JPH0524393B2 - - Google Patents
Info
- Publication number
- JPH0524393B2 JPH0524393B2 JP26811585A JP26811585A JPH0524393B2 JP H0524393 B2 JPH0524393 B2 JP H0524393B2 JP 26811585 A JP26811585 A JP 26811585A JP 26811585 A JP26811585 A JP 26811585A JP H0524393 B2 JPH0524393 B2 JP H0524393B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- pipe
- inner tube
- outer tube
- piping
- 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
- 125000006850 spacer group Chemical group 0.000 claims description 18
- 238000010276 construction Methods 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 7
- 239000008267 milk Substances 0.000 claims description 7
- 210000004080 milk Anatomy 0.000 claims description 7
- 235000013336 milk Nutrition 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000032683 aging Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Pipeline Systems (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、外管内に内管を挿入して順次接続す
る配管施工法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a piping construction method in which an inner pipe is inserted into an outer pipe and connected sequentially.
（従来技術およびその問題点）
従来、老朽化した上下水道、農業用水道等の既
設管を再生する場合には、老朽化した外管内に合
成樹脂管等の内管を挿入し、この内管に所定の勾
配をつけて順次接続した後、外管の内周面と内管
との間の空隙にセメントミルク等の充填材を充満
させる配管施工法が採用されている。(Prior art and its problems) Conventionally, when regenerating old existing pipes for water supply, sewerage, agricultural water, etc., an inner pipe such as a synthetic resin pipe is inserted into the aged outer pipe, and this inner pipe is A piping construction method has been adopted in which the pipes are sequentially connected at a predetermined slope, and then the gap between the inner peripheral surface of the outer pipe and the inner pipe is filled with a filler such as cement milk.
ところが、この施工法の場合には、外管と内管
との間の空隙にセメントミルク等の充填材を充満
させた際に、充填材の浮力等によつて内管が浮き
上がり、所定の勾配が得られないということがあ
つた。 However, in the case of this construction method, when the gap between the outer pipe and the inner pipe is filled with a filler such as cement milk, the inner pipe rises due to the buoyancy of the filler, and the predetermined slope is not reached. There were cases where I was unable to obtain the desired results.
そこで、本件出願人は先に特開昭54−116733号
公報において、外管内に内管を挿入して順次接続
した際に内管の上面にチユーブを這わせておき、
このチユーブ内にセメントミルク等を充填して内
管が浮き上がるのを防止してから、外管と内管と
の間の空隙に充填材を充満させる施工法を提案し
た。 Therefore, the present applicant previously proposed in Japanese Patent Application Laid-Open No. 54-116733 that when inserting an inner tube into an outer tube and sequentially connecting the inner tube, the tube was made to extend over the upper surface of the inner tube.
We proposed a construction method in which the tube is filled with cement milk or the like to prevent the inner tube from floating up, and then the gap between the outer tube and the inner tube is filled with filler.
この施工法は、内管の勾配を正確に取ることが
できるという点では極めて優れたものであつた
が、内管の上面にチユーブを這わせなければなら
ないので、この作業が面倒であるという施工上の
問題があつた。 Although this construction method was extremely superior in that it was possible to accurately measure the slope of the inner pipe, it was difficult to install because the tube had to be stretched over the top of the inner pipe. I had the above problem.
本発明は、かかる点を改善したものであつて、
現場での配管施工が簡単、かつ確実に行なえると
共に、内管の浮き上がりを確実に防止して所望と
する勾配が得られる配管施工法を提供するもので
ある。 The present invention improves these points, and includes:
To provide a piping construction method that allows piping construction to be easily and reliably performed on site, and also reliably prevents the inner pipe from floating up to obtain a desired slope.
（問題点を解決するための手段）
本発明は外管内に内管を順次挿入して配管接続
する際に、内管の端部外周面に複数個のスペーサ
を固着する。このスペーサは、内管を外管内に挿
入した際に外管の内周面にほぼ接する厚みに形成
しておく。(Means for Solving the Problems) According to the present invention, a plurality of spacers are fixed to the outer circumferential surface of the end portion of the inner tube when the inner tube is sequentially inserted into the outer tube and connected to the pipe. This spacer is formed to have a thickness that substantially contacts the inner circumferential surface of the outer tube when the inner tube is inserted into the outer tube.
次に、この内管を外管内に挿入して順次接続
し、端部外周面に固着したスペーサによつて内管
が浮き上がるのを防止してから、外管の内周面と
内管との間の空隙にセメントミルク等の充填材を
充満させることを特徴とするものである。 Next, this inner tube is inserted into the outer tube and connected in sequence, and after preventing the inner tube from floating up by the spacer fixed to the outer circumferential surface of the end, the inner circumferential surface of the outer tube and the inner tube are connected. This is characterized by filling the spaces between them with a filler such as cement milk.
以下、本発明の具体的構成を実施例に基づき、
詳細に説明する。 Hereinafter, the specific configuration of the present invention will be explained based on examples.
Explain in detail.
（実施例）
第１図は本発明の一実施例を示す縦断面図、第
２図は本発明で使用する内管の部分断面図であ
る。(Embodiment) FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and FIG. 2 is a partial sectional view of an inner tube used in the present invention.
図中符号１は鋳鉄管、コンクリート管等の老朽
化した外管であり、該外管１は一方のマンホール
M1から他方のマンホールM2まで所定の勾配をも
つて配管されている。２は塩化ビニル樹脂、ポリ
エチレン樹脂等の合成樹脂材からなる内管であ
り、該内管２は外管１内に挿入し得る外径を有
し、その一端部には拡径受口２０が設けられてい
る。３はスペーサである。 Reference numeral 1 in the figure is an aging outer pipe such as a cast iron pipe or concrete pipe, and the outer pipe 1 is located in one of the manholes.
Piping is provided from M 1 to the other manhole M 2 at a predetermined slope. Reference numeral 2 denotes an inner tube made of a synthetic resin material such as vinyl chloride resin or polyethylene resin, and the inner tube 2 has an outer diameter that allows it to be inserted into the outer tube 1, and has an enlarged diameter socket 20 at one end. It is provided. 3 is a spacer.
本発明では、外管１内に内管２を順次挿入して
配管接続する際に、内管２の拡径受口２０の外周
面にスペーサ３，３…を固着する。 In the present invention, when the inner tube 2 is sequentially inserted into the outer tube 1 and the piping is connected, spacers 3, 3, .
スペーサ３は塩化ビニール樹脂等の合成樹脂材
からなつており、本体部３０の一端部には鍔３１
が設けられている。このスペーサ３を拡径受口２
０の外周面に固着する場合、鍔３１を拡径受口２
０の端面に当接させ、本体部３０を拡径受口２０
の外周面に接着接合、あるいは溶着接合する。 The spacer 3 is made of a synthetic resin material such as vinyl chloride resin, and a flange 31 is provided at one end of the main body 30.
is provided. This spacer 3 is expanded into the diameter socket 2.
When fixing to the outer circumferential surface of
0, and the main body part 30 is brought into contact with the end face of the enlarged diameter socket 20.
Adhesive or welded to the outer circumferential surface of the
このとき、スペーサ３は拡径受口２０の外周面
に２個以上（好ましくは、３個以上）固着し、各
スペーサ３，３…の外面で形成する円周の外径ｄ
が外管１の内径Ｄより若干小さくなるように形成
する。また、スペーサ３の本体部３０の先・後外
面には、外管１内への挿入を容易にするためにテ
ーパ面を形成しておくとよい。 At this time, two or more (preferably, three or more) spacers 3 are fixed to the outer peripheral surface of the expanded diameter socket 20, and the outer diameter d of the circumference formed by the outer surface of each spacer 3, 3...
is formed so that it is slightly smaller than the inner diameter D of the outer tube 1. Further, it is preferable to form a tapered surface on the front and rear outer surfaces of the main body 30 of the spacer 3 in order to facilitate insertion into the outer tube 1.
このようにして、内管２の拡径受口２０外周面
にスペーサ３，３…を固着した後、外管１内に内
管２を順次挿入し、一方のマンホールM1から他
方のマンホールM2に亘つて内管２，２…を配管
接続する。この時、拡径受口２０を先にして外管
１内に内管２を挿入し、先に挿入した内管２の後
端部をその次に挿入した内管２の拡径受口２０に
挿入・接続してから更に外管１の奥に押し込む
と、スペーサ３が拡径受口２０の外周面から剥離
することがない。 In this way, after fixing the spacers 3, 3, etc. to the outer peripheral surface of the enlarged diameter socket 20 of the inner pipe 2, the inner pipe 2 is sequentially inserted into the outer pipe 1, and the inner pipe 2 is inserted from one manhole M1 to the other manhole M. 2 , connect the inner pipes 2, 2, and so on. At this time, the inner tube 2 is inserted into the outer tube 1 with the expanded diameter socket 20 first, and the rear end of the inner tube 2 inserted first is then inserted into the expanded diameter socket 20 of the inner tube 2. If the spacer 3 is inserted and connected to the outer tube 1 and then pushed further into the inner part of the outer tube 1, the spacer 3 will not peel off from the outer peripheral surface of the expanded diameter socket 20.
最後に、内管２の後端部と外管１との間の空隙
５にスペーサ４を嵌挿し、外管１と内管２との間
の空隙５にセメントミルク等の充填材を注入して
充満させる。この充填材の注入操作は、従来から
行なわれているいかなる装置、手段を用いてもよ
い。かくして、老朽化した外管を内管で再生する
配管施工が完了する。 Finally, a spacer 4 is inserted into the gap 5 between the rear end of the inner tube 2 and the outer tube 1, and a filler such as cement milk is injected into the gap 5 between the outer tube 1 and the inner tube 2. Let it fill up. This filling material injection operation may be performed using any conventional device or means. In this way, the piping construction for regenerating the aging outer pipe with the inner pipe is completed.
尚、前述した実施例では、既設の外管内に内管
を挿入して老朽化した外管を再生する配管施工法
について説明したが、本発明はこの配管施工法に
限定されるものではない。 In the above-mentioned embodiment, a piping construction method was described in which an inner pipe is inserted into an existing outer pipe to regenerate an aging outer pipe, but the present invention is not limited to this piping construction method.
近年、交通量の激しい道路を横切つて上下水道
等を埋設配管する場合には、まず道路の両端に縦
穴を掘り、次にこの縦穴から横穴を掘つてこの横
穴内に鋼管等の外管を所定の勾配をつけて配管
し、しかる後外管内に内管を順次挿入て接続する
配管工法が採用されているが、本発明はこのよう
な新設管の配管工法にも適用できる。 In recent years, when laying underground water and sewage pipes across a road with heavy traffic, first a vertical hole is dug at both ends of the road, then a horizontal hole is dug from the vertical hole, and an outer pipe such as a steel pipe is installed inside the horizontal hole. Although a piping construction method has been adopted in which piping is installed at a predetermined slope and then the inner pipe is successively inserted into the outer pipe for connection, the present invention can also be applied to such a piping construction method for newly installed pipes.
（発明の作用および効果）
以上詳述した如く、本発明は外管内に内管を順
次挿入して配管接続した後、外管と内管との間の
空隙にセメントミルク等の充填材を注入するもの
であるが、内管の端部外周面には外管の内周面に
ほぼ接する厚みを有する複数個のスペーサを固着
したので、充填材を注入した際にも内管が浮き上
がる恐れが全くなく、内管の配管勾配を一定にす
ることができる。(Operations and Effects of the Invention) As detailed above, the present invention provides that after the inner tube is sequentially inserted into the outer tube and the piping is connected, a filler such as cement milk is injected into the gap between the outer tube and the inner tube. However, since multiple spacers with a thickness that is almost in contact with the inner circumferential surface of the outer tube are fixed to the outer circumferential surface of the end of the inner tube, there is a risk that the inner tube will lift up even when the filler is injected. It is possible to keep the piping gradient of the inner pipe constant.
また、内管はスペーサを介して外管の内周面と
部分的に接触しているだけであるので、摩擦抵抗
が小さくなり、内管を外管の奥まで僅かな力で押
し込むことができる。特に、老朽化した外管を内
管で再生する場合には、外管の内周面は腐食して
凹凸が存在するので、内管を外管の奥に押し込む
作業が非常に困難であつたが、本発明によれば内
管を簡単に押し込めるので、配管施工が極めて簡
単に行なえるという利点がある。 In addition, since the inner tube only partially contacts the inner peripheral surface of the outer tube via the spacer, frictional resistance is reduced and the inner tube can be pushed deep into the outer tube with a small amount of force. . In particular, when regenerating an aging outer tube with an inner tube, the inner peripheral surface of the outer tube is corroded and uneven, making it extremely difficult to push the inner tube deep into the outer tube. However, according to the present invention, since the inner pipe can be easily pushed in, there is an advantage that piping construction can be performed extremely easily.
第１図は本発明の一実施例を示す縦断面図、第
２図は本発明で使用される内管の部分断面図であ
る。
１……外管、２……内管、３，４……スペー
サ、５……空隙。
FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention, and FIG. 2 is a partial sectional view of an inner tube used in the present invention. 1...Outer tube, 2...Inner tube, 3, 4...Spacer, 5...Gap.
Claims (1)
るにあたり、内管２の端部外周面に外管１の内周
面にほぼ接する厚みを有する複数のスペーサ３，
３…を固着し、次いでこの内管２を外管１内に挿
入して順次接続した後、外管１の内周面と内管２
との間の空隙５にセメントミルク等の充填材を充
満させたことを特徴とする配管施工法。1. When the inner tube 2 is sequentially inserted into the outer tube 1 for piping connection, a plurality of spacers 3 having a thickness that almost touches the inner circumferential surface of the outer tube 1 are placed on the outer circumferential surface of the end of the inner tube 2.
3..., then insert this inner tube 2 into the outer tube 1 and connect them in sequence, and then connect the inner circumferential surface of the outer tube 1 and the inner tube 2.
A piping construction method characterized in that the gap 5 between the piping and the piping is filled with a filler such as cement milk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26811585A JPS62127586A (en) | 1985-11-28 | 1985-11-28 | Method of executing piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26811585A JPS62127586A (en) | 1985-11-28 | 1985-11-28 | Method of executing piping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62127586A JPS62127586A (en) | 1987-06-09 |
| JPH0524393B2 true JPH0524393B2 (en) | 1993-04-07 |
Family
ID=17454094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26811585A Granted JPS62127586A (en) | 1985-11-28 | 1985-11-28 | Method of executing piping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62127586A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2652018B2 (en) * | 1987-05-28 | 1997-09-10 | キヤノン株式会社 | Liquid crystal display panel substrate, liquid crystal display panel and method of manufacturing the same |
| JP2652655B2 (en) * | 1988-04-01 | 1997-09-10 | タキロン株式会社 | Internal lining method for existing pipes |
| JP5408543B2 (en) * | 2009-11-19 | 2014-02-05 | 株式会社栗本鐵工所 | Pipeline rehabilitation method |
-
1985
- 1985-11-28 JP JP26811585A patent/JPS62127586A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62127586A (en) | 1987-06-09 |
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