泥沙研究2023，Vol.48Issue(6)：30-37,8.DOI:10.16239/j.cnki.0468-155x.2023.06.005
黄河下游河道泥沙不均衡调整及其对水沙条件的响应
Imbalance adjustment of sediment in the Lower Yellow River and its response to water and sediment conditions
摘要
Abstract
River channel adjustments depend mainly on the incoming sediment and water and the boundary conditions in the Lower Yellow River.However,water and sediment conditions and river boundary are intervened by human being activities.Fluvial process is very complicated in the Lower Yellow River and the river channel adjustment with erosion and deposition in longitudinal and transverse is characterized in the obviously imbalance,which result in forming the bottle-neck reach of flood discharge and endangering the flood defense.In responding to the phenomena of imbalance adjustment,the characteristics of the imbalance adjustment and channels restoring in different reaches of the Lower Yellow River during different periods are analyzed from the process of erosion and deposition in channel,variation of channel cross section and change of water level at discharge of 3 000 m3/s.The relationship between the formation,development and disappearance of the bottle-neck reach of flood discharge with the incoming water and sediment is revealed.The comprehensive analysis results show than the main channels upstream of Jiahetan have been restored to the level in 1969,which is at the best level since 1960.The reaches from Jiahetan to gaocun and from Gaocun to Lijin has been restored to the level in 1989 and in 1985 respectively.It can provide technical support to improvement of the imbalance adjustment and regulation of water and sediment in the Lower Yellow River.关键词
不均衡调整/排洪"瓶颈"河段/水沙调控/河槽恢复/黄河下游Key words
imbalance adjustment/bottle-neck reach of flood discharge/regulation of water and sediment/channel restoring/Lower Yellow River分类
建筑与水利引用本文复制引用
申冠卿,王平,张原锋..黄河下游河道泥沙不均衡调整及其对水沙条件的响应[J].泥沙研究,2023,48(6):30-37,8.基金项目
国家自然科学基金黄河水科学研究联合基金项目(U2243218) （U2243218）
