Abstract: Tonggu Beach is located in the transition section of two reverse rivers. The upstream of the beach can’t satisfy the requirements of water level in dry season; the middle section is the navigation channel with small bending radius; and the down section is of high flowing speed and disordered flow pattern，which is dangerous to navigate. The regulation treatments of dangerous shoal and building structures are discussed through the analysis of the evolution rule and hindering mechanism of the beach based on experimental results of relative models. Furthermore，the effect of regulation treatment is evaluated. The method proposed provides certain references for the regulation treatment of similar beaches of rivers at the mountainous area.

Key words: waterway treatment, Yangtze River, Tonggu Beach

摘要： 铜鼓滩处于两反向河湾的过渡段，枯水期上口水深浅，不满足尺度要求，中段航槽落湾，弯曲半径小，下口流 速大，流态乱，上下水船舶航行危险。在有关模型试验成果的基础上，通过研究分析滩段的演变规律及碍航机理， 对弯道浅险滩的整治方案和整治建筑物结构等治理措施进行了探讨，对治理效果进行了评价，这对山区河流类似 滩段的治理提供了一定借鉴。

关键词: 航道整治, 长江, 铜鼓滩