JPS6220357B2 - - Google Patents

Info

Publication number
JPS6220357B2
JPS6220357B2 JP57146647A JP14664782A JPS6220357B2 JP S6220357 B2 JPS6220357 B2 JP S6220357B2 JP 57146647 A JP57146647 A JP 57146647A JP 14664782 A JP14664782 A JP 14664782A JP S6220357 B2 JPS6220357 B2 JP S6220357B2
Authority
JP
Japan
Prior art keywords
shaft
blasting
explosives
blast
central shaft
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.)
Expired
Application number
JP57146647A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5938494A (ja
Inventor
Tsutomu Yoneda
Saneji Sato
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.)
Okumura Corp
Original Assignee
Okumura Corp
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 Okumura Corp filed Critical Okumura Corp
Priority to JP14664782A priority Critical patent/JPS5938494A/ja
Publication of JPS5938494A publication Critical patent/JPS5938494A/ja
Publication of JPS6220357B2 publication Critical patent/JPS6220357B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)
JP14664782A 1982-08-24 1982-08-24 岩盤孔掘削工法 Granted JPS5938494A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14664782A JPS5938494A (ja) 1982-08-24 1982-08-24 岩盤孔掘削工法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14664782A JPS5938494A (ja) 1982-08-24 1982-08-24 岩盤孔掘削工法

Publications (2)

Publication Number Publication Date
JPS5938494A JPS5938494A (ja) 1984-03-02
JPS6220357B2 true JPS6220357B2 (cs) 1987-05-06

Family

ID=15412456

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14664782A Granted JPS5938494A (ja) 1982-08-24 1982-08-24 岩盤孔掘削工法

Country Status (1)

Country Link
JP (1) JPS5938494A (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2555387Y2 (ja) * 1991-04-26 1997-11-19 株式会社丸島アクアシステム 除塵機のスクリーンケージ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5774600A (en) * 1980-10-29 1982-05-10 Youichi Shiba Blasting of rock bed or the like

Also Published As

Publication number Publication date
JPS5938494A (ja) 1984-03-02

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