淹没出流状态下市政雨水管道壅水高度研究  

Research on Backwater Height of Municipal Rainwater Pipeline under Submerged Outflow State

作　　者：彭明 PENG Ming(Guangdong Foundation Engineering Group Co.,Ltd.,Guangzhou 510000,Guangdong,China)

机构地区：[1]广东省基础工程集团有限公司,广东广州510000

出　　处：《工程技术研究》2024年第22期15-17,30,共4页Engineering and Technological Research

摘　　要：在市政雨水管道工程中,雨水管道出水口低于河道洪水位甚至是常水位的现象时有发生,雨水管道出水口处于淹没出流的状态,此时雨水管道及检查井内水位壅高的问题往往容易被忽略,从而导致雨水管道管径无法满足淹没出流状态下的排水需求。文章结合水力学理论,推导淹没出流状态下管道系统壅水高度的计算公式,结合工程实例,详细说明计算的壅水高度大于最大允许壅水高度的解决方案,并对不同的解决方案进行方案比选,提出经济、可行的解决措施,以保障雨水管道系统在淹没出流状态下的排水安全。In the municipal rainwater pipeline engineering,the phenomenon that the outlet of rainwater pipeline is lower than the fl ood level or even the normal water level of the river occurs from time to time,the rainwater pipeline outlet is in the state of submerged outflow,and the problem of high backwater level in rainwater pipeline and inspection well is often ignored at this time,which leads to the diameter of rainwater pipeline unable to meet the drainage demand in the state of submerged outfl ow.Based on the hydraulics theory,this paper deduces the calculation formula of the backwater height of the pipeline system under the submerged outflow state.Combined with the engineering example,it explains in detail the solution that the calculated backwater height is greater than the maximum allowable backwater height,and compares different solutions to put forward economic and feasible solutions to ensure the drainage safety of the rainwater pipeline system under the submerged outfl ow state.

关 键 词：雨水管道 壅水高度 淹没出流 

分 类 号：TU992[建筑科学—市政工程]