JPH0549873B2 - - Google Patents
Info
- Publication number
- JPH0549873B2 JPH0549873B2 JP1168435A JP16843589A JPH0549873B2 JP H0549873 B2 JPH0549873 B2 JP H0549873B2 JP 1168435 A JP1168435 A JP 1168435A JP 16843589 A JP16843589 A JP 16843589A JP H0549873 B2 JPH0549873 B2 JP H0549873B2
- Authority
- JP
- Japan
- Prior art keywords
- buried pipe
- soil
- trench
- backfilling
- resin powder
- 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
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Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、埋設管の敷設方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of laying a buried pipe.
［従来の技術］
従来、水道管、ガス管等の埋設管を敷設するに
は、第２図に示すように、先ず、溝１を掘り、次
いで、溝１の底部に埋戻土２Ａを入れ、これを突
き固める。次いで、埋戻土２Ａ上に埋設管３を敷
設し、埋設管３の上部に埋戻土２Ｂを入れ、これ
を突き固める。[Prior Art] Conventionally, in order to lay underground pipes such as water pipes and gas pipes, as shown in FIG. , solidify this. Next, the buried pipe 3 is laid on the backfilling soil 2A, and the backfilling soil 2B is put in the upper part of the buried pipe 3, and this is tamped.
［発明が解決しようとする課題］
しかしながら、上述した従来の、埋設管の敷設
方法は、以下のような問題を有していた。[Problems to be Solved by the Invention] However, the conventional buried pipe installation method described above had the following problems.
(1) 溝１を掘削した後の土を、埋戻土２Ａ，２Ｂ
として使用せず、埋戻土２Ａ，２Ｂとしては通
常、山砂が使用されるが、この山砂の確保が近
年、困難である。(1) The soil after excavating trench 1 is backfilled with soil 2A and 2B.
Mountain sand is normally used as the backfill soil 2A, 2B, but it has been difficult to secure this mountain sand in recent years.
(2) 埋戻土の突固め等に時間と手間がかかり、突
固めが均一でない場合には、埋設管３に地盤沈
下等によつて曲げ力が作用して、埋設管３が破
損する虞れがある。(2) If it takes time and effort to compact the backfilling soil, and if the compaction is not uniform, bending force will be applied to the buried pipe 3 due to ground subsidence, etc., and there is a risk that the buried pipe 3 will be damaged. There is.
(3) 埋設管３には直接、土荷重や車両荷重が作用
するので、埋設管３として高強度のものを使用
する必要がある。(3) Since earth loads and vehicle loads directly act on the buried pipe 3, it is necessary to use a high-strength one as the buried pipe 3.
(4) 埋設管３の補修時等において、埋戻土２Ｂを
掘り上げる場合に、誤つて埋設管３を損傷する
ことがある。(4) When digging up the backfill soil 2B when repairing the buried pipe 3, etc., the buried pipe 3 may be accidentally damaged.
従つて、この発明の目的は、埋戻土が少量で済
み、埋戻土の突固め作業が軽微で済み、埋戻土を
掘り上げる場合に、誤つて埋設管を損傷する虞れ
が少ない、埋設管の敷設方法を提供することにあ
る。 Therefore, the object of the present invention is to use a small amount of backfill soil, to minimize the compaction work of the backfill soil, and to reduce the risk of accidentally damaging buried pipes when digging up the backfill soil. The object of the present invention is to provide a method for laying underground pipes.
［課題を解決するための手段］
この発明は、溝を掘削し、次いで、前記溝内に
スペーサーを介して埋設管を敷設し、次いで、前
記溝内に、発泡樹脂粉粒体を充填し、そして、前
記溝上部を埋戻土によつて埋戻すことに特徴を有
するものである。[Means for Solving the Problems] This invention involves excavating a trench, then laying a buried pipe in the trench via a spacer, and then filling the trench with foamed resin powder, The present invention is characterized in that the upper part of the trench is backfilled with backfilling soil.
次に、この発明の、埋設管の敷設方法の一実施
態様を、図面を参照しながら説明する。 Next, one embodiment of the buried pipe laying method of the present invention will be described with reference to the drawings.
第１図は、この発明の、埋設管の敷設方法の一
実施態様を示す断面図である。 FIG. 1 is a sectional view showing one embodiment of the buried pipe laying method of the present invention.
第１図に示すように、この発明は、先ず、溝１
を掘削し、次いで、溝１内にスペーサー２を介し
て埋設管３を敷設し、次いで、溝１内に発泡樹脂
粉粒体４を充填し、そして、最後に、溝１上部を
埋戻土５によつて埋戻すことからなつている。 As shown in FIG.
Then, a buried pipe 3 is laid in the trench 1 via a spacer 2, then the foamed resin powder 4 is filled in the trench 1, and finally, the upper part of the trench 1 is backfilled with soil. It consists of backfilling with 5.
溝１内に敷設された埋設管３の周囲に発泡樹脂
粉粒体４を充填することによつて、埋戻土の量が
大幅に減少し、埋戻土の突固めも最後に埋戻す埋
戻土５だけで済み、発泡樹脂粉粒体４が緩衝性を
有し且つ軽量であるので、その分、埋設管３の強
度を低減でき、さらに、埋設管３の補修時等にお
いて、埋戻土５を掘り上げる場合に、発泡樹脂粉
粒体４は容易に掘り上げることができるので、埋
設管４が掘削機等によつて損傷を受ける虞れが少
ない。 By filling the periphery of the buried pipe 3 laid in the trench 1 with foamed resin powder 4, the amount of backfilling soil can be significantly reduced, and the compaction of the backfilling soil can also be done at the final stage. Only the soil 5 is required, and the foamed resin powder 4 has cushioning properties and is lightweight, so the strength of the buried pipe 3 can be reduced accordingly. When digging up the soil 5, the foamed resin powder 4 can be easily dug up, so there is little risk that the buried pipe 4 will be damaged by an excavator or the like.
発泡樹脂粉粒体４の粒径は、0.5mmから3.0mmの
範囲内が好ましい。 The particle size of the foamed resin powder 4 is preferably within the range of 0.5 mm to 3.0 mm.
［発明の効果］
以上説明したように、この発明によれば、埋戻
土の一部を発泡樹脂粉粒体に代えることによつ
て、以下のような有用な効果ががもたらされる。[Effects of the Invention] As explained above, according to the present invention, the following useful effects are brought about by replacing part of the backfilling soil with foamed resin powder.
(1) 埋戻土の量が大幅に減少することで、埋戻土
用の山砂の確保や突固め作業が軽減される。(1) By significantly reducing the amount of backfill soil, securing mountain sand for backfill soil and compacting work will be reduced.
(2) 埋設管にかかる荷重が減少するので、その
分、埋設管として強度の低いものを使用でき
る。(2) Since the load on the buried pipe is reduced, it is possible to use a pipe with lower strength.
(3) 埋設管の補修時等において、埋戻土を掘り上
げる場合に、埋設管を損傷させる虞れが少な
い。(3) There is less risk of damaging the buried pipe when backfilling soil is dug up when repairing the buried pipe.
第１図は、この発明の、埋設管の敷設方法の一
実施態様を示す断面図、第２図は、従来の、埋設
管の敷設方法を示す断面図である。図面におい
て、
１……溝、２……スペーサー、３……埋設管、
４……発泡樹脂粉粒体、５……埋戻土。
FIG. 1 is a sectional view showing an embodiment of the buried pipe laying method of the present invention, and FIG. 2 is a sectional view showing a conventional buried pipe laying method. In the drawing, 1...Groove, 2...Spacer, 3...Buried pipe,
4... Foamed resin powder, 5... Backfilling soil.
Claims (1)
を介して埋設管を敷設し、次いで、前記溝内に、
発泡樹脂粉粒体を充填し、そして、前記溝上部を
埋戻土によつて埋戻すことを特徴とする、埋設管
の敷設方法。1. Dig a trench, then lay a buried pipe in the trench via a spacer, and then, in the trench,
A method for laying a buried pipe, comprising filling the groove with foamed resin powder and backfilling the upper part of the groove with backfilling soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1168435A JPH0333583A (en) | 1989-06-30 | 1989-06-30 | How to lay underground pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1168435A JPH0333583A (en) | 1989-06-30 | 1989-06-30 | How to lay underground pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0333583A JPH0333583A (en) | 1991-02-13 |
| JPH0549873B2 true JPH0549873B2 (en) | 1993-07-27 |
Family
ID=15868064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1168435A Granted JPH0333583A (en) | 1989-06-30 | 1989-06-30 | How to lay underground pipes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0333583A (en) |
-
1989
- 1989-06-30 JP JP1168435A patent/JPH0333583A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0333583A (en) | 1991-02-13 |
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