JPS4994135A - - Google Patents
Info
- Publication number
- JPS4994135A JPS4994135A JP10862273A JP10862273A JPS4994135A JP S4994135 A JPS4994135 A JP S4994135A JP 10862273 A JP10862273 A JP 10862273A JP 10862273 A JP10862273 A JP 10862273A JP S4994135 A JPS4994135 A JP S4994135A
- Authority
- JP
- Japan
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/04—Provisional protective covers for working space for use in drifting galleries
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722247914 DE2247914B2 (de) | 1972-09-29 | 1972-09-29 | Geschlossener Vortriebsschild zum Auffahren von Tunnels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4994135A true JPS4994135A (tr) | 1974-09-06 |
Family
ID=5857799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10862273A Pending JPS4994135A (tr) | 1972-09-29 | 1973-09-28 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS4994135A (tr) |
| DE (1) | DE2247914B2 (tr) |
| GB (1) | GB1422207A (tr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894641B (zh) * | 2020-08-10 | 2022-02-11 | 陕西省高速公路建设集团公司 | 一种隧道穿越特大型有水空腔溶洞处治与施工工艺 |
-
1972
- 1972-09-29 DE DE19722247914 patent/DE2247914B2/de not_active Withdrawn
-
1973
- 1973-08-17 GB GB3906973A patent/GB1422207A/en not_active Expired
- 1973-09-28 JP JP10862273A patent/JPS4994135A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2247914A1 (de) | 1974-04-04 |
| DE2247914B2 (de) | 1978-10-05 |
| GB1422207A (en) | 1976-01-21 |