南京市管网排水标准与水利排涝标准衔接关系研究

Study on the connection relationship between pipe drainage standard and river drainage standard in Nanjing City

城市地区管道排水标准与水利排涝标准缺乏有效衔接已成为形成内涝的主要原因,有必要深入探讨两者之间的关系。本次引入破坏率概念,选取南京市南京站作为雨量代表站,采用年最大值选样方法,深入考虑河道水位顶托对管网排水的影响,研究管网排水与水利排涝之间的重现期衔接关系。结果表明,在破坏率影响下,管道排水设计标准2a、3a、5a分别对应河道排涝标准10a、15a、20a,在压力流下可适当提高。

In recent years,the lack of effective connection between pipe drainage standard and river drainage standard has become the main reason of waterlogging in urban areas,so it's necessary to discuss the relationship between them. Introducing the concept of damage rate, Nanjing Station was selected as the rainfall representative station, and the annual maximum sample selection method was used to deeply consider the influence of river water level support on pipe network drainage, and to study the recurrence between pipe drainage standard and river drainage standard. The results showed that under the influence of damage rate,if the pipe drainage standards was 2a, 3a, and 5a,the corresponding design criteria of river channel was 10a, 15a, and 20a, and could be appropriately improved under the pressure flow.