城市内涝成因与雨水管渠规划设计  

Causes of Urban Flooding and Design of Rainwater Pipes

作　　者：王震 Wang Zhen(Nanchang Urban Planning&Design Institute,Nanchang 330038,China)

机构地区：[1]南昌市城市规划设计研究总院,江西南昌330038

出　　处：《市政技术》2021年第12期105-108,共4页Journal of Municipal Technology

基　　金：2020年南昌市第二批科技计划项目“南昌市城市内涝防治与河湖水质调控工程技术中心”(2020-NCGCZX-005)。

摘　　要：近年来国内城市内涝频繁发生,给城市带来了巨大的损失。因此从城市规划、城市排涝系统、城市排水系统以及城市排涝系统与城市排水系统的标准衔接方面分析了形成城市内涝的原因。重点针对排水系统设计中存在的理论认知偏差,探讨了雨水管渠在不同出流情况下的设计方法,推导了淹没出流时的设计理论依据及设计思路。得出以下结论:在雨水淹没出流情况下,宜采用增加管渠断面、减小敷设坡度的方法保证雨水管渠的输水能力。In recent years,the frequent urban waterlogging have brought great losses to cities.Causes of urban flooding were analyzed from the aspects of urban planning,waterlogged drainage system,drainage system and standards connection.Focusing on the theoretical cognitive bias existing in municipal drainage system design,the design method of rainwater pipes under different outflow conditions were discussed,design basis and schemes of submerged discharge were deduced.The conclusion is that when the rainwater are submerged discharge,it is advisable to increase pipe sections and reduce laying slope to ensure the drainage capacity.

关 键 词：城市内涝 排涝系统 雨水管渠 淹没出流 

分 类 号：TU998.4[建筑科学—市政工程] TU992.23