村镇给水工程配水管网设计流量计算方法探讨

Discussion on calculation method of design flow of water distribution network in village and town water supply project

村镇用水人口分散,给水规模较小,依据现行的相关规范和规程设计的配水管网难以满足居民用水需求。在深入分析村镇给水工程规模与特点的基础上,基于概率论和数理统计理论,通过计算进户管流量及其概率分布,提出了适用于Ⅴ型村镇给水工程配水管网设计流量计算方法;通过分析不同给水规模村镇配水管网设计流量临界值,提出了适用于Ⅲ、Ⅳ型村镇给水工程配水管网设计流量的计算方法。以安徽省歙县溪头镇为例,说明了方法的合理性和可行性,为村镇配水管网设计流量计算提供了新的思路。

Villages and towns have scattered water users and smaller water supplies,and the water distribution network designed according to the relevant code and technical specification is difficult to meet the water demand of residents.Based on the analysis of the scale and characteristics of water supply project in villages and towns,the probability theory and mathematical statistics theory,by calculating the flow of the inlet pipe and its probability distribution,a flow calculation method for the design of water distribution network for water supply projects in V-type villages and towns was proposed.By analyzing the design flow threshold of different water supply scales,a flow calculation method for the design of water distribution network for water supply projects in villages and towns of type Ⅲ and Ⅳ was proposed.Taking Xitou Town,She County,Anhui Province as an example,the rationality and feasibility of the above method were illustrated,which provided a new idea for the design of flow calculation for water distribution network in villages and towns.