西汉以来黄河河南境段河床形态演变探析

Preliminary Study on Evolution of Riverbed Form of the Lower Yellow River in Henan Province Since the Western Han Dynasty

利用历史资料和地理学的研究方法,探讨西汉以来黄河下游河南境河段在堤防控制下的河床形态和河床堆积形态。复原了故道河流平面形态与滩地纵剖面,初步建立典型的滑澶段及开归段的堆积模式和桃花峪沉积剖面,认识到西汉末、宋金、明清加积时段的存在和加积发展趋势。同时分析了床砂粒径的变化与加积、河道变徙的联系,加积与下游丰水多沙时段的相应关系。

Based on historical data and methods of geography, the accumulation of riverbed morphology and riverbed morphology of the lower Yellow River in Henan province in history under the condition of dike control ever since the Western Han Dynasty were discussed. The states of the river channel, and the vertical section of beach land in the history were restored, and the sedimentation modes of the reaches from Hua county to Chanzhou and from Kaifeng to Guide, and the sedimentation section of Taohua valley were established. The river beach and developing trend of accelerated sedimentation were analyzed at last years of the Western Han Dynasty and the Song and Jin Dynasty, and the Ming and Qing Dynasty, as well as the relations between the change and accelerated sedimentation of the particle sizes of the riverbed sand and sudden change of river channel were analyzed, the relations between the accelerated sedimentation and the high water and sand period were also analyzed.