雨水管网管段流量调节池优化设计

Research on optimization design of retention basin in rainwater pipe network

雨水资源化是我国建立两型社会、缓解我国缺水现状所值得研究的一个重要方向,而在雨水管网中建立管段流量调节池是解决雨水利用、降低雨水管网造价必须解决的一个首要问题.通过对暴雨强度公式进行时程分配,并通过对地表产流、汇流以及雨水管网汇流的模拟演算,分析了雨水管网的流量过程,建立了雨水管网的流量过程线,并据此建立了雨水管网管段流量调节池的容积计算方法与优化思路,最终以雨水管网系统总造价为目标函数,对管段流量调节池的设置位置及容积计算进行了优化分析,给出了雨水管网管段流量调节池容积优化的计算过程与方法,并通过实例工程对其进行了验证,结果表明采用此方法设置管段流量调节池,经济效果明显.

To build China＇s Two-Oriented Society and mitigate the water shortage situation,rainwater reuse is an important research direction.To solve the problem of rainwater reuse,and reduce the cost of rainwater pipe networks,it is important to establish a retention basin in rainwater pipe network.Through the duration allocation of rainstorm intensity formula and simulation calculation of surface runoff,flow concentration,and rainwater pipe network concentration,the flow process and hydrograph of the rainwater pipe network are analyzed and given.Based on these,the thought of volume calculation and optimization methods of retention basin is proposed.And then,taking a rainfall-pipe network system＇s total cost as the objective function,the location and volume calculation of the retention basin are analyzed.Finally,a calculation process and method for the volume optimization of retention basin is given.And this process and method is verified by an engineering case.The results show that this method has significant economic effect.