流域尺度下城市海绵综合体探索:水环境综合治理工程

Exploration on Systematic Construction Pattern of Sponge City at theWatershed Scale: A Case of Water Environment Systematic Treatment inWuyuan Bay Watershed

面对日益复杂化、综合化的城市涉水问题,构建城市海绵体系,打造城市海绵综合体为城市水问题的综合解决提供了新的思路。结合五缘湾流域水环境综合治理工程实践,以水环境综合治理为切入点,拓展海绵城市建设新思路,系统统筹流域范围内开展的管网溯源排查、污水工程建设、正本清源改造、排水防涝、源头海绵化改造、湿地公园建设以及排水管网“一张图”数字化管理系统建设等各类整治工作,探索构建流域尺度下“控源截污、海绵城市、排水防涝、长制久清”的城市海绵综合体建设模式和实施路径,实现流域综合整治、天然海绵体保护修复、生态景观营造、城市基础设施建设相互融合,以期为流域水环境综合治理和海绵城市建设的统筹协调工作提供参考。

Confronted with the growing complexity and multifaceted nature of urban water-related problems,the construction of urban sponge city system,creating the systematic constructic pattern of sponge city may offer a novel perspective for the comprehensive solution to urban water issues.Taking the practice of water environment systematic treatment in Wuyuan Bay watershed as an example,this paper probes into the systematic construction pattern of sponge city.This model adopts the comprehensive management of the water environment as an entry point,to broaden the horizons of sponge city construction with new ideas.It employs system thinking to determine the pipeline network traceability investigation,sewage works,the original source of renovation,drainage and flood prevention,source sponge renovation,wetland parks construction,as well as development of a digital management system for the drainage network.The development mode and implement path of the systematic construction pattern of sponge city are explored with the concept of“source control and pollution interception,sponge city,drainage and flood prevention,long term governance”at the watershed scale.The aim is to achieve the integration of comprehensive remediation of watersheds,natural sponge protection and restoration,ecological landscape creation,urban infrastructure construction.This paper can provide a reference for the overall coordination of water environment systematic treatment and sponge city construction.