关键词: 长江防洪实体模型,  , 三峡工程 , 石首河段 , 河势控制

Abstract: Physical modeling tests were performed to study the fluvial process in Shishou reach of Yangtze River in the purpose of predicting the river regime tendency and proposing river regime control plans for the changes at different stages of Three Gorges Project(TGP). The results reveal that until the end of 2022, apart from some local changes, the overall river regime of Shishou reach will generally remain the same as that at the present, which presents a braided pattern with the left branch of Xinsheng shoal, a newly developed shoal, as the dominant and with the left channel in the left branch as the main channel. The preliminary plan of river regulation projects include bank protection works, either reinforcements or new constructions to be carried out at vulnerable spots along the river bank which are close to the thalweg or heading to the main flow. Additionally, to maintain the present regime or prevent it from deteriorating, bank protection projects will be constructed at some local sandbars or beaches based on the tendency of river regime adjustment.

Key words: Changjiang River Flood Protection Model , Three Gorges Project   , Shishou reach of Yangtze River , river regime control