基于海绵城市理念的城市内涝防治设计

Design for Urban Waterlogging Prevention and Control Based on the Sponge City Concept

摘要:

为解决陕西省兴平市城区某雨水泵站超负荷运行及站前道路积水问题，在既有泵站规模不变的条件下，探索一种可持续的排水防涝设施更新模式，以提升城市韧性。为此，基于海绵城市理念，构建了“调蓄+水质净化+景观提升+水资源利用”模式的调蓄湿地，利用既有排水系统与新建调蓄设施之间的动态联动，有效削减雨水峰值流量，缓解泵站运行压力；同时将污水处理厂尾水纳入循环利用体系，同步实现水质净化、景观提升和水资源利用。实践证明，该模式能有效提升城市排水防涝能力，改善区域水环境状况，提高水资源利用效率，为同类城市在有限条件下更新排水防涝设施、提升城市韧性提供参考和借鉴。

Abstract:

To address the overloading operation of a rainwater pumping station and road waterlogging in the urban area of Xingping City, Shaanxi Province, a sustainable renewal model for drainage and waterlogging prevention facilities was explored under the condition of maintaining the existing scale of the pumping station, aiming to enhance urban resilience. A regulation and storage wetland with the model of “regulation and storage+water quality purification+landscape enhancement +water resource utilization” was constructed based on the sponge city concept. By leveraging the dynamic interaction between the existing drainage system and the newly constructed storage facilities, the peak rainwater flow was effectively reduced, alleviating the operational pressure on the pumping station. Additionally, the treated tailwater from the sewage treatment plant was incorporated into the recycling system, simultaneously achieving water quality purification, landscape enhancement, and water resource utilization. The results demonstrate that this model effectively improves urban drainage and waterlogging prevention capacity, enhances regional water environment conditions, and increases water resource utilization efficiency, providing a reference for similar cities to update drainage and waterlogging prevention facilities and enhance urban resilience under limited conditions.