JPS63879Y2 - - Google Patents
Info
- Publication number
- JPS63879Y2 JPS63879Y2 JP1980031262U JP3126280U JPS63879Y2 JP S63879 Y2 JPS63879 Y2 JP S63879Y2 JP 1980031262 U JP1980031262 U JP 1980031262U JP 3126280 U JP3126280 U JP 3126280U JP S63879 Y2 JPS63879 Y2 JP S63879Y2
- Authority
- JP
- Japan
- Prior art keywords
- lock
- locks
- material lock
- tunnel
- entrance
- 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
- 239000000463 material Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 description 15
- 238000010276 construction Methods 0.000 description 6
- 239000000470 constituent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1980031262U JPS63879Y2 (ru) | 1980-03-11 | 1980-03-11 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1980031262U JPS63879Y2 (ru) | 1980-03-11 | 1980-03-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56134999U JPS56134999U (ru) | 1981-10-13 |
JPS63879Y2 true JPS63879Y2 (ru) | 1988-01-11 |
Family
ID=29627127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1980031262U Expired JPS63879Y2 (ru) | 1980-03-11 | 1980-03-11 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63879Y2 (ru) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4956403A (ru) * | 1972-10-02 | 1974-05-31 |
-
1980
- 1980-03-11 JP JP1980031262U patent/JPS63879Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4956403A (ru) * | 1972-10-02 | 1974-05-31 |
Also Published As
Publication number | Publication date |
---|---|
JPS56134999U (ru) | 1981-10-13 |
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