JPH07127038A - Water barrier sheet laying method - Google Patents
Water barrier sheet laying methodInfo
- Publication number
- JPH07127038A JPH07127038A JP5299029A JP29902993A JPH07127038A JP H07127038 A JPH07127038 A JP H07127038A JP 5299029 A JP5299029 A JP 5299029A JP 29902993 A JP29902993 A JP 29902993A JP H07127038 A JPH07127038 A JP H07127038A
- Authority
- JP
- Japan
- Prior art keywords
- water
- air
- sheet
- float
- floats
- 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.)
- Pending
Links
Landscapes
- Revetment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は港湾、海岸、河川、湖沼
その他に設けられた埋立地や産業廃棄物処理場における
護岸の法面ならびに水底に亙って遮水シートを敷設する
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for laying an impermeable sheet over a slope of a seawall and a slope of a revetment at a landfill site or an industrial waste disposal site provided in a harbor, coast, river, lake or marsh. Is.
【０００２】[0002]
【従来の技術】従来、海域、水域の一部を護岸で囲み、
その内側に土砂を埋立て、或いは産業廃棄物などの投入
場所として使用することが行なわれている。2. Description of the Related Art Conventionally, a part of the sea area and water area is surrounded by a seawall,
It is carried out to bury the earth and sand inside or use it as a place to put industrial waste.
【０００３】このような埋立地では、投入した土砂や廃
棄物などに含まれている有害成分が水溶して護岸や水底
を透過して周囲の海域、水域へ流出する心配があり、環
境汚染を生じるため好ましくない。[0003] In such a landfill, there is a concern that harmful components contained in the input soil, waste, etc. may be dissolved in water and may permeate the revetment and the bottom of the water to flow out to the surrounding sea area and water area, thus causing environmental pollution. It is not preferable because it occurs.
【０００４】そこで、有害成分の周囲への流出を防ぐた
めに護岸の法面ならびに水底に亙って遮水シートを敷設
することが行なわれている。Therefore, in order to prevent outflow of harmful components to the surroundings, it is practiced to lay a water-blocking sheet on the slope of the seawall and the water bottom.
【０００５】ところが、一般に埋立地は広大であり、殊
に溜水地においては護岸の法面ならびに水底に亙って遮
水シートを敷設することはきわめて困難である。However, in general, landfills are vast, and it is extremely difficult to lay a water-blocking sheet on the slope of the revetment and the bottom of the water, especially in a reservoir.
【０００６】そこで、例えば浮力を付与した複数枚の遮
水シート片を埋立地における水面の所定位置に浮かべ
て、それらの側端縁において互いに接合して幅広な遮水
シートを形成し、次いで、浮力を除去し、遮水シートを
沈降させて水底ならびに護岸の法面に敷設する方法が、
例えば特開平３−２９３４１６号公報などに提示されて
いる。Therefore, for example, a plurality of water-impermeable sheet pieces to which buoyancy has been imparted are floated at predetermined positions on the water surface in a landfill, and their side edges are joined to each other to form a wide water-impermeable sheet. The method of removing the buoyancy, setting the impermeable sheet and laying it on the water bottom and the slope of the revetment,
For example, it is presented in Japanese Patent Laid-Open No. 3-293416.
【０００７】この従来知られている遮水シートの敷設方
法は、遮水シートに空気浮子による粱を設け、これらの
空気粱に空気を充填した状態で水面に引出して拡げ、次
いで空気粱内の空気を抜いて水底に沈降、敷設させるも
のである。In this conventionally known method of laying a water-impermeable sheet, a water-impermeable sheet is provided with a float by means of an air float, and the air-flood is pulled out to the surface of the water while being filled with air, and then expanded. The air is evacuated and settled and laid on the bottom of the water.
【０００８】従って、例えば特公平１−４０１７０号公
報に提示されている遮水シートの敷設方法のように、遮
水シートを沈降させる際に浮子を取り外す作業が不要で
あるため敷設作業が容易である、という利点を有してい
る。Therefore, unlike the method of laying a water-blocking sheet disclosed in Japanese Patent Publication No. 1-40170, it is not necessary to remove the float when the water-blocking sheet is settled, so that the laying work is easy. There is an advantage.
【０００９】しかしながら、遮水シートを水面に浮かす
ためには大きな浮力が必要であり、特開平３−２９３４
１６号公報に提示されている遮水シートの敷設方法によ
れば、遮水シートの表面に多量の空気粱を設けなければ
ならず、遮水シートの保管ならびに搬送を含めて取扱い
がきわめて困難である、という問題がある。However, a large buoyancy is required to float the water-impervious sheet on the water surface.
According to the method of laying the water-blocking sheet disclosed in Japanese Patent No. 16, it is necessary to provide a large amount of air slag on the surface of the water-blocking sheet, which is extremely difficult to handle including storage and transportation of the water-blocking sheet. There is a problem.
【００１０】また、空気粱にピンホールや破損箇所があ
ると水面に拡げた際に、それらの部分が沈降して確実な
敷設作業をすることができず、更に、敷設後に遮水シー
トが浮き上がってしまうことがあり、殊に空気粱内に空
気が残っている場合には著しい、という問題もある。Further, if there is a pinhole or a damaged portion in the air trap, when it spreads to the surface of the water, those portions sink and the laying work cannot be performed reliably, and furthermore, the waterproof sheet floats after the laying. There is also a problem that it is remarkable, especially when air remains in the air trap.
【００１１】[0011]
【発明が解決しようとする課題】発明が解決しようとす
る第一の課題は、従来知られている空気浮子を用いた遮
水シートの敷設方法によれば、遮水シートの保管ならび
に搬送を含めて取扱いがきわめて困難であり、また、空
気浮子にピンホールや破損箇所があると水面に拡げた際
に、それらの部分が沈降して確実な敷設作業をすること
ができない、という点であり、発明が解決しようとする
第二の課題は、敷設後に遮水シートが浮き上がってしま
うことがある、という点である。The first problem to be solved by the present invention is, according to the conventionally known method of laying a waterproof sheet using an air float, including storage and transportation of the waterproof sheet. It is extremely difficult to handle, and if there are pinholes or damaged points on the air float, when they expand to the water surface, those parts will sink and it will not be possible to perform reliable laying work. The second problem to be solved by the invention is that the impermeable sheet sometimes floats up after installation.
【００１２】[0012]
【課題を解決するための手段】前記第一の課題を解決す
るためになされた第一発明は、複数枚の遮水シート片を
互いに接合するとともにそれらの表面にシート材により
形成された複数個の空気浮子と、複数個の浮力除去が不
可能な浮子とを適宜の間隔で取付けて形成した広幅の遮
水シートを水面に繰出して浮かべた後、前記空気浮子内
の空気を除去するとともに前記浮子を離脱させて遮水シ
ートを沈降させ水底などに敷設することを特徴とし、遮
水シートの保管ならびに搬送を含めて取扱いがきわめて
容易であるとともに、確実に敷設できる遮水シートの敷
設方法を提供する。The first invention made to solve the above-mentioned first problem is to bond a plurality of water-impervious sheet pieces to each other and to form a plurality of water-permeable sheet pieces on their surfaces by a sheet material. The air float, and a plurality of floats in which buoyancy cannot be removed are attached at appropriate intervals to form a wide water-blocking sheet that is drawn to the water surface and floated, and the air in the air float is removed and The feature is that the floater is detached and the water-impervious sheet is settled down and laid on the bottom of the water, etc. provide.
【００１３】また、前記第二の課題を解決するためにな
された第二発明は、前記第一発明によって水底などに敷
設した遮水シートの空気を除去した空気浮子内に、セメ
ントモルタルスラリーを充填、凝結させることを特徴と
し、前記第一発明と同様に遮水シートの保管ならびに搬
送を含めて取扱いがきわめて容易で、確実に敷設できる
あるばかりか、敷設後に浮き上がる心配がない遮水シー
トの敷設方法を提供する。A second invention made to solve the second problem is to fill a cement mortar slurry into the air float of the water-blocking sheet laid on the water bottom or the like according to the first invention from which air has been removed. As with the first invention, it is extremely easy to handle, including storage and transportation of the water-impervious sheet, and can be reliably laid, as well as laying a water-impermeable sheet that does not float up after laying. Provide a way.
【００１４】[0014]
【作用】遮水シートの表面に、シート材により形成され
た複数個の空気浮子と、複数個の浮力除去が不可能な浮
子とを適宜の間隔で取付けることにより、空気浮子の設
置数の減少を計ることができる。[Function] The number of air buoys installed can be reduced by mounting a plurality of air buoys formed of sheet material and a plurality of buoyancy-impartable buoys at appropriate intervals on the surface of the waterproof sheet. Can be measured.
【００１５】また、浮力除去が不可能な浮子を取り付け
ておくことにより空気浮子の不良箇所に生じる沈降を防
止する。Further, by attaching a float whose buoyancy cannot be removed, settling which occurs in a defective portion of the air float is prevented.
【００１６】更に、沈降の際に取り外し作業の面倒な浮
力除去が不可能な浮子の数を減らして作業の簡略化を計
る。Further, the number of floats which cannot be removed by buoyancy, which is a troublesome work of removing the settling at the time of sinking, is reduced to simplify the work.
【００１７】更にまた、敷設した後、空気を除去した空
気浮子内にセメントモルタルスラリーを充填、凝結させ
ることにより敷設後の遮水シートの浮き上がりを防止す
る。Furthermore, after laying, the air buoyant from which air has been removed is filled with cement mortar slurry and condensed to prevent the water impermeable sheet from floating after laying.
【００１８】[0018]
【実施例】次に本発明の実施例を図面を参照して説明す
る。Embodiments of the present invention will now be described with reference to the drawings.
【００１９】図１乃至図４は第一発明の一実施例を示す
ものであり、不通水性ならびに可撓性を有する、例えば
厚さが１〜１０ｍｍ、幅２〜１０ｍ、長さ５０〜１００
ｍ程度で必要により編組物などからなる補強層を有する
塩化ビニル樹脂シートよりなる長尺の複数枚の遮水シー
ト片１ａ，１ｂ，１ｃの長手方向の側端縁を、例えば埋
立地２の水面２１に浮かべた大型作業台船２２上で互い
に接合して図１に示すようにシートユニット１Ａを形成
する。FIGS. 1 to 4 show an embodiment of the first invention, which has water impermeability and flexibility, for example, a thickness of 1 to 10 mm, a width of 2 to 10 m, and a length of 50 to 100.
The lengthwise side edges of a plurality of long water-blocking sheet pieces 1a, 1b, 1c made of a vinyl chloride resin sheet having a reinforcing layer made of a braid, etc., if necessary, for example, about the water surface of the landfill 2 The large work table 22 floated on 21 is joined to each other to form a seat unit 1A as shown in FIG.
【００２０】各遮水シート片１ａ，１ｂ，１ｃの表面に
は複数個の空気浮子３と、複数個の浮力除去が不可能な
浮子４とが適宜の間隔で取付けられている。A plurality of air floats 3 and a plurality of floats 4 whose buoyancy cannot be removed are mounted at appropriate intervals on the surface of each water-blocking sheet piece 1a, 1b, 1c.
【００２１】前記空気浮子３は図２に示すように、例え
ば各遮水シート片１ａ，１ｂ，１ｃと同様のシート素材
により形成され、長尺の中空筒状体の浮子本体３１の下
端に垂設した長尺矩形状の取付片３２の下端縁において
遮水シート片１ａ，１ｂ，１ｃに溶着されており、浮子
本体３１に空気の給排口３３が設けられている。As shown in FIG. 2, the air float 3 is made of the same sheet material as the water-impervious sheet pieces 1a, 1b, 1c, for example, and is suspended from the lower end of the float main body 31 of a long hollow cylindrical body. The long rectangular mounting piece 32 is welded to the water blocking sheet pieces 1a, 1b, 1c at the lower edge thereof, and the float body 31 is provided with an air supply / discharge port 33.
【００２２】また、前記浮子４は図３に示すように、木
材や例えば硬質発泡ポリスチロール樹脂材などのように
自身が大きな浮力を有する軽量な材質により中実に、或
いは中空に形成され、従来知られている多くのものが適
用されるが、通常の使用状態では浮力が除去されないこ
とが必要とされる。Further, as shown in FIG. 3, the float 4 is solid or hollow and is made of a lightweight material such as wood or hard foamed polystyrene resin material having a large buoyancy. Many of the above are applicable but require that buoyancy is not removed under normal use.
【００２３】浮子４は紐状の係止具４１を介して各遮水
シート片１ａ，１ｂ，１ｃに溶着固定された係止具１１
に取り外し可能に繋着されている。The floating member 4 is secured to the water shielding sheet pieces 1a, 1b, 1c through a string-shaped locking member 41, and the locking member 11 is welded and fixed.
It is detachably attached to the.
【００２４】そして、前記大型作業台船２２上で形成し
たシートユニット１Ａを例えば対岸に設置した巻取装置
によりロープを介して牽引することにより水面２１に繰
出して浮かべ（図示せず）、同様に形成して水面２１に
繰出して浮かべた他のシートユニット１Ｂ，１Ｃ，１
Ｄ，１Ｅ，１Ｆとを図４に示すようにそれらの接合端部
を小型の水上接合台船２３に引き上げて接合することに
より互いに隣接して浮かぶシートユニット１Ａ，１Ｂ，
…，１Ｆ，…相互間を順次接合して水面２１の全面を覆
う広範な遮水シート１を形成する。Then, the seat unit 1A formed on the large work pontoon 22 is pulled out to the water surface 21 and floated (not shown) by pulling it through a rope by a winding device installed on the opposite shore, for example. Other sheet units 1B, 1C, 1 which are formed and drawn out on the water surface 21 and floated
As shown in FIG. 4, sheet units 1A, 1B, D, 1E, 1F, which float adjacent to each other by pulling up and joining their joining ends to a small water-based joining pedestal 23, are joined.
.., 1F, ... are sequentially joined together to form a wide water blocking sheet 1 covering the entire surface of the water surface 21.
【００２５】次に、遮水シート１の端部を護岸に引上げ
て護岸の頂部或いは下部で固定するとともに、浮子４を
取外し、同時に空気浮子３の給排口３３を開放し、或い
は孔を明けるなどして内部の空気を排出させて遮水シー
ト１に付与されていた浮力を除去して沈降させ、水底な
らびに護岸法面に亙って敷設する。Next, the end of the water-impervious sheet 1 is pulled up to the revetment and fixed at the top or bottom of the revetment, the float 4 is removed, and at the same time the air supply / discharge port 33 of the air float 3 is opened or a hole is formed. For example, the air inside is discharged to remove the buoyancy imparted to the water-blocking sheet 1 and settle it down, and it is laid over the water bottom and the revetment slope.
【００２６】以上の構成を有する本実施例は、遮水シー
ト１を浮力除去可能な空気浮子３と、取り外し可能な浮
子４とで水面に浮かせるものである。In this embodiment having the above-mentioned structure, the impermeable sheet 1 is floated on the water surface by the air float 3 capable of removing buoyancy and the removable float 4.
【００２７】従って、空気浮子３の設置数の減少を計る
ことができ、遮水シート片１ａ，…を巻いた状態で保
管、運搬したとしても嵩張ることがなく取扱いが容易で
ある。Therefore, the number of the air floats 3 installed can be reduced, and even if the water-impermeable sheet pieces 1a, ... Are stored and transported in a wound state, they are not bulky and easy to handle.
【００２８】殊に、空気浮子３の取付け数が少ないため
空気浮子３を敷設現場で取り付けることも可能であり、
この場合には遮水シート片１ａ，…は更に取扱いが容易
となる。In particular, since the number of the air floats 3 to be attached is small, it is possible to attach the air floats 3 at the laying site.
In this case, the water blocking sheet pieces 1a, ... Are even easier to handle.
【００２９】また、たとえ空気浮子３にピンホールや破
損箇所が生じていてもそれらの箇所で遮水シートが部分
的に沈降して正確な敷設ができない、という心配もな
い。Even if the air float 3 has pinholes or damaged portions, there is no concern that the water-impervious sheet will partially settle at those points and accurate installation cannot be performed.
【００３０】更に、水面に浮かせた遮水シートを沈降さ
せる際に空気浮子３は孔を明けるなど簡単な作業で済
み、取り外し作業の必要な浮子４はその数が少ないため
作業の簡略化を計ることができる。Further, when the water-impervious sheet floating on the water surface is settled, simple work such as making holes in the air float 3 is required, and the number of floats 4 that need to be removed is small, so the work is simplified. be able to.
【００３１】更にまた、本実施例は浮子４が紐状の係止
具４１を介して各遮水シート片１ａ，１ｂ，１ｃに溶着
固定された係止具１１に取り外し可能に繋着されてい
る。従って、これらの浮子４を水面に浮かべたシートユ
ニット１Ａ，…の繰出し、或いは移動用の繋ぎ手とし
て、またはシートユニット１Ａ，…の端部を接合台船に
引上げる際の取手などととしても利用することができる
ものである。Furthermore, in this embodiment, the float 4 is detachably attached to the locking tool 11 which is welded and fixed to each of the water-blocking sheet pieces 1a, 1b, 1c through the string-shaped locking tool 41. There is. Therefore, the floats 4 may be used as a connection for feeding or moving the seat units 1A, ... Floating on the water surface, or as a handle for pulling up the ends of the seat units 1A ,. It can be used.
【００３２】尚、本実施例は水面２１に浮かべた作業台
船２２ならびに水上接合台船２３に遮水シート片１ａ，
…ならびにシートユニット１Ａ，…を引上げて接合作業
を行なう場合を示したが、護岸上で接合して、これを水
面に繰り出す手段を用いてもよいことは言うまでもな
い。In this embodiment, the water-barrier sheet pieces 1a,
... and the case where the sheet units 1A, ... are pulled up to perform the joining work, but it goes without saying that a means for joining on the seawall and feeding this to the water surface may be used.
【００３３】また、図５は第二発明における最終段階の
概要を示すものであり、前記第一発明と同様の手段によ
り遮水シート１を水底５ならびに護岸６の法面６１に亙
って敷設した後、空気を除去した空気浮子３内に開放し
た給排口３３（図２参照）、或いは空気を排出させるた
めに形成した孔を利用してセメントモルタルスラリーを
充填し、凝結させる。Further, FIG. 5 shows an outline of the final stage in the second invention, in which the impermeable sheet 1 is laid over the water bottom 5 and the slope 61 of the seawall 6 by the same means as in the first invention. After that, the cement mortar slurry is filled and condensed using the air supply / discharge port 33 (see FIG. 2) opened in the air float 3 from which air has been removed, or the hole formed to discharge air.
【００３４】セメントモルタルスラリーは例えば護岸６
の頂面６２上に配置されたパドル付き貯蔵槽７に貯蔵し
たものをポンプ８を用いて空気浮子３内に導入充填する
ものであり、殊に、図５に示したように空気浮子３を水
底８部分から護岸５の法面５２上方部分まで連続した形
状とすることにより水中作業を伴うことなしにセメント
モルタルスラリーをきわめて簡単に充填することが可能
であるが、例えば前記第一発明の実施例に示したように
短尺の空気浮子３を多数設けた場合には給排口３３、或
いは空気を排出させるために形成した孔が水中に位置す
ることになり、これらの場合には潜水状態で充填作業を
行なう。The cement mortar slurry is, for example, the revetment 6
Is stored in a paddle-equipped storage tank 7 arranged on the top surface 62 of the above, and is introduced and filled into the air float 3 by using a pump 8. In particular, as shown in FIG. The cement mortar slurry can be extremely easily filled without underwater work by forming a continuous shape from the water bottom 8 part to the upper part of the slope 52 of the revetment 5. For example, the implementation of the first invention described above. As shown in the example, when a large number of short air floats 3 are provided, the supply / discharge port 33 or the hole formed for discharging the air is located in the water. Perform filling work.
【００３５】空気を除去した空気浮子３内にセメントモ
ルタルスラリーを充填、凝結させることによりセメント
モルタルが錘の作用を発揮して敷設後の遮水シートの浮
き上がりを防止することができる。By filling and coagulating the cement mortar slurry in the air float 3 from which air has been removed, the cement mortar can act as a weight to prevent the impermeable sheet from rising after being laid.
【００３６】また、セメントモルタルは錘の作用を発揮
すればよく、特に強度を必要としないのでセメントモル
タルは貧配合のものを用いればよく、経済的にも有利で
ある。Further, the cement mortar only needs to exhibit the function of a weight, and does not require any particular strength, so that a cement mortar of a poor composition may be used, which is economically advantageous.
【００３７】[0037]
【発明の効果】以上の構成を有する第一発明によると、
遮水シートの表面に、シート材により形成された複数個
の空気浮子と、複数個の浮力除去が不可能な浮子とを適
宜の間隔で取付けることにより、空気浮子の設置数の減
少を計ることができので、遮水シートの保管ならびに搬
送を含めて取扱いがきわめて容易である。According to the first invention having the above constitution,
To reduce the number of air buoys installed by installing a plurality of air buoys made of sheet material and a plurality of buoyancy-impartable floats on the surface of the water-blocking sheet at appropriate intervals. Since it is possible to handle, it is extremely easy to handle, including storage and transportation of the water-impervious sheet.
【００３８】また、浮力除去が不可能な浮子を取り付け
ておくことにより空気浮子の不良箇所に生じる沈降を防
止することができ、正確な位置に敷設することがができ
る。Further, by attaching a float whose buoyancy cannot be removed, it is possible to prevent settling that occurs in a defective part of the air float, and it is possible to lay it in an accurate position.
【００３９】更に、水面に浮かせた遮水シートを沈降さ
せる際に空気浮子は孔を明けるなど簡単な作業で済み、
取り外し作業の必要な浮子はその数が少ないため作業の
簡略化を計ることができるものである。Further, when the water-impervious sheet floating on the water surface is settled, a simple work such as making holes in the air float is sufficient.
Since the number of floats that need to be removed is small, the work can be simplified.
【００４０】更にまた、第二発明にあっては、前記第一
発明が有する作用・効果を奏するばかりか、空気浮子内
にセメントモルタルスラリーを充填、凝結させることに
よりセメントモルタルが錘の作用を発揮する。Furthermore, in the second invention, not only the functions and effects of the first invention are exhibited, but also the cement mortar exerts the function of a weight by filling and condensing the cement mortar slurry in the air float. To do.
【００４１】従って、敷設後の遮水シートの浮き上がり
をきわめて簡単に防止することができるものである。Therefore, it is possible to very easily prevent the water impermeable sheet from rising after being laid.
【図１】第一発明を実施するための一例を示す平面部分
図である。FIG. 1 is a partial plan view showing an example for carrying out the first invention.
【図２】図１に示した実施例に使用される空気浮子を示
す一部を切裁した斜視図である。2 is a partially cutaway perspective view showing an air float used in the embodiment shown in FIG. 1. FIG.
【図３】図１に示した実施例に使用される浮子を示す一
部を切裁した斜視図である。3 is a partially cutaway perspective view showing a float used in the embodiment shown in FIG. 1. FIG.
【図４】図１に示した実施例における異なる段階での平
面部分図である。4 is a partial plan view of the embodiment shown in FIG. 1 at different stages.
【図５】第二発明の一実施例における最終段階を示す説
明図である。FIG. 5 is an explanatory diagram showing a final stage in one embodiment of the second invention.
１ 遮水シート １ａ 遮水シート片 １ｂ 遮水シート片 １ｃ 遮水シート片 ３ 空気浮子 ４ 浮子 1 Impermeable sheet 1a Impermeable sheet piece 1b Impermeable sheet piece 1c Impermeable sheet piece 3 Air float 4 Float
Claims (2)
とともにそれらの表面にシート材により形成された複数
個の空気浮子と、複数個の浮力除去が不可能な浮子とを
適宜の間隔で取付けて形成した広幅の遮水シートを水面
に繰出して浮かべた後、前記空気浮子内の空気を除去す
るとともに前記浮子を離脱させて遮水シートを沈降させ
水底などに敷設することを特徴とする遮水シートの敷設
方法。1. A plurality of water-impermeable sheet pieces are joined to each other, and a plurality of air floats formed on the surface of the sheet material with a sheet material, and a plurality of floats whose buoyancy cannot be removed are provided at appropriate intervals. It is characterized in that after mounting and forming a wide impermeable sheet on the surface of the water and floating it, the air in the air float is removed and the float is detached, and the impermeable sheet is settled and laid on the water bottom or the like. Method of laying water barrier sheet.
とともにそれらの表面にシート材により形成された複数
個の空気浮子と、複数個の浮力除去が不可能な浮子とを
適宜の間隔で取付けて形成した広幅の遮水シートを水面
に繰出して浮かべた後、前記空気浮子内の空気を除去す
るとともに前記浮子を離脱させて遮水シートを沈降させ
水底などに敷設し、次に、前記空気を除去した空気浮子
内にセメントモルタルスラリーを充填、凝結させること
を特徴とする遮水シートの敷設方法。2. A plurality of water impermeable sheet pieces are joined to each other, and a plurality of air floats formed of a sheet material on their surfaces and a plurality of floats whose buoyancy cannot be removed are provided at appropriate intervals. After feeding and floating the wide impermeable sheet formed on the water surface, the air in the air float is removed and the float is detached to settle the impermeable sheet to lay on the bottom of the water, etc. A method of laying a water-impervious sheet, characterized by filling a cement mortar slurry into an air float from which air has been removed, and allowing the slurry to set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5299029A JPH07127038A (en) | 1993-11-04 | 1993-11-04 | Water barrier sheet laying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5299029A JPH07127038A (en) | 1993-11-04 | 1993-11-04 | Water barrier sheet laying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07127038A true JPH07127038A (en) | 1995-05-16 |
Family
ID=17867299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5299029A Pending JPH07127038A (en) | 1993-11-04 | 1993-11-04 | Water barrier sheet laying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07127038A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000212929A (en) * | 1999-01-27 | 2000-08-02 | Ohmoto Gumi Co Ltd | Method of containing sludge |
| JP2004097960A (en) * | 2002-09-10 | 2004-04-02 | Yoshin Kensetsu Kk | Water sealing sheet and installation method of the same |
| CN106869077A (en) * | 2017-03-17 | 2017-06-20 | 云南省水利水电勘测设计研究院 | The method that cold region river freezeup period flow is estimated using Channel Group's phase stage discharge relation |
| JP2020157220A (en) * | 2019-03-26 | 2020-10-01 | 鹿島建設株式会社 | Method of laying waterproof sheet |
-
1993
- 1993-11-04 JP JP5299029A patent/JPH07127038A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000212929A (en) * | 1999-01-27 | 2000-08-02 | Ohmoto Gumi Co Ltd | Method of containing sludge |
| JP2004097960A (en) * | 2002-09-10 | 2004-04-02 | Yoshin Kensetsu Kk | Water sealing sheet and installation method of the same |
| CN106869077A (en) * | 2017-03-17 | 2017-06-20 | 云南省水利水电勘测设计研究院 | The method that cold region river freezeup period flow is estimated using Channel Group's phase stage discharge relation |
| CN106869077B (en) * | 2017-03-17 | 2019-02-26 | 云南省水利水电勘测设计研究院 | Utilize the method for Channel Group's phase stage discharge relation estimation cold region river freezeup period flow |
| JP2020157220A (en) * | 2019-03-26 | 2020-10-01 | 鹿島建設株式会社 | Method of laying waterproof sheet |
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