹凸のほとんどない程に非常に平
坦かつ平滑でなければ、全面を一様に接着固定すること
ができず、弛み皺の発生に伴って上述のごとき破損や外
観低下の発生は避けられない。また、接着作業用の足場
等を設置しないと、施工が不能あるいは不完全であると
いったように、施工に多くの制約条件があり、廃棄物の
埋立て処分場のような大規模面積の壁面への施工には能
率面、費用面から実質的に採用することができない。In addition, in the case of the bonding method, it takes a lot of working time to apply the adhesive and the working efficiency is very poor, and the wall surface as the base is very flat and smooth so that there is almost no unevenness. If it is not, the entire surface cannot be bonded and fixed uniformly, and the occurrence of slack wrinkles and the above-mentioned damage and deterioration of appearance are unavoidable. In addition, there are many constraints on construction, such as construction being impossible or incomplete unless scaffolding for bonding work is installed. It cannot be practically used for the construction because of its efficiency and cost.
【０００５】さらに、コンクリート打設一体工法の場合
は、バネル状遮水シートの単位サイズがコンクリート型
枠の大きさに制約されて非常に小さいために、離型後の
遮水シート同士の接合部が非常に多くなり、全体施工能
率が上述した他の工法に比べても一層悪い。加えて、遮
水シートをコンクリート型枠にセットする際に該パネル
状遮水シートに穴を明ける必要があるため、遮水シート
自身の遮水性能等が低下しやすいという品質上の問題が
あった。Further, in the case of the concrete pouring integrated construction method, since the unit size of the panel-shaped impermeable sheet is very small because it is restricted by the size of the concrete form, the joint between the impermeable sheets after releasing the mold. However, the overall construction efficiency is even worse than the other construction methods described above. In addition, since it is necessary to make a hole in the panel-shaped impermeable sheet when the impermeable sheet is set on the concrete form, there is a quality problem that the impermeable performance of the impermeable sheet itself tends to deteriorate. It was
【０００６】本発明は上記のような実情に鑑みてなされ
たもので、施工能率の著しい向上及び施工費用の低減が
図れるだけでなく、弛み皺の発生を抑制して遮水シート
及び保護マットの破損や外観低下を防止することができ
る壁面への遮水シート施工方法を提供することを目的と
している。The present invention has been made in view of the above circumstances, and not only can the construction efficiency be remarkably improved and the construction cost can be reduced, but also the occurrence of slack wrinkles can be suppressed and the waterproof sheet and the protective mat can be suppressed. It is an object of the present invention to provide a method for constructing a water blocking sheet on a wall surface that can prevent damage and deterioration of appearance.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る壁面への遮水シート施工方法は、コン
クリート製の壁面に保護マットを敷設した後、この保護
マットの表面上に遮水シートを重ねて敷設し、この遮水
シート及び保護マットを壁面に固定して不透水な表面遮
水工を施工する壁面への遮水シート施工方法であって、
敷設後の遮水シート表面の複数箇所に、アンカー打込用
貫通孔を有する金属プレートを当接させ状態で、この金
属プレートの貫通孔を通じてエア式の釘打機を用いてア
ンカーを打ち込んで金属プレートを壁面に固定すること
により遮水シート及び保護マットを金属プレートにより
壁面に押圧し固定することを特徴とするものである。In order to achieve the above-mentioned object, a method of constructing a water barrier sheet on a wall surface according to the present invention is such that after a protective mat is laid on a concrete wall surface, the protective mat is placed on the surface of the protective mat. A method of constructing a water-impervious sheet on a wall surface, in which water-impermeable sheets are laid one on top of the other, and this water-impermeable sheet and protective mat are fixed to the wall surface for impermeable surface impermeable construction.
After laying the metal plate with the anchor driving through-holes at multiple points on the surface of the water-impervious sheet after laying, the anchors are driven through the through-holes of the metal plate using an air-type nailing machine. By fixing the plate to the wall surface, the water blocking sheet and the protective mat are pressed and fixed to the wall surface by the metal plate.
【０００８】上記のような本発明によれば、壁面に敷設
後の遮水シート表面の複数箇所に金属プレートを当接さ
せ、この金属プレートの貫通孔を通じてエア式釘打機を
用いてアンカーを打ち込むことで金属プレートを介して
遮水シート及びその下層の保護マットを壁面に押圧し固
定するといった機械化作業の導入により、従来の押えバ
ー工法、接着工法あるいはコンクリート打設一体工法に
比べて、作業手数が少なくかつ簡単であり、全体施工能
率の著しい向上及び施工費用の削減が図れるとともに、
壁面への固定時に遮水シートや保護マットが破損される
などの品質低下をほとんど生じない上に、固定敷設後の
弛み皺の発生を抑制することが可能であるため、施工後
の長期間経過後においても遮水シート及び保護マットの
破損に伴う不透水性能の低下や外観低下などを防止する
ことが可能である。According to the present invention as described above, metal plates are brought into contact with a plurality of positions on the surface of the water-blocking sheet after being laid on the wall surface, and the anchor is attached through the through holes of the metal plate using an air type nailer. By introducing mechanized work such as pressing and fixing the water blocking sheet and the protective mat of the lower layer on the wall surface through the metal plate by driving, compared with the conventional press bar method, bonding method or concrete placing integrated method The number of steps is small and simple, the overall construction efficiency can be significantly improved and the construction cost can be reduced.
The quality of the waterproof sheet and protective mat will not be damaged when it is fixed to the wall surface, and the occurrence of loose wrinkles after the fixed laying can be suppressed. Even afterward, it is possible to prevent deterioration of water impermeability and deterioration of appearance due to breakage of the waterproof sheet and protective mat.
【０００９】また、施工用足場等の設置や施工対象であ
る壁面が平坦かつ平滑でなければならないといった施工
上の制約条件が一切ないために、廃棄物の埋立て処分場
のような大規模面積の壁面に対しても有効に適用するこ
とが可能である。Further, since there are no constraints on construction, such as installation of scaffolds for construction and the wall surface to be constructed must be flat and smooth, a large-scale area such as a landfill disposal site for waste. It can be effectively applied to the wall surface of.
【００１０】特に、本発明に係る施工方法における遮水
シートとして、請求項２に記載のように、線膨張係数が
小さく、かつ、熱融着可能な材料から構成されたものを
使用することによって、熱膨張や自重による弛み皺の発
生を一層軽減できるとともに、隣接して敷設された遮水
シート同士を、従来からも使用されている自走式熱融着
機を用いて能率よく接合することができる。In particular, as the water-blocking sheet in the construction method according to the present invention, as described in claim 2, by using a sheet having a small coefficient of linear expansion and made of a heat-fusible material. , It is possible to further reduce the occurrence of slack wrinkles due to thermal expansion and self-weight, and to efficiently bond the water-impermeable sheets that are laid adjacent to each other using the self-propelled heat fusion machine that has been used conventionally. You can
【００１１】また、本発明に係る施工方法で用いる金属
プレートとして、請求項３に記載のように、アンカー打
込用貫通孔の周辺部にアンカーの打ち込みに伴い遮水シ
ート及び保護マットに食い込む複数のスパイク状突起が
設けられているものを使用することによって、遮水シー
トを保護マットに対しても強固に固定させることが可能
であり、遮水シートの弛み皺の発生を一層軽減すること
ができる。Further, as a metal plate used in the construction method according to the present invention, as described in claim 3, a plurality of metal plates that bite into the water-blocking sheet and the protective mat when the anchor is driven around the anchor driving through hole. It is possible to firmly fix the impermeable sheet to the protection mat by using the one with the spike-shaped projections, and it is possible to further reduce the occurrence of loose wrinkles on the impermeable sheet. it can.
【００１２】さらに、本発明に係る施工方法において、
壁面にアンカーを介して固定された金属プレートの表面
を、請求項４に記載のように、遮水性を有しかつ遮水シ
ートに対して熱融着可能な材料からなるパッチシートで
被覆することによって、固定部分の遮水性能を確保でき
るだけでなく、パッチシートに対するバキュームテスト
あるいはアンテナ式スパークテストを実施して固定部分
の水密性を容易に確認することができる。Further, in the construction method according to the present invention,
The surface of the metal plate fixed to the wall surface via an anchor is covered with a patch sheet made of a material having a water-blocking property and capable of being heat-sealed to the water-blocking sheet as described in claim 4. By this, not only can the water impermeability of the fixed portion be ensured, but also the water tightness of the fixed portion can be easily confirmed by performing a vacuum test or an antenna spark test on the patch sheet.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態を図面
にもとづいて説明する。図１は本発明に係る壁面への遮
水シート施工方法により施工された廃棄物の埋立て処分
場の断面構造である。この廃棄物の埋立て処分場１は、
天端部１Ａから壁面となる法面１Ｂ及び底盤部１Ｃまで
がコンクリート打設により一体形成されている。このコ
ンクリート製の天端部１Ａ、法面１Ｂ及び底盤部１Ｃに
は、例えばポリエステル長繊維不織布よりなる保護マッ
ト２あるいは樹脂補強ネットと反毛フェルトを積層して
なる保護マット２が敷設されているとともに、この保護
マット２の表面上に、線膨張係数が小さく、かつ、熱融
着可能な材料、例えばオレフィン系熱可塑性エラストマ
ーや、カーボンブラックを均一に分散させた高密度ポリ
エチレン樹脂、ポリエステル基布を芯材としてゴム等か
らシート状に構成された遮水シート３が重ね敷設され、
これら遮水シート３及び保護マット２を天端部１Ａ、法
面１Ｂ及び底盤部１Ｃに固定することにより、不透水な
表面遮水工が施工されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional structure of a landfill disposal site for wastes constructed by the method for constructing a water blocking sheet on a wall surface according to the present invention. The landfill site 1 for this waste is
From the top end portion 1A to the slope 1B serving as a wall surface and the bottom plate portion 1C are integrally formed by concrete pouring. A protective mat 2 made of, for example, polyester long-fiber nonwoven fabric or a protective mat 2 made by laminating a resin reinforced net and anti-wool felt is laid on the concrete top end 1A, slope 1B and bottom plate 1C. At the same time, on the surface of the protective mat 2, a material having a small linear expansion coefficient and capable of being heat-sealed, for example, an olefin-based thermoplastic elastomer, a high-density polyethylene resin in which carbon black is uniformly dispersed, a polyester base cloth The water-impervious sheet 3 made of rubber or the like in a sheet shape with the
By immobilizing the water impervious sheet 3 and the protective mat 2 on the top end portion 1A, the slope 1B and the bottom plate portion 1C, impermeable surface impermeable work is performed.
【００１４】上記のような不透水な表面遮水工の具体的
な施工方法について以下、詳細に説明する。まず、図２
に示すように、天端部１Ａ上に当てがった保護マット２
の上端部分２ａに後述する円形の金属プレート４を当接
させ、この金属プレート４をその中心部に形成されたア
ンカー打込用貫通孔４ａ（図６参照）を通じてエア式釘
打機を用いて天端部１Ａ内に打ち込まれたピン形アンカ
ー５Ａにより固定することにより保護マット２の上端部
分２ａを金属プレート４を介して天端部１Ａに押圧固定
した後、保護マット２の下端部側を図示省略する高所作
業車によって法面１Ｂに添わせる状態で底盤部１Ｃにま
で下降させて敷設する。同様な工程を繰り返して所要枚
数の保護マット２をそれらの端部同士が互いに重なり合
うように敷設した後、隣接する保護マット２，２の互い
に重なり合った端部同士を、ミシン掛け、あるいは、熱
風溶接機やトーチにより熱融着させて互いに接合する。A concrete construction method of the above-mentioned water impermeable surface impermeable construction will be described in detail below. First, FIG.
As shown in, the protective mat 2 applied on the top end 1A.
A circular metal plate 4 which will be described later is brought into contact with the upper end portion 2a of the above, and the metal plate 4 is passed through an anchor driving through hole 4a (see FIG. 6) formed in the center of the metal plate 4 by using an air nailer. After fixing the upper end portion 2a of the protective mat 2 to the upper end portion 1A through the metal plate 4 by fixing with the pin-shaped anchor 5A driven into the upper end portion 1A, the lower end portion side of the protective mat 2 is fixed. An aerial work vehicle (not shown) descends to the bottom plate 1C and lays it along the slope 1B. After repeating the same steps to lay the required number of protective mats 2 so that their ends overlap each other, the overlapping ends of adjacent protective mats 2 and 2 are sewn together or hot-air welded. Machines and torches are used for heat fusion to bond them together.
【００１５】上記保護マット２，２の端部同士の接合作
業に並行して、保護マット２の表面上から遮水シート３
を該保護マット２の天端部分に当てがい、この遮水シー
ト３の上端部分３ａの中央位置を、エア式釘打機を用い
たピン形アンカー５Ｂの打ち込みにより天端部１Ａに固
定される金属プレート４を介して天端部１Ａに仮固定す
る。In parallel with the work of joining the end portions of the protective mats 2, 2 to each other, from the surface of the protective mat 2 to the water blocking sheet 3 is performed.
Is applied to the top end portion of the protective mat 2, and the central position of the upper end portion 3a of the water-impervious sheet 3 is fixed to the top end portion 1A by driving a pin-shaped anchor 5B using an air nailer. It is temporarily fixed to the top end 1A via the metal plate 4.
【００１６】上記仮固定が完了した後、遮水シート３の
下端部側を図示省略する高所作業車によって法面１Ｂに
添わせ、かつ、保護マット２の表面上に重ねられる状態
で底盤部１Ｃにまで下降させて図３に示すように敷設す
る。同様な工程を繰り返して所要枚数の遮水シート３を
図４に示すように、それらの端部同士が互いに重なり合
うように敷設した後、隣接する遮水シート３，３の互い
に重なり合った端部同士は、周知の自走式熱融着機を用
いて、所定の温度、圧力、速度で接合する。この接合
は、敷設後に圧入検査が行えるようにするために、図５
に明示するように、重合部の両側部分を熱融着３Ａ，３
Ａし、中央部には検査用エアの注入用チャンネル（空
洞）３Ｂを形成する状態に接合される。なお、ここで
は、遮水シート３の上端部分３ａを天端部１Ａに金属プ
レート４を介して仮固定した後に、遮水シート３の下端
部側を底盤部１Ｃまで下降させる作業要領で説明した
が、これに代えて、天端部１Ａ側に十分に広い作業スペ
ースが確保できる場合は、遮水シート３を底盤部１Ｃ側
から天端部１Ａ側に引き上げて仮固定する作業要領を採
ってもよい。After the temporary fixing is completed, the bottom end portion of the water-impervious sheet 3 is put on the slope 1B by an aerial work vehicle (not shown) and is overlaid on the surface of the protective mat 2 in the bottom plate portion. It is lowered to 1C and laid as shown in FIG. The same steps are repeated to lay a required number of water-impervious sheets 3 so that their ends overlap each other, and then the adjacent ends of the water-impermeable sheets 3, 3 are overlapped with each other, as shown in FIG. Is bonded at a predetermined temperature, pressure and speed using a known self-propelled heat fusion machine. This connection is shown in FIG. 5 so that a press-fit inspection can be performed after installation.
As will be clearly shown in FIG.
A, and it is joined to the central portion in a state where an inspection air injection channel (cavity) 3B is formed. In addition, here, after the upper end portion 3a of the water shield sheet 3 is temporarily fixed to the top end portion 1A via the metal plate 4, the lower end portion side of the water shield sheet 3 is lowered to the bottom plate portion 1C. However, instead of this, when a sufficiently large working space can be secured on the side of the top end portion 1A, a work procedure of temporarily pulling up the water-impervious sheet 3 from the side of the bottom plate portion 1C to the side of the top end portion 1A is adopted. Good.
【００１７】次に、敷設後の遮水シート３のうち、法面
１Ｂに対応するシート部分３ｂの表面の複数箇所に金属
プレート４を当接させ、これら金属プレート４の中央部
の貫通孔４ａを通じてエア式釘打機を用いてピン形アン
カー５Ｃを法面１Ｂに打ち込んで金属プレート４を固定
することにより、遮水シート３の法面対応部分３ｂ及び
その下層の保護マット２を法面１Ｂに押圧し固定する。
この金属プレート４による固定ピッチは、遮水シート３
の材質、厚さ、法面１Ｂの高さによって異なるが、一般
的には１〜８ｍピッチに設定することで、遮水シート３
の弛み皺の発生を抑制することが可能である。Next, the metal plate 4 is brought into contact with a plurality of positions on the surface of the sheet portion 3b corresponding to the slope 1B of the water-impermeable sheet 3 after being laid, and the through hole 4a in the central portion of the metal plate 4 is abutted. The pin-shaped anchor 5C is driven into the slope 1B using an air nailing machine to fix the metal plate 4, so that the slope-corresponding portion 3b of the water-impervious sheet 3 and the protective mat 2 therebelow are sloped 1B. Press to fix.
The fixed pitch of the metal plate 4 is
It depends on the material, thickness, and height of the slope 1B, but in general, by setting the pitch to 1 to 8 m, the water blocking sheet 3
It is possible to suppress the occurrence of slack wrinkles.
【００１８】以上のような保護マット２及び遮水シート
３の敷設固定作業が終了した時点で金属プレート４の表
面を、遮水性を有しかつ遮水シート３に対して熱融着可
能な材料、例えば遮水シート３と同一のオレフィン系熱
可塑性エラストマーや、カーボンブラックを均一に分散
させた高密度ポリエチレン樹脂、ポリエステル基布を芯
材としてゴム等からなり、金属プレート４よりも少し大
径の円形に作製されたパッチシート６で被覆させるとと
もに、その外周辺部を遮水シート３に熱融着させて固定
部分の水密性を確保する。しかる後、パッチシート６に
対するバキュームテストあるいは図３に示すようなアン
テナ式スパークテスター７を用いてスパークトを実施す
ることにより固定部分の水密性の確認を行う。When the work for laying and fixing the protective mat 2 and the water-blocking sheet 3 as described above is completed, the surface of the metal plate 4 is water-blocking and can be heat-sealed to the water-blocking sheet 3. For example, the same olefinic thermoplastic elastomer as the water-blocking sheet 3, a high-density polyethylene resin in which carbon black is uniformly dispersed, a polyester base cloth made of rubber or the like, and having a diameter slightly larger than that of the metal plate 4. The patch sheet 6 formed in a circular shape is covered with the patch sheet 6, and the outer peripheral portion of the patch sheet 6 is heat-sealed to the impermeable sheet 3 to ensure the water tightness of the fixed portion. Thereafter, a vacuum test is performed on the patch sheet 6 or sparking is performed using the antenna type spark tester 7 as shown in FIG. 3 to check the watertightness of the fixed portion.
【００１９】最後に、金属プレート４により仮固定され
た遮水シート３の上端部分３ａよりも更に上端部側をフ
ラットバー８及びエア式釘打機を介して打ち込まれるピ
ン形アンカ−５Ｄにより天端部１Ａに固定し、さらに、
その固定部よりはみ出した余剰シート部分３ｃをフラッ
トバー８及び金属プレート４の上面を覆うように折り返
し、その折り返し用折曲部と天端部１Ｂとの角部に必要
に応じてシーリング材９を打設することにより、遮水シ
ート３の端部と天端部１Ａとの間の水密性を確実なもの
とする。Finally, a pin-shaped anchor 5D that is driven through the flat bar 8 and the air nailer on the upper end side further than the upper end portion 3a of the water-impervious sheet 3 temporarily fixed by the metal plate 4 is placed in the ceiling. Fixed to the end 1A,
The surplus sheet portion 3c protruding from the fixed portion is folded back so as to cover the flat bar 8 and the upper surface of the metal plate 4, and a sealing material 9 is provided at the corner between the folding portion for folding and the top end portion 1B. By driving, the watertightness between the end of the water blocking sheet 3 and the top end 1A is ensured.
【００２０】図６は、遮水シート３及び保護マット２を
押圧し固定するために用いられる金属プレート４の構造
を示し、円形で同心円状の複数の補強リブ４ｃを有し、
その中央部にピン形アンカーの打込用貫通孔４ａが形成
されているとともに、この貫通孔４ａの周辺部には、ア
ンカーの打ち込みに伴って遮水シート３及び保護マット
２に食い込む複数のスパイク状突起４ｂがプレート４部
分の裏面側への打ち出しにより一体に形成されている。FIG. 6 shows the structure of the metal plate 4 used for pressing and fixing the water-blocking sheet 3 and the protective mat 2, which has a plurality of circular and concentric reinforcing ribs 4c.
A pin-shaped anchor driving through hole 4a is formed in the center thereof, and a plurality of spikes that bite into the water-blocking sheet 3 and the protective mat 2 along with the anchor driving are formed around the through hole 4a. The protrusions 4b are integrally formed by punching the plate 4 portion to the back surface side.
【００２１】このような金属プレート４を使用すること
により、中央の貫通孔４ａにピン形アンカー５Ａ〜５Ｄ
を打ち込んだとき、複数のスパイク状突起４ｂが遮水シ
ート３を貫通して保護マット２に食い込むことになり、
これによって、広い面積で遮水シート３及び保護マット
２を法面１Ｂに押圧固定できるとともに、遮水シート３
を保護マット２に対しても強固に固定させることが可能
で、遮水シート３に弛み皺が発生することを一層軽減で
きる。By using such a metal plate 4, the pin-shaped anchors 5A to 5D are provided in the central through hole 4a.
When spiked in, the plurality of spike-like projections 4b penetrate the water-blocking sheet 3 and bite into the protective mat 2,
As a result, the water blocking sheet 3 and the protective mat 2 can be pressed and fixed to the slope 1B over a wide area, and the water blocking sheet 3
Can be firmly fixed to the protective mat 2, and the occurrence of slack wrinkles on the water-blocking sheet 3 can be further reduced.
【００２２】なお、上記実施の形態では、廃棄物の埋立
て処分場における表面遮水工に適用したもので説明した
が、農業用貯水池等の表面遮水工に適用してもよいこと
もちろんである。In the above embodiment, the description has been given to the case of applying the surface impervious work at the landfill disposal site of the waste, but it may be applied to the surface impermeable work such as an agricultural reservoir. is there.
【００２３】[0023]
【発明の効果】以上のように、本発明によれば、敷設後
の遮水シートを壁面に固定する手段として、エア式釘打
機を用いたアンカーの打ち込みにより壁面に固定される
金属プレートで壁面に押圧し固定するといった機械化作
業を導入したことにより、従来の押えバー工法、接着工
法あるいはコンクリート打設一体工法に比べて、固定作
業が容易かつ簡単であり、全体施工能率の著しい向上及
び施工費用の削減を図ることができるとともに、固定時
に遮水シートや保護マットを部分破損するなどの品質低
下もなく、かつ、固定後の弛み皺の発生を抑制すること
が可能で、施工から長期間経過後においても遮水シート
及び保護マットの破損に伴う不透水性能の低下や外観低
下などの不良事態の発生を確実に防止でき、したがっ
て、不透水性能の維持管理を適正かつ容易に行うことが
できる。しかも、施工用足場等の設置や施工対象である
壁面が平坦かつ平滑でなければならないという施工上の
制約条件が一切ないために、廃棄物の埋立て処分場のよ
うな大規模面積の壁面に対しても有効に適用することが
できるという効果を奏する。As described above, according to the present invention, as a means for fixing the impermeable sheet after laying it to the wall surface, a metal plate fixed to the wall surface by driving an anchor using an air nailer is used. By introducing mechanized work such as pressing and fixing to the wall surface, the fixing work is easier and easier than the conventional holding bar construction method, bonding construction method or concrete placing integrated construction method, and the overall construction efficiency is significantly improved and construction is performed. The cost can be reduced, the water-impermeable sheet and the protective mat are not partially damaged when fixed, and the occurrence of loose wrinkles after fixing can be suppressed for a long period of time after construction. Even after a certain period of time, it is possible to reliably prevent the occurrence of a defective situation such as a decrease in water impermeability and a deterioration in appearance due to damage to the water-impervious sheet and the protective mat. Can be performed manage properly and easily. Moreover, because there are no construction constraints such as the installation of scaffolds for construction and the walls to be constructed must be flat and smooth, it can be used on large-scale wall surfaces such as landfill sites for waste. There is an effect that it can be effectively applied.
【００２４】特に、請求項２に記載のような材料の遮水
シートを使用することで、熱膨張や自重による弛み皺の
発生を一層軽減できるとともに、隣接する遮水シートの
端部同士の接合作業を、従来から使用されている自走式
熱融着機を用いて能率よく行うことができる。Particularly, by using the water blocking sheet made of the material as claimed in claim 2, the occurrence of slack wrinkles due to thermal expansion and self-weight can be further reduced, and the ends of the adjacent water blocking sheets can be joined together. The work can be efficiently performed using a self-propelled heat fusion machine which has been conventionally used.
【００２５】また、請求項３に記載のような金属プレー
トを使用することで、遮水シートを保護マットに対して
強固に固定させることが可能となり、遮水シートの弛み
皺の発生を一層軽減できる。Further, by using the metal plate according to the third aspect, it becomes possible to firmly fix the water impervious sheet to the protective mat and further reduce the occurrence of slack wrinkles of the water impervious sheet. it can.
【００２６】さらに、請求項４に記載のようなパッチシ
ートで金属プレートの表面を被覆することによって、固
定部分の水密性、ひいたは、遮水工全体の遮水性能を確
保できるだけでなく、パッチシートに対するバキューム
テストあるいはアンテナ式スパークテストを実施して固
定部分の水密性を容易に確認し、表面遮水工の品質を保
証することができる。Further, by coating the surface of the metal plate with the patch sheet as described in claim 4, not only the watertightness of the fixed portion and the water-impervious performance of the entire water-impervious construction can be secured, but also A vacuum test or an antenna spark test on the patch sheet can be performed to easily check the watertightness of the fixed part and guarantee the quality of the surface impermeable structure.
【図１】本発明に係る壁面への遮水シート施工方法によ
り施工された廃棄物の埋立て処分場の縦断面構造図であ
る。FIG. 1 is a vertical cross-sectional structural diagram of a landfill disposal site for waste constructed by a method of constructing a water-blocking sheet on a wall surface according to the present invention.
【図２】本発明に係る施工方法のうち、保護マット及び
遮水シートの天端部への固定方法を説明する要部の拡大
縦断面図である。FIG. 2 is an enlarged vertical cross-sectional view of a main part for explaining a method of fixing the protective mat and the water-blocking sheet to the top end of the construction method according to the present invention.
【図３】本発明に係る施工方法のうち、保護マット及び
遮水シートの法面（壁面）への固定方法を説明する要部
の拡大縦断面図である。FIG. 3 is an enlarged vertical cross-sectional view of a main part for explaining a method of fixing the protective mat and the water-blocking sheet to the slope (wall surface) of the construction method according to the present invention.
【図４】図３の正面図である。FIG. 4 is a front view of FIG.
【図５】隣接する遮水シートの端部同士の熱融着接合部
の縦断面図である。FIG. 5 is a vertical cross-sectional view of a heat fusion-bonded joint between end portions of adjacent water-impervious sheets.
【図６】本発明に係る施工方法において使用される金属
プレートの一部破断斜視図である。FIG. 6 is a partially cutaway perspective view of a metal plate used in a construction method according to the present invention.
１Ａ 天端部（コンクリート製壁面の一つ） １Ｂ 法面（コンクリート製壁面の一つ） １Ｃ 底盤部（コンクリート製壁面の一つ） ２ 保護マット ３ 遮水シート ４ 金属プレート ４ａ アンカー打込用貫通孔 ４ｂ スパイク状突起 ５Ａ〜５Ｄ ピン形アンカー ６ パッチシート 1A Top part (one of concrete wall surfaces) 1B slope (one of concrete walls) 1C Bottom part (one of concrete wall surfaces) 2 protection mat 3 impermeable sheet 4 metal plates 4a Anchor driving through hole 4b Spike-shaped protrusion 5A-5D Pin type anchor 6 patch sheets
───────────────────────────────────────────────────── フロントページの続き (72)発明者 本田 泰丈 大阪府大阪市西区江戸堀１丁目17番18号 東洋ゴム工業株式会社内 Ｆターム(参考） 4D004 AA46 BB05 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yasutake Honda 1-17-18 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Toyo Tire & Rubber Co., Ltd. F-term (reference) 4D004 AA46 BB05
Claims (4)
設した後、この保護マットの表面上に遮水シートを重ね
て敷設し、この遮水シート及び保護マットを壁面に固定
することで不透水な表面遮水工を施工する壁面への遮水
シート施工方法であって、 敷設後の遮水シート表面の複数箇所に、アンカー打込用
貫通孔を有する金属プレートを当接させた状態で、この
金属プレートの貫通孔を通じてエア式の釘打機を用いて
アンカーを打ち込んで金属プレートを壁面に固定するこ
とにより遮水シート及び保護マットを金属プレートによ
り壁面に押圧し固定することを特徴とする壁面への遮水
シート施工方法。1. A waterproof mat is laid by laying a protective mat on a concrete wall, laying a waterproof sheet on the surface of the protective mat, and fixing the waterproof sheet and the protective mat on the wall. A method of applying a water-impervious sheet to a wall for performing surface impermeable work, in which a metal plate having anchor-piercing through-holes is in contact with multiple locations on the surface of the impermeable sheet after installation. A wall surface characterized by pressing an anchor with an air nailer through a through hole of the metal plate and fixing the metal plate to the wall surface so that the water blocking sheet and the protective mat are pressed and fixed to the wall surface by the metal plate. To install a water-blocking sheet on the floor.
さく、かつ、熱融着可能な材料から構成されたものを使
用する請求項１に記載の壁面への遮水シート施工方法。2. The method for applying a water-permeable sheet to a wall according to claim 1, wherein the water-impermeable sheet is made of a material having a small linear expansion coefficient and heat-sealing property.
打込用貫通孔の周辺部にアンカーの打ち込みに伴い遮水
シート及び保護マットに食い込む複数のスパイク状突起
が設けられているものを使用する請求項１または２に記
載の壁面への遮水シート施工方法。3. The metal plate having a plurality of spike-shaped projections that bite into the water-blocking sheet and the protective mat when the anchor is driven is provided around the anchor driving through-hole. The method for constructing a water blocking sheet on a wall surface according to 1 or 2.
性を有しかつ遮水シートに対して熱融着可能な材料から
なるパッチシートで被覆する請求項１ないし３のいずれ
かに記載の壁面への遮水シート施工方法。4. The patch sheet according to claim 1, wherein the surface of the fixed metal plate is covered with a patch sheet made of a material having a water-blocking property and capable of being heat-sealed to the water-blocking sheet. How to apply a water barrier sheet to the wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001359272A JP3971917B2 (en) | 2001-11-26 | 2001-11-26 | Method for confirming water tightness of impermeable sheet used for surface impermeable work on wall surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001359272A JP3971917B2 (en) | 2001-11-26 | 2001-11-26 | Method for confirming water tightness of impermeable sheet used for surface impermeable work on wall surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003154328A true JP2003154328A (en) | 2003-05-27 |
| JP3971917B2 JP3971917B2 (en) | 2007-09-05 |
Family
ID=19170312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001359272A Expired - Fee Related JP3971917B2 (en) | 2001-11-26 | 2001-11-26 | Method for confirming water tightness of impermeable sheet used for surface impermeable work on wall surface |
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| JP (1) | JP3971917B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005066550A (en) * | 2003-08-27 | 2005-03-17 | Mitsuboshi Belting Ltd | Water-blocking-sheet fixing structure on wall surface and fixing method of the sheet on wall surface |
| JP2011104544A (en) * | 2009-11-19 | 2011-06-02 | Kfc Ltd | Water barrier structure of waste disposal site and execution method thereof |
| JP2012228633A (en) * | 2011-04-25 | 2012-11-22 | Showa Concrete Ind Co Ltd | Waste disposal facility, and method for constructing the same |
| JP2015508135A (en) * | 2012-02-21 | 2015-03-16 | テール アルメ アンテルナシオナル | Wall elements for reinforced soil structure |
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| JP2001232321A (en) * | 2000-02-22 | 2001-08-28 | Bridgestone Corp | Fixing structure of protective mat on waterproof sheet |
| JP2001295425A (en) * | 2000-04-14 | 2001-10-26 | Dyflex Corp | Waterproof sheet, joining structure for waterproof sheet, and waterproofing method |
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| JPH0742497A (en) * | 1993-07-30 | 1995-02-10 | Kanko Eng Kk | Fitting method of impervious sheet and fitting members thereof |
| JPH08290369A (en) * | 1995-04-19 | 1996-11-05 | Fasco Spa | Releasing device with safety device of compressed air-type box nailing machine |
| JPH1162122A (en) * | 1997-08-08 | 1999-03-05 | Eiji Yamada | Waterproof construction body and execution method thereof |
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| JP2001212538A (en) * | 2000-02-02 | 2001-08-07 | Toyo Constr Co Ltd | Water barrier sheet laying structure and method for laying water barrier sheet |
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| JP2001295425A (en) * | 2000-04-14 | 2001-10-26 | Dyflex Corp | Waterproof sheet, joining structure for waterproof sheet, and waterproofing method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005066550A (en) * | 2003-08-27 | 2005-03-17 | Mitsuboshi Belting Ltd | Water-blocking-sheet fixing structure on wall surface and fixing method of the sheet on wall surface |
| JP2011104544A (en) * | 2009-11-19 | 2011-06-02 | Kfc Ltd | Water barrier structure of waste disposal site and execution method thereof |
| JP2012228633A (en) * | 2011-04-25 | 2012-11-22 | Showa Concrete Ind Co Ltd | Waste disposal facility, and method for constructing the same |
| JP2015508135A (en) * | 2012-02-21 | 2015-03-16 | テール アルメ アンテルナシオナル | Wall elements for reinforced soil structure |
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| JP3971917B2 (en) | 2007-09-05 |
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