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Air-filling type rubber dam is a kind of hydraulic structure , construction with advanced technology. A rubber dam is made of high Strength and good water resistance nylon canvas and aging durable compound rubber supported by a frame and prefabricated rubber,riveted store water. Discharge the water or air in the dam tube when no need to store water. Advantages of rubber dam are shorter construction period(final construction period 3-6 months).less engineering budget and it can save 40% than that of civil works. Rubber dam on the concrete base board to form a sealed bag shaped space inflated water or air to has the features of long service life, simplified maintenance and improved vibration resistance.
The rubber dam is suitable for the projects with lower water level and large span sluice, widely used for irrigation, power generation, flood control and urban landscaping.
The present trend suggests an increase duse of air-filled membranes because they can be deflated or inflated more rapidly, and they are little affected by freezing conditions.Characteristic dimensions cover typically lengths of about 100m with specially-made membranes up to 200m wide, dam heights usually less than 5m but some special designs might be up to 10m high. The membrane is usually deflated for large overflows.
item H | Internal and external pressure ratio | security coefficient | Bottom gaskets width | Dam bag perimeter | Dam bag model |
1.0 | 1.1 | 29.1 | 1.06 | 3.4 | JBD1.0-8080-2 |
1.5 | 1.1 | 13 | 1.45 | 4.9 | JBD1.5-8080-2 |
2.0 | 1.0 | 10 | 1.8 | 6.4 | JBD2.0-100100-2 |
2.5 | 0.9 | 11 | 2.2 | 7.8 | JBD2.5-120100-2 |
3.0 | 0.8 | 8.9 | 2.67 | 9.3 | JBD3.0-160140-2 |
3.5 | 0.8 | 8.98 | 3.12 | 10.85 | JBD3.5-220200-2 |
4.0 | 0.7 | 9.3 | 3.74 | 12.4 | JBD4.0-260240-2 |
4.5 | 0.7 | 9.04 | 4.1 | 13.85 | JBD4.5-320320-2 |
web site : www.huachenrubber.com
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