JPS5771990A - Excavation of shaft hole - Google Patents

Excavation of shaft hole

Info

Publication number
JPS5771990A
JPS5771990A JP14711480A JP14711480A JPS5771990A JP S5771990 A JPS5771990 A JP S5771990A JP 14711480 A JP14711480 A JP 14711480A JP 14711480 A JP14711480 A JP 14711480A JP S5771990 A JPS5771990 A JP S5771990A
Authority
JP
Japan
Prior art keywords
excavation
shaft hole
shaft
hole
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
JP14711480A
Other languages
English (en)
Inventor
Katsusuke Awano
Yasushi Tanaka
Yutaka Fujii
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP14711480A priority Critical patent/JPS5771990A/ja
Publication of JPS5771990A publication Critical patent/JPS5771990A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP14711480A 1980-10-21 1980-10-21 Excavation of shaft hole Pending JPS5771990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14711480A JPS5771990A (en) 1980-10-21 1980-10-21 Excavation of shaft hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14711480A JPS5771990A (en) 1980-10-21 1980-10-21 Excavation of shaft hole

Publications (1)

Publication Number Publication Date
JPS5771990A true JPS5771990A (en) 1982-05-06

Family

ID=15422838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14711480A Pending JPS5771990A (en) 1980-10-21 1980-10-21 Excavation of shaft hole

Country Status (1)

Country Link
JP (1) JPS5771990A (ja)

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