JPS5719496A - Rock bolt reinforcement of poor rock bed - Google Patents

Rock bolt reinforcement of poor rock bed

Info

Publication number
JPS5719496A
JPS5719496A JP9225180A JP9225180A JPS5719496A JP S5719496 A JPS5719496 A JP S5719496A JP 9225180 A JP9225180 A JP 9225180A JP 9225180 A JP9225180 A JP 9225180A JP S5719496 A JPS5719496 A JP S5719496A
Authority
JP
Japan
Prior art keywords
rock
poor
bed
bolt reinforcement
reinforcement
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
JP9225180A
Other languages
Japanese (ja)
Inventor
Toshimi Nagano
Kinai Takagi
Yoshie Narita
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.)
Japan National Railways
Original Assignee
Japan National Railways
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 Japan National Railways filed Critical Japan National Railways
Priority to JP9225180A priority Critical patent/JPS5719496A/en
Publication of JPS5719496A publication Critical patent/JPS5719496A/en
Pending legal-status Critical Current

Links

JP9225180A 1980-07-08 1980-07-08 Rock bolt reinforcement of poor rock bed Pending JPS5719496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9225180A JPS5719496A (en) 1980-07-08 1980-07-08 Rock bolt reinforcement of poor rock bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9225180A JPS5719496A (en) 1980-07-08 1980-07-08 Rock bolt reinforcement of poor rock bed

Publications (1)

Publication Number Publication Date
JPS5719496A true JPS5719496A (en) 1982-02-01

Family

ID=14049200

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9225180A Pending JPS5719496A (en) 1980-07-08 1980-07-08 Rock bolt reinforcement of poor rock bed

Country Status (1)

Country Link
JP (1) JPS5719496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62145559A (en) * 1985-12-18 1987-06-29 Sony Corp Control signal reproducing circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62145559A (en) * 1985-12-18 1987-06-29 Sony Corp Control signal reproducing circuit

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