JPS63315800A - Waterproof sheet - Google Patents
Waterproof sheetInfo
- Publication number
- JPS63315800A JPS63315800A JP62152105A JP15210587A JPS63315800A JP S63315800 A JPS63315800 A JP S63315800A JP 62152105 A JP62152105 A JP 62152105A JP 15210587 A JP15210587 A JP 15210587A JP S63315800 A JPS63315800 A JP S63315800A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- water
- cushioning
- waterproof
- waterproof 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
- 238000010030 laminating Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 34
- 230000035699 permeability Effects 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000004745 nonwoven fabric Substances 0.000 description 5
- 239000013049 sediment Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、特にトンネルの二次覆工コンクリートと二次
覆工コンクリートとの間に配設されて二次覆工コンクリ
ート側からの湧水が二次覆工コンクリート側に漏水する
のを防止する等のために用いる防水シートに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention is particularly advantageous in that a tunnel is provided between secondary lining concrete and spring water from the secondary lining concrete side to the secondary lining concrete side. This invention relates to a waterproof sheet used to prevent water from leaking into the water.
来の 術 び 日が しようとする間 点従来、NA
TM工法にみられるように、トンネルの二次覆工コンク
リートと二次覆工コンクリートの間に防水シートを介装
し、−法覆エコンクリート側からの湧水(トンネル内へ
の地中からの湧水)が二次覆工コンクリート側に漏水す
るのを防止することが行なわれているが、この目的に使
用する防水シートとして第4図に示したように不透水性
基材シートaに不織布等の緩衝性を有する通水性シート
bを貼合したものが知られている(実公昭51−378
44号公報)。この防水シートは、通水性シートbを二
次覆工コンクリート側に配置し、−法覆エコンクリート
側がらの湧水をこの通水性シートb内に流下させるよう
にしたものであるが、大量に湧水のある箇所では長期間
に亘ってトンネル内で使用した場合、湧水中に含まれる
土砂が通水性シートb内に堆積して湧水通路を塞いでし
まい、透水性能、防水性能が低下するので、長期間に亘
って永続的に使用できないという問題を有している。Traditionally, NA
As seen in the TM construction method, a waterproof sheet is interposed between the secondary lining concrete and the secondary lining concrete of the tunnel, and - spring water from the lining concrete side (from underground into the tunnel) is interposed between the secondary lining concrete and the secondary lining concrete. Spring water) is being prevented from leaking into the secondary lining concrete side, and the waterproof sheet used for this purpose is a non-woven fabric on an impermeable base sheet a, as shown in Figure 4. It is known that a water-permeable sheet b having cushioning properties such as
Publication No. 44). In this waterproof sheet, a water permeable sheet b is placed on the secondary lining concrete side so that spring water from the lining concrete side flows down into this water permeable sheet b. If used in a tunnel for a long period of time in a place where there is spring water, the earth and sand contained in the spring water will accumulate in the water-permeable sheet b and block the spring water passage, resulting in a decrease in water permeability and waterproof performance. Therefore, there is a problem that it cannot be used permanently for a long period of time.
また、第5図に示すように、不透水性シートaに不織布
等の通水性シートbを複数箇所で部分接着Cすることに
よって透水斌を増加させ、透水性能を高めた防水シート
も提案されている(実開昭59−5700号公報等)。Furthermore, as shown in Fig. 5, a waterproof sheet has been proposed in which water permeability is increased by partially adhering a water permeable sheet b such as a nonwoven fabric to a water impermeable sheet a at multiple locations, thereby increasing water permeability. (Utility Model Application Publication No. 59-5700, etc.).
しかし、この防水シートも上記と同様に湧水の多いとこ
ろでは長期間使用するうちに透水性能、防水性能が低下
するおそれがある。However, similarly to the above, there is a risk that the water permeability and waterproof performance of this waterproof sheet may deteriorate over a long period of use in areas where there is a lot of spring water.
本発明は上記事情に鑑みなされたもので、永年使用して
も土砂による目詰りがなく、流水性能が良好に保持され
、しかもトンネル工事の際の突起物等に対して優れた緩
衝効果を有する防水シートを提供することを目的とする
。The present invention was developed in view of the above circumstances, and has no clogging with earth and sand even after long-term use, maintains good water flow performance, and has an excellent buffering effect against protrusions during tunnel construction. The purpose is to provide waterproof sheets.
皿yμL1脛p】−[だ至!どE反
部ち、本発明は上記目的を達成するため、多数の線状体
が相互に交差しながら水平方向ならびに厚み方向に不規
則に方向を変えて一方から他方に延びており、これら多
数の連続線状体が各々の交差点で少なくとも一部で相互
に接着したうねり状凹凸を有するシート状網状体を形成
しており、該網状体を緩衝性シートの一面の少なくとも
一部に積層すると共に、該緩衝性シートの他方の面に不
透水性シートを積層するようにしたものである。Dish yμL1 shinp] - [Dasai! However, in order to achieve the above object, the present invention has a large number of linear bodies extending from one side to the other while intersecting each other and changing directions irregularly in the horizontal direction and the thickness direction. The continuous linear bodies form a sheet-like network having undulations and convexities that are adhered to each other at least in part at each intersection, and the network is laminated on at least a part of one surface of the cushioning sheet. , a water-impermeable sheet is laminated on the other surface of the cushioning sheet.
ここで、シート状網状体としては、線状体の太さが0.
5〜3mmであり、シート状網状体の網目の大きさが0
.1〜20noであり、かつ該シート状網状体の高さが
1〜301mであるものが好適に用いられる。なお、本
発明にいう網目の大きさとは隣接する2本の線状体間の
最大距離を表す。Here, as for the sheet-like net-like body, the thickness of the linear body is 0.
5 to 3 mm, and the mesh size of the sheet-like mesh body is 0.
.. 1 to 20 no., and the height of the sheet-like network is 1 to 301 m. Note that the mesh size in the present invention refers to the maximum distance between two adjacent linear bodies.
隣接する2本の線状体は平面又は三次元空間を形成する
から、その距離は一方の線状体の任意の点とその点にお
ける接線に垂直で、かつその点を含む平面と他の線状体
とが交わる点との直線距離をいう。Since two adjacent linear bodies form a plane or three-dimensional space, the distance between them is perpendicular to any point on one linear body and the tangent at that point, and between the plane containing that point and the other line. This is the straight line distance from the point where the two objects intersect.
また、緩衝性シートとしては不織布等の透水性を有する
シートが好適に用いられる。Further, as the cushioning sheet, a water-permeable sheet such as a nonwoven fabric is preferably used.
止皿
本発明の防水シートによれば、不透水性シートと、緩衝
性シートと、上述した比較的網目の大きいうねり状凹凸
を有する特殊のシート状網状体を順次積層しであるため
、例えばこの防水シートをトンネル工事の一次覆エコン
クリートと二次覆工コンクリートとの間に上記網状体を
一次覆エコンクリート側に配置して張設した場合、−法
覆エコンクリート側からの湧水はこの網状体内(網状体
の空隙部)を通って流下し、外部へ排出されるが、この
際湧水中に多量の土砂が含まれていても、網状体がこの
土砂によって目詰りし難く、湧水通路が確実に確保され
るので、湧水が常時確実に外部に誘導排出されると共に
、土砂も湧水と共に排出される。従って、長期間使用し
ても優れた流水性能を発揮し、永続的な使用を可能とす
るものである。According to the waterproof sheet of the present invention, the water-impermeable sheet, the cushioning sheet, and the above-mentioned special sheet-like mesh body having relatively large mesh undulations and recesses are laminated in sequence. When a waterproof sheet is stretched between the primary lining concrete and secondary lining concrete of tunnel construction, with the above net-like body placed on the primary lining concrete side, the spring water from the lining concrete side will be It flows down through the reticulated body (the voids in the reticulated body) and is discharged to the outside.At this time, even if the spring water contains a large amount of sediment, the reticulated body is not easily clogged with this sediment, and the spring water is Since the passage is reliably secured, the spring water is always reliably guided and discharged to the outside, and the earth and sand are also discharged together with the spring water. Therefore, even when used for a long period of time, it exhibits excellent water flow performance and can be used permanently.
また、緩衝性シートの配設により、トンネル工事の際の
鉄筋、ボルト等の突起物に対して優れた緩衝作用を発揮
し、これら鉄筋、ボルト等の突起物に防水シートがかか
っても緩衝性シートにより不透水性シートが保護されて
、不透水性シートの破損が防止され、防水シート本来の
機能を確保することができる。In addition, by installing a cushioning sheet, it exhibits an excellent cushioning effect against protrusions such as reinforcing bars and bolts during tunnel construction. The water-impermeable sheet is protected by the sheet, preventing damage to the water-impermeable sheet, and ensuring the original function of the waterproof sheet.
以下、本発明の実施例につき第1図乃至第3図を参照し
て説明する。Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.
尖五五
第1図は本発明の一実施例に係る防水シートを示すもの
で、この防水シート1は、不透水性シート2の片面に緩
衝性シート3及びうねり状凹凸を有するシート状網状体
4を積層してなるものである。Fig. 1 shows a waterproof sheet according to an embodiment of the present invention, and this waterproof sheet 1 includes a water-impermeable sheet 2, a cushioning sheet 3 on one side, and a sheet-like mesh body having undulating irregularities on one side. 4 is laminated.
ここで、不透水性シート2としては、ポリ塩化ビニル、
ポリエチレン、ポリプロピレン、エチレン−酢酸ビニル
共重合体、エチレン−アクリル酸共重合体等の合成樹脂
シートが好適であり、またその厚さは0.3〜6IIn
とすることが好ましい。Here, as the water-impermeable sheet 2, polyvinyl chloride,
Synthetic resin sheets such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, etc. are suitable, and the thickness thereof is 0.3 to 6 IIn.
It is preferable that
また、緩衝性シート3としては、厚さ2〜10rm程度
の織布又は不織布、特にポリエチレン、ボリプロピレン
、ポリエステル、ナイロン等の合成樹脂製不織布が好適
に用いられる。Further, as the cushioning sheet 3, a woven fabric or a nonwoven fabric having a thickness of about 2 to 10 rm, particularly a nonwoven fabric made of synthetic resin such as polyethylene, polypropylene, polyester, or nylon, is preferably used.
更に、上記シート状網状体4は、第2,3図に示したよ
うにポリアミド、ポリエステル、又はポリエチレン、ポ
リプロピレンのようなポリオレフィン等の合成樹脂細線
、ポリ塩化ビニル等の合成樹脂で被覆した金属線、また
は金属線などの線状体5の多数が相互に交差しながら水
平方向ならびに厚み方向に不規則に方向を変えて一方か
ら他方に延びており、これら多数の連続線状体が各々の
交差点で少なくとも一部で相互に接着したうねり状凹凸
を有する網状シートに形成されてなるものであり、かか
る形状を保持する保形性と剛性とを有するものである。Furthermore, as shown in FIGS. 2 and 3, the sheet-like network body 4 is made of a thin synthetic resin wire made of polyamide, polyester, or polyolefin such as polyethylene or polypropylene, or a metal wire coated with a synthetic resin such as polyvinyl chloride. , or a large number of linear bodies 5 such as metal wires extend from one side to the other while intersecting each other while changing directions irregularly in the horizontal direction and the thickness direction, and these many continuous linear bodies 5 cross each other. It is formed into a net-like sheet having undulating concavities and convexities that are bonded to each other in at least some parts, and has shape retention and rigidity to maintain this shape.
この場合、このシート状網状体4を構成する線状体5の
太さは0.5〜3mとすることが好適であり、またシー
ト状網状体4の網目8の大きさは0.1〜20m、特に
1〜101mとすることが好ましい。更に、シート状網
状体4の高さh、即ち上側に最も高6xうねりの頂部と
下側に最も高いうねりの頂部との間の間隔は1〜30n
n+、特に2〜10mmとすることが好適である。In this case, the thickness of the linear bodies 5 constituting the sheet-like net-like body 4 is preferably 0.5 to 3 m, and the size of the meshes 8 of the sheet-like net-like body 4 is 0.1 to 3 m. The length is preferably 20 m, particularly 1 to 101 m. Furthermore, the height h of the sheet-like mesh body 4, that is, the distance between the top of the highest 6x undulations on the upper side and the top of the highest undulations on the bottom side is 1 to 30n.
n+, particularly preferably 2 to 10 mm.
なお、不透水性シート2と緩衝性シート3、緩衝性シー
ト3と網状体4との積層態様は適宜選定することができ
、不透水性シート2又は緩衝性シート3の一面全面にそ
れぞれ緩衝性シート3又は網状体4を積層してもよく、
また不透水性シート2又は緩衝性シート3の一面に部分
的に緩衝性シート3又は網状体4をそれぞれ積層しても
よい。Note that the lamination mode of the water-impermeable sheet 2 and the cushioning sheet 3 and the cushioning sheet 3 and the net-like body 4 can be selected as appropriate. The sheets 3 or the mesh body 4 may be laminated,
Further, the cushioning sheet 3 or the mesh body 4 may be partially laminated on one surface of the water-impermeable sheet 2 or the cushioning sheet 3, respectively.
また、不透水性シートと網状体とは全面的に接着しても
よいが、防水シートの作業性、取扱性を良好ならしめる
ために両者を接着剤等で部分的に接合して一体化しても
よい。更に、不透水性シート2と緩衝性シート3も適宜
方法により全面接着又は部分接着される。In addition, although the impermeable sheet and the net-like body may be glued together over the entire surface, in order to improve the workability and handling of the waterproof sheet, it is preferable to partially join them together with an adhesive or the like to integrate them. Good too. Further, the water-impermeable sheet 2 and the cushioning sheet 3 are also fully or partially adhered by an appropriate method.
この第1図に示す防水シート1は、例えばトンネルの一
次覆エコンクリートと二次覆工コンクリートとの間に張
設する場合、不透水性シート2を二次覆工コンクリート
側に、網状体4を二次覆工コンクリート側に配置するも
ので、これにより前記網状体4を導水路として形成する
。この防水シート1によれば、導水路を形成する網状体
4は。For example, when the waterproof sheet 1 shown in FIG. is placed on the secondary lining concrete side, thereby forming the net-like body 4 as a water conduit. According to this waterproof sheet 1, the net-like body 4 forming the water conduit is as follows.
多数の線状体が相互に交差しながら水平方向ならびに厚
み方向に不規則に方向を変えて一方から他方に延びてお
り、これら多数の連続線状体が各々の交差点で少なくと
も一部で相互に接着したうねり状凹凸を有する比較的網
目の大きいシート体であるため、この内部(網状体の空
隙部)を流れる湧水がかなりの土砂を伴なうものであっ
ても、土砂による目詰りを生じることなく、土砂を湧水
と共に排出することができるものである。またこの場合
、網状体4は良好な保形性と剛性を具備しているので、
二次覆工コンクリートの打設により圧力がかかってもつ
ぶれて網目が縮小するようなこともなく、良好な通水性
を確保する。A large number of linear bodies intersect with each other and extend from one side to the other while changing direction irregularly in the horizontal and thickness directions, and these many continuous linear bodies intersect with each other at least in part at each intersection. Since it is a relatively large mesh sheet with bonded undulating irregularities, even if the spring water flowing inside the mesh (in the voids of the mesh) is accompanied by a considerable amount of sediment, it will not become clogged with sediment. This allows sediment to be discharged together with spring water without any formation. Moreover, in this case, since the mesh body 4 has good shape retention and rigidity,
Even when pressure is applied by placing secondary lining concrete, the mesh does not collapse or shrink, ensuring good water permeability.
従って、この防水シートは長期に亘り優れた通水性能を
発揮する。Therefore, this waterproof sheet exhibits excellent water permeability over a long period of time.
しかも、緩衝性シート3の突起物に対する緩衝作用で不
透水性シート2が突起物によって破損されるのが防止さ
れるため、不透水性シート2による防水機能が破損され
ず、その機能を確実に発揮する。Moreover, the buffering effect of the cushioning sheet 3 against the protrusions prevents the water-impermeable sheet 2 from being damaged by the protrusions, so the waterproof function of the water-impermeable sheet 2 is not damaged and its function is ensured. Demonstrate.
なお1本発明は上述した実施例に制限されるものではな
く、例えば不透水性シートとして一面側に多数の突条が
形成されたものを使用したり、緩衝性シートや網状体を
波状に積層したりなど1本発明の要旨の範囲内で種々変
更することができる6見匪玖肱来
以上説明したように、本発明の防水シートによれば、多
数の線状体が相互に交差しながら水平方向ならびに厚み
方向に不規則に方向を変えて一方から他方に延びており
、これら多数の連続線状体が各々の交差点で少なくとも
一部で相互に接着したうねり状凹凸を有するシート状網
状体を形成しており、該網状体を緩衝性シートの一面の
少なくとも一部に積層するとともに、該緩衝性シートの
他方の面で不透水性シートを積層したことにより、土砂
の多い排水をも目詰りすることなく確実に排出すること
ができ、長期間に亘る流水性能が良好に保障されると共
に、緩衝性シートの緩衝効果によりトンネル工事に際し
て突起物に対して不透水性シートを確実に保護し、永続
的な使用を可能とするもので、このためトンネル等の土
木工事用防水シートとして好適に用いられる。Note that the present invention is not limited to the above-described embodiments; for example, a water-impermeable sheet with many protrusions formed on one side may be used, or a cushioning sheet or a net-like material may be laminated in a wavy manner. As explained above, according to the waterproof sheet of the present invention, a large number of linear bodies intersect with each other and A sheet-like net-like body that extends from one side to the other while changing directions irregularly in the horizontal direction and the thickness direction, and has undulations and convexities in which a large number of continuous linear bodies are bonded to each other at least in part at each intersection. By laminating the mesh on at least a part of one side of the cushioning sheet and laminating an impermeable sheet on the other side of the cushioning sheet, drainage with a lot of earth and sand can be avoided. Water can be discharged reliably without clogging, ensuring good water flow performance over a long period of time, and the buffering effect of the cushioning sheet ensures that the impermeable sheet is protected against protrusions during tunnel construction. , which enables permanent use, and is therefore suitable for use as a waterproof sheet for civil engineering works such as tunnels.
第1図は本発明の一実施例を示す一部省略断面図、第2
図は同側に用いる網状体の一部省略拡大平面図、第3図
は同網状体の一部省略拡大側面図、第4,5図はそれぞ
れ従来の防水シートを示す一部省略断面図である。
1・・・防水シート、2・・・不透水性シート、3・・
・緩衝性シート、4・・・網状体、5・・・線状体、6
・・・交差点、7・・・うねり状凹凸、8・・・網目。
代理人 弁理士 小 島 隆 同
第1図
第2図 、FIG. 1 is a partially omitted sectional view showing one embodiment of the present invention, and FIG.
The figure is a partially omitted enlarged plan view of the net-like body used on the same side, Figure 3 is a partially omitted enlarged side view of the same net-like body, and Figures 4 and 5 are partially omitted cross-sectional views showing conventional waterproof sheets. be. 1... Waterproof sheet, 2... Water impermeable sheet, 3...
- Cushioning sheet, 4... Reticular body, 5... Linear body, 6
...Intersection, 7...undulation-like unevenness, 8...mesh. Agent: Patent Attorney Takashi Kojima Figure 1, Figure 2,
Claims (1)
に厚み方向に不規則に方向を変えて一方から他方に延び
ており、これら多数の連続線状体が各々の交差点で少な
くとも一部で相互に接着したうねり状凹凸を有するシー
ト状網状体を形成しており、該網状体を緩衝性シートの
一面の少なくとも一部に積層すると共に、該緩衝性シー
トの他方の面に不透水性シートを積層してなることを特
徴とする防水シート。 2、線状体の太さが0.5〜3mmであり、シート状網
状体の網目の大きさが0.1〜20mmであり、かつ該
シート状網状体の高さが1〜30mmである特許請求の
範囲第1項記載の防水シート。[Claims] 1. A large number of linear bodies intersect with each other and extend from one side to the other while changing directions irregularly in the horizontal direction and the thickness direction, and each of these continuous linear bodies A sheet-like network body having undulating irregularities that are mutually adhered at least in part at intersections is formed, and the network body is laminated on at least a part of one side of the cushioning sheet, and the other side of the cushioning sheet is laminated. A waterproof sheet characterized by being made by laminating a water-impermeable sheet on its surface. 2. The thickness of the linear body is 0.5 to 3 mm, the mesh size of the sheet-like network is 0.1 to 20 mm, and the height of the sheet-like network is 1 to 30 mm. A waterproof sheet according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62152105A JP2517972B2 (en) | 1987-06-18 | 1987-06-18 | Waterproof sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62152105A JP2517972B2 (en) | 1987-06-18 | 1987-06-18 | Waterproof sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63315800A true JPS63315800A (en) | 1988-12-23 |
JP2517972B2 JP2517972B2 (en) | 1996-07-24 |
Family
ID=15533163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62152105A Expired - Fee Related JP2517972B2 (en) | 1987-06-18 | 1987-06-18 | Waterproof sheet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2517972B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05118196A (en) * | 1991-10-25 | 1993-05-14 | Daiwabo Create Kk | Drain material for tunnel covering water conveyance |
JP2013087492A (en) * | 2011-10-18 | 2013-05-13 | Daiwabo Holdings Co Ltd | Waterproof sheet |
JP6045739B1 (en) * | 2016-03-14 | 2016-12-14 | 東急建設株式会社 | Tunnel waterproof sheet and tunnel waterproof structure |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5137844U (en) * | 1974-09-12 | 1976-03-22 | ||
JPS59102699U (en) * | 1982-12-24 | 1984-07-10 | シ−アイ化成株式会社 | Water stop sheet for tunnel construction |
-
1987
- 1987-06-18 JP JP62152105A patent/JP2517972B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5137844U (en) * | 1974-09-12 | 1976-03-22 | ||
JPS59102699U (en) * | 1982-12-24 | 1984-07-10 | シ−アイ化成株式会社 | Water stop sheet for tunnel construction |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05118196A (en) * | 1991-10-25 | 1993-05-14 | Daiwabo Create Kk | Drain material for tunnel covering water conveyance |
JP2013087492A (en) * | 2011-10-18 | 2013-05-13 | Daiwabo Holdings Co Ltd | Waterproof sheet |
JP6045739B1 (en) * | 2016-03-14 | 2016-12-14 | 東急建設株式会社 | Tunnel waterproof sheet and tunnel waterproof structure |
Also Published As
Publication number | Publication date |
---|---|
JP2517972B2 (en) | 1996-07-24 |
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