溢流池体型优化及泄流能力模型试验  

Optimization of overflow pool shape and model test of discharge capacity

作　　者：李宁霄 LI Ning-xiao

机构地区：[1]辽宁省河库管理服务中心,辽宁沈阳110000

出　　处：《东北水利水电》2021年第3期68-70,72,共4页Water Resources & Hydropower of Northeast China

摘　　要：按照重力相似准则,采用正态模型,建立溢流池水工模型,模拟原型溢流池的水力条件,观察不同溢流流量下溢流水深以及溢流池外连接池水深,观察溢流通道水流有无掺气和气阻,通过不同方案的对比试验,优化溢流池体型设计。试验发现,采用连接池与出水管道平滑过度的方案,能够有效地减少气阻和掺气,同时避免了水跃。为工程设计提供技术支撑,也为类似工程提供参考。According to the gravity similarity criterion,the normal model was adopted to establish the hydraulic model of the overflow pool to simulate the hydraulic conditions of the prototype overflow pool,observe the overflow water depth under different overflow flow rates and the water depth of the connecting pool outside the overflow pool,and observe whether the flow in the overflow channel is aerated and blocked.The shape design of overflow pool is optimized through the comparison test of different schemes.It is found that the smooth transition scheme of connecting pool and outlet pipe can effectively reduce the air resistance and aeration,and avoid the water jump.It provides technical support for engineering design,and also provides reference for similar projects.

关 键 词：溢流池 模型试验 体型优化 掺气 

分 类 号：TV652.1[水利工程—水利水电工程]