长江中游蕲春水道航道整治工程效果分析

Effect analysis of Qichun waterway regulation project in middle reaches of the Yangtze River

蕲春水道航道整治工程是长江干线武汉—安庆6m水深航道项目的先期工程。近年来,蕲春水道的河床演变特点导致弯道进口处容易出浅,且随着李家洲边滩头部串沟和右槽迅速发展,航道条件有恶化的趋势。为遏制该水道的不利发展,2017年开始实施航道整治工程。完工后,根据工程前后的实测资料,多角度分析了河道和航道条件的变化情况。结果表明:整治工程实施后,守护了李家洲边滩,改善浅区水流动力,稳定了关键部位的高滩岸线,初步遏制了航道条件的不利变化趋势,达到建设目标,工程效果较好。

Qichun waterway regulation project is a preliminary task of the 6 m deep channel project in the Wuhan-Anqing section of the mainline of the Yangtze River.In recent years,the evolution characteristics of riverbeds in the Qichun waterway generally lead to shallow areas at the entrance of bends.Meanwhile,as erosion ditches and right channels in the head of the Lijiazhou side shoal develop rapidly,channel conditions tend to be worse.In order to curb the adverse waterway development,the waterway regulation project started in 2017.After the completion of the project,this paper comprehensively analyzed the changes in waterway and channel conditions based on the measured data before and after the project.The result reveals that after the implementation of the regulation project,the Lijiazhou side shoal gets protected,and the hydrodynamic force in shallow areas improves.The high shoreline in the key position is stable,and the adverse change trend of channel conditions has been basically restrained.As a result,the construction goal is achieved,with positive project effects.