污水倒虹管的设计案例探析

Design case analysis of sewage inverted Siphon

污水管道系统设计中,管道经常需要穿过河道、旱沟、洼地、地下构筑物等天然或人工障碍物。污水管道不能顺接上游管道标高径直通过时,一般设置倒虹管,按下凹折线方式,从障碍物下通过[2]。倒虹管容易淤积,后期维护管理较为复杂,因此,倒虹管是污水管道系统能否正常运行的关键节点。结合工程案例,介绍倒虹管工程概况,并总结倒虹管设计要点、水力计算及规范要求。

In the design of sewage pipeline system,the pipeline often needs to pass through natural or artificial obstacles such as river course,dry ditch,depression,underground structure,etc.,the pipe is passed under an obstruction by means of a concave fold line.The inverted Siphon pipe is easy to be silted up and the later maintenance and management is more complicated,so the inverted siphon pipe is the key node of sewage pipe system.Based on the engineering case,this paper introduces the general situation of inverted Siphon project,and summarizes the design essentials,hydraulic calculation and code requirements of inverted siphon.