一般喷灌管网多布置成树状网,其主要原因是环状网明显地较树状网的投资高,而且目前对树状管网的优化方法有一些理沦上的探讨可供参考应用。但环状网具有保证安全供水,压力分布均匀,可以实现无序轮灌等优点,且在多水源喷灌系统,特别在城市供水管网系统环状管网的设计,一般是根据 Sprinkler pipe network is usually arranged more dendrites, the main reason is that the ring network significantly higher investment than the dendritic network, and the current method of optimization of the tree network there are some derogatory discussions for reference. However, the annular network has the advantages of ensuring safe water supply, even pressure distribution and random flow irrigation. In many water sprinkler irrigation systems, especially in the urban water supply pipe network, the design of a ring pipe network is generally based on