深层隧道排水系统中深隧泵站的设计与优化

武汉市大东湖核心区污水传输系统工程采用深层隧道排水系统,隧道末端为北湖深隧泵站,其设计规模为100×10⁴m³/d,为压力流泵站,地下深度为46.35 m,净提升高度为16.1~22.4 m。泵组采用6台离心泵(4用2备),单泵流量Q=2.79~3.87 m³/s,水泵扬程H=196.3~304.4 k Pa。在北湖深隧泵站的设计过程中,采用了计算流体动力学(CFD)模拟分析、物理模型试验、水锤分析及结构振动分析等方法,并根据分析结果对其设计方案进行了优化。

Design and Optimization of the Deep Tunnel Pumping Station in Deep Tunnel Drainage System

A deep tunnel drainage system was applied in the sewage transmission system project of Wuhan Dadonghu Core Area.The end of the tunnel is the Beihu deep tunnel pumping station,with a design capacity of 100×10⁴m³/d.It is a pressure flow pumping station with underground depth of 46.35 m and net lifting height of 16.1-22.4 m.Six centrifugal pumps,including 4 working pumps and 2 spare pumps,were applied,and the working range was Q=2.79-3.87 m³/s and H=196.3-304.4 kPa.In the design of the Beihu deep tunnel pumping station,the computational fluid dynamics(CFD)simulation analysis,physical model test,water hammer analysis and structural vibration analysis were used.According to the analysis results,the design scheme was optimized.