2022年西江4次编号洪水还原分析

Reduction analysis of four numbered floods of Xijiang River occurred in 2022

2022年5月下旬~6月下旬,西江流域连续发生多次强降雨过程,造成西江形成4次编号洪水,为2008年有编号洪水记录以来,编号次数最多的年份。通过流域内水库联合调度,西江梧州水文站从近10年一遇较大洪水,降低为2~5年一遇的常遇洪水。本文对2022年西江4次编号洪水进行了还原分析计算,总结西江河库预报调度经验,为今后更好的开展西江防洪工作提供参考。

Xijiang River Basin experienced several consecutive heavy rainfall processes from late May to late June2022, which led to four numbered floods in Xijiang River. 2022 is the year with the maximum times of numbered floods since 2008, the first year with numbered flood record. Through joint regulation of reservoirs in the basin, a big flood once in 10 years occurred at Wuzhou Hydrological Station was reduced to a frequent flood once in 2~5years. Reduction analysis calculation was conducted for the four numbered floods of Xijiang River occurred in2022, based on which the author summarized the forecasting and regulation experience of Xijiang River and reservoirs, so as to provide reference for better flood protection of Xijiang River.