The Comparison of Air filling Rubber Dam and Water Filling Rubber Dam
There are many purpose of rubber dam which can be used for hydraulic power station and extend the storage capability of existing concrete dam. It also can be used for irrigation purpose and landscape in cities.In these applications, customers could choose air filling rubber dam or water filing rubber according to different purpose and detailed situation.
| Item | Water Filled Rubber Dam | Air Filling Rubber Dam |
Outside air temperature | The internal water of rubber bladder would be frozen in cold temperature | The internal pressure would change when temperature changes greatly |
| In hot Area | The internal water could reduce the outer surface temperature of rubber bladder and prolong the rubber dam service life | The internal pressure would be very high |
Circumference length of rubber bladder | longer | shorter |
Loading concrete foundation | Longer with high cost | Shorter with lower cost |
Max. Overflow height | 50% of dam height | 30% of dam height |
Stability of rubber bladder during operation | Stable | Would vibrate.The vibrasion will be reduced if there is deflector design |
Inflation and deflation time | Longer time | Shorter time |
Inflation and deflation pipe | Pipe diameter is bigger | Pipe diameter is smaller |
Application in hydraulic power station | Could adjust the upriver level according to adjust dam height | Could not adjust upriver water level |
Build in spillway of hydraulic power station | Could not if the spillway is not horizontal | Could |
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