JPS5212731A - Sound insulation tunnel - Google Patents

Sound insulation tunnel

Info

Publication number
JPS5212731A
JPS5212731A JP8849375A JP8849375A JPS5212731A JP S5212731 A JPS5212731 A JP S5212731A JP 8849375 A JP8849375 A JP 8849375A JP 8849375 A JP8849375 A JP 8849375A JP S5212731 A JPS5212731 A JP S5212731A
Authority
JP
Japan
Prior art keywords
sound insulation
insulation tunnel
tunnel
sound
insulation
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
JP8849375A
Other languages
Japanese (ja)
Inventor
Tsuyoshi Sakurai
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8849375A priority Critical patent/JPS5212731A/en
Publication of JPS5212731A publication Critical patent/JPS5212731A/en
Pending legal-status Critical Current

Links

JP8849375A 1975-07-18 1975-07-18 Sound insulation tunnel Pending JPS5212731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8849375A JPS5212731A (en) 1975-07-18 1975-07-18 Sound insulation tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8849375A JPS5212731A (en) 1975-07-18 1975-07-18 Sound insulation tunnel

Publications (1)

Publication Number Publication Date
JPS5212731A true JPS5212731A (en) 1977-01-31

Family

ID=13944328

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8849375A Pending JPS5212731A (en) 1975-07-18 1975-07-18 Sound insulation tunnel

Country Status (1)

Country Link
JP (1) JPS5212731A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541930A (en) * 1977-06-06 1979-01-09 Japan National Railway Method of reducing air pressure noises at outlet opening of tunnel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144026A (en) * 1975-06-06 1976-12-10 Asahi Chemical Ind Sound insulation hood for tunnel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144026A (en) * 1975-06-06 1976-12-10 Asahi Chemical Ind Sound insulation hood for tunnel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541930A (en) * 1977-06-06 1979-01-09 Japan National Railway Method of reducing air pressure noises at outlet opening of tunnel

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