黄河下游河势演变中的畸形河湾

Deformed River Bend of Regime Evolution in the Lower Yellow River

河势演变中常会出现畸形河湾、横河等畸形河势。畸形河势会危及防洪安全甚至造成决口。通过搜集、分析、整理黄河下游已有的河势演变资料,以文字、河势图相结合的形式,较全面地描述了黄河下游游荡型河段及过渡型河段在进行河道整治之前及河道整治过程中曾经出现过的畸形河湾,以实例说明畸形河湾对防洪安全及以下河段河势演变的不利影响,为确定河道整治工程布置方案提供参考资料。

River regime evolutions may appear deformed river bend and horizontal river regime,etc. Deformed river regime can endanger the safety of flood control,even cause burst disaster. Through collecting,analyzing and sorting the existing data of river regime evolution in the Lower Yellow River,combining with words and river regime maps,this paper comprehensively gave the deformed river bends before and in the river regulation process in the meandering and transitional reaches of the Lower Yellow River,and illustrated the adverse effects of deformed river bend on the safety of flood control and river regime evolution,which provided references for determining the layout plan of river regulation project.