LIUYuan-yuan,WANGWen-yan,LIJin-feng.Systematic Solutions to the Dual Risks of Typical Floods in Hongyan Park, Chongqing[J].China Water & Wastewater,2025,41(18):43-47.
重庆红岩公园洪涝双重风险的系统化解决对策
- Title:
- Systematic Solutions to the Dual Risks of Typical Floods in Hongyan Park, Chongqing
- Keywords:
- mountain city; drainage and waterlogging prevention; flood backward; low impact development facilities
- 摘要:
- 红岩公园为重庆典型的山坳区域，内有国家级文物《新华日报》总馆旧址，常年面临洪水倒灌以及山体径流涝水带来的双重风险，2020年8月长江、嘉陵江洪峰过境时遭受了1981年以来最严重的洪涝灾害，对文物造成严重损害，故亟须治理。针对红岩公园实际洪涝问题，通过InfoWorks ICM构建区域排水系统模型，进行高水截排，缓解低水排水压力；在地下空间局促的条件下，充分利用低影响开发设施作为涝水缓冲区域，减少地表径流，从而减小强排设施的体量；通过多级阀门联控，确保行洪期间场地排水的绝对安全。该项目完成后经受住了多次暴雨及洪峰的检验，未出现积水情况，在应对洪涝双重风险的同时，实现了海绵城市建设、景观提升等多重目标，可为其他山地城市提供参考。
- Abstract:
- Hongyan Park, a typical mountainous area in Chongqing, houses the former site of the national cultural relic “Xinhua Daily”. The park faces the dual risks of flood backflow and waterlogging caused by mountain runoff all year aroud. In August 2020, when the flood peak passed through, the park suffered the most severe flooding disaster since 1981, causing serious damage to cultural relics. Therefore, there is an urgent need for mitigation measures. Regarding the actual flood and waterlogging issues in Hongyan Park, InfoWorks ICM was used to develop a regional drainage system model. Through analysis of this model, high water interception was implemented to alleviate drainage pressure in lower areas. Given the limited underground space, low impact development facilities were fully utilized as flood buffer areas to reduce surface runoff and the required size of forced drainage infrastructure. The absolute safety of site drainage during flood control is ensured through the joint control of multi-stage valves. Since completion, the project has withstood multiple heavy rains and flood peaks without any water accumulation. By mitigating the dual risks of floods, the project has achieved multiple objectives, including sponge city construction and landscape improvement, offering a valuable reference for other mountain cities.
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