JP2021006686A - Water cut-off sheet shifting method - Google Patents

Water cut-off sheet shifting method Download PDF

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JP2021006686A
JP2021006686A JP2019120842A JP2019120842A JP2021006686A JP 2021006686 A JP2021006686 A JP 2021006686A JP 2019120842 A JP2019120842 A JP 2019120842A JP 2019120842 A JP2019120842 A JP 2019120842A JP 2021006686 A JP2021006686 A JP 2021006686A
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sheet
water
sea
water cut
impermeable sheet
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JP6937798B2 (en
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正基 高橋
Masaki Takahashi
正基 高橋
千明 中尾
Chiaki Nakao
千明 中尾
聖児 内山
Seiji Uchiyama
聖児 内山
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YOSHIN KENSETSU KK
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YOSHIN KENSETSU KK
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Abstract

To provide a water cut-off sheet shifting method that widens a water cut-off sheet on the land and reduces tear and/or rubbing of it due to enforced pulling which occurs when a large size water cut-off sheet thus widened is dragged and shifted on the surface of the sea.SOLUTION: A water cut-off sheet shifting method for shifting a water cut-off sheet (1) widened on the land onto the sea comprises steps of: forming a dragging area by arranging a slope surface (S) having a downward slope to drag out the water cut-off sheet on the surface of the sea; installing a bottom sheet (2) on the slope surface; forming a water film layer (3) with a discharge pipe between the bottom sheet and the water cut-off sheet; and pulling and shifting on the surface of the sea the water cut-off sheet separated with the water film layer using dragging means.SELECTED DRAWING: Figure 3

Description

この発明は、遮水シートの移動工法に関し、特に、遮水シートを広幅加工した大型の遮水シートを、引摺り移動させる際、遮水シートの引き裂きや摩擦による損傷等を低減化させる遮水シートの移動工法に関するものである。 The present invention relates to a method for moving a water-impervious sheet, and in particular, when a large-sized water-impervious sheet obtained by wide-processing the water-impervious sheet is dragged and moved, the water-impervious sheet is torn or damaged due to friction. It is related to the sheet movement method.

従来、遮水シートは、護岸に敷設して降雨や波等による決壊を防止し、或いは廃棄物処分場等の底部に敷設して、石炭灰等廃棄物から流れ出る有害物質が地下に浸透することを防ぐために用いるものである。 Conventionally, the impermeable sheet is laid on the revetment to prevent it from breaking due to rainfall or waves, or it is laid at the bottom of a waste disposal site, etc., and harmful substances flowing out of waste such as coal ash permeate underground. It is used to prevent.

しかし、遮水シート敷設工事の規模が大きくなれば、当然、該遮水シートは巨大な大きさのシートに広幅する必要がある。しかし、遮水シートの原反ロールは、製造規格で幅2.0mであり、そのために施工現場近傍に広幅加工設備を設け、施工現場の規模に適合する幅の大型の遮水シートに加工する必要がある。 However, as the scale of the impermeable sheet laying work increases, it is naturally necessary to widen the impermeable sheet into a sheet having a huge size. However, the original roll of the impermeable sheet has a width of 2.0 m according to the manufacturing standard, and for that purpose, a wide processing facility is installed near the construction site to process it into a large impermeable sheet with a width suitable for the scale of the construction site. There is a need.

大型の遮水シートの広幅加工方法は、複数本の原反ロールを前後二列で千鳥状に並列しておき、これらの各原反ロールから遮水シートを送りだし、隣接する遮水シート端片同士を、融着等の固着手段を用いてして繋ぎ合わせ、施工現場の幅寸法に合うよう広幅加工して、大型の遮水シートに構成するものである。 The wide processing method for large impermeable sheets is to arrange multiple raw fabric rolls in two rows in front and behind in a staggered pattern, send out the impermeable sheet from each of these original fabric rolls, and adjacent pieces of the impermeable sheet. They are joined together using a fixing means such as fusion, and wide-processed to fit the width of the construction site to form a large water-impervious sheet.

そして、遮水シートの広幅加工は、前述のように敷設施工現場に広幅加工設備を設置して行われており、海上施工であれば1500トン級の作業用台船を設け、該台船上で広幅加工し、加工された大型の遮水シートにはブイ等の浮力体を多数取り付け、船上より直に海上へ進水できるよう構成している。例えば、特許文献1のように。 Then, the wide processing of the impermeable sheet is performed by installing the wide processing equipment at the laying construction site as described above, and in the case of marine construction, a 1500 ton class work pontoon is provided and on the pontoon. A large number of buoyant bodies such as buoys are attached to the wide-processed large impermeable sheet so that it can be launched directly onto the sea from the ship. For example, as in Patent Document 1.

特許第6351085号公報Japanese Patent No. 6351085

しかし、施工現場は大抵が海上施工であるが、海岸際での施工条件が合えば、広幅加工設備も台船上に代えて陸上に設ける事もある。そのためには該広幅加工設備は通常なるべく岸壁近くに設けて遮水シートを加工するが、立地条件が合わなければ広幅加工設備の手前には、施工現場で使用する大型の遮水シートの幅寸法を有する引き摺りエリアを必要としている。 However, most of the construction sites are marine construction, but if the construction conditions near the coast are met, wide processing equipment may be installed on land instead of on the pontoon. For that purpose, the wide processing equipment is usually installed as close to the quay as possible to process the impermeable sheet, but if the location conditions are not met, the width of the large impermeable sheet used at the construction site is in front of the wide processing equipment. Need a drag area with.

そして、遮水シートの拡幅加工を終えた大型の遮水シートは、引き摺りエリアから海上に引き摺って移動させるが、強引に引き摺りだすと、遮水シートと地面との接触による摩擦が生じ、遮水シートの素材が超軟質であるため、遮水シートが引き裂かれたり、該シート面が摩擦により傷ついてしまうという問題が生じていた。また、引き摺り延長が長くなる程、遮水シート重量が増し、引き摺り移動は不可能に近い。 Then, the large impermeable sheet that has been widened is dragged from the drag area to the sea and moved, but if it is forcibly pulled out, friction occurs due to the contact between the impermeable sheet and the ground, and the impermeable sheet is impermeable. Since the material of the sheet is ultra-soft, there has been a problem that the impermeable sheet is torn or the sheet surface is damaged by friction. Further, as the drag extension becomes longer, the weight of the impermeable sheet increases, and the drag movement is almost impossible.

そこでこの発明は、陸上において遮水シートを広幅加工し、該広幅加工により形成された大型の遮水シートを海上に引き摺り移動させる際に生ずる強引な牽引による遮水シートの引き裂かれを防止し、摩擦を低減させる遮水シートの移動工法を開発・提供するものである。 Therefore, the present invention prevents the impermeable sheet from being torn by forcible traction that occurs when the impermeable sheet is wide-processed on land and the large impermeable sheet formed by the wide-width processing is dragged and moved over the sea. It develops and provides a method of moving an impermeable sheet that reduces friction.

この発明の遮水シートの移動工法は、陸上で広幅加工された遮水シートを海上に移動させる遮水シートの移動工法であって、該遮水シートを海上へ引き摺り出す際の引き摺りエリアを、下り勾配を有するスロープ面を設けて形成し、該スロープ面上に底部シートを敷設し、前記底部シートの間に、放水により水膜層を形成しておき、該水膜層で遊離した遮水シートを、引き摺り手段を用いて海上に牽引して移動させることを特徴とする。 The method for moving the impermeable sheet of the present invention is a method for moving the impermeable sheet that has been wide-processed on land to the sea, and the dragging area when the impermeable sheet is pulled out to the sea is defined as a method for moving the impermeable sheet. A slope surface having a downward slope is provided and formed, a bottom sheet is laid on the slope surface, a water film layer is formed by discharging water between the bottom sheets, and water shielding released by the water film layer. The seat is towed and moved to the sea by using a dragging means.

さらに、前記底部シートと前記遮水シートの間に、保持ローラと、該保持ローラの前記スロープ面の下り側に隣接した該保持ローラより小径の放水管とを設け、放水により形成された前記水膜層の流れを保持することを特徴とする。 Further, a holding roller and a water discharge pipe having a diameter smaller than that of the holding roller adjacent to the downward side of the slope surface of the holding roller are provided between the bottom sheet and the water-impervious sheet, and the water formed by water discharge. It is characterized by retaining the flow of the membrane layer.

また、前記底部シートを、建屋内の作業ステージの床面にも敷設したことを特徴とする。 Further, the bottom sheet is also laid on the floor surface of the work stage in the building.

この発明によると、スロープ面の遮水シートの下部に底部シートを敷設し、これらシートの間に水膜層を形成し、該水膜層によって遊離する事で遮水シートの摩擦低減化を図り、海上に引き摺って移動することが容易に可能になる。また、遮水シートの引き裂きや摩擦が軽減され、遮水シートの保護が図れる等の効果を有する。 According to the present invention, a bottom sheet is laid under the water-impervious sheet on the slope surface, a water film layer is formed between these sheets, and the water-impervious sheet is released by the water film layer to reduce friction of the water-impervious sheet. , It becomes possible to easily drag and move over the sea. In addition, tearing and friction of the impermeable sheet are reduced, and the impermeable sheet can be protected.

この発明の使用設備の一部の実施例であり、建屋とシートの引出装置を示す一部を切り欠いた説明図である。It is an example of a part of the equipment used of this invention, and it is explanatory drawing which cut out a part which shows the building and the pull-out device of a sheet. この発明の使用設備の他部の実施例であり、引出装置から海上までのスロープ面を示す一部を切り欠いた説明図である。It is an example of the other part of the equipment used of this invention, and is explanatory drawing which cut out a part which shows the slope surface from a drawing device to the sea. この発明に使用する既存の遮水シート(1、1´)の移動工法の一実施例を示し、(A)は、保持ローラと放水管の上部を移動する状態の3層一体の遮水シートの一部を切り欠いた断面図であり、(B)は、図3(A)中a部分の一部を切り欠いた拡大断面図であり、(C)は、保持ローラと放水管の上部を移動する状態の5層一体の遮水シートの一部を切り欠いた断面図であり、(D)は、図3(C)中b部分の一部を切り欠いた拡大断面図である。An embodiment of the moving method of the existing impermeable sheet (1, 1') used in the present invention is shown, and (A) is a three-layer integrated impermeable sheet in a state where the holding roller and the upper part of the water discharge pipe are moved. (B) is an enlarged cross-sectional view in which a part of a part of FIG. 3 (A) is cut out, and (C) is an upper portion of a holding roller and a water discharge pipe. It is a cross-sectional view which cut out a part of the water-impervious sheet integrated with 5 layers in the state of moving, and (D) is the enlarged sectional view which cut out a part of b part in FIG. 3 (C). この発明に使用する広幅遮水シートを海中に引き摺り出した状態の説明図である。It is explanatory drawing of the state which pulled out the wide impermeable sheet used for this invention into the sea.

以下、この発明の好適な実施の形態について説明するが、この発明においては、以下の記述に限定されるものではなく、この発明の要旨を逸脱しない範囲においては適宜変更可能である。 Hereinafter, preferred embodiments of the present invention will be described, but the present invention is not limited to the following description, and can be appropriately changed as long as the gist of the present invention is not deviated.

次に、この発明の一実施例を図面に従って説明すると、陸上(R)で広幅加工された遮水シート(1)を設け、該遮水シートを海上へ引き摺り出す際、引き摺りエリアとして、下り勾配を有するスロープ面(S)を形成し、該スロープ面(S)上に底部シート(2)を敷設し、前記底部シート(2)と前記遮水シート(1)の間に放水により水膜層(3)を形成しておき、該水膜層(3)で遊離した遮水シート(1)を、引き摺り手段を用いて海上に牽引して移動させることを特徴とする遮水シートの移動工法から構成されるものである。 Next, an embodiment of the present invention will be described with reference to the drawings. When a water-impervious sheet (1) wide-processed on land (R) is provided and the water-impervious sheet is pulled out to the sea, a downward slope is used as a drag area. A slope surface (S) having a structure is formed, a bottom sheet (2) is laid on the slope surface (S), and a water film layer is discharged between the bottom sheet (2) and the impermeable sheet (1). A method for moving an impermeable sheet, which comprises forming (3) and pulling and moving the impermeable sheet (1) released in the aqueous film layer (3) to the sea using a dragging means. It is composed of.

次に、この発明である「遮水シートの移動工法」に使用する主な設備及び器具の一具体例を図1〜図3に基づいて説明すると、
1.建屋(X)
海岸より適宜な距離を有し、且つ適宜な高さを有する位置に設置し、原反ロール(Y)(Y´)からそれぞれ引き出した遮水ロール(1)を作業ステージ(WS)で拡幅加工する。
2.引出装置(Z)
建屋に隣接され、建屋内で広幅加工された遮水シート(1)を海岸方向に送り出す。
3.スロープ面(S)
建屋(X)の高さ位置より、引出装置(Z)で引き出された遮水シート(1)を海岸に向け引き摺り出す引き摺りエリアであり、ブイ等の浮力体(8)を装着する作業エリアでもあり、適宜な角度の下り勾配を有する傾斜面である。
4.牽引具(V)
スロープ面(S)に移動した遮水ロール(1)を海上へ牽引する器具である。
この発明は主にこれらの設備及び器具を用いた遮水シートの移動工法である。
Next, a specific example of the main equipment and instruments used in the "moving method of the impermeable sheet" of the present invention will be described with reference to FIGS. 1 to 3.
1. 1. Building (X)
The impermeable rolls (1) drawn from the original rolls (Y) and (Y') are widened on the work stage (WS) by installing them at a position that is at an appropriate distance from the coast and at an appropriate height. To do.
2. 2. Drawer (Z)
Adjacent to the building, the wide-processed impermeable sheet (1) inside the building is sent out toward the coast.
3. 3. Slope surface (S)
It is a drag area that pulls out the impermeable sheet (1) pulled out by the pull-out device (Z) from the height position of the building (X) toward the coast, and also in the work area where the buoyant body (8) such as a buoy is attached. Yes, it is an inclined surface having a downward slope of an appropriate angle.
4. Towing tool (V)
It is an instrument that pulls the impermeable roll (1) that has moved to the slope surface (S) to the sea.
The present invention is mainly a method of moving a water-impervious sheet using these facilities and instruments.

即ち、海上・陸上の境の水際、あるいは岸壁(G)より90m先の陸上(R)であって、海面より4mの高さ位置に、前方が開放された建屋(X)を設け、該建屋(X)内において遮水シート(1)の広幅加工を行うものである。そして、該建屋(X)内の後方付近に、遮水シート(1)を巻き取った複数の原反ロール(Y、Y´)を広幅規模に応じた複数個を並列して設け、しかも前列と後列を千鳥状に配列して設ける。 That is, a building (X) with an open front is provided at the water's edge between the sea and land, or on land (R) 90 m ahead of the quay (G) and at a height of 4 m from the sea surface. Wide processing of the impermeable sheet (1) is performed in (X). Then, in the vicinity of the rear side of the building (X), a plurality of original rolls (Y, Y') wound with the impermeable sheet (1) are provided in parallel according to the wide scale, and the front row. And the back row are arranged in a staggered pattern.

このように配列された各原反ロール(Y、Y´)の各遮水シート(1・・・)は、後述の引出装置(Z)によってそれぞれ順次引き出され、それぞれ隣接の遮水シート(1)との重なり合う端部を、建屋(X)内部の中央部に形成した作業ステージ(WS)で融着器具を用いて融着し、広幅加工を行うものである。 The impermeable sheets (1 ...) Of the original rolls (Y, Y') arranged in this way are sequentially drawn out by the drawing device (Z) described later, and are adjacent to each other. ) Is fused with a fusion tool on a work stage (WS) formed in the central portion inside the building (X), and wide processing is performed.

そして、建屋(X)の開放されている前方には、拡幅加工作業を行う前記建屋(X)の海側に隣接した前記引出装置(Z)を設けており、該装置により建屋(X)内で広幅加工を終えた遮水シート(1)を、引き摺りエリアであるスロープ面(S)に向けて引き出すものである。 Then, in front of the building (X) that is open, the drawer device (Z) adjacent to the sea side of the building (X) that performs widening processing work is provided, and the inside of the building (X) is provided by the device. The water-impervious sheet (1), which has been widened in (1), is pulled out toward the slope surface (S), which is a drag area.

このスロープ面(S)は、広幅加工作業を行う前記建屋(X)の海側に設けた引出装置(Z)に隣接して設けている。該スロープ面の最高部は、前記建屋(X)よりやや低く、最低部は水面より1mの岸壁(G)で、スロープ面の長さは、建屋(X)から岸壁(G)まで90mの長さを有する陸地(R)上に形成し、3.3%勾配を有している。 The slope surface (S) is provided adjacent to a drawer device (Z) provided on the sea side of the building (X) for performing wide processing work. The highest part of the slope surface is slightly lower than the building (X), the lowest part is the quay (G) 1 m from the water surface, and the length of the slope surface is 90 m from the building (X) to the quay (G). It is formed on land (R) with a slope and has a 3.3% gradient.

尚、前記広幅加工設備を有する建屋(X)から岸壁(G)までのスロープ面(S)の長さを90mとしたが、施工現場に敷設する遮水シートに合った長さを示したものであり、施工現場の大・小により広幅加工された遮水シート(1)の幅寸法は異なる。また、スロープ面(S)の横幅寸法に関しても特に問わない。 The length of the slope surface (S) from the building (X) having the wide processing facility to the quay (G) was set to 90 m, but the length was shown to match the impermeable sheet laid at the construction site. Therefore, the width dimension of the impermeable sheet (1) processed to be wide differs depending on the size of the construction site. Further, the width dimension of the slope surface (S) is not particularly limited.

前記広幅加工する遮水シート(1)の構造は、図3(A)、(B)に示すように、既存の遮水シート材(1a)の表裏面にそれぞれ保護マット材(1b)(1b)を設けた3層一体とした遮水シート(1)と、図3(C)(D)に示すように、前記保護マット材(1b)の表裏両面に遮水シート材(1a)、(1a)を設け、さらに、両遮水シート材(1a)の外側面に保護マット材(1b)をそれぞれ設けて5層一体とした既存の遮水シート(1´)が存在している。 As shown in FIGS. 3 (A) and 3 (B), the structure of the water-impervious sheet (1) to be wide-processed is such that the protective mat materials (1b) and (1b) are on the front and back surfaces of the existing water-impervious sheet material (1a), respectively. ), And as shown in FIGS. 3 (C) and 3 (D), the water-impervious sheet material (1a) and (1a) are provided on both the front and back surfaces of the protective mat material (1b). There is an existing impermeable sheet (1') in which 5 layers are integrated by providing 1a) and further providing a protective mat material (1b) on the outer surface of both impermeable sheet materials (1a).

この発明は、前記底部シート(2)をスロープ面(S)に敷設し、遮水シート(1)の引き摺りで生ずる引き裂きや摩擦の低減化を図ることを目的としたものであるが、遮水シート材(1a)の素材が超軟質のシートであるため、摩擦による遮水シートの引出しの可否を判断するために、次の静止摩擦係数を計測した。

相手側: 底部シート(2) 引張試料: 保護マット材(1b)
テーブル試験結果 μ=0.45
さらに、底部シート(2)と遮水シート(1)の間に水を流して静止摩擦係数を計測したところ
テーブル試験結果 μ=0.25
という数値を得た。本願発明は、上記試験結果により水膜層で摩擦低減が図れることが確認できたので出願に踏み切ったものである。
An object of the present invention is to lay the bottom sheet (2) on a slope surface (S) to reduce tearing and friction caused by dragging the water-impervious sheet (1). Since the material of the sheet material (1a) is an ultra-soft sheet, the following static friction coefficient was measured in order to determine whether or not the impermeable sheet could be pulled out due to friction.

Opposite side: Bottom sheet (2) Tensile sample: Protective mat material (1b)
Table test result μ = 0.45
Furthermore, when water was flowed between the bottom sheet (2) and the impermeable sheet (1) and the coefficient of static friction was measured, the table test result μ = 0.25.
I got the number. The present invention has been filed because it was confirmed from the above test results that friction can be reduced in the water film layer.

なお、この発明に使用する素材の一例を述べると、前記遮水シート材(1a)の素材は、超軟質PVCであり、保護マット材(1b)の素材は、ポリエステル製スパンボンド不織布であり、底部シート(2)の素材は、高密度ポリエチレンである。 As an example of the material used in the present invention, the material of the water-impervious sheet material (1a) is ultra-soft PVC, and the material of the protective mat material (1b) is a polyester spunbonded non-woven fabric. The material of the bottom sheet (2) is high-density polyethylene.

次に、複数本の軒梁材(T)で組み立てられた建屋(X)内で行う遮水シート(1)の広幅加工作業の一実施例を説明すると、遮水シート(1)の原反ロール(Y,Y´)は、前後2列にそれぞれ複数組の原反ロールを千鳥状に順次配備しておき、前列の原反ロール(Y)に対して後列の原反ロール(Y´)は、前列の原反ロール(Y)の両端より少し内側にセットしておく。 Next, an embodiment of the wide processing work of the impermeable sheet (1) performed in the building (X) assembled of a plurality of eaves beam members (T) will be described as the original fabric of the impermeable sheet (1). As for the rolls (Y, Y'), a plurality of sets of raw fabric rolls are sequentially arranged in two rows in the front and rear in a staggered manner, and the original fabric rolls (Y') in the back row are opposed to the original fabric rolls (Y) in the front row. Is set slightly inward from both ends of the original roll (Y) in the front row.

そして、前後の各両ロール(Y,Y´)から前記引出装置(Z)で、同一のスピードで引き出される遮水シート(1)の端部の重ね合った部分を、作業ステージ(WS)で融着器具を用いて融着作業を行って広幅加工作業を行うものである。 Then, on the work stage (WS), the overlapped portion of the end portion of the impermeable sheet (1) that is pulled out from both the front and rear rolls (Y, Y') by the drawing device (Z) at the same speed. Wide processing work is performed by performing fusion work using a fusion tool.

さらに、広幅加工された遮水シート(1)をスロープ面(S)に向けて引き出す引出装置(Z)の構造を詳細に説明すると、該引出装置(Z)は、前記建屋(X)の海岸側に隣接しており、長尺な4本のローラとトラス構造の長尺な枠本体(7)から構成されている。 Further, the structure of the drawer device (Z) for pulling out the wide-processed water-impervious sheet (1) toward the slope surface (S) will be described in detail. Adjacent to the side, it is composed of four long rollers and a long frame body (7) with a truss structure.

前記4本のローラは、ギアモータを動力源とする駆動ローラ(4)と、該ローラに挟み込んで送り出される遮水シート(1)を上部から押さえる押さえローラ(5)と、
駆動ローラ(4)の前後に位置するスナップローラ(6、6´)からなる。
そして、前記該押さえローラ(5)には、ライニングゴムが巻回されており、挟んだ遮水シート(1)の滑りを防止している。
The four rollers include a drive roller (4) powered by a gear motor, a pressing roller (5) that presses the water-impervious sheet (1) sandwiched between the rollers and sent out from above.
It consists of snap rollers (6, 6') located in front of and behind the drive roller (4).
A lining rubber is wound around the pressing roller (5) to prevent the sandwiched water-impervious sheet (1) from slipping.

また、スナップローラ(6)(6´)は、駆動ローラ(4)の前・後にそれぞれ位置し、前記駆動ローラ(4)より下方側に設け、遮水シート(1)の折り返しを設けることにより、駆動ローラ(4)に遮水シート(1)を食い込ませて送り出し効率を高めることができる。 Further, the snap rollers (6) and (6') are located before and after the drive roller (4), respectively, are provided below the drive roller (4), and the water-impervious sheet (1) is folded back. , The impermeable sheet (1) can be made to bite into the drive roller (4) to improve the delivery efficiency.

さらに、前記ギアモータにはブレーキ機構を設けることにより、ギアモータの停止時は、駆動ローラ(4)はブレーキされるため遮水シート(1)の逸走を防止できる。そして、前記枠本体(7)は、押さえローラ(5)とスナップローラ(6、6´)を軸着して支えており、駆動ローラ(4)は、別個に架台(7a)に軸着されている。 Further, by providing the gear motor with a brake mechanism, the drive roller (4) is braked when the gear motor is stopped, so that the water-impervious sheet (1) can be prevented from escaping. The frame body (7) is supported by axially attaching the pressing roller (5) and the snap roller (6, 6'), and the driving roller (4) is separately axially attached to the gantry (7a). ing.

そして、引出装置(Z)により引き出された遮水シート(1)は、スロープ面(S)に移動する。該スロープ面(S)の上端付近には送られて来る該遮水シート(1)と、スロープ面(S)に敷設された底部シート(2)との間に保持ローラ(9)を設け、該保持ローラ(9)の下降側に隣接して小径の放水管(10)を併設して設けており、遮水シート(1)を引き摺る直前に放水管(10)より放水し、放水した直後、牽引具(V)を用いて引き摺ることにより海上に向けて遮水シート(1)がスロープ面上を降下して行くよう構成している。 Then, the water-impervious sheet (1) pulled out by the pull-out device (Z) moves to the slope surface (S). A holding roller (9) is provided between the impermeable sheet (1) sent to the vicinity of the upper end of the slope surface (S) and the bottom sheet (2) laid on the slope surface (S). A small-diameter water discharge pipe (10) is provided adjacent to the descending side of the holding roller (9), and water is discharged from the water discharge pipe (10) immediately before the water-impervious sheet (1) is dragged, and immediately after the water is discharged. , The impermeable sheet (1) is configured to descend on the slope surface toward the sea by dragging with the traction tool (V).

なお、広幅加工された遮水シート(1)は、図4に示すように、海上に向け牽引される前にスロープ面(S)でブイ等の大量の浮力体(8)を付着しておくものであり、該遮水シート(1)の先端部には着脱自在に装着した長尺のバーに浮力体を設けた牽引具(V)で海上まで引き摺って牽引するものである。 As shown in FIG. 4, the wide-processed impermeable sheet (1) has a large amount of buoyant body (8) such as a buoy attached on the slope surface (S) before being towed toward the sea. The water-impervious sheet (1) is towed by a towing tool (V) provided with a buoyant body on a long bar detachably attached to the tip of the impermeable sheet (1).

さらに、前記遮水シート(1)は、保護マット材(1b)を介在させて積層して、3層一体若しくは、5層一体構造に形成した2種類の遮水シートを用意し、敷設施工目的や敷設施工現場の規模に合わせるようにしたものである。 Further, the water-impervious sheet (1) is laminated with a protective mat material (1b) interposed therebetween to prepare two types of water-impervious sheets formed into a three-layer integrated structure or a five-layer integrated structure for the purpose of laying construction. It is designed to match the scale of the construction site.

また、前記スロープ面(S)に敷設した底部シート(2)と前記遮水シート(1)の間に、保持ローラ(9)を設けると共に、該保持ローラに隣接した下り側に、該保持ローラより小径の放水管(10)を設けることにより、該放水管から放出される水は、遮水シート(1)に塞がれて水量を落とすことなく、常時、一定量の水を保持でき水膜層(3)が保持できるものである。 Further, a holding roller (9) is provided between the bottom sheet (2) laid on the slope surface (S) and the water-impervious sheet (1), and the holding roller is provided on the downward side adjacent to the holding roller. By providing a smaller diameter water discharge pipe (10), the water discharged from the water discharge pipe can always hold a constant amount of water without being blocked by the impermeable sheet (1) and reducing the amount of water. The film layer (3) can be retained.

なお、前記底部シート(2)は、スロープ面(S)だけでなく、建屋(X)内の作業ステージ(WS)の床面に敷設してもよく、これにより、融着作業により広幅加工を終えた遮水シート(1)を引出装置(Z)で摩擦抵抗を少なくしてスロープ面(S)方向に送り出すことができる。 The bottom sheet (2) may be laid not only on the slope surface (S) but also on the floor surface of the work stage (WS) in the building (X), whereby wide processing can be performed by fusion work. The finished water-impervious sheet (1) can be sent out in the slope surface (S) direction by reducing the frictional resistance with the drawing device (Z).

この発明の遮水シートの移動工法の技術を確立し、実施することにより産業上の利用可能性を有する。 By establishing and implementing the technique of the moving method of the impermeable sheet of the present invention, it has industrial applicability.

1,1´ 遮水シート
1a 遮水シート材
1b 保護マット材
2 底部シート
3 水膜層
4 駆動ローラ
5 押さえローラ
6,6´ スナップローラ
7 枠本体
7a 架台
8 浮力体
9 保持ローラ
10 放水管
G 岸壁
S スロープ面
T 軒梁材
R 陸上
V 牽引具
WS 作業ステージ
X 建屋
Y,Y´ 原反ロール
Z 引出装置
1,1'Water-impervious sheet 1a Water-impervious sheet material 1b Protective mat material 2 Bottom sheet 3 Water film layer 4 Drive roller 5 Holding roller 6, 6'Snap roller 7 Frame body 7a Stand 8 Buoyancy body 9 Holding roller 10 Water discharge pipe G Quay S Slope surface T Eaves beam material R Land V Towing tool WS Work stage X Building Y, Y'Original roll Z Drawer

Claims (3)

陸上で広幅加工された遮水シートを海上に移動させる遮水シートの移動工法であって、
該遮水シートを海上へ引き摺り出す際の引き摺りエリアを、下り勾配を有するスロープ面を設けて形成し、
該スロープ面上に底部シートを敷設し、
前記底部シートと前記遮水シートの間に、放水により水膜層を形成しておき、
該水膜層で遊離した遮水シートを、引き摺り手段を用いて海上に牽引して移動させる
ことを特徴とする遮水シートの移動工法。
It is a method of moving a water-impervious sheet that is wide-processed on land and moves it to the sea.
A drag area for dragging the impermeable sheet to the sea is formed by providing a slope surface having a downward slope.
A bottom sheet is laid on the slope surface,
A water film layer is formed by discharging water between the bottom sheet and the impermeable sheet.
A method for moving a water-impervious sheet, which comprises pulling and moving the water-impervious sheet released in the water film layer to the sea using a dragging means.
前記底部シートと前記遮水シートの間に、保存ローラと、該保存ローラの前記スロープ面の下り側に隣接した該保存ローラより小径の放水管とを設け、
放水により形成された前記水膜層の流れを保持する
ことを特徴とする請求項1記載の遮水シートの移動工法。
A storage roller and a water discharge pipe having a diameter smaller than that of the storage roller adjacent to the downward side of the slope surface of the storage roller are provided between the bottom sheet and the water-impervious sheet.
The method for moving an impermeable sheet according to claim 1, wherein the flow of the water film layer formed by discharging water is maintained.
前記底部シートを、建屋内の作業ステージの床面にも敷設した
ことを特徴とする請求項1または2記載の遮水シートの移動工法。
The method for moving an impermeable sheet according to claim 1 or 2, wherein the bottom sheet is also laid on the floor surface of a work stage in a building.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5262634U (en) * 1975-11-05 1977-05-09
JPH04114674A (en) * 1990-09-06 1992-04-15 Hiroshi Fujita Artificial skiing ground and ski for artificial skiing ground
JPH06108436A (en) * 1991-12-18 1994-04-19 Seibu Polymer Kasei Kk Impervious construction in water filled ground and impervious construction method
JP2002332684A (en) * 2001-05-08 2002-11-22 Sumiken Concrete Kogyo Kk Laying method for precast box culvert and moving method for concrete structure
JP2005041636A (en) * 2003-07-28 2005-02-17 Sumiken Concrete Kogyo Kk Object transfer device and its method
JPWO2009150756A1 (en) * 2008-06-13 2011-11-10 株式会社高井製作所 Automatic tofu packing machine
JP2017149492A (en) * 2016-02-22 2017-08-31 住友金属鉱山株式会社 Pipe conveyor and operation method of pipe conveyor
JP2019100131A (en) * 2017-12-06 2019-06-24 東洋建設株式会社 Method for placing impervious sheet

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5262634U (en) * 1975-11-05 1977-05-09
JPH04114674A (en) * 1990-09-06 1992-04-15 Hiroshi Fujita Artificial skiing ground and ski for artificial skiing ground
JPH06108436A (en) * 1991-12-18 1994-04-19 Seibu Polymer Kasei Kk Impervious construction in water filled ground and impervious construction method
JP2002332684A (en) * 2001-05-08 2002-11-22 Sumiken Concrete Kogyo Kk Laying method for precast box culvert and moving method for concrete structure
JP2005041636A (en) * 2003-07-28 2005-02-17 Sumiken Concrete Kogyo Kk Object transfer device and its method
JPWO2009150756A1 (en) * 2008-06-13 2011-11-10 株式会社高井製作所 Automatic tofu packing machine
JP2017149492A (en) * 2016-02-22 2017-08-31 住友金属鉱山株式会社 Pipe conveyor and operation method of pipe conveyor
JP2019100131A (en) * 2017-12-06 2019-06-24 東洋建設株式会社 Method for placing impervious sheet

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