JPH0624408Y2 - Tarpaulin for civil engineering - Google Patents
Tarpaulin for civil engineeringInfo
- Publication number
- JPH0624408Y2 JPH0624408Y2 JP1989061941U JP6194189U JPH0624408Y2 JP H0624408 Y2 JPH0624408 Y2 JP H0624408Y2 JP 1989061941 U JP1989061941 U JP 1989061941U JP 6194189 U JP6194189 U JP 6194189U JP H0624408 Y2 JPH0624408 Y2 JP H0624408Y2
- Authority
- JP
- Japan
- Prior art keywords
- check valve
- waterproof sheet
- holding member
- elastic holding
- mounting hole
- 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
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Revetment (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、護岸工事などの際に用いられる土木工事用防
水シートに関し、特に同シートに法面側から外部に排水
する逆止弁を設けたものの改良技術に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a waterproof sheet for civil engineering work used in revetment work, etc., and in particular, the sheet is provided with a check valve for draining from the slope side to the outside. It is related to the improvement technology of tamono.
［従来の技術］ この種の防水シートは、例えば、護岸工事で連節ブロッ
クやロックフイル層の裏込め材として用いられて、第４
図に示す如く川などの土手に形成された法面ｂに敷設さ
れ、この防水シートａ上にブロックｃを順次に敷き詰め
ることにより、ブロック目地から浸入する水を遮水する
とともに、ブロック目地などの間隙を経て土砂が流出し
たり、洗堀されることを防ぐ。防水シートａは、第５図
に示す如く遮水性の塩ビシートｄと、塩ビシートｄを保
護するフエルトｅおよびクロス材ｆを積層状に一体化し
た構成である。[Prior Art] This type of waterproof sheet is used, for example, as a backfill material for articulated blocks and rock-fill layers in revetment work.
As shown in the figure, it is laid on a slope b formed on a bank such as a river, and blocks c are sequentially laid on the waterproof sheet a to block water intruding from the block joints and to block the block joints. Prevents the sediment from flowing out or being scoured through the gap. As shown in FIG. 5, the waterproof sheet a has a structure in which a water-blocking vinyl chloride sheet d, a felt e for protecting the vinyl chloride sheet d, and a cloth material f are integrally laminated.
また、従来の防水シートａは、法面ｂ側への水の侵入を
遮水する手段としては優れているが、例えば、第４図の
矢印で示す如く豪雨などにより、土手から多量の雨水が
浸透したときに防水シートａの裏側に侵入した雨水が同
シートの裏面に沿って下降して、防水シートａの裏側で
土手の浸食が進み易く、この浸食によって防水シートａ
が破れたり、ブロックｃが崩れるなどして地盤の安定化
を損なうと言うこともあった。Further, the conventional waterproof sheet a is excellent as a means for blocking the intrusion of water on the slope b side, but, for example, as shown by the arrow in FIG. When the water penetrates, the rainwater that has entered the back side of the waterproof sheet a descends along the back surface of the sheet, and the erosion of the bank easily proceeds on the back side of the waterproof sheet a.
It was sometimes said that the ground was broken or the block c collapsed, impairing the stability of the ground.
そこで、このような不具合を解決する対策としては、第
６図に示す如くシートａに取付穴ｉを設け、取付穴ｉに
逆止弁ｊを嵌合するとともに、逆止弁ｊのフランジを接
着あるいは溶着固定して取付けていた。つまり、防水シ
ートａは遮水機能に加えて、逆止弁ｊを設けることによ
り、裏面側の水をシート表面側へ排水する機能を備えた
ものも知られている。Therefore, as a measure for solving such a problem, as shown in FIG. 6, a mounting hole i is provided in the seat a, a check valve j is fitted in the mounting hole i, and a flange of the check valve j is bonded. Or it was fixed by welding. In other words, it is known that the waterproof sheet a has a function of draining water on the back surface side to the seat surface side by providing the check valve j in addition to the water blocking function.
なお、このような、排水部構成の他の従来例には、実開
昭６１−１８８６２５号公報の如く、防水シートに小さ
な水抜き穴を設け、この水抜き穴に対応して防水シート
の表面側にハウジングとしての箱型部材に弁体を内蔵し
てなる逆止弁を取付けたものもある。In addition, in another conventional example of such a drainage structure, as in Japanese Utility Model Laid-Open No. 61-188625, a small water drain hole is provided in the waterproof sheet, and the surface of the waterproof sheet corresponds to the water drain hole. There is also one in which a check valve formed by incorporating a valve element into a box-shaped member as a housing is mounted on the side.
［考案が解決しようとする課題］ しかしながら、第６図のような従来構造では、逆止弁ｊ
が、防水シートａの製造過程である工場で装着されてい
たために、製品を筒状に巻き込む際に逆止弁ｊが邪魔に
なり、コンパクトに巻き込んで搬送や輸送することがで
きなかった。しかも、運搬時等に防水シートａを乱暴に
取り扱うと逆止弁ｊが外れてしまうと言う虞もあった。[Problems to be Solved by the Invention] However, in the conventional structure as shown in FIG. 6, the check valve j
However, since the waterproof sheet a was installed at the factory in the manufacturing process, the check valve j was an obstacle when the product was rolled into a tubular shape, and the product could not be compactly transported and transported. Moreover, if the waterproof sheet a is roughly handled during transportation, the check valve j may come off.
なお、逆止弁ｊは、防水シートａを法面ｂに敷設した後
に装着することも考えられるが、従来の取付構造では足
場の悪い工事現場等で取付けるとなると、作業が非常に
煩わしく現実的ではなかった。The check valve j may be mounted after laying the waterproof sheet a on the slope b, but if it is mounted at a construction site where the conventional mounting structure does not provide a good foothold, the work is very cumbersome and practical. Was not.
なお、実開昭６１−１８８６２５号の場合には、箱型部
材の取付けに際しては水抜き穴との相対的な位置だしを
行わなければならず作業性が悪い。また、箱型部材はシ
ート表面上にその底板部を接着するので接着時の位置ず
れとともに、設置状態においてシート表面に大きく張り
出しているため外部から荷重を受けて剥離し易く、逆止
弁を保護するために土砂などを逆止弁と同等な厚さまで
敷かなければならず、施工上の制約を受ける。In the case of Japanese Utility Model Laid-Open No. 61-188625, when the box-shaped member is attached, it is necessary to position the box-shaped member relative to the water drain hole, which is poor in workability. In addition, since the box-shaped member adheres its bottom plate to the seat surface, it is not only misaligned at the time of bonding, but also greatly protrudes to the seat surface in the installed state, so it is easily peeled off by receiving a load from the outside, protecting the check valve. In order to do so, earth and sand must be laid to a thickness equivalent to that of the check valve, which imposes restrictions on construction.
本考案は、このような事情に鑑みてなされたもので、工
事現場においても、逆止弁を簡単に装着可能とすること
で、運搬等の作業性を大きく向上した防水シートを提供
することを目的としている。The present invention has been made in view of the above circumstances, and it is possible to easily provide a check valve even at a construction site so as to provide a waterproof sheet with greatly improved workability such as transportation. Has an aim.
［課題を解決するための手段］ 上記目的を達成するために、本考案は、法面上に敷設さ
れるとともに、適位置に設けられた取付穴に裏面側から
表面側へ通水するためのハウジングに弁を内蔵した逆止
弁を取付けてなる防水シートにおいて、前記取付穴に一
体に装着されて、その内周部に挟持部を形成した略リン
グ状の弾性保持部材を有し、前記弾性保持部材の挟持部
に対して前記逆止弁をその外周をはめ込んで取付けるこ
とを要旨としている。[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is for laying on a slope and for passing water from the back surface side to the front surface side through mounting holes provided at appropriate positions. A waterproof sheet having a check valve with a built-in valve mounted in a housing, which has a substantially ring-shaped elastic holding member integrally mounted in the mounting hole and having a sandwiching portion formed on an inner peripheral portion thereof. The gist is that the check valve is attached to the holding portion of the holding member by fitting the outer periphery thereof.
［作用］ 以上構成によれば、防水シートの製造過程で弾性保持部
材を装着しておき、任意の場所で弾性保持部材の挟持部
に逆止弁を簡単に装着することが可能となる。[Operation] According to the above configuration, it is possible to mount the elastic holding member in the manufacturing process of the waterproof sheet and easily mount the check valve on the sandwiching portion of the elastic holding member at any place.
したがって、工事現場に搬入して法面に敷設した後、逆
止弁の取付操作を行うようにすれば、防水シートは逆止
弁を有しない従来のものと同様にコンパクトな筒状に巻
き込むことができ、運搬等の取扱が容易となる。Therefore, if the check valve is installed after it is carried to the construction site and laid on the slope, the waterproof sheet should be rolled into a compact tubular shape similar to the conventional one that does not have a check valve. This makes it easy to carry and handle.
［実施例］ 以下、本考案の一実施例を図面を参照しながら説明す
る。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
第１図は本考案を適用した土木工事用防水シートの使用
状態を示す断面模式図、第２図は同シートにおける逆止
弁の設定箇所を拡大して示す断面図、第３図は同平面図
である。FIG. 1 is a schematic sectional view showing a state of use of a waterproof sheet for civil engineering work to which the present invention is applied, FIG. 2 is an enlarged sectional view showing a setting position of a check valve in the sheet, and FIG. 3 is the same plane. It is a figure.
第１図において、川などの土手に形成された法面ｂは、
法面ｂ上に防水シート１が敷設されるとともに、その上
に連節用のブロックｋを順次敷き詰めることにより、地
盤の安定化が図られている。In Fig. 1, the slope b formed on the bank of a river is
The waterproof sheet 1 is laid on the slope b, and the blocks k for articulation are sequentially spread on the waterproof sheet 1 to stabilize the ground.
防水シート１は、塩ビシートなどの遮水層２、フェルト
などの緩衝層３とを一体化した構成となっており、遮水
層２の表面を緩衝層３により覆うことで、遮水層２を保
護するとともに、ブロックｋ等を安定設置することがで
きるようになっている。The waterproof sheet 1 has a structure in which a water blocking layer 2 such as a vinyl chloride sheet and a buffer layer 3 such as felt are integrated. By covering the surface of the water blocking layer 2 with the buffer layer 3, the water blocking layer 2 The block k and the like can be stably installed while protecting
また、防水シート１は、適宜間隔に設けられた取付穴４
を有し、各取付穴４に逆止弁５が弾性保持部材６を介し
て装着されており、法面ｂの水分をシート表面側へ排水
する機能を持つ。すなわち、例えば、豪雨等により雨水
が法面ｂ内に大量に浸透したとき、その雨水は防水シー
ト１の裏面に沿って下降しながら逆止弁５から効率よく
川に排水される。In addition, the waterproof sheet 1 has mounting holes 4 provided at appropriate intervals.
The check valve 5 is attached to each mounting hole 4 via the elastic holding member 6, and has a function of draining the water on the slope b to the seat surface side. That is, for example, when a large amount of rainwater permeates into the slope b due to heavy rain or the like, the rainwater is efficiently discharged to the river from the check valve 5 while descending along the back surface of the waterproof sheet 1.
次に、逆止弁５の取付構造について第２図，第３図に基
づいて説明する。Next, the mounting structure of the check valve 5 will be described with reference to FIGS. 2 and 3.
防水シート１には、同シートの製造過程で丸形の取付穴
４が形成されるとともに、取付穴４に弾性保持部材６が
装着される。A round mounting hole 4 is formed in the waterproof sheet 1 during the manufacturing process of the waterproof sheet 1, and an elastic holding member 6 is mounted in the mounting hole 4.
弾性保持部材６は、ゴム材等からなる全体として取付穴
４よりも大きなリング状をなしている。リング状の円部
断面は略Ｈ状に成形されており、Ｈ状の外側溝７によっ
て弾性保持部材６が取付穴４に装着されるよう設定され
ている。また、Ｈ状の内側溝８は、逆止弁５を押し込め
てその外周をはめ込む挟持部として機能する。The elastic holding member 6 is made of a rubber material or the like and has a ring shape larger than the mounting hole 4 as a whole. The ring-shaped circular section has a substantially H-shaped cross section, and the H-shaped outer groove 7 is set so that the elastic holding member 6 is mounted in the mounting hole 4. Further, the H-shaped inner groove 8 functions as a holding portion that pushes the check valve 5 and fits the outer periphery thereof.
つまり、弾性保持部材６は、取付穴４の周縁部を外周溝
７内に接着剤等を介してはめ込んで、強固に接着固定さ
れる。この場合、弾性保持部材６は取付穴４に弾性変形
しながら押し込まれるとともに、外周溝７内に取付穴４
の周縁部を嵌合したときに元の形状に復帰して、その状
態で接着される。That is, the elastic holding member 6 is firmly bonded and fixed by fitting the peripheral portion of the mounting hole 4 into the outer peripheral groove 7 via an adhesive or the like. In this case, the elastic holding member 6 is pushed into the mounting hole 4 while being elastically deformed, and the mounting hole 4 is inserted into the outer peripheral groove 7.
When the peripheral portions of the are fitted, they return to their original shapes and are bonded in that state.
そして、弾性保持部材６を装着した防水シート１は、弾
性保持部材６がリング状をなしていることに加え、比較
的容易に変形するので、コンパクトな筒状に巻いて搬送
することも可能であり、効率よく搬送あるいは輸送を行
なうことができる。The waterproof sheet 1 to which the elastic holding member 6 is attached has a ring-shaped elastic holding member 6 and is relatively easily deformed. Therefore, the waterproof sheet 1 can be wound in a compact tubular shape and conveyed. Therefore, it can be efficiently transported or transported.
また、弾性保持部材６を装着した防水シート１を法面ｂ
上に敷設した後、円盤状の逆止弁５を挟持部としての内
周溝８内にはめ込んで装着する。この操作は、前述と同
様に弾性保持部材６が比較的容易に変形するので、第２
図に示す如く逆止弁５を上側から押し込めることによ
り、逆止弁５が内周溝８に簡単に嵌入されて取付けられ
る。In addition, the waterproof sheet 1 having the elastic holding member 6 mounted thereon is sloped b.
After being laid on the top, the disc-shaped check valve 5 is fitted and mounted in the inner circumferential groove 8 as the holding portion. This operation causes the elastic holding member 6 to be deformed relatively easily as described above, so
As shown in the drawing, the check valve 5 is pushed in from the upper side, so that the check valve 5 is easily fitted into the inner circumferential groove 8 and attached.
なお、逆止弁５については詳細な説明を省略するが、ハ
ウジング５ａと、ハウジング５ａの内部に設けられる弁
５ｂ等を備えた周知構造のものを用いることができる。Although the detailed description of the check valve 5 is omitted, a well-known structure including the housing 5a and the valve 5b provided inside the housing 5a can be used.
このように弾性保持部材６を介して装着された逆止弁５
は、この上にブロックｋ等が位置したとしても直接にブ
ロック加重を受けないので、損傷も防止される。The check valve 5 thus mounted via the elastic holding member 6
Even if the block k or the like is located on the block, the block is not directly subjected to the weight of the block, so that the damage is also prevented.
なお、本考案は、弾性支持部材６の全体形状および弾性
保持部材６に設けられる挟持部の具体的形状としては、
実施例のものに限られるものではなく、種々変形できる
ものである。In the present invention, the overall shape of the elastic support member 6 and the specific shape of the holding portion provided on the elastic holding member 6 are as follows.
The present invention is not limited to the embodiment and can be variously modified.
［考案の効果］ 以上説明したように、本考案に係る土木工事用防水シー
トにあっては、防水シートの取付穴に装着された弾性保
持部材を介して逆止弁を取付けるようにしたので、工事
現場において逆止弁を簡単に取付操作することができ
る。[Advantages of the Invention] As described above, in the civil engineering waterproof sheet according to the present invention, the check valve is attached through the elastic holding member mounted in the attachment hole of the waterproof sheet. The check valve can be easily installed and operated at the construction site.
したがって、従来のように工事で逆止弁を取付けたもの
に対して、コンパクトな筒状に巻いた状態で搬送するこ
とができ、搬送作業および敷設作業を円滑に行うことが
できる。Therefore, it can be transported in a state of being wound in a compact tubular shape to a conventional one to which a check valve is attached by construction, and the transportation work and the laying work can be smoothly performed.
第１図は本考案の一実施例として示す土木工事用防水シ
ートの使用状態を示す概略断面図、第２は同シートの逆
止弁設定箇所を拡大して示す断面図、第３図は第２図の
Ａ矢視図、第４図は従来の土木工事用防水シートの一使
用例を示す概略断面図、第５図は同シートの構成を示す
断面図、第６図は同シートに設けられた排水部を示す断
面図である。 １……防水シート ４……取付穴 ５……逆止弁 ６……弾性保持部材 ７……外周溝 ８……内周溝（挟持部）FIG. 1 is a schematic sectional view showing a usage state of a waterproof sheet for civil engineering work as an embodiment of the present invention, FIG. 2 is an enlarged sectional view showing a check valve setting portion of the sheet, and FIG. Fig. 2 is a view taken in the direction of arrow A, Fig. 4 is a schematic sectional view showing an example of the use of a conventional waterproof sheet for civil engineering work, Fig. 5 is a sectional view showing the structure of the sheet, and Fig. 6 is provided on the sheet. It is sectional drawing which shows the drainage part. 1 ... Waterproof sheet 4 ... Mounting hole 5 ... Check valve 6 ... Elastic holding member 7 ... Outer circumferential groove 8 ... Inner circumferential groove (clamping part)
Claims (1)
けられた取付穴に裏面側から表面側へ通水するためのハ
ウジングに弁を内蔵した逆止弁を取付けてなる防水シー
トにおいて、 前記取付穴に一体に装着されて、その内周部に挟持部を
形成した略リング状の弾性保持部材を有し、前記弾性保
持部材の挟持部に対して前記逆止弁をその外周をはめ込
んで取付けることを特徴とする土木工事用防水シート。1. A waterproof sheet which is laid on a slope and has a check valve having a built-in valve in a housing for passing water from the rear surface to the front surface in a mounting hole provided at an appropriate position. A substantially ring-shaped elastic holding member that is integrally mounted in the mounting hole and has a holding portion formed on the inner peripheral portion thereof, and the check valve is attached to the holding portion of the elastic holding member at the outer periphery thereof. A waterproof sheet for civil engineering work that is fitted and installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989061941U JPH0624408Y2 (en) | 1989-05-30 | 1989-05-30 | Tarpaulin for civil engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989061941U JPH0624408Y2 (en) | 1989-05-30 | 1989-05-30 | Tarpaulin for civil engineering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH032021U JPH032021U (en) | 1991-01-10 |
| JPH0624408Y2 true JPH0624408Y2 (en) | 1994-06-29 |
Family
ID=31590646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989061941U Expired - Lifetime JPH0624408Y2 (en) | 1989-05-30 | 1989-05-30 | Tarpaulin for civil engineering |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624408Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5130605Y1 (en) * | 1969-05-08 | 1976-08-02 | ||
| JP6211982B2 (en) * | 2014-04-08 | 2017-10-11 | 株式会社田中 | Waterproof sheet |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS612188U (en) * | 1984-06-08 | 1986-01-08 | 有限会社 福士建設 | bathtub with lid |
| JPS61188625U (en) * | 1985-05-15 | 1986-11-25 |
-
1989
- 1989-05-30 JP JP1989061941U patent/JPH0624408Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH032021U (en) | 1991-01-10 |
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