中国防汛抗旱2024，Vol.34Issue(10)：35-39,5.DOI:10.16867/j.issn.1673-9264.2023386
沁河下游洪水还原模拟分析
Simulation analysis of flooding in lower Qinhe River—A case study of July 2021 flood
摘要
Abstract
In July 2021,the lower Qinhe River was affected by the severe typhoon In-Fa,which caused heavy rainfall and the largest flood occurred since 1982,the Hekou village reservoir played a huge role in the flood regulation process.In order to simulate and analyze the flood process of the lower Qinhe River in July 2021 without the Hekou village reservoir,a two-dimensional hydrodynamic model was established using the MIKE21.The results showed that the peak-cutting effect of the Hekou village reservoir was significant.Compare with no Hekou village reservoir,the number of peak flood events at Wuzhi hydrological station decreased from 3 times to 2 times and the magnitude of flood peaks also decreased significantly,and the peak flow rates also decreased from 1 727 m3/s,1 773 m3/s,and 1615 m3/s to 368 m3/s and 1 510 m3/s.The duration of high flow during the flood process was also influenced by the reservoir′s peak-cutting effect,the duration of flow above 1 200 m3/s decreased from 49 h to 24 h,and the duration of flow above 1 500 m3/s even decreased from 25 h to 0.The Hekou village reservoir has also improved the situation of flood-sustained areas in the lower Qinhe River.The inundation areas in the natural overflow area of the north qinyang and the lower Qinhe River have been decreased by 1 575.33 hectares and 473.73 hectares respectively.The research results can provide technical support for flood prevention work in the lower Qinhe River.关键词
沁河下游/MIKE21模型/洪水模拟/防洪减灾Key words
lower Qinhe River/MIKE21 model/flood simulation/flood control and disaster reduction分类
水利科学引用本文复制引用
臧明,王刚,郑钊..沁河下游洪水还原模拟分析[J].中国防汛抗旱,2024,34(10):35-39,5.基金项目
黄委优秀青年人才科技项目(HQK-202302) （HQK-202302）
国家自然科学基金黄河水科学研究联合基金(U2243219) （U2243219）
中国水利水电科学研究院流域水循环模拟与调控国家重点实验室开放研究基金(IWHR-SKL-202104). （IWHR-SKL-202104）
