JPS6136620Y2 - - Google Patents
Info
- Publication number
- JPS6136620Y2 JPS6136620Y2 JP13104381U JP13104381U JPS6136620Y2 JP S6136620 Y2 JPS6136620 Y2 JP S6136620Y2 JP 13104381 U JP13104381 U JP 13104381U JP 13104381 U JP13104381 U JP 13104381U JP S6136620 Y2 JPS6136620 Y2 JP S6136620Y2
- Authority
- JP
- Japan
- Prior art keywords
- bit
- boundary line
- chips
- hole
- fracture
- 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
Links
- 238000005553 drilling Methods 0.000 claims description 14
- 239000011435 rock Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13104381U JPS5838890U (ja) | 1981-09-02 | 1981-09-02 | さく溝用ビツト |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13104381U JPS5838890U (ja) | 1981-09-02 | 1981-09-02 | さく溝用ビツト |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5838890U JPS5838890U (ja) | 1983-03-14 |
| JPS6136620Y2 true JPS6136620Y2 (en, 2012) | 1986-10-23 |
Family
ID=29924641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13104381U Granted JPS5838890U (ja) | 1981-09-02 | 1981-09-02 | さく溝用ビツト |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5838890U (en, 2012) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5145504B1 (ja) * | 2012-01-30 | 2013-02-20 | 株式会社神島組 | 破砕装置および破砕方法 |
-
1981
- 1981-09-02 JP JP13104381U patent/JPS5838890U/ja active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5145504B1 (ja) * | 2012-01-30 | 2013-02-20 | 株式会社神島組 | 破砕装置および破砕方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5838890U (ja) | 1983-03-14 |
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