【摘要】 根据用水流量的变化 ,在考虑加压泵站分级供水的基础上 ,针对网前水塔树状管网系统各组成部分的压力和流量关系 ,以管网系统年费用最小为目标函数 ,建立了这一类型管网系统优化设计的线性规划模型。应用所建立的优化设计模型 ,在保证管网系统各节点所需流量和压力条件下 ,可确定输水管段和配水管段尺寸、水塔高度和泵站扬程的最优值 ,获得网前水塔树状管网系统的优化设计方案更多还原

【Abstract】 The branch networks are widely applied to the water supply engineering in villages and towns .Based on the variation of system flow rate, the linear programming model,with the lest system annual cost as an objective function, was presented to optimize branch network with water tower ahead of network. In accordnce with the demand for the hydraulic pressure and discharge of network nodes, the dimensions of network, the lift of pump and the height of water tower were determined, thereby the optimal design of branch network with water tower ahead of network was gained based on the linear programming model.更多还原