JPS5526355A - Circular pillar hole continuous drilling method and its device - Google Patents
Circular pillar hole continuous drilling method and its deviceInfo
- Publication number
- JPS5526355A JPS5526355A JP9842978A JP9842978A JPS5526355A JP S5526355 A JPS5526355 A JP S5526355A JP 9842978 A JP9842978 A JP 9842978A JP 9842978 A JP9842978 A JP 9842978A JP S5526355 A JPS5526355 A JP S5526355A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- drilled
- shaft
- drilling
- guide shaft
- 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
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
PURPOSE: To facilitate drilling, by keeping a new hole at accurate positional relationship without damaging a hole previously drilled by inserting a guide shaft, which does not revolve, into the hole previously dfilled while drilling earch and sand by means of a drilling shaft.
CONSTITUTION: A guide shaft 2, which does not rotate, and a drilling shaft 3, which drills revolving, are mounted to a drilling machine 1. A guide plate 9 is installed to the guide shaft 2. The guide shaft 2, which does not revolve, is inserted into a hole 5 previously drilled while earth and sand are drilled by rotating the drilling shaft 3, and a new hole 5a is drilled. Positional relationship between the hole beforehand drilled and the new hole 5a becomes accurate because holes are drilled by means of the drilling shaft 3 while the guide shaft 2 enters into the hole 5 beforehand drilled at that time. Since the guide shaft 2 does not revolve, the hole 5 drilled is not damaged as compared to the case when the shaft 2 is rotated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9842978A JPS5526355A (en) | 1978-08-11 | 1978-08-11 | Circular pillar hole continuous drilling method and its device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9842978A JPS5526355A (en) | 1978-08-11 | 1978-08-11 | Circular pillar hole continuous drilling method and its device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5526355A true JPS5526355A (en) | 1980-02-25 |
Family
ID=14219557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9842978A Pending JPS5526355A (en) | 1978-08-11 | 1978-08-11 | Circular pillar hole continuous drilling method and its device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5526355A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60181488A (en) * | 1984-02-29 | 1985-09-17 | 吉澤石灰工業株式会社 | Construction of slit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50111821A (en) * | 1974-02-12 | 1975-09-02 | ||
JPS5266106U (en) * | 1975-11-11 | 1977-05-16 |
-
1978
- 1978-08-11 JP JP9842978A patent/JPS5526355A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50111821A (en) * | 1974-02-12 | 1975-09-02 | ||
JPS5266106U (en) * | 1975-11-11 | 1977-05-16 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60181488A (en) * | 1984-02-29 | 1985-09-17 | 吉澤石灰工業株式会社 | Construction of slit |
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