JPS63195179U - - Google Patents
Info
- Publication number
- JPS63195179U JPS63195179U JP8619787U JP8619787U JPS63195179U JP S63195179 U JPS63195179 U JP S63195179U JP 8619787 U JP8619787 U JP 8619787U JP 8619787 U JP8619787 U JP 8619787U JP S63195179 U JPS63195179 U JP S63195179U
- Authority
- JP
- Japan
- Prior art keywords
- underground pipe
- pipe
- rough
- unevenness
- sand
- 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.)
- Pending
Links
- 239000002245 particle Substances 0.000 claims 1
- 239000004576 sand Substances 0.000 claims 1
- 230000003746 surface roughness Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
第１図Ａは従来の地中埋設管の管端面を示す正
面図、Ｂは本考案の地中埋設管の管端面を示す正
面図、第２図は地中埋設管の管頂付近への鉛直応
力集中のメカニズムを示す説明図である。 １……地中埋設管、２……管外表面、３……粗
面部分。
面図、Ｂは本考案の地中埋設管の管端面を示す正
面図、第２図は地中埋設管の管頂付近への鉛直応
力集中のメカニズムを示す説明図である。 １……地中埋設管、２……管外表面、３……粗
面部分。
Claims (1)
- 【実用新案登録請求の範囲】 (1) 管外表面の少なくとも上半部が粗面である
ことを特徴とする地中埋設管。 (2) 前記表面粗さは埋め戻し用土砂の平均粒径
よりも多きな凹凸であることを特徴とする実用新
案登録請求の範囲第１項に記載の地中埋設管。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8619787U JPS63195179U (ja) | 1987-06-04 | 1987-06-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8619787U JPS63195179U (ja) | 1987-06-04 | 1987-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63195179U true JPS63195179U (ja) | 1988-12-15 |
Family
ID=30942288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8619787U Pending JPS63195179U (ja) | 1987-06-04 | 1987-06-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63195179U (ja) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57173129A (en) * | 1981-04-18 | 1982-10-25 | Sumitomo Metal Ind Ltd | Manufacture of metallic pipe coated with plastic with nonslip |
-
1987
- 1987-06-04 JP JP8619787U patent/JPS63195179U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57173129A (en) * | 1981-04-18 | 1982-10-25 | Sumitomo Metal Ind Ltd | Manufacture of metallic pipe coated with plastic with nonslip |