JPS55108599A - Method of preventing freezing in tunnel - Google Patents

Method of preventing freezing in tunnel

Info

Publication number
JPS55108599A
JPS55108599A JP1407979A JP1407979A JPS55108599A JP S55108599 A JPS55108599 A JP S55108599A JP 1407979 A JP1407979 A JP 1407979A JP 1407979 A JP1407979 A JP 1407979A JP S55108599 A JPS55108599 A JP S55108599A
Authority
JP
Japan
Prior art keywords
tunnel
preventing freezing
freezing
preventing
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
JP1407979A
Other languages
Japanese (ja)
Inventor
Koushirou Sekiguchi
Hidenori Hayasaka
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.)
SHION JIYUSHI KOGYO KK
Original Assignee
SHION JIYUSHI KOGYO 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
Priority claimed from JP14079A external-priority patent/JPS54101588A/en
Application filed by SHION JIYUSHI KOGYO KK filed Critical SHION JIYUSHI KOGYO KK
Publication of JPS55108599A publication Critical patent/JPS55108599A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lining And Supports For Tunnels (AREA)
JP1407979A 1979-01-08 1979-02-09 Method of preventing freezing in tunnel Pending JPS55108599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14079A JPS54101588A (en) 1978-01-09 1979-01-08 Polishing material consisting of bauxite and zirconia

Publications (1)

Publication Number Publication Date
JPS55108599A true JPS55108599A (en) 1980-08-20

Family

ID=11465713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1407979A Pending JPS55108599A (en) 1979-01-08 1979-02-09 Method of preventing freezing in tunnel

Country Status (1)

Country Link
JP (1) JPS55108599A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5027291A (en) * 1973-07-14 1975-03-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5027291A (en) * 1973-07-14 1975-03-20

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