滁河襄河口以上2020年洪水应对措施思考  

Reflections on countermeasures against 2020 flood above Xianghekou sluice of Chuhe River

作　　者：游中琼 彭兴 YOU Zhongqiong;PENG Xing(Changjiang Survey,Planning,Design and Research Co.,Ltd,Wuhan 430010,China)

机构地区：[1]长江勘测规划设计研究有限责任公司,湖北武汉430010

出　　处：《人民长江》2020年第12期160-165,共6页Yangtze River

基　　金：国家自然科学基金青年基金资助项目(41701076)。

摘　　要：2020年7月,受滁河流域强降雨影响,在运用荒草二圩、荒草三圩等2个蓄滞洪区的情况下,滁河干流襄河口闸上仍出现超历史的最高水位。根据近年来的洪水资料,在对滁河洪水特性与长江干流洪水遭遇特点等分析的基础上,梳理了2020年洪水防御过程中襄河口闸以上防洪存在的主要问题,并分析了产生超高水位的原因。研究表明:2020年滁河襄河口以上出现历史最高水位的原因主要还是来水偏大。提出了相应的应对措施建议:通过改建新建一批分洪河道、泵站、河道整治过程,增大河道下泄能力;增加上游水利工程调蓄能力,减少汇入干流的水量。相关成果可为滁河流域防洪规划修编提供技术支撑。In July 2020,due to the strong rainfall in the Chuhe River Basin,the water level of Xianghekou sluice on the main stream of the Chuhe River reached a record high,despite the use of flood storage and detention areas including Huangcaoer polder and Huangcaosan polder.Based on the recent flood data,we analyzed the characteristics of the Chuhe River flood and flood encounters with the mainstream flood of the Yangtze River,then sorted out the main problems of flood control above Xianghekou sluice in 2020.The results showed that the main reason of the highest historical water level of Chuhe River in the upper reaches of Xianghekou in 2020 was the huge flow at upstream.According to this situation,we put forward corresponding countermeasures and suggestions such as constructing or transforming some flood diversion channels,pumping stations and channel harnessing projects to enhance the discharge capacity of river channel,and increasing water storage of upstream reservoirs to reduce discharge flow.The results can provide technique support for revising the flood control plan of Chuhe River.

关 键 词：滁河 洪水特性 蓄滞洪区 襄河口闸 

分 类 号：TV147[水利工程—水力学及河流动力学]