城市山洪风险分析及规划应对

Risk Analysis and Planning Response of Urban Flash Flood

近年来随着我国城市化进程的快速推进,城市山体资源被无序开发,大量河道、山塘、洼地未被重视而肆意破坏。以苏州高新区为例,在山洪风险分析的基础上,规划对风险较高区域采取水系优化、山塘及城市洼地修复、雨水管道及山体截洪沟建设、公共海绵设施布局等山洪综合防治措施,以缓解山洪和城市内涝风险。在规划过程中利用雨洪管理模型对规划方案进行评估,进一步提高了规划的合理性和科学性。

In recent years,with the rapid development of urbanization process in China,urban mountain resources have been disorderly constructed,and a large number of rivers,ponds and low-lying lands have been neglected and vandalized.Taking Suzhou High-teeh Zone as an example,comprehensive prevention measures such as water system optimization,the protection and renovation of ponds and low-lying lands,construction of storm sewer and mountain interception ditch,and the layout planning of public sponge facilities were carried out in high risk area based on risk analysis of flash flood,which meant to alleviate flash flood and urban waterlogging risk.During the planning process,stormwater management model was used to evaluate the planning scheme,which further improved rationality and scientificity of the planning.