JPH10196295A - Waterproof sheet and execution work method therefor - Google Patents
Waterproof sheet and execution work method thereforInfo
- Publication number
- JPH10196295A JPH10196295A JP8359161A JP35916196A JPH10196295A JP H10196295 A JPH10196295 A JP H10196295A JP 8359161 A JP8359161 A JP 8359161A JP 35916196 A JP35916196 A JP 35916196A JP H10196295 A JPH10196295 A JP H10196295A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- sheet
- nonwoven fabric
- waterproof sheet
- resin sheet
- 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
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 50
- 239000000057 synthetic resin Substances 0.000 claims abstract description 50
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 40
- 238000003466 welding Methods 0.000 claims abstract description 13
- 238000009412 basement excavation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 9
- 238000004078 waterproofing Methods 0.000 description 4
- -1 polypropylene Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はトンネル構築時の防
水シ−ト及びその施工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 waterproof sheet for constructing a tunnel and a method for constructing the sheet.
【０００２】[0002]
【従来の技術】近年、トンネル構築における防水シ−ト
施工法にあっては、いわゆるナトム工法と称する工法が
広く採用されており、これは掘削したトンネル掘削面に
一次覆工コンクリ−トを打ち、湧水を排水するため及び
緩衝材としての不織布をそのコンクリ−ト面に張設し、
この不織布面に防水用の合成樹脂シ−トを張設する構造
をとっている。2. Description of the Related Art In recent years, as a waterproof sheet construction method for tunnel construction, a so-called natom construction method has been widely adopted, in which a primary lining concrete is applied to an excavated tunnel excavation surface. , A non-woven fabric as a cushioning material is stretched on the concrete surface to drain spring water,
The structure is such that a synthetic resin sheet for waterproofing is stretched on the nonwoven fabric surface.
【０００３】このナトム工法の具体例としては、不織布
を一次覆工コンクリ−ト面に張設するに際しては、多数
の合成樹脂製の円盤プレ−トをもって不織布を押えるも
のであって、この円盤プレ−ト面に釘打ち込んで不織布
を張設し、更にこの円盤プレ−ト表面を熱溶融して防水
用の合成樹脂シ−トを固着張設することによって防水施
工が終了し、最終的にはこの防水シ−トの表面に二次覆
工コンクリ−トが打ち込まれて全施工が完成するもので
ある。[0003] As a specific example of the NATOM construction method, when a nonwoven fabric is stretched on a primary lining concrete surface, a large number of synthetic resin disc plates are used to press the nonwoven fabric. -The non-woven fabric is stretched by nailing on the surface of the disc, and the surface of the disc plate is hot-melted and a synthetic resin sheet for waterproofing is firmly stretched to complete the waterproofing work. A secondary lining concrete is driven into the surface of the waterproof sheet to complete the entire construction.
【０００４】[0004]
【発明が解決しようとする課題】しかるに、この施工法
にあっては、不織布及び表面の合成樹脂シ−トを夫々別
々にトンネル掘削全面に張設するものであって、このた
めの準備と施工工数が極めて大きく、改善すべき課題と
なっている。又、不織布と合成樹脂シ−トを張設した後
に合成樹脂製の円盤プレ−トを用いて釘打ちし、これに
よって両者を張設することも考えられるが、この場合に
は釘を打ち込んだ近傍より漏水が生じることはさけられ
ず、この施工法も問題をはらんでいる。However, in this construction method, the nonwoven fabric and the synthetic resin sheet on the surface are separately stretched over the entire surface of the tunnel excavation. The number of man-hours is extremely large, which is an issue to be improved. It is also conceivable that after the nonwoven fabric and the synthetic resin sheet are stretched, nailing is performed using a disc plate made of synthetic resin, and thereby both are stretched. In this case, the nail is driven. It is unavoidable that water leaks from the vicinity, and this construction method also has problems.
【０００５】[0005]
【課題を解決するための手段】本発明は以上の目的を達
成するためになされたものであって、その第１発明の要
旨は、トンネル掘削の地山面に打設された一次覆工コン
クリ−トのトンネル周方向面の全長に一定幅をもって張
設される不織布と、この不織布の表面に張設される合成
樹脂シ−トとを予め接合して一体化し、当該不織布と合
成樹脂シ−トのトンネル周方向端縁は両者を非熱溶着部
としたことを特徴とする防水シ−トにかかるものであ
る。DISCLOSURE OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and the gist of the first invention is to provide a primary lining concrete cast on a ground surface for tunnel excavation. A non-woven fabric stretched over the entire length of the tunnel in the circumferential direction with a fixed width and a synthetic resin sheet stretched on the surface of the non-woven fabric are joined in advance and integrated, and the non-woven fabric and the synthetic resin sheet are combined. The end of the tunnel in the circumferential direction of the tunnel is a non-heat-welded portion, which is a waterproof sheet.
【０００６】そして、通常はこの不織布と合成樹脂シ−
トとの接合部は、トンネル周方向に向けて直線状或いは
列状をなしているものであって、場合によっては、即ち
不織布の幅が長尺な場合には複数の合成樹脂シ−トを熱
溶着するのもよく、この場合、当該合成樹脂シ−トの突
き合わせ端縁をオ−バ−ラップ可能な長さとしてこの部
位を熱溶着可能なものとするのがよい。[0006] Usually, the nonwoven fabric and the synthetic resin
The joint portion with the sheet is formed in a straight line or a row in the circumferential direction of the tunnel. In some cases, that is, when the width of the nonwoven fabric is long, a plurality of synthetic resin sheets are used. It is also possible to perform heat welding. In this case, it is preferable that the butting edge of the synthetic resin sheet be a length that can be overlapped so that this portion can be heat-welded.
【０００７】又、第２発明の要旨は、トンネル掘削の地
山面に一次覆工コンクリ−ト層を形成し、この一次覆工
コンクリ−トのトンネル周方向の全長に渡って請求項第
１項に記載の防水シ−トの不織布側を一次覆工コンクリ
−ト面に当接し、当該防水シ−トの非熱溶着部面に釘を
打設して防水シ−トを張設し、非熱溶着部をはさむ左右
の合成樹脂シ−ト端縁を熱溶着固定したことを特徴とす
る防水シ−トの施工法にかかるものである。The gist of the second invention is that a primary lining concrete layer is formed on the ground surface of a tunnel excavation, and the primary lining concrete extends over the entire length of the primary lining concrete in the circumferential direction of the tunnel. The non-woven fabric side of the waterproof sheet described in the above item abuts on the primary lining concrete surface, and nails are cast on the non-heat-welded surface of the waterproof sheet to stretch the waterproof sheet, The present invention relates to a method for constructing a waterproof sheet, wherein left and right synthetic resin sheet edges sandwiching a non-heat-welded portion are fixed by heat welding.
【０００８】[0008]
【発明の実施の形態】第１発明における防水シ−トは、
不織布と合成樹脂シ−トが予め熱溶着されたものであっ
て、不織布としては通常はポリプロピレン繊維、ポリエ
ステル繊維、ナイロン繊維等から選択され、一方、防水
シ−トの表面となる合成樹脂シ−トはポリエチレン、ポ
リプロピレン、ＥＶＡ樹脂等から選択され、これら不織
布と合成樹脂シ−トが重ねられて直線状に或いはスポッ
トをもって列状に熱溶着されたものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The waterproof sheet according to the first invention is
A non-woven fabric and a synthetic resin sheet are heat-sealed in advance, and the non-woven fabric is usually selected from polypropylene fiber, polyester fiber, nylon fiber, and the like. On the other hand, the synthetic resin sheet to be the surface of the waterproof sheet The sheet is selected from polyethylene, polypropylene, EVA resin and the like, and these non-woven fabrics and synthetic resin sheets are overlapped and thermally welded linearly or in rows with spots.
【０００９】そして、通常は防水シ−トは一次覆工コン
クリ−トのトンネル周方向面の全長に一定幅をもって張
設されるが、隣り合う防水シ−トは完全に一体化されて
漏水のないようにしなければならない。このため、本発
明の防水シ−トにあっては、不織布に対して合成樹脂シ
−トの縁端は非熱溶着部とされ、しかもこの合成樹脂の
縁端はオ−バ−ラップ可能即ち熱溶着できるだけの長さ
としたものである。Normally, the waterproof sheet is stretched with a certain width over the entire length of the primary lining concrete in the circumferential direction of the tunnel, but the adjacent waterproof sheets are completely integrated to prevent water leakage. Must not be. Therefore, in the waterproof sheet of the present invention, the edge of the synthetic resin sheet is a non-heat-welded portion with respect to the non-woven fabric, and the edge of the synthetic resin is overlappable. The length should be as long as possible for heat welding.
【００１０】尚、不織布の幅は通常は有効幅１６００ｍ
ｍ程度であるが、この幅が広い場合例えば倍の幅の３２
００ｍｍにあっては、防水シ−トの表面材となる合成樹
脂シ−トをその幅方向に均等に２分割された状態で熱溶
着されることもあり、この場合には幅方向中央部に形成
される非熱溶着部をはさむ２枚の合成樹脂シ−ト縁端を
これ又熱溶着可能な長さ例えば２００ｍｍ程度のオ−バ
−ラップ部としておくことが必要である。The width of the nonwoven fabric is usually 1600 m in effective width.
m, but when the width is large, for example, a double width of 32
In the case of 00 mm, the synthetic resin sheet as the surface material of the waterproof sheet may be heat-welded in a state of being equally divided into two in the width direction. It is necessary that the edges of the two synthetic resin sheets sandwiching the non-heat-welded portion to be formed have an overlap portion, for example, about 200 mm in length, which can be heat-welded.
【００１１】第２発明、即ち第１発明にかかる防水シ−
トの一次覆工コンクリ−ト面への張設は、合成樹脂シ−
トの非熱溶着部を利用して釘を打ち込むことによって行
うものであり、この際、不織布を支持するために合成樹
脂円盤プレ−トを介して釘を打ち込むのがよい。次いで
この非熱溶着部の両側に位置する合成樹脂シ−トの縁端
を熱溶着固定して防水施工が終了することになる。The second invention, that is, the waterproof seal according to the first invention
The primary lining on the concrete surface should be
This is performed by driving a nail using a non-heat-welded portion of the plate. In this case, it is preferable to drive the nail through a synthetic resin disk plate to support the nonwoven fabric. Next, the edges of the synthetic resin sheet located on both sides of the non-heat-welded portion are heat-welded and fixed, thereby completing the waterproofing work.
【００１２】[0012]
【実施例】以下、本発明の防水シ−トをその施工例と共
に実施例をもって更に詳細に説明する。図１は本発明の
防水シ−トＡの斜視図であって、符号１はポリエステル
製の不織布であって、２は防水シ−トの表面となる合成
樹脂シ−ト（ＥＶＡ製のシ−ト）である。そして、３は
接合（熱溶着）部であって、不織布１の端縁１1 、１2
と合成樹脂シ−ト２の端縁２1 、２2 とは非熱溶着部４
とされている。この不織布１の端縁１1 、１2 は一次覆
工コンクリ−トに釘を打ち込む部位であり、一方、合成
樹脂シ−ト２の端縁２1 、２2 は熱溶着に供する部位で
ある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The waterproof sheet of the present invention will be described in more detail below with reference to working examples together with working examples. FIG. 1 is a perspective view of a waterproof sheet A of the present invention. Reference numeral 1 denotes a polyester nonwoven fabric, and reference numeral 2 denotes a synthetic resin sheet (EVA sheet) to be the surface of the waterproof sheet. G). Numeral 3 denotes a joint (heat-welded) portion, which is an edge 1 1 , 1 2 of the nonwoven fabric 1.
A synthetic resin sheet - edge 2 bets 2 1, 2 2 and non-seal portion 4
It has been. The edges 1 1 and 1 2 of the nonwoven fabric 1 are portions where nails are driven into the primary lining concrete, while the edges 2 1 and 2 2 of the synthetic resin sheet 2 are portions subjected to heat welding. .
【００１３】図２は防水シ−トＡを一次覆工コンクリ−
ト面に施工した例を示すトンネル半裁断面図であって、
図中、符号ａはトンネル掘削の地山、ｂはここに打ち込
まれた一次覆工コンクリ−トであり、防水シ−トＡの不
織布１側を一次覆工コンクリ−トｂ面にトンネルの周方
向面に沿って当接し、非熱溶着部４に合成樹脂製の円盤
５を介して釘６をもって不織布１を張設する。このよう
に防水シ−トＡを順次一次覆工コンクリ−トｂ面の周方
向沿って不織布１を張設し、次いで同じ方向に沿った合
成樹脂シ−ト２の端縁２1 、２2 を熱溶着７とすること
によって合成樹脂シ−ト２を不織布１の表面に張設する
ものである。FIG. 2 shows a case in which the waterproof sheet A is primarily covered with concrete.
It is a tunnel half-cut sectional view showing an example of construction on the surface,
In the drawing, reference numeral a denotes a ground for excavation of a tunnel, and b denotes a primary lining concrete driven into the tunnel. The nonwoven fabric 1 side of the waterproof sheet A is placed on the surface of the primary lining concrete b around the tunnel. The non-woven fabric 1 is attached to the non-heat-welded portion 4 with a nail 6 via a disk 5 made of a synthetic resin. Thus waterproof sheet - A preparative A sequential order lining concrete - along the circumferential direction of the preparative b plane stretched nonwoven 1, then synthetic resin sheet along the same direction - edge 2 1 bets 2, 2 2 Is used as the heat welding 7 to stretch the synthetic resin sheet 2 on the surface of the nonwoven fabric 1.
【００１４】本発明の防水シ−トＡは、不織布１と合成
樹脂シ−ト２を予め接合（熱溶着）によって一体化し、
しかも一次覆工コンクリ−トｂ面に張設するための非熱
溶着部４を備えたものであって、その施工性は著しく向
上したものである。In the waterproof sheet A of the present invention, the nonwoven fabric 1 and the synthetic resin sheet 2 are integrated by bonding (heat welding) in advance.
In addition, it has a non-heat-welded portion 4 to be stretched on the surface of the primary lining concrete b, and its workability is remarkably improved.
【００１５】図３は本発明の防水シ−トＢの断面図であ
って、不織布１の幅３４００ｍｍに熱溶着される合成樹
脂シ−ト２は幅２０００ｍｍとされ、不織布１中央に２
００ｍｍ程度オ−バ−ラップさせできるようにし、この
部位１0 及び端縁１1 、１2を非熱溶着部４として両者
を熱溶着３にて一体化したものである。FIG. 3 is a cross-sectional view of the waterproof sheet B of the present invention. The synthetic resin sheet 2 which is heat-welded to the width 3400 mm of the non-woven fabric 1 has a width of 2000 mm, and the center 2
00mm about O - bar - as Dekiru is wrapped, both the site 1 0 and the edge 1 1, 1 2 as non-seal portion 4 is formed by integrating at heat welding 3.
【００１６】この防水シ−トＢを使用することにより、
合成樹脂シ−ト２、２の中央部を開いて不織布１0 に釘
６打ちが可能となったもので、合成樹脂シ−ト２、２に
傷を付けることなく防水シ−トＢを張設可能となったも
のである。従って、防水シ−トＢを使用することによ
り、一次覆工コンクリ−トｂ面の広い範囲にわたり比較
的容易にしかも合成樹脂シ−ト２に傷を付けずに張設可
能となったものである。By using this waterproof sheet B,
Synthetic resin sheet - open a central portion of the preparative 2,2 those became possible 6 beating nail nonwoven 1 0, synthetic resin sheet - waterproof sheet without damaging the bets 2,2 - bets B Zhang It is now possible to set it up. Accordingly, by using the waterproof sheet B, it is possible to relatively easily stretch the synthetic resin sheet 2 over the wide area of the primary lining concrete b without damaging the synthetic resin sheet 2. is there.
【００１７】[0017]
【発明の効果】本発明の防水シ−トは以上の通りの構造
を有しており、一次覆工コンクリ−ト面の広い範囲にわ
たり比較的容易にしかも合成樹脂シ−トに傷を付けずに
張設可能となったものであり、その実用価値は極めて高
い。The waterproof sheet of the present invention has the above-mentioned structure, and is relatively easy to cover a wide area of the primary lining concrete surface without damaging the synthetic resin sheet. The practical value is extremely high.
【図１】図１は本発明の防水シ−トＡの斜視図である。FIG. 1 is a perspective view of a waterproof sheet A of the present invention.
【図２】図２は図１の防水シ−トＡを一次覆工コンクリ
−ト面に施工した例を示すトンネル半裁断面図である。FIG. 2 is a half sectional view of a tunnel showing an example in which the waterproof sheet A of FIG. 1 is constructed on a primary lining concrete surface.
【図３】図３は本発明の防水シ−トＢの施工断面図であ
る。FIG. 3 is a construction sectional view of a waterproof sheet B of the present invention.
Ａ、Ｂ‥‥本発明の防水シ−ト、 ａ‥‥トンネル掘削の地山、 ｂ‥‥一次覆工コンクリ−ト、 １‥‥不織布、 １0 ‥‥不織布の中央部、 １1 、１2 ‥‥不織布の端縁、 ２‥‥防水シ−トの表面となる合成樹脂シ−ト、 ２1 、２2 ‥‥合成樹脂シ−トの端縁、 ３‥‥接合（熱溶着）部、 ４‥‥非熱溶着部、 ５‥‥合成樹脂製の円盤、 ６、６0 ‥‥釘、 ７‥‥合成樹脂シ−ト端縁の熱溶着部。A, the waterproof sheet of the B ‥‥ present invention - DOO, of a ‥‥ tunneling natural ground, b ‥‥ primary lining concrete - DOO, 1 ‥‥ nonwoven, a central portion of the 1 0 ‥‥ nonwoven, 1 1, 1 2 ‥‥ edge of the nonwoven fabric, 2 ‥‥ waterproof sheet - a preparative surface synthetic resin sheet - DOO, 2 1, 2 2 ‥‥ synthetic resin sheet - DOO edge, 3 ‥‥ bonding (heat welded) portion , 4 ‥‥ non heat seal parts, 5 ‥‥ synthetic resin disc, 6,6 0 ‥‥ nails, 7 ‥‥ synthetic resin sheet - DOO end heat seal parts of the edge.
Claims (4)
覆工コンクリ−トのトンネル周方向面の全長に一定幅を
もって張設される不織布と、この不織布の表面に張設さ
れる合成樹脂シ−トとを予め接合して一体化し、当該不
織布と合成樹脂シ−トのトンネル周方向端縁は両者を非
熱溶着部としたことを特徴とする防水シ−ト。1. A non-woven fabric stretched over the entire length of a circumferential surface of a tunnel of a primary lining concrete cast on a ground surface of a tunnel excavation, and a composite stretched on the surface of the non-woven fabric. A waterproof sheet characterized in that a resin sheet and a synthetic resin sheet are joined together in advance, and both edges of the nonwoven fabric and the synthetic resin sheet in the tunnel circumferential direction are non-heat-welded portions.
トンネル周方向に向けて直線状或いは列状をなしている
請求項第１項記載の防水シ−ト。2. The joint between the nonwoven fabric and the synthetic resin sheet is:
2. The waterproof sheet according to claim 1, wherein the waterproof sheet has a linear shape or a line shape in a circumferential direction of the tunnel.
トを熱溶着し、当該合成樹脂シ−トの突き合わせ端縁を
オ−バ−ラップ可能な長さとした請求項第１項記載の防
水シ−ト。3. A method for forming a plurality of synthetic resin sheets on the surface of a nonwoven fabric.
2. A waterproof sheet according to claim 1, wherein said sheet is heat-welded so that abutting edges of said synthetic resin sheet have a length capable of overlapping.
リ−ト層を形成し、この一次覆工コンクリ−トのトンネ
ル周方向の全長に渡って請求項第１項に記載の防水シ−
トの不織布側を一次覆工コンクリ−ト面に当接し、当該
防水シ−トの非熱溶着部面に釘を打設して防水シ−トを
張設し、非熱溶着部をはさむ左右の合成樹脂シ−ト端縁
を熱溶着固定したことを特徴とする防水シ−トの施工
法。4. A waterproof sheet according to claim 1, wherein a primary lining concrete layer is formed on the ground surface of the tunnel excavation, and the primary lining concrete extends over the entire length in the circumferential direction of the tunnel.
The nonwoven fabric side of the sheet comes into contact with the primary lining concrete surface, and a nail is driven into the non-heat-welded portion surface of the waterproof sheet, the waterproof sheet is stretched, and the non-heat-welded portion is sandwiched. A method for constructing a waterproof sheet, characterized in that the edge of the synthetic resin sheet is fixed by heat welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35916196A JP3816171B2 (en) | 1996-12-29 | 1996-12-29 | Waterproof sheet and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35916196A JP3816171B2 (en) | 1996-12-29 | 1996-12-29 | Waterproof sheet and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10196295A true JPH10196295A (en) | 1998-07-28 |
| JP3816171B2 JP3816171B2 (en) | 2006-08-30 |
Family
ID=18463064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35916196A Expired - Fee Related JP3816171B2 (en) | 1996-12-29 | 1996-12-29 | Waterproof sheet and construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3816171B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013241805A (en) * | 2012-05-22 | 2013-12-05 | Japan Railway Construction Transport & Technology Agency | Filler supply method for use with tunnel waterproofing technique, and filler supply structure |
| JP2017214752A (en) * | 2016-05-31 | 2017-12-07 | ダイワボウホールディングス株式会社 | Waterproof sheet for rainwater storage system and method for installing rainwater storage system |
| JP2019127667A (en) * | 2018-01-24 | 2019-08-01 | 花王株式会社 | Manufacturing method of wiping sheet |
| JP2020063647A (en) * | 2018-10-16 | 2020-04-23 | 株式会社エイチケーエス | Tunnel waterproof sheet and tunnel |
-
1996
- 1996-12-29 JP JP35916196A patent/JP3816171B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013241805A (en) * | 2012-05-22 | 2013-12-05 | Japan Railway Construction Transport & Technology Agency | Filler supply method for use with tunnel waterproofing technique, and filler supply structure |
| JP2017214752A (en) * | 2016-05-31 | 2017-12-07 | ダイワボウホールディングス株式会社 | Waterproof sheet for rainwater storage system and method for installing rainwater storage system |
| JP2019127667A (en) * | 2018-01-24 | 2019-08-01 | 花王株式会社 | Manufacturing method of wiping sheet |
| JP2020063647A (en) * | 2018-10-16 | 2020-04-23 | 株式会社エイチケーエス | Tunnel waterproof sheet and tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3816171B2 (en) | 2006-08-30 |
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