JPS59102091A - トンネル拡大掘削工法 - Google Patents

トンネル拡大掘削工法

Info

Publication number
JPS59102091A
JPS59102091A JP21136182A JP21136182A JPS59102091A JP S59102091 A JPS59102091 A JP S59102091A JP 21136182 A JP21136182 A JP 21136182A JP 21136182 A JP21136182 A JP 21136182A JP S59102091 A JPS59102091 A JP S59102091A
Authority
JP
Japan
Prior art keywords
tunnel
excavation
enlarged
normal diameter
center
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.)
Granted
Application number
JP21136182A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6217073B2 (enExample
Inventor
井上　一敏
湯浅　康尊
安雄 清水
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.)
Mitsui Construction Co Ltd
Original Assignee
Mitsui Construction Co 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 Mitsui Construction Co Ltd filed Critical Mitsui Construction Co Ltd
Priority to JP21136182A priority Critical patent/JPS59102091A/ja
Publication of JPS59102091A publication Critical patent/JPS59102091A/ja
Publication of JPS6217073B2 publication Critical patent/JPS6217073B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP21136182A 1982-12-03 1982-12-03 トンネル拡大掘削工法 Granted JPS59102091A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21136182A JPS59102091A (ja) 1982-12-03 1982-12-03 トンネル拡大掘削工法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21136182A JPS59102091A (ja) 1982-12-03 1982-12-03 トンネル拡大掘削工法

Publications (2)

Publication Number Publication Date
JPS59102091A true JPS59102091A (ja) 1984-06-12
JPS6217073B2 JPS6217073B2 (enExample) 1987-04-15

Family

ID=16604692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21136182A Granted JPS59102091A (ja) 1982-12-03 1982-12-03 トンネル拡大掘削工法

Country Status (1)

Country Link
JP (1) JPS59102091A (enExample)

Also Published As

Publication number Publication date
JPS6217073B2 (enExample) 1987-04-15

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