Abstract

The Weihe River is the largest tributary of the Yellow River, the insufficient water and excessive sediment result in the tremendous deposition in the Lower Weihe River, How to alleviate the sedimentation in the lower Weihe River becomes one of the most important issues in managing the Weihe River. This paper is firstly to give a brief introduction to the mathematic model in the Lower Weihe River which established by the authors and its calibration and verification. Then its applications in study on the change of sedimentation caused by different of runoff and sediment load in the Lower Weihe River are illustrated. The result shows, controlling the interval water use and sediment supply are the most effective way to mitigate the sedimentation of the lower Weihe River.

Keywords: mathematic model in the Lower Weihe River, sediment load, interval water use, water level at outlet, mitigate sedimentation