摘要
采用非恒定输沙洪水演进数学模型,开展了黄河下游河道1997年汛期洪水演进预测、1998年汛期洪水演进实时作业预报、2002年调水调沙跟踪模拟、“04.8”洪水演进过程中洪峰异常增值现象模拟等计算,为当年汛期防洪调度提供了重要参考数据。计算结果与洪水过后当年实测资料对比认为,该模型能准确模拟出黄河下游河道洪水水沙演进传播过程、沿程水位变化过程及河道冲淤演变过程,并能较好的预测出洪水演进过程中出现的异常现象,计算精度能够满足汛期防洪的要求。
With a numerical model for unsteady sediment transport during flood routing, work is done to hindcast the flood routing through the lower Yellow River during the flood season in 1997 .the real-time flood routing during the flood season in 1998, the process of flow and sediment transport during the flow and sediment regulation in 2002 and a phenomenon of the abnormal flood peak increment during the process of “04.8” flood. Comparison of the calculated and measured values shows the model can precisely simulate the processes of flow and sediment trartsport, flow level variation, erosion and deposition. In addition, the model can predict the abnormal phenomena in the course of flood routing. The precision of calculated results is found good enough to satisfy the need for flood control in flood seasons.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2007年第1期6-12,共7页
Journal of Sichuan University (Engineering Science Edition)
基金
国家自然科学基金委员会和黄河水利委员会黄河联合研究基金资助项目(50339020)
关键词
黄河下游河道
预报
洪水演进
洪水位
the lower Yellow River
prediction
flood routing
flood level
