武汉东沙水系初雨调蓄系统汛期调度方案研究

Research on operation scheme of early rain regulation and storage system of Dongsha River System in flood season in Wuhan

为了降低东湖、沙湖区域渍涝风险，减少两湖水污染，根据东沙水系排涝工程设施及管网构造现状，进行区域排水规格复核，建立了区域排涝计算模型。并且提出了汛前、汛中及汛后排涝调度方案，以及东湖、沙湖正常控制水位要求。结果表明，在保持东湖正常水位时，东沙水系湖泊调蓄容积与外排泵站的排涝能力较强，可抵御20-30 a一遇暴雨。研究成果对东、沙两湖区域排水调度有一定的实际指导意义。

In order to reduce the risk of water logging in Donghu Lake and Shahu Lake region and pollution of the two lakes, according to the construction situation of drainage project and pipe network, the drainage scale in this region was rechecked and the drainage calculation model was established. The operation scheme before, in and after the flood season was put forward, so were the requirement of normal water level of Donghu Lake and Shahu Lake. The results show that under normal water level of Donghu Lake, the storage capacity of lakes and drainage capacity of pumping stations of Dongsha River System are relatively strong, which can resist rainfall of 20-year to 30-year recurrence. The results are helpful for drainage regulation in Donghu Lake and Shahu Lake region.