JPS5523267A - Method of twoostage excavation - Google Patents

Method of twoostage excavation

Info

Publication number
JPS5523267A
JPS5523267A JP9608178A JP9608178A JPS5523267A JP S5523267 A JPS5523267 A JP S5523267A JP 9608178 A JP9608178 A JP 9608178A JP 9608178 A JP9608178 A JP 9608178A JP S5523267 A JPS5523267 A JP S5523267A
Authority
JP
Japan
Prior art keywords
twoostage
excavation
twoostage excavation
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
Application number
JP9608178A
Other languages
Japanese (ja)
Inventor
Masaaki Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Kokan Koji KK
Original Assignee
Nippon Kokan Koji KK
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 by Nippon Kokan Koji KK filed Critical Nippon Kokan Koji KK
Priority to JP9608178A priority Critical patent/JPS5523267A/en
Publication of JPS5523267A publication Critical patent/JPS5523267A/en
Pending legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP9608178A 1978-08-09 1978-08-09 Method of twoostage excavation Pending JPS5523267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9608178A JPS5523267A (en) 1978-08-09 1978-08-09 Method of twoostage excavation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9608178A JPS5523267A (en) 1978-08-09 1978-08-09 Method of twoostage excavation

Publications (1)

Publication Number Publication Date
JPS5523267A true JPS5523267A (en) 1980-02-19

Family

ID=14155434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9608178A Pending JPS5523267A (en) 1978-08-09 1978-08-09 Method of twoostage excavation

Country Status (1)

Country Link
JP (1) JPS5523267A (en)

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