前海-南山排水深隧排涝泵站规模研究

Research on scale of Qianhai-Nanshan drainage deep tunnel drainage pumping station

深层排水隧洞是解决高密度城区内涝问题的一种方式,其规模确定不同于传统浅层排涝系统。以深圳市前海-南山片区的内涝治理方案为例,介绍了在前期工作过程中,利用MIKE URBAN数值模拟软件建立排水管网数学模型,进行片区排水能力评估、内涝成因分析以及深隧系统规模研究的工作。结果表明:深层和浅层排水系统的共同作用可有效提升城市排水系统内涝防治标准;排水深隧系统的线内调蓄作用,相对于传统的浅层排水系统,可大幅缩小泵站设计规模。

Deep drainage tunnels are a way to solve the flooding problem in high-density urban areas,and their scales are determined to be different from traditional shallow drainage systems..This paper takes the flood control scheme of Qianhai-Nanshan area of Shenzhen City as an example,and introduces the work of using MIKE URBAN numerical simulation software to establish the mathematical model of drainage network and conduct the assessment of drainage capacity of the area,analysis of the causes of flooding and the study of the scale of deep tunnel system during the preliminary work.The results show that the drainage deep tunnel project can cope with the problem of top support of water level outside the drainage trunk canal,the combined effect of deep and shallow drainage systems can effectively improve the standard of urban drainage system flood control;The in-line regulating effect of the deep drainage tunnel system can significantly reduce the design capacity of pumping stations compared to the traditional shallow drainage system.