JPS57174511A - Rubber dam - Google Patents

Rubber dam

Info

Publication number
JPS57174511A
JPS57174511A JP5909981A JP5909981A JPS57174511A JP S57174511 A JPS57174511 A JP S57174511A JP 5909981 A JP5909981 A JP 5909981A JP 5909981 A JP5909981 A JP 5909981A JP S57174511 A JPS57174511 A JP S57174511A
Authority
JP
Japan
Prior art keywords
rubber dam
overflow
noise
space
resonance
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
JP5909981A
Other languages
Japanese (ja)
Inventor
Toshio Fukai
Hideaki Saito
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.)
Bridgestone Corp
Original Assignee
Bridgestone 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 Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP5909981A priority Critical patent/JPS57174511A/en
Publication of JPS57174511A publication Critical patent/JPS57174511A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/005—Deformable barrages or barrages consisting of permanently deformable elements, e.g. inflatable, with flexible walls

Abstract

PURPOSE:To prevent the occurrence of noise by eliminating resonance by using a rubber dam in which projections are provided on the surface of water at an inerval L in the longwise direction of a rubber dam and the ratio of the distance L to the height H of the risen rubber dam is designated to L/H<=7.5. CONSTITUTION:Since the length of an overflow 3a, or a space 4, is cut every interval L and the volume of the space is thus smaller than in the conventional cases, no resonance with the vibration of water flow occurs, and therefore, the increase in the noise of overflow can be avoided.
JP5909981A 1981-04-21 1981-04-21 Rubber dam Pending JPS57174511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5909981A JPS57174511A (en) 1981-04-21 1981-04-21 Rubber dam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5909981A JPS57174511A (en) 1981-04-21 1981-04-21 Rubber dam

Publications (1)

Publication Number Publication Date
JPS57174511A true JPS57174511A (en) 1982-10-27

Family

ID=13103541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5909981A Pending JPS57174511A (en) 1981-04-21 1981-04-21 Rubber dam

Country Status (1)

Country Link
JP (1) JPS57174511A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61282508A (en) * 1985-06-10 1986-12-12 Bridgestone Corp Vibration-preventing flexible film dam

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581917A (en) * 1978-11-10 1980-06-20 Sumitomo Electric Ind Ltd Movable weir of flexible membrane with ant-oscillation device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581917A (en) * 1978-11-10 1980-06-20 Sumitomo Electric Ind Ltd Movable weir of flexible membrane with ant-oscillation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61282508A (en) * 1985-06-10 1986-12-12 Bridgestone Corp Vibration-preventing flexible film dam

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