JPH0527590Y2 - - Google Patents
Info
- Publication number
- JPH0527590Y2 JPH0527590Y2 JP10694389U JP10694389U JPH0527590Y2 JP H0527590 Y2 JPH0527590 Y2 JP H0527590Y2 JP 10694389 U JP10694389 U JP 10694389U JP 10694389 U JP10694389 U JP 10694389U JP H0527590 Y2 JPH0527590 Y2 JP H0527590Y2
- Authority
- JP
- Japan
- Prior art keywords
- kelly bar
- groove
- kelly
- drainage
- bar
- 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
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000009412 basement excavation Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 229910000278 bentonite Inorganic materials 0.000 description 7
- 239000000440 bentonite Substances 0.000 description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000002689 soil Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10694389U JPH0527590Y2 (enrdf_load_stackoverflow) | 1989-09-12 | 1989-09-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10694389U JPH0527590Y2 (enrdf_load_stackoverflow) | 1989-09-12 | 1989-09-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0346589U JPH0346589U (enrdf_load_stackoverflow) | 1991-04-30 |
| JPH0527590Y2 true JPH0527590Y2 (enrdf_load_stackoverflow) | 1993-07-14 |
Family
ID=31655663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10694389U Expired - Lifetime JPH0527590Y2 (enrdf_load_stackoverflow) | 1989-09-12 | 1989-09-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0527590Y2 (enrdf_load_stackoverflow) |
-
1989
- 1989-09-12 JP JP10694389U patent/JPH0527590Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0346589U (enrdf_load_stackoverflow) | 1991-04-30 |
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