丰乐河“2018.08.20”暴雨洪水调查及分析

Investigation and Analysis of“August 20,2018”Rainstorm Flood in Fengle River

通过调查分析丰乐河“2018.08.20”暴雨洪水,暴雨中心雨量96.5 mm,暴雨历时4 h;根据暴雨中心及外围雨量站点同步降水资料绘制等雨量线显示,20 mm以上暴雨量笼罩面积2 500 km^(2);分析计算暴雨的稀遇程度,1 h、3 h雨量的重现期均为100年一遇,6 h雨量的重现期为50年一遇。此次暴雨研究对研究该流域的防汛和洪水灾害防治工作具有十分重要的意义。

Based on the investigation and analysis of the“August 20,2018”rainstorm flood in Fengle River,the rainfall in the rainstorm center is 96.5 mm,and the rainstorm lasts for 4h.According to the synchronous precipitation data of the rainstorm center and peripheral rainfall stations,the isohyet line was drawn to show that the area covered by the rainstorm above 20 mm was 2500 km^(2).Analyze and calculate the rare occurrence degree of rainstorm.The return period of 1h and 3h rainfall was 100 years,and the return period of 6h rainfall was 50 years.The study of this rainstorm was of great significance to the study of flood control and flood disaster prevention in the basin.