过水建筑物通风掺气设计

The Ventilation and Aeration Design of Overflow Structures

泄水建筑物在大流量、高流速工况需设置掺气设施以减少气蚀破坏;大坝潜孔检修门与工作门之间需设置通、排气孔;压力管道进口闸门后亦应设置通、排气孔。

When the discharge is large and the fl ow velocity is high, it is necessary to install aeration facilities to reduce cavitation-caused damage for a fl ood discharging structure, and air vents and exhaust openings shall be provided between the submerged bulkhead gate and the service gate and so with the penstock entrance gates.