【摘要】 本文借助地貌类比方法及时空复杂响应 ,采用深泓指数及河床起伏度 ,分析了三门峡水库运用后 (196 0～ 196 4年 )黄河下游游荡段的深泓演变情况。预测了小浪底水库修建后 ,清水下泄运用阶段时 ,下游游荡性河段将 :(1)沿程深泓基本保持居中偏右趋势 ,(2 )深泓位移具有时空复杂响应过程 ,(3)游荡程度降低 ,局部河段暂时向微弯发展。因此 ,必须采取“控导主溜 ,稳定险工” ,才能维护良性微弯河势 ,遏制回返向恶性游荡发展。更多还原

【Abstract】 In this paper, it is dealt with geomorphic analogue and time spatial complex response, using thalweg index ( M sh ) and thalweg fluctuation ( J bδ ) to describe thalweg evolution (1960～1964) of the wandering reach in the Lower Yellow R. after Sanmenxia Reservoir operation. The tendency of thalweg evolution of wandering reach after Xiaolangdi Reservoir construction during its clear water running stage will be predicted as following: 1) the thalweg maintains basically its position in the middle to right side, 2) thalweg movement has temporal complex response processes, and 3) wandering reduces and some reaches develop to a slight meandering temporally. Therefore, it must be “controlling a fine slight meandering and to prevent wandering from spoiled development.更多还原