小浪底水库建成后黄河下游防洪形势变化研究

Great Changes on Flood Control of the Lower Yellow River after Operation of Xiaolangdi Reservoir

黄河小浪底水库投入运用以来下游河床产生强烈冲刷、河槽的过洪能力逐渐增大。中上游近几十年大规模的治理使得黄河来沙量逐年大幅度减少,进入下游大洪水已近消失,近年来没有发生高于警戒水位的流量,下游河道防洪形势发生变化。

After the operation of Xiaolangdi Reservoir, the channel bed of the lower Yellow River has been strongly scoured, and the discharge capacity of the channel increased gradually. In order to prevent excessive river management, we should maintain the healthy life of the Yellow River, and adjust the scale of harnessing projects on the upper and middle reaches.