关键词: 取水口, 泥沙淤积, 悬移质, 数学模型

Abstract: The 2-D sediment mathematical model was adopted to build the sticking body orthogonal mesh．The fluid field of Chuanwei inlet project was calculated in diferent situation of discharge after the Three Georges Project running．After CalCUlating the sediment silting process，siltation volume and the area of deposition of the project reach in circle way in a series of water year，the conclusion Was drawn with the analyses of the calculation result：the velocity in a section near the project is cut down；the water situation near the inlet does not change and the lateral slope still exists；the accumulated suspend sedimentation mostly locates in the recirculation zone and the area of slack water，and the sediment accumulation rate is consistent.The changes of the water condition around the inlet and the influences on the running of inlet by the evolution of river bed are analyzed．

Key words: inlet, sediment aggradation, suspended sed iment, mathematical model