T型三通局部阻力研究进展概述

随着我国经济的快速发展，城市排水管网也日益庞大。T型三通作为管网中最基本的连接构件，其局部阻力特性严重制约着城市排水管网的输水能力，这也是如何合理设计城市排水系统的前提。结合近15年相关研究文献，总结目前该领域的研究成果，为更进一步的研究作出展望。

Summary of the Research Development of T-Junction Local Resistance

With the rapid development of economy in our country,urban drainage pipe network is also growing.The T-Junction is the most basic connection components in network,and its local resistance characteristics restricts the water conveyance capacity of the urban drainage network.It is also the premise of designing the city drainage system reasonably. Combining with the relevant research reference in nearly 15 years,the research achievements of this field are summarized,and prospect for further research is made.