Effect of Warping at the Xiaobeiganliu Reach in Middle Yellow River on Deposition in the Lower Yellow River

摘要

Warping (coarse sediment diversion) at Xiaobeiganliu reach in the Middle Yellow River is another new strategic attempt in handling sediment in the Yellow River after the water and sediment regulation through the Xioalangdi Reservoir and other reservoirs. The experimental investigation of the warping indicates that proper operation of the diversion sluice and exit sluice can realize the objective of trapping the coarse sediment and discharging the fine sediment back to the river. The paper shows our research results, one of which, among the others, is that about much coarse sediment can be reduced if six warping works of the kind are completed at the Xiaobeiganliu reach, and warping at the Xiaobeiganliu reach will have an apparent role in mitigating the deposition in the Lower Yellow River.