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
Application number
JP10862273A
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of JPS4994135A publication Critical patent/JPS4994135A/ja
Pending legal-status Critical Current

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)
JP10862273A 1972-09-29 1973-09-28 Pending JPS4994135A (US08124317-20120228-C00018.png)

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 (US08124317-20120228-C00018.png) 1974-09-06

Family

ID=5857799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10862273A Pending JPS4994135A (US08124317-20120228-C00018.png) 1972-09-29 1973-09-28

Country Status (3)

Country Link
JP (1) JPS4994135A (US08124317-20120228-C00018.png)
DE (1) DE2247914B2 (US08124317-20120228-C00018.png)
GB (1) GB1422207A (US08124317-20120228-C00018.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE2247914B2 (de) 1978-10-05
DE2247914A1 (de) 1974-04-04
GB1422207A (en) 1976-01-21

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