由于城市内涝防治系统涉及专业多、工程建设时序不确定等原因,给新区建设过程中统筹考虑区域排水防涝安全带来较大的难度.以东南某城市新建区域为例,在研究区域原市政工程建设方案的基础上,开展汇水分区、新建道路高程设计、新建排水设计、设置调蓄绿地(公园)等市政工程设计优化,提高了新建管道的排水效益,增设超标雨水的行泄通道和调蓄空间,从而完善区域内涝防治系统,有效降低区域的内涝风险;同时从高程设计、挖填方量、道路纵坡等方面分析优化措施的可实施性.%Constructing a urban flooding prevention and control system in a new area is difficult,because it is involved to many engineering majors and the time of project construction sequence is uncertainty.A.newly-built area in southeast China is taken as an example,based on studying deeply its original municipal constructive plan,the measures such as optimization of catchment,road elevation,newly-built drainage system,and some detention green-area (park) are proposed,which enhance urban flooding prevention and control system and reduce the local flooding risks effectively.Meanwhile,the feasibility of the optimized measures was analysis from different aspects:elevation design,cut-fill volumes,and longitudinal slope etc.
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