JPS527267A - Measurement method of a tunnel section - Google Patents
Measurement method of a tunnel sectionInfo
- Publication number
- JPS527267A JPS527267A JP8282575A JP8282575A JPS527267A JP S527267 A JPS527267 A JP S527267A JP 8282575 A JP8282575 A JP 8282575A JP 8282575 A JP8282575 A JP 8282575A JP S527267 A JPS527267 A JP S527267A
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- measurement method
- tunnel section
- section
- prependiculaly
- 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
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE: To measure a needed section of a tunnel simply and accurately by taking a photograph of reflected light from a light source and reducing it. The lighting ray flux with the limited breadth is projected on the surface of the inner wall, all over the section of the tunnel across the center line of the tunnel prependiculaly.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8282575A JPS527267A (en) | 1975-07-07 | 1975-07-07 | Measurement method of a tunnel section |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8282575A JPS527267A (en) | 1975-07-07 | 1975-07-07 | Measurement method of a tunnel section |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS527267A true JPS527267A (en) | 1977-01-20 |
Family
ID=13785168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8282575A Pending JPS527267A (en) | 1975-07-07 | 1975-07-07 | Measurement method of a tunnel section |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS527267A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60213811A (en) * | 1984-04-09 | 1985-10-26 | Tokyu Constr Co Ltd | Automatic measuring apparatus of cross section of tunnel |
JPS61191792A (en) * | 1985-02-16 | 1986-08-26 | マツダ株式会社 | Drilling apparatus for rock driller |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50156956A (en) * | 1974-06-10 | 1975-12-18 |
-
1975
- 1975-07-07 JP JP8282575A patent/JPS527267A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50156956A (en) * | 1974-06-10 | 1975-12-18 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60213811A (en) * | 1984-04-09 | 1985-10-26 | Tokyu Constr Co Ltd | Automatic measuring apparatus of cross section of tunnel |
JPS61191792A (en) * | 1985-02-16 | 1986-08-26 | マツダ株式会社 | Drilling apparatus for rock driller |
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