JPS57190816A - Device for preventing production of excessive pressure in flexible film dam - Google Patents

Device for preventing production of excessive pressure in flexible film dam

Info

Publication number
JPS57190816A
JPS57190816A JP7478881A JP7478881A JPS57190816A JP S57190816 A JPS57190816 A JP S57190816A JP 7478881 A JP7478881 A JP 7478881A JP 7478881 A JP7478881 A JP 7478881A JP S57190816 A JPS57190816 A JP S57190816A
Authority
JP
Japan
Prior art keywords
dam
pipe
intake
pressure
air
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
JP7478881A
Other languages
Japanese (ja)
Inventor
Nobuo Inoue
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 JP7478881A priority Critical patent/JPS57190816A/en
Publication of JPS57190816A publication Critical patent/JPS57190816A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Barrages (AREA)

Abstract

PURPOSE:To enable to perform an easy operation and maintenance of a device, by a method wherein, in a titled device for use with seawater dam at estuary, a water storage part is formed at an intake and exhaust system to and from a film dam, and a water storage part is placed underwater at the upstream side of the film dam. CONSTITUTION:If air is fed through an intake and exhaust pipe 7, a rubber dam 1 starts to rise up. If a water level of dammed water 11 is positioned higher than a forward end opening 10b of a pipe 10, a seal pressure in the intake and exhaust pipe 7 is brought to H for a head conversion. When the air pressure in the rubber dam 1 attains about a maximum allowable pressure, air is diffused into the air through the water 11 from the pipe 10. If rising of the rubber dam 1 is approximately complete, the intake and sicharge pipe 7 is reduced in an air amount flowing therein, and the pressure in the rubber dam 1 approximates to the pressure in the pipe 10. As a result, when an intake valve is closed, a blower 5, simultaneously, suspends operating, and this completes the rising of the rubber dam 1.
JP7478881A 1981-05-20 1981-05-20 Device for preventing production of excessive pressure in flexible film dam Pending JPS57190816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7478881A JPS57190816A (en) 1981-05-20 1981-05-20 Device for preventing production of excessive pressure in flexible film dam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7478881A JPS57190816A (en) 1981-05-20 1981-05-20 Device for preventing production of excessive pressure in flexible film dam

Publications (1)

Publication Number Publication Date
JPS57190816A true JPS57190816A (en) 1982-11-24

Family

ID=13557371

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7478881A Pending JPS57190816A (en) 1981-05-20 1981-05-20 Device for preventing production of excessive pressure in flexible film dam

Country Status (1)

Country Link
JP (1) JPS57190816A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6162928U (en) * 1984-09-29 1986-04-28
US6467999B2 (en) * 2000-03-28 2002-10-22 Bridgestone Corporation Internal pressure regulating system for flexible bag body, flexible membrane dam using the same, and method for regulating internal pressure in the flexible membrane dam

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6162928U (en) * 1984-09-29 1986-04-28
US6467999B2 (en) * 2000-03-28 2002-10-22 Bridgestone Corporation Internal pressure regulating system for flexible bag body, flexible membrane dam using the same, and method for regulating internal pressure in the flexible membrane dam
EP1143073A3 (en) * 2000-03-28 2003-03-05 Bridgestone Corporation Method and device for regulating the internal pressure of flexible membrane dam

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