| 摘要 |
PURPOSE:To clean up the water of a dam by a simple facility in which a sheet material having an opening is hung down from a place higher than the intake level down to the temperature-changing layer and a precipitation accelerator is dispersed from a disperser provided to the sheet. CONSTITUTION:The flow of water is interrupted by the sheet 24 of a water disturbance preventive fence 18 and passed through an opening 26 to an intake port 16 with partly increased speeds. When a liquid precipitation accelerator from the nozzle 30 of a grout injection pipe 28 is dispersed, the precipitation accelerator is mixed with stirring by local rapid stream and Kalman swirl generated in the neighborhood of the opening 26, thereby accelerating the aggregation and precipitation of suspended particles in turbid water to clean up it. |
