JPH0762439B2 - Water stop structure for tunnel - Google Patents
Water stop structure for tunnelInfo
- Publication number
- JPH0762439B2 JPH0762439B2 JP62155407A JP15540787A JPH0762439B2 JP H0762439 B2 JPH0762439 B2 JP H0762439B2 JP 62155407 A JP62155407 A JP 62155407A JP 15540787 A JP15540787 A JP 15540787A JP H0762439 B2 JPH0762439 B2 JP H0762439B2
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- waterproof sheet
- guides
- guide
- ground
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、トンネル掘穿坑道の地山からの湧水を、坑
道の側底に集排水させるための防水シートを地山側面に
張設させるトンネル用止水構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a waterproof sheet for collecting and draining spring water from the ground of a tunnel excavation tunnel on the side surface of the tunnel. It relates to a waterproof structure for tunnels.
〔従来の技術〕 一般にトンネル坑道は、第６図に示すように、岩盤２に
一次コンクリート３を吹付けてなる坑道４の地山側面
に、集排水用の防水シート１を張設させ、この防水シー
ト１上に二次コンクリート14を覆工させて、地山からの
漏水を防水シート１によって集排水し、坑道４の側底に
流すことによってトンネル坑道の止水及び二次コンクリ
ートに生ずるクラックを防止していた。[Prior Art] Generally, as shown in FIG. 6, in a tunnel tunnel, a waterproof sheet 1 for collecting and draining is stretched on the rock side of a tunnel 4 formed by spraying a primary concrete 3 on a rock bed 2. The secondary concrete 14 is lined on the waterproof sheet 1, and the leaked water from the natural ground is collected and drained by the waterproof sheet 1 and is flowed to the side bottom of the tunnel 4 to stop the water in the tunnel and the crack generated in the secondary concrete. Was prevented.
この防止シート１は、第７図に示すように幅１〜1.5メ
ートルのものをトンネル周方向に展張し、地山の凹凸に
馴ませるため適当の弛みを持たせて、防水シート１の幅
方向の端部に帯鉄15を当てがい、コンクリート釘16等を
打ち込んで取り付けていた。As shown in FIG. 7, the preventive sheet 1 is stretched in the circumferential direction of the tunnel with a width of 1 to 1.5 meters and has an appropriate slack in order to conform to the unevenness of the ground, and the waterproof sheet 1 in the width direction. Band iron 15 was applied to the end of, and concrete nails 16 etc. were hammered in and attached.
しかしながら、上記の方法では、防水シート１の幅方向
（トンネル方向）においては弛みを持たせ易いが、防水
シート１の長さ方向（トンネル周方向）に弛みを持たせ
て施工することは困難であるため、防水シート施工後の
二次覆工コンクリート打設時の荷重により、防水シート
１がトンネル周方向に引張られ、地山の凹凸に馴まなく
強いては防水シートの破損につながる危険性がある。ま
た、この方法では地山に展設した防水シート１の表側
（トンネルの内面側）より帯鉄15を当接しておきコンク
リート釘16等を打ち込むため、防水シート７にピン穴が
明けられるので水漏れの発生することが多く、更に、防
水シート１が１〜1.5mの小幅物を取り付けるため、隣接
する防止シート13を互にオーバーラップさせるが、隣接
シートとの付け合せ部分に別の防水シートを溶着しなけ
ればならず、煩雑な加工行程を必要とするなど、多くの
問題点があった。However, with the above method, although it is easy to give slack in the width direction of the waterproof sheet 1 (tunnel direction), it is difficult to construct with the slack in the length direction of the waterproof sheet 1 (tunnel circumferential direction). Therefore, the waterproof sheet 1 is pulled in the circumferential direction of the tunnel due to the load when the secondary lining concrete is placed after the waterproof sheet is installed, and there is a risk that the waterproof sheet will be damaged if it does not adjust to the unevenness of the ground. is there. Further, in this method, since the band iron 15 is abutted from the front side (inner surface side of the tunnel) of the waterproof sheet 1 installed in the natural ground and the concrete nails 16 are driven in, the waterproof sheet 7 has a pin hole, so that water cannot be formed. Leakage often occurs, and since the waterproof sheet 1 attaches a narrow object of 1 to 1.5 m, the adjacent preventive sheets 13 are overlapped with each other, but another waterproof sheet is attached to the joint portion with the adjacent sheet. There are many problems such as the necessity of welding and the need for complicated processing steps.
この発明は以上の点に鑑みてなしたもので、上記防水シ
ートの張設が容易で、しかも防水シートの破損及びクラ
ックの発生及び漏水のないトンネル用止水構造を提供す
ることを目的としている。The present invention has been made in view of the above points, and an object of the present invention is to provide a waterproof structure for a tunnel in which the waterproof sheet can be easily stretched and in which damage and cracks of the waterproof sheet do not occur and water does not leak. .
次に、この発明を、実施例に対応する第１図を参照して
説明する。すなわちこの発明は、地山側面のトンネル方
向に沿って平行に、且つトンネル周方向に所定間隔を置
いて設けた複数条の長手材よりなるガイドG1，G2・・・
と、トンネルの地山側面を覆うとともに裏側に前記ガイ
ドに摺動自在に係止される複数個の吊り具S1，S2，S3・
・・を設けた防水シート１と、よりなるトンネル用止水
構造をその手段とするものである。Next, the present invention will be described with reference to FIG. 1 corresponding to the embodiment. That is, according to the present invention, the guides G 1 , G 2, ... Consisting of a plurality of long members provided in parallel with each other along the tunnel direction on the side surface of the natural ground and at predetermined intervals in the tunnel circumferential direction.
When a plurality of hanger S 1 sliding is freely engaged with the guide on the rear side covers the natural ground side of the tunnel, S 2, S 3 ·
The waterproofing structure for tunnels including the waterproof sheet 1 provided with ..
前記の手段により、防水シート１の吊り具S1，S2，S3・
・・を、それぞれガイドG1，G2・・・に摺動可能に取り
付けることにより、地山の内側に第１図に示すような防
水シート覆が形成される。この防水シート１は、ガイド
G1，G2，G3・・・の一部にトンネル方向に折り畳んた状
態で係止し、左右に摺動させることによりガイドされ、
地山側面に展張され又は坑道内の任意の位置に移動され
て展張される。このようにしたので、防水シート１はト
ンネル方向にどのように長く作製されたものでも、防水
シート１の吊り具S1，S2，S3，・・・をガイドG1，G2，
G3，・・・に係止させるだけで展設が可能であるばかり
か、防水シート１が長尺物であれば重覆部は少なくな
り、地山からの湧き水を漏れなく集排出することができ
る。By the above-mentioned means, the suspenders S 1 , S 2 , S 3 for the waterproof sheet 1
.. are slidably attached to the guides G 1 , G 2, ..., respectively, whereby a waterproof sheet cover as shown in FIG. 1 is formed inside the natural ground. This waterproof sheet 1 is a guide
G 1, G 2, G 3 in a part of ... locked in a state of folded tunnel direction, guided by sliding to the left and right,
It is stretched on the side of the natural ground or moved to any position in the gallery and stretched. Since this is done, no matter how long the waterproof sheet 1 is made in the tunnel direction, the suspenders S 1 , S 2 , S 3 , ... Of the waterproof sheet 1 are guided by the guides G 1 , G 2 ,.
Not only can it be installed just by locking it to G 3 , ..., but if the waterproof sheet 1 is a long one, the heavy cover part will be reduced, and the spring water from the ground will be collected and discharged without leakage. You can
また防水シート１は、その各部が複数条のガイドに支持
されているところからその重力が平均して支持され、ま
たトンネル方向のみならばトンネル周方向に弛みを持た
せて展設することが可能である。In addition, the waterproof sheet 1 is supported by an average of its gravity because each part is supported by a plurality of guides, and can be installed with a slack in the tunnel circumferential direction only in the tunnel direction. Is.
以下、図面に基づいて本発明の一実施例を説明する。第
１図乃至第４図は、本発明の第１図の実施例を示してお
り、第１図は同トンネル用止水構造の一部断面斜視図、
第２図はガイドの斜視図、第３図は第２図のガイドに取
り付けられる留め具の斜視図、第４図は防水シートの裏
側に固着される吊り具Ｓの外観斜視図である。図におい
て１は防水しーと、２は堀穿されたトンネルの岩盤、３
は岩盤２上に吹き付けられた一次コンクリートの層、４
は一次コンクリート層３により形成された坑道である。An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show an embodiment of FIG. 1 of the present invention, and FIG. 1 is a partial sectional perspective view of the tunnel water blocking structure,
2 is a perspective view of a guide, FIG. 3 is a perspective view of a fastener attached to the guide of FIG. 2, and FIG. 4 is an external perspective view of a suspender S fixed to the back side of a waterproof sheet. In the figure, 1 is waterproof, 2 is the rock bed of the excavated tunnel, 3
Is a layer of primary concrete sprayed onto bedrock 2, 4
Is a tunnel formed by the primary concrete layer 3.
防水シート１は第１図に示すように、軟質樹脂あるいは
ゴム製遮水シートで裏側（地山側）には伸張性を有する
通水性緩衝層５としてループ起毛された編識層が設けて
ある。この防水シート１の裏側には所定の間隔（防水シ
ートの弛みに応じた間隔）で後述する吊り具S1，S2，
S3，・・・が取り付けられている。As shown in FIG. 1, the waterproof sheet 1 is a water-permeable sheet made of soft resin or rubber, and a loop-raised knitting layer is provided on the back side (ground side) as a water-permeable buffer layer 5 having stretchability. On the back side of the waterproof sheet 1, suspenders S 1 , S 2 , which will be described later, are arranged at a predetermined interval (an interval corresponding to the looseness of the waterproof sheet).
S 3 , ... are attached.
坑道４は岩盤２に掘穿されたもので、掘穿された岩盤２
の表面には一次コンクリート層３が吹き付けられ、岩盤
２の崩れや湧水を一次的に阻止するようにしてある。こ
の一次コンクリート層３でアーチ形に形成された坑道４
の壁面となる地山には、所定の間隔を置いてトンネル方
向に平行にガイドG1，G2，・・・が固定される。尚岩盤
２の面にガイドを固定しても良い。The mineway 4 was excavated in the bedrock 2, and the bedrock 2 was dug
A primary concrete layer 3 is sprayed on the surface of the rock so as to temporarily prevent collapse of the bedrock 2 and spring water. An archway 4 formed in an arch shape with this primary concrete layer 3
The guides G 1 , G 2 , ... Are fixed in parallel to the tunnel direction at a predetermined interval on the ground that is the wall surface of the. The guide may be fixed to the surface of the bedrock 2.
ガイドＧは第２図に示すように、断面Ｃ字型に形成され
た長手材で、長手方向の所定間隔には取付孔６・・・が
設けてあり、図示しないコンクリート釘にて地山側に取
り付けられる。この取付けに際してトンネル方向には平
行で、トンネル周方向では垂下する防水シート１の重さ
と、展設したときの防水シート１の弛みを考慮に入れて
複数条のガイドG1，G2・・・が取り付けられる。これら
のガイドG1，G2・・・の溝部７内には留め具Ｔが１本の
ガイドG1にそれぞれ複数個宛取り付けられるようになっ
ている。As shown in FIG. 2, the guide G is a longitudinal member having a C-shaped cross section, and mounting holes 6 ... Are provided at predetermined intervals in the longitudinal direction. It is attached. In this installation, multiple guides G 1 , G 2 ... In consideration of the weight of the waterproof sheet 1 that is parallel to the tunnel direction and hangs down in the tunnel circumferential direction and the slack of the waterproof sheet 1 when it is installed. Is attached. A plurality of fasteners T are attached to one guide G 1 in the groove 7 of these guides G 1 , G 2, ...
留め具Ｔは円筒状の本体部８と本体部８の一端面上に設
けられたフック部９とにより形成されており、本体部８
の円筒面には前記ガイドＧの溝部７に係合する段差10が
設けてある。フック部９には本体部８の端面上に突出し
ており、突出部分には係止孔11が設けてある。この係止
孔11には吊り具５が係止されるようになっている。The fastener T is formed by a cylindrical body portion 8 and a hook portion 9 provided on one end surface of the body portion 8.
A step 10 is formed on the cylindrical surface of the guide G so as to engage with the groove 7 of the guide G. The hook portion 9 is projected on the end surface of the main body portion 8, and a locking hole 11 is provided in the protruding portion. The hanger 5 is locked in the locking hole 11.
吊り具５は平板状の平面部12の中央に突出した略円形に
近い鍵部13を有するもので、平面部12の裏面側を防水シ
ート１に貼着し、鍵部13を前記留め具Ｔのフック部９に
係止することにより、防水シート１は留め具Ｔに係止さ
れてガイドＧにガイドされ移動することができる。The suspending tool 5 has a substantially circular key portion 13 protruding in the center of a flat plate-shaped flat portion 12, and the back surface side of the flat portion 12 is attached to the waterproof sheet 1, and the key portion 13 is fixed to the fastener T. When the waterproof sheet 1 is locked to the hook portion 9, the waterproof sheet 1 can be moved by being locked by the fastener T and guided by the guide G.
上述の構成により、予め防水シート１の裏側にガイドＧ
1，G2・・・の間隔に応じて吊り具S1，S2，S3・・・を
溶着等により固設し、ガイドＧ1，G2，・・・に取り付
けられた留め具T1，T2，T3・・・のフック部９に吊り具
５の鍵部13を順次係止しながら、防水シート１をトンネ
ル方向に移動することにより、防水シート１は一次コン
クリート層３の地山内側に弛みをもって展設することが
容易である。このとき、防水シート１はトンネル周方向
の幅を有するものであればトンネル方向はどのように長
いものであっても簡単に張設することが可能である。With the above configuration, the guide G is previously provided on the back side of the waterproof sheet 1.
1, G 2 a ... hanger S 1 in accordance with the intervals of, S 2, S 3 ... fixedly by welding or the like, the guide G 1, G 2, fasteners T attached to ... By moving the waterproof sheet 1 in the tunnel direction while sequentially locking the key portions 13 of the hangings 5 to the hook portions 9 of 1 , T 2 , T 3, ... It is easy to set up inside the natural ground with some slack. At this time, as long as the waterproof sheet 1 has a width in the tunnel circumferential direction, it is possible to easily stretch the waterproof sheet 1 no matter how long it is in the tunnel direction.
このように、地山の内側に防水シート１を設け、その内
側に二次コンクリートを設けることにより、第６図に示
すように、地山からの湧水を止水することができる。In this way, by providing the waterproof sheet 1 inside the natural ground and providing the secondary concrete inside the natural ground, as shown in FIG. 6, the spring water from the natural ground can be stopped.
第５図は、本発明の第２の実施例を示しており、この実
施例では、ガイドG1，・・・をケーブル状、棒状又はパ
イプ状とし、これに防水シート１裏面のフック状吊り具
S1，・・・を直接係合したものである。FIG. 5 shows a second embodiment of the present invention. In this embodiment, the guides G 1 , ... Are made into a cable shape, a rod shape or a pipe shape, on which the hook-shaped suspension on the back surface of the waterproof sheet 1 is applied. Ingredient
S 1, are those that directly engages the ....
この発明にかかるトンネル掘穿坑道の地山がわ面に防水
シートを張設させるトンネル用止水構造によれば、地山
がわ面のトンネル方向に沿って平行に且つトンネル周方
向に所定間隔を置いて複数条のガイドを設け、このガイ
ドに防水シートの裏側に設けた複数個の吊り具を摺動自
在に係止させるようにしたので、防水シートを上記吊り
具を介して上記ガイドに対し押し又は引き出すだけの摺
動作業により防水シートをトンネルの地山がわ面に展設
させることが出来、該展設作業が極めて能率的であり、
また、上記の押し又は引き出し長さを適宜張設させるこ
とによりトンネル方向における防水シートの弛み量も自
在に設定できるという優れた効果がある。また、トンネ
ル方向に長い防水シートを使用することが出来、さら
に、防水シート面に取付用の孔を設ける必要もない。According to the tunnel water stop structure in which the waterproof sheet is stretched on the ground surface of the tunnel excavation road according to the present invention, the ground material is parallel to the ground surface in the tunnel direction and at a predetermined interval in the tunnel circumferential direction. Is provided with a plurality of guides, and a plurality of suspenders provided on the back side of the waterproof sheet are slidably locked to the guides. The waterproof sheet can be installed on the ground surface of the tunnel by sliding work that only pushes or pulls it out, and the installation work is extremely efficient.
Further, there is an excellent effect that the amount of slack of the waterproof sheet in the tunnel direction can be freely set by appropriately stretching the pushing or pulling length. Further, a waterproof sheet that is long in the tunnel direction can be used, and it is not necessary to provide an attachment hole on the waterproof sheet surface.
従って、本発明によれば、防水シートの展設作業能率の
向上を図ることが出来且つ止水信頼性の向上に寄与する
大きな効果がある。Therefore, according to the present invention, there is a great effect that it is possible to improve the work efficiency of laying out the waterproof sheet and contribute to the improvement of the water stop reliability.
第１図は、本発明の第１の実施例であるトンネル用止水
構造の一部断面斜視図、第２図は、第１図に用いられる
ガイドの外観斜視図、第３図は、第２図のガイドに取り
付けられる留め具の外観斜視図、第４図は、第３図の留
め具に係止される吊り具の外観斜視図、第５図は、本発
明の第２の実施例であるトンネル用止水構造の一部断面
斜視図、第６図は、トンネルの完成正面断面図、第７図
は従来技術の断面図である。 １……防水シート,4……坑道,G……ガイド，S1……吊り
具。FIG. 1 is a partial cross-sectional perspective view of a tunnel water blocking structure according to a first embodiment of the present invention, FIG. 2 is an external perspective view of a guide used in FIG. 1, and FIG. 2 is an external perspective view of a fastener attached to the guide of FIG. 2, FIG. 4 is an external perspective view of a suspender locked to the fastener of FIG. 3, and FIG. 5 is a second embodiment of the present invention. FIG. 6 is a partial cross-sectional perspective view of the water blocking structure for a tunnel, FIG. 6 is a front cross-sectional view of a completed tunnel, and FIG. 7 is a cross-sectional view of a conventional technique. 1 …… Waterproof sheet, 4 …… Mineway, G …… Guide, S 1 …… Hanger.
Claims (1)
を張設させるトンネル用止水構造において、 前記地山側面のトンネル方向に沿って平行に、且つトン
ネル周方向に所定間隔を置いて設けた複数条の長手材よ
りなるガイドと、前記トンネルの地山側面を覆うととも
に裏側に前記ガイドに摺動自在に係止される複数個の吊
り具を設けた防水シートとを具備したことを特徴とする
トンネル用止水構造。1. A water blocking structure for a tunnel in which a waterproof sheet is stretched on a natural side surface of a tunnel excavation road, the parallel to the tunnel direction on the natural side surface, and at a predetermined interval in the tunnel circumferential direction. And a waterproof sheet provided with a plurality of guides made of longitudinal members and a plurality of suspenders that cover the ground side surfaces of the tunnel and are slidably locked to the guides on the back side. Characteristic water-stop structure for tunnels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62155407A JPH0762439B2 (en) | 1987-06-24 | 1987-06-24 | Water stop structure for tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62155407A JPH0762439B2 (en) | 1987-06-24 | 1987-06-24 | Water stop structure for tunnel |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPS641897A JPS641897A (en) | 1989-01-06 |
| JPH011897A JPH011897A (en) | 1989-01-06 |
| JPH0762439B2 true JPH0762439B2 (en) | 1995-07-05 |
Family
ID=15605305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62155407A Expired - Lifetime JPH0762439B2 (en) | 1987-06-24 | 1987-06-24 | Water stop structure for tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0762439B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0438400A (en) * | 1990-06-04 | 1992-02-07 | K F C:Kk | Method for preventing sagging of tunnel waterproof sheet |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018800B2 (en) * | 1979-04-16 | 1985-05-13 | 通研産業株式会社 | How to install tunnel water stop sheet |
| JPS57155498A (en) * | 1981-03-23 | 1982-09-25 | Kajima Corp | Method of protecting tail seal in method of construction of shielding excavation |
| JPS6213697A (en) * | 1985-07-10 | 1987-01-22 | 石川島播磨重工業株式会社 | Underground structure assembly method |
-
1987
- 1987-06-24 JP JP62155407A patent/JPH0762439B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS641897A (en) | 1989-01-06 |
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