Liu Zun-li1£¬Xu Jian-xin2£¬Zhang Na2£¬Zhu Guang-ya2£¬Ding Zhang-wen2
1. Yellow River water supply bureau of Henan Province, Zhengzhou 450000£¬China;
2. North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450008,China

Abstract: 5 years water-sediment regulation experiments from 2002 to2006 made the lower reaches of the Yellow River course scour, which is vital significant for maintaining the healthy life of Yellow River. Water  level with the same discharge reduced, caused by river bed undercut, have influence on the water diversion along the Yellow River. This article used two-dimensional silt mathematical model in the lower reaches of the Yellow River, calculated and analysized the silt distortion situation after the water-sediment regulation of Henan section, obtained the evolution tendency of the river course after water-sediment regulation as well as the adverse effect on water diversion caused by river bed evolution, and proposed corresponding solutions.

Key words: Yellow River£»lower reach£»water-sediment regulation£»water diversion from the Yellow River£»river bed evolution