JPS57180708A - Falling device for flexible film dam - Google Patents
Falling device for flexible film damInfo
- Publication number
- JPS57180708A JPS57180708A JP6427481A JP6427481A JPS57180708A JP S57180708 A JPS57180708 A JP S57180708A JP 6427481 A JP6427481 A JP 6427481A JP 6427481 A JP6427481 A JP 6427481A JP S57180708 A JPS57180708 A JP S57180708A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- float
- dam
- flexible film
- extroadinary
- 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
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 a simple and reliable falling of a flexible film dam, by a method wherein a control member for opening and shutting a discharge valve, discharge fluid in the film dam, is mounted to a water level detecting device which is constituted such that it is caused to fall due to an extroadinary high water level at the upstream of the flexible film dam. CONSTITUTION:When a water level at an upstream side of a rubber dam 1 reaches an extroadinary water level 1 due to a localized torrential downpour, a water level 17a in a water level tank 5 also rises to exert buoyancy on a float 7. A weight 8 eccentrically positioned is attached to the top surface of the float 7, and thereby, the float 7 falls at a stretch. Then, the center of gravity of the float 7 is positioned at a lower part to pull downward a wire 15 through the gravity of the float, a lever 14 rocks downward to release an exhaust valve 13, and pressure air in the rubber dam 1 is exhausted into the air, which results in causing the rubber dam to fall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6427481A JPS57180708A (en) | 1981-04-30 | 1981-04-30 | Falling device for flexible film dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6427481A JPS57180708A (en) | 1981-04-30 | 1981-04-30 | Falling device for flexible film dam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57180708A true JPS57180708A (en) | 1982-11-06 |
Family
ID=13253469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6427481A Pending JPS57180708A (en) | 1981-04-30 | 1981-04-30 | Falling device for flexible film dam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57180708A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100489120B1 (en) * | 2001-11-28 | 2005-05-17 | 현대자동차주식회사 | Thermostant to control cooling water flowing |
| JP2007113170A (en) * | 2005-10-18 | 2007-05-10 | Alex 2000 Srl | Air permeable knit socks |
| US7677061B2 (en) | 2004-09-30 | 2010-03-16 | Okamoto Corporation | Socks of multi-stage pile structure |
-
1981
- 1981-04-30 JP JP6427481A patent/JPS57180708A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100489120B1 (en) * | 2001-11-28 | 2005-05-17 | 현대자동차주식회사 | Thermostant to control cooling water flowing |
| US7677061B2 (en) | 2004-09-30 | 2010-03-16 | Okamoto Corporation | Socks of multi-stage pile structure |
| JP2007113170A (en) * | 2005-10-18 | 2007-05-10 | Alex 2000 Srl | Air permeable knit socks |
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