杭州三堡排涝泵站排水口防护方案优化研究

Optimization of Sanbao Drainage Pumping Station's Protection Program in Hangzhou

杭州三堡排涝泵站作为与京杭运河主要交通枢纽-杭州三堡船闸相结合的大型水利枢纽工程,在工程设计过程中必须科学合理处理好两者间的关系。以二线船闸下游引航道作为研究对象,通过物理模型试验方法研究分析了大流量排涝时航道内水流流态和流速分布情况以及河床的冲淤变化,在此基础上对航道防护方案进行优化,达到了减少泵站施工期和运行期对航道的不利影响和保证航道安全、节约投资等目的。

Hangzhou Sanbao Drainage Pumping Station is a large water control project combined with Hangzhou Sanbao Navigation Lock,a major transport hub of Beijing-Hangzhou Grand Canal.In the process of project design the rational relationship between the drainage pumping station and the lock must be handled scientifically.In this paper,the downstream approach channel of two-tier navigation lock is studied.When a large flow of drainage appears,the flow pattern and velocity distribution in channel,as well as changes in river bed erosion and deposition,are studied through the physical model test method.The channel protection program is optimized based on this method.So the adverse effect of the construction of pumping stations on the channel is reduced,Waterway safety is ensured,and investment purposes are realized.