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通过对2012年8月20日典型强降雨造成的积涝点统计,对合肥市中心城区内涝积水的分布情况及其主要影响因素进行了归纳分析,进而提出了主要工程改善策略:“蓄排协同”提高已建城区排水管网的排水标准;规划设计超标雨水蓄排系统。针对两个典型工程案例,运用水力学模型等手段,分析了主要积涝成因,进行了主要工程改善策略的技术应用,并对其效果进行了模拟分析。结果表明,蓄排协同管道系统与超标雨水蓄排系统能够应用于合肥市排水系统的升级改造,可解决已建排水系统提标改造的技术瓶颈。
Based on the statistics of floodplain caused by typical heavy rainfall on August 20, 2012, the distribution of waterlogging in Hefei downtown area and its main influencing factors are summarized and analyzed, and then the main engineering improvement strategies are put forward: Row synergy "to improve the drainage standards of urban drainage network has been built; planning and design excessive rainfall storage system. According to the two typical project cases, the causes of major floods are analyzed by means of hydraulic model and other techniques. The technical application of major engineering improvement strategies is carried out, and the effect is simulated. The results show that the synergistic pipeline system and the rainwater storage system can be applied to the upgrading of the drainage system in Hefei, which can solve the technical bottleneck of upgrading the drainage system.