JPH0764040B2 - Waterproof insulation on the tunnel surface - Google Patents
Waterproof insulation on the tunnel surfaceInfo
- Publication number
- JPH0764040B2 JPH0764040B2 JP61202638A JP20263886A JPH0764040B2 JP H0764040 B2 JPH0764040 B2 JP H0764040B2 JP 61202638 A JP61202638 A JP 61202638A JP 20263886 A JP20263886 A JP 20263886A JP H0764040 B2 JPH0764040 B2 JP H0764040B2
- Authority
- JP
- Japan
- Prior art keywords
- waterproof sheet
- waterproof
- tunnel
- woven fabric
- 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.)
- Expired - Lifetime
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】 ［技術分野］ 本発明は、トンネル表面の防水断熱構造に関するもので
あり、特に選ばれた防水シートを採用してトンネル表面
に防水性、耐寒性、言い換えれば断熱性を付与したもの
である。更に詳しくは、均質で他材料との接着性が良
く、熱によるたるみ発生を防止でき、現地での施工の工
数を削減できる防水シートを採用し、これと吹き付けに
よるいわゆる現場発泡による発泡ウレタン断熱層との一
体化に関するものである。Description: TECHNICAL FIELD The present invention relates to a waterproof and heat insulating structure for a tunnel surface, and in particular, it uses a selected waterproof sheet to provide the tunnel surface with waterproofness, cold resistance, in other words, heat insulation. It was given. More specifically, it uses a waterproof sheet that is homogeneous and has good adhesiveness to other materials, can prevent the occurrence of slack due to heat, and can reduce the number of on-site construction steps. It is about integration with.
［従来の技術］ トンネルの建設に際しては、出来上ったトンネルが堅牢
であることは勿論、防水性、耐寒性（断熱性）等に富ん
だものが望まれる。その理由としては、防水性がないと
トンネル上の岩や土から水がトンネル内に滲出、滴下す
るし、また防水性および耐寒性がないと、冬期、特に寒
冷地においては、前記のトンネル内に滲出した水が凍っ
てつららとなり、トンネル上壁から垂下して事故の原因
になるばかりでなく凍結によってトンネルに歪が生じ、
この歪は解凍しても全部は復元しないで残留するため、
長年月の間には大きく変形して損壊するに至るおそれが
ある。[Prior Art] When constructing a tunnel, it is desired that the completed tunnel not only be robust but also have excellent waterproofness and cold resistance (heat insulation). The reason for this is that if it is not waterproof, water will seep and drip into the tunnel from the rocks and soil on the tunnel, and if it is not waterproof and cold resistant, it will be used in the tunnel in winter, especially in cold regions. The water that has exuded into the ice freezes into icicles, drooping from the top wall of the tunnel and causing an accident, as well as causing distortion in the tunnel due to freezing.
Even if this distortion is thawed, the whole remains without being restored,
Over the years, it may be greatly deformed and damaged.
このため、従来、防水性、耐寒性、断熱性のあるトンネ
ルの建設工法について、種々の提案がされているが、あ
るものは工事が大がかりで膨大な費用を必要とするなど
問題点が多い。For this reason, various proposals have been made in the past regarding construction methods of tunnels having waterproofness, cold resistance, and heat insulation, but some of them have problems such as large-scale construction and enormous cost.
［目的］ 本発明は、このような従来の技術の問題点を解決すべ
く、均質で、他材料との接着性が良く、ウレタン発泡層
の吹き付け時に発生する熱によるたるみ発生を防止で
き、しかもこの吹き付け発泡ウレタン断熱層との一体化
が完全となり、現場での施工の工数を削減できるトンネ
ル表面の防水断熱構造を提供することを目的とするもの
である。[Objective] In order to solve the problems of the conventional techniques, the present invention is homogeneous, has good adhesiveness to other materials, and can prevent the occurrence of slack due to heat generated when the urethane foam layer is sprayed. It is an object of the present invention to provide a waterproof and heat insulating structure for a tunnel surface, which is completely integrated with the sprayed urethane foam heat insulating layer and which can reduce the number of construction steps on site.
［目的達成のための手段］ 本発明は、ゴムおよび／または合成樹脂を主体とする高
分子系シートを止水シートとし、該止水シートの一方面
に厚さ２〜10mmの不織布２を全面接着して一体化すると
共に、該止水シートの他方面に前記不織布２よりも厚さ
の薄い不織布４を部分接着または全面接着した防水シー
トにあって、不織布２側を、トンネル内の表面を覆工し
たコンクリート面に当接し、このコンクリート面に対し
不織布２のみを固定すると共に、隣接する止水シート端
を接着または熱融着させて接合し、かつ、不織布４面に
発泡性ウレタン系樹脂を吹き付け発泡して断熱層と吹織
布４とを一体化させたことを特徴とするトンネル表面の
防水断熱構造に係るものである。[Means for Achieving the Object] In the present invention, a polymer sheet mainly composed of rubber and / or a synthetic resin is used as a waterproof sheet, and a nonwoven fabric 2 having a thickness of 2 to 10 mm is entirely provided on one surface of the waterproof sheet. A waterproof sheet in which a non-woven fabric 4 having a thickness smaller than that of the non-woven fabric 2 is partially or entirely adhered to the other surface of the waterproof sheet while being adhered and integrated, and the non-woven fabric 2 side is provided on the inside surface of the tunnel. It abuts against the lining concrete surface, and only the nonwoven fabric 2 is fixed to this concrete surface, and adjacent water-stop sheet ends are bonded or heat-sealed together, and the foamed urethane resin is bonded to the nonwoven fabric 4 surface. The present invention relates to a waterproof heat insulating structure on a tunnel surface, characterized in that the heat insulating layer and the blown cloth 4 are integrated by spraying.
［作用］ 本発明にて採用された防水シートは、その使用される目
的により不織布の厚さを変えたものであり、不織布２の
厚さは２〜10mmで、しかも止水シートに対して全面が接
着されるものである。[Operation] The waterproof sheet adopted in the present invention is one in which the thickness of the non-woven fabric is changed according to the purpose for which it is used. Is to be bonded.
かかる不織布２は浸出する水の通水層となるために厚さ
の比較的厚いものが採用され、しかも、止水シートのた
るみを防止するためにこれ又厚さの厚いものが採用され
るものである。The non-woven fabric 2 having a relatively large thickness is used as a water-permeable layer for leaching water, and a thick one is also used to prevent the slack of the waterproof sheet. Is.
一方、不織布４の厚さは不織布２の厚さより薄いものと
している。これはその使用される目的によって異なり、
その表面にウレタン系樹脂が吹き付けられる不織布４に
あっては、この吹き付けられた発泡性ウレタン系樹脂を
止水シートに一体となって支持されるようにするもので
あり、その厚さは薄くてよく、しかも不織布４内を樹脂
が含浸して止水シートに達し易くする方が好ましい。On the other hand, the thickness of the non-woven fabric 4 is smaller than that of the non-woven fabric 2. This depends on its intended use,
In the non-woven fabric 4 on the surface of which the urethane resin is sprayed, the sprayed foamable urethane resin is integrally supported by the waterproof sheet, and its thickness is thin. It is preferable that the inside of the non-woven fabric 4 is impregnated with resin so that the non-woven fabric 4 can easily reach the waterproof sheet.
［実施例］ 以下図面を参照して、本発明のトンネル表面の防水断熱
構造を具体的に説明する。[Examples] With reference to the drawings, a waterproof and heat insulating structure for a tunnel surface of the present invention will be specifically described below.
第１図は本発明に用いられる防水シート単体を示す断面
図であり、第２図はその防水断熱構造の拡大断面図であ
る。FIG. 1 is a sectional view showing a waterproof sheet unit used in the present invention, and FIG. 2 is an enlarged sectional view of the waterproof and heat insulating structure.
第１図に示す本発明に用いられる防水シートは、ゴムお
よび／または合成樹脂を主体とする高分子系シートを止
水シート３としている。止水シート３は、水の透過を防
止するためのものであり、通常その厚さは0.4mmから3.0
mm程度のものが用いられる。The waterproof sheet used in the present invention shown in FIG. 1 is a waterproof sheet 3 which is a polymer sheet mainly composed of rubber and / or synthetic resin. The waterproof sheet 3 is for preventing the permeation of water, and its thickness is usually 0.4 mm to 3.0.
The thing of about mm is used.
そしてこの止水シート３の上面には厚い不織布２が全面
接着されており、止水シート３と一体化されている。厚
い不織布２は地山10から一次覆工（コンクリート面）20
を通して浸み出した水を逃がすための通水層の役目をは
たすためのものである。この止水シート３と厚い不織布
２とは全面接着して一体化させるが、その理由は止水シ
ート３に熱が加わった場合、止水シート３が伸びてたる
み発生しないように補強したものである。A thick non-woven fabric 2 is bonded to the entire upper surface of the water blocking sheet 3 and is integrated with the water blocking sheet 3. Thick non-woven fabric 2 is grounded 10 to primary lining (concrete surface) 20
It is to serve as an aquifer to escape the water that has leached through. The waterproof sheet 3 and the thick non-woven fabric 2 are adhered to each other to be integrated with each other, because the waterproof sheet 3 is reinforced so that the waterproof sheet 3 does not stretch and sag when heated. is there.
一方、止水シート３の下面には不織布２よりも薄い不織
布４が部分接着または全面接着されている。この薄い不
織布４は、発泡性ウレタン系樹脂を吹き付けた場合、こ
れによる断熱層30が不織布４と一体（不織布４内に含
浸）30aとなり、この接着を確保するためのものである
が、万一止水シートが破損した時でも、不織布４側に漏
れた水に対してこの不織布４が通水層となる役目をも果
たすことともなる。このトンネル表面に用いられる防水
シート１は、止水シートと不織布２、４との接着が工場
で大量になされるのでその品質は均質である。On the other hand, a nonwoven fabric 4 thinner than the nonwoven fabric 2 is partially or entirely bonded to the lower surface of the water blocking sheet 3. When the foamable urethane resin is sprayed onto the thin non-woven fabric 4, the resulting heat insulating layer 30 becomes integral with the non-woven fabric 4 (impregnated into the non-woven fabric 4) 30a, and is intended to secure this adhesion. Even when the water blocking sheet is damaged, the nonwoven fabric 4 also serves as a water-permeable layer for water leaking to the nonwoven fabric 4 side. The waterproof sheet 1 used on the surface of the tunnel has a uniform quality because a large amount of the waterproof sheet and the non-woven fabrics 2 and 4 are bonded in the factory.
第３は上記の防水シートを用いたトンネル表面の防水断
熱構造の断面を示した断面図である。The third is a cross-sectional view showing a cross section of a waterproof and heat insulating structure on a tunnel surface using the above waterproof sheet.
かかるトンネル表面の防水断熱構造の工法は次ぎのよう
に簡素化されることとなる。The method of constructing the waterproof and heat insulating structure on the surface of the tunnel will be simplified as follows.
（１）常法により一次覆工を施工する。(1) A primary lining is constructed by a conventional method.
（２）防水シートを一次覆工面に固定することにより通
水層及び止水層を形成する。(2) A water-permeable layer and a water-stop layer are formed by fixing the waterproof sheet to the primary lining surface.
（３）前記防水シートの上に発泡性ウレタン系樹脂を吹
き付けて断熱層を形成する。(3) A foaming urethane resin is sprayed on the waterproof sheet to form a heat insulating layer.
（４）前記断熱層上へ常法により二次覆工を施工する。(4) A secondary lining is constructed on the heat insulation layer by a conventional method.
図中、10は常法により略トンネル形状に堀削した地山で
あり、20はその表面に常法により施した一次覆工（コン
クリート）を示す。そして、このコンクリート20の表面
に上記した防水シート１を固定するのであるが、この場
合、厚い不織布２がコンクリート20の表面に接するよう
にして、コンクリートピン等で固定する。この場合、止
水シート３はコンクリートピンで貫通しないよう、厚い
不織布２と止水シート３との端部を剥いで不織布２のみ
をコンクリートピン21で固定する。止水シート３の剥さ
れた端部30は、隣接する止水シート３との間で接着また
は熱融着等により接合される。In the figure, 10 is a ground excavated into a substantially tunnel shape by a conventional method, and 20 is a primary lining (concrete) applied to the surface by a conventional method. Then, the waterproof sheet 1 is fixed to the surface of the concrete 20. In this case, the thick non-woven fabric 2 is brought into contact with the surface of the concrete 20 and fixed with concrete pins or the like. In this case, the waterproof sheet 3 is fixed by concrete pins 21 by stripping the ends of the thick nonwoven fabric 2 and the waterproof sheet 3 so that the waterproof sheet 3 is not penetrated by the concrete pins. End 3 0 was stripped of water stopping sheet 3 is bonded by adhesion or heat fusion or the like between the waterproofing sheet 3 adjacent.
このようにしてコンクリート20の表面全面に防水シート
１が順次取り付けられ、この防水シート１の取り付け完
了後、防水シート１の薄い不織布４の表面に発泡性ウレ
タン系樹脂を吹き付けて断熱層30を構成する。この吹き
付けによる発泡ウレタン系断熱層30は、通常10mmから10
0mmの厚さが好ましい。吹き付けられた発泡性ウレタン
系樹脂は、不織布４上にて発泡を開始するが、その一部
は不織布４内に含浸30aすることにより強固に一体化が
進むことになる。発泡性ウレタン系樹脂の吹きつけ作業
終了後、その上に常法により二次覆工40を施すことによ
りトンネルが完成する。In this way, the waterproof sheet 1 is sequentially attached to the entire surface of the concrete 20, and after the attachment of the waterproof sheet 1 is completed, a foaming urethane resin is sprayed on the surface of the thin nonwoven fabric 4 of the waterproof sheet 1 to form the heat insulating layer 30. To do. The urethane foam insulation layer 30 formed by this spray is usually 10 mm to 10 mm.
A thickness of 0 mm is preferred. The foamable urethane-based resin that has been sprayed starts to foam on the non-woven fabric 4, and a part of the resin is impregnated into the non-woven fabric 4 to promote solid integration. After the blowing urethane foam resin has been sprayed, a secondary lining 40 is applied on the tunnel to complete the tunnel.
以上のように、本発明によってトンネル表面に形成され
た防水断熱構造にあっては、厚い不織布２は通水層を形
成し、止水シート３は止水層を形成する。又、薄い不織
布４は、発泡ウレタン系樹脂層との接着層を形成し、か
かる発泡ウレタン系樹脂層が断熱層30を形成する。As described above, in the waterproof and heat insulating structure formed on the tunnel surface according to the present invention, the thick non-woven fabric 2 forms the water permeable layer and the water blocking sheet 3 forms the water blocking layer. The thin non-woven fabric 4 forms an adhesive layer with the urethane foam resin layer, and the urethane foam resin layer forms the heat insulating layer 30.
［効果］ 以上の説明から明らかなごとく、本発明の防水断熱構造
によれば、吹き付けによる断熱層と防水シートとの接着
性が向上し、かつ、断熱層の発泡時の発熱によっても不
織布２と止水シート３とが全面接着しているためたるみ
の発生がないすぐれたものとなった。そして、用いられ
る防水シートにあっては、工場で大量に製造されるため
その品質が均質でありその取扱が簡単なものとなった。[Effect] As is apparent from the above description, according to the waterproof heat insulating structure of the present invention, the adhesiveness between the heat insulating layer and the waterproof sheet by spraying is improved, and the nonwoven fabric 2 is also formed by the heat generated when the heat insulating layer is foamed. Since the entire surface of the water blocking sheet 3 was adhered, it was an excellent one with no slack. Since the waterproof sheet used is manufactured in large quantities in a factory, its quality is uniform and its handling is easy.
本発明のトンネル用防水シートを用いれば、トンネル工
事現場での作業性にすぐれたものとなった。そして、現
場での施工工程数が大幅に削減できるので、工事が簡素
化でき費用も大幅に削減でき、かつ、工期も短期間にで
きる等そのメリットは大きい。By using the tunnel waterproof sheet of the present invention, the workability at the tunnel construction site was excellent. Since the number of construction steps on site can be greatly reduced, the construction can be simplified and the cost can be greatly reduced, and the construction period can be shortened, which is a great advantage.
第１図は本発明のトンネル用防水シートを示す断面図、
第２図は防水断熱構造の拡大断面図、第３図は本発明の
トンネル表面の防水断熱構造の断面図である。 １……防水シート、 ２……厚い不織布、 ３……止水シート、 ４……薄い不織布、 10……地山、 20……一次覆工、 21……コンクリートピン、 30……断熱層、 40……二次覆工。FIG. 1 is a sectional view showing a waterproof sheet for tunnel of the present invention,
FIG. 2 is an enlarged sectional view of the waterproof and heat insulating structure, and FIG. 3 is a sectional view of the waterproof and heat insulating structure on the tunnel surface of the present invention. 1 ... Waterproof sheet, 2 ... Thick non-woven fabric, 3 ... Waterproof sheet, 4 ... Thin non-woven fabric, 10 ... Round ground, 20 ... Primary lining, 21 ... Concrete pin, 30 ... Heat insulation layer, 40 …… Secondary lining.
Claims (1)
高分子系シートを止水シートとし、該止水シートの一方
面に厚さ２〜10mmの不織布２を全面接着して一体化する
と共に、該止水シートの他方面に前記不織布２よりも厚
さの薄い不織布４を部分接着または全面接着した防水シ
ートにあって、不織布２側を、トンネル内の表面を覆工
したコンクリート面に当接し、このコンクリート面に対
し不織布２のみを固定すると共に、隣接する止水シート
端を接着または熱融着させて接合し、かつ、不織布４面
に発泡性ウレタン系樹脂を吹き付け、これを発泡して断
熱層と不織布４とを一体化させたことを特徴とするトン
ネル表面の防水断熱構造。1. A polymer sheet mainly composed of rubber and / or synthetic resin is used as a waterproof sheet, and a nonwoven fabric 2 having a thickness of 2 to 10 mm is entirely adhered to one surface of the waterproof sheet for integration. In a waterproof sheet in which a non-woven fabric 4 having a thickness smaller than that of the non-woven fabric 2 is partially or entirely adhered to the other surface of the waterproof sheet, the non-woven fabric 2 side is applied to a concrete surface lining the surface in the tunnel. In contact with the concrete surface, only the nonwoven fabric 2 is fixed, and adjacent water-stop sheet ends are bonded or bonded by heat fusion, and a foaming urethane resin is sprayed on the nonwoven fabric 4 surface to foam it. A waterproof insulation structure on the surface of the tunnel, characterized in that the heat insulation layer and the nonwoven fabric 4 are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61202638A JPH0764040B2 (en) | 1986-08-30 | 1986-08-30 | Waterproof insulation on the tunnel surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61202638A JPH0764040B2 (en) | 1986-08-30 | 1986-08-30 | Waterproof insulation on the tunnel surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6359532A JPS6359532A (en) | 1988-03-15 |
| JPH0764040B2 true JPH0764040B2 (en) | 1995-07-12 |
Family
ID=16460651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61202638A Expired - Lifetime JPH0764040B2 (en) | 1986-08-30 | 1986-08-30 | Waterproof insulation on the tunnel surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0764040B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3248738B2 (en) * | 1991-09-24 | 2002-01-21 | ビュファ・コンクリートプロテクシーヨン・ジャパン株式会社 | Concrete construction with waterproof construction |
| JP3200985B2 (en) * | 1992-07-06 | 2001-08-20 | 藤森工業株式会社 | Waterproof sheet for thermal insulation and waterproofing and method for thermal insulation and waterproofing |
| JPH06288198A (en) * | 1993-03-31 | 1994-10-11 | Bridgestone Corp | Tunnel structure at cold district |
| JPH07266502A (en) * | 1994-03-29 | 1995-10-17 | Asahi Glass Co Ltd | Composite rubber sheet and composite waterproofing construction method |
| JP2018199982A (en) * | 2017-05-30 | 2018-12-20 | 藤森工業株式会社 | Waterproof sheet for tunnel |
| JP7270519B2 (en) * | 2019-10-09 | 2023-05-10 | 藤森工業株式会社 | Tunnel tarpaulin |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5415070A (en) * | 1977-07-04 | 1979-02-03 | Kajikawa Akira | Water proof shee covered with nonwoven fabric |
| JPS5811141A (en) * | 1981-07-15 | 1983-01-21 | 三井東圧化学株式会社 | Composite waterproof sheet |
-
1986
- 1986-08-30 JP JP61202638A patent/JPH0764040B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6359532A (en) | 1988-03-15 |
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